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Comerica

cma · NYSE Financial Services
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Ticker cma
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Industry Banks - Regional
Employees 5001-10,000
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FY2018 Annual Report · Comerica
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20

Comerica
Incorporated
Annual Report

18

COMERICA INCORPORATED
Founded  in  1849,  Comerica  Incorporated  (NYSE:  CMA)  is  a  financial  services  company 
headquartered  in  Dallas,  Texas,  strategically  aligned  by  three  business  segments: 
The  Business  Bank,  The  Retail  Bank  and  Wealth  Management.  Comerica  focuses  on 
relationships,  and  helping  people  and  businesses  be  successful.  In  addition  to  Texas, 
Comerica  Bank  locations  can  be  found  in  Arizona,  California,  Florida  and  Michigan,  with 
select  businesses  operating  in  several  other  states,  as  well  as  in  Canada  and  Mexico. 
As of December 31, 2018, Comerica had:

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$70.8 billion in assets

$50.2 billion in loans

$55.6 billion in deposits

436 banking centers

7,865 employees (FTE)

OUR MISSION

We will achieve balanced growth and profitability by delivering a higher level of banking 
that nurtures lifelong relationships with unwavering integrity and financial prudence.

OUR VISION

To become the highest performing, most respected and most desired bank
in the markets we serve.

OUR CORE VALUES

Customer-centricity
Collaboration
Integrity
Excellence
Agility
Diversity
Involvement

OUR PROMISE

We will raise your expectationsSM of what a bank can be.

TO OUR SHAREHOLDERS

To  my  fellow  shareholders,  2018  was  a  year  of  definitive 
progress for Comerica. Once again, I’m pleased to report good news 
related to our strong financial performance and solid capital position. 
We gained ground on the momentum coming into the year, and we 
remained driven to deliver on the promise of raising expectations of 
what a bank can be. We found strength in our history of consistently 
connecting  with  customers,  as  well  as  rising  to  a  higher  level  of 
banking.  We  continued  investing  in  our  communities,  enhancing 
our  technology  to  develop  products  that  drive  efficiency  through 
automation, 
improving  cybersecurity,  and  carefully  controlling 
expenses. 

Ralph W. Babb Jr.
Chairman and Chief Executive Officer

Before reviewing the 2018 financial results, I would like to highlight a few key factors that 

contributed to our success. 

GEAR UP SUCCESS

As a result of our discipline, we met one of Comerica’s most important goals—the execution 
of our enterprise-wide initiative to help grow efficiency and revenue. We launched GEAR Up in  
July  2016  with  an  aggressive  vision  to  transform  our  organization  through  over  20  separately 
identified work streams. We took a multifaceted approach to cutting costs, and, just as importantly, 
to enhance revenues. We reduced our workforce by nine percent while freeing up more time for 
our relationship managers, optimized real estate, streamlined operational processes, enhanced 
sales programs, and strategically outsourced select technology functions, while reducing system 
applications. 

                The  benefits  derived  from  GEAR  Up  will  continue  into  2019  and  thereafter.  We  have 
achieved, and in many respects surpassed, the expectations that we laid out for GEAR Up when 
it was launched. This success is clearly evidenced in our efficiency and return metrics.

We drove substantial contributions to our bottom line and achieved double-digit returns on 
equity. Pre-tax income in 2018 included approximately $270 million of cumulative benefits. And, 
by the end of 2019, we expect to have met our goal to drive at least $305 million in additional 
pre-tax income. 

Throughout  the  GEAR  Up  process,  our  executive  team  remained  confident  that  we 
would meet the financial targets. We wish to acknowledge and thank our devoted colleagues for 
embracing change through their patience, flexibility, support, and resiliency during this time of 
transition. 

REGULATORY RELIEF

While the financial services sector has seen an increase in regulatory oversight since the 

great recession, banks our size experienced some relief in 2018. 

In  June,  the  Economic  Growth,  Regulatory  Relief  and  Consumer  Protection  Act  was 
signed into law, a positive development for Comerica. In bipartisan support, Congress passed 

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the legislation allowing banks under $100 billion in assets immediate exemption from enhanced 
prudential standards. 

Subsequently, the Federal Reserve announced Comerica is no longer subject to supervisory 
stress testing, including both the Dodd-Frank Act Stress Tests and the Comprehensive Capital 
Analysis and Review. Of course, we will continue to complete robust internal stress testing to 
help ensure we have sufficient capital and liquidity to withstand a variety of economic scenarios.

 As a direct result of this reform, our board of directors is now able to more efficiently and 
effectively take capital actions with a focus on reducing our robust capital ratios to a level that 
is reflective of our business strategy and risk profile. Our goal is to move forward at a measured 
pace to reach a Common Equity Tier 1 (CET1) ratio of 9.5 to 10 percent by the end of 2019. 
We  continue  to  give  careful  consideration  to  earnings  generation,  capital  needs  and  market 
conditions as we determine the pace of share buybacks.

INTEREST RATE HIKES

Coming into 2018, Comerica’s balance sheet continued to be well positioned for a rising 
rate environment. Our balance sheet is sensitive to movement in interest rates, since a majority of 
our revenue is derived from the interest we receive on floating rate loans. Therefore, as rates rise, 
our portfolio reprices quickly. We skillfully navigated the rising rate environment by continuing 
to  carefully  manage  loan  and  deposit  pricing.  This  resulted  in  a  meaningful  increase  in  our 
revenue.

In 2019, we expect to realize the full-year benefit of the rate increases that occurred in 
2018. We remain well positioned for any future rate increases and have the ability to moderate 
some of our asset sensitivity by adding hedges over time, which should help maintain our revenue 
when rates eventually decline.

OUR 2018 FINANCIAL RESULTS 

Growth in net interest income of 14 percent helped drive revenue to an all-time high. As 
just mentioned, this was primarily a result of our ability to manage loan and deposit pricing as 
rates rose throughout 2018. Aided by our GEAR Up initiatives, we were also able to increase 
customer-driven fee income, such as card, fiduciary and brokerage fees. This revenue growth, 
combined with tight expense control, which also benefitted from the execution of our GEAR Up 
initiatives, resulted in an efficiency ratio of under 54 percent for the year and 52 percent in the 
fourth quarter. 

Credit quality remained strong. The provision for credit losses decreased $75 million, from 
a provision amount of $74 million, to a $1 million benefit in 2018.  This reflected a 31 percent 
decline  in  criticized  loans,  which  accounted  for  only  3  percent  of  total  period-end  loans.  Net 
credit-related charge-offs were 11 basis points of average loans.  We continued to maintain a 
healthy allowance for loan losses of 1.34 percent, and we remain vigilant, looking for any areas 
of stress in our loan portfolio. 

Robust revenue, prudent expense control and strong credit quality resulted in a 24 percent 
increase in pretax income over 2017. In addition, earnings per share benefited from a lower tax 
rate and our active capital management. The decrease in the provision for income taxes resulted 

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from the impact of a lower statutory tax rate due to tax reform and $120 million decrease due to  
discrete tax items, partially offset by an increase in pre-tax income. 

  As far as capital management, as previously mentioned, we are focused on reducing 
our  capital  and  have  set  a  target  of  a  CET1  ratio  of  9.5  to  10  percent  by  the  end  of  2019.   
During 2018, we repurchased 14.8 million shares of common stock under our equity repurchase 
program. Additionally, we increased our total 2018 dividend 69 percent over 2017 to $1.84 per share 
and, subsequent to year-end, increased the quarterly dividend further by 7 cents to $0.67, payable  
April  1,  2019.  Altogether,  we  returned  $1.6  billion  to  shareholders  in  2018,  an  increase  of  
$903 million compared to 2017.

In  summary,  we  achieved  a  74  percent  increase  in  earnings  per  share  to  $7.20.  This 
resulted in substantially higher returns, with a return on equity of nearly 16 percent and a return 
on assets of 1.75 percent.  

OUR TECH VISION

Throughout  the  year,  we  made  great  strides  in  advancing  our  technology  strategy—
TechVision2020—which emphasizes strengthening our core  capabilities,  while  also preparing 
Comerica for the evolving needs of our marketplace.

We modernized our technology infrastructure through a variety of means, including the 
adoption of cloud computing to become more scalable, resilient and agile in the development 
and  deployment  of  new  solutions  for  both  colleagues  and  customers.  We  also  enhanced  our
information security program, deployed automation technologies to reduce manual processing 
and improve turnaround times for our customers, and expanded our data analytics capabilities
to improve sales prospecting, new customer onboarding, and customer retention across multiple
business units.

Going forward, the technology team remains committed to providing the right mix of digital 
capabilities to complement our traditional relationship-oriented banking model and enable us to 
effectively compete with anyone in our industry.

OUR BUSINESS SEGMENTS

We engage our customers and execute strategic goals across Comerica’s three lines of 
business  with  a  strong  presence  in  Texas,  California  and  Michigan,  as  well  as  operations  in 
Arizona  and  Florida.  Over  the  years,  we’ve  maintained  balance  between  our  markets,  which 
should continue to help us achieve consistent and sustainable growth over time.  

The  Business  Bank  continues  to  capitalize  on  efficient  and  effective  growth  strategies. 
Since we launched the complete redesign of our lending process, we are seeing great progress 
in the acceleration of loan approvals and increased capacity for our relationship managers. The 
efficiencies of the redesign are allowing our team to spend more time in their markets, working 
with  existing  customers,  while  prospecting  for  new  customers.  The  success  of  this  initiative 
is apparent as our loan production in the Business Bank exceeded 2017, with some lines of 
business having record years.

Technology  enhancements  continue  to  be  a  consistent  theme  for  our  organization.  

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We  are  constantly  improving  our  treasury  management  products  and  services,  which  assist 
our customers in being more successful.  In addition, we are upgrading customer relationship 
management tools that provides our relationship managers easier access to all relevant customer 
interactions and information.  

The  Retail  Bank  continued  to  improve  its  offerings  to  customers  with  a  keen  focus  on 
technology. Our customers asked for modern-day conveniences to make their banking experience 
more efficient. We listened. In 2018, we executed the successful rollout of Zelle® to help our 
customers  send  money  person-to-person  in  a  safe,  fast  and  easy  way.  Our  retail  group  will 
continue to deliver on opportunities to enhance the customer experience, while reducing risk. 

Our banking center colleagues have spent a considerable amount of time planning the 
rollouts of a series of technology initiatives. We are upgrading the data capacity at the banking 
centers,  followed  by  deployment  of  banking  center  Wi-Fi.  These  investments  will  allow  for 
the  distribution  of  tablets  to  our  banking  center  colleagues—making  them  mobile,  improving 
their experience and their ability to serve customers. Other investments include upgrading or 
replacing  our  ATMs  and  advance  function  Interactive  Teller  Machines.  Retail  has  embarked 
on  a  multiyear  digital  transformation  to  deliver  frictionless  deposit  account  opening  across  all 
channels – banking centers, online and mobile.  

In  addition  to  technology,  we  remained  on  task  for  the  optimization  of  our  banking 
centers through relocations, refurbishments and business model transitions. We’re also nearing 
the completion of the transformation of our Customer Contact Center. We’ve reorganized and 
advanced our customer facing technological capabilities. 

We look forward to seeing the customer-centric concepts unfold, which will greatly support 

us in the future. 

Wealth Management enables us to bring private banking, investment management and 
fiduciary services to our Business Bank and Retail Bank clients. Wealth’s target customers include 
high  net  worth  individuals,  such  as  business  owners,  corporate  executives,  first  generation 
wealth, foundations and institutions.

In  2018,  we  reimagined  the  Comerica  Wealth  Management  experience  with  the  goal 
of  delivering  enhanced  client  engagement,  increasing  client  retention  and  accelerating  client 
acquisition. Our premier brand, 1849 by Comerica Wealth Management, will launch in 2019. 
This  new  initiative  will  deliver  the  highest  level  of  comprehensive  solutions,  personalized 
service,  value-added  perspectives,  integrated  advice  and  guidance,  while  providing  exclusive 
relationship  benefits  to  our  top  tier  of  individual  clients  and  families.  In  addition,  Wealth 
Management strengthened its investment platform by honing our overall investment philosophy. 
We’ve  made  enhancements  to  our  investment  management  capabilities,  including  tailored,  
goal-based investment portfolios designed to balance risk and return, while providing greater tax 
management capabilities, options for socially-responsible investing, and improved rebalancing 
capabilities to ensure clients’ portfolios stay in line with their stated objectives.

Comerica Securities added a new element to its investor platform that unlocks value for 
clients and advisors through its comprehensive planning and investing. This development gives 
advisors  more  time  to  implement  plans.  In  keeping  up  with  technology,  Comerica  Securities 
recently launched its mobile application, making it more convenient for clients to access and 
trade their brokerage accounts. 

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OUR CULTURE OF DIVERSITY AND INCLUSION

We  stand  on  the  principles  of  our  core  values.  They  shape  our  culture  and  reflect  on 
the ideals for which Comerica was founded nearly 170 years ago. Diversity is among the seven 
values we uphold. Our unending commitment to the communities we serve is one of the driving 
forces  behind  our  company’s  success.  Our  diversity  drives  professional  growth,  fosters  more 
creative ideas in the workplace and encourages innovation.  

In  2018,  we  are  proud  to  report  that  two  of  our  executives  were  honored  by  diversity 
organizations for being top leaders. Our Chief Financial Officer Muneera Carr was named to the 
Dallas Power 50 by the Texas Diversity Council; and Black Enterprise Magazine named Nathaniel 
Bennett, Comerica’s Chief Diversity Officer, to its coveted 2018 Top Executives in Diversity list. 

Additionally, we were recognized by various organizations and the media for being leaders 
in  diversity  nationwide.  Comerica  was  among  the  top  organizations  honored  by  the  Michigan 
Veterans Affairs Agency for being a Veteran-Friendly Employer. LATINA Style 50 Award named 
Comerica one of the top 50 organizations for providing Latinas career advancement for the ninth 
consecutive year. And for the fourth year in a row, we earned a perfect rating on the Human 
Rights Campaign Corporate Equality index, which earned us a designation for being a Best Place 
to Work for LGBTQ equality.  

OUR DEDICATION TO THE COMMUNITY AND ENVIRONMENT

The health of the communities we serve is also vital to our growth. We enthusiastically 
engage with nonprofit organizations in our neighborhoods, so they may thrive and prosper. In 
2018, we created value for our communities by distributing more than $7.8 million in charitable 
contributions.  The  monies  allocated  stretched  into  many  areas,  including  those  that  needed 
emergency assistance. California is one of our key markets. The devastation of the 2018 wildfires 
spread throughout the Comerica family. Sadly, we had colleagues who lost homes and valuable 
possessions. We surrounded them with support as those affected began working through the 
recovery  process.  We  also  partnered  with  the  American  Red  Cross  to  provide  some  financial 
relief for California wildfire victims statewide. 

The spirit of volunteerism is another way we invest in our communities. Our colleagues 
logged  nearly  50,400  volunteer  hours  during  the  year.  In  addition,  we  connected  with  our 
markets through annual events, financial education programs, and a host of other activities to 
support  our  corporate  responsibility  projects.  Annually,  we  produce  a  comprehensive  review 
of  our  environmental,  social  and  governance  programs  which  can  be  found  on  our  website, 
comerica.com. 

We are an organization that embraces corporate, social and environmental responsibility. 
This commitment was underscored by the recognitions Comerica received in 2018. We were 
listed on Barron’s 100 Most Sustainable Companies in the United States and as one of America’s 
100 Most Just Companies by JUST Capital and Forbes. We also received a national award for 
engaging suppliers on sustainability. And, we were pleased to celebrate our tenth consecutive 
year  of  listing  on  the  FTSE4Good  Index  Series.  Comerica  also  supports  a  greening  economy 
through  more  than  $772  million  in  environmentally  beneficial  loans  and  commitments  in  
2018 to companies and projects in 13 different green loan categories. 

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OUR FOCUS FORWARD

As we forge ahead, we have a steadfast goal of driving profitable growth for Comerica. 
We  can  approach  2019  and  the  years  ahead  with  an  indelible  commitment  to  delivering 
more  personalized  financial  services  to  our  customers  while  providing  increased  value  to  our 
shareholders. 

The  new  initiatives  I  previously  outlined  are  underway  to  enable  higher  performance. 
There’s great opportunity across many fronts. We are confident in our ability to sustain our steady 
progress.

We are a stronger organization today because of the earnest spirit of our colleagues who 
demonstrate their dedication daily. And, we are extremely proud of the efforts our teams have 
put forth to make 2018 one of the best years in Comerica’s 170-year history. 

Thank you for your continuing support and confidence. 

Sincerely,

Ralph W. Babb Jr.
Chairman and Chief Executive Officer

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BOARD OF DIRECTORS

Ralph W. Babb Jr. 
Chairman and Chief Executive Officer
Comerica Incorporated and Comerica Bank

Michael E. Collins (1) (3) (4)
Chair and Senior Counselor, Blake Collins Group
Former Consultant, Federal Reserve Bank of Cleveland
Former Executive Vice President, Federal Reserve Bank of 
Philadelphia

Roger A. Cregg (1) (2) (3)
Former President and Chief Executive Officer
AV Homes, Inc.

T. Kevin DeNicola (1) (3) (4)
Former Chief Financial Officer
KiOR, Inc.

Curtis C. Farmer
President 
Comerica Incorporated and Comerica Bank

Jacqueline P. Kane (2)
Retired Executive Vice President of
Human Resources and Corporate Affairs
The Clorox Company

Richard G. Lindner (2) (4)
Retired Senior Executive Vice President and
Chief Financial Officer                                                
AT&T, Inc.

Barbara R. Smith (2)
Chairman, President and Chief Executive Officer
Commercial Metals Company

Robert S. Taubman (4)
Chairman, President and Chief Executive Officer
Taubman Centers, Inc. and The Taubman Company

Reginald M. Turner, Jr. (1) (3) (4)
Member
Clark Hill

Nina G. Vaca (1) (3) (4)
Chairman and Chief Executive Officer
Pinnacle Technical Resources, Inc. and Vaca Industries Inc.

Michael G. Van de Ven (2)
Chief Operating Officer
Southwest Airlines Co.

(1) Audit Committee
(2) Governance, Compensation and Nominating Committee
(3) Qualified Legal Compliance Committee
(4) Enterprise Risk Committee

SENIOR LEADERSHIP TEAM

Ralph W. Babb Jr. 
Chairman and Chief Executive Officer
Comerica Incorporated and Comerica Bank

Curtis C. Farmer 
President, Comerica Incorporated and Comerica Bank

Muneera S. Carr
Executive Vice President and Chief Financial Officer

Peter W. Guilfoile
Executive Vice President and Chief Credit Officer

Christine M. Moore
Executive Vice President and General Auditor

Jay K. Oberg
Executive Vice President and Chief Risk Officer

Paul R. Obermeyer
Executive Vice President, Enterprise Technology and Operations

John D. Buchanan
Executive Vice President, Chief Legal Officer/General Counsel

Megan D. Burkhart
Executive Vice President and Chief Human Resources Officer

8

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K
Annual Report Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
For the fiscal year ended
December 31, 2018 
Commission file number 1-10706
COMERICA INCORPORATED
(Exact Name of Registrant as Specified in Its Charter)

Delaware
(State or Other Jurisdiction of Incorporation)

38-1998421
(IRS Employer Identification Number)

Comerica Bank Tower
1717 Main Street, MC 6404
Dallas, Texas 75201
(Address of Principal Executive Offices) (Zip Code)

(214) 462-6831
(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of
the Exchange Act:

Common Stock, $5 par value

These securities are registered on the New York Stock Exchange.

Securities registered pursuant to Section 12(g) of the
Exchange Act:
None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes 

 No 

Indicate by check mark if registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes 

 No 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities 
Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has 
been subject to such filing requirements for the past 90 days. Yes 

 No 

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant 
to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was 
required to submit such files). Yes 

 No 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405) is not contained herein, 
and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III 
of this Form 10-K or any amendment to this Form 10-K. 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting 
company, or emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and 
“emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer 

Non-accelerated filer 

Accelerated filer 

Smaller reporting company 

Emerging growth company 

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for 

complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes 

No 

At June 29, 2018 (the last business day of the registrant’s most recently completed second fiscal quarter), the registrant’s common 
stock, $5 par value, held by non-affiliates had an aggregate market value of approximately $15.3 billion based on the closing price on the New 
York Stock Exchange on that date of $90.92 per share. For purposes of this Form 10-K only, it has been assumed that all common shares 
Comerica’s Trust Department holds for Comerica’s employee plans, and all common shares the registrant’s directors and executive officers hold, 
are shares held by affiliates.

At February 8, 2019, the registrant had outstanding 159,000,514 shares of its common stock, $5 par value.

Documents Incorporated by Reference:

Part III: Items 10-14—Proxy Statement for the Annual Meeting of Shareholders to be held April 23, 2019.

 
TABLE OF CONTENTS

PART I

Item 1. Business.

Item 1A. Risk Factors.

Item 1B. Unresolved Staff Comments.

Item 2. Properties.

Item 3. Legal Proceedings.

Item 4. Mine Safety Disclosures.

PART II

Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 

Securities.

Item 6. Selected Financial Data.

Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

Item 8. Financial Statements and Supplementary Data.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

Item 9A. Controls and Procedures.

Item 9B. Other Information.

PART III

Item 10. Directors, Executive Officers and Corporate Governance.

Item 11. Executive Compensation.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder 

Matters.

Item 13. Certain Relationships and Related Transactions, and Director Independence.

Item 14. Principal Accountant Fees and Services.

PART IV

Item 15. Exhibits and Financial Statement Schedules

Item 16. Form 10-K Summary

FINANCIAL REVIEW AND REPORTS
SIGNATURES

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F-1
S-1

PART I

Item 1. Business.

GENERAL

Comerica Incorporated (“Comerica”) is a financial services company, incorporated under the laws of the State of Delaware, 
and headquartered in Dallas, Texas. Based on total assets as reported in the most recently filed Consolidated Financial Statements 
for  Bank  Holding  Companies  (FR Y-9C),  it  was  among  the  25  largest  commercial  United  States  (“U.S.”)  financial  holding 
companies. Comerica was formed in 1973 to acquire the outstanding common stock of Comerica Bank, which at such time was 
a Michigan banking corporation and one of Michigan's oldest banks (formerly Comerica Bank-Detroit). On October 31, 2007, 
Comerica  Bank,  a  Michigan  banking  corporation,  was  merged  with  and  into  Comerica  Bank,  a  Texas  banking  association 
(“Comerica Bank”). As of December 31, 2018, Comerica owned directly or indirectly all the outstanding common stock of 2 active 
banking and 29 non-banking subsidiaries. At December 31, 2018, Comerica had total assets of approximately $70.8 billion, total 
deposits of approximately $55.6 billion, total loans (net of unearned income) of approximately $50.2 billion and shareholders’ 
equity of approximately $7.5 billion.

Comerica has strategically aligned its operations into three major business segments: the Business Bank, the Retail Bank, 

and Wealth Management. In addition to the three major business segments, Finance is also reported as a segment.

Comerica operates in three primary geographic markets - Texas, California, and Michigan, as well as in Arizona and 

Florida, with select businesses operating in several other states, and in Canada and Mexico. 

We provide information about the net interest income and noninterest income we received from our various classes of 
products and services: (1) under the caption, “Analysis of Net Interest Income” on page F-6 of the Financial Section of this report; 
(2) under  the  caption  “Net  Interest  Income”  on  page F-7  of  the  Financial  Section  of  this  report;  and  (3) under  the  caption 
“Noninterest Income” on pages F-8 through F-9 of the Financial Section of this report.

COMPETITION

The financial services business is highly competitive. Comerica and its subsidiaries mainly compete in their three primary 
geographic markets of Texas, California and Michigan, as well as in the states of Arizona and Florida. They also compete in 
broader, national geographic markets, as well as markets in Mexico and Canada. They are subject to competition with respect to 
various products and services, including, without limitation, loans and lines of credit, deposits, cash management, capital market 
products, international trade finance, letters of credit, foreign exchange management services, loan syndication services, consumer 
lending, consumer deposit gathering, mortgage loan origination, consumer products, fiduciary services, private banking, retirement 
services, investment management and advisory services, investment banking services, brokerage services, the sale of annuity 
products, and the sale of life, disability and long-term care insurance products. 

Comerica competes in terms of products and pricing with large national and regional financial institutions and with 
smaller financial institutions. Some of Comerica's larger competitors, including certain nationwide banks that have a significant 
presence in Comerica's market area, may make available to their customers a broader array of product, pricing and structure 
alternatives and, due to their asset size, may more easily absorb credit losses in a larger overall portfolio. Some of Comerica's 
competitors (larger or smaller) may have more liberal lending policies and processes. Increasingly, Comerica competes with other 
companies  based  on  financial  technology  and  capabilities,  such  as  mobile  banking  applications  and  funds  transfer.  Further, 
Comerica's banking competitors may be subject to a significantly different or reduced degree of regulation due to their asset size 
or types of products offered. They may also have the ability to more efficiently utilize resources to comply with regulations or 
may be able to more effectively absorb the costs of regulations into their existing cost structure. Comerica believes that the level 
of competition in all geographic markets will continue to increase in the future. 

In addition to banks, Comerica's banking subsidiaries also face competition from other financial intermediaries, including 
savings and loan associations, consumer finance companies, leasing companies, venture capital funds, credit unions, investment 
banks, insurance companies and securities firms. Competition among providers of financial products and services continues to 
increase as technology advances have lowered the barriers to entry for financial technology companies, with customers having 
the opportunity to select from a growing variety of traditional and nontraditional alternatives, including crowdfunding, digital 
wallets and money transfer services. The ability of non-banking financial institutions to provide services previously limited to 
commercial banks has intensified competition. Because non-banking financial institutions are not subject to many of the same 
regulatory restrictions as banks and bank holding companies, they can often operate with greater flexibility and lower cost structures. 

In addition, the industry continues to consolidate, which affects competition by eliminating some regional and local 

institutions, while strengthening the franchises of acquirers.

1

SUPERVISION AND REGULATION

Banks, bank holding companies, and financial institutions are highly regulated at both the state and federal level. Comerica 
is subject to supervision and regulation at the federal level by the Board of Governors of the Federal Reserve System (“FRB”) 
under the Bank Holding Company Act of 1956, as amended. Comerica Bank is chartered by the State of Texas and at the state 
level is supervised and regulated by the Texas Department of Banking under the Texas Finance Code. Comerica Bank has elected 
to be a member of the Federal Reserve System under the Federal Reserve Act and, consequently, is supervised and regulated by 
the Federal Reserve Bank of Dallas. Comerica Bank & Trust, National Association is chartered under federal law and is subject 
to supervision and regulation by the Office of the Comptroller of the Currency (“OCC”) under the National Bank Act. Comerica 
Bank & Trust, National Association, by virtue of being a national bank, is also a member of the Federal Reserve System. The 
deposits of Comerica Bank and Comerica Bank & Trust, National Association are insured by the Deposit Insurance Fund (“DIF”) 
of the Federal Deposit Insurance Corporation (“FDIC”) to the extent provided by law, and therefore Comerica Bank and Comerica 
Bank & Trust, National Association are each also subject to regulation and examination by the FDIC. Certain transactions executed 
by Comerica Bank are also subject to regulation by the U.S. Commodity Futures Trading Commission (“CFTC”). The Department 
of  Labor  (“DOL”)  regulates  financial  institutions  providing  services  to  plans  governed  by  the  Employee  Retirement  Income 
Security Act of 1974. Comerica Bank’s Canada branch is supervised by the Office of the Superintendent of Financial Institutions 
and its Mexico representative office is supervised by the Banco de México.

The FRB supervises non-banking activities conducted by companies directly and indirectly owned by Comerica. In 
addition, Comerica’s non-banking subsidiaries are subject to supervision and regulation by various state, federal and self-regulatory 
agencies, including, but not limited to, the Financial Industry Regulatory Authority, Inc. (“FINRA”), the Department of Licensing 
and Regulatory Affairs of the State of Michigan and the Municipal Securities Rulemaking Board (“MSRB”) (in the case of Comerica 
Securities, Inc.); the Department of Insurance and Financial Services of the State of Michigan (in the case of Comerica Insurance 
Services, Inc.); the DOL (in the case of Comerica Securities, Inc. and Comerica Insurance Services, Inc.); and the Securities and 
Exchange Commission (“SEC”) (in the case of Comerica Securities, Inc. and World Asset Management, Inc.).

Both the scope of the laws and regulations and intensity of supervision to which Comerica’s business is subject have 
increased over the past decade in response to the financial crisis as well as other factors such as technological and market changes. 
Many of these changes have occurred as a result of the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-
Frank Act”) and its implementing regulations, most of which are now in place. In 2018, with the passage of the Economic Growth, 
Regulatory Relief and Consumer Protection Act (“EGRRCPA”), as described below, there has been some recalibration of the post-
financial crisis framework; however, Comerica’s business remains subject to extensive regulation and supervision. 

Comerica is also subject to the disclosure and regulatory requirements of the Securities Act of 1933, as amended, and 
the Securities Exchange Act of 1934, as amended, both as administered by the SEC, as well as the rules of the New York Stock 
Exchange.

Described below are material elements of selected laws and regulations applicable to Comerica and its subsidiaries. The 
descriptions are not intended to be complete and are qualified in their entirety by reference to the full text of the statutes and 
regulations described. Changes in applicable law or regulation, and in their application by regulatory agencies, cannot be predicted, 
but they may have a material effect on the business of Comerica and its subsidiaries.

Economic Growth, Regulatory Relief and Consumer Protection Act 

On May 24, 2018, EGRRCPA was signed into law. Among other regulatory changes, EGRRCPA amends various sections 
of the Dodd-Frank Act, including section 165 of Dodd-Frank Act, which was revised to raise the asset thresholds for determining 
the application of enhanced prudential standards for bank holding companies. Under EGRRCPA bank holding companies with 
less than $100 billion of consolidated assets, including Comerica, were immediately exempted from all of the enhanced prudential 
standards, except risk committee requirements, which now apply to publicly-traded bank holding companies with $50 billion or 
more of consolidated assets, including Comerica. As a result, Comerica is no longer subject to Dodd-Frank Act supervisory and 
company-run stress testing, required to file a resolution plan under Section 165(d) of the Dodd-Frank Act or subject to internal 
liquidity stress testing and buffer requirements. In addition, Comerica is no longer required to pay the supervision and regulation 
fee assessment under the Dodd-Frank Act. 

On July 6, 2018, the FRB released a statement that for bank holding companies with between $50 billion and $100 billion 
in total consolidated assets, including Comerica, the FRB would take no action to require such bank holding companies to comply 
with the Comprehensive Capital Analysis and Review (“CCAR”) process or the Liquidity Coverage Ratio. On October 31, 2018, 
the FRB proposed rules that would revise its regulations to raise the asset thresholds for these requirements so that bank holding 
companies with less than $100 billion in total consolidated assets would be exempt.

Also on July 6, 2018, the federal banking regulators issued an interagency statement that banks with less than $100 billion 
in  total  consolidated  assets,  including  Comerica  Bank,  would  not  be  required  to  comply  with  company-run  stress  testing 
requirements until November 25, 2019, at which time such banks will become exempt from company-run stress testing requirements 

2

under the EGRRCPA. In addition, the federal banking regulators have each issued proposed rules that would revise their stress 
testing regulations consistent with the EGRRCPA.

Requirements for Approval of Activities and Acquisitions

The Gramm-Leach-Bliley Act expanded the activities in which a bank holding company registered as a financial holding 
company can engage. Comerica became a financial holding company in 2000. As a financial holding company, Comerica may 
affiliate  with  securities  firms  and  insurance  companies,  and  engage  in  activities  that  are  financial  in  nature  or  incidental  or 
complementary to activities that are financial in nature. Activities that are “financial in nature” include, but are not limited to: 
securities underwriting; securities dealing and market making; sponsoring mutual funds and investment companies (subject to 
regulatory requirements described below); insurance underwriting and agency; merchant banking; and activities that the FRB 
determines, in consultation with the Secretary of the United States Treasury, to be financial in nature or incidental to a financial 
activity. “Complementary activities” are activities that the FRB determines upon application to be complementary to a financial 
activity and that do not pose a substantial risk to the safety or soundness of depository institutions or the financial system generally.

In order to maintain its status as a financial holding company, Comerica and each of its depository institution subsidiaries 
must each remain “well capitalized” and “well managed,” and Comerica, Comerica Bank and Comerica Bank & Trust, National 
Association are each “well capitalized” and “well managed” under FRB standards. If Comerica or any subsidiary bank of Comerica 
were to cease being “well capitalized” or “well managed” under applicable regulatory standards, the FRB could place limitations 
on Comerica’s ability to conduct the broader financial activities permissible for financial holding companies or impose limitations 
or conditions on the conduct or activities of Comerica or its affiliates. If the deficiencies persisted, the FRB could order Comerica 
to  divest  any  subsidiary  bank  or  to  cease  engaging  in  any  activities  permissible  for  financial  holding  companies  that  are  not 
permissible for bank holding companies, or Comerica could elect to conform its non-banking activities to those permissible for a 
bank holding company that is not also a financial holding company.

In addition, the Community Reinvestment Act of 1977 (“CRA”) requires U.S. banks to help serve the credit needs of 
their communities. Comerica Bank’s current rating under the CRA is “satisfactory.” If any subsidiary bank of Comerica were to 
receive a rating under the CRA of less than “satisfactory,” Comerica would be prohibited from engaging in certain activities. 

Federal  and  state  laws  impose  notice  and  approval  requirements  for  mergers  and  acquisitions  of  other  depository 
institutions or bank holding companies. In many cases, no FRB approval is required for Comerica to acquire a company engaged 
in activities that are financial in nature or incidental to activities that are financial in nature, as determined by the FRB. Prior 
approval is required before Comerica may acquire the beneficial ownership or control of more than 5% of any class of voting 
shares or substantially all of the assets of a bank holding company (including a financial holding company) or a bank. In considering 
applications for approval of acquisitions, the banking regulators may take several factors into account, including whether Comerica 
and its subsidiaries are well capitalized and well managed, are in compliance with anti-money laundering laws and regulations, 
or have CRA ratings of less than “satisfactory.” 

Acquisitions of Ownership of Comerica

Acquisitions of Comerica’s voting stock above certain thresholds are subject to prior regulatory notice or approval under 
federal banking laws, including the Bank Holding Company Act of 1956 and the Change in Bank Control Act of 1978. Under the 
Change in Bank Control Act, a person or entity generally must provide prior notice to the FRB before acquiring the power to vote 
10% or more of Comerica’s outstanding common stock. Investors should be aware of these requirements when acquiring shares 
of Comerica’s stock.

Capital and Liquidity

Comerica and its bank subsidiaries are subject to risk-based capital requirements and guidelines imposed by the FRB 
and/or the OCC. In calculating risk-based capital requirements, a depository institution’s or holding company’s assets and certain 
specified off-balance sheet commitments are assigned to various risk categories defined by the FRB, each weighted differently 
based on the level of credit risk that is ascribed to such assets or commitments, based on counterparty type and asset class. A 
depository institution’s or holding company’s capital is divided into three tiers: Common Equity Tier 1 (“CET1”), additional Tier 
1, and Tier 2. CET1 capital predominantly includes common shareholders’ equity, less certain deductions for goodwill, intangible 
assets and deferred tax assets that arise from net operating losses and tax credit carry-forwards, if any. Additional Tier 1 capital 
primarily includes any outstanding noncumulative perpetual preferred stock and related surplus. Comerica has also made the 
election to permanently exclude accumulated other comprehensive income related to debt securities, cash flow hedges, and defined 
benefit postretirement plans from CET1 capital. Tier 2 capital primarily includes qualifying subordinated debt and qualifying 
allowance for credit losses. The ultimate treatment for certain specific deductions and adjustments is yet to be determined pending 
the finalization of a proposal by banking regulators to simplify certain aspects of the capital rules. In addition, in December 2018, 
the federal banking regulators adopted rules that would permit bank holding companies and banks to phase in, for regulatory 
capital purposes, the day-one impact of the new current expected credit loss ("CECL") accounting rule on retained earnings over 
a period of three years. More information is set forth in the “Capital” section located on pages F-18 through F-20.

3

Entities that engage in trading activities that exceed specified levels, also are required to maintain capital to account for 
market risk. Market risk includes changes in the market value of trading account, foreign exchange, and commodity positions, 
whether resulting from broad market movements (such as changes in the general level of interest rates, equity prices, foreign 
exchange rates, or commodity prices) or from position specific factors. From time to time, Comerica’s trading activities may 
exceed specified regulatory levels, in which case Comerica adjusts its risk-weighted assets to account for market risk as required.

Comerica and its bank subsidiaries, like other bank holding companies and banks, currently are required to maintain a 
minimum CET1 capital ratio, minimum Tier 1 capital ratio and minimum total capital ratio equal to at least 4.5 percent, 6 percent 
and  8  percent  of  their  total  risk-weighted  assets  (including  certain  off-balance-sheet  items,  such  as  standby  letters  of  credit), 
respectively. In 2018, Comerica and its bank subsidiaries were also required to maintain a minimum capital conservation buffer 
of 1.875 percent in order to avoid restrictions on capital distributions and discretionary bonuses. The minimum required capital 
conservation buffer increased to 2.5 percent as of January 1, 2019. Comerica and its bank subsidiaries are also required to maintain 
a minimum “leverage ratio” (Tier 1 capital to non-risk-adjusted average total assets) of 4 percent.

To be well capitalized, Comerica’s bank subsidiaries are required to maintain a CET1 capital ratio, Tier 1 capital ratio, 
total capital ratio and a leverage ratio equal to at least 6.5 percent, 8.0 percent, 10.0 percent and 5.0 percent, respectively. The FRB 
has not yet revised the minimum requirements for bank holding companies to be considered well capitalized to reflect the higher 
capital requirements imposed under the current capital rules. For purposes of the FRB’s Regulation Y, including determining 
whether a bank holding company meets the requirements to be a financial holding company, bank holding companies, such as 
Comerica, must maintain a Tier 1 capital ratio of at least 6.0 percent and a total capital ratio of at least 10.0 percent to be well 
capitalized. If the FRB were to apply the same or a very similar minimum requirement to be considered well capitalized to bank 
holding companies as that applicable to Comerica’s bank subsidiaries, Comerica’s capital ratios as of December 31, 2018 would 
exceed such revised minimum requirements. The FRB may require bank holding companies, including Comerica, to maintain 
capital ratios substantially in excess of mandated minimum levels, depending upon general economic conditions and a bank holding 
company’s particular condition, risk profile and growth plans.

Failure to be well capitalized or to meet minimum capital requirements could result in certain mandatory and possible 
additional discretionary actions by regulators, including restrictions on Comerica’s or its bank subsidiaries’ ability to pay dividends 
or otherwise distribute capital or to receive regulatory approval of applications, or other restrictions on growth.

At December 31, 2018, Comerica met all of its minimum risk-based capital ratio and leverage ratio requirements plus 
the applicable countercyclical conservation buffer and the applicable well capitalized requirements, as shown in the table below:

(dollar amounts in millions)
December 31, 2018

CET1 capital (minimum $3.0 billion (Consolidated))
Tier 1 capital (minimum $4.0 billion (Consolidated))
Total capital (minimum $5.4 billion (Consolidated))
Risk-weighted assets
Adjusted average assets (fourth quarter)
CET1 capital to risk-weighted assets (minimum 4.5%)
Tier 1 capital to risk-weighted assets (minimum 6.0%)
Total capital to risk-weighted assets (minimum 8.0%)
Tier 1 capital to average assets (minimum 4.0%)
Capital conservation buffer

December 31, 2017

CET1 capital (minimum $3.0 billion (Consolidated))
Tier 1 capital (minimum $4.0 billion (Consolidated))
Total capital (minimum $5.3 billion (Consolidated))
Risk-weighted assets
Adjusted average assets (fourth quarter)
CET1 capital to risk-weighted assets (minimum 4.5%)
Tier 1 capital to risk-weighted assets (minimum 6.0%)
Total capital to risk-weighted assets (minimum 8.0%)
Tier 1 capital to average assets (minimum 4.0%)
Capital conservation buffer

Comerica
Incorporated
(Consolidated)

Comerica
Bank

$

$

$

$

7,470
7,470
8,855
67,047
71,070
11.14%
11.14
13.21
10.51
5.14

7,773
7,773
9,211
66,575
71,372

11.68 %
11.68
13.84
10.89
5.68

7,229
7,229
8,433
66,857
70,905
10.81%
10.81
12.61
10.20
4.61

7,121
7,121
8,378
66,447
71,181

10.72 %
10.72
12.61
10.00
4.61

Comerica was previously required to comply with the modified Liquidity Coverage Ratio and would have been required 
to comply with the proposed Net Stable Funding Ratio. However, as discussed above, the FRB has stated that it will take no action 
to require bank holding companies with less than $100 billion in total consolidated assets, including Comerica, to comply with 

4

the modified Liquidity Coverage Ratio. In addition, the banking regulators proposed a rule on October 31, 2018, that would raise 
the asset threshold for the proposed Net Stable Funding Ratio rule to apply to firms with more than $100 billion in total consolidated 
assets, and therefore, Comerica would not be required to comply with this rule as currently proposed. 

Additional information on the calculation of Comerica’s and its bank subsidiaries’ CET1 capital, Tier 1 capital, total 
capital and risk-weighted assets is set forth in the “Capital” section located on pages F-18 through F-20 of the Financial Section 
of this report and Note 20 of the Notes to Consolidated Financial Statements located on pages F-92 through F-93 of the Financial 
Section of this report.

Annual Capital Plans and Stress Tests

Comerica was previously subject to the FRB’s annual CCAR process, including the requirement to submit an annual 
capital plan to the FRB for non-objection. However, as discussed above, the FRB has stated that it will take no action to require 
bank  holding  companies  with  less  than  $100  billion  in  total  consolidated  assets,  including  Comerica,  to  comply  with  the 
requirements of the CCAR process, and on October 31, 2018, the FRB proposed rules that would revise its regulations to raise 
the asset thresholds for these requirements such that bank holding companies with less than $100 billion in total consolidated 
assets would be exempt.

Comerica and Comerica Bank were also previously subject to Dodd-Frank Act stress testing requirements. As discussed 
above, as a bank holding company with less than $100 billion in total consolidated assets Comerica was immediately exempted 
from Dodd-Frank Act supervisory and company-run stress testing requirements by the EGRRCPA, and Comerica Bank, as a bank 
with less than $100 billion in total consolidated assets, will be exempt from company-run stress testing requirements under the 
EGRRCPA on November 25, 2019, and will not be required to comply with them during the intervening period. The federal 
banking  regulators  have  proposed  rules  that  would  revise  their  respective  regulations  to  raise  the  asset  thresholds  for  these 
requirements such that bank holding companies and banks with less than $100 billion in total consolidated assets would be exempt.

Federal Deposit Insurance Corporation Improvement Act 

The Federal Deposit Insurance Corporation Improvement Act (“FDICIA”) requires, among other things, the federal 
banking agencies to take “prompt corrective action” with respect to depository institutions that do not meet certain minimum 
capital  requirements.  FDICIA  establishes  five  capital  tiers:  “well  capitalized,”  “adequately  capitalized,”  “undercapitalized,” 
“significantly undercapitalized” and “critically undercapitalized.” An institution that fails to remain well capitalized becomes 
subject to a series of restrictions that increase in severity as its capital condition weakens. Such restrictions may include a prohibition 
on capital distributions, restrictions on asset growth or restrictions on the ability to receive regulatory approval of applications. 
The  FDICIA  also  provides  for  enhanced  supervisory  authority  over  undercapitalized  institutions,  including  authority  for  the 
appointment of a conservator or receiver for the institution.

As of December 31, 2018, each of Comerica’s bank subsidiaries’ capital ratios exceeded those required for an institution 

to be considered “well capitalized” under these regulations.

As an additional means to identify problems in the financial management of depository institutions, FDICIA requires 
federal bank regulatory agencies to establish certain non-capital-based safety and soundness standards for institutions any such 
agency supervises. The standards relate generally to, among others, earnings, liquidity, operations and management, asset quality, 
various risk and management exposures (e.g., credit, operational, market, interest rate, etc.) and executive compensation. The 
agencies are authorized to take action against institutions that fail to meet such standards. 

FDICIA also contains a variety of other provisions that may affect the operations of depository institutions including 
reporting requirements, regulatory standards for real estate lending, “truth in savings” provisions, the requirement that a depository 
institution give 90 days prior notice to customers and regulatory authorities before closing any branch, and a prohibition on the 
acceptance or renewal of brokered deposits by depository institutions that are not well capitalized or are adequately capitalized 
and have not received a waiver from the FDIC.

Dividends

Comerica is a legal entity separate and distinct from its banking and other subsidiaries. Since Comerica’s consolidated 
net income and liquidity consists largely of net income of and dividends received from Comerica’s bank subsidiaries, Comerica’s 
ability to pay dividends and repurchase shares depends upon its receipt of dividends from these subsidiaries. There are statutory 
and regulatory requirements applicable to the payment of dividends by subsidiary banks to Comerica, as well as by Comerica to 
its shareholders. Certain, but not all, of these requirements are discussed below. No assurances can be given that Comerica’s bank 
subsidiaries will, in any circumstances, pay dividends to Comerica.

Comerica Bank and Comerica Bank & Trust, National Association are required by federal law to obtain the prior approval 
of the FRB and/or the OCC, as the case may be, for the declaration and payment of dividends, if the total of all dividends declared 
by the board of directors of such bank in any calendar year will exceed the total of (i) such bank's retained net income (as defined 
and interpreted by regulation) for that year plus (ii) the retained net income (as defined and interpreted by regulation) for the 
5

 
preceding two years, less any required transfers to surplus or to fund the retirement of preferred stock. At January 1, 2019, Comerica's 
subsidiary banks could declare aggregate dividends of approximately $108 million from retained net profits of the preceding two 
years. Comerica's subsidiary banks declared dividends of $1.1 billion in 2018, $907 million in 2017 and $545 million in 2016. 

Comerica and its bank subsidiaries must maintain the applicable CET1 capital conservation buffer to avoid becoming 
subject to restrictions on capital distributions, including dividends. The capital conservation buffer is currently at its fully phased-
in level of 2.5%. 

Furthermore, federal regulatory agencies can prohibit a bank or bank holding company from paying dividends under 
circumstances in which such payment could be deemed an unsafe and unsound banking practice. Under the FDICIA “prompt 
corrective  action”  regime  discussed  above,  which  applies  to  each  of  Comerica  Bank  and  Comerica  Bank  & Trust,  National 
Association, a bank is specifically prohibited from paying dividends to its parent company if payment would result in the bank 
becoming “undercapitalized.” In addition, Comerica Bank is also subject to limitations under Texas state law regarding the amount 
of earnings that may be paid out as dividends to Comerica, and requires prior approval for payments of dividends that exceed 
certain levels. 

FRB policy provides that a bank holding company should not pay dividends unless (1) the bank holding company’s net 
income over the last four quarters (net of dividends paid) is sufficient to fully fund the dividends, (2) the prospective rate of earnings 
retention appears consistent with the capital needs, asset quality and overall financial condition of the bank holding company and 
its subsidiaries and (3) the bank holding company will continue to meet minimum required capital adequacy ratios. The policy 
also provides that a bank holding company should inform the FRB reasonably in advance of declaring or paying a dividend that 
exceeds earnings for the period for which the dividend is being paid or that could result in a material adverse change to the bank 
holding company’s capital structure. Bank holding companies also are required to consult with the FRB before redeeming or 
repurchasing capital instruments (including common stock), or materially increasing dividends.

Transactions with Affiliates

Federal banking laws and regulations impose qualitative standards and quantitative limitations upon certain transactions 
between a bank and its affiliates, including between Comerica and its nonbank subsidiaries, on the one hand, and Comerica’s 
affiliate insured depository institutions, on the other. For example, Section 23A of the Federal Reserve Act limits the aggregate 
outstanding amount of any insured depository institution’s loans and other “covered transactions” with any particular nonbank 
affiliate (including financial subsidiaries) to no more than 10% of the institution’s total capital and limits the aggregate outstanding 
amount of any insured depository institution’s covered transactions with all of its nonbank affiliates to no more than 20% of its 
total capital. “Covered transactions” are defined by statute to include (i) a loan or extension of credit, (ii) a purchase of securities 
issued by an affiliate, (iii) a purchase of assets (unless otherwise exempted by the FRB) from the affiliate, (iv) the acceptance of 
securities issued by the affiliate as collateral for a loan, (v) the issuance of a guarantee, acceptance or letter of credit on behalf of 
an affiliate and (vi) securities borrowing or lending transactions and derivative transactions with an affiliate, to the extent that 
either causes a bank or its affiliate to have credit exposure to the securities borrowing/lending or derivative counterparty. Section 23A 
of the Federal Reserve Act also generally requires that an insured depository institution’s loans to its nonbank affiliates be, at a 
minimum, 100% secured, and Section 23B of the Federal Reserve Act generally requires that an insured depository institution’s 
transactions with its nonbank affiliates be on terms and under circumstances that are substantially the same or at least as favorable 
as those prevailing for comparable transactions with nonaffiliates. Federal banking laws also place similar restrictions on loans 
and other extensions of credit by FDIC-insured banks, such as Comerica Bank and Comerica Bank & Trust, National Association, 
and their subsidiaries to their directors, executive officers and principal shareholders.

Data Privacy and Cybersecurity Regulation

Comerica is subject to many U.S. federal, U.S. state and international laws and regulations governing consumer data 
privacy protection, which require, among other things, maintaining policies and procedures to protect the non-public confidential 
information of customers and employees. The privacy provisions of the Gramm-Leach-Bliley Act generally prohibit financial 
institutions,  including  Comerica  and  its  subsidiaries,  from  disclosing  nonpublic  personal  financial  information  of  consumer 
customers to third parties for certain purposes (primarily marketing) unless customers have the opportunity to “opt out” of the 
disclosure.  Other  laws  and  regulations,  at  the  international,  federal  and  state  levels,  limit  Comerica’s  ability  to  share  certain 
information with affiliates and non-affiliates for marketing and/or non-marketing purposes, or to contact customers with marketing 
offers. The Gramm-Leach-Bliley Act also requires banks to implement a comprehensive information security program that includes 
administrative, technical and physical safeguards to ensure the security and confidentiality of customer records and information. 
Because we have a limited presence in New York, we are subject to certain requirements of the New York Department of Financial 
Service’s Cybersecurity Requirements for Financial Services Companies, which include maintaining a cybersecurity program and 
policies and breach notification requirements.

In October 2016, the federal banking regulators issued an advance notice of proposed rulemaking regarding enhanced 
cyber risk management standards, which would apply to a wide range of large financial institutions, including Comerica, and their 
third-party service providers. The proposed standards would expand existing cybersecurity regulations and guidance to focus on 
6

 
cyber risk governance and management; management of internal and external dependencies; and incident response, cyber resilience 
and situational awareness. In addition, the proposal contemplates more stringent standards for institutions with systems that are 
critical to the financial sector. Comerica is monitoring the development of this rule.

Data privacy and data protection are areas of increasing state legislative focus. For example, in June of 2018, the Governor 
of California signed into law the California Consumer Privacy Act of 2018 (the “CCPA”). The CCPA, which becomes effective 
on January 1, 2020, applies to for-profit businesses that conduct business in California and meet certain revenue or data collection 
thresholds. The CCPA will give consumers the right to request disclosure of information collected about them, and whether that 
information has been sold or shared with others, the right to request deletion of personal information (subject to certain exceptions), 
the right to opt out of the sale of the consumer’s personal information, and the right not to be discriminated against for exercising 
these rights. The CCPA contains several exemptions, including an exemption applicable to information that is collected, processed, 
sold or disclosed pursuant to the Gramm-Leach-Bliley Act. The California Attorney General has not yet proposed or adopted 
regulations implementing the CCPA, and the California State Legislature has amended the Act since its passage. Comerica has a 
physical footprint in California and will be required to comply with the CCPA. In addition, similar laws may be adopted by other 
states  where  Comerica  does  business. The  impact  of  the  CCPA  on  Comerica’s  business  is  yet  to  be  determined. The  federal 
government may also pass data privacy or data protection legislation.

Like other lenders, Comerica Bank and other of Comerica’s subsidiaries use credit bureau data in their underwriting 
activities. Use of such data is regulated under the Fair Credit Reporting Act (“FCRA”), and the FCRA also regulates reporting 
information  to  credit  bureaus,  prescreening  individuals  for  credit  offers,  sharing  of  information  between  affiliates,  and  using 
affiliate data for marketing purposes. Similar state laws may impose additional requirements on Comerica and its subsidiaries.

FDIC Insurance Assessments

The DIF provides deposit insurance coverage for certain deposits up to $250,000 per depositor in each deposit account 
category. Comerica's subsidiary banks are subject to FDIC deposit insurance assessments to maintain the DIF. The FDIC imposes 
a risk-based deposit premium assessment system, where the assessment rates for an insured depository institution are determined 
by an assessment rate calculator, which is based on a number of elements to measure the risk each institution poses to the DIF. 
The assessment rate is applied to total average assets less tangible equity. Under the current system, premiums are assessed quarterly 
and could increase if, for example, criticized loans and/or other higher risk assets increase or balance sheet liquidity decreases. 
For 2018, Comerica’s FDIC insurance expense totaled $42 million, including the DIF surcharge that was in place from mid-2016 
until September 30, 2018. For 2019, management expects a reduction in deposit insurance assessments of $16 million as a result 
of the elimination of the DIF surcharge.

Anti-Money Laundering Regulations

The Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism 
Act (“USA PATRIOT Act”) of 2001 and its implementing regulations require insured depository institutions, broker-dealers, and 
certain other financial institutions to have policies, procedures, and controls to detect, prevent, and report money laundering and 
terrorist financing. The USA PATRIOT Act and its regulations also provide for information sharing, subject to conditions, between 
federal law enforcement agencies and financial institutions, as well as among financial institutions, for counter-terrorism purposes. 
Federal banking regulators are required, when reviewing bank holding company acquisition and bank merger applications, to take 
into account the effectiveness of the anti-money laundering activities of the applicants. To comply with these obligations, Comerica 
and its various operating units have implemented appropriate internal practices, procedures, and controls.

Office of Foreign Assets Control Regulation 

The  Office  of  Foreign  Assets  Control  (“OFAC”)  is  responsible  for  administering  economic  sanctions  that  affect 
transactions with designated foreign countries, nationals and others, as defined by various Executive Orders and Acts of Congress. 
OFAC-administered sanctions take many different forms. For example, sanctions may include: (1) restrictions on trade with or 
investment in a sanctioned country, including prohibitions against direct or indirect imports from and exports to a sanctioned 
country  and  prohibitions  on  U.S.  persons  engaging  in  financial  transactions  relating  to,  making  investments  in,  or  providing 
investment-related advice or assistance to, a sanctioned country; and (2) a blocking of assets in which the government or “specially 
designated nationals” of the sanctioned country have an interest, by prohibiting transfers of property subject to U.S. jurisdiction 
(including property in the possession or control of U.S. persons). OFAC also publishes lists of persons, organizations, and countries 
suspected of aiding, harboring or engaging in terrorist acts, known as Specially Designated Nationals and Blocked Persons. Blocked 
assets (e.g., property and bank deposits) cannot be paid out, withdrawn, set off or transferred in any manner without a license from 
OFAC. Failure to comply with these sanctions could have serious legal and reputational consequences. 

7

 
 
 
Interstate Banking and Branching

The Interstate Banking and Branching Efficiency Act (the “Interstate Act”), as amended by the Dodd-Frank Act, permits 
a bank holding company, with FRB approval, to acquire banking institutions located in states other than the bank holding company's 
home state without regard to whether the transaction is prohibited under state law, but subject to any state requirement that the 
bank has been organized and operating for a minimum period of time, not to exceed five years, and the requirement that the bank 
holding company, prior to and following the proposed acquisition, control no more than 10 percent of the total amount of deposits 
of insured depository institutions in the U.S. and no more than 30 percent of such deposits in that state (or such amount as established 
by state law if such amount is lower than 30 percent). The Interstate Act, as amended, also authorizes banks to operate branch 
offices outside their home states by merging with out-of-state banks, purchasing branches in other states and by establishing de 
novo branches in other states, subject to various conditions. In the case of purchasing branches in a state in which it does not 
already have banking operations, de novo interstate branching is permissible if under the law of the state in which the branch is 
to be located, a state bank chartered by that state would be permitted to establish the branch. A bank holding company or bank 
must be well capitalized and well managed in order to take advantage of these interstate banking and branching provisions.

Comerica has consolidated the majority of its banking business into one bank, Comerica Bank, with banking centers in 

Texas, Arizona, California, Florida and Michigan, as well as Canada.

Source of Strength and Cross-Guarantee Requirements

Federal law and FRB regulations require that bank holding companies serve as a source of strength to each subsidiary 
bank and commit resources to support each subsidiary bank. This support may be required at times when a bank holding company 
may not be able to provide such support without adversely affecting its ability to meet other obligations. The FRB may require a 
bank holding company to make capital injections into a troubled subsidiary bank and may charge the bank holding company with 
engaging in unsafe and unsound practices if the bank holding company fails to commit resources to such a subsidiary bank or if 
it undertakes actions that the FRB believes might jeopardize the bank holding company’s ability to commit resources to such 
subsidiary bank. Under these requirements, Comerica may in the future be required to provide financial assistance to its subsidiary 
banks should they experience financial distress. Capital loans by Comerica to its subsidiary banks would be subordinate in right 
of payment to deposits and certain other debts of the subsidiary banks. In the event of Comerica’s bankruptcy, any commitment 
by Comerica to a federal bank regulatory agency to maintain the capital of its subsidiary banks would be assumed by the bankruptcy 
trustee and entitled to a priority of payment.

Similarly, under the cross-guarantee provisions of the Federal Deposit Insurance Act, in the event of a loss suffered or 
anticipated by the FDIC (either as a result of the failure of a banking subsidiary or related to FDIC assistance provided to such a 
subsidiary in danger of failure), the other banking subsidiaries may be assessed for the FDIC’s loss, subject to certain exceptions. 
An FDIC cross-guarantee claim against a depository institution is superior in right of payment to claims of the holding company 
and its affiliates against such depository institution.

Supervisory and Enforcement Powers of Federal and State Banking Agencies

The FRB and other federal and state banking agencies have broad supervisory and enforcement powers, including, without 
limitation, and as prescribed to each agency by applicable law, the power to conduct examinations and investigations, impose 
nonpublic supervisory agreements, issue cease and desist orders, terminate deposit insurance, impose substantial fines and other 
civil penalties and appoint a conservator or receiver. Failure to comply with applicable laws or regulations could subject Comerica 
or its banking subsidiaries, as well as officers and directors of these organizations, to administrative sanctions and potentially 
substantial civil and criminal penalties. Bank regulators regularly examine the operations of bank holding companies and banks, 
and the results of these examinations, as well as certain supervisory and enforcement actions, are confidential and may not be 
made public. 

Resolution Plans

Before the enactment of EGRRCPA, Comerica was required to prepare and submit a resolution plan to the FRB and 
FDIC. As discussed above, pursuant to EGRRCPA, Comerica is now exempt from this requirement as a bank holding company 
with less than $100 billion in total consolidated assets.  

EGRRCPA  did  not  change  the  FDIC’s  rules  that  require  depository  institutions  with  $50  billion  or  more  of  total 
consolidated assets, including Comerica Bank, to periodically file a separate resolution plan. The FDIC’s Chairman, however, has 
stated that the FDIC intends to release an advanced notice of proposed rulemaking with respect to the FDIC’s bank resolution plan 
requirements meant to better tailor bank resolution plans to a firm’s size, complexity and risk profile. 

Incentive-Based Compensation

Comerica is subject to guidance issued by the FRB, OCC and FDIC intended to ensure that the incentive compensation 
policies of banking organizations do not undermine the safety and soundness of such organizations by encouraging excessive risk-
taking. The guidance, which covers senior executives as well as other employees who, either individually or as part of a group, 
8

 
have the ability to expose the banking organization to material amounts of risk, is based upon the key principles that a banking 
organization's incentive compensation arrangements (i) should provide employees incentives that appropriately balance risk and 
financial results in a manner that does not encourage employees to expose their organizations to imprudent risk; (ii) should be 
compatible with effective controls and risk-management; and (iii) should be supported by strong corporate governance, including 
active and effective oversight by the organization's board of directors. Banking organizations are expected to review regularly 
their  incentive  compensation  arrangements  based  on  these  three  principles.  Where  there  are  deficiencies  in  the  incentive 
compensation arrangements, they should be promptly addressed. Enforcement actions may be taken against a banking organization 
if  its  incentive  compensation  arrangements,  or  related  risk-management  control  or  governance  processes,  pose  a  risk  to  the 
organization's safety and soundness, particularly if the organization is not taking prompt and effective measures to correct the 
deficiencies.  Similar  to  other  large  banking  organizations,  Comerica  has  been  subject  to  a  continuing  review  of  incentive 
compensation policies and practices by representatives of the FRB, the Federal Reserve Bank of Dallas and the Texas Department 
of Banking since 2011. As part of that review, Comerica has undertaken a thorough analysis of all the incentive compensation 
programs  throughout  the  organization,  the  individuals  covered  by  each  plan  and  the  risks  inherent  in  each  plan’s  design  and 
implementation. Comerica has determined that risks arising from employee compensation plans are not reasonably likely to have 
a material adverse effect on Comerica. It is Comerica’s intent to continue to evolve its incentive compensation processes going 
forward by monitoring regulations and best practices for sound incentive compensation.

In  2016,  the  FRB,  OCC  and  several  other  federal  financial  regulators  revised  and  re-proposed  rules  to  implement 
Section 956  of  the  Dodd-Frank Act.  Section 956  directed  regulators  to  jointly  prescribe  regulations  or  guidelines  prohibiting 
incentive-based payment arrangements, or any feature of any such arrangement, at covered financial institutions that encourage 
inappropriate risks by providing excessive compensation or that could lead to a material financial loss. This proposal supplements 
the final guidance issued by the banking agencies in June 2010. Consistent with the Dodd-Frank Act, the proposed rule would 
impose heightened standards for institutions with $50 billion or more in total consolidated assets, which includes Comerica. For 
these  larger  institutions,  the  proposed  rule  would  require  the  deferral  of  at  least  40  percent  of  incentive-based  payments  for 
designated executives and significant risk-takers who individually have the ability to expose the institution to possible losses that 
are substantial in relation to the institution's size, capital or overall risk tolerance. Moreover, incentive-based compensation of 
these individuals would be subject to potential clawback for seven years following vesting. Further, the rule imposes enhanced 
risk management controls and governance and internal policy and procedure requirements with respect to incentive compensation. 
Comerica is monitoring the development of this rule.

The Volcker Rule 

Comerica is prohibited under the Volcker Rule from (1) engaging in short-term proprietary trading for its own account 
and (2) having certain ownership interests in and relationships with hedge funds or private equity funds ("Covered Funds"). The 
Volcker Rule regulations contain exemptions for market-making, hedging, underwriting and trading in U.S. government and agency 
obligations, and also permit certain ownership interests in certain types of Covered Funds to be retained. They also permit the 
offering and sponsoring of Covered Funds under certain conditions. The Volcker Rule regulations impose significant compliance 
and reporting obligations on banking entities. 

Comerica has put in place the compliance programs currently required by the Volcker Rule and has either divested or 
received extensions for any holdings in Covered Funds. Additional information on Comerica's portfolio of indirect (through funds) 
private equity and venture capital investments, which includes the Covered Funds, is set forth in Note 1 of the Notes to Consolidated 
Financial Statements located on page F-49 of the Financial Section of this report. 

In May 2018, the five federal agencies with rulemaking authority with respect to the Volcker Rule released a proposal 
to revise the Volcker Rule. The proposal would tailor the Volcker Rule’s compliance requirements to the amount of a firm’s trading 
activity, revise the definition of trading account, clarify certain key provisions in the Volcker Rule, and modify the information 
companies are required to provide the federal agencies. Comerica is following the development of this proposed rule.

Derivative Transactions

As a state member bank, Comerica Bank may engage in derivative transactions, as permitted by applicable Texas and 
federal  law. Title VII  of  the  Dodd-Frank Act  contains  a  comprehensive  framework  for  over-the-counter  (“OTC”)  derivatives 
transactions. Even though many of the requirements do not impact Comerica directly, since Comerica Bank does not meet the 
definition  of  swap  dealer  or  “major  swap  participant,”  Comerica  continues  to  review  and  evaluate  the  extent  to  which  such 
requirements impact its business indirectly. On November 5, 2018, the CFTC issued a final rule that sets the permanent aggregate 
gross notional amount threshold for the de minimis exception from the definition of swap dealer at $8 billion in swap dealing 
activity entered into by a person over the preceding 12 months. Comerica's swap dealing activities are currently below this threshold.

The initial margin requirements for non-centrally cleared swaps and security-based swaps will be effective for Comerica’s 
swap and security-based swap counterparties that are swap dealers on September 1, 2020, at which time such counterparties will 
be required to collect initial margin from Comerica.  The initial margin requirements were issued for the purpose of ensuring safety 

9

and soundness of swap trading in light of the risk to the financial system associated with non-cleared swaps activity.  Comerica 
is currently working toward meeting compliance with the initial margin requirements.

Consumer Financial Protection Bureau and Certain Recent Consumer Finance Regulations

Comerica is subject to regulation by the Consumer Financial Protection Bureau (“CFPB”), which has a broad rule-making 
authority for a wide range of consumer protection laws that apply to all banks and savings institutions and possesses examination 
and enforcement authority over all banks and savings institutions with more than $10 billion in assets, including Comerica Bank, 
and their depositary affliates.

Comerica is also subject to certain state consumer protection laws, and under the Dodd-Frank Act, state attorneys general 
and other state officials are empowered to enforce certain federal consumer protection laws and regulations. In recent years, state 
authorities have increased their focus on and enforcement of consumer protection rules. These federal and state consumer protection 
laws apply to a broad range of Comerica’s activities and to various aspects of its business and include laws relating to interest 
rates, fair lending, disclosures of credit terms and estimated transaction costs to consumer borrowers, debt collection practices, 
the use of and the provision of information to consumer reporting agencies, and the prohibition of unfair, deceptive or abusive 
acts or practices in connection with the offer, sale or provision of consumer financial products and services.

The CFPB has issued final rules changing the reporting requirements for lenders under the Home Mortgage Disclosure 
Act. The new rules expand the range of transactions subject to these requirements to include most securitized residential mortgage 
loans and credit lines. The rules also increase the overall amount of data required to be collected and submitted, including additional 
data points about the applicable loans and expanded data about the borrowers. Comerica began collecting the expanded data on 
January 1, 2018.

Flood Insurance Rules

Comerica continues to monitor the development and implementation of the private flood insurance requirements. To date, 
the joint agencies have yet to issue a final rule with respect to this remaining requirement. All other flood insurance requirements 
subject to the Final Rule - Loans in Areas Having Special Flood Hazards, including the escrow of premium and fees for certain 
real estate loans, are now effective and have been implemented by Comerica. 

UNDERWRITING APPROACH

The loan portfolio is a primary source of profitability and risk, so proper loan underwriting is critical to Comerica's long-
term financial success. Comerica extends credit to businesses, individuals and public entities based on sound lending principles 
and consistent with prudent banking practice. During the loan underwriting process, a qualitative and quantitative analysis of 
potential  credit  facilities  is  performed,  and  the  credit  risks  associated  with  each  relationship  are  evaluated.  Important  factors 
considered as part of the underwriting process for new loans and loan renewals include:

• 

• 

• 

• 

• 

People: Including the competence, integrity and succession planning of customers.

Purpose: The legal, logical and productive purposes of the credit facility.

Payment: Including the source, timing and probability of payment.

Protection: Including obtaining alternative sources of repayment, securing the loan, as appropriate, with collateral 
and/or third-party guarantees and ensuring appropriate legal documentation is obtained.

Perspective: The risk/reward relationship and pricing elements (cost of funds; servicing costs; time value of 
money; credit risk).

Comerica prices credit facilities to reflect risk, the related costs and the expected return, while maintaining competitiveness 
with other financial institutions. Loans with variable and fixed rates are underwritten to achieve expected risk-adjusted returns on 
the credit facilities and for the full relationship including the borrower's ability to repay the principal and interest based on such 
rates.

Credit Approval and Monitoring 

Approval of new loan exposure and oversight and monitoring of Comerica's loan portfolio is the joint responsibility of 
the Credit Risk Management and Decisioning department and the Credit Underwriting department (collectively referred to as 
“Credit”), plus the business units (“Line’). Credit assists the Line with underwriting by providing objective financial analysis, 
including an assessment of the borrower's business model, balance sheet, cash flow and collateral. The approval of new loan 
exposure  is  the  joint  responsibility  of  Credit  Risk  Management  and  Decisioning  and  the  Line.  Each  commercial  borrower 
relationship is assigned an internal risk rating by Credit Risk Management and Decisioning. Further, Credit updates the assigned 
internal risk rating as new information becomes available as a result of periodic reviews of credit quality, a change in borrower 
performance  or  approval  of  new  loan  exposure. The  goal  of  the  internal  risk  rating  framework  is  to  support  Comerica's  risk 
management capability, including its ability to identify and manage changes in the credit risk profile of its portfolio, predict future 
10

 
losses and price the loans appropriately for risk. Finally, the Line and Credit (including its Portfolio Risk Analytics department) 
work together to insure the overall credit risk within the loan portfolio is consistent with the bank’s Credit Risk Appetite.

Credit Policy

Comerica maintains a comprehensive set of credit policies. Comerica's credit policies provide individual relationship 
managers, as well as loan committees, approval authorities based on its internal risk-rating system and establish maximum exposure 
limits based on risk ratings and Comerica's legal lending limit. Credit, in conjunction with the Line, monitors compliance with 
the credit policies and modifies the existing policies as necessary. New or modified policies/guidelines require approval by the 
Strategic Credit Committee, chaired by Comerica's Chief Credit Officer and comprised of senior credit, market and risk management 
executives.

Commercial Loan Portfolio

Commercial loans are underwritten using a comprehensive analysis of the borrower's operations. The underwriting process 

includes an analysis of some or all of the factors listed below:

• 

• 

• 

• 

• 

• 

• 

• 

The borrower's business model.

Periodic review of financial statements including financial statements audited by an independent certified public 
accountant when appropriate.

The proforma financial condition including financial projections.

The borrower's sources and uses of funds.

The borrower's debt service capacity.

The guarantor's financial strength.

A comprehensive review of the quality and value of collateral, including independent third-party appraisals of 
machinery and equipment and commercial real estate, as appropriate, to determine the advance rates.

Physical inspection of collateral and audits of receivables, as appropriate.

For additional information specific to our Energy loan portfolio, please see the caption, “Energy Lending” on page F-28

of the Financial Section of this report.

Commercial Real Estate (CRE) Loan Portfolio

Comerica's CRE loan portfolio consists of real estate construction and commercial mortgage loans and includes loans 
to real estate developers and investors and loans secured by owner-occupied real estate. Comerica's CRE loan underwriting policies 
are consistent with the approach described above and provide maximum loan-to-value ratios that limit the size of a loan to a 
maximum percentage of the value of the real estate collateral securing the loan. The loan-to-value percentage varies by the type 
of collateral and is limited by advance rates established by our regulators. Our loan-to-value limitations are, in certain cases, more 
restrictive than those required by regulators and are influenced by other risk factors such as the financial strength of the borrower 
or guarantor, the equity provided to the project and the viability of the project itself. CRE loans generally require cash equity. CRE 
loans are normally originated with full recourse or limited recourse to all principals and owners. There are limitations to the size 
of a single project loan and to the aggregate dollar exposure to a single guarantor.

Consumer and Residential Mortgage Loan Portfolios

Comerica's consumer and residential mortgage loan underwriting includes an assessment of each borrower's personal 
financial condition, including a review of credit reports and related FICO scores (a type of credit score used to assess an applicant's 
credit risk) and verification of income and assets, as applicable. After origination, internal risk ratings are assigned based on 
payment status and product type.

Comerica  does  not  originate  subprime  loans. Although  a  standard  industry  definition  for  subprime  loans  (including 
subprime mortgage loans) does not exist, Comerica defines subprime loans as specific product offerings for higher risk borrowers, 
including individuals with one or a combination of high credit risk factors. These credit factors include low FICO scores, poor 
patterns of payment history, high debt-to-income ratios and elevated loan-to-value. Comerica generally considers subprime FICO 
scores to be those below 620 on a secured basis (excluding loans with cash or near-cash collateral and adequate income to make 
payments) and below 660 for unsecured loans. Residential mortgage loans retained in the portfolio are largely relationship based. 
The  remaining  loans  are  typically  eligible  to  be  sold  on  the  secondary  market. Adjustable-rate  loans  are  limited  to  standard 
conventional loan programs. 

EMPLOYEES

As of December 31, 2018, Comerica and its subsidiaries had 7,573 full-time and 478 part-time employees.

11

 
 
AVAILABLE INFORMATION

Comerica maintains an Internet website at www.comerica.com where the Annual Report on Form 10-K, Quarterly Reports 
on Form 10-Q, Current Reports on Form 8-K and all amendments to those reports are available without charge, as soon as reasonably 
practicable after those reports are filed with or furnished to the SEC. The Code of Business Conduct and Ethics for Employees, 
the Code of Business Conduct and Ethics for Members of the Board of Directors and the Senior Financial Officer Code of Ethics 
adopted by Comerica are also available on the Internet website and are available in print to any shareholder who requests them. 
Such requests should be made in writing to the Corporate Secretary at Comerica Incorporated, Comerica Bank Tower, 1717 Main 
Street, MC 6404, Dallas, Texas 75201. 

In addition, pursuant to regulations adopted by the FRB, Comerica makes additional regulatory capital-related disclosures. 
Under these regulations, Comerica satisfies a portion of these requirements through postings on its website, and Comerica has 
done so and expects to continue to do so without also providing disclosure of this information through filings with the SEC. 

Where we have included web addresses in this report, such as our web address and the web address of the SEC, we have 
included those web addresses as inactive textual references only. Except as specifically incorporated by reference into this report, 
information on those websites is not part hereof. 

Item 1A.  Risk Factors.

This report includes forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. In 
addition, Comerica may make other written and oral communications from time to time that contain such statements. All statements 
regarding Comerica's expected financial position, strategies and growth prospects and general economic conditions Comerica 
expects  to  exist  in  the  future  are  forward-looking  statements.  The  words,  “anticipates,”  “believes,”  “contemplates,”  “feels,” 
“expects,” “estimates,” “seeks,” “strives,” “plans,” “intends,” “outlook,” “forecast,” “position,” “target,” “mission,” “assume,” 
“achievable,”  “potential,”  “strategy,”  “goal,”  “aspiration,”  “opportunity,”  “initiative,”  “outcome,”  “continue,”  “remain,” 
“maintain,” “on track,” “trend,” “objective,” “looks forward,” “projects,” “models” and variations of such words and similar 
expressions, or future or conditional verbs such as “will,” “would,” “should,” “could,” “might,” “can,” “may” or similar expressions, 
as they relate to Comerica or its management, are intended to identify forward-looking statements.

Comerica cautions that forward-looking statements are subject to numerous assumptions, risks and uncertainties, which 
change over time. Forward-looking statements speak only as of the date the statement is made, and Comerica does not undertake 
to update forward-looking statements to reflect facts, circumstances, assumptions or events that occur after the date the forward-
looking statements are made. Actual results could differ materially from those anticipated in forward-looking statements and future 
results could differ materially from historical performance.

In addition to factors mentioned elsewhere in this report or previously disclosed in Comerica's SEC reports (accessible 
on the SEC's website at www.sec.gov or on Comerica's website at www.comerica.com), the factors contained below, among others, 
could cause actual results to differ materially from forward-looking statements, and future results could differ materially from 
historical performance.

• 

General political, economic or industry conditions, either domestically or internationally, may be less favorable 
than expected.

Local, domestic, and international events including economic, financial market, political and industry specific conditions 
affect the financial services industry, directly and indirectly. The economic environment and market conditions in which 
Comerica operates continue to be uncertain. Financial market volatility increased through the fourth quarter of 2018. 
Also, economic growth in the rest of the world appears to be slowing, notably in China and in Europe. Changes to U.S. 
trade policy and reactions to changes by U.S. trading partners have also increased stress on many U.S. businesses. Most 
U.S. economic indicators continue to be positive. However, some have shown signs of weakness through the end of 2018. 
This includes residential investment, which has cooled as mortgage rates have increased. Conditions related to inflation, 
recession, unemployment, volatile interest rates, international conflicts, changes in trade policies and other factors, such 
as real estate values, energy prices, state and local municipal budget deficits, government spending and the U.S. national 
debt, outside of our control may, directly and indirectly, adversely affect Comerica.

• 

Governmental monetary and fiscal policies may adversely affect the financial services industry, and therefore 
impact Comerica's financial condition and results of operations.

Monetary and fiscal policies of various governmental and regulatory agencies, in particular the FRB, affect the financial 
services industry, directly and indirectly. The FRB regulates the supply of money and credit in the U.S. and its monetary 
and fiscal policies determine in a large part Comerica's cost of funds for lending and investing and the return that can be 
earned  on  such  loans  and  investments.  Changes  in  such  policies,  including  changes  in  interest  rates,  such  as  recent 
increases in the federal funds rate, or changes in the FRB's balance sheet, such as the FRB's continuing balance sheet 
reduction, will influence the origination of loans, the value of investments, the generation of deposits and the rates received 

12

on loans and investment securities and paid on deposits. Changes in monetary and fiscal policies are beyond Comerica's 
control and difficult to predict. Comerica's financial condition and results of operations could be materially adversely 
impacted by changes in governmental monetary and fiscal policies.

• 

Comerica’s operational or security systems or infrastructure, or those of third parties, could fail or be breached, 
which could disrupt Comerica’s business and adversely impact Comerica’s results of operations, liquidity and 
financial condition, as well as cause legal or reputational harm.

The potential for operational risk exposure exists throughout Comerica’s business and, as a result of its interactions with, 
and reliance on, third parties, is not limited to Comerica’s own internal operational functions. Comerica's operations rely 
on the secure processing, storage and transmission of confidential and other information on its technology systems and 
networks. These networks are subject to infrastructure failures, ongoing system maintenance and upgrades and planned 
network outages. The increased use of mobile and cloud technologies can heighten these and other operational risks. Any 
failure, interruption or breach in security of these systems could result in failures or disruptions in Comerica's customer 
relationship management, general ledger, deposit, loan and other systems. 

Comerica relies on its employees and third parties in its day-to-day and ongoing operations, who may, as a result of 
human error, misconduct, malfeasance or failure, or breach of Comerica’s or of third-party systems or infrastructure, 
expose Comerica to risk. For example, Comerica’s ability to conduct business may be adversely affected by any significant 
disruptions to Comerica or to third parties with whom Comerica interacts or upon whom it relies. Although Comerica 
has  programs  in  place  related  to  business  continuity,  disaster  recovery  and  information  security  to  maintain  the 
confidentiality, integrity and availability of its systems, business applications and customer information, such disruptions 
may still give rise to interruptions in service to customers and loss or liability to Comerica, including loss of customer 
data. In addition, Comerica’s ability to implement backup systems and other safeguards with respect to third-party systems 
is more limited than with respect to its own systems. 

Comerica’s financial, accounting, data processing, backup or other operating or security systems and infrastructure may 
fail to operate properly or become disabled or damaged as a result of a number of factors, including events that are wholly 
or partially beyond its control, which could adversely affect its ability to process transactions or provide services. Such 
events  may  include  sudden  increases  in  customer  transaction  volume  and/or  customer  activity;  electrical, 
telecommunications  or  other  major  physical  infrastructure  outages;  natural  disasters  such  as  earthquakes,  tornadoes, 
hurricanes and floods; disease pandemics; cyber attacks; and events arising from local or larger scale political or social 
matters, including wars and terrorist acts. 

The occurrence of any failure or interruption in Comerica's operations or information systems, or any security breach, 
could cause reputational damage, jeopardize the confidentiality of customer information, result in a loss of customer 
business, subject Comerica to regulatory intervention or expose it to civil litigation and financial loss or liability, any of 
which could have a material adverse effect on Comerica. 

• 

Comerica relies on other companies to provide certain key components of its delivery systems, and certain failures 
could materially adversely affect operations.

Comerica faces the risk of operational disruption, failure or capacity constraints due to its dependency on third party 
vendors for components of its delivery systems. Third party vendors provide certain key components of Comerica's 
delivery  systems,  such  as  cloud-based  computing,  networking  and  storage  services,  payment  processing  services, 
recording and monitoring services, internet connections and network access, clearing agency services and card processing 
services, and additionally will be providing trust processing services starting in 2019. While Comerica conducts due 
diligence prior to engaging with third party vendors and performs ongoing monitoring of vendor controls, it does not 
control their operations. Further, while Comerica's vendor management policies and practices are designed to comply 
with current regulations, these policies and practices cannot eliminate this risk. In this context, any vendor failure to 
properly  deliver  these  services  could  adversely  affect  Comerica’s  business  operations,  and  result  in  financial  loss, 
reputational harm, and/or regulatory action. 

• 

Comerica faces security risks, including denial of service attacks, hacking, social engineering attacks targeting 
Comerica’s colleagues and customers, malware intrusion or data corruption attempts, and identity theft that could 
result in the disclosure of confidential information, adversely affect its business or reputation, and create significant 
legal and financial exposure.

Comerica’s  computer  systems  and  network  infrastructure  and  those  of  third  parties,  on  which  Comerica  is  highly 
dependent, are subject to security risks and could be susceptible to cyber attacks, such as denial of service attacks, hacking, 
terrorist activities or identity theft. Comerica’s business relies on the secure processing, transmission, storage and retrieval 
of confidential, proprietary and other information in its computer and data management systems and networks, and in 
the computer and data management systems and networks of third parties. In addition, to access Comerica’s network, 

13

products and services, its customers and other third parties may use personal mobile devices or computing devices that 
are outside of its network environment and are subject to their own cybersecurity risks.

Cyber  attacks  could  include  computer  viruses,  malicious  or  destructive  code,  phishing  attacks,  denial  of  service  or 
information, ransomware, improper access by employees or vendors, attacks on personal email of employees, ransom 
demands to not expose security vulnerabilities in Comerica's systems or the systems of third parties, or other security 
breaches, and could result in the destruction or exfiltration of data and systems. As cyber threats continue to evolve, 
Comerica may be required to expend significant additional resources to continue to modify or enhance its protective 
measures or to investigate and remediate any information security vulnerabilities or incidents. Despite efforts to ensure 
the integrity of Comerica’s systems and implement controls, processes, policies and other protective measures, Comerica 
may not be able to anticipate all security breaches, nor may it be able to implement guaranteed preventive measures 
against such security breaches. Cyber threats are rapidly evolving and Comerica may not be able to anticipate or prevent 
all such attacks and could be held liable for any security breach or loss.

Although Comerica has programs in place related to business continuity, disaster recovery and information security to 
maintain the confidentiality, integrity, and availability of its systems, business applications and customer information, 
such disruptions may still give rise to interruptions in service to customers and loss or liability to Comerica, including 
loss of customer data. Like other financial services firms, Comerica and its third party providers continue to be the subject 
of cyber attacks. Although to this date Comerica has not experienced any material losses or other material consequences 
related to cyber attacks, future cyber attacks could be more disruptive and damaging, and Comerica may not be able to 
anticipate or prevent all such attacks. Further, cyber attacks may not be detected in a timely manner.

Cyber attacks or other information or security breaches, whether directed at Comerica or third parties, may result in a 
material loss or have material consequences. Furthermore, the public perception that a cyber attack on Comerica’s systems 
has been successful, whether or not this perception is correct, may damage its reputation with customers and third parties 
with whom it does business. Hacking of personal information and identity theft risks, in particular, could cause serious 
reputational harm. A successful penetration or circumvention of system security could cause Comerica serious negative 
consequences,  including  loss  of  customers  and  business  opportunities,  costs  associated  with  maintaining  business 
relationships  after  an  attack  or  breach;  significant  business  disruption  to  Comerica’s  operations  and  business, 
misappropriation, exposure, or destruction of its confidential information, intellectual property, funds, and/or those of its 
customers; or damage to Comerica’s or Comerica’s customers’ and/or third parties’ computers or systems, and could 
result  in  a  violation  of  applicable  privacy  laws  and  other  laws,  litigation  exposure,  regulatory  fines,  penalties  or 
intervention,  loss  of  confidence  in  Comerica’s  security  measures,  reputational  damage,  reimbursement  or  other 
compensatory  costs,  additional  compliance  costs,  and  could  adversely  impact  its  results  of  operations,  liquidity  and 
financial condition. In addition, Comerica may not have adequate insurance coverage to compensate for losses from a 
cybersecurity event.

• 

Proposed revenue enhancements and efficiency improvements may not be achieved.

In July 2016, Comerica announced its efficiency and revenue program, GEAR Up (the "program") and initial financial 
targets.  Several  initiatives  continue  to  be  implemented  within  the  program.  There  may  be  changes  in  the  scope  or 
assumptions underlying the program, delays in the anticipated timing of activities related to the program and higher than 
expected or unanticipated costs to implement them, and some benefits may not be fully achieved. As well, even if the 
program is successful, many factors can influence the amount of core noninterest expenses, some of which are not wholly 
in our control, including changing regulations, benefits and health care costs, technology and cybersecurity investments, 
outside processing expenses and litigation. 

Furthermore, the implementation of the program may have unintended impacts on Comerica's ability to attract and retain 
business, customers and employees, and could result in disruptions to systems, processes, controls and procedures. Any 
revenue enhancement ideas may not be successful in the marketplace. Accordingly, Comerica's results of operations and 
profitability may be negatively impacted, making it less competitive and potentially causing a loss of market share. 
Additionally, Comerica's future performance is subject to the various risks inherent to its business and operations. 

• 

Comerica must maintain adequate sources of funding and liquidity to meet regulatory expectations, support its 
operations and fund outstanding liabilities.

Comerica’s  liquidity  and  ability  to  fund  and  run  its  business  could  be  materially  adversely  affected  by  a  variety  of 
conditions and factors, including financial and credit market disruptions and volatility, a lack of market or customer 
confidence in financial markets in general, or deposit competition as interest rates increase, which may result in a loss 
of customer deposits or outflows of cash or collateral and/or adversely affect Comerica's ability to access capital markets 
on favorable terms. 

14

Other conditions and factors that could materially adversely affect Comerica’s liquidity and funding include a lack of 
market or customer confidence in, or negative news about, Comerica or the financial services industry generally which 
also may result in a loss of deposits and/or negatively affect Comerica's ability to access the capital markets; the loss of 
customer  deposits  to  alternative  investments;  counterparty  availability;  interest  rate  fluctuations;  general  economic 
conditions; and the legal, regulatory, accounting and tax environments governing Comerica's funding transactions. Many 
of the above conditions and factors may be caused by events over which Comerica has little or no control. There can be 
no  assurance  that  significant  disruption  and  volatility  in  the  financial  markets  will  not  occur  in  the  future.  Further, 
Comerica's customers may be adversely impacted by such conditions, which could have a negative impact on Comerica's 
business, financial condition and results of operations.

Further, if Comerica is unable to continue to fund assets through customer bank deposits or access funding sources on 
favorable terms, or if Comerica suffers an increase in borrowing costs or otherwise fails to manage liquidity effectively, 
Comerica’s liquidity, operating margins, financial condition and results of operations may be materially adversely affected. 

• 

Compliance with stringent capital requirements may adversely affect Comerica.

Comerica is required to satisfy stringent regulatory capital standards, as set forth in the “Supervision and Regulation” 
section of this report. These requirements, and any other new laws or regulations related to capital and liquidity, could 
adversely affect Comerica's ability to pay dividends or make equity repurchases, or could require Comerica to reduce 
business levels or to raise capital, including in ways that may adversely affect its results of operations or financial condition 
and/or existing shareholders. Maintaining higher levels of capital may reduce Comerica's profitability and otherwise 
adversely affect its business, financial condition, or results of operations.

• 

Declines in the businesses or industries of Comerica's customers could cause increased credit losses or decreased 
loan balances, which could adversely affect Comerica.

Comerica's business customer base consists, in part, of customers in volatile businesses and industries such as the energy 
industry, the automotive production industry and the real estate business. These industries are sensitive to global economic 
conditions, supply chain factors and/or commodities prices. Any decline in one of those customers' businesses or industries 
could cause increased credit losses, which in turn could adversely affect Comerica. Further, any decline in these businesses 
or industries could cause decreased borrowings, either due to reduced demand or reductions in the borrowing base available 
for each customer loan. 

For  more  information  regarding  certain  of  Comerica's  lines  of  business,  please  see  "Concentration  of  Credit  Risk," 
"Commercial Real Estate Lending," "Residential Real Estate Lending" and “Energy Lending” on pages F-26 through 
F-28 of the Financial Section of this report. 

• 

Unfavorable developments concerning credit quality could adversely affect Comerica's financial results.

Although Comerica regularly reviews credit exposure related to its customers and various industry sectors in which it 
has business relationships, default risk may arise from events or circumstances that are difficult to detect or foresee. 
Under such circumstances, Comerica could experience an increase in the level of provision for credit losses, nonperforming 
assets, net charge-offs and reserve for credit losses, which could adversely affect Comerica's financial results.

• 

Changes in regulation or oversight may have a material adverse impact on Comerica's operations.

Comerica is subject to extensive regulation, supervision and examination by the U.S. Treasury, the Texas Department of 
Banking, the FDIC, the FRB, the OCC, the SEC, FINRA, DOL, MSRB and other regulatory bodies. Such regulation and 
supervision  governs  and  limits  the  activities  in  which  Comerica  may  engage.  Regulatory  authorities  have  extensive 
discretion in their supervisory and enforcement activities, including the imposition of restrictions on Comerica's operations 
and  ability  to  make  acquisitions,  investigations  and  limitations  related  to  Comerica's  securities,  the  classification  of 
Comerica's assets and determination of the level of Comerica's allowance for loan losses. Any change in such regulation 
and oversight, whether in the form of regulatory policy, regulations, legislation or supervisory action, may have a material 
adverse impact on Comerica's business, financial condition or results of operations. The impact of any future legislation 
or regulatory actions may adversely affect Comerica's businesses or operations.

• 

Cybersecurity and data privacy are areas of heightened legislative and regulatory focus.

As cybersecurity and data privacy risks for banking organizations and the broader financial system have significantly 
increased in recent years, cybersecurity and data privacy issues have become the subject of increasing legislative and 
regulatory focus. The federal bank regulatory agencies have proposed enhanced cyber risk management standards, which 
would apply to a wide range of large financial institutions and their third-party service providers, including Comerica 
and  its  bank  subsidiaries,  and  would  focus  on  cyber  risk  governance  and  management,  management  of  internal  and 
external dependencies, and incident response, cyber resilience and situational awareness. Several states have also proposed 
or adopted cybersecurity legislation and regulations, which require, among other things, notification to affected individuals 

15

when there has been a security breach of their personal data. For more information regarding cybersecurity regulation, 
refer to the “Supervision and Regulation” section of this report.

Comerica receives, maintains and stores non-public personal information of Comerica’s customers and counterparties, 
including, but not limited to, personally identifiable information and personal financial information. The sharing, use, 
disclosure and protection of this information are governed by federal and state law. Both personally identifiable information 
and personal financial information is increasingly subject to legislation and regulation, the intent of which is to protect 
the privacy of personal information that is collected and handled. For example, in June of 2018, the Governor of California 
signed into law the CCPA. The CCPA, which becomes effective on January 1, 2020, applies to for-profit businesses that 
conduct business in California and meet certain revenue or data collection thresholds, including Comerica. For more 
information regarding data privacy regulation, refer to the “Supervision and Regulation” section of this report.

Comerica may become subject to new legislation or regulation concerning cybersecurity or the privacy of personally 
identifiable information and personal financial information or of any other information Comerica may store or maintain. 
Comerica could be adversely affected if new legislation or regulations are adopted or if existing legislation or regulations 
are modified such that Comerica is required to alter its systems or require changes to its business practices or privacy 
policies. If cybersecurity, data privacy, data protection, data transfer or data retention laws are implemented, interpreted 
or applied in a manner inconsistent with Comerica’s current practices, it may be subject to fines, litigation or regulatory 
enforcement actions or ordered to change its business practices, policies or systems in a manner that adversely impacts 
Comerica’s operating results.

• 

Fluctuations in interest rates and their impact on deposit pricing could adversely affect Comerica's net interest 
income and balance sheet.

The operations of financial institutions such as Comerica are dependent to a large degree on net interest income, which 
is the difference between interest income from loans and investments and interest expense on deposits and borrowings. 
Prevailing  economic  conditions  and  the  trade,  fiscal  and  monetary  policies  of  the  federal  government  and  various 
regulatory agencies all affect market rates of interest and the availability and cost of credit, which in turn significantly 
affect financial institutions' net interest income and the market value of its investment securities. For a discussion of 
Comerica's interest rate sensitivity, please see, “Market and Liquidity Risk” beginning on page F-29 of the Financial 
Section of this report.

While recent interest rate rises have benefited Comerica's net interest income, higher interest rates can also lead to fewer 
loan originations, lower returns on investment securities and increased competition for deposits. In particular, Comerica's 
funding costs may continue to increase if it raises deposit rates to avoid losing customer deposits, or if it loses customer 
deposits and must rely on more expensive sources of funding. Higher funding costs will reduce Comerica's net interest 
margin and net interest income.  

Volatility in interest rates can also result in disintermediation, which is the flow of funds away from financial institutions 
into direct investments, such as federal government and corporate securities and other investment vehicles, which, because 
of the absence of federal insurance premiums and reserve requirements, generally pay higher rates of return than financial 
institutions. Comerica's financial results could be materially adversely impacted by changes in financial market conditions.

• 

Interest rates on Comerica's outstanding financial instruments might be subject to change based on developments 
related to LIBOR, which could adversely affect its revenue, expenses, and the value of those financial instruments.

On July 27, 2017, the United Kingdom’s Financial Conduct Authority, which regulates LIBOR, publicly announced that 
it intends to stop persuading or compelling banks to submit LIBOR rates after 2021. It is expected that a transition away 
from the widespread use of LIBOR to alternative rates will occur over the course of the next several years. While there 
is no consensus on what rate or rates may become accepted alternatives to LIBOR, the Alternative Reference Rates 
Committee, a steering committee comprised of U.S. financial market participants, selected and the Federal Reserve Bank 
of New York started in May 2018 to publish the Secured Overnight Finance Rate (“SOFR”) as an alternative to LIBOR.  
SOFR is a broad measure of the cost of borrowing cash in the overnight U.S. treasury repo market. At this time, it is 
impossible to predict whether the SOFR or another reference rate will become an accepted alternative to LIBOR.

Comerica's loan composition at December 31, 2018 was 62 percent 30-day LIBOR, 13 percent other LIBOR (primarily 
60-day), 16 percent prime and 9 percent fixed rate. The market transition away from LIBOR to an alternative reference 
rate, including SOFR, is complex and could have a range of adverse effects on our business, financial condition and 
results of operations. In particular, any such transition could:

• 
adversely affect the interest rates paid or received on, and the revenue and expenses associate with, 
Comerica’s floating rate obligations, loans, deposits, derivatives, and other financial instruments tied to LIBOR 
rates, or other securities or financial arrangements given LIBOR’s role in determining market interest rates 
globally;

16

• 
adversely affect the value of Comerica’s floating rate obligations, loans, deposits, derivatives, and other 
financial instruments tied to LIBOR rates, or other securities or financial arrangements given LIBOR’s role in 
determining market interest rates globally;

• 
for the replacement of LIBOR with an alternative reference rate;

prompt inquiries or other actions from regulators in respect of Comerica’s preparation and readiness 

• 
enforceability of certain fallback language in LIBOR-based securities; and

result  in  disputes,  litigation  or  other  actions  with  counterparties  regarding  the  interpretation  and 

• 
require the transition to or development of appropriate systems and analytics to effectively transition 
Comerica’s risk management processes from LIBOR-based products to those based on the applicable alternative 
pricing benchmark, such as SOFR.

The manner and impact of this transition, as well as the effect of these developments on Comerica’s funding costs, loan 
and investment and trading securities portfolios, asset-liability management, and business, is uncertain.

• 

Reduction in our credit ratings could adversely affect Comerica and/or the holders of its securities.

Rating agencies regularly evaluate Comerica, and their ratings are based on a number of factors, including Comerica's 
financial strength as well as factors not entirely within its control, including conditions affecting the financial services 
industry generally. There can be no assurance that Comerica will maintain its current ratings. In February 2016, Standard 
& Poor's downgraded Comerica's long-term senior credit ratings one notch to BBB+ and Comerica Bank's long and short-
term credit ratings one notch to A- and A-2, respectively. While recent credit rating actions have had little to no detrimental 
impact  on  Comerica's  profitability,  borrowing  costs,  or  ability  to  access  the  capital  markets,  future  downgrades  to 
Comerica's or its subsidiaries' credit ratings could adversely affect Comerica's profitability, borrowing costs, or ability 
to access the capital markets or otherwise have a negative effect on Comerica's results of operations or financial condition. 
If  such  a  reduction  placed  Comerica's  or  its  subsidiaries'  credit  ratings  below  investment  grade,  it  could  also  create 
obligations  or  liabilities  under  the  terms  of  existing  arrangements  that  could  increase  Comerica's  costs  under  such 
arrangements. Additionally,  a  downgrade  of  the  credit  rating  of  any  particular  security  issued  by  Comerica  or  its 
subsidiaries could negatively affect the ability of the holders of that security to sell the securities and the prices at which 
any such securities may be sold.

• 

Damage to Comerica’s reputation could damage its businesses.

Reputational risk is an increasing concern for businesses as customers are interested in doing business with companies 
they admire and trust. Such risks include compliance issues, operational challenges, or a strategic, high profile event. 
Comerica's business is based on the trust of its customers, communities, and entire value chain, which makes managing 
reputational risk extremely important.  News or other publicity that impairs Comerica's reputation, or the reputation of 
the financial services industry generally, can therefore cause significant harm to Comerica’s business and prospects. 
Further, adverse publicity or negative information posted on social media websites regarding Comerica, whether or not 
true, may result in harm to Comerica’s prospects.

• 

Comerica may not be able to utilize technology to efficiently and effectively develop, market, and deliver new 
products and services to its customers. 

The financial services industry experiences rapid technological change with regular introductions of new technology-
driven products and services. The ability to access and use technology is an increasingly important competitive factor in 
the financial services industry, and having the right technology is a critically important component to customer satisfaction. 
As well, the efficient and effective utilization of technology enables financial institutions to reduce costs. Comerica's 
future success depends, in part, upon its ability to address the needs of its customers by using technology to market and 
deliver products and services that will satisfy customer demands, meet regulatory requirements, and create additional 
efficiencies in Comerica's operations. Comerica may not be able to effectively develop new technology-driven products 
and services or be successful in marketing or supporting these products and services to its customers, which could have 
a material adverse impact on Comerica's financial condition and results of operations.

• 

Competitive product and pricing pressures within Comerica's markets may change.

Comerica operates in a very competitive environment, which is characterized by competition from a number of other 
financial institutions in each market in which it operates. Comerica competes in terms of products and pricing with large 
national and regional financial institutions and with smaller financial institutions. Some of Comerica's larger competitors, 
including certain nationwide banks that have a significant presence in Comerica's market area, may make available to 
their customers a broader array of product, pricing and structure alternatives and, due to their asset size, may more easily 
absorb credit losses in a larger overall portfolio. Some of Comerica's competitors (larger or smaller) may have more 

17

liberal  lending  policies  and  processes.  Increasingly,  Comerica  competes  with  other  companies  based  on  financial 
technology and capabilities, such as mobile banking applications and funds transfer. 

Additionally, the financial services industry is subject to extensive regulation. For more information, see the “Supervision 
and Regulation” section of this report. Such regulations may require significant additional investments in technology, 
personnel or other resources or place limitations on the ability of financial institutions, including Comerica, to engage in 
certain activities. Comerica's competitors may be subject to a significantly different or reduced degree of regulation due 
to their asset size or types of products offered. They may also have the ability to more efficiently utilize resources to 
comply with regulations or may be able to more effectively absorb the costs of regulations into their existing cost structure. 

In addition to banks, Comerica's banking subsidiaries also face competition from other financial intermediaries, including 
savings and loan associations, consumer finance companies, leasing companies, venture capital funds, credit unions, 
investment banks, insurance companies and securities firms. Competition among providers of financial products and 
services  continues  to  increase  as  technology  advances  have  lowered  the  barriers  to  entry  for  financial  technology 
companies, with customers having the opportunity to select from a growing variety of traditional and nontraditional 
alternatives, including crowdfunding, digital wallets and money transfer services. The ability of non-banking financial 
institutions to provide services previously limited to commercial banks has intensified competition. Because non-banking 
financial institutions are not subject to many of the same regulatory restrictions as banks and bank holding companies, 
they can often operate with greater flexibility and lower cost structures. 

If Comerica is unable to compete effectively in products and pricing in its markets, business could decline, which could 
have a material adverse effect on Comerica's business, financial condition or results of operations.

• 

The soundness of other financial institutions could adversely affect Comerica.

• 

• 

Comerica's ability to engage in routine funding transactions could be adversely affected by the actions and commercial 
soundness of other financial institutions. Financial services institutions are interrelated as a result of trading, clearing, 
counterparty or other relationships. Comerica has exposure to many different industries and counterparties, and it routinely 
executes transactions with counterparties in the financial industry, including brokers and dealers, commercial banks, 
investment banks, mutual and hedge funds, and other institutional clients. As a result, defaults by, or even rumors or 
questions about, one or more financial services institutions, or the financial services industry generally, have led, and 
may further lead, to market-wide liquidity problems and could lead to losses or defaults by us or by other institutions. 
Many of these transactions could expose Comerica to credit risk in the event of default of its counterparty or client. In 
addition, Comerica's credit risk may be impacted when the collateral held by it cannot be realized or is liquidated at prices 
not sufficient to recover the full amount of the financial instrument exposure due to Comerica. There is no assurance that 
any such losses would not adversely affect, possibly materially, Comerica.

The introduction, implementation, withdrawal, success and timing of business initiatives and strategies may be 
less successful or may be different than anticipated, which could adversely affect Comerica's business.

Comerica makes certain projections and develops plans and strategies for its banking and financial products. If Comerica 
does not accurately determine demand for its banking and financial product needs, it could result in Comerica incurring 
significant expenses without the anticipated increases in revenue, which could result in a material adverse effect on its 
business.

Changes  in  customer  behavior  may  adversely  impact  Comerica's  business,  financial  condition  and  results  of 
operations.

Comerica uses a variety of financial tools, models and other methods to anticipate customer behavior as a part of its 
strategic  planning  and  to  meet  certain  regulatory  requirements.  Individual,  economic,  political,  industry-specific 
conditions and other factors outside of Comerica's control, such as fuel prices, energy costs, tariffs, real estate values or 
other factors that affect customer income levels, could alter predicted customer borrowing, repayment, investment and 
deposit practices. Such a change in these practices could materially adversely affect Comerica's ability to anticipate 
business needs and meet regulatory requirements.

Recently, there have been discussions regarding potential changes to U.S. trade policies, legislation, treaties and tariffs, 
including trade policies and tariffs affecting China, the European Union, Canada and Mexico and retaliatory tariffs by 
such countries. Tariffs and retaliatory tariffs have been imposed, and additional tariffs and retaliatory tariffs have been 
proposed. Also, on October 1, 2018, the United States, Canada and Mexico agreed to a new trade deal, the United States-
Mexico-Canada Agreement ("USMCA"), to replace the North American Free Trade Agreement. The USMCA is subject 
to congressional approval and various components of the USMCA are not effective until 2020. These and any other 
changes in tariffs, retaliatory tariffs or other trade restrictions on products and materials that Comerica’s customers import 
or export could cause the prices of their products to increase, which could reduce demand for such products, or reduce 

18

customer margins, and adversely impact their revenues, financial results and ability to service debt; in turn, this could 
adversely affect Comerica’s financial condition and results of operations.

Further,  difficult  economic  conditions  may  negatively  affect  consumer  confidence  levels. A  decrease  in  consumer 
confidence levels would likely aggravate the adverse effects of these difficult market conditions on Comerica, Comerica's 
customers and others in the financial institutions industry.

• 

Management's ability to maintain and expand customer relationships may differ from expectations.

The financial services industry is very competitive. Comerica not only vies for business opportunities with new customers, 
but also competes to maintain and expand the relationships it has with its existing customers. While management believes 
that it can continue to grow many of these relationships, Comerica will continue to experience pressures to maintain these 
relationships as its competitors attempt to capture its customers. Failure to create new customer relationships and to 
maintain and expand existing customer relationships to the extent anticipated may adversely impact Comerica's earnings.

• 

Methods of reducing risk exposures might not be effective.

Instruments, systems and strategies used to hedge or otherwise manage exposure to various types of credit, market, 
liquidity, operational, compliance, financial reporting and strategic risks could be less effective than anticipated. As a 
result, Comerica may not be able to effectively mitigate its risk exposures in particular market environments or against 
particular types of risk, which could have a material adverse impact on Comerica's business, financial condition or results 
of operations. 

For more information regarding risk management, please see "Risk Management" on pages F-21 through F-34 of the 
Financial Section of this report.

• 

Catastrophic events, including, but not limited to, hurricanes, tornadoes, earthquakes, fires, droughts and floods, 
may adversely affect the general economy, financial and capital markets, specific industries, and Comerica.

Comerica has significant operations and a significant customer base in California, Texas, Florida and other regions where 
natural and other disasters may occur. These regions are known for being vulnerable to natural disasters and other risks, 
such as tornadoes, hurricanes, earthquakes, fires, droughts and floods, the nature and severity of which may be impacted 
by climate change. These types of natural catastrophic events have at times disrupted the local economies, Comerica's 
business and customers, and have caused physical damage to Comerica's property in these regions. In addition, catastrophic 
events occurring in other regions of the world may have an impact on Comerica's customers and in turn, on Comerica. 
Comerica’s business continuity and disaster recovery plans may not be successful upon the occurrence of one of these 
scenarios,  and  a  significant  catastrophic  event  anywhere  in  the  world  could  materially  adversely  affect  Comerica's 
operating results.

• 

Tax regulations could be subject to potential legislative, administrative or judicial changes or interpretations. 

Federal income tax treatment of corporations may be clarified and/or modified by legislative, administrative or judicial 
changes or interpretations at any time. Any such changes could adversely affect Comerica, either directly, or indirectly 
as a result of effects on Comerica's customers. For example, the tax reform bill enacted on December 22, 2017 has had, 
and is expected to continue to have, far-reaching and significant effects on Comerica, its customers and the U.S. economy, 
including commercial customer borrowings due to the increase in cash flows as a result of the reduction in the corporate 
statutory tax rate. 

• 

Any future strategic acquisitions or divestitures may present certain risks to Comerica's business and operations.

Difficulties  in  capitalizing  on  the  opportunities  presented  by  a  future  acquisition  may  prevent  Comerica  from  fully 
achieving the expected benefits from the acquisition, or may cause the achievement of such expectations to take longer 
to realize than expected. 

Further, the assimilation of the acquired entity's customers and markets could result in higher than expected deposit 
attrition, loss of key employees, disruption of Comerica's businesses or the businesses of the acquired entity or otherwise 
adversely affect Comerica's ability to maintain relationships with customers and employees or achieve the anticipated 
benefits of the acquisition. These matters could have an adverse effect on Comerica for an undetermined period. Comerica 
will be subject to similar risks and difficulties in connection with any future decisions to downsize, sell or close units or 
otherwise change the business mix of Comerica.

• 

Management's ability to retain key officers and employees may change.

Comerica's future operating results depend substantially upon the continued service of its executive officers and key 
personnel. Comerica's future operating results also depend in significant part upon its ability to attract and retain qualified 
management, financial, technical, marketing, sales and support personnel. Competition for qualified personnel is intense, 

19

and Comerica cannot ensure success in attracting or retaining qualified personnel. There may be only a limited number 
of persons with the requisite skills to serve in these positions, and it may be increasingly difficult for Comerica to hire 
personnel over time. 

Further, Comerica's ability to retain key officers and employees may be impacted by legislation and regulation affecting 
the financial services industry. In 2016, the FRB, OCC and several other federal financial regulators revised and re-
proposed rules to implement Section 956 of the Dodd-Frank Act. Section 956 directed regulators to jointly prescribe 
regulations or guidelines prohibiting incentive-based payment arrangements, or any feature of any such arrangement, at 
covered financial institutions that encourage inappropriate risks by providing excessive compensation or that could lead 
to a material financial loss. Consistent with the Dodd-Frank Act, the proposed rule would impose heightened standards 
for institutions with $50 billion or more in total consolidated assets, which includes Comerica. For these larger institutions, 
the proposed rule would require the deferral of at least 40 percent of incentive-based payments for designated executives 
and significant risk-takers who individually have the ability to expose the institution to possible losses that are substantial 
in relation to the institution's size, capital or overall risk tolerance. Moreover, incentive-based compensation of these 
individuals would be subject to potential clawback for seven years following vesting. Further, the rule imposes enhanced 
risk  management  controls  and  governance  and  internal  policy  and  procedure  requirements  with  respect  to  incentive 
compensation. Accordingly, Comerica may be at a disadvantage to offer competitive compensation compared to other 
financial  institutions  (as  referenced  above)  or  companies  in  other  industries,  which  may  not  be  subject  to  the  same 
requirements. 

Comerica's business, financial condition or results of operations could be materially adversely affected by the loss of any 
of its key employees, or Comerica's inability to attract and retain skilled employees.

• 

Legal and regulatory proceedings and related matters with respect to the financial services industry, including 
those directly involving Comerica and its subsidiaries, could adversely affect Comerica or the financial services 
industry in general.

Comerica has been, and may in the future be, subject to various legal and regulatory proceedings. It is inherently difficult 
to assess the outcome of these matters, and there can be no assurance that Comerica will prevail in any proceeding or 
litigation. Any such matter could result in substantial cost and diversion of Comerica's efforts, which by itself could have 
a material adverse effect on Comerica's financial condition and operating results. Further, adverse determinations in such 
matters could result in fines or actions by Comerica's regulators that could materially adversely affect Comerica's business, 
financial condition or results of operations.

Comerica establishes reserves for legal claims when payments associated with the claims become probable and the costs 
can be reasonably estimated. Comerica may still incur legal costs for a matter even if it has not established a reserve. In 
addition, due to the inherent subjectivity of the assessments and unpredictability of the outcome of legal proceedings, 
the actual cost of resolving a legal claim may be substantially higher than any amounts reserved for that matter. The 
ultimate resolution of a pending legal proceeding, depending on the remedy sought and granted, could adversely affect 
Comerica's results of operations and financial condition.

• 

Comerica may incur losses due to fraud.

Fraudulent activity can take many forms and has escalated as more tools for accessing financial services emerge, such 
as real-time payments. Fraud schemes are broad and continuously evolving.  Examples include but are not limited to:  
debit card/credit card fraud, check fraud, mechanical devices attached to ATM machines, social engineering and phishing 
attacks to obtain personal information, impersonation of our clients through the use of falsified or stolen credentials, 
employee  fraud,  information  theft  and  other  malfeasance.  Increased  deployment  of  technologies,  such  as  chip  card 
technology,  defray  and  reduce  aspects  of  fraud;  however,  criminals  are  turning  to  other  sources  to  steal  personally 
identifiable information in order to impersonate the consumer to commit fraud. Many of these data compromises have 
been widely reported in the media. Further, as a result of the increased sophistication of fraud activity, Comerica continues 
to invest in systems, resources, and controls to detect and prevent fraud. This will result in continued ongoing investments 
in the future.

• 

Terrorist activities or other hostilities may adversely affect the general economy, financial and capital markets, 
specific industries, and Comerica.

Terrorist attacks or other hostilities may disrupt Comerica's operations or those of its customers. In addition, these events 
have had and may continue to have an adverse impact on the U.S. and world economy in general and consumer confidence 
and spending in particular, which could harm Comerica's operations. Any of these events could increase volatility in the 
U.S. and world financial markets, which could harm Comerica's stock price and may limit the capital resources available 
to Comerica and its customers. This could have a material adverse impact on Comerica's operating results, revenues and 
costs and may result in increased volatility in the market price of Comerica's common stock.

20

• 

Changes in accounting standards could materially impact Comerica's financial statements. 

From time to time accounting standards setters change the financial accounting and reporting standards that govern the 
preparation of Comerica’s financial statements. These changes can be difficult to predict and can materially impact how 
Comerica records and reports its financial condition and results of operations. In some cases, Comerica could be required 
to  apply  a  new  or  revised  standard  retroactively,  resulting  in  changes  to  previously  reported  financial  results,  or  a 
cumulative charge to retained earnings. In particular, the Financial Accounting Standards Board (“FASB”) has issued a 
new accounting standard, CECL, for the recognition and measurement of credit losses for loans and debt securities. The 
new standard will be effective for Comerica in the first quarter 2020. The anticipated change in loan loss reserves due to 
CECL is currently unknown and is dependent upon many factors that are yet to be determined, such as the economic 
environment at adoption and any future FASB clarifications. Comerica anticipates that CECL will have an impact on its 
loan loss reserves and retained earnings, as well as how it manages its capital.

• 

Comerica's accounting policies and processes are critical to the reporting of financial condition and results of 
operations. They require management to make estimates about matters that are uncertain. 

Accounting policies and processes are fundamental to how Comerica records and reports its financial condition and 
results of operations. Management must exercise judgment in selecting and applying many of these accounting policies 
and processes so they comply with U.S. Generally Accepted Accounting Principles ("GAAP"). In some cases, management 
must select the accounting policy or method to apply from two or more alternatives, any of which may be reasonable 
under the circumstances, yet may result in the Company reporting materially different results than would have been 
reported under a different alternative.

Management has identified certain accounting policies as being critical because they require management's judgment to 
make difficult, subjective or complex judgments about matters that are uncertain. Materially different amounts could be 
reported under different conditions or using different assumptions or estimates. Comerica has established detailed policies 
and control procedures that are intended to ensure these critical accounting estimates and judgments are well controlled 
and applied consistently. In addition, the policies and procedures are intended to ensure that the process for changing 
methodologies occurs in an appropriate manner. Because of the uncertainty surrounding management's judgments and 
the estimates pertaining to these matters, Comerica cannot guarantee that it will not be required to adjust accounting 
policies or restate prior period financial statements. See “Critical Accounting Policies” on pages F-35 through F-37 of 
the Financial Section of this report and Note 1 of the Notes to Consolidated Financial Statements located on pages F-46 
through F-58 of the Financial Section of this report. 

• 

Controls and procedures may not prevent or detect all errors or acts of fraud.

Controls and procedures are designed to provide reasonable assurance that information required to be disclosed in reports 
Comerica files or submits under the Exchange Act is accurately accumulated and communicated to management, and 
recorded, processed, summarized, and reported within the time periods specified in the SEC's rules and forms. Disclosure 
controls and procedures or internal controls and procedures, no matter how well conceived and operated, can provide 
only reasonable, not absolute, assurance that the objectives of the control system are met, due to certain inherent limitations. 
These limitations include the realities that judgments in decision making can be faulty, that alternative reasoned judgments 
can be drawn, that breakdowns can occur because of an error or mistake, or that controls may be fraudulently circumvented. 
Accordingly, because of the inherent limitations in control systems, misstatements due to error or fraud may occur and 
not be detected.

• 

Comerica's stock price can be volatile.

Stock price volatility may make it more difficult for shareholders to resell their common stock when they want and at 
prices they find attractive. Comerica's stock price can fluctuate significantly in response to a variety of factors including, 
among other things:

•  Actual or anticipated variations in quarterly results of operations.
•  Recommendations or projections by securities analysts.
•  Operating and stock price performance of other companies that investors deem comparable to Comerica.
•  News reports relating to trends, concerns and other issues in the financial services industry.
• 
•  New technology used, or services offered, by competitors.
• 

Significant acquisitions or business combinations, strategic partnerships, joint ventures or capital 
commitments by or involving Comerica or its competitors.

Perceptions in the marketplace regarding Comerica and/or its competitors.

•  Changes in dividends and capital returns.
•  Changes in government regulations.
•  Cyclical fluctuations.

21

•  Geopolitical conditions such as acts or threats of terrorism or military conflicts.
•  Activity by short sellers and changing government restrictions on such activity.

General market fluctuations, including real or anticipated changes in the strength of the economy; industry factors and 
general economic and political conditions and events, such as economic slowdowns or recessions; interest rate changes, 
oil price volatility or credit loss trends, among other factors, could also cause Comerica's stock price to decrease regardless 
of operating results.

For the above and other reasons, the market price of Comerica's securities may not accurately reflect the underlying value 
of the securities, and investors should consider this before relying on the market prices of Comerica's securities when 
making an investment decision.

Item 1B.  Unresolved Staff Comments.

None.

Item 2.  Properties.

The executive offices of Comerica are located in the Comerica Bank Tower, 1717 Main Street, Dallas, Texas 75201. 
Comerica Bank occupies six floors of the building, plus additional space on the building's lower level. Comerica does not own 
the Comerica Bank Tower space, but has naming rights to the building and leases the space from an unaffiliated third party. The 
lease for such space used by Comerica and its subsidiaries extends through September 2028. Comerica's Michigan headquarters 
are located in a 10-story building in the central business district of Detroit, Michigan at 411 W. Lafayette, Detroit, Michigan 48226. 
Such building is owned by Comerica Bank. As of December 31, 2018, Comerica, through its banking affiliates, operated at a total 
of 550 locations. This includes banking centers, trust services locations, and/or loan production or other financial services offices, 
primarily in the States of Texas, Michigan, California, Florida and Arizona. Of the 550 locations, 221 were owned and 329 were 
leased. As of December 31, 2018, affiliates also operated from leased spaces in Denver, Colorado; Wilmington, Delaware; Oakbrook 
Terrace, Illinois; Boston, Massachusetts; Minneapolis, Minnesota; Morristown, New Jersey; New York, New York; Rocky Mount, 
North Carolina; Memphis, Tennessee; McLean, Virginia; Bellevue, Washington; Monterrey, Mexico; Toronto, Ontario, Canada 
and Windsor, Ontario, Canada. Comerica and its subsidiaries own, among other properties, a check processing center in Livonia, 
Michigan, and three buildings in Auburn Hills, Michigan, used mainly for lending functions and operations.

Item 3.  Legal Proceedings. 

Please see Note 21 of the Notes to Consolidated Financial Statements located on pages F-93 through F-94 of the Financial 

Section of this report.

Item 4.   Mine Safety Disclosures.

Not applicable.

22

 
PART II

Item 5.  Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.

Market Information, Holders of Common Stock and Dividends

The common stock of Comerica Incorporated is traded on the New York Stock Exchange (NYSE Trading Symbol: CMA). 

At February 8, 2019, there were approximately 8,844 record holders of Comerica's common stock.  

On January 22, 2019, Comerica’s Board of Directors approved a dividend of $0.67 per common share payable on April 
1, 2019 to shareholders of record on March 15, 2019. Subject to approval of the Board of Directors and applicable regulatory 
requirements, Comerica expects to continue its policy of paying regular cash dividends on a quarterly basis. A discussion of 
Comerica's dividend restrictions is set forth in Note 20 of the Notes to Consolidated Financial Statements located on pages F-92 
through F-93 of the Financial Section of this report, in the "Capital" section on pages F-18 through F-20 of the Financial Section 
of this report and in the “Supervision and Regulation” section of this report.

Performance Graph

Our performance graph is available under the caption "Performance Graph" on page F-2 of the Financial Section of this 

report.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

Authorization to repurchase up to an additional 10 million shares of Comerica Incorporated outstanding common stock 
was announced by the Board on July 24, 2018. As of December 31, 2018, a total of 65.2 million shares have been authorized for 
repurchase under the equity repurchase program since its inception in 2010. There is no expiration date for Comerica's equity 
repurchase program.  

Previously, Comerica's equity repurchase program also covered the repurchase of up to 14.1 million warrants (12.1 million

share-equivalents). All unexercised warrants expired according to their terms in the quarter ended December 31, 2018.

In January 2019, the Board also authorized the repurchase of up to 15 million additional shares of Comerica Incorporated 

outstanding common stock. 

The following table summarizes Comerica's equity repurchase activity for the year ended December 31, 2018.

(shares in thousands)
Total first quarter 2018
Total second quarter 2018
Total third quarter 2018
October 2018
November 2018
December 2018
Total fourth quarter 2018

Total 2018

Total Number of Shares 
and Warrants Purchased 
as Part of Publicly 
Announced Repurchase 
Plans or Programs (a)

Remaining
Repurchase
Authorization 
(b)

Total Number
of Shares
Purchased (c)

Average 
Price
Paid Per 
Share

1,565
1,755
5,137
4,701
—
1,615
6,316
14,773

8,714
6,952
11,706 (d)
6,987
6,346
4,707
4,707
4,707

1,674
1,759
5,143
4,703
—
1,615
6,318
14,894

$

$

95.16
96.32
97.32
79.17
—
79.16
79.16
89.26

(a)  The Corporation made no repurchases of warrants under the repurchase program during the year ended December 31, 2018. Upon exercise 
of a warrant, the number of shares with a value equal to the aggregate exercise price is withheld from an exercising warrant holder as 
payment (known as a "net exercise provision"). During the year ended December 31, 2018, the Corporation withheld the equivalent of 
approximately 309,000 shares to cover an aggregate of $9 million in exercise price and issued approximately 585,000 shares to the exercising 
warrant holders. Shares withheld in connection with the net exercise provision are not included in the total number of shares or warrants 
purchased in the above table. All unexercised warrants expired in the fourth quarter.

(b)  Maximum number of shares and warrants that may yet be purchased under the publicly announced plans or programs. In January 2019,

the Board rescinded its warrant repurchase authorization following the expiration of all unexercised warrants.

(c)  Includes approximately 121,000 shares (including 2,000 shares in the quarter ended December 31, 2018) purchased pursuant to deferred 
compensation plans and shares purchased from employees to pay for taxes related to restricted stock vesting under the terms of an employee 
share-based compensation plan during the year ended December 31, 2018. These transactions are not considered part of the Corporation's 
repurchase program.

(d)  Includes July 24, 2018 equity repurchase authorization for an additional 10 million shares.

Item 6.  Selected Financial Data.

Reference is made to the caption “Selected Financial Data” on page F-3 of the Financial Section of this report. 

23

 
Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Reference is made to the sections entitled “2018 Overview and 2019 Outlook,” “Results of Operations," "Strategic Lines 
of Business," "Balance Sheet and Capital Funds Analysis," "Risk Management," "Critical Accounting Policies," "Supplemental 
Financial Data" and "Forward-Looking Statements" on pages F-4 through F-40 of the Financial Section of this report.

Item 7A.  Quantitative and Qualitative Disclosures About Market Risk.

Reference is made to the subheadings entitled “Market and Liquidity Risk,” “Operational Risk,” “Compliance Risk” and 

“Strategic Risk” on pages F-29 through F-34 of the Financial Section of this report.

Item 8.  Financial Statements and Supplementary Data.

Reference  is  made  to  the  sections  entitled  “Consolidated  Balance  Sheets,”  “Consolidated  Statements  of  Income,” 
“Consolidated  Statements  of  Comprehensive  Income,”  “Consolidated  Statements  of  Changes  in  Shareholders'  Equity,” 
“Consolidated Statements of Cash Flows,” “Notes to Consolidated Financial Statements,” “Report of Management,” “Reports of 
Independent Registered Public Accounting Firm,” and “Historical Review” on pages F-41 through F-109 of the Financial Section 
of this report. 

Item 9.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

None.

Item 9A.  Controls and Procedures.

Disclosure Controls and Procedures

As required by Rule 13a-15(b) of the Exchange Act, management, including the Chief Executive Officer and Chief 
Financial  Officer,  conducted  an  evaluation  as  of  the  end  of  the  period  covered  by  this Annual  Report  on  Form 10-K,  of  the 
effectiveness of our disclosure controls and procedures as defined in Exchange Act Rule 13a-15(e). Based on that evaluation, the 
Chief Executive Officer and Chief Financial Officer concluded that Comerica's disclosure controls and procedures were effective 
as of the end of the period covered by this Annual Report on Form 10-K.

Internal Control over Financial Reporting

Management's annual report on internal control over financial reporting and the related attestation report of Comerica's 

registered public accounting firm are included on pages F-104 and F-105 in the Financial Section of this report. 

As required by Rule 13a-15(d) of the Exchange Act, management, including the Chief Executive Officer and Chief 
Financial Officer, conducted an evaluation of our internal control over financial reporting to determine whether any changes 
occurred during the last quarter of the fiscal year covered by this Annual Report on Form 10-K that have materially affected, or 
are reasonably likely to materially affect, Comerica's internal control over financial reporting. Based on that evaluation, the Chief 
Executive Officer and Chief Financial Officer concluded that there has been no such change during the last quarter of the fiscal 
year covered by this Annual Report on Form 10-K that has materially affected, or is reasonably likely to materially affect, Comerica's 
internal control over financial reporting.

Item 9B.  Other Information.

None.

PART III

Item 10.  Directors, Executive Officers and Corporate Governance.

Comerica has a Senior Financial Officer Code of Ethics that applies to the Chief Executive Officer, the Chief Financial 
Officer, the Chief Accounting Officer and the Treasurer. The Senior Financial Officer Code of Ethics is available on Comerica's 
website at www.comerica.com. If any substantive amendments are made to the Senior Financial Officer Code of Ethics or if 
Comerica grants any waiver, including any implicit waiver, from a provision of the Senior Financial Officer Code of Ethics to the 
Chief Executive Officer, the Chief Financial Officer, the Chief Accounting Officer or the Treasurer, we will disclose the nature of 
such amendment or waiver on our website.

The remainder of the response to this item will be included under the sections captioned “Information About Nominees,” 
“Committees and Meetings of Directors,” “Executive Officers” and “Section 16(a) Beneficial Ownership Reporting Compliance” 
of Comerica's definitive Proxy Statement relating to the Annual Meeting of Shareholders to be held on April 23, 2019, which 
sections are hereby incorporated by reference.

24

 
Item 11.  Executive Compensation.

The response to this item will be included under the sections captioned “Compensation Committee Interlocks and Insider 
Participation,”  “Compensation  Discussion  and  Analysis,”  “Compensation  of  Directors,”  “Governance,  Compensation  and 
Nominating  Committee  Report,”  “2018 Summary  Compensation Table,”  “2018 Grants  of  Plan-Based Awards,”  “Outstanding 
Equity Awards at Fiscal Year-End 2018,” “2018 Option Exercises and Stock Vested,” “Pension Benefits at Fiscal Year-End 2018,” 
“2018 Nonqualified  Deferred  Compensation,”  “Potential  Payments  upon  Termination  or  Change  of  Control at  Fiscal  Year-
End 2018” and "Pay Ratio Disclosure" of Comerica's definitive Proxy Statement relating to the Annual Meeting of Shareholders 
to be held on April 23, 2019, which sections are hereby incorporated by reference.

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The  response  to  this  item  will  be  included  under  the  sections  captioned  “Security  Ownership  of  Certain  Beneficial 
Owners,” “Security Ownership of Management” and "Securities Authorized for Issuance Under Equity Compensation Plans" of 
Comerica's definitive Proxy Statement relating to the Annual Meeting of Shareholders to be held on April 23, 2019, which sections 
are hereby incorporated by reference.

Item 13.  Certain Relationships and Related Transactions, and Director Independence.

The response to this item will be included under the sections captioned “Director Independence,” “Transactions with 
Related Persons,” and “Information about Nominees” of Comerica's definitive Proxy Statement relating to the Annual Meeting 
of Shareholders to be held on April 23, 2019, which sections are hereby incorporated by reference.

Item 14.  Principal Accountant Fees and Services.

The response to this item will be included under the section captioned “Independent Registered Public Accounting Firm” 
of Comerica's definitive Proxy Statement relating to the Annual Meeting of Shareholders to be held on April 23, 2019, which 
section is hereby incorporated by reference.

25

PART IV

Item 15.  Exhibits and Financial Statement Schedules

The following documents are filed as a part of this report:

1.

2.

3.

3.1

3.2

3.3

4

9

10.1†

10.1A†

10.1B†

10.1C†

10.1D†

10.1E†

10.1F†

10.1G†

10.2†

10.2A†

Financial Statements: The financial statements that are filed as part of this report are included in the Financial Section 
on pages F-41 through F-106.

All of the schedules for which provision is made in the applicable accounting regulations of the SEC are either not 
required under the related instruction, the required information is contained elsewhere in the Form 10-K, or the 
schedules are inapplicable and therefore have been omitted.

Exhibits: 

Restated Certificate of Incorporation of Comerica Incorporated (filed as Exhibit 3.2 to Registrant's Current Report 
on Form 8-K dated August 4, 2010, and incorporated herein by reference).

Certificate of Amendment to Restated Certificate of Incorporation of Comerica Incorporated (filed as Exhibit 3.2 
to Registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2011, and incorporated herein by 
reference).

Amended and Restated Bylaws of Comerica Incorporated (filed as Exhibit 3.3 to Registrant's Quarterly Report on 
Form 10-Q for the quarter ended March 31, 2011, and incorporated herein by reference).

[Reference is made to Exhibits 3.1, 3.2 and 3.3 in respect of instruments defining the rights of security holders. In 
accordance with Regulation S-K Item No. 601(b)(4)(iii), the Registrant is not filing copies of instruments defining 
the rights of holders of long-term debt because none of those instruments authorizes debt in excess of 10% of the 
total assets of the Registrant and its subsidiaries on a consolidated basis. The Registrant hereby agrees to furnish a 
copy of any such instrument to the SEC upon request.]

(not applicable)

Comerica Incorporated 2018 Long-Term Incentive Plan (filed as Exhibit 10.1 to Registrant's Current Report on 
Form 8-K dated April 24, 2018, and incorporated herein by reference).

Form  of  Standard  Comerica  Incorporated  Restricted  Stock  Unit Agreement  (cliff  vesting)  under  the  Comerica 
Incorporated 2018 Long-Term Incentive Plan (filed as Exhibit 10.2 to Registrant's Current Report on Form 8-K 
dated April 24, 2018, and incorporated herein by reference).

Form of Standard Comerica Incorporated Restricted Stock Unit Agreement (non-cliff vesting) under the Comerica 
Incorporated 2018 Long-Term Incentive Plan (filed as Exhibit 10.3 to Registrant's Current Report on Form 8-K 
dated April 24, 2018, and incorporated herein by reference).

Form of Standard Comerica Incorporated Non-Qualified Stock Option Agreement under the Comerica Incorporated 
2018 Long-Term Incentive Plan (filed as Exhibit 10.4 to Registrant's Current Report on Form 8-K dated April 24, 
2018, and incorporated herein by reference).

Form of Standard Comerica Incorporated Senior Executive Long-Term Performance Restricted Stock Unit Award 
Agreement under the Comerica Incorporated 2018 Long-Term Incentive Plan (filed as Exhibit 10.5 to Registrant's 
Current Report on Form 8-K dated April 24, 2018, and incorporated herein by reference).

Form  of  Standard  Comerica  Incorporated  Restricted  Stock  Agreement  (cliff  vesting)  under  the  Comerica 
Incorporated 2018 Long-Term Incentive Plan (filed as Exhibit 10.6 to Registrant's Current Report on Form 8-K 
dated April 24, 2018, and incorporated herein by reference).

Form  of  Standard  Comerica  Incorporated  Restricted  Stock Agreement  (non-cliff  vesting)  under  the  Comerica 
Incorporated 2018 Long-Term Incentive Plan (filed as Exhibit 10.7 to Registrant's Current Report on Form 8-K 
dated April 24, 2018, and incorporated herein by reference).

Form of Standard Comerica Incorporated Senior Executive Long-Term Performance Restricted Stock Unit Award 
Agreement under the Comerica Incorporated 2018 Long-Term Incentive Plan (2019 version).

Comerica Incorporated 2006 Amended and Restated Long-Term Incentive Plan (filed as Exhibit 10.1 to Registrant's 
Annual Report on Form 10-K for the year ended December 31, 2016, and incorporated herein by reference).

Form of Standard Comerica Incorporated Non-Qualified Stock Option Agreement under the Comerica Incorporated 
Amended and Restated 2006 Long-Term Incentive Plan (filed as Exhibit 10.7 to Registrant's Annual Report on 
Form 10-K for the year ended December 31, 2006, and incorporated herein by reference).

26

 
10.2B†

10.2C†

10.2D†

10.2E†

10.2F†

10.2G†

10.2H†

10.2I†

10.2J†

10.2K†

10.2L†

10.2M†

10.2N†

10.2O†

10.2P†

10.2Q†

Form of Standard Comerica Incorporated Non-Qualified Stock Option Agreement under the Comerica Incorporated 
Amended and Restated 2006 Long-Term Incentive Plan (2011 version) (filed as Exhibit 10.44 to Registrant's Annual 
Report on Form 10-K for the year ended December 31, 2010, and incorporated herein by reference).

Form of Standard Comerica Incorporated Non-Qualified Stock Option Agreement under the Comerica Incorporated 
Amended and Restated 2006 Long-Term Incentive Plan (2012 version) (filed as Exhibit 10.1C to Registrant's Annual 
Report on Form 10-K for the year ended December 31, 2011, and incorporated herein by reference).

Form of Standard Comerica Incorporated Non-Qualified Stock Option Agreement under the Comerica Incorporated 
Amended and Restated 2006 Long-Term Incentive Plan (2014 version) (filed as Exhibit 10.1 to Registrant's Current 
Report on Form 8-K dated January 21, 2014, and incorporated herein by reference).

Form of Standard Comerica Incorporated Non-Qualified Stock Option Agreement under the Comerica Incorporated 
Amended and Restated 2006 Long-Term Incentive Plan (2014 version 2) (filed as Exhibit 10.1 to Registrant's Current 
Report on Form 8-K dated July 22, 2014, and incorporated herein by reference).

Form of Standard Comerica Incorporated Non-Qualified Stock Option Agreement under the Comerica Incorporated 
Amended and Restated 2006 Long-Term Incentive Plan (2015 version) (filed as Exhibit 10.2 to Registrant's Current 
Report on Form 8-K dated November 10, 2015, and incorporated herein by reference).

Form of Standard Comerica Incorporated Non-Qualified Stock Option Agreement under the Comerica Incorporated 
Amended and Restated 2006 Long-Term Incentive Plan (2017 version) (filed as Exhibit 10.1G to Registrant's Annual 
Report on Form 10-K for the year ended December 31, 2016, and incorporated herein by reference).

Form of Standard Comerica Incorporated Restricted Stock Award Agreement (non-cliff vesting) under the Amended 
and  Restated  Comerica  Incorporated  2006  Long-Term  Incentive  Plan  (2012  version)  (filed  as  Exhibit  10.1F  to 
Registrant's Annual  Report  on  Form  10-K  for  the  year  ended  December  31,  2011,  and  incorporated  herein  by 
reference).

Form of Standard Comerica Incorporated Restricted Stock Award Agreement (non-cliff vesting) under the Amended 
and  Restated  Comerica  Incorporated  2006  Long-Term  Incentive  Plan  (2014  version)  (filed  as  Exhibit  10.2  to 
Registrant's Current Report on Form 8-K dated January 21, 2014, and incorporated herein by reference).

Form of Standard Comerica Incorporated Restricted Stock Award Agreement (non-cliff vesting) under the Amended 
and Restated Comerica Incorporated 2006 Long-Term Incentive Plan (2014 version 2) (filed as Exhibit 10.2 to 
Registrant's Current Report on Form 8-K dated July 22, 2014, and incorporated herein by reference).

Form of Standard Comerica Incorporated Restricted Stock Award Agreement (non-cliff vesting) under the Amended 
and Restated Comerica Incorporated 2006 Long-Term Incentive Plan (2017 version) (filed as Exhibit 10.1M to 
Registrant's Annual  Report  on  Form 10-K  for  the  year  ended  December 31,  2016,  and  incorporated  herein  by 
reference).

Form of Standard Comerica Incorporated Restricted Stock Award Agreement (cliff vesting) under the Comerica 
Incorporated  2006 Amended  and  Restated  Long-Term  Incentive  Plan  (2012  version)  (filed  as  Exhibit  10.1I  to 
Registrant's Annual  Report  on  Form  10-K  for  the  year  ended  December  31,  2011,  and  incorporated  herein  by 
reference).

Form of Standard Comerica Incorporated Restricted Stock Award Agreement (cliff vesting) under the Comerica 
Incorporated  2006 Amended  and  Restated  Long-Term  Incentive  Plan  (2017  version)  (filed  as  Exhibit 10.1Q  to 
Registrant's Annual  Report  on  Form 10-K  for  the  year  ended  December 31,  2016,  and  incorporated  herein  by 
reference).

Form  of  Standard  Comerica  Incorporated  Restricted  Stock  Unit Agreement  under  the Amended  and  Restated 
Comerica Incorporated 2006 Long-Term Incentive Plan (2011 version) (filed as Exhibit 10.47 to Registrant's Annual 
Report on Form 10-K for the year ended December 31, 2010, and incorporated herein by reference).

Form of Standard Comerica Incorporated Restricted Stock Unit Award Agreement under the Amended and Restated 
Comerica Incorporated 2006 Long-Term Incentive Plan (2018 version - non-cliff vesting) (filed as Exhibit 10.2 to 
Registrant's Current Report on Form 8-K dated November 8, 2017, and incorporated herein by reference).

Form of Standard Comerica Incorporated Restricted Stock Unit Award Agreement under the Amended and Restated 
Comerica  Incorporated  2006  Long-Term  Incentive  Plan  (2018  version  -  cliff  vesting)  (filed  as  Exhibit  10.3  to 
Registrant's Current Report on Form 8-K dated November 8, 2017, and incorporated herein by reference).

Form of Standard Comerica Incorporated Senior Executive Long-Term Performance Restricted Stock Unit Award 
Agreement under the Amended and Restated Comerica Incorporated 2006 Long-Term Incentive Plan (filed as Exhibit 
10.3 to Registrant's Current Report on Form 8-K dated January 21, 2014, and incorporated herein by reference).

27

10.2R†

10.2S†

10.2T†

10.2U†

10.3†

10.4†

10.5†

10.6†

10.7†

10.8†

10.9†

10.10†

10.11†

10.12†

10.13†

10.13A†

Form of Standard Comerica Incorporated Senior Executive Long-Term Performance Restricted Stock Unit Award 
Agreement under the Amended and Restated Comerica Incorporated 2006 Long-Term Incentive Plan (2014 version 
2) (filed as Exhibit 10.3 to Registrant's Current Report on Form 8-K dated July 22, 2014, and incorporated herein 
by reference).

Form of Standard Comerica Incorporated Senior Executive Long-Term Performance Restricted Stock Unit Award 
Agreement under the Amended and Restated Comerica Incorporated 2006 Long-Term Incentive Plan (2015 version) 
(filed as Exhibit 10.1 to Registrant's Current Report on Form 8-K dated November 10, 2015, and incorporated herein 
by reference).

Form of Standard Comerica Incorporated Senior Executive Long-Term Performance Restricted Stock Unit Award 
Agreement under the Amended and Restated Comerica Incorporated 2006 Long-Term Incentive Plan (2017 version) 
(filed as Exhibit 10.1 to Registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2017, and 
incorporated herein by reference). 

Form of Standard Comerica Incorporated Senior Executive Long-Term Performance Restricted Stock Unit Award 
Agreement under the Amended and Restated Comerica Incorporated 2006 Long-Term Incentive Plan (2018 version) 
(filed as Exhibit 10.1Y to Registrant's Annual Report on Form 10-K for the year ended December 31, 2017, and 
incorporated herein by reference).

Amended and Restated Sterling Bancshares, Inc. 2003 Stock Incentive and Compensation Plan effective April 30, 
2007 (filed as Exhibit 10.1 to Sterling Bancshares, Inc.'s Current Report on Form 8-K dated August 14, 2007 (File 
No. 000-20750), and incorporated herein by reference).

Comerica Incorporated Amended and Restated Employee Stock Purchase Plan (amended and restated October 22, 
2013) (filed as Exhibit 10.5 to Registrant's Annual Report on Form 10-K for the year ended December 31, 2013, 
and incorporated herein by reference).

Comerica Incorporated 2016 Management Incentive Plan (filed as Exhibit 10.1 to Registrant's Current Report on 
Form 8-K dated May 2, 2016, and incorporated herein by reference).

Form  of  Standard  Comerica  Incorporated  No  Sale Agreement  under  the  Comerica  Incorporated Amended  and 
Restated Management Incentive Plan (filed as Exhibit 10.5 to Registrant's Quarterly Report on Form 10-Q for the 
quarter ended September 30, 2004, and incorporated herein by reference).

Supplemental Retirement Income Account Plan (formerly known as the Amended and Restated Benefit Equalization 
Plan for Employees of Comerica Incorporated) (amended and restated October 13, 2016, with amendments effective 
January 1, 2017) (filed as Exhibit 10.1 to Registrant's Current Report on Form 8-K dated January 24, 2017, and 
incorporated herein by reference). 

1999 Comerica Incorporated Amended and Restated Deferred Compensation Plan (amended and restated on July 
26, 2011) (filed as Exhibit 10.1 to Registrant's Current Report on Form 8-K dated July 26, 2011, and incorporated 
herein by reference).

1999 Comerica Incorporated Amended and Restated Common Stock Deferred Incentive Award Plan (amended and 
restated on July 26, 2011) (filed as Exhibit 10.2 to Registrant's Current Report on Form 8-K dated July 26, 2011, 
and incorporated herein by reference).

Sterling Bancshares, Inc. Deferred Compensation Plan (as Amended and Restated) (filed as Exhibit 4.4 to Registrant's 
Registration Statement on Form S-8 dated July 28, 2011 (Registration No. 333-175857) and incorporated herein by 
reference). 

Amended and Restated Comerica Incorporated Non-Employee Director Fee Deferral Plan (amended and restated 
on January 27, 2015) (filed as Exhibit 10.13 to Registrant's Annual Report on Form 10-K for the year ended December 
31, 2014, and incorporated herein by reference).

Amended and Restated Comerica Incorporated Common Stock Non-Employee Director Fee Deferral Plan (amended 
and restated on January 27, 2015) (filed as Exhibit 10.14 to Registrant's Annual Report on Form 10-K for the year 
ended December 31, 2014, and incorporated herein by reference).

Comerica Incorporated Amended and Restated Incentive Plan for Non-Employee Directors (amended and restated 
effective May 15, 2014) (filed as Exhibit 10.3 to Registrant's Quarterly Report on Form 10-Q for the quarter ended 
March 31, 2015, and incorporated herein by reference).

Form  of  Standard  Comerica  Incorporated  Non-Employee  Director  Restricted  Stock  Unit Agreement  under  the 
Comerica Incorporated Amended and Restated Incentive Plan for Non-Employee Directors (filed as Exhibit 10.2 
to Registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2005, and incorporated herein by 
reference).

28

10.13B†

10.13C†

10.13D†

10.13E†

10.14†

10.14A†

10.15†

10.16†

10.17†

10.18A†

10.18B†

10.18C†

10.18D†

10.19†

10.19A†

10.20†

10.20A†

10.21†

Form  of  Standard  Comerica  Incorporated  Non-Employee  Director  Restricted  Stock  Unit Agreement  under  the 
Comerica Incorporated Amended and Restated Incentive Plan for Non-Employee Directors (Version 2) (filed as 
Exhibit 10.6 to Registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2006, and incorporated 
herein by reference).

Form  of  Standard  Comerica  Incorporated  Non-Employee  Director  Restricted  Stock  Unit Agreement  under  the 
Comerica Incorporated Amended and Restated Incentive Plan for Non-Employee Directors (Version 2.5) (filed as 
Exhibit 10.48 to Registrant's Annual Report on Form 10-K for the year ended December 31, 2010, and incorporated 
herein by reference).

Form  of  Standard  Comerica  Incorporated  Non-Employee  Director  Restricted  Stock  Unit Agreement  under  the 
Comerica Incorporated Amended and Restated Incentive Plan for Non-Employee Directors (Version 3) (filed as 
Exhibit 10.1 to Registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2009, and incorporated 
herein by reference).

Form  of  Standard  Comerica  Incorporated  Non-Employee  Director  Restricted  Stock  Unit Agreement  under  the 
Comerica Incorporated Amended and Restated Incentive Plan for Non-Employee Directors (Version 4) (filed as 
Exhibit 10.4 to Registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2011, and incorporated 
herein by reference).

2015  Comerica  Incorporated  Incentive  Plan  for  Non-Employee  Directors  (filed  as  Exhibit  10.4  to  Registrant's 
Quarterly Report on Form 10-Q for the quarter ended March 31, 2015, and incorporated herein by reference). 

Form of Standard Comerica Incorporated Non-Employee Director Restricted Stock Unit Agreement under the 2015 
Comerica Incorporated Incentive Plan for Non-Employee Directors (filed as Exhibit 10.1 to Registrant's Quarterly 
Report on Form 10-Q for the quarter ended September 30, 2015, and incorporated herein by reference).

Form of Indemnification Agreement between Comerica Incorporated and certain of its directors and officers (filed 
as Exhibit 10.6 to Registrant's Annual Report on Form 10-K for the year ended December 31, 2002, and incorporated 
herein by reference).

Supplemental Benefit Agreement with Eugene A. Miller (filed as Exhibit 10.1 to Registrant's Quarterly Report on 
Form 10-Q for the quarter ended September 30, 2002, and incorporated herein by reference).

Supplemental Pension and Retiree Medical Agreement with Ralph W. Babb Jr. (filed as Exhibit 10.2 to Registrant's 
Quarterly Report on Form 10-Q for the quarter ended June 30, 1998, and incorporated herein by reference).

Restrictive Covenants and General Release Agreement by and between Jon W. Bilstrom and Comerica Incorporated 
dated July 21, 2016 (filed as Exhibit 10.1 to Registrant's Current Report on Form 8-K dated July 27, 2016, and 
incorporated herein by reference).

Restrictive Covenants and General Release Agreement by and between J. Patrick Faubion and Comerica Incorporated 
dated December 11, 2016 (filed as Exhibit 10.19C to Registrant's Annual Report on Form 10-K for the year ended 
December 31, 2016, and incorporated herein by reference).

Restrictive Covenants and General Release Agreement by and between David E. Duprey and Comerica Incorporated 
dated February 5, 2018 (filed as Exhibit 10.1 to Registrant's Current Report on Form 8-K dated February 8, 2018, 
and incorporated herein by reference).

Restrictive  Covenants  and  General  Release  Agreement  by  and  between  Michael  H.  Michalak  and  Comerica 
Incorporated dated January 8, 2019 (filed as Exhibit 10.1 to Registrant's Current Report on Form 8-K dated January 
11, 2019, and incorporated herein by reference).

Form of Change of Control Employment Agreement (BE4 and Higher Version without gross-up or window period-
current) (filed as Exhibit 10.10 to Registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2018, 
and incorporated herein by reference).

Schedule of Named Executive Officers Party to Change of Control Employment Agreement (BE4 and Higher 
Version without gross-up or window period-current).

Form  of  Change  of  Control  Employment Agreement  (BE4  and  Higher  Version  without  gross-up  or  window 
period-2015 version) (filed as Exhibit 10.2 to Registrant's Quarterly Report on Form 10-Q for the quarter ended 
September 30, 2015, and incorporated herein by reference).

Schedule of Named Executive Officers Party to Change of Control Employment Agreement (BE4 and Higher 
Version without gross-up or window period-2015 version).

Form of Change of Control Employment Agreement (BE4 and Higher Version) (filed as Exhibit 10.1 to Registrant's 
Current Report on Form 8-K dated November 18, 2008, and incorporated herein by reference).

29

10.21A†

10.22†

10.23†

Schedule  of  Named  Executive  Officers  Party  to  Change  of  Control  Employment Agreement  (BE4  and  Higher 
Version).

Form  of  Change  of  Control  Employment Agreement  (BE4  and  Higher  Version  without  gross-up  or  window 
period-2009  version)  (filed  as  Exhibit 10.42  to  Registrant's Annual  Report  on  Form 10-K  for  the  year  ended 
December 31, 2009, and incorporated herein by reference).

Form of Change of Control Employment Agreement (BE2-BE3 Version) (filed as Exhibit 10.2 to Registrant's Current 
Report on Form 8-K dated November 18, 2008, and incorporated herein by reference).

10.23A†

Schedule of Named Executive Officers Party to Change of Control Employment Agreement (BE2-BE3 Version).

13

14

16

18

21

23.1

24

31.1

31.2

32

33

34

35

95

99

101

(not applicable)

(not applicable)

(not applicable)

(not applicable)

Subsidiaries of Registrant.

Consent of Ernst & Young LLP.

(not applicable)

Chairman  and  CEO  Rule 13a-14(a)/15d-14(a)  Certification  of  Periodic  Report  (pursuant  to  Section 302  of  the 
Sarbanes-Oxley Act of 2002).

Executive  Vice  President  and  CFO  Rule 13a-14(a)/15d-14(a)  Certification  of  Periodic  Report  (pursuant  to 
Section 302 of the Sarbanes-Oxley Act of 2002).

Section 1350 Certification of Periodic Report (pursuant to Section 906 of the Sarbanes-Oxley Act of 2002).

(not applicable)

(not applicable)

(not applicable)

(not applicable)

(not applicable)

Financial statements from Annual Report on Form 10-K of the Registrant for the year ended December 31, 2018, 
formatted in Extensible Business Reporting Language: (i) the Consolidated Balance Sheets, (ii) the Consolidated 
Statements of Income, (iii) the Consolidated Statements of Changes in Shareholders' Equity, (iv) the Consolidated 
Statements of Cash Flows and (v) the Notes to Consolidated Financial Statements.

†

Management contract or compensatory plan or arrangement.

File No. for all filings under Exchange Act, unless otherwise noted: 1-10706.

Item 16.  Form 10-K Summary

Not applicable.

30

 
FINANCIAL REVIEW AND REPORTS

Comerica Incorporated and Subsidiaries

Performance Graph

Selected Financial Data

2018 Overview and 2019 Outlook

Results of Operations

Strategic Lines of Business

Balance Sheet and Capital Funds Analysis

Risk Management

Critical Accounting Policies

Supplemental Financial Data

Forward-Looking Statements

Consolidated Financial Statements:

Consolidated Balance Sheets

Consolidated Statements of Income

Consolidated Statements of Comprehensive Income

Consolidated Statements of Changes in Shareholders’ Equity

Consolidated Statements of Cash Flows

Notes to Consolidated Financial Statements

Report of Management

Reports of Independent Registered Public Accounting Firm

Historical Review

F-2

F-3

F-4

F-6

F-12

F-15

F-21

F-35

F-38

F-39

F-41

F-42

F-43

F-44

F-45

F-46

F-104

F-105

F-107

F-1

PERFORMANCE GRAPH

The  graph  shown  below  compares  the  total  returns  (assuming  reinvestment  of  dividends)  of  Comerica  Incorporated 
common stock, the S&P 500 Index, and the KBW Bank Index. The graph assumes $100 invested in Comerica Incorporated common 
stock (returns based on stock prices per the NYSE) and each of the indices on December 31, 2013 and the reinvestment of all 
dividends during the periods presented.

The performance shown on the graph is not necessarily indicative of future performance.

F-2

SELECTED FINANCIAL DATA

2018

2017

2016

2015

2014

(dollar amounts in millions, except per share data)
Years Ended December 31

EARNINGS SUMMARY

Net interest income
Provision for credit losses
Noninterest income
Noninterest expenses
Provision for income taxes
Net income
Net income attributable to common shares
PER SHARE OF COMMON STOCK

Diluted earnings per common share
Cash dividends declared
Common shareholders’ equity
Tangible common equity (e)
Market value
Average diluted shares (in millions)
YEAR-END BALANCES

Total assets
Total earning assets
Total loans
Total deposits
Total medium- and long-term debt
Total common shareholders’ equity
AVERAGE BALANCES

Total assets
Total earning assets
Total loans
Total deposits
Total medium- and long-term debt
Total common shareholders’ equity
CREDIT QUALITY

Total allowance for credit losses
Total nonperforming loans
Foreclosed property
Total nonperforming assets
Net credit-related charge-offs
Net credit-related charge-offs as a percentage of average total loans
Allowance for loan losses as a percentage of total period-end loans
Allowance for loan losses as a multiple of total nonperforming loans
RATIOS

Net interest margin
Return on average assets
Return on average common shareholders’ equity
Dividend payout ratio
Average common shareholders’ equity as a percentage of average assets
Common equity tier 1 capital as a percentage of risk-weighted assets (f)
Tier 1 capital as a percentage of risk-weighted assets (f)
Common equity ratio
Tangible common equity as a percentage of tangible assets (e)

$

701
229
1
230
51
0.11%
1.34

2.9x

3.58%
1.75
15.82
25.17
11.04
11.14
11.14
10.60
9.78

(a)
(a), (c)

$ 2,352
(1)
976
1,794
300
1,235
1,227

$

7.20
1.84
46.89
42.89
68.69
171

$ 70,818
65,513
50,163
55,561
6,463
7,507

$ 70,724
65,410
48,766
55,935
5,842
7,809

(c)

(c)
(d)

$ 2,061
74
1,107
1,860
491
743
738

$

4.14
1.09
46.07
42.34
86.81
178

$ 71,567
65,880
49,173
57,903
4,622
7,963

$ 71,452
66,300
48,558
57,258
4,969
7,952

$

754
410
5
415
92
0.19%
1.45
1.7x

3.11%
1.04
9.34
25.77
11.13
11.68
11.68
11.13
10.32

$ 1,797
248
1,051
1,930
193
477
473

$

2.68
0.89
44.47
40.79
68.11
177

$ 72,978
67,518
49,088
58,985
5,160
7,796

$ 71,743
66,545
48,996
57,741
4,917
7,674

$

771
590
17
607
157
0.32%
1.49
1.2x

2.71%
0.67
6.22
32.48
10.70
11.09
11.09
10.68
9.89

(b)
(b)

$ 1,689
147
1,035
1,827
229
521
515

$

2.84
0.83
43.03
39.33
41.83
181

$ 71,877
66,687
49,084
59,853
3,058
7,560

$ 70,247
65,129
48,628
58,326
2,905
7,534

$

679
379
12
391
101
0.21%
1.29
1.7x

2.60%
0.74
6.91
28.33
10.73
10.54
10.54
10.52
9.70

$ 1,655
27
857
1,615
277
593
586

$

3.16
0.79
41.35
37.72
46.84
185

$ 69,186
63,788
48,593
57,486
2,675
7,402

$ 66,336
61,560
46,588
54,784
2,963
7,373

$

635
290
10
300
25
0.05%
1.22
2.1x

2.69%
0.89
8.05
24.09
11.11
n/a
10.50
10.70
9.85

(a)  Effective January 1, 2018, adoption of Topic 606 resulted in a change in presentation which records certain costs in the same category as the associated 

revenues. The effect of this change was to reduce noninterest income and expenses by $145 million for the year ended December 31, 2018.
(b)  Effective January 1, 2015, contractual changes to a card program resulted in a change to the accounting presentation of the related revenues and 

expenses. The effect of this change was an increase of $177 million in 2015 to both noninterest income and noninterest expenses. Amounts prior to 2015 
reflect revenues from this card program net of related noninterest expenses.

(c)  Noninterest expenses included restructuring charges of $53 million, $45 million and $93 million in 2018, 2017 and 2016, respectively.
(d)  The provision for income taxes for 2017 was impacted by a $107 million charge to adjust deferred taxes as a result of the enactment of the Tax Cuts and 

Jobs Act.

(e)  See Supplemental Financial Data section for reconcilements of non-GAAP financial measures. 
(f)     Ratios calculated based on the risk-based capital requirements in effect at the time. The U.S. implementation of the Basel III regulatory capital framework  

became effective on January 1, 2015, with transitional provisions. 

n/a - not applicable.

F-3

2018 OVERVIEW AND 2019 OUTLOOK

Comerica Incorporated (the Corporation) is a financial holding company headquartered in Dallas, Texas. The Corporation's 
major business segments are the Business Bank, the Retail Bank and Wealth Management. The core businesses are tailored to 
each of the Corporation's three primary geographic markets: Michigan, California and Texas. Information about the activities of 
the Corporation's business segments is provided in Note 23 to the consolidated financial statements.

As a financial institution, the Corporation's principal activity is lending to and accepting deposits from businesses and 
individuals. The primary source of revenue is net interest income, which is principally derived from the difference between interest 
earned on loans and investment securities and interest paid on deposits and other funding sources. The Corporation also provides 
other  products  and  services  that  meet  the  financial  needs  of  customers  which  generate  noninterest  income,  the  Corporation's 
secondary source of revenue. Growth in loans, deposits and noninterest income is affected by many factors, including economic 
conditions in the markets the Corporation serves, the financial requirements and economic health of customers, and the ability to 
add new customers and/or increase the number of products used by current customers. Success in providing products and services 
depends on the financial needs of customers and the types of products desired.

The accounting and reporting policies of the Corporation and its subsidiaries conform to generally accepted accounting 
principles (GAAP) in the United States (U.S.). The Corporation's consolidated financial statements are prepared based on the 
application of accounting policies, the most significant of which are described in Note 1 to the consolidated financial statements. 
The most critical of these significant accounting policies are discussed in the “Critical Accounting Policies” section of this financial 
review. 

OVERVIEW

•  Net income was $1.2 billion in 2018, an increase of $492 million, or 66 percent, compared to $743 million in 2017. Net 

income per diluted common share was $7.20 in 2018 compared to $4.14 in 2017, an increase of 74 percent. 

•  Average loans were $48.8 billion in 2018, an increase of $208 million compared to 2017. The increase in average loans 
primarily reflected increases in Technology and Life Sciences as well as National Dealer Services, partially offset by 
decreases in Corporate Banking and Energy. 

•  Average deposits decreased $1.3 billion, or 2 percent, to $55.9 billion in 2018, with the largest decrease in general Middle 
Market driven by a $925 million decline in Municipalities. The decrease in average deposits reflected a decrease of $1.8 
billion, or 6 percent, in average noninterest-bearing deposits, partially offset by an increase of $449 million, or 2 percent, 
in average interest-bearing deposits. 

•  Net interest income was $2.4 billion in 2018, an increase of $291 million, or 14 percent, compared to 2017, and the net 
interest margin increased 47 basis points in 2018 to 3.58 percent, from 3.11 percent in 2017. Both increases were primarily 
driven by the net benefit from higher short-term rates.

•  The provision for credit losses decreased $75 million to a $1 million benefit in 2018, reflecting a $683 million decline 

in total criticized loans and a $41 million decrease in net credit-related charge-offs. 

•  Noninterest income decreased $131 million to $976 million in 2018, reflecting a $118 million decrease due to a presentation 
change resulting from the adoption of a new accounting standard1 and a $20 million loss related to repositioning the 
securities portfolio in 2018. 

•  Noninterest expenses decreased $66 million to $1.8 billion in 2018, reflecting a $118 million decrease due to a presentation 
change resulting from the adoption of a new accounting standard1, partially offset by an increase in salaries and benefits 
expense, mostly due to higher incentive compensation tied to performance.

•  The provision for income taxes decreased $191 million to $300 million in 2018. The decrease primarily reflected the 
impact of the 14-percentage-point decrease in the statutory federal tax rate in 2018 and a $120 million decrease due to 
discrete tax items, partially offset by an increase in pre-tax income.

•  The Corporation repurchased 14.8 million shares of common stock during 2018 under the equity repurchase program 
and increased the cash dividend 69 percent to $1.84 per share. All together, $1.6 billion was returned to shareholders in 
2018, an increase of $903 million, or 125 percent, compared to 2017.

________________________________________________________
1Effective January 1, 2018, the Corporation adopted Accounting Standards Codification ("ASC") Topic 606, "Revenue from Contracts with 
Customers," as a result, revenue from certain products is now presented net of costs. For further information, refer to Note 1 to the consolidated 
financial statements. 

F-4

GROWTH IN EFFICIENCY AND REVENUE INITIATIVE

Since the GEAR Up initiative was launched in 2016, the Corporation consolidated 38 banking centers, implemented a 
new  retirement  program  resulting  in  a  significant  reduction  in  retirement  plan  expense  and  reduced  the  number  of  full-time 
equivalent employees by over 900. Other expense reduction efforts included rationalizing and modernizing technology (including 
optimizing infrastructure platforms, process optimization and migrating certain applications to cloud-based systems), as well as 
consolidating office and operations space. Additionally, the Corporation completed a plan for an end-to-end credit redesign, which 
streamlines the credit process and increases the capacity of relationship managers to service clients. Revenue improvements were 
achieved through product enhancements, enhanced sales tools and training and improved customer analytics to drive opportunities. 
The impact of increases in short-term rates and the execution of GEAR Up initiatives helped lower the efficiency ratio to 53.6 
percent for 2018, compared to 58.6 percent for 2017. Return on equity for 2018 increased to 15.8 percent, compared to 9.3 percent
for 2017. 

Restructuring  activities  were  completed,  resulting  in  cumulative  pre-tax  restructuring  charges  of  $191  million  from 
inception  through  December 31,  2018.  For  additional  information  regarding  restructuring  charges,  refer  to  Note  22  to  the 
consolidated financial statements.

2019 OUTLOOK

For full-year 2019 compared to full-year 2018, management expects the following, assuming a continuation of the current 

economic and rate environment:

•  Growth in average loans of 2 percent to 4 percent, reflecting increases in most lines of business.

•  Decline in average deposits of 1 percent to 2 percent from a decrease in non-interest-bearing deposits.

•  Growth in net interest income of 4 percent to 5 percent from the full-year net benefit of higher interest rates ($130 million 
to $150 million), growth in average loans and repositioning the securities portfolio, partially offset by higher average 
debt and lower interest recoveries.

• 

Provision for credit losses of 15 basis points to 25 basis points and net charge-offs to remain low.

•  Noninterest income higher by 2 percent to 3 percent, benefiting from growth in card fees and fiduciary income, partially 

offset by lower service charges on deposit accounts and lower derivative income.

•  Noninterest expenses lower by 3 percent, reflecting the end of restructuring charges from the GEAR Up initiatives ($53 
million in full-year 2018), FDIC insurance expense lower by $16 million from the discontinuance of the surcharge, as 
well as lower compensation and pension expense, partially offset by higher outside processing expenses in line with 
growing revenue, technology expenditures and typical inflationary pressures.

  Noninterest expenses excluding restructuring expenses expected to be stable.

  Lower compensation driven by executive incentive compensation, partially offset by merit increases.

• 

Income tax expense to be approximately 23 percent of pre-tax income, excluding any tax impact from employee stock 
transactions.

Full-year 2018 included discrete tax benefits of $48 million.

•  Common equity Tier 1 capital ratio target of 9.5 percent to 10 percent through continued return of excess capital. 

F-5

 
 
RESULTS OF OPERATIONS

The following provides a comparative discussion of the Corporation's consolidated results of operations for 2018 compared 
to 2017. A comparative discussion of results for 2017 compared to 2016 is provided at the end of this section. For a discussion of 
the Critical Accounting Policies that affect the consolidated results of operations, see the "Critical Accounting Policies" section 
of this financial review.

ANALYSIS OF NET INTEREST INCOME

(dollar amounts in millions)
Years Ended December 31

Commercial loans
Real estate construction loans
Commercial mortgage loans
Lease financing
International loans
Residential mortgage loans
Consumer loans

Total loans (a)

Mortgage-backed securities
Other investment securities

Total investment securities

Interest-bearing deposits with banks
Other short-term investments
Total earning assets

Cash and due from banks
Allowance for loan losses
Accrued income and other assets

Total assets

Money market and interest-bearing checking deposits
Savings deposits
Customer certificates of deposit
Foreign office time deposits (b)

Total interest-bearing deposits

Short-term borrowings
Medium- and long-term debt

Total interest-bearing sources

Noninterest-bearing deposits
Accrued expenses and other liabilities
Total shareholders’ equity

Total liabilities and shareholders’ equity

Net interest income/rate spread

Impact of net noninterest-bearing sources of funds
Net interest margin (as a percentage of average earning

assets)

2018

2017

2016

Interest

Average
Balance
$ 30,534 $ 1,416
164
429
18
51
75
109
2,262

3,155
9,131
470
1,021
1,983
2,472
48,766

Interest

Average
Average
Balance
Rate
4.64% $ 30,415 $ 1,162
5.21
124
2,958
4.69
358
9,005
3.82
13
509
4.97
47
1,157
3.77
74
1,989
4.41
94
2,525
4.64
1,872
48,558

Average
Rate

Interest

Average
Balance
3.82% $ 31,062 $ 1,008
91
2,508
4.18
314
8,981
3.97
18
684
2.63
50
1,367
4.07
71
1,894
3.70
2,500
3.70
83
1,635
48,996
3.85

214
51
265

91
1
2,619

2.28
1.86
2.19

1.94
0.96
3.99

0.50
111
0.04
1
0.46
10
— 1.19
0.46
122
1.90
1
2.42
144
0.82
267

9,099
2,711
11,810

4,700
134
65,410

1,135
(695)
4,874
$ 70,724

$ 22,378
2,199
2,092
25
26,694
62
5,842
32,598

29,241
1,076
7,809
$ 70,724

202
48
250

60
—
2,182

33
—
9
—
42
3
76
121

9,330
2,877
12,207

5,443
92
66,300

1,209
(728)
4,671
$ 71,452

$ 21,585
2,133
2,471
56
26,245
277
4,969
31,491

31,013
996
7,952
$ 71,452

$ 2,352

3.17

0.41

$ 2,061

9,356
2,992
12,348

5,099
102
66,545

1,146
(730)
4,782
$ 71,743

$ 22,744
2,013
3,200
33
27,990
138
4,917
33,045

29,751
1,273
7,674
$ 71,743

2.17
1.66
2.05

1.09
0.64
3.29

0.15
0.02
0.36
0.64
0.16
1.14
1.51
0.38

2.91

0.20

3.58%  

3.11%  

Average
Rate

3.25%
3.63
3.49
2.64
3.63
3.76
3.32
3.34

2.19
1.51
2.02

0.51
0.61
2.88

203
44
247

26
1
1,909

27
—
13
—
40
—
72
112

0.11
0.02
0.40
0.35
0.14
0.45
1.45
0.34

$ 1,797

2.54

0.17

2.71%

(a)  Nonaccrual loans are included in average balances reported and in the calculation of average rates.
(b)  Includes substantially all deposits by foreign depositors; deposits are primarily in excess of $100,000.

F-6

 
 
 
 
 
RATE/VOLUME ANALYSIS

(in millions)
Years Ended December 31

Interest Income:

Commercial loans

Real estate construction loans

Commercial mortgage loans

Lease financing

International loans

Residential mortgage loans

Consumer loans

 Total loans

Mortgage-backed securities

Other investment securities

 Total investment securities

Interest-bearing deposits with banks

Other short-term investments

Total interest income

Interest Expense:

Money market and interest-bearing checking deposits

Savings deposits

Customer certificates of deposit

Total interest-bearing deposits

Short-term borrowings

Medium- and long-term debt

Total interest expense

Increase
Due to Rate

$

248

$

30

65

6

11

1

17

378

12

5

17

46

1

442

74

1

3

78

2

50

130

6

10

6

(1)

(7)

—

(2)

12

—

(2)

(2)

(15)

—

(5)

4

—

(2)

2

(4)

18

16

2018/2017

Increase
(Decrease)
Due to 
Volume (a)

Net
Increase
(Decrease)

Increase
(Decrease)
Due to Rate

2017/2016

Increase
(Decrease)
Due to 
Volume (a)

Net
Increase
(Decrease)

$

254

$

179

$

(25)

$

154

40

71

5

4

1

15

390

12

3

15

31

1

437

78

1

1

80

(2)

68

146

291

14

43

—

6

(1)

10

251

(1)

5

4

30

—

285

8

—

(1)

7

1

23

31

$

254

$

19

1

(5)

(9)

4

1

(14)

—

(1)

(1)

4

(1)

(12)

(2)

—

(3)

(5)

2

(19)

(22)

10

33

44

(5)

(3)

3

11

237

(1)

4

3

34

(1)

273

6

—

(4)

2

3

4

9

$

264

Net interest income

$
(a)  Rate/volume variances are allocated to variances due to volume.

312

$

(21)

$

NET INTEREST INCOME

Net interest income is the difference between interest earned on assets and interest paid on liabilities. Gains and losses 
related to risk management interest rate swaps that convert fixed rate debt to a floating rate and qualify as hedges are included 
with the interest expense of the hedged item. Refer to the Analysis of Net Interest Income and the Rate/Volume Analysis tables 
above for an analysis of net interest income for the years ended December 31, 2018, 2017 and 2016 and details of the components 
of the change in net interest income for 2018 compared to 2017 and 2017 compared to 2016.

Net interest income was $2.4 billion in 2018, an increase of $291 million compared to 2017. The increase in net interest 
income primarily reflected the net benefit from higher short-term rates. Average earning assets decreased $890 million, primarily 
reflecting decreases of $743 million in interest-bearing deposits with banks and $397 million in average investment securities, 
primarily due to unrealized losses, partially offset by a $208 million increase in average loans.

The net interest margin increased 47 basis points in 2018 to 3.58 percent, from 3.11 percent in 2017, primarily reflecting 

the net benefit from higher short-term rates.

The Corporation utilizes various asset and liability management strategies to manage net interest income exposure to 
interest rate risk. Refer to the “Market and Liquidity Risk” section of this financial review for additional information regarding 
the Corporation's asset and liability management policies and the “Balance Sheet and Capital Funds Analysis” section for further 
discussion on changes in earning assets and interest-bearing liabilities.

PROVISION FOR CREDIT LOSSES

The provision for credit losses was a benefit of $1 million in 2018, compared to a provision of $74 million in 2017. The 
provision  for  credit  losses  includes  both  the  provision  for  loan  losses  and  the  provision  for  credit  losses  on  lending-related 
commitments. 

F-7

The provision for loan losses is recorded to maintain the allowance for loan losses at the level deemed appropriate by the 
Corporation to cover probable credit losses inherent in the portfolio. The provision for loan losses was $11 million in 2018, a 
decrease of $62 million compared to $73 million in 2017, primarily resulting from improved credit quality in most lines of business, 
reflected by lower net loan charge-offs and criticized loans. Net loan charge-offs in 2018 decreased $41 million to $51 million, or 
0.11 percent of average total loans, compared to $92 million, or 0.19 percent, in 2017. The decrease primarily reflected lower 
charge-offs in Energy, Technology and Life Sciences as well as Corporate Banking. Criticized loans decreased $683 million to 
$1.5 billion in 2018.

The provision for credit losses on lending-related commitments is recorded to maintain reserves at the level deemed 
appropriate by the Corporation to cover probable credit losses inherent in lending-related commitments. The provision for credit 
losses on lending-related commitments was a benefit of $12 million in 2018, a decrease of $13 million compared to a provision 
of $1 million in 2017. The increase in the provision benefit primarily reflected a decrease in commercial commitments, primarily 
in Energy. There were no lending-related commitment charge-offs in 2018 and 2017.

For further discussion of the allowance for loan losses and the allowance for credit losses on lending-related commitments, 
including the methodology used in the determination of the allowances and an analysis of the changes in the allowances, refer to 
Note 1 to the consolidated financial statements and the "Credit Risk" section of this financial review.

PRESENTATION CHANGES

Noninterest income and noninterest expenses for 2018 reflect certain presentation changes resulting from the adoption 
of ASC Topic 606, "Revenue from Contracts with Customers," (Topic 606), effective January 1, 2018. These changes primarily 
impacted card fees and service charges on deposit accounts in noninterest income, fully offset by the impact to outside processing 
fee expense in noninterest expenses. See Note 1 to the consolidated financial statements for further details on the adoption of Topic 
606. The table below summarizes the proforma effects to 2017.

(in millions)
Year Ended December 31, 2017
Card fees
Service charges on deposit accounts
Total noninterest income

Reported Amounts

Proforma Effects

Proforma Amounts (a)

$

333 $
227
1,107

(113) $
(5)
(118)

220
222
989

Outside processing fee expense
Total noninterest expenses
(a)  The  Corporation  believes  proforma  noninterest  income  and  noninterest  expenses  (each  a  non-GAAP  measure)  provide  a  greater 

366
1,860

248
1,742

(118)
(118)

understanding of ongoing operations and enhances comparability of results with 2017. 

NONINTEREST INCOME

(in millions)
Years Ended December 31
Card fees
Service charges on deposit accounts
Fiduciary income
Commercial lending fees
Foreign exchange income
Letter of credit fees
Bank-owned life insurance
Brokerage fees
Net securities losses
Other noninterest income (a)
Total noninterest income

2018

2017

2016

244
211
206
85
47
40
39
27
(19)
96
976

$

$

333
227
198
85
45
45
43
23
—
108
1,107

$

$

303
219
190
89
42
50
42
19
—
97
1,051

$

$

(a)  The table below provides further details on certain categories included in other noninterest income.

Noninterest income decreased $131 million to $976 million in 2018, compared to $1.1 billion in 2017. The change in 
noninterest income included the Topic 606 proforma reduction of $118 million to 2017, a $20 million loss due to the repositioning 
of the securities portfolio and a $10 million reduction in deferred compensation asset returns (offset in noninterest expenses). 
Excluding these items, noninterest income increased $17 million in 2018. The increase was primarily due to increases in card fees 
(proforma)  and  fiduciary  income,  partly  offset  by  a  decrease  in  service  charges  on  deposit  accounts  (proforma).  For  further 
information about the investment securities portfolio, refer to "Balance Sheet and Capital Funds Analysis" section in this financial 
review.

F-8

 
Card fees consist primarily of interchange and other fee income earned on government card, commercial card, debit/
Automated Teller Machine (ATM) card and merchant payment processing services. Card fees increased $24 million (proforma), 
or 11 percent, to $244 million in 2018, compared to $220 million (proforma) in 2017. The increase in 2018 was primarily due to 
volume-driven increases in merchant payment processing services and government card programs.

Service  charges  on  deposit  accounts  consist  primarily  of  charges  on  retail  and  business  accounts,  including  fees  for 
treasury management services. Service charges on deposit accounts decreased $11 million (proforma), or 5 percent, to $211 million 
in 2018, compared to $222 million (proforma) in 2017. The decrease in service charges on deposit accounts included higher 
earnings credit allowances provided on customer deposit balances due to increases in short-term interest rates.

Fiduciary income consists of fees and commissions from asset management, custody, recordkeeping, investment advisory 
and other services provided primarily to personal and institutional trust customers. These fees are based on services provided, 
assets under management and assets under administration. Fluctuations in the market values of the underlying assets managed or 
administered, which include both equity and fixed income securities, and net asset flows within client accounts impact fiduciary 
income. Fiduciary income increased $8 million, or 4 percent, to $206 million in 2018, compared to $198 million in 2017. The 
increase in 2018 was primarily driven by the favorable impact on fees from average market value increases and net positive asset 
flows for trust as well as investment advisory services.

Other noninterest income decreased $12 million, or 11 percent, to $96 million in 2018, compared to $108 million in 2017, 
driven by a $10 million decrease in deferred compensation asset returns (offset in noninterest expenses) and smaller changes in 
various categories as illustrated in the following table.

(in millions)
Years Ended December 31
Customer derivative income
Insurance commissions
Investment banking fees
Securities trading income
Income from principal investing and warrants
Risk management hedge ineffectiveness
Deferred compensation asset returns (a)
All other noninterest income
Other noninterest income

2018

2017

2016

26
10
9
8
4
—
(2)
41
96

$

$

26
8
9
8
6
1
8
42
108

$

$

27
10
7
6
7
(2)
3
39
97

$

$

(a)  Compensation deferred by the Corporation's officers and directors is invested based on investment selections of the officers and directors. 
Income earned on these assets is reported in noninterest income and the offsetting change in deferred compensation plan liabilities is 
reported in salaries and benefits expense. 

NONINTEREST EXPENSES   

(in millions)
Years Ended December 31
Salaries and benefits expense
Outside processing fee expense
Net occupancy expense
Software expense
Restructuring charges
Equipment expense
FDIC insurance expense
Advertising expense
Other noninterest expenses

Total noninterest expenses

2018

2017

2016

$

$

1,009
255
152
125
53
48
42
30
80
1,794

$

961 (a) $
366
154
126
45
45
51
28
84 (a)

989 (a)
336
157
119
93
53
54
21
108 (a)

$

1,860

$

1,930

(a)  Prior period amounts restated to reflect the adoption of Accounting Standard Update (ASU) 2017-07, "Compensation - Retirement Benefits 
(Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost," effective January 1, 
2018. For further information, refer to Note 1 to the consolidated financial statements.

Noninterest expenses decreased $66 million to $1.8 billion in 2018, compared to 2017. The change in noninterest expenses 
included the Topic 606 proforma reduction of $118 million to 2017 and an $8 million increase in restructuring charges. Excluding 
these items, noninterest expenses increased $44 million in 2018 primarily due to increases in salaries and benefits expense as well 
as outside processing fee expense (proforma), partly offset by decreases in FDIC insurance expense and other noninterest expenses.

Salaries and benefits expense increased $48 million, or 5 percent, to $1.0 billion in 2018, compared to $961 million in 
2017. The increase in salaries and benefits expense was driven by higher share-based and executive incentive compensation tied 

F-9

 
to financial performance as well as merit increases and technology-related labor costs, partially offset by decreases in workforce 
and deferred compensation expense (offset in noninterest income).

Outside processing fee expense increased $7 million (proforma), or 3 percent, to $255 million in 2018, compared to $248 
million (proforma) in 2017, primarily due to expenses tied to revenue-generating activities, including government card programs 
and merchant payment processing services, partially offset by $3 million of reduced expenses due to the wind down of a retirement 
savings program in 2018. 

Restructuring charges associated with the implementation of the GEAR Up initiative increased $8 million, or 18 percent,  

to $53 million in 2018, compared to $45 million in 2017, including increases of $11 million in technology costs and $2 million
in facilities costs, partially offset by a $5 million decrease in other restructuring costs such as professional and legal fees as well 
as contract termination fees. For further information about restructuring charges, refer to Note 22 to the consolidated financial 
statements.

FDIC insurance expense decreased $9 million, or 17 percent, to $42 million in 2018, compared to $51 million in 2017, 

primarily due to the completion of FDIC surcharges in third quarter 2018 as well as lower risk-based assessment rates.

Other noninterest expenses decreased $4 million, or 4 percent, to $80 million in 2018, compared to $84 million in 2017, 
driven by decreases of $6 million in operational losses and $5 million in state business taxes, partially offset by $6 million of net 
gains recognized on sales of assets in 2017 that did not repeat. The decrease in state business taxes was due to tax refunds obtained 
in 2018. 

INCOME TAXES AND RELATED ITEMS

The provision for income taxes was $300 million in 2018, compared to $491 million in 2017. The $191 million decrease
in the provision for income taxes in 2018, compared to 2017, primarily reflected the impact of a 14-percentage-point decrease in 
federal statutory tax rate in 2018 resulting from the Tax Cuts and Jobs Act and a $120 million decrease in discrete tax items, from 
a $72 million charge in 2017 to a benefit of $48 million in 2018, partially offset by the tax effect of a $301 million increase in pre-
tax income. The discrete tax charge in 2017 was primarily due to a $107 million adjustment to deferred taxes resulting from the 
Tax Cuts and Jobs Act, partially offset by tax benefits of $35 million from employee stock transactions. The discrete tax benefit 
in 2018 primarily resulted from a review of certain tax capitalization and recovery positions related to software and fixed assets 
included in the 2017 tax return and tax benefits of $23 million from employee stock transactions. 

Net deferred tax assets were $166 million at December 31, 2018, compared to $141 million at December 31, 2017. Refer 
to Note 18 to the consolidated financial statements for information about the components of net deferred tax assets. Deferred tax 
assets of $302 million were evaluated for realization and it was determined that a valuation allowance of $3 million related to state 
net operating loss carryforwards was needed at both December 31, 2018 and 2017. These conclusions were based on available 
evidence of projected future reversals of existing taxable temporary differences, assumptions made regarding future events and, 
when applicable, state loss carryback capacity.

2017 RESULTS OF OPERATIONS COMPARED TO 2016

Net interest income was $2.1 billion in 2017, an increase of $264 million compared to 2016. The increase in net interest 
income primarily reflected the net benefit from higher short-term rates and elevated interest recoveries, partially offset by one 
fewer day in 2017. Average earning assets decreased $245 million, primarily reflecting decreases of $438 million in average loans 
and $141 million in average investment securities, partially offset by an increase of $344 million in interest-bearing deposits with 
banks.

The net interest margin increased 40 basis points in 2017 to 3.11 percent, primarily reflecting the net benefit from higher 
rates. The "Analysis of Net Interest Income" and "Rate/Volume Analysis" tables under the "Net Interest Income" subheading in 
this section above provide an analysis of net interest income for 2017 and 2016 and details the components of the change in net 
interest income for 2017 compared to 2016.

The provision for credit losses, which includes both the provision for loan losses and the provision for credit losses on 
lending-related commitments, was $74 million in 2017, a decrease of $174 million compared to 2016. Net loan charge-offs in 
2017 decreased $54 million to $92 million, or 0.19 percent of average total loans, primarily reflecting lower Energy charge-offs. 
There were no lending-related commitment charge-offs in 2017, compared to $11 million in 2016, primarily reflecting improved 
credit quality.

Noninterest income increased $56 million, or 5 percent, to $1.1 billion in 2017 compared to 2016, partially driven by the 
GEAR Up initiative. Card fees increased $30 million, or 10 percent, to $333 million in 2017, primarily due to volume-driven 
increases from merchant payment processing services, including new customers, and government card programs. Service charges 
on deposit accounts increased $8 million, or 4 percent, to $227 million in 2017, primarily reflecting an increase in commercial 
service charges. Fiduciary income increased $8 million, or 5 percent, to $198 million in 2017, primarily driven by the favorable 
impact on fees from market value increases and net asset inflows. Other noninterest income increased $11 million, or 11 percent, 
to $108 million in 2017, driven by small changes in various categories of other noninterest income. Refer to the table provided 

F-10

under the "Noninterest Income" subheading previously in this section for details of certain categories included in other noninterest 
income.

Noninterest expenses decreased $70 million to $1.9 billion in 2017, compared to 2016. Excluding restructuring charges 
related to the GEAR Up initiative, noninterest expenses decreased $22 million in 2017. Salaries and benefits expense decreased 
$28 million, or 3 percent, to $961 million in 2017, primarily driven by the GEAR Up initiative, partially offset by an increase in 
performance-based incentive compensation and a one-time bonus of $1,000 to approximately 4,500 non-officer employees, as 
well as the impact of merit increases. Outside processing fee expense increased $30 million, or 9 percent, to $366 million in 2017, 
primarily tied to revenue-generating activities, including expenses related to increases in merchant payment processing services 
and  government  card  programs,  as  well  as  increases  in  other  outsourced  services.  Restructuring  charges  associated  with  the 
implementation of the GEAR Up initiative decreased $48 million to $45 million in 2017, including decreases of $42 million in 
employee costs, $19 million in other restructuring costs and $13 million in facilities costs, partially offset by an increase of $26 
million in technology costs. Equipment expense decreased $8 million, or 15 percent, to $45 million in 2017, primarily driven by 
favorable price renegotiations and a reduction in equipment depreciation expense, in part reflecting careful management of fully 
depreciated assets. Software expense increased $7 million, or 6 percent, to $126 million in 2017, primarily reflecting continued 
investment  in  the  Corporation's  technology  infrastructure. Advertising  expense  increased  $7  million  to  $28  million  in  2017, 
primarily due to increased marketing expenses tied to new initiatives as well as an increase in sponsorship expenses.

The provision for income taxes increased $298 million to $491 million in 2017, primarily due to an increase in pre-tax 
income of $564 million and the $107 million charge to adjust deferred taxes resulting from the Tax Cuts and Jobs Act, partially 
offset by a $35 million tax benefit from employee stock transactions.

F-11

STRATEGIC LINES OF BUSINESS

The Corporation has strategically aligned its operations into three major business segments: the Business Bank, the Retail 
Bank and Wealth Management. These business segments are differentiated based upon the type of customer and the related products 
and services provided. In addition to the three major business segments, the Finance Division is also reported as a segment. The 
Other category includes items not directly associated with these business segments or the Finance segment. The performance of 
the business segments is not comparable with the Corporation's consolidated results and is not necessarily comparable with similar 
information  for  any  other  financial  institution. Additionally,  because  of  the  interrelationships  of  the  various  segments,  the 
information presented is not indicative of how the segments would perform if they operated as independent entities. Market segment 
results are also provided for the Corporation's three primary geographic markets: Michigan, California and Texas. In addition to 
the three primary geographic markets, Other Markets is also reported as a market segment. Note 23 to the consolidated financial 
statements describes the Corporation's segment reporting methodology as well as the business activities of each business segment 
and presents financial results of these business segments for the years ended December 31, 2018, 2017 and 2016.

The Corporation's management accounting system assigns balance sheet and income statement items to each segment 
using certain methodologies, which are regularly reviewed and refined. These methodologies may be modified as the management 
accounting system is enhanced and changes occur in the organizational structure and/or product lines. During 2018, the Small 
Business component was reclassified from Retail Bank to Business Bank. Results in all periods presented have been adjusted to 
reflect the change in organizational structure.

Net interest income for each segment reflects the interest income generated by earning assets less interest expense on 
interest-bearing liabilities plus the net impact from associated internal funds transfer pricing (FTP). The FTP methodology allocates 
credits to each business segment for deposits and other funds provided as well as charges for loans and other assets being funded. 
FTP crediting rates on deposits and other funds provided reflect the long-term value of deposits and other funding sources based 
on their implied maturities. FTP charge rates for funding loans and other assets reflect a matched cost of funds based on the pricing 
and  duration  characteristics  of  the  assets. Therefore,  net  interest  income  for  each  segment  primarily  reflects  the  volume  and 
associated FTP impacts of loan and deposit levels. Business segments that generate deposits benefited from higher FTP crediting 
rates on deposits during 2018 compared to the prior year. As overall market rates increased, FTP charges for funding loans increased 
for asset-generating business segments in the year ended December 31, 2018 compared to the prior year.

The following sections present a summary of the performance of each of the Corporation's business and market segments 
for the year ended December 31, 2018 compared to the same period in the prior year. The proforma effect of Topic 606 to the year 
ended December 31, 2017, reducing both noninterest income and noninterest expenses by $118 million, primarily impacted the 
Business Bank and Other Markets segments.

BUSINESS SEGMENTS

The following table presents net income (loss) by business segment. 

(dollar amounts in millions)
Years Ended December 31
Business Bank
Retail Bank
Wealth Management

Finance
Other (a)
Total

2018

2017

2016

$

$

1,024
65
121
1,210
(1)
26
1,235

85% $
5
10
100%

$

755
(6)
87
836
(23)
(70)
743

90% $
(1)
11
100%

$

613
(61)
68
620
(146)
3
477

99%
(10)
11
100%

(a)  Primarily reflected discrete tax items, including a benefit of $48 million in 2018 and a net charge of $72 million in 2017.

The Business Bank's net income increased $269 million to $1.0 billion. Average loans increased $377 million and average 
deposits decreased $1.9 billion. Net interest income increased $100 million to $1.6 billion. An increase in loan income of $355 
million was partially offset by a $41 million increase in deposit costs and a $215 million increase in allocated net FTP charges. 
The FTP allocation reflected increases in funding charges and crediting rates on deposits as a result of higher short-term rates. 
The provision for credit losses decreased $63 million to $6 million, primarily reflecting improved credit quality in most lines of 
business. Net credit-related charge-offs decreased $44 million to $52 million, with most of the decreases in Energy, Technology 
and Life Sciences as well as Corporate Banking. Including the Topic 606 proforma reduction of $105 million to the prior year, 
noninterest income increased $13 million and noninterest expenses increased $34 million. Noninterest income benefited from a 
$22 million increase in card fees (proforma) and smaller increases in other noninterest income categories, partially offset by 
decreases of $9 million in service charges on deposit accounts (proforma) and $5 million in letter of credit fees. Noninterest 
expenses  reflected  increases  of  $12  million  in  salaries  and  benefits  expense,  $11  million  in  outside  processing  fee  expense 
(proforma), $8 million in allocated corporate overhead and smaller increases in other categories of noninterest expenses, partially 

F-12

 
 
 
offset by an $8 million decrease in FDIC insurance expense. Additionally, noninterest expenses in 2017 included $6 million in 
net gains recognized on sales of assets that did not repeat. 

The Retail Bank's net income increased $71 million to $65 million. Average loans and deposits were stable. Net interest 
income increased $95 million to $548 million. Increases of $98 million in allocated net FTP credits and $14 million in loan income  
were partially offset by a $16 million increase in deposit costs. The FTP allocation primarily reflected an increase in crediting 
rates on deposits as a result of higher short-term rates. The provision for credit losses decreased $3 million to a benefit of $1 
million. Including the Topic 606 proforma reduction of $12 million to the prior year, noninterest income decreased $6 million and 
noninterest expenses decreased $1 million. Noninterest income was primarily impacted by a decrease of $6 million due to the 
wind down of a retirement savings program and a $2 million decline in service charges on deposit accounts (proforma), partially 
offset by a $2 million increase in card fees (proforma). The decrease in noninterest expenses primarily reflected decreases of $6 
million in outside processing fee expense (proforma), including a $3 million decrease resulting from the wind down of a retirement 
savings program in 2018, and $4 million in FDIC insurance expense as well as smaller decreases in other categories of noninterest 
expenses, mostly offset by increases of $9 million in salaries and benefits expense and $4 million in restructuring charges.

Wealth Management's net income increased $34 million to $121 million. Net interest income increased $12 million to 
$181 million, primarily reflecting an increase in crediting rates on deposits as a result of higher short-term rates. The provision 
for credit losses decreased $4 million to a benefit of $3 million. Net credit-related recoveries decreased $4 million to $1 million
in 2018. Noninterest income increased $11 million to $266 million, primarily reflecting increases of $7 million in fiduciary income 
and $3 million in brokerage fees. Noninterest expenses increased $8 million to $293 million, primarily reflecting a $5 million
increase in salaries and benefits expense and smaller increases in other categories of noninterest expenses.

The net loss in the Finance segment decreased $22 million to $1 million, primarily reflecting an increase in net FTP 
revenue as a result of higher rates charged to the business segments under the Corporation's internal FTP methodology, partially 
offset by a $15 million loss, net of tax, due to repositioning the securities portfolio.

MARKET SEGMENTS

The following table presents net income (loss) by market segment.

(dollar amounts in millions)
Years Ended December 31
Michigan
California
Texas
Other Markets

Finance & Other (a)

Total

2018

2017

2016

$

$

326
375
229
280
1,210
25
1,235

27% $
31
19
23
100%

$

247
229
175
185
836
(93)
743

30% $
27
21
22
100%

$

210
246
(39)
203
620
(143)
477

33%
40
(6)
33
100%

(a)  Primarily reflected discrete tax items, including a benefit of $48 million in 2018 and a net charge of $72 million in 2017.

The Michigan market's net income increased $79 million to $326 million. Average loans decreased $146 million and 
average deposits decreased $1.1 billion. Net interest income increased $70 million to $727 million. An increase in loan income 
of $95 million was partially offset by a $23 million increase in deposit costs and a $1 million increase in allocated net FTP charges. 
The FTP allocation reflected an increase in funding charges mostly offset by increases in crediting rates on deposits as a result of 
higher short-term rates. The provision for credit losses increased $22 million to $30 million, primarily reflecting an increase in 
general Middle Market. Net credit-related charge-offs increased $8 million to $7 million, primarily reflecting an increase in general 
Middle Market. Including the Topic 606 proforma reduction of $13 million to the prior year, noninterest income decreased $15 
million and noninterest expenses increased $1 million. The decrease in noninterest income reflected decreases of $9 million in 
fiduciary income, $6 million in service charges on deposit accounts (proforma) and smaller decreases in several other categories, 
partially offset by a $3 million increase in card fees (proforma). Noninterest expenses were impacted by an $8 million increase in 
salaries and benefits expense, $6 million of net gains recognized in 2017 on sales of assets that did not repeat and smaller increases 
in other categories of noninterest expenses, mostly offset by a $14 million decrease in allocated corporate overhead.

The California market's net income increased $146 million to $375 million. Average loans increased $275 million and 
average deposits decreased $569 million. Net interest income increased $77 million to $788 million. An increase in loan income 
of $158 million was partially offset by a $23 million increase in deposit costs and a $58 million increase in allocated net FTP 
charges. The FTP allocation reflected increases in funding charges and in crediting rates on deposits as a result of higher short-
term rates. The provision for credit losses decreased $73 million to $31 million, primarily reflecting improved credit quality in 
most lines of business. Net credit-related charge-offs decreased $6 million to $27 million, with the largest decrease in Corporate 
Banking. Including the Topic 606 proforma reduction of $7 million to the prior year, noninterest income was unchanged and 
noninterest expenses increased $27 million. Noninterest income was impacted by a $4 million increase in card fees (proforma) 

F-13

 
 
and smaller increases in other categories of noninterest income, offset by decreases of $3 million each in service charges on deposit 
accounts  (proforma)  and  letter  of  credit  fees.  Noninterest  expenses  reflected  increases  of  $13  million  in  allocated  corporate 
overhead, $6 million in salaries and benefits expense, $4 million each in outside processing fee expense (proforma) and restructuring 
charges as well as smaller increases in other categories of noninterest expenses, partially offset by a $4 million decrease in FDIC 
insurance expense. Additionally, the increase in noninterest expenses reflected the impact of a $3 million benefit in 2017 due to 
a favorable litigation-related settlement. 

The Texas market's net income increased $54 million to $229 million. Average loans decreased $148 million and average 
deposits decreased $632 million. Net interest income increased $24 million to $475 million. An increase in loan income of $68 
million was partially offset by increases of $5 million in deposit costs and $40 million in allocated net FTP charges. The FTP 
allocation reflected increases in funding charges and in crediting rates on deposits as a result of higher short-term rates. The 
provision for credit losses was impacted by a $19 million decrease in provision benefit to $53 million, primarily due to improved 
credit quality and a large decrease in Energy loans in 2017. Net credit-related charge-offs decreased $34 million to $12 million, 
primarily reflecting decreases in Energy and general Middle Market. Including the Topic 606 proforma reduction of $6 million
to the prior year, noninterest income increased $5 million and noninterest expenses decreased $4 million. Noninterest income was 
primarily  impacted  by  a  $3  million  increase  in  card  fees  (proforma). The  decline  in  noninterest  expenses  primarily  reflected 
decreases of $4 million in allocated corporate overhead and $3 million in FDIC insurance expense, partially offset by a $2 million
increase in outside processing fee expense (proforma). 

Other Markets' net income increased $95 million to $280 million. Average loans increased $227 million and average 
deposits increased $267 million. Net interest income increased $36 million to $352 million. An increase in loan income of $70 
million was partially offset by a $13 million increase in deposit costs and a $21 million increase in allocated net FTP charges. The 
FTP allocation reflected an increase in funding charges as well as increases in crediting rates on deposits as a result of higher 
short-term rates. The provision for credit losses decreased $39 million to a $6 million benefit, with most of the decreases in 
Corporate Banking, Small Business as well as Technology and Life Sciences. Net credit-related charge-offs decreased $9 million
to $5 million, primarily reflecting decreases in Technology and Life Sciences as well as Small Business. Including the Topic 606 
proforma reduction of $92 million to the prior year, noninterest income increased $28 million and noninterest expenses increased 
$18 million. Noninterest income was primarily impacted by increases of $15 million in fiduciary income and $13 million in card 
fees (proforma). Noninterest expenses primarily reflected increases of $11 million in salaries and benefits expense and $10 million 
in allocated corporate overhead, partially offset by a $4 million decrease in outside processing fee expense (proforma). 

Net income for the Finance & Other category increased $118 million to $25 million, primarily reflecting the $120 million
change in discrete tax items and an increase in FTP revenue as a result of higher rates charged to the market segments under the 
Corporation's  internal  FTP  methodology,  partially  offset  by  a  $15  million  loss,  net  of  tax,  due  to  repositioning  the  securities 
portfolio.

The following table lists the Corporation's banking centers by geographic market segment. 

December 31
Michigan
Texas
California
Other Markets:
Arizona
Florida
Canada

Total Other Markets

Total

2018

2017

2016

193
122
96

17
7
1
25
436

194
122
97

17
7
1
25
438

209
127
97

17
7
1
25
458

F-14

BALANCE SHEET AND CAPITAL FUNDS ANALYSIS

ANALYSIS OF INVESTMENT SECURITIES AND LOANS

(in millions)
December 31
Investment securities available-for-sale:

2018

2017

2016

2015

2014

U.S. Treasury and other U.S. government agency securities $ 2,727
Residential mortgage-backed securities (a)
State and municipal securities
Corporate debt securities
Equity and other non-debt securities

Total investment securities available-for-sale

Investment securities held to maturity:

Residential mortgage-backed securities (a)

Total investment securities

Commercial loans
Real estate construction loans
Commercial mortgage loans
Lease financing
International loans:

Banks and other financial institutions
Commercial and industrial

Total international loans

Residential mortgage loans
Consumer loans:
Home equity
Other consumer

Total consumer loans
Total loans

9,318 (b)
—
—
—
12,045

— (b)

$ 12,045
$ 31,976
3,077
9,106
507

—
1,013
1,013
1,970

1,765
749
2,514
$ 50,163

$ 2,727
8,124
5
—
82
10,938

1,266
$ 12,204
$ 31,060
2,961
9,159
468

4
979
983
1,988

$ 2,779
7,872
7
—
129
10,787

1,582
$ 12,369
$ 30,994
2,869
8,931
572

2
1,256
1,258
1,942

$ 2,763
7,545
9
1
201
10,519

1,981
$ 12,500
$ 31,659
2,001
8,977
724

—
1,368
1,368
1,870

$

526
7,274
23
51
242
8,116

1,935
$ 10,051
$ 31,520
1,955
8,604
805

31
1,465
1,496
1,831

1,816
738
2,554
$ 49,173

1,800
722
2,522
$ 49,088

1,720
765
2,485
$ 49,084

1,658
724
2,382
$ 48,593

(a)  Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
(b)  Effective with the adoption of ASU 2017-12 “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging 
Activities” on January 1, 2018, the Corporation transferred residential mortgage-backed securities with a book value of approximately 
$1.3 billion from held-to-maturity to available-for-sale.

F-15

EARNING ASSETS

Loans

On a period-end basis, total loans increased $990 million to $50.2 billion at December 31, 2018 compared to $49.2 billion
at December 31, 2017. Average total loans increased $208 million to $48.8 billion in 2018, compared to $48.6 billion in 2017. 
The following tables provide information about the changes in the Corporation's average loan portfolio in 2018, compared to 2017.

(dollar amounts in millions)
Years Ended December 31
By Business Line:

General Middle Market
National Dealer Services
Energy
Technology and Life Sciences
Environmental Services
Entertainment

Total Middle Market
Corporate Banking
Mortgage Banker Finance
Commercial Real Estate
Small Business

Total Business Bank
Total Retail Bank
Total Wealth Management

Total loans

By Loan Type:
Commercial
Real estate construction loans
Commercial mortgage loans
Lease financing
International loans
Residential mortgage loans
Consumer loans:
Home equity
Other consumer

Total consumer loans
Total loans

By Geographic Market:
Michigan
California
Texas
Other Markets

Total loans

2018

2017

Change

Percent
Change

$

$

$

$

$

$

11,800
7,294
1,868
3,808
1,099
731
26,600
4,337
1,716
5,287
3,678
41,618
2,067
5,081
48,766

30,534
3,155
9,131
470
1,021
1,983

1,749
723
2,472
48,766

12,531
18,283
9,821
8,131
48,766

$

$

$

$

$

$

11,873
6,953
2,075
3,281
924
659
25,765
4,682
1,768
5,230
3,796
41,241
2,061
5,256
48,558

30,415
2,958
9,005
509
1,157
1,989

1,794
731
2,525
48,558

12,677
18,008
9,969
7,904
48,558

$

$

$

$

$

$

(73)
341
(207)
527
175
72
835
(345)
(52)
57
(118)
377
6
(175)
208

119
197
126
(39)
(136)
(6)

(45)
(8)
(53)
208

(146)
275
(148)
227
208

(1)%
5
(10)
16
19
11
3
(7)
(3)
1
(3)
1
—
(3)
— %

— %
7
1
(8)
(12)
—

(3)
(1)
(2)
— %

(1)%
2
(1)
3
— %

 Middle Market business lines generally serve customers with annual revenue between $20 million and $500 million. 
Within the Middle Markets business lines, the largest changes were due to Technology and Life Sciences as well as National 
Dealer Services, partially offset by Energy. Technology and Life Sciences serves two segments: (1) private equity and venture 
capital firms, referred to as equity fund services, and (2) companies that are typically owned by venture-capital firms, where 
significant equity is invested to create products and build companies around new intellectual property. The $527 million increase
in average Technology and Life Sciences loans primarily reflected growth in the equity fund services business. National Dealer 
Services provides floor plan inventory financing and commercial mortgages to auto dealerships. The $341 million increase in 
average National Dealer Services loans largely reflected the expansion of new and existing relationships. Customers in the Energy 
business line are primarily engaged in the oil and gas businesses. The $207 million decrease in average Energy loans primarily 
reflected Energy customers taking actions to adjust their cash flow and reduce their bank debt, including selling assets and raising 
capital, as well as improved operations. For more information on Energy loans, refer to "Energy Lending" in the "Risk Management" 
section of this financial review.

F-16

 
Corporate Banking generally serves customers with revenue over $500 million. The $345 million decrease in average 
Corporate Banking loans reflected continued pricing and credit discipline as well as an elevated number of customers taking 
advantage of favorable valuations to sell their businesses.

Investment Securities

(dollar amounts in millions)

Within 1 Year

1 - 5 Years

Maturity (a)

5 - 10 Years

After 10 Years

Total

Weighted
Average
Maturity

December 31, 2018

Amount

Yield

Amount

Yield

Amount

Yield

Amount

Yield

Amount

Yield

Years

U.S. Treasury and other U.S.

government agency securities

$

100

1.42% $ 2,627

2.34% $

—

—% $

—

—% $ 2,727

2.30%

2.3

Residential mortgage-backed
securities (b)

$
Total investment securities
(a)  Based on final contractual maturity.
(b) 

—

100

—

15

2.70

1,502

2.43

7,801

2.36

9,318

2.37

1.42% $ 2,642

2.34% $ 1,502

2.43% $ 7,801

2.36% $ 12,045

2.35%

19.7

15.8

Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.

Investment securities decreased $159 million to $12.0 billion at December 31, 2018, from $12.2 billion at December 31, 
2017, including a $57 million increase in net unrealized losses. Net unrealized losses on investment securities available-for-sale 
were $180 million at December 31, 2018, compared to net unrealized losses of $123 million at December 31, 2017. At December 31, 
2018, the weighted-average expected life of the Corporation's residential mortgage-backed securities portfolio was approximately 
3.5 years. On an average basis, investment securities decreased $397 million to $11.8 billion in 2018, compared to $12.2 billion
in 2017. The decrease was primarily due to an increase in net unrealized losses.

At the end of the third quarter 2018, the Corporation repositioned $1.3 billion of treasury securities by purchasing securities 
yielding approximately $4 million in additional interest per quarter. The loss taken on the securities sold ($15 million, net of tax) 
was offset by discrete tax benefits resulting from actions taken related to the Tax Cuts and Jobs Act.

Interest-Bearing Deposits with Banks and Other Short-Term Investments

 Interest-bearing deposits with banks primarily include deposits with the Federal Reserve Bank (FRB) and also include 
deposits with banks in developed countries or international banking facilities of foreign banks located in the United States. Interest-
bearing deposits with banks are mostly used to manage liquidity requirements of the Corporation. Interest-bearing deposits with 
banks decreased $1.2 billion to $3.2 billion at December 31, 2018. On an average basis, interest-bearing deposits with banks 
decreased $743 million to $4.7 billion in 2018, compared to $5.4 billion in 2017. 

Other short-term investments include federal funds sold, trading securities, money market investments and loans held-
for-sale. Substantially all trading securities are deferred compensation plan assets. Loans held-for-sale typically represent residential 
mortgage loans originated with management's intention to sell and, from time to time, other loans that are transferred to held-for-
sale. Other short-term investments increased $38 million to $134 million at December 31, 2018. On an average basis, other short-
term investments increased $42 million to $134 million in 2018.

DEPOSITS AND BORROWED FUNDS

At December 31, 2018, total deposits were $55.6 billion, a decrease of $2.3 billion, or 4 percent, compared to $57.9 
billion at December 31, 2017, reflecting a decrease of $3.4 billion, or 11 percent, in noninterest-bearing deposits, partially offset 
by an increase of $1.0 billion, or 4 percent, in interest-bearing deposits. The Corporation's average deposits and borrowed funds 
balances are detailed in the following table.

(dollar amounts in millions)
Years Ended December 31
Noninterest-bearing deposits
Money market and interest-bearing checking deposits
Savings deposits
Customer certificates of deposit
Foreign office time deposits
Total deposits
Short-term borrowings
Medium- and long-term debt
Total borrowed funds

2018

2017

Change

Percent
Change

$

$
$

$

29,241
22,378
2,199
2,092
25
55,935
62
5,842
5,904

$

$
$

$

31,013
21,585
2,133
2,471
56
57,258
277
4,969
5,246

$

$
$

$

(1,772)
793
66
(379)
(31)
(1,323)
(215)
873
658

(6)%
4
3
(15)
(56)

(2)%
(78)%
18
13 %

Average deposits decreased $1.3 billion, or 2 percent, to $55.9 billion in 2018, compared to $57.3 billion in 2017, reflecting 
a decrease of $1.8 billion, or 6 percent, in noninterest-bearing deposits, partially offset by an increase of $449 million, or 2 percent, 
in interest-bearing deposits. The decrease is primarily due to more efficient cash management by customers. The largest decreases 

F-17

 
were reflected in general Middle Market (driven by a $925 million decline in Municipalities), Commercial Real Estate ($598 
million) and Corporate Banking ($454 million), partially offset by increases in Finance ($699 million) and Technology and Life 
Sciences ($418 million). By market, average deposits decreased in Michigan ($1.1 billion), Texas ($632 million) and in California 
($569 million), partially offset by increases in Finance and Other ($662 million) and Other Markets ($267 million). 

Short-term borrowings totaled $44 million at December 31, 2018, an increase of $34 million compared to $10 million
at December 31, 2017. Short-term borrowings primarily include federal funds purchased, short-term FHLB advances and securities 
sold under agreements to repurchase. Average short-term borrowings decreased $215 million, to $62 million in 2018, compared 
to $277 million in 2017. 

Total medium- and long-term debt at December 31, 2018 increased $1.8 billion to $6.5 billion, compared to $4.6 billion
at December 31, 2017. The increase in medium- and long-term debt reflected a $1.0 billion increase in long-term FHLB advances 
during the first quarter 2018 and an issuance of $850 million in medium-term notes during the third quarter 2018. The Corporation 
uses medium- and long-term debt, which includes long-term FHLB advances as well as medium-term and subordinated notes, to 
provide funding to support earning assets, liquidity and regulatory capital. Average medium- and long-term debt increased $873 
million, or 18 percent, to $5.8 billion in 2018, compared to $5.0 billion in 2017. 

On February 1, 2019, the Corporation issued $350 million of 4.00% senior notes maturing in 2029, swapped to floating 
rate at 30-day LIBOR plus 129 basis points. Proceeds will be used for general corporate purposes, which may include working 
capital,  investments  in  or  advances  to  existing  or  future  subsidiaries,  and  repurchases,  maturities  and  redemptions  of  other 
outstanding securities. Pending such use, the net proceeds will be invested for the short term.

Further information on medium- and long-term debt is provided in Note 12 to the consolidated financial statements.

CAPITAL

Total shareholders' equity decreased $456 million to $7.5 billion at December 31, 2018, compared to $8.0 billion at 

December 31, 2017. The following table presents a summary of changes in total shareholders' equity in 2018.

(in millions)
Balance at January 1, 2018
Cumulative effect of change in accounting principles
Net income
Cash dividends declared on common stock
Purchase of common stock
Other comprehensive loss:

Investment securities available-for-sale
Defined benefit and other postretirement plans

Total other comprehensive loss

Issuance of common stock under employee stock plans
Share-based compensation
Balance at December 31, 2018

$

$

7,963
15
1,235
(309)
(1,329)

(159)
43
48
7,507

$

(38)
(121)

Further information about other comprehensive loss is provided in the Consolidated Statements of Comprehensive Income 

and Note 14 to the consolidated financial statements.

In July 2018, the Board of Governors of the Federal Reserve System issued a statement announcing that, consistent with 
the recently enacted Economic Growth, Regulatory Relief and Consumer Protection Act (EGRRCPA), bank holding companies 
with less than $100 billion in total assets are no longer subject to certain regulations and reporting requirements, such as Dodd-
Frank Act  stress  testing,  Comprehensive  Capital Analysis  and  Review  (CCAR)  and  the  Liquidity  Coverage  Ratio,  effective 
immediately. EGRRCPA also revised the definition of High Volatility Commercial Real Estate (HVCRE) exposure for regulatory 
capital calculations. The Corporation adopted the revised HVCRE definition effective September 30, 2018. The resulting change 
in regulatory capital ratios was not significant.

The Corporation expects to return excess capital to shareholders with a target of reaching a common equity Tier 1 capital 
ratio of 9.5 percent to 10 percent by the end of 2019. The timing and ultimate amount of future distributions will be subject to 
various factors including financial performance, capital position and market conditions.

During 2018, the Corporation repurchased 14.8 million shares for a total $1.3 billion. This included $149 million in the 
first quarter and $169 million in the second quarter repurchased under the Corporation's 2017 capital plan. The Board of Directors 
(the Board) approved the repurchase of $500 million in each of the third and fourth quarters of 2018. The Corporation facilitated 
the third and fourth quarter repurchases through an accelerated share repurchase program due to volume and timing execution 
constraints.

F-18

 
In January 2019, the Board authorized the repurchase of up to an additional 15 million shares of Comerica Incorporated 
outstanding common stock. This action is in addition to the 4.7 million shares remaining at December 31, 2018 under the Board's 
prior authorizations for the equity repurchase program. The number of shares ultimately repurchased during 2019 will depend on 
many factors, including capital needs of the Corporation and market conditions.  Additionally, repurchases of common stock under 
the authorization may include open market purchases, privately negotiated transactions or accelerated repurchase programs. There 
is no expiration date for the Corporation's share repurchase program.

The Board approved a 4-cent increase in the quarterly dividend to $0.34 per share in April 2018 and further increased 
the divided 26 cents to $0.60 per share in July 2018. In January 2019, the Board approved a 7-cent increase in the quarterly dividend 
to $0.67 per share, effective for the dividend payable on April 1, 2019.

The following table summarizes the Corporation’s equity repurchase activity for the year ended December 31, 2018.

(shares in thousands)
First quarter 2018
Second quarter 2018
Third quarter 2018
Fourth quarter 2018

Total 2018

Total Number of Shares and 
Warrants Purchased as 
Part of Publicly Announced 
Repurchase Plans or 
Programs (a)

Remaining
Repurchase
Authorization (b)

1,565
1,755
5,137
6,316
14,773

8,714
6,952
11,706 (d)
4,707
4,707

Total Number
of Shares
Purchased (c)
1,674
1,759
5,143
6,318
14,894

$

$

Average Price
Paid Per 
Share

95.16
96.32
97.32
79.16
89.26

(a)  The Corporation made no repurchases of warrants under the repurchase program during the year ended December 31, 2018. Upon exercise 
of a warrant, the number of shares with a value equal to the aggregate exercise price is withheld from an exercising warrant holder as 
payment (known as a "net exercise provision"). During the year ended December 31, 2018, the Corporation withheld the equivalent of 
approximately 309,000 shares to cover an aggregate of $9 million in exercise price and issued approximately 585,000 shares to the exercising 
warrant holders. Shares withheld in connection with the net exercise provision are not included in the total number of shares or warrants 
purchased in the above table. All unexercised warrants expired in fourth quarter 2018.

(b)  Maximum number of shares and warrants that may yet be purchased under the publicly announced plans or programs. In January 2019, 

the Board rescinded its warrant repurchase authorization following the expiration of all unexercised warrants.

(c)  Includes approximately 121,000 shares purchased pursuant to deferred compensation plans and shares purchased from employees to pay 
for  taxes  related  to  restricted  stock  vesting  under  the  terms  of  an  employee  share-based  compensation  plan  during  the  year  ended 
December 31, 2018. These transactions are not considered part of the Corporation's repurchase program.

(d)  Includes July 24, 2018 equity repurchase authorization for an additional 10 million shares.

The U.S. adoption of the Basel III regulatory capital framework (Basel III) became effective for the Corporation on 
January 1, 2015. Basel III included a more stringent definition of capital and introduced a common equity Tier 1 (CET1) capital 
requirement; set forth two comprehensive methodologies for calculating risk-weighted assets (RWA), a standardized approach 
and an advanced approach; introduced two capital buffers, a conservation buffer and a countercyclical buffer (applicable to advanced 
approach entities); established a supplemental leverage ratio (applicable to advanced approach entities); and set out minimum 
capital ratios and overall capital adequacy standards. The capital conservation buffer is being phased in and will be fully implemented 
on January 1, 2019.

Under Basel III, CET1 capital predominantly includes common shareholders' equity, less certain deductions for goodwill, 
intangible  assets  and  deferred  tax  assets  that  arise  from  net  operating  losses  and  tax  credit  carry-forwards. Additionally,  the 
Corporation has elected to permanently exclude capital in accumulated other comprehensive income (AOCI) related to debt and 
equity securities classified as available-for-sale as well as for defined benefit postretirement plans from CET1, an option available 
to standardized approach entities under Basel III. Tier 1 capital incrementally includes noncumulative perpetual preferred stock. 
Tier 2 capital includes Tier 1 capital as well as subordinated debt qualifying as Tier 2 and qualifying allowance for credit losses. 
The ultimate treatment for certain specific deductions and adjustments is yet to be determined pending the finalization of a proposal 
by banking regulators to simplify certain aspects of the capital rules. In addition, in December 2018, the federal banking regulators 
adopted rules that would permit bank holding companies and banks to phase in, for regulatory capital purposes, the day-one impact 
of the new current expected credit loss accounting rule on retained earnings over a period of three years. The Corporation does 
not expect the proposed rule to have a significant impact on its capital ratios.

The Corporation computes RWA using the standardized approach. Under the standardized approach, RWA is generally 
based on supervisory risk-weightings which vary by counterparty type and asset class. Under the Basel III standardized approach, 
capital is required for credit risk RWA, to cover the risk of unexpected losses due to failure of a customer or counterparty to meet 
its financial obligations in accordance with contractual terms; and if trading assets and liabilities exceed certain thresholds, capital 
is also required for market risk RWA, to cover the risk of losses due to adverse market movements or from position-specific factors.

F-19

 
 
The following table presents the minimum ratios required to be considered "adequately capitalized."

Common equity tier 1 capital to risk-weighted assets
Tier 1 capital to risk-weighted assets
Total capital to risk-weighted assets
Capital conservation buffer (a)
Tier 1 capital to adjusted average assets (leverage ratio)
(a)  In addition to the minimum risk-based capital requirements, the Corporation is required to maintain a minimum capital conservation buffer 
in the form of common equity, in order to avoid restrictions on capital distributions and discretionary bonuses. The required amount of the 
capital conservation buffer is being phased in and ultimately increases to 2.5% on January 1, 2019. The capital conservation buffer indicated 
above is as of December 31, 2018.

4.500%
6.000
8.000
1.875
4.000

The Corporation's capital ratios exceeded minimum regulatory requirements as follows:

December 31, 2018

December 31, 2017

(dollar amounts in millions)
Common equity tier 1 and tier 1 risk-based
Total risk-based
Leverage
Common equity
Tangible common equity (a)
Risk-weighted assets
(a)  See Supplemental Financial Data section for reconcilements of non-GAAP financial measures.

Capital/Assets
7,470
$
8,855
7,470
7,507
6,866
67,047

Ratio

11.14% $
13.21
10.51
10.60
9.78

Capital/Assets
7,773
9,211
7,773
7,963
7,320
66,575

Ratio

11.68%
13.84
10.89
11.13
10.32

At December 31, 2018, the Corporation and its U.S. banking subsidiaries exceeded the capital ratios required for an 
institution  to  be  considered  “well  capitalized”  by  the  standards  developed  under  the  Federal  Deposit  Insurance  Corporation 
Improvement Act of 1991. Refer to Note 20 to the consolidated financial statements for further discussion of regulatory capital 
requirements and capital ratio calculations.

F-20

RISK MANAGEMENT

The Corporation assumes various types of risk as a result of conducting business in the normal course. The Corporation's 
enterprise risk framework provides a process for identifying, measuring, controlling and managing these risks. This framework 
incorporates a risk assessment process, a collection of risk committees that manage the Corporation's major risk elements, and a 
risk appetite statement that outlines the levels and types of risks the Corporation accepts. The Corporation continuously enhances 
its enterprise risk framework with additional processes, tools and systems designed to not only provide management with deeper 
insight into the various existing and emerging risks in accordance with its appetite for risk, but also to improve the Corporation's 
ability to control those risks and ensure that appropriate consideration is received for the risks taken.

The Corporation’s front line employees, the first line of defense, are responsible for the day-to-day management of risks 
including the identification, assessment, measurement and control of risks encountered as a part of the normal course of business. 
Risks are further monitored, measured and controlled by the second line of defense, comprised of specialized risk managers for 
each of the major risk categories who provide oversight, effective challenge and guidance for the risk management activities of 
the organization. The majority of these risk managers reside in the Enterprise Risk Division. The Enterprise Risk Division, led by 
the Chief Risk Officer, is responsible for designing and managing the Corporation’s enterprise risk framework and ensures effective 
risk management oversight. Risk management committees serve as a point of review and escalation for those risks which may 
have risk interdependencies or where risk levels may be nearing the limits outlined in the Corporation’s risk appetite statement. 
These  committees  comprise  senior  and  executive  management  that  represent  views  from  both  the  lines  of  business  and  risk 
management. Internal Audit, the third line of defense, monitors and assesses the overall effectiveness of the risk management 
framework on an ongoing basis and provides an independent assessment of the Corporation’s ability to manage and control risk 
to management and the Audit Committee of the Board.

The Enterprise-Wide Risk Management Committee, chaired by the Chief Risk Officer, is established by the Enterprise 
Risk Committee of the Board, and is responsible for governance over the risk management framework, providing oversight in 
managing the Corporation's aggregate risk position and reporting on the comprehensive portfolio of risks as well as the potential 
impact these risks can have on the Corporation's risk profile and resulting capital level. Capital is the common denominator of 
risk. The Enterprise-Wide Risk Management Committee is principally composed of senior officers and executives representing 
the different risk areas and business units who are appointed by the Chairman and Chief Executive Officer of the Corporation.

The Board's Enterprise Risk Committee meets quarterly and is chartered to assist the Board in promoting the best interests 
of the Corporation by overseeing policies, procedures and risk practices relating to enterprise-wide risk and ensuring compliance 
with bank regulatory obligations. Members of the Enterprise Risk Committee are selected such that the committee comprises 
individuals whose experiences and qualifications can lead to broad and informed views on risk matters facing the Corporation 
and the financial services industry. These include, but are not limited to, existing and emerging risk matters related to credit, 
market, liquidity, operational, compliance and strategic conditions. A comprehensive risk report is submitted to the Enterprise 
Risk Committee each quarter providing management's view of the Corporation's aggregate risk position.

Further discussion and analyses of each major risk area are included in the following sub-sections of the Risk Management 

section in this financial review.

CREDIT RISK

Credit risk represents the risk of loss due to failure of a customer or counterparty to meet its financial obligations in 
accordance with contractual terms. The governance structure is administered through the Strategic Credit Committee. The Strategic 
Credit Committee is chaired by the Chief Credit Officer and approves recommendations to address credit risk matters through 
credit policy, credit risk management practices and required credit risk actions. The Strategic Credit Committee also ensures a 
comprehensive reporting of credit risk levels and trends, including exception levels, along with identification and mitigation of 
emerging risks. In order to facilitate the corporate credit risk management process, various other corporate functions provide the 
resources  for  the  Strategic  Credit  Committee  to  carry  out  its  responsibilities.  The  Corporation  manages  credit  risk  through 
underwriting  and  periodically  reviewing  and  approving  its  credit  exposures  using  approved  credit  policies  and  guidelines. 
Additionally, the Corporation manages credit risk through loan portfolio diversification, limiting exposure to any single industry, 
customer or guarantor, and selling participations and/or syndicating credit exposures above those levels it deems prudent to third 
parties.

The Credit Division manages credit policy and provides the resources to manage the line of business transactional credit 
risk, assuring that all exposure is risk rated according to the requirements of the credit risk rating policy and providing business 
segment reporting support as necessary. The Enterprise Risk Division provides credible and well-documented challenge of overall 
portfolio  credit  risk,  and  other  credit-related  attributes  of  the  Corporation's  loan  portfolios,  with  a  particular  emphasis  on all 
attendant modeled results. The Corporation's Asset Quality Review function, a division of Internal Audit, audits the accuracy of 
internal risk ratings that are assigned by the lending and credit groups. The Special Assets Group is responsible for managing the 
recovery process on distressed or defaulted loans and loan sales.

F-21

Portfolio Risk Analytics, within the Credit Division, provides comprehensive reporting on portfolio credit risk levels and 
trends, continuous assessment and verification of risk rating models, quarterly calculation of the allowance for loan losses and the 
allowance for credit losses on lending-related commitments, and calculation of economic credit risk capital.

ANALYSIS OF THE ALLOWANCE FOR LOAN LOSSES

(dollar amounts in millions)
Years Ended December 31
Balance at beginning of year
Loan charge-offs:
Commercial
Commercial mortgage
Lease financing
International
Residential mortgage
Consumer

Total loan charge-offs

Recoveries:

Commercial
Real estate construction
Commercial mortgage
Lease financing
International
Residential mortgage
Consumer

Total recoveries
Net loan charge-offs
Provision for loan losses
Foreign currency translation adjustment
Balance at end of year
Net loan charge-offs during the year as a

percentage of average loans outstanding during
the year

$

Allowance for Credit Losses

2018

2017

2016

2015

2014

$

712

$

730

$

634

$

594

$

95
3
—
1
—
4
103

44
—
2
—
1
1
4
52
51
11
(1)
671

$

133
3
1
6
—
6
149

37
1
9
—
3
1
6
57
92
73
1
712

$

181
3
—
23
—
7
214

43
—
20
—
—
1
4
68
146
241
1
730

$

139
3
1
14
1
10
168

33
1
21
—
—
2
11
68
100
142
(2)
634

$

598

59
22
—
6
2
13
102

34
4
28
2
—
4
5
77
25
22
(1)
594

0.11%

0.19%

0.30%

0.21%

0.05%

The allowance for credit losses includes both the allowance for loan losses and the allowance for credit losses on lending-
related commitments. The allowance for loan losses represents management's assessment of probable, estimable losses inherent 
in the Corporation's loan portfolio. The allowance for credit losses on lending-related commitments, included in accrued expenses 
and other liabilities on the Consolidated Balance Sheets, provides for probable losses inherent in lending-related commitments, 
including unused commitments to extend credit and standby letters of credit. Refer to Note 1 to the consolidated financial statements 
for a discussion of the methodology used in the determination of the allowance for credit losses.

An analysis of the coverage of the allowance for loan losses is provided in the following table.

Years Ended December 31
Allowance for loan losses as a percentage of total loans at end of year
Allowance for loan losses as a multiple of total nonperforming loans at end of year
Allowance for loan losses as a multiple of total net loan charge-offs for the year

2018

2017

2016

1.34%
2.9x
13.1x

1.45%
1.7x
7.7x

1.49%
1.2x
5.0x

The allowance for loan losses was $671 million at December 31, 2018, compared to $712 million at December 31, 2017, 
a decrease of $41 million, or 6 percent. The decrease in the allowance for loan losses reflected continued improvement in credit 
quality of the portfolio, including a $683 million decline in criticized loans and a $41 million decline in net loan charge-offs.

F-22

ALLOCATION OF THE ALLOWANCE FOR LOAN LOSSES

(dollar amounts in millions) Allocated
Allowance
December 31

Allowance
Ratio (a) % (b)

Allocated
Allowance % (b)

Allocated
Allowance % (b)

Allocated
Allowance % (b)

Allocated
Allowance % (b)

2018

2017

2016

2015

2014

Business loans

Commercial

Real estate construction

Commercial mortgage

Lease financing

International

Total business loans

Retail loans

Residential mortgage

Consumer

Total retail loans

$

492

19

99

4

13

627

9

35

44

Total loans

$

671

1.54% 64% $
0.62

6

1.08

0.70

1.31

1.37

0.43

1.40

18

1

2

91

4

5

0.97
1.34% 100% $

9

521

63% $

547

63% $

448

65% $

19

91

12

18

661

13

38

51

6

19

1

2

91

4

5

9

21

93

5

16

682

11

37

48

6

18

1

3

91

4

5

9

12

93

3

23

579

14

41

55

4

18

1

3

91

4

5

9

379

20

120

2

13

534

14

46

60

65%

4

18

1

3

91

4

5

9

712

100% $

730

100% $

634

100% $

594

100%

(a)  Allocated allowance as a percentage of related loans outstanding.
(b)  Loans outstanding as a percentage of total loans.

The  allowance  for  credit  losses  on  lending-related  commitments  includes  specific  allowances,  based  on  individual 
evaluations of certain letters of credit in a manner consistent with business loans, and allowances based on the pool of the remaining 
letters of credit and all unused commitments to extend credit within each internal risk rating.

The allowance for credit losses on lending-related commitments was $30 million at December 31, 2018 compared to $42 
million at December 31, 2017. An analysis of changes in the allowance for credit losses on lending-related commitments is presented 
below.

(dollar amounts in millions)
Years Ended December 31
Balance at beginning of year
Charge-offs on lending-related commitments (a)
Provision for credit losses on lending-related commitments
Balance at end of year
(a)  Charge-offs result from the sale of unfunded lending-related commitments.

2018

$

$

42
—
(12)
30

2017

2016

2015

2014

$

$

41
—
1
42

$

$

45
(11)
7
41

$

$

41
(1)
5
45

$

$

36
—
5
41

For additional information regarding the allowance for credit losses, refer to the "Critical Accounting Policies" section 

of this financial review and Notes 1 and 4 to the consolidated financial statements.

Nonperforming Assets

Nonperforming assets include loans on nonaccrual status, troubled debt restructured loans (TDRs) which have been 
renegotiated to less than the original contractual rates (reduced-rate loans) and foreclosed property. TDRs include performing and 
nonperforming loans. Nonperforming TDRs are either on nonaccrual or reduced-rate status.

F-23

SUMMARY OF NONPERFORMING ASSETS AND PAST DUE LOANS

(dollar amounts in millions)
December 31
Nonaccrual loans:
Business loans:
Commercial
Real estate construction
Commercial mortgage
Lease financing
International

Total nonaccrual business loans
Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer
Total consumer
Total nonaccrual retail loans

Total nonaccrual loans
Reduced-rate loans
Total nonperforming loans
Foreclosed property
Total nonperforming assets
Gross interest income that would have been recorded 
had the nonaccrual and reduced-rate loans performed 
in accordance with original terms

Interest income recognized
Nonperforming loans as a percentage of total loans
Loans past due 90 days or more and still accruing
Loans past due 90 days or more and still accruing as

a percentage of total loans

2018

2017

2016

2015

2014

$

$

$

$

$

$

$

$

141
—
20
2
3
166

36

19
—
19
55
221
8
229
1
230

19
4
0.46%
16

0.03%

$

$

$

$

309
—
31
4
6
350

31

21
—
21
52
402
8
410
5
415

31
7
0.83%
35

0.07%

$

$

$

$

445
—
46
6
14
511

39

28
4
32
71
582
8
590
17
607

38
6
1.20%
19

0.04%

$

$

$

$

238
1
60
6
8
313

27

27
—
27
54
367
12
379
12
391

27
5
0.77%
17

0.03%

109
2
95
—
—
206

36

30
1
31
67
273
17
290
10
300

25
6
0.60%
5

0.01%

Nonperforming assets decreased $185 million to $230 million at December 31, 2018, from $415 million at December 31, 
2017. The decrease in nonperforming assets primarily reflected a $168 million decrease in nonaccrual commercial loans, with the 
largest decreases in general Middle Market, Energy and Corporate Banking. Nonperforming assets were 0.46 percent of total loans 
and foreclosed property at December 31, 2018, compared to 0.84 percent at December 31, 2017.

The following table presents a summary of TDRs at December 31, 2018 and 2017.

(in millions)
December 31
Nonperforming TDRs:
Nonaccrual TDRs
Reduced-rate TDRs

2018

2017

Total nonperforming TDRs

182
8
190
123
Performing TDRs (a)
Total TDRs
313
(a)  TDRs that do not include a reduction in the original contractual interest rate which are performing in accordance with their modified terms.

73
8
81
101
182

$

$

$

$

At  December 31,  2018,  nonaccrual  and  performing  TDRs  included  $38  million  and  $46  million  of  Energy  loans, 

respectively, compared to $82 million and $43 million, respectively at December 31, 2017.

F-24

The following table presents a summary of changes in nonaccrual loans.

(in millions)
Years Ended December 31
Balance at beginning of period
Loans transferred to nonaccrual (a)
Nonaccrual loan gross charge-offs
Loans transferred to accrual status (a)
Nonaccrual loans sold
Payments/other (b)
Balance at end of period
(a)  Based on an analysis of nonaccrual loans with book balances greater than $2 million.
(b)  Includes net changes related to nonaccrual loans with balances less than $2 million, payments on nonaccrual loans with book balances 

582
297
(149)
—
(40)
(288)
402

402
197
(103)
(6)
(39)
(230)
221

2018

2017

$

$

$

$

greater than $2 million and transfers of nonaccrual loans to foreclosed property.

There were 32 borrowers with balances greater than $2 million transferred to nonaccrual status in 2018, a decrease of 6

when compared to 38 in 2017.

The following table presents the composition of nonaccrual loans by balance and the related number of borrowers at 

December 31, 2018 and 2017.

(dollar amounts in millions)
Under $2 million
$2 million - $5 million
$5 million - $10 million
$10 million - $25 million
Greater than $25 million
Total

2018

2017

Number of
Borrowers

Balance

Number of
Borrowers

Balance

799
14
10
2
—
825

$

$

78
41
69
33
—
221

939
16
12
8
1
976

$

$

85
47
93
130
47
402

The following table presents a summary of nonaccrual loans at December 31, 2018 and loans transferred to nonaccrual 
and net loan charge-offs for the year ended December 31, 2018, based on North American Industry Classification System (NAICS) 
categories.

December 31, 2018

Year Ended December 31, 2018

(dollar amounts in millions)

$

Nonaccrual Loans

Loans Transferred to
Nonaccrual (a)

Industry Category
Mining, Quarrying and Oil & Gas Extraction
Residential Mortgage
Manufacturing
Health Care & Social Assistance
Services
Contractors
Real Estate & Home Builders
Wholesale Trade
Information & Communication
Other (b)
Total
(a)  Based on an analysis of nonaccrual loans with book balances greater than $2 million.
(b)  Consumer, excluding residential mortgage and certain personal purpose nonaccrual loans and net charge-offs, is included in the Other 

Net Loan Charge-Offs
(Recoveries)
9
—
19
(1)
10
(2)
2
13
1
—
51

23% $
16
15
8
6
6
4
3
2
17
100% $

15% $
5
45
7
10
—
2
10
3
3

16%
—
37
(1)
20
(3)
4
25
2
—
100%

50
36
33
18
14
13
8
7
5
37
221

30
10
91
14
19
—
3
19
5
6
197

100% $

$

category.

Loans past due 90 days or more and still accruing interest generally represent loans that are well collateralized and in the 
process of collection. Loans past due 90 days or more decreased $19 million to $16 million at December 31, 2018, compared to 
$35 million at December 31, 2017. Loans past due 30-89 days decreased $169 million to $133 million at December 31, 2018, 
compared to $302 million at December 31, 2017. An aging analysis of loans included in Note 4 to the consolidated financial 
statements provides further information about the balances comprising past due loans.

F-25

The following table presents a summary of total criticized loans. The Corporation's criticized list is consistent with the 
Special Mention, Substandard and Doubtful categories defined by regulatory authorities. Criticized loans with balances of $2 
million or more on nonaccrual status or loans with balances of $1 million or more whose terms have been modified in a TDR are 
individually subjected to quarterly credit quality reviews, and the Corporation may establish specific allowances for such loans. 
A table of loans by credit quality indicator included in Note 4 to the consolidated financial statements provides further information 
about the balances comprising total criticized loans.

(dollar amounts in millions)
December 31
Total criticized loans
As a percentage of total loans

2018

2017

$

1,548

$

3.1%

2,231

4.5%

The $683 million decrease in criticized loans in the year ended December 31, 2018 included decreases of $303 million

in Energy and $159 million in general Middle Market. 

The following table presents a summary of changes in foreclosed property.

(in millions)
Years Ended December 31
Balance at beginning of period
Acquired in foreclosure
Write-downs
Foreclosed property sold (a)
Balance at end of period
(a)   Net gain on foreclosed property sold

2018

2017

5
3
—
(7)
1
1

$

$
$

17
8
(1)
(19)
5
3

$

$
$

For further information regarding the Corporation's nonperforming assets policies and impaired loans, refer to Note 1

and Note 4 to the consolidated financial statements.

Concentration of Credit Risk

Concentrations of credit risk may exist when a number of borrowers are engaged in similar activities, or activities in the 
same geographic region, and have similar economic characteristics that would cause them to be similarly impacted by changes in 
economic or other conditions. The Corporation has a concentration of credit risk with the automotive industry. All other industry 
concentrations, as defined by management, individually represented less than 10 percent of total loans at December 31, 2018. 

The following table presents a summary of loans outstanding to companies related to the automotive industry.

(in millions)
December 31
Production:
Domestic
Foreign

Total production

Dealer:

Floor plan
Other

Total dealer
Total automotive

2018

2017

Loans
Outstanding

Percent of
Total Loans

Loans
Outstanding

Percent of
Total Loans

$

$

946
385
1,331

4,678
3,419
8,097
9,428

$

2.7%

16.1%
18.8% $

1,007
337
1,344

4,359
3,233
7,592
8,936

2.7%

15.5%
18.2%

Substantially all dealer loans are in the National Dealer Services business line. Loans in the National Dealer Services 
business  line  primarily  include  floor  plan  financing  and  other  loans  to  automotive  dealerships.  Floor  plan  loans,  included  in 
commercial loans in the Consolidated Balance Sheets, totaled $4.7 billion at December 31, 2018, an increase of $319 million
compared to $4.4 billion at December 31, 2017. At December 31, 2018 other loans in the National Dealer Services business line 
totaled $3.4 billion, including $2.0 billion of owner-occupied commercial real estate mortgage loans, compared to $3.2 billion, 
including $1.9 billion of owner-occupied commercial real estate mortgage loans, at December 31, 2017. Automotive lending also 
includes  loans  to  borrowers  involved  with  automotive  production,  primarily Tier  1  and Tier  2  suppliers.  Loans  to  borrowers 
involved with automotive production totaled $1.3 billion at both December 31, 2018 and 2017.

Dealer loans, as shown in the table above, totaled $8.1 billion at December 31, 2018, of which $4.7 billion, or 60 percent, 
were to foreign franchises, and $2.3 billion, or 29 percent, were to domestic franchises. Other dealer loans, totaling $844 million, 

F-26

or 11 percent, at December 31, 2018, include obligations where a primary franchise was indeterminable, such as loans to large 
public dealership consolidators and rental car, leasing, heavy truck and recreation vehicle companies.

There were $4 million of nonaccrual loans to automotive borrowers at December 31, 2018 and none at December 31, 

2017. There was $5 million of automotive net loan charge-offs in 2018 and none in 2017. 

For further information regarding significant group concentrations of credit risk, refer to Note 5 to the consolidated 

financial statements.

Commercial Real Estate Lending

At December 31, 2018, the Corporation's commercial real estate portfolio represented 24 percent of total loans. The 

following table summarizes the Corporation's commercial real estate loan portfolio by loan category.

(in millions)
December 31
Real estate construction loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction loans
Commercial mortgage loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage loans
(a)  Primarily loans to real estate developers.
(b)  Primarily loans secured by owner-occupied real estate.

2018

2017

$

$

$

$

2,687
390
3,077

1,743
7,363
9,106

$

$

$

$

2,630
331
2,961

1,831
7,328
9,159

The Corporation limits risk inherent in its commercial real estate lending activities by monitoring borrowers directly 
involved  in  the  commercial  real  estate  markets  and  adhering  to  conservative  policies  on  loan-to-value  ratios  for  such  loans. 
Commercial  real  estate  loans,  consisting  of  real  estate  construction  and  commercial  mortgage  loans,  totaled  $12.2  billion  at 
December 31, 2018, of which $4.4 billion, or 36 percent, were to borrowers in the Commercial Real Estate business line, which 
includes loans to real estate developers, an increase of $63 million compared to December 31, 2017. The remaining $7.8 billion, 
or 64 percent, of commercial real estate loans in other business lines consisted primarily of owner-occupied commercial mortgages, 
which bear credit characteristics similar to non-commercial real estate business loans.

The  real  estate  construction  loan  portfolio  primarily  contains  loans  made  to  long-time  customers  with  satisfactory 
completion experience. Credit quality in the real estate construction loan portfolio was strong, with criticized loans of $31 million
and $4 million at December 31, 2018 and 2017, respectively. There were no net charge-offs in 2018 and net recoveries of $1 
million in 2017.

Commercial mortgage loans are loans where the primary collateral is a lien on any real property and are primarily loans 
secured by owner occupied real estate. Real property is generally considered primary collateral if the value of that collateral 
represents more than 50 percent of the commitment at loan approval. Loans in the commercial mortgage portfolio generally mature 
within three to five years. Criticized commercial mortgage loans in the Commercial Real Estate business line totaled $61 million 
and $72 million at December 31, 2018 and December 31, 2017, respectively. In other business lines, $206 million and $229 million 
of commercial mortgage loans were criticized at December 31, 2018 and 2017, respectively. Commercial mortgage loan net charge-
offs were $1 million in 2018, compared to net recoveries of $6 million in 2017.

Residential Real Estate Lending

At December 31, 2018, residential real estate loans represented 7 percent of total loans. The following table summarizes 

the Corporation's residential mortgage and home equity loan portfolios by geographic market.

(dollar amounts in millions) 
December 31
Geographic market:

Michigan
California
Texas
Other Markets

Total

2018

2017

Residential
Mortgage 
Loans

% of
Total

Home
Equity 
Loans

% of
Total

Residential
Mortgage 
Loans

% of
Total

Home
Equity 
Loans

% of
Total

$

$

406
993
310
261
1,970

21% $
50
16
13
100% $

650
710
346
59
1,765

37% $
40
20
3

100% $

387
1,023
297
281
1,988

19% $
52
15
14
100% $

705
718
335
58
1,816

39%
40
18
3
100%

F-27

Residential real estate loans, which consist of traditional residential mortgages and home equity loans and lines of credit, 
totaled $3.7 billion at December 31, 2018. The residential real estate portfolio is principally located within the Corporation's 
primary geographic markets. Substantially all residential real estate loans past due 90 days or more are placed on nonaccrual status, 
and substantially all junior lien home equity loans that are current or less than 90 days past due are placed on nonaccrual status if 
full collection of the senior position is in doubt. At no later than 180 days past due, such loans are charged off to current appraised 
values less costs to sell.

Residential mortgages totaled $2.0 billion at December 31, 2018, and were primarily larger, variable-rate mortgages 
originated  and  retained  for  certain  private  banking  relationship  customers.  Of  the  $2.0  billion  of  residential  mortgage  loans 
outstanding,  $36  million  were  on  nonaccrual  status  at  December 31,  2018. The  home  equity  portfolio  totaled  $1.8  billion  at 
December 31, 2018, of which $1.6 billion was outstanding under primarily variable-rate, interest-only home equity lines of credit, 
$123 million were in amortizing status and $36 million were closed-end home equity loans. Of the $1.8 billion of home equity 
loans outstanding, $19 million were on nonaccrual status at December 31, 2018. A majority of the home equity portfolio was 
secured by junior liens at December 31, 2018. 

Energy Lending

The Corporation has a portfolio of Energy loans that are included primarily in commercial loans in the Consolidated 
Balance  Sheets.  Customers  in  the  Corporation's  Energy  business  line  (approximately  170  relationships)  are  engaged  in  three 
segments of the oil and gas business: exploration and production (E&P), midstream and energy services. E&P generally includes 
such activities as searching for potential oil and gas fields, drilling exploratory wells and operating active wells. Commitments to 
E&P borrowers are generally subject to semi-annual borrowing base re-determinations based on a variety of factors including 
updated prices (reflecting market and competitive conditions), energy reserve levels and the impact of hedging. The midstream 
sector  is  generally  involved  in  the  transportation,  storage  and  marketing  of  crude  and/or  refined  oil  and  gas  products.  The 
Corporation's energy services customers provide products and services primarily to the E&P segment. 

The following table summarizes information about the Corporation's portfolio of Energy loans.

(dollar amounts in millions)

2018

2017

December 31
Exploration and production (E&P) $ 1,771
298
Midstream
94
Services
$ 2,163
Total Energy business line
As a percentage of total Energy loans
(a)  Includes nonaccrual loans.

Outstandings

Nonaccrual Criticized (a)
$

82% $
14
4
100% $

46
—
2
48
2%

$

Outstandings

$ 1,346
295
195
$ 1,836

73% $
16
11
100% $

143
43
19
205

Nonaccrual Criticized (a)
$

94
—
14
108

$

376
37
95
508

9%

6%

28%

Loans in the Energy business line increased $327 million, or 18 percent, to $2.2 billion at December 31, 2018, compared 
to $1.8 billion at December 31, 2017, or approximately 4 percent of total loans at both December 31, 2018 and 2017. Total exposure, 
including unused commitments to extend credit and letters of credit, was $4.5 billion and $4.0 billion at December 31, 2018 and 
December 31, 2017, respectively.

The Corporation's allowance methodology considers the various risk elements within the loan portfolio. When merited, 
the Corporation may incorporate a qualitative reserve component for Energy loans. There were $6 million and $25 million in net 
credit-related charge-offs in the Energy business line for the years ended December 31, 2018 and 2017, respectively.

Leveraged Loans

Certain loans in the Corporation's commercial portfolio are considered leveraged transactions. These loans are typically 
used for mergers, acquisitions, business recapitalizations, refinancing and equity buyouts. To help mitigate the risk associated with 
these loans, the Corporation focuses on middle market companies with highly capable management teams, strong sponsors and 
solid track records of financial performance. Industries prone to cyclical downturns and acquisitions with a high degree of integration 
risk are generally avoided. Other considerations include the sufficiency of collateral, the level of balance sheet leverage and the 
adequacy of financial covenants. During the underwriting process, cash flows are stress tested to evaluate the borrowers' abilities 
to handle economic downturns and an increase in interest rates.

The FDIC defines higher-risk commercial and industrial (HR C&I) loans for assessment purposes as loans generally with 
leverage of four times total debt to earnings before interest, taxes and depreciation (EBITDA) as well as three times senior debt 
to EBITDA, excluding certain collateralized loans. HR C&I loans were $2.5 billion and $2.7 billion at December 31, 2018 and 
2017, respectively. Criticized loans within the HR C&I loan portfolio were $147 million and $284 million at December 31, 2018
and 2017, respectively. Charge-offs of HR C&I loans totaled $15 million in 2018 and $9 million in 2017.

F-28

International Exposure

International assets are subject to general risks inherent in the conduct of business in countries, including economic 
uncertainties and each foreign government's regulations. Risk management practices minimize the risk inherent in international 
lending arrangements. These practices include structuring bilateral agreements or participating in bank facilities, which secure 
repayment from sources external to the borrower's country. Accordingly, such international outstandings are excluded from the 
cross-border risk of that country.

There were no countries with cross-border outstandings exceeding one percent of total assets at December 31, 2018, 2017
and  2016.  Further,  none  exceeded  0.75  percent  of  total  assets  at  December 31,  2018  and  2017.  Mexico,  with  cross-border 
outstandings of $650 million (0.89 percent of total assets) at December 31, 2016 was the only country with outstandings between 
0.75 and one percent of total assets at December 31, 2016. The Corporation's international strategy is to focus on international 
companies doing business in North America, with an emphasis on the Corporation's primary geographic markets.

MARKET AND LIQUIDITY RISK

Market risk represents the risk of loss due to adverse movements in market rates or prices, including interest rates, foreign 
exchange rates, commodity prices and equity prices. Liquidity risk represents the failure to meet financial obligations coming due, 
resulting from an inability to liquidate assets or obtain adequate funding, and the inability to easily unwind or offset specific 
exposures without significant changes in pricing, due to inadequate market depth or market disruptions.

The Asset and Liability Policy Committee (ALCO) of the Corporation establishes and monitors compliance with the 
policies and risk limits pertaining to market and liquidity risk management activities. ALCO meets regularly to discuss and review 
market and liquidity risk management strategies, and consists of executive and senior management from various areas of the 
Corporation, including treasury, finance, economics, lending, deposit gathering and risk management. Corporate Treasury mitigates 
market and liquidity risk under the direction of ALCO through the actions it takes to manage the Corporation's market, liquidity 
and capital positions.

In addition to assessing liquidity risk on a consolidated basis, Corporate Treasury also monitors the parent company's 
liquidity and has established limits for the minimum number of months into the future in which the parent company can meet 
existing and forecasted obligations without the support of additional dividends from subsidiaries. ALCO's liquidity policy requires 
the parent company to maintain sufficient liquidity to meet expected capital and debt obligations with a target of 24 months but 
no less than 18 months.

Corporate Treasury and the Enterprise Risk Division support ALCO in measuring, monitoring and managing interest rate 
risk as well as all other market risks. Key activities encompass: (i) providing information and analyses of the Corporation's balance 
sheet structure and measurement of interest rate and all other market risks; (ii) monitoring and reporting of the Corporation's 
positions relative to established policy limits and guidelines; (iii) developing and presenting analyses and strategies to adjust risk 
positions; (iv) reviewing and presenting policies and authorizations for approval; and (v) monitoring of industry trends and analytical 
tools to be used in the management of interest rate and all other market and liquidity risks.

Interest Rate Risk

Net interest income is the primary source of revenue for the Corporation. Interest rate risk arises in the normal course of 
business due to differences in the repricing and cash flow characteristics of assets and liabilities, primarily through the Corporation's 
core business activities of extending loans and acquiring deposits. The Corporation's balance sheet is predominantly characterized 
by floating-rate loans funded by core deposits. The Corporation's loan composition at December 31, 2018 was 62 percent 30-day 
LIBOR, 13 percent other LIBOR (primarily 60-day), 16 percent prime and 9 percent fixed rate. This creates sensitivity to interest 
rate movements due to the imbalance between the floating-rate loan portfolio and more slowly repricing deposit products. In 
addition, the growth and/or contraction in the Corporation's loans and deposits may lead to changes in sensitivity to interest rate 
movements in the absence of mitigating actions. Examples of such actions are purchasing fixed-rate investment securities, which 
provide liquidity to the balance sheet and act to mitigate the inherent interest sensitivity, as well as hedging with interest rate swaps 
and options. The Corporation actively manages its exposure to interest rate risk, with the principal objective of optimizing net 
interest income and the economic value of equity while operating within acceptable limits established for interest rate risk and 
maintaining adequate levels of funding and liquidity.

Since no single measurement system satisfies all management objectives, a combination of techniques is used to manage 
interest rate risk. These techniques examine the impact of interest rate risk on net interest income and the economic value of equity 
under  a  variety  of  alternative  scenarios,  including  changes  in  the  level,  slope  and  shape  of  the  yield  curve  utilizing  multiple 
simulation analyses. Simulation analyses produce only estimates of net interest income as the assumptions used are inherently 
uncertain. Actual results may differ from simulated results due to many factors, including, but not limited to, the timing, magnitude 
and frequency of changes in interest rates, market conditions, regulatory impacts and management strategies.

F-29

Sensitivity of Net Interest Income to Changes in Interest Rates

The analysis of the impact of changes in interest rates on net interest income under various interest rate scenarios is 
management's principal risk management technique. Management models a base case net interest income under an unchanged 
interest rate environment. Existing derivative instruments entered into for risk management purposes are included in the analysis, 
but no additional hedging is forecasted. These derivative instruments currently comprise interest rate swaps that convert fixed-
rate long-term debt to variable rates. This base case net interest income is then compared against interest rate scenarios in which 
rates rise or decline in a linear, non-parallel fashion from the base case over 12 months. The first scenario presents a 200 basis- 
point increase in short-term rates, resulting in an average increase in short-term interest rates of 100 basis points over the period 
(+200 scenario). The second scenario presents a 200 basis-point decrease in short-term interest rates (but not to less than zero 
percent).

Each scenario includes assumptions such as loan growth, investment security prepayment levels, depositor behavior, 
yield curve changes, loan and deposit pricing, and overall balance sheet mix and growth. In this low rate environment, depositors 
have maintained a higher level of liquidity and their historical behavior may be less indicative of future trends. As a result, the 
+200 scenario reflects a greater decrease in deposits than we have experienced historically as rates begin to rise. Changes in actual 
economic activity may result in a materially different interest rate environment as well as a balance sheet structure that is different 
from the changes management included in its simulation analysis.

The table below, as of December 31, 2018 and 2017, displays the estimated impact on net interest income during the next 

12 months by relating the base case scenario results to those from the rising and declining rate scenarios described above. 

(in millions)
December 31
Change in Interest Rates:

Rising 200 basis points
Declining 200 basis points

Estimated Annual Change

2018

2017

Amount

%

Amount

%

$

142
(313)

6% $

(12)

197
(283)

9%
(13)

Sensitivity to rising rates decreased from December 31, 2017 to December 31, 2018, due to changes in balance sheet 
composition and interest-bearing deposit pricing assumptions. The December 31, 2017 risk to declining interest rates is impacted 
by the assumed floor on interest rates of zero percent and therefore simulates a decline of 150 basis points, while the December 31, 
2018 sensitivity reflects a decline of 200 basis points due to higher short-term rates.

Sensitivity of Economic Value of Equity to Changes in Interest Rates

In addition to the simulation analysis on net interest income, an economic value of equity analysis provides an alternative 
view of the interest rate risk position. The economic value of equity is the difference between the estimate of the economic value 
of the Corporation's financial assets, liabilities and off-balance sheet instruments, derived through discounting cash flows based 
on actual rates at the end of the period, and the estimated economic value after applying the estimated impact of rate movements. 
The Corporation primarily monitors the percentage change on the base case economic value of equity. The economic value of 
equity analysis is based on an immediate parallel 200 basis point increase. The declining interest rate scenarios are based on 
decreases of 200 basis points and 150 basis points in interest rates at December 31, 2018 and 2017, respectively.

The table below, as of December 31, 2018 and 2017, displays the estimated impact on the economic value of equity from 

the interest rate scenario described above.

(in millions)
December 31
Change in Interest Rates:

Rising 200 basis points
Declining 200 basis points

2018

2017

Amount

%

Amount

%

$

711
(2,769)

6% $

(21)

1,188
(2,635)

9%

(20)

The sensitivity of the economic value of equity to a 200 basis point parallel increase in rates declined between December 31, 
2017 and December 31, 2018 due to an increase in the modeled base case economic value of equity, which was driven by changes 
in balance sheet composition. The percentage change in sensitivity of the economic value of equity to a parallel decrease in rates 
to zero during the same period was stable.

F-30

LOAN MATURITIES AND INTEREST RATE SENSITIVITY

(in millions)
December 31, 2018
Commercial loans
Real estate construction loans
Commercial mortgage loans
International loans
Total

Sensitivity of loans to changes in interest rates:

Predetermined (fixed) interest rates
Floating interest rates

Total

Loans Maturing

Within One
Year (a)

After One
But Within
Five Years

After
Five Years

Total

$

$

$

$

15,175
1,408
1,653
456
18,692

711
17,981
18,692

$

$

$

$

15,706
1,589
4,793
543
22,631

2,397
20,234
22,631

$

$

$

$

1,095
80
2,660
14
3,849

570
3,279
3,849

$

$

$

$

31,976
3,077
9,106
1,013
45,172

3,678
41,494
45,172

(a)  Includes demand loans, loans having no stated repayment schedule or maturity and overdrafts.

The Corporation uses investment securities and derivative instruments as asset and liability management tools with the 
overall objective of managing the volatility of net interest income from changes in interest rates. These tools assist management 
in achieving the desired interest rate risk management objectives. Activity related to derivative instruments currently involves 
interest rate swaps effectively converting fixed-rate medium- and long-term debt to a floating rate.

Risk Management Derivative Instruments

(in millions)
Risk Management Notional Activity
Balance at January 1, 2017
Additions
Maturities/amortizations
Balance at December 31, 2017
Additions
Maturities/amortizations
Balance at December 31, 2018

Interest
Rate
Contracts

Foreign
Exchange
Contracts

$

$

$

2,275
—
(500)
1,775
850
—
2,625

$

$

$

717
12,004
(12,071)
650
10,095
(10,443)
302

$

$

$

Totals

2,992
12,004
(12,571)
2,425
10,945
(10,443)
2,927

The notional amount of risk management interest rate swaps totaled $2.6 billion at December 31, 2018, and $1.8 billion
at December 31, 2017, all under fair value hedging strategies, converting fixed-rate medium- and long-term debt to a floating rate. 
The fair value of risk management interest rate swaps was a net unrealized loss of $2 million at both December 31, 2018 and 2017. 
Risk management interest rate swaps generated $7 million and $32 million of net interest income for the years ended December 31, 
2018 and 2017, respectively.

In addition to interest rate swaps, the Corporation employs various other types of derivative instruments as offsetting 
positions to mitigate exposures to foreign currency risks associated with specific assets and liabilities (e.g., customer loans or 
deposits denominated in foreign currencies). Such instruments may include foreign exchange spot and forward contracts as well 
as foreign exchange swap agreements.

Further information regarding risk management derivative instruments is provided in Note 8 to the consolidated financial 

statements.

Customer-Initiated and Other Derivative Instruments

(in millions)
Customer-Initiated and Other Notional Activity
Balance at January 1, 2017
Additions
Maturities/amortizations
Terminations
Balance at December 31, 2017
Additions
Maturities/amortizations
Terminations
Balance at December 31, 2018

Interest
Rate
Contracts

Energy
Derivative
Contracts

Foreign
Exchange
Contracts

13,323
4,377
(2,096)
(1,215)
14,389
4,245
(2,195)
(1,554)
14,885

$

$

$

$

$

$

F-31

2,227
1,539
(1,681)
(238)
1,847
2,287
(1,481)
(3)
2,650

$

$

$

1,509
47,456
(46,987)
(94)
1,884
50,220
(50,639)
(370)
1,095

$

$

$

Totals

17,059
53,372
(50,764)
(1,547)
18,120
56,752
(54,315)
(1,927)
18,630

The Corporation sells and purchases interest rate caps and floors and enters into foreign exchange contracts, interest rate 
swaps and energy derivative contracts to accommodate the needs of customers requesting such services. Changes in the fair value 
of customer-initiated and other derivatives are recognized in earnings as they occur. To limit the market risk of these activities, 
the Corporation generally takes offsetting positions with dealers. The notional amounts of offsetting positions are included in the 
table above. Customer-initiated and other notional activity represented 86 percent and 88 percent of total interest rate, energy and 
foreign exchange contracts at December 31, 2018 and 2017, respectively.

Further information regarding customer-initiated and other derivative instruments is provided in Note 8 to the consolidated 

financial statements.

Liquidity Risk and Off-Balance Sheet Arrangements

Liquidity is the ability to meet financial obligations through the maturity or sale of existing assets or the acquisition of 
additional funds. Various financial obligations, including contractual obligations and commercial commitments, may require future 
cash payments by the Corporation. Certain obligations are recognized on the Consolidated Balance Sheets, while others are off-
balance sheet under U.S. generally accepted accounting principles.

The  following  contractual  obligations  table  summarizes  the  Corporation's  noncancelable  contractual  obligations  and 
future required minimum payments. Refer to Notes 6, 9, 10, 11, 12, and 18 to the consolidated financial statements for further 
information regarding these contractual obligations.

Contractual Obligations

(in millions)
December 31, 2018
Deposits without a stated maturity (a)
Certificates of deposit and other deposits with a stated

maturity (a)

Short-term borrowings (a)
Medium- and long-term debt (a)
Operating leases
Commitments to fund low income housing partnerships
Other long-term obligations (b)
Total contractual obligations

Minimum Payments Due by Period
1-3
Years

Less than
1 Year

3-5
Years

More than
5 Years

$

53,422

Total
53,422

$

2,139
44
6,425
377
165
348
62,920

$

1,614
44
350
67
101
87
55,685

$

$

472
—
675
109
45
83
1,384

$

28
—
850
74
5
38
995

850

$

$

25
—
4,550
127
14
140
4,856

250

Medium- and long-term debt (parent company only) (a) (c) $
(a)  Deposits and borrowings exclude accrued interest.
(b)  Includes unrecognized tax benefits.
(c)  Parent company only amounts are included in the medium- and long-term debt minimum payments above.

1,450

350

$

$

— $

In addition to contractual obligations, other commercial commitments of the Corporation impact liquidity. These include  
unused commitments to extend credit, standby letters of credit and financial guarantees, and commercial letters of credit. The 
following table summarizes the Corporation's commercial commitments and expected expiration dates by period.

Commercial Commitments

(in millions)
December 31, 2018
Unused commitments to extend credit
Standby letters of credit and financial guarantees
Commercial letters of credit

Total commercial commitments

Expected Expiration Dates by Period
1-3
Less than
Years
1 Year

3-5
Years

More than
5 Years

$

$

7,878
2,791
37
10,706

$

$

8,733
268
—
9,001

$

$

7,860
119
2
7,981

$

$

2,796
66
—
2,862

Total
27,267
3,244
39
30,550

$

$

Since  many  of  these  commitments  expire  without  being  drawn  upon,  and  each  customer  must  continue  to  meet  the 
conditions established in the contract, the total amount of these commercial commitments does not necessarily represent the future 
cash requirements of the Corporation. Refer to the “Other Market Risks” section below and Note 8 to the consolidated financial 
statements for a further discussion of these commercial commitments.

Wholesale Funding

The Corporation may access the purchased funds market when necessary, which includes a variety of funding sources. 
Capacity for incremental purchased funds at December 31, 2018 included short-term FHLB advances, the ability to purchase 
federal funds, sell securities under agreements to repurchase, as well as issue deposits through brokers. Purchased funds increased 

F-32

to $52 million at December 31, 2018, compared to $25 million at December 31, 2017. At December 31, 2018, the Bank had pledged 
loans totaling $22.8 billion which provided for up to $18.9 billion of available collateralized borrowing with the FRB.

The Bank is a member of the FHLB of Dallas, Texas, which provides short- and long-term funding to its members through 
advances collateralized by real estate-related assets. Actual borrowing capacity is contingent on the amount of collateral available 
to be pledged to the FHLB. At December 31, 2018, $15.7 billion of real estate-related loans were pledged to the FHLB as blanket 
collateral for current and potential future borrowings. The Corporation had $3.8 billion of outstanding borrowings maturing between 
2026 and 2028 and capacity for potential future borrowings of approximately $5.0 billion.

Additionally, the Bank had the ability to issue up to $14.0 billion of debt at December 31, 2018 under an existing $15.0 
billion note program which allows the issuance of debt with maturities between three months and 30 years. The Corporation also 
maintains a shelf registration statement with the Securities and Exchange Commission from which it may issue debt and equity 
securities.

The ability of the Corporation and the Bank to raise funds at competitive rates is impacted by rating agencies' views of 
the credit quality, liquidity, capital and earnings of the Corporation and the Bank. As of December 31, 2018, the three major rating 
agencies had assigned the following ratings to long-term senior unsecured obligations of the Corporation and the Bank. A security 
rating is not a recommendation to buy, sell, or hold securities and may be subject to revision or withdrawal at any time by the 
assigning rating agency. Each rating should be evaluated independently of any other rating.

December 31, 2018
Standard and Poor’s
Moody’s Investors Service
Fitch Ratings

Comerica Incorporated

Comerica Bank

Rating

Outlook

Rating

Outlook

BBB+
A3
A

Stable
Stable
Stable

A-
A3
A

Stable
Stable
Stable

The Corporation satisfies liquidity needs with either liquid assets or various funding sources. Liquid assets totaled $16.3 
billion at December 31, 2018, compared to $17.4 billion at December 31, 2017. Liquid assets include cash and due from banks, 
federal funds sold, interest-bearing deposits with banks, other short-term investments and unencumbered investment securities.

The Corporation performs monthly liquidity stress testing to evaluate its ability to meet funding needs in hypothetical 
stressed environments. Such environments cover a series of broad events, distinguished in terms of duration and severity. The 
evaluation as of December 31, 2018 projected that sufficient sources of liquidity were available under each series of events.

Other Market Risks

Market risk related to the Corporation's trading instruments is not significant, as trading activities are limited. Certain 
components of the Corporation's noninterest income, primarily fiduciary income, are at risk to fluctuations in the market values 
of underlying assets, particularly equity and debt securities. Other components of noninterest income, primarily brokerage fees, 
are at risk to changes in the volume of market activity. 

OPERATIONAL RISK

Operational risk represents the risk of loss resulting from inadequate or failed internal processes, people and systems, 
including cybersecurity, or from external events. The definition does not include strategic or reputational risks. Although operational 
losses are experienced by all companies and are routinely incurred in business operations, the Corporation recognizes the need to 
identify and control operational losses and seeks to limit losses to a level deemed appropriate by management, as outlined in the 
Corporation’s  risk  appetite  statement.  The  appropriate  risk  level  is  determined  through  consideration  of  the  nature  of  the 
Corporation's business and the environment in which it operates, in combination with the impact from, and the possible impact 
on, other risks faced by the Corporation. Operational risk is mitigated through a system of internal controls that are designed to 
keep operating risks at appropriate levels. The Operational Risk Management Committee monitors risk management techniques 
and systems. The Corporation has developed a framework that includes a centralized operational risk management function and 
business/support unit risk liaisons responsible for managing operational risk specific to the respective business lines.

COMPLIANCE RISK

Compliance risk represents the risk of regulatory sanctions or financial loss resulting from the Corporation's failure to 
comply with regulations and standards of good banking practice. The impact of such risks is highly interdependent with strategic 
risk, as the reputational impact from compliance breaches can be severe. Activities which may expose the Corporation to compliance 
risk include, but are not limited to, those dealing with the prevention of money laundering, privacy and data protection, community 
reinvestment initiatives, fair lending, consumer protection, employment and tax matters, over-the-counter derivative activities and 
other activities regulated by the Dodd-Frank Wall Street Reform and Consumer Protection Act.

The  Enterprise-Wide  Compliance  Committee,  comprising  senior  and  executive  business  unit  managers,  as  well  as 
managers responsible for compliance, audit and overall risk, oversees compliance risk. This enterprise-wide approach provides a 
F-33

consistent view of compliance across the organization. The Enterprise-Wide Compliance Committee also ensures that appropriate 
actions are implemented in business units to mitigate risk to an acceptable level.

STRATEGIC RISK

Strategic risk represents the risk of loss due to impairment of reputation, failure to fully develop and execute business 
plans,  failure  to  assess  current  and  new  opportunities  in  business,  markets  and  products,  failure  to  determine  appropriate 
consideration for risks accepted, and any other event not identified in the defined risk categories of credit, market and liquidity, 
operational or compliance risks. Mitigation of the various risk elements that represent strategic risk is achieved through various 
metrics and initiatives to help the Corporation better understand, measure and report on such risks.

F-34

CRITICAL ACCOUNTING POLICIES

The Corporation’s consolidated financial statements are prepared based on the application of accounting policies, the 
most significant of which are described in Note 1. These policies require numerous estimates and strategic or economic assumptions, 
which may prove inaccurate or subject to variations. Changes in underlying factors, assumptions or estimates could have a material 
impact on the Corporation’s future financial condition and results of operations. At December 31, 2018, the most critical of these 
significant accounting policies were the policies related to the allowance for credit losses, fair value measurement, goodwill, 
pension plan accounting and income taxes. These policies were reviewed with the Audit Committee of the Corporation’s Board 
of Directors and are discussed more fully below.

ALLOWANCE FOR CREDIT LOSSES

The allowance for credit losses, which includes both the allowance for loan losses and the allowance for credit losses on 
lending-related commitments, is calculated with the objective of maintaining a reserve sufficient to absorb estimated probable 
losses. Management's determination of the appropriateness of the allowance is based on periodic evaluations of the loan portfolio, 
lending-related commitments and other relevant factors. This evaluation is inherently subjective as it requires numerous estimates, 
including the loss content for internal risk ratings, collateral values, the amounts and timing of expected future cash flows, and 
for lending-related commitments, estimates of the probability of draw on unused commitments. In addition, management exercises 
judgment to adjust or supplement modeled estimates for factors not otherwise fully accounted for, such as the risks and uncertainties 
observed in current market conditions, portfolio developments and other imprecision factors. 

In determining the allowance for credit losses, the Corporation individually evaluates certain impaired loans, applies 
standard reserve factors to pools of homogeneous loans and lending-related commitments and incorporates qualitative adjustments. 
Standard loss factors, applied to the majority of the Corporation's loan portfolio and lending-related commitments, are based on 
estimates of probabilities of default for individual risk ratings over the loss emergence period and loss given default. Loss emergence 
periods are used to determine the most appropriate default horizon associated with the calculation of probabilities of default. 
Changes to one or more of the estimates used to develop standard loss factors, or the use of different estimates, would result in a 
different estimated allowance for credit losses. To illustrate, if recent loss experience dictated that the estimated standard loss 
factors would be changed by five percent of the estimate across all loan risk ratings, the allowance for loan losses as of December 31, 
2018 would change by approximately $23 million.

Because standard loss factors are applied to pools of loans based on the Corporation's internal risk rating system, loss 
estimates are highly dependent on the accuracy of the risk rating assigned to each loan. The inherent imprecision in the risk rating 
system resulting from inaccuracy in assigning and/or entering risk ratings in the loan accounting system is monitored by the 
Corporation's  asset  quality  review  function  and  incorporated  in  a  qualitative  adjustment.  The  Corporation  may  also  include 
qualitative adjustments intended to capture the impact of certain other uncertainties that exist but are not yet reflected in the 
standard reserve factors. These qualitative adjustments are based on management’s analysis of factors such as portfolios where 
recent historical losses exceed expected losses or known recent events are expected to alter risk ratings once evidence is acquired, 
observable macroeconomic metrics, including consideration of regional metrics within the Corporation's footprint, and a qualitative 
assessment of the lending environment, including underwriting standards, current economic and political conditions, and other 
factors affecting credit quality. Qualitative reserves at December 31, 2018 primarily included components for portfolios where 
recent loss trends were in excess of estimated losses based on overall portfolio standard loss factors, model imprecision and changes 
in market conditions compared to the conditions that existed at the date of the most recent annual update to standard reserve factors.

For further discussion of the methodology used in the determination of the allowance for credit losses, refer to Note 1 to 
the consolidated financial statements. To the extent actual outcomes differ from management estimates, additional provision for 
credit  losses  may  be  required  that  would  adversely  impact  earnings  in  future  periods. The  allowance  is  assigned  to  business 
segments and any earnings impact resulting from actual outcomes differing from management estimates would primarily affect 
the Business Bank segment.

FAIR VALUE MEASUREMENT

Investment securities available-for-sale, derivatives and deferred compensation plan assets and associated liabilities are 
recorded at fair value on a recurring basis. Additionally, from time to time, other assets and liabilities may be recorded at fair value 
on a nonrecurring basis, such as impaired loans that have been reduced based on the fair value of the underlying collateral, other 
real  estate  (primarily  foreclosed  property),  nonmarketable  equity  securities  and  certain  other  assets  and  liabilities.  These 
nonrecurring fair value adjustments typically involve write-downs of individual assets or application of lower of cost or fair value 
accounting.

Fair value is an estimate of the exchange price that would be received to sell an asset or paid to transfer a liability in an 
orderly  transaction  (i.e.,  not  a  forced  transaction,  such  as  a  liquidation  or  distressed  sale)  between  market  participants  at  the 
measurement date and is based on the assumptions market participants would use when pricing an asset or liability. Fair value 
measurement and disclosure guidance establishes a three-level hierarchy for disclosure of assets and liabilities recorded at fair 

F-35

value. Notes 1 and 2 to the consolidated financial statements includes information about the fair value hierarchy, the extent to 
which fair value is used to measure assets and liabilities and the valuation methodologies and key inputs used. 

At December 31, 2018, assets and liabilities measured using observable inputs that are classified as Level 1 or Level 2 
represented 99.6 percent and 100 percent of total assets and liabilities recorded at fair value, respectively. Valuations generated 
from model-based techniques that use at least one significant assumption not observable in the market are considered Level 3 and 
reflect estimates of assumptions market participants would use in pricing the asset or liability.

GOODWILL 

Goodwill is initially recorded as the excess of the purchase price over the fair value of net assets acquired in a business 
combination  and  is  subsequently  evaluated  for  impairment.  Goodwill  impairment  testing  is  performed  annually  (unless 
management determines an interim test is necessary) at the reporting unit level, equivalent to a business segment or one level 
below. The Corporation has three reporting units: the Business Bank, the Retail Bank and Wealth Management. At December 31, 
2018 and 2017, goodwill totaled $635 million, including $473 million allocated to the Business Bank, $101 million allocated to 
the Retail Bank and $61 million allocated to Wealth Management. 

The annual test of goodwill impairment was performed as of the beginning of the third quarter 2018. The Corporation 
may elect to perform a quantitative impairment analysis, or first conduct a qualitative analysis to determine if a quantitative analysis 
is necessary. The Corporation first assessed qualitative factors to determine whether it was more likely than not that the fair value 
of any reporting unit was less than its carrying amount, including goodwill. Qualitative factors included economic conditions, 
industry and market considerations, cost factors, overall financial performance, regulatory developments and performance of the 
Corporation’s stock, among other events and circumstances. At the conclusion of the qualitative assessment in the third quarter 
2018, the Corporation determined that it was more likely than not that the fair value of each reporting unit exceeded its carrying 
value.

Subsequent to the date of the annual impairment test, the Corporation reorganized certain reporting structures. As a result, 
Small Business, formerly a component of the Retail Bank, became a component of the Business Bank. Accordingly, the Corporation 
reallocated $93 million of goodwill from the Retail Bank to Business Bank. The Corporation subsequently performed an additional 
qualitative impairment analysis and again determined that it was more likely than not that the fair value of each reporting unit 
exceeded it carrying value and that performing a quantitative impairment test was not necessary.

Qualitative factors considered in the analysis of each reporting unit incorporated current economic and market conditions, 
including the recent Federal Reserve announcements and the impact of legislative and regulatory changes, to the extent known. 
However, further weakening in the economic environment, such as adverse changes in interest rates, a decline in the performance 
of the reporting units or other factors could cause the fair value of one or more of the reporting units to fall below their carrying 
value,  resulting  in  a  goodwill  impairment  charge.  Additionally,  new  legislative  or  regulatory  changes  not  anticipated  in 
management's expectations may cause the fair value of one or more of the reporting units to fall below the carrying value, resulting 
in a goodwill impairment charge. Any impairment charge would not affect the Corporation's regulatory capital ratios, tangible 
common equity ratio or liquidity position.

PENSION PLAN ACCOUNTING

The Corporation has a qualified and non-qualified defined benefit pension plan. Effective January 1, 2017, benefits are 
calculated using a cash balance formula based on years of service, age, compensation and an interest credit based on the 30-year 
Treasury rate. Participants under age 60 as of December 31, 2016 are eligible to receive a frozen final average pay benefit in 
addition to amounts earned under the cash balance formula. Participants age 60 or older as of December 31, 2016 continue to be 
eligible for a final average pay benefit. The Corporation makes assumptions concerning future events that will determine the 
amount and timing of required benefit payments, funding requirements and defined benefit pension expense. The major assumptions 
are the discount rate used in determining the current benefit obligation, the long-term rate of return expected on plan assets, mix 
of assets within the portfolio, the form of payment election and the projected mortality rate. 

The discount rate is determined by matching the expected cash flows of the pension plans to a portfolio of high quality 
corporate  bonds  as  of  the  measurement  date,  December  31. The  long-term  rate  of  return  expected  on  plan  assets  is  set  after 
considering both long-term returns in the general market and long-term returns experienced by the assets in the plan. The current 
target asset allocation model for the plans is provided in Note 17 to the consolidated financial statements. The expected returns 
on these various asset categories are blended to derive one long-term return assumption. The assets are invested in certain collective 
investment funds, common stocks, U.S. Treasury and other U.S. government agency securities, and corporate and municipal bonds 
and notes. The form of payment election assumption is based on market experience. Mortality rate assumptions are based on 
mortality tables published by third-parties such as the Society of Actuaries (SOA), considering other available information including 
historical data as well as studies and publications from reputable sources. 

F-36

The Corporation reviews its pension plan assumptions on an annual basis with its actuarial consultants to determine if 
the assumptions are reasonable and adjusts the assumptions to reflect changes in future expectations. The assumptions used to 
calculate 2019 defined benefit plan pension expense (benefit) were as follows:

Discount rate
Long-term rate of return on plan assets
Lump sum payment election rate:

Participants before January 1, 2017
All other participants

Mortality table:
Base table (a)
Mortality improvement scale (a)

(a)  Issued by the Society of Actuaries in October 2018.

4.37%
6.50%

50%
80%

RP-2018
MP-2018

Defined  benefit  plan  expense  is  expected  to  decrease  $9  million  to  a  benefit  of  approximately  $27  million  in  2019, 
compared to a benefit of $18 million in 2018. This includes service cost expense of $34 million and a benefit from other components 
of $61 million.

Changing the 2019 discount rate and long-term rate of return by 25 basis points would impact defined benefit expense 

in 2019 by $7.1 million and $6.4 million, respectively.

Due to the long-term nature of pension plan assumptions, actual results may differ significantly from the actuarial-based 
estimates. Differences resulting in actuarial gains or losses are required to be recorded in shareholders' equity as part of accumulated 
other comprehensive loss and amortized to defined benefit pension expense in future years. Refer to Note 17 to the consolidated 
financial statements for further information.

INCOME TAXES

The calculation of the Corporation's income tax provision and tax-related accruals is complex and requires the use of 
estimates and judgments. The provision for income taxes is the sum of income taxes due for the current year and deferred taxes. 
Deferred taxes arise from temporary differences between the income tax basis and financial accounting basis of assets and liabilities. 
Accrued taxes represent the net estimated amount due to or to be received from taxing jurisdictions, currently or in the future, and 
are included in accrued income and other assets or accrued expenses and other liabilities on the Consolidated Balance Sheets. The 
Corporation assesses the relative risks and merits of tax positions for various transactions after considering statutes, regulations, 
judicial precedent and other available information and maintains tax accruals consistent with these assessments. The Corporation 
is subject to audit by taxing authorities that could question and/or challenge the tax positions taken by the Corporation.

Included in net deferred taxes are deferred tax assets. Deferred tax assets are evaluated for realization based on available 
evidence of projected future reversals of existing taxable temporary differences, assumptions made regarding future events and, 
when applicable, state loss carryback capacity. A valuation allowance is provided when it is more-likely-than-not that some portion 
of the deferred tax asset will not be realized. In December 2017, the Tax Cuts and Jobs Act (the "Act") was signed into law, resulting 
in the reduction of the federal tax rate from 35 percent to 21 percent. This resulted in a $107 million charge to adjust deferred 
taxes as a result of the decline in the federal tax rate in 2017, with an $8 million downward revision to the estimated impact 
recorded in 2018 for a total remeasurement of the Corporation's deferred tax balance of $99 million. 

Changes in the estimate of accrued taxes occur due to changes in tax law, interpretations of existing tax laws, new judicial 
or regulatory guidance, and the status of examinations conducted by taxing authorities that impact the relative risks and merits of 
tax  positions  taken  by  the  Corporation. These  changes,  when  they  occur,  impact  the  estimate  of  accrued  taxes  and  could  be 
significant to the operating results of the Corporation. For further information on tax accruals and related risks, see Note 18 to the 
consolidated financial statements.

F-37

The following table provides a reconciliation of non-GAAP financial measures used in this financial review with financial 

SUPPLEMENTAL FINANCIAL DATA

measures defined by GAAP.

(dollar amounts in millions)
December 31
Tangible Common Equity Ratio:
Common shareholders' equity
Less:

Goodwill
Other intangible assets
Tangible common equity
Total assets
Less:

Goodwill
Other intangible assets

Tangible assets
Common equity ratio
Tangible common equity ratio
Tangible Common Equity per Share of Common Stock:
Common shareholders' equity
Tangible common equity
Shares of common stock outstanding (in millions)
Common shareholders' equity per share of common stock
Tangible common equity per share of common stock

2018

2017

2016

2015

2014

$

7,507

$

7,963

$

7,796

$

7,560

$

7,402

635
6
$
6,866
$ 70,818

635
6
$ 70,177

10.60%
9.78

$

$

7,507
6,866
160
46.89
42.89

$
$

$

$

$

635
8
7,320
71,567

635
8
70,924

11.13%
10.32

7,963
7,320
173
46.07
42.34

$
$

$

$

$

635
10
7,151
72,978

635
10
72,333

10.68%
9.89

7,796
7,151
175
44.47
40.79

$
$

$

$

$

635
14
6,911
71,877

635
14
71,228

10.52%
9.70

7,560
6,911
176
43.03
39.33

$
$

$

$

$

635
15
6,752
69,186

635
15
68,536

10.70%
9.85

7,402
6,752
179
41.35
37.72

The tangible common equity ratio removes the effect of intangible assets from capital and total assets. Tangible common 
equity per share of common stock removes the effect of intangible assets from common shareholders equity per share of common 
stock. The Corporation believes these measurements are meaningful measures of capital adequacy used by investors, regulators, 
management and others to evaluate the adequacy of common equity and to compare against other companies in the industry. 

F-38

FORWARD-LOOKING STATEMENTS

This report includes forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. In 
addition, the Corporation may make other written and oral communications from time to time that contain such statements. All 
statements  regarding  the  Corporation's  expected  financial  position,  strategies  and  growth  prospects,  including  the  GEAR  Up 
initiative, and general economic conditions expected to exist in the future are forward-looking statements. The words, “anticipates,” 
“believes,”  "contemplates,"  “feels,”  “expects,”  “estimates,”  “seeks,”  “strives,”  “plans,”  “intends,”  “outlook,”  “forecast,” 
“position,” “target,” “mission,” “assume,” “achievable,” “potential,” “strategy,” “goal,” “aspiration,” “opportunity,” “initiative,” 
“outcome,” “continue,” “remain,” “maintain,” "on track," “trend,” “objective,” “looks forward,” "projects," "models" and variations 
of such words and similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could,” “might,” “can,” 
“may”  or  similar  expressions,  as  they  relate  to  the  Corporation  or  its  management,  are  intended  to  identify  forward-looking 
statements. The Corporation cautions that forward-looking statements are subject to numerous assumptions, risks and uncertainties, 
which change over time. Forward-looking statements speak only as of the date the statement is made, and the Corporation does 
not undertake to update forward-looking statements to reflect facts, circumstances, assumptions or events that occur after the date 
the  forward-looking  statements  are  made. Actual  results  could  differ  materially  from  those  anticipated  in  forward-looking 
statements and future results could differ materially from historical performance.

In  addition  to  factors  mentioned  elsewhere  in  this  report  or  previously  disclosed  in  the  Corporation's  SEC  reports 
(accessible on the SEC's website at www.sec.gov or on the Corporation's website at www.comerica.com), actual results could 
differ materially from forward-looking statements and future results could differ materially from historical performance due to a 
variety of reasons, including but not limited to, the following factors:

• 
• 

• 
• 

• 

• 
• 

• 
• 

• 
• 
• 
• 

• 
• 
• 
• 
• 
• 
• 

general political, economic or industry conditions, either domestically or internationally, may be less favorable than expected;
governmental monetary and fiscal policies may adversely affect the financial services industry, and therefore impact the 
Corporation's financial condition and results of operations;
the Corporation’s operational or security systems or infrastructure, or those of third parties, could fail or be breached;
the Corporation relies on other companies to provide certain key components of its delivery systems, and certain failures 
could materially adversely affect operations;
security risks, including denial of service attacks, hacking, social engineering attacks targeting the Corporation’s colleagues 
and customers, malware intrusion or data corruption attempts, and identity theft, could result in the disclosure of confidential 
information;
proposed revenue enhancements and efficiency improvements under the GEAR Up initiative may not be achieved; 
the Corporation must maintain adequate sources of funding and liquidity to meet regulatory expectations, support its operations 
and fund outstanding liabilities;
compliance with more stringent capital requirements may adversely affect the Corporation;
declines in the businesses or industries of the Corporation's customers could cause increased credit losses or decreased loan 
balances, which could adversely affect the Corporation;
unfavorable developments concerning credit quality could adversely affect the Corporation's financial results;
changes in regulation or oversight may have a material adverse impact on the Corporation's operations;
cybersecurity and data privacy are areas of heightened legislative and regulatory focus;
fluctuations in interest rates and their impact on deposit pricing could adversely affect the Corporation's net interest income 
and balance sheet;
developments impacting LIBOR and other interest rate benchmarks could adversely affect the Corporation;
reduction in the Corporation's credit ratings could adversely affect the Corporation and/or the holders of its securities;
damage to the Corporation’s reputation could damage its businesses;
the Corporation may not be able to utilize technology to develop, market and deliver new products and services to its customers;
competitive product and pricing pressures within the Corporation's markets may change;
the soundness of other financial institutions could adversely affect the Corporation;
the introduction, implementation, withdrawal, success and timing of business initiatives and strategies may be less successful 
or may be different than anticipated, which could adversely affect the Corporation's business;
changes in customer behavior may adversely impact the Corporation's business, financial condition and results of operations;

• 
•  management's ability to maintain and expand customer relationships may differ from expectations;
•  methods of reducing risk exposures might not be effective;
• 

catastrophic events, including, but not limited to, hurricanes, tornadoes, earthquakes, fires, droughts and floods, may adversely 
affect the general economy, financial and capital markets, specific industries, and the Corporation;
the impacts of future legislative, administrative or judicial changes or interpretations to tax regulations are unknown;
any future strategic acquisitions or divestitures may present certain risks to the Corporation's business and operations;

• 
• 
•  management's ability to retain key officers and employees may change;
• 

legal  and  regulatory  proceedings  and  related  financial  services  industry  matters,  including  those  directly  involving  the 
Corporation and its subsidiaries, could adversely affect the Corporation or the financial services industry in general;
the Corporation may incur losses due to fraud;
terrorist activities or other hostilities could cause adverse effects; 

• 
• 

F-39

• 
• 

• 
• 

changes in accounting standards could materially impact the Corporation's financial statements; 
the Corporation's accounting policies and processes are critical to the reporting of financial condition and results of operations 
and require management to make estimates about matters that are uncertain; 
controls and procedures may fail to prevent or detect all errors or acts of fraud; and
the Corporation's stock price can be volatile.

F-40

CONSOLIDATED BALANCE SHEETS
Comerica Incorporated and Subsidiaries

(in millions, except share data)
December 31

ASSETS
Cash and due from banks

Interest-bearing deposits with banks
Other short-term investments

Investment securities available-for-sale
Investment securities held-to-maturity

Commercial loans
Real estate construction loans
Commercial mortgage loans
Lease financing
International loans
Residential mortgage loans
Consumer loans

Total loans

Less allowance for loan losses

Net loans
Premises and equipment
Accrued income and other assets

Total assets

LIABILITIES AND SHAREHOLDERS’ EQUITY
Noninterest-bearing deposits

Money market and interest-bearing checking deposits
Savings deposits
Customer certificates of deposit
Foreign office time deposits

Total interest-bearing deposits
Total deposits

Short-term borrowings
Accrued expenses and other liabilities
Medium- and long-term debt
Total liabilities

Common stock - $5 par value:

Authorized - 325,000,000 shares
Issued - 228,164,824 shares

Capital surplus
Accumulated other comprehensive loss
Retained earnings
Less cost of common stock in treasury - 68,081,176 shares at 12/31/18 and 55,306,483 shares at

12/31/17

Total shareholders’ equity
Total liabilities and shareholders’ equity

See notes to consolidated financial statements.

F-41

2018

2017

$

1,390

$

3,171
134

12,045
—

31,976
3,077
9,106
507
1,013
1,970
2,514
50,163
(671)
49,492
475
4,111
70,818

28,690

22,560
2,172
2,131
8
26,871
55,561
44
1,243
6,463
63,311

1,141
2,148
(609)
8,781

$

$

(3,954)
7,507
70,818

$

$

$

$

1,438

4,407
96

10,938
1,266

31,060
2,961
9,159
468
983
1,988
2,554
49,173
(712)
48,461
466
4,495
71,567

32,071

21,500
2,152
2,165
15
25,832
57,903
10
1,069
4,622
63,604

1,141
2,122
(451)
7,887

(2,736)
7,963
71,567

CONSOLIDATED STATEMENTS OF INCOME
Comerica Incorporated and Subsidiaries

(in millions)
Years Ended December 31
INTEREST INCOME
Interest and fees on loans
Interest on investment securities
Interest on short-term investments

Total interest income

INTEREST EXPENSE
Interest on deposits
Interest on short-term borrowings
Interest on medium- and long-term debt
Total interest expense
Net interest income

Provision for credit losses

Net interest income after provision for credit losses

NONINTEREST INCOME
Card fees
Service charges on deposit accounts
Fiduciary income
Commercial lending fees
Foreign exchange income
Letter of credit fees
Bank-owned life insurance
Brokerage fees
Net securities losses
Other noninterest income

Total noninterest income

NONINTEREST EXPENSES
Salaries and benefits expense
Outside processing fee expense
Net occupancy expense
Software expense
Restructuring charges
Equipment expense
FDIC insurance expense
Advertising expense
Other noninterest expenses

Total noninterest expenses

Income before income taxes
Provision for income taxes
NET INCOME
Less income allocated to participating securities
Net income attributable to common shares
Earnings per common share:

Basic
Diluted

Cash dividends declared on common stock
Cash dividends declared per common share

See notes to consolidated financial statements.

F-42

$

$

$

2018

2017

2016

$

$

$

2,262
265
92
2,619

122
1
144
267
2,352
(1)
2,353

244
211
206
85
47
40
39
27
(19)
96
976

1,009
255
152
125
53
48
42
30
80
1,794
1,535
300
1,235
8
1,227

7.31
7.20

309
1.84

$

$

$

1,872
250
60
2,182

42
3
76
121
2,061
74
1,987

333
227
198
85
45
45
43
23
—
108
1,107

961
366
154
126
45
45
51
28
84
1,860
1,234
491
743
5
738

4.23
4.14

193
1.09

1,635
247
27
1,909

40
—
72
112
1,797
248
1,549

303
219
190
89
42
50
42
19
—
97
1,051

989
336
157
119
93
53
54
21
108
1,930
670
193
477
4
473

2.74
2.68

154
0.89

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Comerica Incorporated and Subsidiaries

(in millions)
Years Ended December 31

NET INCOME

OTHER COMPREHENSIVE (LOSS) INCOME

Unrealized losses on investment securities:

Net unrealized holding losses arising during the period
Less:

Reclassification adjustment for net securities losses included in net income
Net losses realized as a yield adjustment in interest on investment securities

Change in net unrealized losses before income taxes

Defined benefit pension and other postretirement plans adjustment:

Actuarial (loss) gain arising during the period
Prior service credit arising during the period
Adjustments for amounts recognized as components of net periodic benefit

cost:
Amortization of actuarial net loss
Amortization of prior service credit

Change in defined benefit pension and other postretirement plans adjustment

before income taxes

Total other comprehensive (loss) income before income taxes
(Benefit) provision for income taxes
Total other comprehensive (loss) income, net of tax

2018

2017

2016

$

1,235

$

743

$

477

(69)

(20)
—
(49)

(191)
—

61
(27)

(157)

(206)
(47)
(159)

(81)

—
(3)
(78)

72
—

51
(27)

96

18
(1)
19

(70)

—
(3)
(67)

(134)
234

46
(7)

139

72
26
46

523

COMPREHENSIVE INCOME

$

1,076

$

762

$

See notes to consolidated financial statements.

F-43

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY
Comerica Incorporated and Subsidiaries

(in millions, except per share data)

BALANCE AT DECEMBER 31, 2015
Net income
Other comprehensive income, net of tax
Cash dividends declared on common

stock ($0.89 per share)
Purchase of common stock
Net issuance of common stock under

employee stock plans

Net issuance of common stock for

warrants

Share-based compensation

BALANCE AT DECEMBER 31, 2016
Cumulative effect of change in
accounting principle
Net income
Other comprehensive income, net of tax
Cash dividends declared on common

stock ($1.09 per share)
Purchase of common stock
Net issuance of common stock under

employee stock plans

Net issuance of common stock for

warrants

Share-based compensation
Reclassification of certain deferred tax

effects

Other

BALANCE AT DECEMBER 31, 2017
Cumulative effect of change in

accounting principles

Net income
Other comprehensive loss, net of tax
Cash dividends declared on common

stock ($1.84 per share)
Purchase of common stock
Net issuance of common stock under

employee stock plans

Net issuance of common stock for

warrants

Share-based compensation

Common Stock

Shares
Outstanding

175.7
—
—

—
(6.8)

4.1

2.3
—

Amount

$ 1,141
—
—

Capital
Surplus

$ 2,173
—
—

—
—

—

—
—

—
—

(15)

(57)
34

Accumulated
Other
Comprehensive
Loss

Retained
Earnings

Treasury
Stock

Total
Shareholders’
Equity

$

(429) $
—
46

7,084
477
—

$

(2,409) $
—
—

—
—

—

—
—

(154)
—

(27)

(49)
—

—
(310)

185

106
—

7,560
477
46

(154)
(310)

143

—
34

175.3

1,141

2,135

(383)

7,331

(2,428)

7,796

—
—
—

—
(7.5)

3.3

1.8
—

—
—

—
—
—

—
—

—

—
—

—
—

3
—
—

—
—

(24)

(30)
39

—
(1)

172.9

1,141

2,122

—
—
—

—
(14.9)

1.5

0.6

—

—
—
—

—
—

—

—

—

—
—
—

—
(3)

(9)

(10)

48

—
—
19

—
—

—

—
—

(87)
—

(451)

1
—
(159)

—
—

—

—

—

(2)
743
—

(193)
—

(26)

(53)
—

87
—

—
—
—

—
(544)

152

83
—

—
1

7,887

(2,736)

14
1,235
—

(309)
—

(23)

(23)

—

—
—
—

—
(1,326)

75

33

—

1
743
19

(193)
(544)

102

—
39

—
—

7,963

15
1,235
(159)

(309)
(1,329)

43

—

48

BALANCE AT DECEMBER 31, 2018

160.1

$ 1,141

$ 2,148

$

(609) $

8,781

$

(3,954) $

7,507

See notes to consolidated financial statements.

F-44

CONSOLIDATED STATEMENTS OF CASH FLOWS
Comerica Incorporated and Subsidiaries

(in millions)
Years Ended December 31
OPERATING ACTIVITIES

2018

2017

2016

Net income
Adjustments to reconcile net income to net cash provided by operating activities:

$

1,235

$

743

$

Provision for credit losses
Provision (benefit) for deferred income taxes
Depreciation and amortization
Net periodic defined benefit (credit) cost
Share-based compensation expense
Net amortization of securities
Accretion of loan purchase discount
Net securities losses
Net gains on sales of foreclosed property
Net change in:

Accrued income receivable
Accrued expenses payable
Other, net

Net cash provided by operating activities

INVESTING ACTIVITIES

Investment securities available-for-sale:

Maturities and redemptions
Sales
Purchases

Investment securities held-to-maturity:

Maturities and redemptions

Net change in loans
Proceeds from sales of foreclosed property
Net increase in premises and equipment
Federal Home Loan Bank stock:

Purchases
Redemptions

Proceeds from bank-owned life insurance settlements
Other, net

Net cash used in investing activities

FINANCING ACTIVITIES

Net change in:
Deposits
Short-term borrowings
Medium- and long-term debt:
Maturities and redemptions
Issuances and advances
Terminations
Common stock:
Repurchases
Cash dividends paid
Issuances under employee stock plans

Other, net

Net cash (used in) provided by financing activities

Net (decrease) increase in cash and cash equivalents
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Interest paid
Income taxes paid
Noncash investing and financing activities:

Loans transferred to other real estate
Loans transferred from held-to-sale to portfolio
Securities transferred from held-to-maturity to available-for-sale
Securities transferred from available-for-sale to equity securities

See notes to consolidated financial statements.

$
$

F-45

(1)
24
120
(18)
48
3
(1)
19
(1)

(45)
49
184
1,616

1,781
1,256
(3,032)

—
(1,045)
8
(90)

(41)
—
9
(2)
(1,156)

(2,082)
34

—
1,850
—

(1,338)
(263)
52
3
(1,744)
(1,284)
5,845
4,561
261
200

3
—
1,266
81

$
$

74
79
121
(18)
39
6
(3)
—
(3)

(33)
41
39
1,085

1,615
1,259
(3,112)

319
(175)
22
(69)

(42)
42
18
3
(120)

(1,180)
(15)

(500)
—
(16)

(560)
(180)
118
(5)
(2,338)
(1,373)
7,218
5,845
122
336

8
—
—
—

$
$

477

248
(51)
121
6
34
8
(4)
—
(4)

(20)
37
(366)
486

1,699
—
(2,045)

402
(136)
20
(95)

(115)
—
16
—
(254)

(998)
2

(650)
2,800
—

(320)
(152)
157
—
839
1,071
6,147
7,218
111
151

21
17
—
—

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 1 - BASIS OF PRESENTATION AND ACCOUNTING POLICIES

Organization

Comerica Incorporated (the Corporation) is a registered financial holding company headquartered in Dallas, Texas. The 
Corporation’s major business segments are the Business Bank, the Retail Bank and Wealth Management. The Corporation operates 
in three primary geographic markets: Michigan, California and Texas. For further discussion of each business segment and primary 
geographic market, refer to Note 23. The Corporation and its banking subsidiaries are regulated at both the state and federal levels.

The accounting and reporting policies of the Corporation conform to United States (U.S.) generally accepted accounting 
principles (GAAP). The preparation of financial statements in conformity with GAAP requires management to make estimates 
and assumptions that affect reported amounts and disclosures. Actual results could differ from these estimates. Certain amounts 
in the financial statements for prior years have been reclassified to conform to the current financial statement presentation.

The  following  summarizes  the  significant  accounting  policies  of  the  Corporation  applied  in  the  preparation  of  the 

accompanying consolidated financial statements.

Principles of Consolidation

The consolidated financial statements include the accounts of the Corporation and the accounts of those subsidiaries that 
are majority owned and in which the Corporation has a controlling financial interest. The Corporation consolidates entities not 
determined to be variable interest entities (VIEs) when it holds a controlling financial interest and uses the cost or equity method 
when it holds less than a controlling financial interest. In consolidation, all significant intercompany accounts and transactions are 
eliminated. The results of operations of companies acquired are included from the date of acquisition.

The Corporation holds investments in certain legal entities that are considered VIEs. In general, a VIE is an entity that 
either (1) has an insufficient amount of equity to carry out its principal activities without additional subordinated financial support, 
(2) has a group of equity owners that are unable to make significant decisions about its activities, or (3) has a group of equity 
owners that do not have the obligation to absorb losses or the right to receive returns generated by its operations. If any of these 
characteristics are present, the entity is subject to a variable interests consolidation model, and consolidation is based on variable 
interests, not on voting interests. Variable interests are defined as contractual ownership or other money interests in an entity that 
change with fluctuations in the entity’s net asset value. The primary beneficiary is required to consolidate the VIE. The primary 
beneficiary is defined as the party that has both the power to direct the activities of the VIE that most significantly impact the 
entity’s economic performance and the obligation to absorb losses or the right to receive benefits that could be significant to the 
VIE. The maximum potential exposure to losses relative to investments in VIEs is generally limited to the sum of the outstanding 
book basis and unfunded commitments for future investments.

The Corporation evaluates its investments in VIEs, both at inception and when there is a change in circumstances that 
requires reconsideration, to determine if the Corporation is the primary beneficiary and consolidation is required. The Corporation 
accounts for unconsolidated VIEs using either the proportional, cost or equity method. These investments comprise investments 
in community development projects which generate tax credits to their investors and are included in accrued income and other 
assets on the Consolidated Balance Sheets.

The proportional method is used for investments in affordable housing projects that qualify for the low-income housing 
tax credit (LIHTC). The equity method is used for other investments where the Corporation has the ability to exercise significant 
influence over the entity’s operation and financial policies. Other unconsolidated equity investments that do not meet the criteria 
to be accounted for under the equity method are accounted for under the cost method. Amortization and other write-downs of 
LIHTC investments are presented on a net basis as a component of the provision for income taxes, while income, amortization 
and write-downs from cost and equity method investments are recorded in other noninterest income on the Consolidated Statements 
of Income.

Assets held in an agency or fiduciary capacity are not assets of the Corporation and are not included in the consolidated 

financial statements.

See Note 9 for additional information about the Corporation’s involvement with VIEs.

Fair Value Measurements

The Corporation utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to 
determine fair value disclosures. The determination of fair values of financial instruments often requires the use of estimates. In 
cases where quoted market values in an active market are not available, the Corporation uses present value techniques and other 
valuation methods to estimate the fair values of its financial instruments. These valuation methods require considerable judgment 
and the resulting estimates of fair value can be significantly affected by the assumptions made and methods used.

F-46

 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Fair value is an estimate of the exchange price that would be received to sell an asset or paid to transfer a liability in an 
orderly  transaction  (i.e.,  not  a  forced  transaction,  such  as  a  liquidation  or  distressed  sale)  between  market  participants  at  the 
measurement date. Fair value is based on the assumptions market participants would use when pricing an asset or liability.

Investment  securities  available-for-sale,  derivatives,  deferred  compensation  plans,  and  equity  securities  with  readily 
determinable fair values (primarily money market mutual funds) are recorded at fair value on a recurring basis. Additionally, from 
time to time, the Corporation may be required to record other assets and liabilities at fair value on a nonrecurring basis, such as 
impaired loans, other real estate (primarily foreclosed property), nonmarketable equity securities and certain other assets and 
liabilities. These nonrecurring fair value adjustments typically involve write-downs of individual assets or application of lower of 
cost or fair value accounting.

Fair value measurements and disclosures guidance establishes a three-level fair value hierarchy based on the markets in 
which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The fair value hierarchy 
gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data. Fair value measurements 
are separately disclosed by level within the fair value hierarchy. For assets and liabilities recorded at fair value, it is the Corporation’s 
policy  to  maximize  the  use  of  observable  inputs  and  minimize  the  use  of  unobservable  inputs  when  developing  fair  value 
measurements.

Level 1

Valuation is based upon quoted prices for identical instruments traded in active markets.

Level 2

Level 3

Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical 
or similar instruments in markets that are less active, and model-based valuation techniques for which all 
significant assumptions are observable in the market.

Valuation  is  generated  from  model-based  techniques  that  use  at  least  one  significant  assumption  not 
observable in the market. These unobservable assumptions reflect estimates of assumptions that market 
participants would use in pricing the asset or liability. Valuation techniques include use of option pricing 
models, discounted cash flow models and similar techniques.

The Corporation generally utilizes third-party pricing services to value Level 1 and Level 2 securities. Management 
reviews the methodologies and assumptions used by the third-party pricing services and evaluates the values provided, principally 
by comparison with other available market quotes for similar instruments and/or analysis based on internal models using available 
third-party market data. The Corporation may occasionally adjust certain values provided by the third-party pricing service when 
management believes, as the result of its review, that the adjusted price most appropriately reflects the fair value of the particular 
security.

Fair value measurements for assets and liabilities where limited or no observable market data exists are based primarily 
upon estimates, often calculated based on the economic and competitive environment, the characteristics of the asset or liability 
and other factors. Therefore, the results cannot be determined with precision and may not be realized in an actual sale or immediate 
settlement of the asset or liability. Additionally, there may be inherent weaknesses in any calculation technique, and changes in 
the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results 
of current or future values.

Following are descriptions of the valuation methodologies and key inputs used to measure financial assets and liabilities 
recorded at fair value, as well as a description of the methods and significant assumptions used to estimate fair value disclosures 
for financial instruments not recorded at fair value in their entirety on a recurring basis. The descriptions include an indication of 
the level of the fair value hierarchy in which the assets or liabilities are classified. Transfers of assets or liabilities between levels 
of the fair value hierarchy are recognized at the beginning of the reporting period, when applicable.

Cash and due from banks, federal funds sold and interest-bearing deposits with banks

Due to their short-term nature, the carrying amount of these instruments approximates the estimated fair value. As such, 

the Corporation classifies the estimated fair value of these instruments as Level 1.

Deferred compensation plan assets and liabilities as well as equity securities with a readily determinable fair value

The Corporation holds a portfolio of equity securities, as well as assets held related to employee deferred compensation 
plans. Securities and associated deferred compensation plan liabilities are recorded at fair value on a recurring basis and included 
in other short-term investments and accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheets. Level 
1 securities include assets related to employee deferred compensation plans, which are invested in mutual funds, U.S. Treasury 
securities that are traded by dealers or brokers in active over-the-counter markets and other securities traded on an active exchange, 
such as the New York Stock Exchange. Deferred compensation plan liabilities represent the fair value of the obligation to the 
employee, which corresponds to the fair value of the invested assets. Level 2 securities include municipal bonds and residential 
F-47

 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

mortgage-backed securities issued by U.S. government-sponsored entities and corporate debt securities. The methods used to value 
equity securities and deferred compensation plan assets are the same as the methods used to value investment securities, discussed 
below.

Investment securities

Investment securities available-for-sale are recorded at fair value on a recurring basis. The Corporation discloses estimated 
fair values of investment securities held-to-maturity, which is determined in the same manner as investment securities available-
for-sale. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury 
securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities 
include residential mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored entities and 
corporate  debt  securities.  The  fair  value  of  Level  2  securities  is  determined  using  quoted  prices  of  securities  with  similar 
characteristics,  or  pricing  models  based  on  observable  market  data  inputs,  primarily  interest  rates,  spreads  and  prepayment 
information.

Securities classified as Level 3 represent securities in less liquid markets requiring significant management assumptions 
when determining fair value. Auction-rate securities comprise Level 3 investment securities available-for-sale. The Corporate 
Treasury department, with appropriate oversight and approval provided by senior management, is responsible for the valuation of 
auction-rate securities. Valuation results, including an analysis of changes to the valuation methodology, are provided to senior 
management for review on a quarterly basis.

Loans held-for-sale

Loans held-for-sale, included in other short-term investments on the Consolidated Balance Sheets, are recorded at the 
lower of cost or fair value. Loans held-for-sale may be carried at fair value on a nonrecurring basis when fair value is less than 
cost. The fair value is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, 
the Corporation classifies both loans held-for-sale subjected to nonrecurring fair value adjustments and the estimated fair value 
of loans held-for sale as Level 2.

Loans

The Corporation does not record loans at fair value on a recurring basis. However, the Corporation may establish a specific 
allowance for an impaired loan based on the fair value of the underlying collateral. Such loan values are reported as nonrecurring 
fair  value  measurements.  Collateral  values  supporting  individually  evaluated  impaired  loans  are  evaluated  quarterly.  When 
management determines that the fair value of the collateral requires additional adjustments, either as a result of non-current appraisal 
value or when there is no observable market price, the Corporation classifies the impaired loan as Level 3. The Special Assets 
Group is responsible for performing quarterly credit quality reviews for all impaired loans as part of the quarterly allowance for 
loan losses process overseen by the Chief Credit Officer, during which valuation adjustments to updated collateral values are 
determined.

The Corporation discloses fair value estimates for loans. The estimated fair value is determined based on characteristics 
such as loan category, repricing features and remaining maturity, and includes prepayment and credit loss estimates. Fair values 
are estimated using a discounted cash flow model that employs discount rates that reflects current pricing for loans with similar 
maturity and risk characteristics, including credit characteristics, and the cost of equity for the portfolio at the balance sheet date. 
The rates take into account the expected yield curve, as well as an adjustment for prepayment risk, when applicable. The Corporation 
classifies the estimated fair value of loans held for investment as Level 3.

Customers’ liability on acceptances outstanding and acceptances outstanding

Customers' liability on acceptances outstanding is included in accrued income and other assets and acceptances outstanding 
are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Due to their short-term nature, the 
carrying amount of these instruments approximates the estimated fair value. As such, the Corporation classifies the estimated fair 
value of these instruments as Level 1.

Derivative assets and derivative liabilities

Derivative instruments held or issued for risk management or customer-initiated activities are traded in over-the-counter 
markets where quoted market prices are not readily available. Fair value for over-the-counter derivative instruments is measured 
on a recurring basis using internally developed models that use primarily market observable inputs, such as yield curves and option 
volatilities. The Corporation manages credit risk on its derivative positions based on whether the derivatives are being settled 
through a clearinghouse or bilaterally with each counterparty. For derivative positions settled on a counterparty-by-counterparty 
basis, the Corporation calculates credit valuation adjustments, included in the fair value of these instruments, on the basis of its 
relationships at the counterparty portfolio/master netting agreement level. These credit valuation adjustments are determined by 
applying a credit spread for the counterparty or the Corporation, as appropriate, to the total expected exposure of the derivative 
after considering collateral and other master netting arrangements. These adjustments, which are considered Level 3 inputs, are 
F-48

 
 
 
 
 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

based on estimates of current credit spreads to evaluate the likelihood of default. When credit valuation adjustments are significant 
to the overall fair value of a derivative, the Corporation classifies the over-the-counter derivative valuation in Level 3 of the fair 
value hierarchy; otherwise, over-the-counter derivative valuations are classified in Level 2.

Nonmarketable equity securities

The Corporation has a portfolio of indirect (through funds) private equity and venture capital investments with a carrying 
value of $6 million and unfunded commitments of less than $1 million, at December 31, 2018. The investments are accounted for 
either on the cost or equity method and are individually reviewed for impairment on a quarterly basis by comparing the carrying 
value to the estimated fair value. These investments may be carried at fair value on a nonrecurring basis when they are deemed to 
be impaired and written down to fair value. Where there is not a readily determinable fair value, the Corporation estimates fair 
value for indirect private equity and venture capital investments based on the net asset value, as reported by the fund. 

The Corporation also holds restricted equity investments, primarily Federal Home Loan Bank (FHLB) and Federal Reserve 
Bank (FRB) stock. Restricted equity securities are not readily marketable and are recorded at cost (par value) in accrued income 
and other assets on the Consolidated Balance Sheets and evaluated for impairment based on the ultimate recoverability of the par 
value. No significant observable market data for these instruments is available. The Corporation considers the profitability and 
asset quality of the issuer, dividend payment history and recent redemption experience and believes its investments in FHLB and 
FRB stock are ultimately recoverable at par. Therefore, the carrying amount for these restricted equity investments approximates 
fair value. The Corporation classifies the estimated fair value of such investments as Level 1. The Corporation’s investment in 
FHLB stock totaled $163 million and $122 million at December 31, 2018 and 2017, respectively, and its investment in FRB stock 
totaled $85 million at both December 31, 2018 and 2017. 

Other real estate

Other real estate is included in accrued income and other assets on the Consolidated Balance Sheets and includes primarily 
foreclosed property. Foreclosed property is initially recorded at fair value, less costs to sell, at the date of legal title transfer to the 
Corporation, establishing a new cost basis. Subsequently, foreclosed property is carried at the lower of cost or fair value, less costs 
to sell. Other real estate may be carried at fair value on a nonrecurring basis when fair value is less than cost. Fair value is based 
upon independent market prices, appraised value or management's estimate of the value of the property. The Special Assets Group 
obtains updated independent market prices and appraised values, as required by state regulation or deemed necessary based on 
market conditions, and determines if additional write-downs are necessary. On a quarterly basis, senior management reviews all 
other real estate and determines whether the carrying values are reasonable, based on the length of time elapsed since receipt of 
independent market price or appraised value and current market conditions. When management determines that the fair value of 
other real estate requires additional adjustments, either as a result of a non-current appraisal or when there is no observable market 
price, the Corporation classifies the other real estate as Level 3.

Deposit liabilities

The estimated fair value of checking, savings and certain money market deposit accounts is represented by the amounts 
payable on demand. The estimated fair value of term deposits is calculated by discounting the scheduled cash flows using the 
period-end rates offered on these instruments. As such, the Corporation classifies the estimated fair value of deposit liabilities as 
Level 2.

Short-term borrowings

The carrying amount of federal funds purchased, securities sold under agreements to repurchase and other short-term 
borrowings  approximates  the  estimated  fair  value. As  such,  the  Corporation  classifies  the  estimated  fair  value  of  short-term 
borrowings as Level 1.

Medium- and long-term debt

The estimated fair value of the Corporation's medium- and long-term debt is based on quoted market values when available. 
If quoted market values are not available, the estimated fair value is based on the market values of debt with similar characteristics. 
The Corporation classifies the estimated fair value of medium- and long-term debt as Level 2.

Credit-related financial instruments

Credit-related financial instruments include unused commitments to extend credit and letters of credit. These instruments 
generate ongoing fees which are recognized over the term of the commitment. In situations where credit losses are probable, the 
Corporation records an allowance. The carrying value of these instruments included in accrued expenses and other liabilities on 
the Consolidated Balance Sheets, which includes the carrying value of the deferred fees plus the related allowance, approximates 
the estimated fair value. The Corporation classifies the estimated fair value of credit-related financial instruments as Level 3.

For further information about fair value measurements refer to Note 2.

F-49

 
 
 
 
 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Other Short-Term Investments

Other short-term investments include deferred compensation plan assets, equity securities with a readily determinable 

fair value and loans held-for-sale. 

Deferred compensation plan assets and equity securities are carried at fair value. Realized and unrealized gains or losses 

are included in other noninterest income on the Consolidated Statements of Income.

Loans held-for-sale, typically residential mortgages originated with the intent to sell and occasionally may include other 
loans transferred to held-for-sale, are carried at the lower of cost or fair value. Fair value is determined in the aggregate for each 
portfolio. Changes in fair value and gains or losses upon sale are included in other noninterest income on the Consolidated Statements 
of Income.

Investment Securities

Debt securities not held for trading purposes are classified as available-for-sale or held-to-maturity. Securities available-
for-sale are recorded at fair value, with unrealized gains and losses, net of income taxes, reported as a separate component of other 
comprehensive income (OCI). Interest income is recognized using the interest method. Securities for which management has the 
intent and ability to hold to maturity are classified as held-to-maturity and recorded at amortized cost. 

Securities transferred from available-for-sale to held-to-maturity are reclassified at fair value on the date of transfer. The 
net unrealized gain (loss) at the date of transfer is included in historical cost and amortized over the remaining life of the related 
securities as a yield adjustment consistent with the amortization of the net unrealized gain (loss) included in accumulated other 
comprehensive loss on the same securities, resulting in no impact to net income.

The  Corporation  adopted  ASU  No.  2017-12,  “Derivatives  and  Hedging  (Topic  815):  Targeted  Improvements  to 
Accounting for Hedging Activities” (ASU 2017-12), effective January 1, 2018. As part of the adoption, the Corporation made a 
transition election to reclassify the portfolio of held-to-maturity securities to available-for-sale in January 2018 as the securities 
are eligible to be hedged. This resulted in the recognition of additional unrealized losses of $11 million at the date of transfer. For 
further information on ASU 2017-12, refer to the “Derivatives Instruments and Hedging Activities” policy in this Note.

Debt securities are reviewed quarterly for possible other-than-temporary impairment (OTTI). In determining whether 
OTTI exists for debt securities in an unrealized loss position, the Corporation assesses the likelihood of selling the security prior 
to the recovery of its amortized cost basis. If the Corporation intends to sell the debt security or it is more likely than not that the 
Corporation will be required to sell the debt security prior to the recovery of its amortized cost basis, the debt security is written 
down to fair value, and the full amount of any impairment charge is recorded as a loss in net securities losses in the Consolidated 
Statements of Income. If the Corporation does not intend to sell the debt security and it is more likely than not that the Corporation 
will not be required to sell the debt security prior to recovery of its amortized cost basis, only the credit component of any impairment 
of a debt security is recognized as a loss in net securities losses on the Consolidated Statements of Income, with the remaining 
impairment recorded in OCI.

Gains or losses on the sale of securities are computed based on the adjusted cost of the specific security sold.

Effective January 1, 2018, the Corporation adopted the provisions of Accounting Standards Update (ASU) No. 2016-01, 
"Financial Instruments - Overall (Subtopic 825-10): Recognition of Financial Assets and Financial Liabilities," (ASU 2016-01). 
ASU 2016-01 requires equity investments, other than equity method investments, to be measured at fair value with changes in fair 
value recognized in net income. As a result, equity securities with readily determinable fair value were reclassified from investment 
securities available-for-sale to other short-term investments. At adoption, an immaterial amount of cumulative net unrealized losses 
on equity securities previously recognized in accumulated other comprehensive income (AOCI) was reclassified to the opening 
balance of retained earnings, included in cumulative effect of change in accounting principles in the accompanying Consolidated 
Statements of Changes in Shareholders' Equity.

For further information on investment securities, refer to Note 3.

Loans

Loans and leases originated and held for investment are recorded at the principal balance outstanding, net of unearned 
income, charge-offs and unamortized deferred fees and costs. Interest income is recognized on loans and leases using the interest 
method.

The  Corporation  assesses  all  loan  modifications  to  determine  whether  a  restructuring  constitutes  a  troubled  debt 
restructuring (TDR). A restructuring is considered a TDR when a borrower is experiencing financial difficulty and the Corporation 
grants a concession to the borrower. TDRs on accrual status at the original contractual rate of interest are considered performing. 

F-50

 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Nonperforming  TDRs  include  TDRs  on  nonaccrual  status  and  loans  which  have  been  renegotiated  to  less  than  the  original 
contractual rates (reduced-rate loans). All TDRs are considered impaired loans.

Loan Origination Fees and Costs

Substantially all loan origination fees and costs are deferred and amortized to net interest income over the life of the 
related loan or over the commitment period as a yield adjustment. Net deferred income on originated loans, including unearned 
income and unamortized costs, fees, premiums and discounts, totaled $115 million and $113 million at December 31, 2018 and 
2017, respectively.

Loan fees on unused commitments and net origination fees related to loans sold are recognized in noninterest income.

 Allowance for Credit Losses

The allowance for credit losses includes both the allowance for loan losses and the allowance for credit losses on lending-

related commitments.

The Corporation disaggregates the loan portfolio into segments for purposes of determining the allowance for credit 
losses. These segments are based on the level at which the Corporation develops, documents and applies a systematic methodology 
to determine the allowance for credit losses. The Corporation's portfolio segments are business loans and retail loans. Business 
loans include the commercial, real estate construction, commercial mortgage, lease financing and international loan portfolios. 
Retail loans consist of traditional residential mortgage, home equity and other consumer loans.

For further information on the Allowance for Credit Losses, refer to Note 4.

Allowance for Loan Losses

The  allowance  for  loan  losses  represents  management’s  assessment  of  probable,  estimable  losses  inherent  in  the 
Corporation’s loan portfolio. The allowance for loan losses includes specific allowances, based on individual evaluations of certain 
loans, and allowances for homogeneous pools of loans with similar risk characteristics. 

The Corporation individually evaluates certain impaired loans on a quarterly basis and establishes specific allowances 
for such loans, if required. A loan is considered impaired when it is probable that interest or principal payments will not be made 
in accordance with the contractual terms of the loan agreement. Consistent with this definition, all loans for which the accrual of 
interest has been discontinued (nonaccrual loans) are considered impaired. The Corporation individually evaluates nonaccrual 
loans with book balances of $2 million or more and loans whose terms have been modified in a TDR with book balances of $1 
million or more. The threshold for individual evaluation is revised on an infrequent basis, generally when economic circumstances 
change significantly. Specific allowances for impaired loans are estimated using one of several methods, including the estimated 
fair value of underlying collateral, observable market value of similar debt or discounted expected future cash flows. Collateral 
values  supporting  individually  evaluated  impaired  loans  are  evaluated  quarterly. At  least  annually,  appraisals  are  obtained  or 
appraisal assumptions are updated, unless conditions dictate increased frequency. The Corporation may reduce the collateral value 
based upon the age of the appraisal and adverse developments in market conditions.

Loans which do not meet the criteria to be evaluated individually are evaluated in homogeneous pools of loans with 
similar risk characteristics. Business loans are assigned to pools based on the Corporation's internal risk rating system. Internal 
risk ratings are assigned to each business loan at the time of approval and are subjected to subsequent periodic reviews by the 
Corporation’s senior management, generally at least annually or more frequently upon the occurrence of a circumstance that affects 
the credit risk of the loan. For business loans not individually evaluated, losses inherent to the pool are estimated by applying 
standard reserve factors to outstanding principal balances. Standard reserve factors are based on estimated probabilities of default 
for each internal risk rating, set to a default horizon based on an estimated loss emergence period, and loss given default. These 
factors are evaluated quarterly and updated annually, unless economic conditions necessitate a change, giving consideration to 
count-based borrower risk rating migration experience and trends, recent charge-off experience, current economic conditions and 
trends, changes in collateral values of properties securing loans, and trends with respect to past due and nonaccrual amounts. 

The allowance for business loans not individually evaluated also includes qualitative adjustments to bring the allowance 
to the level management believes is appropriate based on factors that have not otherwise been fully accounted for, including 
adjustments for (i) risk factors that have not been fully addressed in internal risk ratings, (ii) imprecision in the risk rating system 
resulting from inaccuracy in assigning and/or entering risk ratings in the loan accounting system, (iii) market conditions and (iv) 
model imprecision. Risk factors that have not been fully addressed in internal risk ratings may include portfolios where recent 
historical losses exceed expected losses or known recent events are expected to alter risk ratings once evidence is acquired, portfolios 
where a certain level of concentration introduces added risk, or changes in the level and quality of experience held by lending 
management. An additional allowance for risk rating errors is calculated based on the results of risk rating accuracy assessments 
performed on samples of business loans conducted by the Corporation's asset quality review function, a function independent of 
F-51

 
 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

the lending and credit groups responsible for assigning the initial internal risk rating at the time of approval. Qualitative adjustments 
for market conditions are determined based on an established framework. The determination of the appropriate adjustment is based 
on  management's  analysis  of  observable  macroeconomic  metrics,  including  consideration  of  regional  metrics  within  the 
Corporation's  footprint,  internal  credit  risk  movement  and  a  qualitative  assessment  of  the  lending  environment,  including 
underwriting standards, current economic and political conditions, and other factors affecting credit quality. Management recognizes 
the sensitivity of various assumptions made in the quantitative modeling of expected losses and may adjust reserves depending 
upon the level of uncertainty that currently exists in one or more assumption. 

The allowance for retail loans not individually evaluated is determined by applying estimated loss rates to various pools 
of loans within the portfolios with similar risk characteristics. Estimated loss rates for all pools are updated quarterly, incorporating 
quantitative  and  qualitative  factors  such  as  recent  charge-off  experience,  current  economic  conditions  and  trends,  changes  in 
collateral values of properties securing loans (using index-based estimates), and trends with respect to past due and nonaccrual 
amounts.

The total allowance for loan losses is sufficient to absorb incurred losses inherent in the total portfolio. Unanticipated 
economic events, including political, economic and regulatory instability in countries where the Corporation has loans, could cause 
changes in the credit characteristics of the portfolio and result in an unanticipated increase in the allowance. Significant increases 
in current portfolio exposures, as well as the inclusion of additional industry-specific portfolio exposures in the allowance, could 
also increase the amount of the allowance. Any of these events, or some combination thereof, may result in the need for additional 
provision for credit losses in order to maintain an allowance that complies with credit risk and accounting policies.

Loans deemed uncollectible are charged off and deducted from the allowance. Recoveries on loans previously charged 

off are added to the allowance.

Allowance for Credit Losses on Lending-Related Commitments

The allowance for credit losses on lending-related commitments provides for probable losses inherent in lending-related 
commitments, including unused commitments to extend credit and letters of credit. The allowance for credit losses on lending-
related commitments includes allowances based on homogeneous pools of letters of credit and unused commitments to extend 
credit within each internal risk rating. A probability of draw estimate is applied to the commitment amount, and the result is 
multiplied by standard reserve factors consistent with business loans. In general, the probability of draw for letters of credit is 
considered certain for all letters of credit supporting loans and for letters of credit assigned an internal risk rating generally consistent 
with regulatory defined substandard or doubtful. Other letters of credit and all unfunded commitments have a lower probability 
of draw. The allowance for credit losses on lending-related commitments is included in accrued expenses and other liabilities on 
the Consolidated Balance Sheets, with the corresponding charge reflected in the provision for credit losses on the Consolidated 
Statements of Income.

Nonperforming Assets

Nonperforming assets consist of nonaccrual loans, reduced-rate loans and foreclosed property.

A loan is considered past due when the contractually required principal or interest payment is not received by the specified 
due date or, for certain loans, when a scheduled monthly payment is past due and unpaid for 30 days or more. Business loans are 
generally placed on nonaccrual status when management determines full collection of principal or interest is unlikely or when 
principal or interest payments are 90 days past due, unless the loan is fully collateralized and in the process of collection. The past-
due status of a business loan is one of many indicative factors considered in determining the collectability of the credit. The primary 
driver of when the principal amount of a business loan should be fully or partially charged-off is based on a qualitative assessment 
of the recoverability of the principal amount from collateral and other cash flow sources. Residential mortgage and home equity 
loans are generally placed on nonaccrual status once they become 90 days past due and are charged off to current appraised values 
less costs to sell no later than 180 days past due. In addition, junior lien home equity loans less than 90 days past due are placed 
on nonaccrual status if they have underlying risk characteristics that place full collection of the loan in doubt, such as when the 
related senior lien position is identified as seriously delinquent. Residential mortgage and consumer loans in bankruptcy for which 
the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt are placed on nonaccrual status 
and written down to estimated collateral value, without regard to the actual payment status of the loan, and are classified as TDRs. 
All other consumer loans are generally placed on nonaccrual status at 90 days past due and are charged off at no later than 120 
days past due, or earlier if deemed uncollectible. 

At the time a loan is placed on nonaccrual status, interest previously accrued but not collected is charged against current 
income. Principal and interest payments received on such loans are generally first applied as a reduction of principal. Income on 
nonaccrual loans is then recognized only to the extent that cash is received after principal has been fully repaid or future collection 
of principal is probable. Generally, a loan may be returned to accrual status when all delinquent principal and interest have been 

F-52

 
 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

received and the Corporation expects repayment of the remaining contractual principal and interest, or when the loan or debt 
security is both well secured and in the process of collection.

Foreclosed property (primarily real estate) is initially recorded at fair value, less costs to sell, at the date of legal title 
transfer to the Corporation and subsequently carried at the lower of cost or fair value, less estimated costs to sell. Loans are 
reclassified to foreclosed property upon obtaining legal title to the collateral. Independent appraisals are obtained to substantiate 
the fair value of foreclosed property at the time of foreclosure and updated at least annually or upon evidence of deterioration in 
the property’s value. At the time of foreclosure, the adjustment for the difference between the related loan balance and fair value 
(less estimated costs to sell) of the property acquired is charged or credited to the allowance for loan losses. Subsequent write-
downs, operating expenses and losses upon sale, if any, are charged to noninterest expenses. Foreclosed property is included in 
accrued income and other assets on the Consolidated Balance Sheets.

Premises and Equipment

Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation, computed using 
the straight-line method, is charged to operations over the estimated useful lives of the assets. Estimated useful lives are generally 
3  years  to  33  years  for  premises  that  the  Corporation  owns  and  3  years  to  8  years  for  furniture  and  equipment.  Leasehold 
improvements are generally amortized over the terms of their respective leases or 10 years, whichever is shorter.

Software

Capitalized software is stated at cost, less accumulated amortization. Capitalized software includes purchased software, 
capitalizable application development costs associated with internally-developed software and cloud computing arrangements, 
including an in-substance software license. Amortization, computed on the straight-line method, is charged to operations over the 
estimated useful life of the software, generally 5 years. Capitalized software is included in accrued income and other assets on the 
Consolidated Balance Sheets.

Goodwill and Core Deposit Intangibles

Goodwill, included in accrued income and other assets on the Consolidated Balance Sheets, is initially recorded as the 
excess of the purchase price over the fair value of net assets acquired in a business combination and is subsequently evaluated at 
least  annually  for  impairment.  Goodwill  impairment  testing  is  performed  at  the  reporting  unit  level,  equivalent  to  a  business 
segment or one level below. The Corporation has three reporting units: the Business Bank, the Retail Bank and Wealth Management.

The Corporation performs its annual evaluation of goodwill impairment in the third quarter of each year and on an interim 
basis if events or changes in circumstances between annual tests suggest additional testing may be warranted to determine if 
goodwill might be impaired. The goodwill impairment test is a two-step test. The first step of the goodwill impairment test compares 
the estimated fair value of identified reporting units with their carrying amount, including goodwill. If the estimated fair value of 
the reporting unit is less than the carrying value, the second step must be performed to determine the implied fair value of the 
reporting unit's goodwill and the amount of goodwill impairment, if any. The implied fair value of goodwill is determined as if 
the reporting unit were being acquired in a business combination. If the implied fair value of goodwill exceeds the goodwill assigned 
to the reporting unit, there is no impairment. If the goodwill assigned to a reporting unit exceeds the implied fair value of goodwill, 
an impairment charge would be recorded for the excess.

The Corporation may choose to perform a qualitative assessment to determine whether the first step of the impairment 
test should be performed in future periods if certain factors indicate that impairment is unlikely. Factors which could be considered 
in the assessment of the likelihood of impairment include macroeconomic conditions, industry and market considerations, stock 
performance of the Corporation and its peers, financial performance, events affecting the Corporation as a whole or its reporting 
units individually and previous results of goodwill impairment tests.

Core deposit intangibles are amortized on an accelerated basis, based on the estimated period the economic benefits are 
expected to be received. Core deposit intangibles are reviewed for impairment when events or changes in circumstances indicate 
that their carrying amounts may not be recoverable. Impairment for a finite-lived intangible asset exists if the sum of the undiscounted 
cash flows expected to result from the use of the asset exceeds its carrying value.

Additional information regarding goodwill and core deposit intangibles can be found in Note 7.

Nonmarketable Equity Securities

The  Corporation  has  certain  investments  that  are  not  readily  marketable.  These  investments  include  a  portfolio  of 
investments  in  indirect  private  equity  and  venture  capital  funds  and  restricted  equity  investments,  which  are  securities  the 
Corporation is required to hold for various reasons, primarily Federal Home Loan Bank of Dallas (FHLB) and Federal Reserve 
Bank (FRB) stock. These investments are accounted for on the cost or equity method and are included in accrued income and other 
F-53

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

assets on the Consolidated Balance Sheets. The investments are individually reviewed for impairment on a quarterly basis. Indirect 
private equity and venture capital funds are evaluated by comparing the carrying value to the estimated fair value. The amount by 
which the carrying value exceeds the fair value that is determined to be other-than-temporary impairment is charged to current 
earnings and the carrying value of the investment is written down accordingly. FHLB and FRB stock are recorded at cost (par 
value) and evaluated for impairment based on the ultimate recoverability of the par value. If the Corporation does not expect to 
recover the full par value, the amount by which the par value exceeds the ultimately recoverable value would be charged to current 
earnings and the carrying value of the investment would be written down accordingly.

Derivative Instruments and Hedging Activities

Derivative instruments are carried at fair value in either accrued income and other assets or accrued expenses and other 
liabilities on the Consolidated Balance Sheets. The accounting for changes in the fair value (i.e., gains or losses) of a derivative 
instrument is determined by whether it has been designated and qualifies as part of a hedging relationship and, further, by the type 
of hedging relationship. The Corporation presents derivative instruments at fair value in the Consolidated Balance Sheets on a net 
basis when a right of offset exists, based on transactions with a single counterparty and any cash collateral paid to and/or received 
from that counterparty for derivative contracts that are subject to legally enforceable master netting arrangements. 

The Corporation adopted ASU No. 2017-12 effective January 1, 2018. ASU 2017-12 better aligns the accounting and 
reporting of hedging relationships with the economics of risk management activities and provides administrative reliefs to simplify 
the  application  of  hedge  accounting,  including  expanding  the  application  of  the  shortcut  method,  eliminating  the  separate 
measurement and reporting of hedge ineffectiveness and generally requiring the entire effect of the hedging instrument and the 
hedged item to be presented in the same income statement line item. 

For derivative instruments designated and qualifying as fair value hedges (i.e., hedging the exposure to changes in the 
fair value of an asset or a liability or an identified portion thereof that is attributable to a particular risk), the gain or loss on the 
derivative instrument, as well as the offsetting loss or gain on the hedged item attributable to the hedged risk, are recognized in 
the same consolidated statement of income line that is used to present the earnings effect of the hedged item during the period of 
the change in fair values. For derivative instruments that are designated and qualify as cash flow hedges (i.e., hedging the exposure 
to variability in expected future cash flows that is attributable to a particular risk), the gain or loss on the derivative instrument is 
reported as a component of other comprehensive income and reclassified into earnings in the same consolidated statement of 
income line item as the earnings effect of the hedged item in the same period or periods during which the hedged transaction affects 
earnings. For derivative instruments not designated as hedging instruments, the gain or loss is recognized in current earnings during 
the period of change.

The Corporation’s derivative instruments used for risk management predominately comprise swaps converting fixed-
rate long-term debt to variable rates. An ineffectiveness net gain of $1 million and net loss of $2 million were included in other 
noninterest income in the consolidated statements of income for the years ended December 31, 2017 and 2016, respectively. Under 
ASU 2017-12, beginning January 1, 2018, gains or losses relating to hedge ineffectiveness are no longer separately measured or 
reported.

To qualify for the use of hedge accounting, a derivative must be effective at inception and expected to be continuously 
effective in offsetting the risk being hedged. For derivatives designated as hedging instruments at inception, the Corporation uses 
either the short-cut method or applies statistical regression analysis to assess effectiveness. The short-cut method is used for $1 
billion notional of fair value hedges of medium- and long-term debt. This method allows for the assumption of perfect effectiveness 
and eliminates the requirement to further assess hedge effectiveness on these transactions. For hedge relationships to which the 
Corporation does not apply the short-cut method, statistical regression analysis is used at inception to assess whether the derivative 
used is expected to be highly effective in offsetting changes in the fair value or cash flows of the hedged item. A statistical regression 
or qualitative analysis is performed at each reporting period thereafter to evaluate hedge effectiveness. 

Upon adopting ASU 2017-12, the Corporation elected to change the measurement methodology of all long-haul fair value 
hedges existing at December 31, 2017. The prior period effect of this election was a $1 million reduction to opening retained 
earnings, included in cumulative effect of change in accounting principles in the Consolidated Statements of Shareholders' Equity. 

Further information on the Corporation’s derivative instruments and hedging activities is included in Note 8.

Short-Term Borrowings

Securities sold under agreements to repurchase are treated as collateralized borrowings and are recorded at amounts equal 
to the cash received. The contractual terms of the agreements to repurchase may require the Corporation to provide additional 
collateral if the fair value of the securities underlying the borrowings declines during the term of the agreement.

F-54

 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Financial Guarantees

Certain guarantee contracts or indemnification agreements that contingently require the Corporation, as guarantor, to 
make payments to the guaranteed party are initially measured at fair value and included in accrued expenses and other liabilities 
on the Consolidated Balance Sheets. The subsequent accounting for the liability depends on the nature of the underlying guarantee. 
The release from risk is accounted for under a particular guarantee when the guarantee expires or is settled, or by a systematic and 
rational amortization method.

Further information on the Corporation’s obligations under guarantees is included in Note 8.

Share-Based Compensation

The Corporation recognizes share-based compensation expense using the straight-line method over the requisite service 
period for all stock awards, including those with graded vesting. The requisite service period is the period an employee is required 
to provide service in order to vest in the award, which cannot extend beyond the date at which the employee is no longer required 
to perform any service to receive the share-based compensation (i.e. the retirement-eligible date). Forfeiture of stock awards and 
dividend equivalents are accounted for as they occur.

Certain awards are contingent upon performance and/or market conditions, which affect the number of shares ultimately 
issued.  The  Corporation  periodically  evaluates  the  probable  outcome  of  the  performance  conditions  and  makes  cumulative 
adjustments to compensation expense as appropriate. Market conditions are included in the determination of the fair value of the 
award on the date of grant. Subsequent to the grant date, market conditions have no impact on the amount of compensation expense 
the Corporation will recognize over the life of the award.

Further information on the Corporation’s share-based compensation plans is included in Note 16.

Revenue Recognition

Effective  January  1,  2018,  the  Corporation  adopted  the  provision  of  Financial Accounting  Standards  Board  (FASB)  
Accounting Standards Codification (ASC) Topic 606, "Revenue from Contracts with Customers" (Topic 606), using the modified 
retrospective method applied to all open contracts as of January 1, 2018.

Under Topic 606, card fee revenue from certain products is generally presented net of network costs, including interchange 
costs, surcharge fees and assessment fees, as opposed to the previous presentation of associated network costs in outside processing 
fee expense in the Consolidated Statements of Income. Similar adjustments were made for other revenue streams that resulted in 
certain costs being recognized in the same category as the associated revenues in noninterest income.

The adoption of Topic 606 resulted in decreases of $140 million in card fees and $5 million in service charges on deposits 
accounts, included in noninterest income, and a corresponding $145 million decrease in outside processing fee expense included 
in noninterest expenses, in the Consolidated Statements of Income for 2018.

The Corporation previously deferred recognition of certain treasury management fees included in service charges on 
deposit  accounts  in  the  Consolidated  Statements  of  Income  until  the  amount  of  compensation  was  considered  fixed  and 
determinable. Under the new guidance, the portion of these fees that are based on agreed-upon rates less estimated credits expected 
to be earned by the customer is recognized as services are rendered. As a result, the Corporation recorded a transition adjustment 
of $14 million, after tax, to retained earnings, included in cumulative effect of change in accounting principles in the accompanying 
Consolidated Statements of Changes in Shareholders' Equity. Similar adjustments were made for other revenue streams that resulted 
in an additional cumulative transition after-tax adjustment to retained earnings of $2 million.

Revenue from contracts with customers comprises the noninterest income earned by the Corporation in exchange for 
services provided to customers and are recognized when services are complete or as they are rendered, although contracts are 
generally short-term by nature. Services provided over a period of time are typically transferred to customers evenly over the term 
of the contracts and revenue is recognized evenly over the period services are provided. Contract receivables are included in 
accrued income and other assets on the Consolidated Balance Sheets. Payment terms vary by services offered, and the time between 
completion of performance obligations and payment is typically not significant.

Card Fees

Card fees comprise interchange and other fee income earned on government card, commercial card, debit/automated 
teller machine card and merchant payment processing programs. Card fees are presented net of network costs, as performance 
obligations for card services are limited to transaction processing and settlement with the card network on behalf of the customers. 
Fees for these services are primarily based on interchange rates set by the network and transaction volume. The Corporation also 
provides ongoing card program support services, for which fees are based on contractually agreed prices and customer demand 
for services.

F-55

 
 
 
 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Service Charges on Deposit Accounts

Service  charges  on  deposit  accounts  comprise  charges  on  retail  and  business  accounts,  including  fees  for  treasury 
management services. Treasury management services include transaction-based services related to payment processing, overdrafts, 
non-sufficient funds and other deposit account activity, as well as account management services that are provided over time. 
Business customers can earn credits depending on deposit balances maintained with the Corporation, which may be used to offset 
fees. Fees and credits are based on predetermined, agreed-upon rates.

Fiduciary Income

Fiduciary income includes fees and commissions from asset management, custody, recordkeeping, investment advisory 
and other services provided primarily to personal and institutional trust customers. Revenue is recognized as the services are 
performed and is based either on the market value of the assets managed or the services provided, as well as agreed-upon rates.

Commercial Lending Fees

Commercial lending fees include both revenue from contracts with customers (primarily loan servicing fees) and other 
sources of revenue. Commercial loan servicing fees are based on contractually agreed-upon prices and when the services are 
provided. Other sources of revenue in commercial lending fees primarily include fees assessed on the unused portion of commercial 
lines of credit (unused commitment fees) and syndication arrangements.

Brokerage Fees 

Brokerage fees are commissions earned for facilitating securities transactions for customers, as well as other brokerage 
services provided. Revenue is recognized when services are complete and is based on the type of services provided and agreed-
upon rates. The Corporation pays commissions based on brokerage fee revenue. These are typically recognized when incurred 
because the amortization period is one year or less and are included in salaries and benefits expense in the Consolidated Statements 
of Income.

Other Revenues 

Other revenues, consisting primarily of other retail fees, investment banking fees and insurance commissions, are typically 

recognized when services or transactions are completed and are based on the type of services provided and agreed-upon rates.

Except as discussed above, commissions and other incentives paid to employees are generally based on several internal 

and external metrics and, as a result, are not solely dependent on revenue generating activities.

Defined Benefit Pension and Other Postretirement Costs

Defined benefit pension costs are funded consistent with the requirements of federal laws and regulations. Inherent in 
the determination of defined benefit pension costs are assumptions concerning future events that will affect the amount and timing 
of required benefit payments under the plans. These assumptions include demographic assumptions such as retirement age and 
mortality, a compensation rate increase, a discount rate used to determine the current benefit obligation, form of payment election 
and a long-term expected rate of return on plan assets. Net periodic defined benefit pension expense includes service cost, interest 
cost based on the assumed discount rate, an expected return on plan assets based on an actuarially derived market-related value 
of assets, amortization of prior service cost or credit and amortization of net actuarial gains or losses. The market-related value of 
plan assets is determined by amortizing the current year’s investment gains and losses (the actual investment return net of the 
expected investment return) over 5 years. The amortization adjustment cannot exceed 10 percent of the fair value of assets. Prior 
service costs or credits include the impact of plan amendments on the liabilities and are amortized over the future service periods 
of active employees expected to receive benefits under the plan. Actuarial gains and losses result from experience different from 
that  assumed  and  from  changes  in  assumptions  (excluding  asset  gains  and  losses  not  yet  reflected  in  market-related  value). 
Amortization of actuarial gains and losses is included as a component of net periodic defined benefit pension cost for a year if the 
actuarial net gain or loss exceeds 10 percent of the greater of the projected benefit obligation or the market-related value of plan 
assets. If amortization is required, the excess is amortized over the average remaining service period of participating employees 
expected to receive benefits under the plan. Service costs are included in salaries and benefits expense, while the other components 
of net periodic defined benefit pension expense are included in other noninterest expenses on the Consolidated Statements of 
Income.

Postretirement benefits are recognized in other noninterest expenses on the Consolidated Statements of Income during 
the average remaining service period of participating employees expected to receive benefits under the plan or the average remaining 
future lifetime of retired participants currently receiving benefits under the plan.

The  Corporation  retrospectively  adopted  the  provisions  of ASU  No.  2017-07,  “Compensation  -  Retirement  Benefits 
(Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost” (ASU 2017-07) 
on January 1, 2018, which requires employers to report service cost as part of compensation expense and the other components 
of net benefit cost separately from service cost. As a result, $49 million and $28 million of benefit from the other components of 
F-56

 
 
 
 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

net benefit cost was reclassified from salaries and benefits expense to other noninterest expenses in the Consolidated Statements 
of Income for 2017 and 2016, respectively. The Corporation based the adjustment to the prior periods on amounts disclosed in 
Note 17.

See Note 17 for further information regarding the Corporation’s defined benefit pension and other postretirement plans.

Income Taxes

The provision for income taxes is the sum of income taxes due for the current year and deferred taxes. The Corporation 
classifies interest and penalties on income tax liabilities and, beginning January 1, 2017, excess tax benefits and deficiencies 
resulting from employee stock awards in the provision for income taxes on the Consolidated Statements of Income.

Deferred taxes arise from temporary differences between the income tax basis and financial accounting basis of assets 
and liabilities. Deferred tax assets are evaluated for realization based on available evidence of projected future reversals of existing 
taxable temporary differences, assumptions made regarding future events and, when applicable, state loss carryback capacity. A 
valuation allowance is provided when it is more likely than not that some portion of the deferred tax asset will not be realized.

The Tax Cuts and Jobs Act (the "Act"), enacted on December 22, 2017, reduced the U.S. federal corporate tax rate from 
35 percent to 21 percent. Also, on December 22, 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin 
No. 118 (SAB 118), which provides guidance on accounting for tax effects of the Act. SAB 118 provided a measurement period 
of up to one year from the enactment date to complete the accounting. The amount recorded related to the remeasurement of the 
Corporation's deferred tax balance was a reduction of $99 million, including a provisional adjustment of $107 million recognized 
in 2017 and an $8 million revision to the impact recorded in 2018.

Earnings Per Share

Basic net income per common share is calculated using the two-class method. The two-class method is an earnings 
allocation formula that determines earnings per share for each share of common stock and participating securities according to 
dividends declared (distributed earnings) and participation rights in undistributed earnings. Distributed and undistributed earnings 
are  allocated  between  common  and  participating  security  shareholders  based  on  their  respective  rights  to  receive  dividends. 
Nonvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents are considered 
participating securities (e.g., nonvested restricted stock and certain service-based restricted stock units). Undistributed net losses 
are not allocated to nonvested restricted shareholders, as these shareholders do not have a contractual obligation to fund the losses 
incurred by the Corporation. Net income attributable to common shares is then divided by the weighted-average number of common 
shares outstanding during the period.

Diluted net income per common share is calculated using the more dilutive of either the treasury method or the two-class 
method. The dilutive calculation considers common stock issuable under the assumed exercise of stock options and warrants, as 
well as service- and performance-based restricted stock units granted under the Corporation’s stock plans using the treasury stock 
method, if dilutive. Net income attributable to common shares is then divided by the total of weighted-average number of common 
shares and common stock equivalents outstanding during the period.

Statements of Cash Flows

Cash and cash equivalents are defined as those amounts included in cash and due from banks and interest-bearing deposits 

with banks on the Consolidated Balance Sheets. 

The  Corporation  adopted ASU  No.  2016-15,  “Statement  of  Cash  Flows  (Topic  230):  Classification  of  Certain  Cash 
Receipts and Cash Payments,” (ASU 2016-15) on January 1, 2018 and, as a result, reclassified $18 million and $16 million of 
proceeds from settlement of bank-owned life insurance policies from operating activities to investing activities for 2017 and 2016, 
respectively.

Comprehensive Income (Loss)

The Corporation presents on an annual basis the components of net income and other comprehensive income in two 
separate, but consecutive statements and presents on an interim basis the components of net income and a total for comprehensive 
income in one continuous consolidated statement of comprehensive income. 

Pending Accounting Pronouncements 

In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” (ASU 2016-02), to increase the transparency 
and comparability of lease recognition and disclosure. ASU 2016-02 requires lessees to recognize lease contracts on the balance 
sheet, while recognizing expenses on the income statement in a manner similar to current guidance. The Corporation will adopt 
Topic 842 in the first quarter 2019 for all open leases with a term greater than one year as of the adoption date using the modified 
F-57

 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

retrospective approach and will elect the hindsight practical expedient in determining its lease terms. This is expected to result in 
increases of $330 million and $345 million to total assets and total liabilities, respectively, and a reduction to retained earnings of 
approximately $15 million. The increase to total assets was primarily due to the recognition of a right-of-use asset recorded in 
accrued income and other assets, while the increase in total liabilities was primarily due to recognition of the lease payment liability 
recorded in accrued expenses and other liabilities. A similar increase in assets at December 31, 2018 would have caused a 5-basis-
point decrease in the common equity tier 1 capital (CET1) ratio.

In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of 
Credit Losses on Financial Instruments," (ASU 2016-13), which addresses concerns regarding the perceived delay in recognition 
of credit losses under the existing incurred loss model. The amendment introduces a new, single model for recognizing credit losses 
on all financial instruments presented on a cost basis. Under the new model, entities must estimate current expected credit losses 
by considering all available relevant information, including historical and current conditions, as well as reasonable and supportable 
forecasts  of  future  events. The  update  also  requires  additional  qualitative  and  quantitative  disclosure  to  allow  users  to  better 
understand the credit risk within the portfolio and the methodologies for determining the allowance for credit losses. 

ASU 2016-13 is effective for the Corporation on January 1, 2020 and must be applied using the modified retrospective 
approach with limited exceptions. In preparation, the Corporation has developed new credit estimation models, processes and 
controls. Internal validation of the models is underway and expected to be completed early in 2019. The Corporation has performed 
test runs of the new processes and controls and expects to begin full parallel runs by mid-2019. The impact of the standard will 
depend on the composition of the Corporation’s portfolio as well as economic conditions and forecasts at the time of adoption. 
The Corporation expects to adopt the standard in the first quarter of 2020.

In August 2018, the FASB issued ASU No. 2018-15, "Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 
350-40):  Customer’s Accounting  for  Implementation  Costs  Incurred  in  a  Cloud  Computing Arrangement  That  Is  a  Service 
Contract," (ASU 2018-15), to align the requirements for capitalizing implementation costs in a hosting arrangement that is a service 
contract with the requirements for capitalizing implementation costs relating to internal-use software. The update requires entities 
in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation 
costs to capitalize as an asset and which costs to expense. ASU 2018-15 is effective for the Corporation on January 1, 2020 and 
may be applied using either the retrospective or prospective approach. Early adoption is permitted. The Corporation is currently 
evaluating the impact of adoption. 

In October 2018, the FASB issued ASU No. 2018-16, “Derivatives and Hedging (Topic 815):  Inclusion of the Secured 

Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting 
Purposes,” (ASU 2018-16), to permit the use of SOFR as an eligible benchmark interest rate for hedge accounting. SOFR has 
been identified by the Federal Reserve Board and the Alternative Reference Rates Committee as the preferred alternative 
reference rate to the London Interbank Offered Rate (LIBOR).  The Corporation will adopt ASU 2018-16 prospectively in the 
first quarter of 2019. As of December 31, 2018, there were no active SOFR-based contracts.

F-58

 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 2 – FAIR VALUE MEASUREMENTS

Note 1 contains information about the fair value hierarchy, descriptions of the valuation methodologies and key inputs 
used to measure financial assets and liabilities recorded at fair value, as well as a description of the methods and significant 
assumptions used to estimate fair value disclosures for financial instruments not recorded at fair value in their entirety on a recurring 
basis.

Assets and Liabilities Recorded at Fair Value on a Recurring Basis

The following tables present the recorded amount of assets and liabilities measured at fair value on a recurring basis as 

Total

Level 1

Level 2

Level 3

$

88
43

$

88
43

— $
—

—
—

—
—
—

9
—
—
9
9

—
—
—
—
—
—

—
9,318
9,318

58
189
19
266
9,584

70
186
13
269
—
269

$

$

$

of December 31, 2018 and 2017.

(in millions)
December 31, 2018

Deferred compensation plan assets
Equity securities
Investment securities available-for-sale:

U.S. Treasury and other U.S. government agency securities
Residential mortgage-backed securities (a)

Total investment securities available-for-sale

Derivative assets:

Interest rate contracts
Energy derivative contracts
Foreign exchange contracts
Total derivative assets

Total assets at fair value
Derivative liabilities:

$

$

2,727
9,318
12,045

67
189
19
275
12,451

$

2,727
—
2,727

—
—
—
—
2,858

$

Interest rate contracts
Energy derivative contracts
Foreign exchange contracts

— $
—
—
—
88
88
(a)  Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.

Total derivative liabilities
Deferred compensation plan liabilities
Total liabilities at fair value

70
186
13
269
88
357

$

$

$

$

$

F-59

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Total

Level 1

Level 2

Level 3

$

92

$

92

$

— $

—

(in millions)
December 31, 2017
Trading securities:

Deferred compensation plan assets
Investment securities available-for-sale:

U.S. Treasury and other U.S. government agency securities
Residential mortgage-backed securities (a)
State and municipal securities
Equity and other non-debt securities

Total investment securities available-for-sale

Derivative assets:

Interest rate contracts
Energy derivative contracts
Foreign exchange contracts
Total derivative assets

Total assets at fair value
Derivative liabilities:

2,727
8,124
5
82
10,938

57
93
42
192
11,222

$

$

2,727
—
—
38
2,765

—
—
—
—
2,857

$

Interest rate contracts
Energy derivative contracts
Foreign exchange contracts

— $
—
—
—
92
92
(a)  Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
(b)  Auction-rate securities.

Total derivative liabilities
Deferred compensation plan liabilities
Total liabilities at fair value

59
91
40
190
92
282

$

$

$

$

$

—
8,124
—
—
8,124

43
93
42
178
8,302

59
91
40
190
—
190

$

$

$

—
—
5 (b)
44 (b)
49

14
—
—
14
63

—
—
—
—
—
—

There were no transfers of assets or liabilities recorded at fair value on a recurring basis into or out of Level 1, Level 2 

and Level 3 fair value measurements during the years ended December 31, 2018 and 2017.

F-60

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table summarizes the changes in Level 3 assets measured at fair value on a recurring basis for the years 

ended December 31, 2018 and 2017.

Net Realized/Unrealized Gains (Losses)
(Pretax)

Balance 
at
Beginning
of Period

Change in
Classification
(a)

Recorded in Earnings (b)

Realized

Unrealized

Recorded in
Other
Comprehensive
Income (c)

Sales &
Redemptions

Balance 
at
End of 
Period

$

— $

44

$

— $

— $

— $

(44) $ —

5
44

49

14

7
47

54

—
(44)

(44)

—

—
—

—

—

—
—

—

(5)

—
—

—

—

(5)
—

(5)

—

$

— $
—

— $
—

— $
—

—

—

—

— $
(2)

(2)

(2) $
(1)

(3)

—
—

—

9

5
44

49

(in millions)
Year Ended December 31, 2018

Equity securities
Investment securities available-for-sale:

State and municipal securities (d)
Equity and other non-debt securities (d)

Total investment securities

available-for-sale

Derivative assets:

Interest rate contracts
Year Ended December 31, 2017

Investment securities available-for-sale:

State and municipal securities (d)
Equity and other non-debt securities (d)

$

Total investment securities

available-for-sale

Derivative assets:

Interest rate contracts

3
(a)  Reflects the reclassification of equity securities resulting from the adoption of ASU 2016-01.
(b)  Realized and unrealized gains and losses due to changes in fair value recorded in other noninterest income on the Consolidated Statements 

14

—

—

—

—

11

of Income.

(c)  Recorded in net unrealized holding losses arising during the period in the Consolidated Statements of Comprehensive Income.
(d)  Auction-rate securities.

Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis

The Corporation may be required to record certain assets and liabilities at fair value on a nonrecurring basis. These include 
assets that are recorded at the lower of cost or fair value, and were recognized at fair value since it was less than cost at the end 
of the period.

The following table presents assets recorded at fair value on a nonrecurring basis at December 31, 2018 and 2017. No

liabilities were recorded at fair value on a nonrecurring basis at December 31, 2018 and 2017.

(in millions)
December 31, 2018

Loans:

Commercial
Commercial mortgage
Total assets at fair value

December 31, 2017

Loans:

Commercial
Commercial mortgage

Total assets at fair value

Level 3

$

$

$

$

33
2
35

111
5
116

Level 3 assets recorded at fair value on a nonrecurring basis at December 31, 2018 and 2017 included loans for which a 
specific allowance was established based on the fair value of collateral. The unobservable inputs were the additional adjustments 
applied by management to the appraised values to reflect such factors as non-current appraisals and revisions to estimated time 
to sell. These adjustments are determined based on qualitative judgments made by management on a case-by-case basis and are 
not quantifiable inputs, although they are used in the determination of fair value.

F-61

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Estimated Fair Values of Financial Instruments Not Recorded at Fair Value on a Recurring Basis

The Corporation typically holds the majority of its financial instruments until maturity and thus does not expect to realize 
many of the estimated fair value amounts disclosed. The disclosures also do not include estimated fair value amounts for items 
that are not defined as financial instruments, but which have significant value. These include such items as core deposit intangibles, 
the  future  earnings  potential  of  significant  customer  relationships  and  the  value  of  trust  operations  and  other  fee  generating 
businesses. The Corporation believes the imprecision of an estimate could be significant.

The carrying amount and estimated fair value of financial instruments not recorded at fair value in their entirety on a 

recurring basis on the Corporation’s Consolidated Balance Sheets are as follows:

(in millions)
December 31, 2018
Assets

Cash and due from banks
Interest-bearing deposits with banks
Loans held-for-sale
Total loans, net of allowance for loan losses (a)
Customers’ liability on acceptances outstanding
Restricted equity investments
Nonmarketable equity securities (b)

Liabilities

Demand deposits (noninterest-bearing)
Interest-bearing deposits
Customer certificates of deposit

Total deposits

Short-term borrowings
Acceptances outstanding
Medium- and long-term debt

Credit-related financial instruments
December 31, 2017
Assets

Cash and due from banks
Interest-bearing deposits with banks
Investment securities held-to-maturity
Loans held-for-sale
Total loans, net of allowance for loan losses (a)
Customers’ liability on acceptances outstanding
Restricted equity investments
Nonmarketable equity securities (b)

Liabilities

$

$

Carrying
Amount

Total

Estimated Fair Value
Level 2
Level 1

Level 3

$

$

1,390
3,171
3
49,492
4
248
6

28,690
24,740
2,131
55,561
44
4
6,463
(57)

1,438
4,407
1,266
4
48,461
2
207
6

$

$

1,390
3,171
3
48,889
4
248
11

28,690
24,740
2,100
55,530
44
4
6,436
(57)

1,438
4,407
1,246
4
48,153
2
207
9

$

1,390
3,171
—
—
4
248

— $
—
3
—
—
—

—
—
—
48,889
—
—

—
—
—
—
44
4
—
—

28,690
24,740
2,100
55,530
—
—
6,436
—

—
—
—
—
—
—
—
(57)

$

1,438
4,407
—
—
—
2
207

— $
—
1,246
4
—
—
—

—
—
—
—
48,153
—
—

Total deposits

Demand deposits (noninterest-bearing)
Interest-bearing deposits
Customer certificates of deposit

—
32,071
—
23,667
—
2,165
—
57,903
—
10
—
2
—
4,622
Credit-related financial instruments
(67)
(67)
(a)  Included $35 million and $116 million of impaired loans recorded at fair value on a nonrecurring basis at December 31, 2018 and 2017, 

Short-term borrowings
Acceptances outstanding
Medium- and long-term debt

32,071
23,667
2,142
57,880
10
2
4,636
(67)

32,071
23,667
2,142
57,880
—
—
4,636
—

—
—
—
—
10
2
—
—

respectively.

(b)  Certain investments that are measured at fair value using the net asset value have not been classified in the fair value hierarchy. The fair 
value amounts presented in the table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the 
Consolidated Balance Sheets.

F-62

 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 3 - INVESTMENT SECURITIES

A summary of the Corporation’s investment securities follows:

(in millions)
December 31, 2018
Investment securities available-for-sale:

Amortized
Cost

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair Value

U.S. Treasury and other U.S. government agency securities $
Residential mortgage-backed securities (a)
Total investment securities available-for-sale

$

2,732
9,493
12,225

December 31, 2017
Investment securities available-for-sale:

U.S. Treasury and other U.S. government agency securities $
Residential mortgage-backed securities (a)
State and municipal securities
Equity and other non-debt securities

Total investment securities available-for-sale (b)

Investment securities held-to-maturity (c):

Residential mortgage-backed securities (a)

$

$

2,743
8,230
5
83
11,061

1,266

$

$

$

$

$

14
22
36

$

$

— $
22
—
1
23

$

— $

19
197
216

16
128
—
2
146

20

$

$

$

$

$

2,727
9,318
12,045

2,727
8,124
5
82
10,938

1,246

(a)  Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
(b)  Included auction-rate securities at amortized cost and fair value of $51 million and $49 million, respectively, as of December 31, 2017.
(c)  The amortized cost of investment securities held-to-maturity included the net unrealized losses of $9 million at December 31, 2017 related 

to securities transferred from available-for-sale in 2014, which are included in accumulated other comprehensive loss.

In connection with the adoption of ASU 2016-01 on January 1, 2018, cumulative unrealized gains and losses on available-
for-sale equity and other non-debt securities were reclassified to retained earnings and the carrying value was reclassified to other 
short-term investments. Additionally, the Corporation transferred residential mortgage-backed securities with a book value of 
approximately  $1.3  billion  from  held-to-maturity  to  available-for-sale  upon  the  adoption  of  ASU  2017-12.  For  additional 
information about the adoption of ASU 2016-01 and ASU 2017-12, refer to Note 1.

A summary of the Corporation’s investment securities in an unrealized loss position as of December 31, 2018 and 2017

follows: 

(in millions)
December 31, 2018

Less than 12 Months
Unrealized
Losses

Fair
Value

Temporarily Impaired
12 Months or more
Fair
Value

Unrealized
Losses

Total

Fair
Value

Unrealized
Losses

U.S. Treasury and other U.S. government

agency securities

$

— $

Residential mortgage-backed securities (a)
Total temporarily impaired securities

1,008
$ 1,008

December 31, 2017

U.S. Treasury and other U.S. government

agency securities

Residential mortgage-backed securities (a)
State and municipal securities (b)
Equity and other non-debt securities (b)
Total temporarily impaired securities

$ 2,727
3,845
—
—
$ 6,572

$

$

$

— $ 1,457
6,412
$ 7,869

9
9

$

$

19
188
207

16
32
—
—
48

$

— $

4,003
5
44
$ 4,052

2
127

$

—
125
— (c)

$ 1,457
7,420
$ 8,877

$ 2,727
7,848
5
44
$ 10,624

$

$

$

$

19
197
216

16
157
— (c)

2
175

(a)  Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
(b)  Primarily auction-rate securities.
(c)  Unrealized losses less than $0.5 million.

F-63

 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

At December 31, 2018, the Corporation had 375 securities in an unrealized loss position with no credit impairment, 
including 16 U.S. Treasury securities and 359 residential mortgage-backed securities. The unrealized losses for these securities 
resulted from changes in market interest rates and liquidity, not changes in credit quality. The Corporation ultimately expects full 
collection of the carrying amount of these securities, does not intend to sell the securities in an unrealized loss position, and it is 
not more-likely-than-not that the Corporation will be required to sell the securities in an unrealized loss position prior to recovery 
of amortized cost. The Corporation does not consider these securities to be other-than-temporarily impaired at December 31, 2018.

Sales, primarily from repositioning $1.3 billion of lower-yielding treasury securities, calls and write-downs of investment 
securities  available-for-sale  resulted  in  the  following  gains  and  losses  recorded  in  net  securities  losses  on  the  Consolidated 
Statements of Income, computed based on the adjusted cost of the specific security. There were no securities gains or losses for 
the years ended December 31, 2017 and 2016.

(in millions)
Year Ended December 31
Securities gains
Securities losses
Net securities losses

2018

2
(21)
(19)

$

$

The following table summarizes the amortized cost and fair values of debt securities by contractual maturity. Securities 
with multiple maturity dates are classified in the period of final maturity. Expected maturities will differ from contractual maturities 
because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

(in millions)
December 31, 2018
Contractual maturity
Within one year
After one year through five years
After five years through ten years
After ten years

Total investment securities

Amortized Cost

Fair Value

$

$

100
2,647
1,522
7,956
12,225

$

$

100
2,642
1,502
7,801
12,045

Included in the contractual maturity distribution in the table above were residential mortgage-backed securities with a 
total amortized cost of $9.5 billion and a fair value of $9.3 billion. The actual cash flows of mortgage-backed securities may differ 
from contractual maturity as the borrowers of the underlying loans may exercise prepayment options.

At December 31, 2018, investment securities with a carrying value of $396 million were pledged where permitted or 
required by law to secure $274 million of liabilities, primarily public and other deposits of state and local government agencies 
and derivative instruments.

F-64

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 4 – CREDIT QUALITY AND ALLOWANCE FOR CREDIT LOSSES

The following table presents an aging analysis of the recorded balance of loans.

(in millions)
December 31, 2018
Business loans:
Commercial
Real estate construction:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction

Commercial mortgage:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage

Lease financing
International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

Total retail loans

Total loans
December 31, 2017
Business loans:
Commercial
Real estate construction:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction

Commercial mortgage:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage

Lease financing
International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

Total retail loans

Loans Past Due and Still Accruing

30-59 
Days

60-89 
Days

90 Days
or More

Total

Nonaccrual
Loans

Current
Loans

Total 
Loans

$

34

$

26

$

8

$

68

$

141

$

31,767

$ 31,976

6
6
12

4
32
36
—
—
82

11

4
1
5
16
98

$

—
—
—

—
5
5
—
—
31

3

1
—
1
4
35

$

—
—
—

—
8
8
—
—
16

—

—
—
—
—
16

6
6
12

4
45
49
—
—
129

14

5
1
6
20
$ 149

$

—
—
—

2
18
20
2
3
166

36

19
—
19
55
221

2,681
384
3,065

1,737
7,300
9,037
505
1,010
45,384

2,687
390
3,077

1,743
7,363
9,106
507
1,013
45,679

1,920

1,970

1,741
748
2,489
4,409
49,793

1,765
749
2,514
4,484
$ 50,163

$

79

$

134

$

12

$ 225

$

309

$

30,526

$ 31,060

$

$

3
4
7

14
27
41
—
13
140

10

5
4
9
19
159

—
—
—

—
22
22
—
—
34

—

—
1
1
1
35

3
4
7

14
55
69
—
13
314

12

6
5
11
23
$ 337

$

—
—
—

9
22
31
4
6
350

31

21
—
21
52
402

2,627
327
2,954

1,808
7,251
9,059
464
964
43,967

2,630
331
2,961

1,831
7,328
9,159
468
983
44,631

1,945

1,988

1,789
733
2,522
4,467
48,434

1,816
738
2,554
4,542
$ 49,173

$

—
—
—

—
6
6
—
—
140

2

1
—
1
3
143

F-65

$

$

Total loans
(a)  Primarily loans to real estate developers.
(b)  Primarily loans secured by owner-occupied real estate.

$

 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table presents loans by credit quality indicator, based on internal risk ratings assigned to each business 
loan at the time of approval and subjected to subsequent reviews, generally at least annually, and to pools of retail loans with 
similar risk characteristics.

(in millions)
December 31, 2018
Business loans:
Commercial
Real estate construction:

Commercial Real Estate business line (e)
Other business lines (f)

Total real estate construction

Commercial mortgage:

Commercial Real Estate business line (e)
Other business lines (f)

Total commercial mortgage

Lease financing
International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

Total retail loans

Total loans
December 31, 2017
Business loans:
Commercial
Real estate construction:

Commercial Real Estate business line (e)
Other business lines (f)

Total real estate construction

Commercial mortgage:

Commercial Real Estate business line (e)
Other business lines (f)

Total commercial mortgage

Lease financing
International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

Total retail loans

Pass (a)

Internally Assigned Rating
Special
Mention (b)

Substandard (c)

Nonaccrual (d)

Total

$

30,817

$

464

$

554

$

141

$

31,976

2,664
382
3,046

1,682
7,157
8,839
500
996
44,198

1,931

1,738
748
2,486
4,417
48,615

$

23
8
31

14
118
132
3
4
634

3

—
1
1
4
638

$

—
—
—

45
70
115
2
10
681

—

8
—
8
8
689

$

—
—
—

2
18
20
2
3
166

36

19
—
19
55
221

$

2,687
390
3,077

1,743
7,363
9,106
507
1,013
45,679

1,970

1,765
749
2,514
4,484
50,163

29,263

$

591

$

897

$

309

$

31,060

2,630
327
2,957

1,759
7,099
8,858
440
946
42,464

1,955

1,786
737
2,523
4,478
46,942

$

—
4
4

20
115
135
23
11
764

2

1
1
2
4
768

$

—
—
—

43
92
135
1
20
1,053

—

8
—
8
8
1,061

$

—
—
—

9
22
31
4
6
350

31

21
—
21
52
402

$

2,630
331
2,961

1,831
7,328
9,159
468
983
44,631

1,988

1,816
738
2,554
4,542
49,173

$

$

$

Total loans
(a) 
(b) 

Includes all loans not included in the categories of special mention, substandard or nonaccrual.
Special mention loans are accruing loans that have potential credit weaknesses that deserve management’s close attention, such as loans to borrowers who may be experiencing 
financial difficulties that may result in deterioration of repayment prospects from the borrower at some future date. This category is generally consistent with the "special mention" 
category as defined by regulatory authorities.
Substandard loans are accruing loans that have a well-defined weakness, or weaknesses, such as loans to borrowers who may be experiencing losses from operations or inadequate 
liquidity of a degree and duration that jeopardizes the orderly repayment of the loan. Substandard loans also are distinguished by the distinct possibility of loss in the future if 
these weaknesses are not corrected. This category is generally consistent with the "substandard" category as defined by regulatory authorities.

(c) 

(d)  Nonaccrual loans are loans for which the accrual of interest has been discontinued. For further information regarding nonaccrual loans, refer to the Nonperforming Assets 
subheading in Note 1 - Basis of Presentation and Accounting Policies. A significant majority of nonaccrual loans are generally consistent with the "substandard" category and 
the remainder are generally consistent with the "doubtful" category as defined by regulatory authorities.

(e)  Primarily loans to real estate developers.
(f) 

Primarily loans secured by owner-occupied real estate.

F-66

 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table summarizes nonperforming assets.

(in millions)
Nonaccrual loans
Reduced-rate loans (a)
Total nonperforming loans
Foreclosed property (b)
Total nonperforming assets
(a)  There  were  no  reduced-rate  business  loans  at  both  December 31,  2018  and  2017.  Reduced-rate  retail  loans  were  $8  million  at  both 

December 31, 2018
221
$
8
229
1
230

December 31, 2017
402
$
8
410
5
415

$

$

December 31, 2018 and 2017.

(b)  There were no foreclosed residential real estate properties at December 31, 2018 and $4 million at December 31, 2017.

There were $1 million of retail loans secured by residential real estate properties in process of foreclosure included in 

nonaccrual loans at both December 31, 2018 and 2017.

Allowance for Credit Losses

The following table details the changes in the allowance for loan losses and related loan amounts.

(in millions)

Business
Loans

2018
Retail
Loans

Total

Business
Loans

2017
Retail
Loans

Total

Business
Loans

2016
Retail
Loans

Total

Years Ended December 31
Allowance for loan losses:
Balance at beginning of

period

$

Loan charge-offs
Recoveries on loans

previously charged-off
Net loan (charge-offs)

recoveries

Provision for loan losses
Foreign currency translation

adjustment

Balance at end of period

$

661
(99)

47

(52)
19

(1)
627

$

$

51
(4)

5

1
(8)

—
44

$

712
(103)

$

$

682
(143)

48
(6)

$

730
(149)

$

$

579
(207)

52

(51)
11

(1)
671

$

50

(93)
71

1
661

$

$

7

1
2

—
51

57

(92)
73

1
712

$

63

(144)
246

1
682

$

$

55
(7)

5

(2)
(5)

—
48

$

634
(214)

68

(146)
241

1
730

$

As a percentage of total loans

1.37% 0.97%

1.34%

1.48%

1.12%

1.45%

1.53%

1.08%

1.49%

December 31
Allowance for loan losses:
Individually evaluated for

impairment

Collectively evaluated for

impairment
Total allowance for loan

losses

Loans:

Individually evaluated for

impairment

Collectively evaluated for

impairment
Total loans evaluated for

impairment

$

27

$ — $

27

600

$

627

$

44

44

644

$

671

$

240

$

36

$

276

$

$

$

67

$ — $

67

$

86

$

3

$

89

594

661

$

51

51

443

$

34

645

712

477

$

$

$

$

596

682

$

45

48

566

$

48

641

730

614

$

$

45,439

4,448

49,887

44,188

4,508

48,696

44,058

4,416

48,474

$45,679

$ 4,484

$50,163

$ 44,631

$ 4,542

$ 49,173

$ 44,624

$ 4,464

$ 49,088

F-67

 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Changes in the allowance for credit losses on lending-related commitments, included in accrued expenses and other 

liabilities on the Consolidated Balance Sheets, are summarized in the following table.

(in millions)
Years Ended December 31
Balance at beginning of period
Charge-offs on lending-related commitments (a)
Provision for credit losses on lending-related commitments
Balance at end of period
(a)  Charge-offs result from the sale of unfunded lending-related commitments.

Individually Evaluated Impaired Loans

2018

2017

2016

$

$

42
—
(12)
30

$

$

41
—
1
42

$

$

45
(11)
7
41

The following table presents additional information regarding individually evaluated impaired loans.

(in millions)
December 31, 2018
Business loans:
Commercial
Commercial mortgage:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage

International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

Total retail loans (c)

Total individually evaluated impaired loans
December 31, 2017
Business loans:
Commercial
Commercial mortgage:

$

$

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage

International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

Total retail loans (c)

Impaired
Loans with
No Related
Allowance

Recorded Investment In:
Impaired
Loans with
Related
Allowance

Total
Impaired
Loans

Unpaid
Principal
Balance

Related
Allowance
for Loan
Losses

$

50

$

130

$

180

$

227

$

39
2
41
2
93

16

11
1
12
28
121

$

—
16
16
1
147

8

—
—
—
8
155

$

39
18
57
3
240

24

11
1
12
36
276

$

49
23
72
8
307

25

13
1
14
39
346

$

105

$

267

$

372

$

460

$

39
3
42
—
147

14

1
22
23
6
296

8

40
25
65
6
443

22

49
29
78
17
555

22

11
1
12
26
173

—
—
—
8
304

11
1
12
34
477

14
2
16
38
593

24

—
3
3
—
27

—

—
—
—
—
27

63

—
3
3
1
67

—

—
—
—
—
67

Total individually evaluated impaired loans
(a)  Primarily loans to real estate developers.
(b)  Primarily loans secured by owner-occupied real estate.
(c)  Individually evaluated retail loans generally have no related allowance for loan losses, primarily due to policy which results in direct write-

$

$

$

$

$

downs of most restructured retail loans.

F-68

 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table presents information regarding average individually evaluated impaired loans and the related interest 

recognized. Interest income recognized for the period primarily related to performing restructured loans.

2018

Individually Evaluated Impaired Loans
2017

2016

Average
Balance for
the Period

Interest
Income
Recognized
for the Period

Average
Balance for
the Period

Interest
Income
Recognized
for the Period

Average
Balance for
the Period

Interest
Income
Recognized
for the Period

$

262

$

5

$

451

$

8

$

550

$

(in millions)
Years Ended December 31
Business loans:
Commercial
Commercial mortgage:

Commercial Real Estate

business line (a)

Other business lines (b)

Total commercial mortgage

International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

40
23
63
4
329

21

11
1
12
33

Total retail loans
Total individually evaluated impaired

loans

$
(a)  Primarily loans to real estate developers.
(b)  Primarily loans secured by owner-occupied real estate.

362

$

10

—
1
1
—
11

—

—
—
—
—

11

4
—
4
—
9

—

—
—
—
—

21
31
52
8
511

24

13
3
16
40

2
—
2
—
10

—

—
—
—
—

9
31
40
18
608

15

13
4
17
32

9

$

551

$

10

$

640

$

F-69

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Troubled Debt Restructurings 

The following tables detail the recorded balance at December 31, 2018 and 2017 of loans considered to be TDRs that 
were restructured during the years ended December 31, 2018 and 2017, by type of modification. In cases of loans with more than 
one type of modification, the loans were categorized based on the most significant modification.

2018

2017

Type of Modification

Type of Modification

Principal
Deferrals (a)

Interest
Rate
Reductions

Total
Modifications

Principal
Deferrals (a)

Interest
Rate
Reductions

AB Note
Restructures
(b)

Total
Modifications

$

27

$

— $

27

$

77

$

18 $

21 $

—
2
2
1
30

—
—
—
—
—

—
2
2
1
30

37
3
40
—
117

—
—
—
—
18

—
—
—
—
21

116

37
3
40
—
156

(in millions)

Years Ended December 31
Business loans:
Commercial
Commercial mortgage:

Commercial Real Estate business line (c)
Other business lines (d)

Total commercial mortgage

International

Total business loans

Retail loans:
Consumer:

Home equity (e)

—
30

3
3 $

3
33

1
118

2
20 $

—
21 $

3
159

$

$

Total loans
(a)  Primarily represents loan balances where terms were extended 90 days or more at or above contractual interest rates.
(b)  Loan restructurings whereby the original loan is restructured into two notes: an "A" note, which generally reflects the portion of the modified 

$

$

loan which is expected to be collected; and a "B" note, which is fully charged off. 

(c)  Primarily loans to real estate developers. 
(d)  Primarily loans secured by owner-occupied real estate.
(e)  Includes bankruptcy loans for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt.

At December 31, 2018 and 2017, commitments to lend additional funds to borrowers whose terms have been modified 

in TDRs totaled $20 million and $31 million, respectively.

The majority of the modifications considered to be TDRs that occurred during the years ended December 31, 2018 and 
2017  were  principal  deferrals.  The  Corporation  charges  interest  on  principal  balances  outstanding  during  deferral  periods. 
Additionally, none of the modifications involved forgiveness of principal. As a result, the current and future financial effects of 
the recorded balance of loans considered to be TDRs that were restructured during the years ended December 31, 2018 and 2017
were insignificant.

On  an  ongoing  basis,  the  Corporation  monitors  the  performance  of  modified  loans  to  their  restructured  terms.  The 

allowance for loan losses continues to be reassessed on the basis of an individual evaluation of the loan.

For principal deferrals, incremental deterioration in the credit quality of the loan, represented by a downgrade in the risk 
rating of the loan, for example, due to missed interest payments or a reduction of collateral value, is considered a subsequent 
default. For interest rate reductions and AB note restructures, a subsequent payment default is defined in terms of delinquency, 
when a principal or interest payment is 90 days past due. There were no subsequent defaults of principal deferrals during the year 
ended December 31, 2018 and $3 million during the year ended December 31, 2017. There were no subsequent payment defaults 
of interest rate reductions or AB note restructures during the December 31, 2018 and 2017.

NOTE 5 - SIGNIFICANT GROUP CONCENTRATIONS OF CREDIT RISK

Concentrations of credit risk may exist when a number of borrowers are engaged in similar activities, or activities in the 
same geographic region, and have similar economic characteristics that would cause them to be similarly impacted by changes in 
economic or other conditions. Concentrations of both on-balance sheet and off-balance sheet credit risk are controlled and monitored 
as part of credit policies. The Corporation is a regional financial services holding company with a geographic concentration of its 
on-balance-sheet and off-balance-sheet activities in Michigan, California and Texas.

As outlined below, the Corporation has a concentration of credit risk with the automotive industry. Loans to automotive 
dealers and to borrowers involved with automotive production are reported as automotive, as management believes these loans 
have similar economic characteristics that might cause them to react similarly to changes in economic conditions. This aggregation 

F-70

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

involves the exercise of judgment. Included in automotive production are: (a) original equipment manufacturers and Tier 1 and 
Tier 2 suppliers that produce components used in vehicles and whose primary revenue source is automotive-related (“primary” 
defined as greater than 50%) and (b) other manufacturers that produce components used in vehicles and whose primary revenue 
source is automotive-related. Loans less than $1 million and loans recorded in the Small Business loan portfolio were excluded 
from the definition. Outstanding loans, included in commercial loans on the Consolidated Balance Sheets, and total exposure 
(outstanding loans, unused commitments and standby letters of credit) to companies related to the automotive industry were as 
follows:

(in millions)
December 31
Automotive loans:

Production
Dealer

Total automotive loans
Total automotive exposure:

Production
Dealer

Total automotive exposure

2018

2017

$

$

$

$

1,331
8,097
9,428

2,396
10,044
12,440

$

$

$

$

1,344
7,592
8,936

2,439
9,405
11,844

Further, the Corporation’s portfolio of commercial real estate loans, which includes real estate construction and commercial 

mortgage loans, was as follows.

(in millions)
December 31
Real estate construction loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction loans

Commercial mortgage loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage loans
Total commercial real estate loans
Total unused commitments on commercial real estate loans

(a)  Primarily loans to real estate developers.
(b)  Primarily loans secured by owner-occupied real estate.

NOTE 6 - PREMISES AND EQUIPMENT

A summary of premises and equipment by major category follows:

(in millions)
December 31
Land
Buildings and improvements
Furniture and equipment

Total cost

Less: Accumulated depreciation and amortization

Net book value

2018

2017

2,687
390
3,077

1,743
7,363
9,106
12,183
3,146

$

$
$

2,630
331
2,961

1,831
7,328
9,159
12,120
3,018

2018

2017

85
842
492
1,419
(944)
475

$

$

85
813
484
1,382
(916)
466

$

$
$

$

$

The Corporation conducts a portion of its business from leased facilities and leases certain equipment. Rental expense 
for leased properties and equipment amounted to $75 million, $78 million and $80 million in 2018, 2017 and 2016, respectively. 

F-71

 
 
 
 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

As of December 31, 2018, future minimum rental payments under operating leases were as follows:

(in millions)
Years Ending December 31
2019
2020
2021
2022
2023
Thereafter
Total

$

$

67
59
50
40
34
127
377

NOTE 7 - GOODWILL AND CORE DEPOSIT INTANGIBLES

The following table summarizes the carrying value of goodwill by reporting unit for the years ended December 31, 2018

and 2017.

(in millions)
December 31
Business Bank
Retail Bank
Wealth Management

Total

2018

2017

473
101
61
635

$

$

380
194
61
635

$

$

The Corporation performs its annual evaluation of goodwill impairment in the third quarter of each year and on an interim 
basis if events or changes in circumstances between annual tests indicate goodwill might be impaired. In 2018 and 2017, the annual 
test of goodwill impairment was performed as of the beginning of the third quarter. In 2018, a qualitative assessment was performed 
resulting in the Corporation determining goodwill was not impaired as it was more likely than not the fair value of each reporting 
unit exceeded its carrying value. In 2017, a quantitative assessment was performed and the estimated fair values of all reporting 
units exceeded their carrying amounts, including goodwill, indicating goodwill was not impaired.

During 2018 the Corporation reorganized certain reporting structures. As a result, Small Business, formerly a component 
of the Retail Bank, became a component of the Business Bank. Accordingly, the Corporation reallocated $93 million of goodwill 
from the Retail Bank to the Business Bank. The Corporation subsequently performed an additional qualitative impairment analysis 
and again determined that it was more-likely-than-not that the fair value of each reporting unit exceeded its carrying value and 
that performing a quantitative impairment test was not necessary. There have been no events since the annual test performed in 
the third quarter 2018 that would indicate that it was more-likely-than-not that goodwill had become impaired.

A summary of core deposit intangible carrying value and related accumulated amortization follows:

(in millions)
December 31
Gross carrying amount
Accumulated amortization

Net carrying amount

2018

2017

$

$

34
(30)
4

$

$

34
(28)
6

The Corporation recorded amortization expense related to the core deposit intangible of $2 million for both the years 

ended December 31, 2018 and 2017. At December 31, 2018, estimated future amortization expense was as follows:

(in millions)
Years Ending December 31
2019
2020
2021

Total

$

$

2
1
1
4

F-72

 
  
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 8 - DERIVATIVE AND CREDIT-RELATED FINANCIAL INSTRUMENTS

In the normal course of business, the Corporation enters into various transactions involving derivative and credit-related 
financial instruments to manage exposure to fluctuations in interest rate, foreign currency and other market risks and to meet the 
financing needs of customers (customer-initiated derivatives). These financial instruments involve, to varying degrees, elements 
of market and credit risk. Market and credit risk are included in the determination of fair value.

Market risk is the potential loss that may result from movements in interest rates, foreign currency exchange rates or 
energy commodity prices that cause an unfavorable change in the value of a financial instrument. The Corporation manages this 
risk by establishing monetary exposure limits and monitoring compliance with those limits. Market risk inherent in interest rate 
and energy contracts entered into on behalf of customers is mitigated by taking offsetting positions, except in those circumstances 
when the amount, tenor and/or contract rate level results in negligible economic risk, whereby the cost of purchasing an offsetting 
contract is not economically justifiable. The Corporation mitigates most of the inherent market risk in foreign exchange contracts 
entered into on behalf of customers by taking offsetting positions and manages the remainder through individual foreign currency 
position limits and aggregate value-at-risk limits. These limits are established annually and positions are monitored quarterly. 
Market risk inherent in derivative instruments held or issued for risk management purposes is typically offset by changes in the 
fair value of the assets or liabilities being hedged.

Credit risk is the possible loss that may occur in the event of nonperformance by the counterparty to a financial instrument. 
The Corporation attempts to minimize credit risk arising from customer-initiated derivatives by evaluating the creditworthiness 
of each customer, adhering to the same credit approval process used for traditional lending activities and obtaining collateral as 
deemed necessary. Derivatives with dealer counterparties are either cleared through a clearinghouse or settled directly with a single 
counterparty.  For  derivatives  settled  directly  with  dealer  counterparties,  the  Corporation  utilizes  counterparty  risk  limits  and 
monitoring procedures, as well as master netting arrangements and bilateral collateral agreements to facilitate the management of 
credit risk. Master netting arrangements effectively reduce credit risk by permitting settlement of positive and negative positions 
and offset cash collateral held with the same counterparty on a net basis. Bilateral collateral agreements require daily exchange of 
cash or highly rated securities issued by the U.S. Treasury or other U.S. government entities to collateralize amounts due to either 
party. At December 31, 2018, counterparties with bilateral collateral agreements had pledged $1 million of marketable investment 
securities and deposited $180 million of cash with the Corporation to secure the fair value of contracts in an unrealized gain 
position, and the Corporation had posted $2 million of cash as collateral for contracts in an unrealized loss position. For those 
counterparties not covered under bilateral collateral agreements, collateral is obtained, if deemed necessary, based on the results 
of management’s credit evaluation of the counterparty. Collateral varies, but may include cash, investment securities, accounts 
receivable, equipment or real estate. Included in the fair value of derivative instruments are credit valuation adjustments reflecting 
counterparty credit risk. These adjustments are determined by applying a credit spread for the counterparty or the Corporation, as 
appropriate, to the total expected exposure of the derivative. There were no derivative instruments with credit-risk-related contingent 
features that were in a liability position at December 31, 2018. 

Derivative Instruments

Derivative instruments utilized by the Corporation are negotiated over-the-counter and primarily include swaps, caps 
and floors, forward contracts and options, each of which may relate to interest rates, energy commodity prices or foreign currency 
exchange rates. Swaps are agreements in which two parties periodically exchange cash payments based on specified indices applied 
to a specified notional amount until a stated maturity. Caps and floors are agreements which entitle the buyer to receive cash 
payments based on the difference between a specified reference rate or price and an agreed strike rate or price, applied to a specified 
notional amount until a stated maturity. Forward contracts are over-the-counter agreements to buy or sell an asset at a specified 
future date and price. Options are similar to forward contracts except the purchaser has the right, but not the obligation, to buy or 
sell the asset during a specified period or at a specified future date.

Over-the-counter contracts are tailored to meet the needs of the counterparties involved and, therefore, contain a greater 
degree of credit risk and liquidity risk than exchange-traded contracts, which have standardized terms and readily available price 
information. The Corporation reduces exposure to market and liquidity risks from over-the-counter derivative instruments entered 
into for risk management purposes, and transactions entered into to mitigate the market risk associated with customer-initiated 
transactions, by conducting hedging transactions with investment grade domestic and foreign financial institutions and subjecting 
counterparties to credit approvals, limits and collateral monitoring procedures similar to those used in making other extensions of 
credit. In addition, certain derivative contracts executed bilaterally with a dealer counterparty in the over-the-counter market are 
cleared through a clearinghouse, whereby the clearinghouse becomes the counterparty to the transaction.

F-73

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The  following  table  presents  the  composition  of  the  Corporation’s  derivative  instruments  held  or  issued  for  risk 
management purposes or in connection with customer-initiated and other activities at December 31, 2018 and 2017. The table 
excludes commitments and warrants accounted for as derivatives.

December 31, 2018

Fair Value

December 31, 2017

Fair Value

Notional/
Contract
Amount (a)

Gross
Derivative
Assets

Gross
Derivative
Liabilities

Notional/
Contract
Amount (a)

Gross
Derivative
Assets

Gross
Derivative
Liabilities

$

2,625

$

— $

2

$

1,775

$

— $

302
2,927

885
885
13,115
14,885

278
278
2,094
2,650

1,095
18,630
21,557

1
1

—
1
66
67

—
26
163
189

18
274
275

(45)

(174)

56

650
2,425

635
635
13,119
14,389

164
164
1,519
1,847

1,884
18,120
20,545

1
3

1
—
67
68

26
—
160
186

12
266
269

(45)

(1)

223

$

—
—

—
—
57
57

—
11
82
93

42
192
192

(49)

(1)

142

2

2
4

—
—
57
57

11
—
80
91

38
186
190

(49)

(39)

102

(in millions)
Risk management purposes

Derivatives designated as hedging instruments

Interest rate contracts:

Swaps - fair value - receive fixed/

pay floating

Derivatives used as economic hedges

Foreign exchange contracts:
Spot, forwards and swaps
Total risk management purposes
Customer-initiated and other activities

Interest rate contracts:

Caps and floors written
Caps and floors purchased
Swaps

Total interest rate contracts
Energy contracts:

Caps and floors written
Caps and floors purchased
Swaps

Total energy contracts
Foreign exchange contracts:

$

Spot, forwards, options and swaps

Total customer-initiated and other activities
Total gross derivatives
Amounts offset in the Consolidated Balance

Sheets:

Netting adjustment - Offsetting derivative

assets/liabilities

Netting adjustment - Cash collateral

received/posted

Net derivatives included in the Consolidated

Balance Sheets (b)

Amounts not offset in the Consolidated Balance

Sheets:

Marketable securities pledged under
bilateral collateral agreements
Net derivatives after deducting amounts not
offset in the Consolidated Balance Sheets

(1)

—

(3)

(24)

$

55

$

223

$

139

$

78

(a)  Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual 
cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts 
subject to credit or market risk and are not reflected in the Consolidated Balance Sheets.

(b)   Net derivative assets are included in accrued income and other assets and net derivative liabilities are included in accrued expenses and 
other liabilities on the Consolidated Balance Sheets. Included in the fair value of net derivative assets and net derivative liabilities are 
credit valuation adjustments reflecting counterparty credit risk and credit risk of the Corporation. The fair value of net derivative assets 
included credit valuation adjustments for counterparty credit risk of $2 million and $4 million at December 31, 2018 and 2017, respectively.

Risk Management

The Corporation's derivative instruments used for managing interest rate risk currently comprise swaps converting fixed 

rate long-term debt to variable rates. 

The following table details the effects of fair value hedging on the Consolidated Statements of Income.

F-74

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

(in millions)
Years Ended December 31
Total interest on medium-and long-term debt (a)

Fair value hedging relationships:

Interest rate contracts:

Hedged items
Derivatives designated as hedging instruments

(a)  Includes the effects of hedging.

Interest on Medium- and Long-Term Debt

2018

2017

$

144

$

74
(7)

76

79
(32)

The  following  table  summarizes  the  expected  weighted  average  remaining  maturity  of  the  notional  amount  of  risk 
management interest rate swaps, the carrying amount of the related hedged item and the weighted average interest rates associated 
with amounts expected to be received or paid on interest rate swap agreements as of December 31, 2018 and 2017.

(dollar amounts in millions)
December 31, 2018
Swaps - fair value - receive fixed/pay floating rate

Derivative 
Notional
Amount

Carrying
Value of
Hedged
Items (a)

Remaining
Maturity
(in years)

Receive Rate

Pay Rate (b)

Weighted Average

Medium- and long-term debt designation

$

2,625

$

2,663

December 31, 2017
Swaps - fair value - receive fixed/pay floating rate

Medium- and long-term debt designation

1,775

1,822

3.9

4.6

3.40%

3.45%

3.26

2.35

(a)  Included $49 million and $56 million of cumulative hedging adjustments at December 31, 2018 and 2017, respectively, which 

included $8 million and $9 million, respectively, of hedging adjustment on a discontinued hedging relationship.

(b)  Variable rates paid on receive fixed swaps are based on one- and six-month LIBOR rates in effect at December 31, 2018 and six-month 

LIBOR rates in effect at December 31, 2017.

Foreign  exchange  rate  risk  arises  from  changes  in  the  value  of  certain  assets  and  liabilities  denominated  in  foreign 
currencies. The Corporation employs spot and forward contracts in addition to swap contracts to manage exposure to these and 
other risks. These instruments are used as economic hedges and net gains or losses are included in other noninterest income in the 
Consolidated Statements of Income.

Customer-Initiated and Other

The Corporation enters into derivative transactions at the request of customers and generally takes offsetting positions 
with dealer counterparties to mitigate the inherent market risk. Income primarily results from the spread between the customer 
derivative and the offsetting dealer position. 

For customer-initiated foreign exchange contracts where offsetting positions have not been taken, the Corporation manages 
the remaining inherent market risk through individual foreign currency position limits and aggregate value-at-risk limits. These 
limits are established annually and reviewed quarterly. For those customer-initiated derivative contracts which were not offset or 
where the Corporation holds a position within the limits described above, the Corporation recognized no net gains and losses in 
other noninterest income in the Consolidated Statements of Income for the years ended December 31 2018 and 2017, respectively.

Fair values of customer-initiated and other derivative instruments represent the net unrealized gains or losses on such 
contracts and are recorded in the Consolidated Balance Sheets. Changes in fair value are recognized in the Consolidated Statements 
of Income. The net gains recognized in income on customer-initiated derivative instruments, net of the impact of offsetting positions, 
were as follows:

(in millions)
Years Ended December 31
Interest rate contracts
Energy contracts
Foreign exchange contracts

Total

Location of Gain
Other noninterest income
Other noninterest income
Foreign exchange income

$

$

2018

2017

26
4
47
77

$

$

24
2
45
71

F-75

 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Credit-Related Financial Instruments

The Corporation issues off-balance sheet financial instruments in connection with commercial and consumer lending 
activities. The Corporation’s credit risk associated with these instruments is represented by the contractual amounts indicated in 
the following table.

(in millions)
December 31
Unused commitments to extend credit:

Commercial and other
Bankcard, revolving check credit and home equity loan commitments
Total unused commitments to extend credit

Standby letters of credit
Commercial letters of credit

2018

2017

$

$
$

24,266
3,001
27,267
3,244
39

$

$
$

22,636
2,833
25,469
3,228
39

The  Corporation  maintains  an  allowance  to  cover  probable  credit  losses  inherent  in  lending-related  commitments, 
including unused commitments to extend credit, letters of credit and financial guarantees. The allowance for credit losses on 
lending-related commitments, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, was $30 
million and $42 million at December 31, 2018 and 2017 respectively. 

Unused Commitments to Extend Credit

Commitments to extend credit are legally binding agreements to lend to a customer, provided there is no violation of any 
condition established in the contract. These commitments generally have fixed expiration dates or other termination clauses and 
may  require  payment  of  a  fee.  Since  many  commitments  expire  without  being  drawn  upon,  the  total  contractual  amount  of 
commitments  does  not  necessarily  represent  future  cash  requirements  of  the  Corporation.  Commercial  and  other  unused 
commitments are primarily variable rate commitments. The allowance for credit losses on lending-related commitments included 
$24 million and $27 million at December 31, 2018 and 2017, respectively, for probable credit losses inherent in the Corporation’s 
unused commitments to extend credit.

Standby and Commercial Letters of Credit

Standby  letters  of  credit  represent  conditional  obligations  of  the  Corporation  which  guarantee  the  performance  of  a 
customer to a third party. Standby letters of credit are primarily issued to support public and private borrowing arrangements, 
including commercial paper, bond financing and similar transactions. Commercial letters of credit are issued to finance foreign 
or domestic trade transactions. These contracts expire in decreasing amounts through the year 2028. The Corporation may enter 
into participation arrangements with third parties that effectively reduce the maximum amount of future payments which may be 
required  under  standby  and  commercial  letters  of  credit. These  risk  participations  covered  $136  million  and  $127  million  at 
December 31, 2018 and 2017, respectively, of the $3.3 billion of standby and commercial letters of credit outstanding at both 
December 31, 2018 and 2017.

The carrying value of the Corporation’s standby and commercial letters of credit, included in accrued expenses and other 
liabilities on the Consolidated Balance Sheets, totaled $34 million at December 31, 2018, including $28 million in deferred fees 
and $6 million in the allowance for credit losses on lending-related commitments. At December 31, 2017, the comparable amounts 
were $40 million, $25 million and $15 million, respectively.

The following table presents a summary of criticized standby and commercial letters of credit at December 31, 2018 and 
December 31, 2017. The Corporation's criticized list is consistent with the Special Mention, Substandard and Doubtful categories 
defined by regulatory authorities. The Corporation manages credit risk through underwriting, periodically reviewing and approving 
its credit exposures using Board committee approved credit policies and guidelines.

(dollar amounts in millions)
Total criticized standby and commercial letters of credit
As a percentage of total outstanding standby and commercial letters of credit

December 31, 2018
49
$
1.5%

December 31, 2017
88
$
2.7%

Other Credit-Related Financial Instruments

The Corporation enters into credit risk participation agreements, under which the Corporation assumes credit exposure 
associated with a borrower’s performance related to certain interest rate derivative contracts. The Corporation is not a party to the 
interest rate derivative contracts and only enters into these credit risk participation agreements in instances in which the Corporation 
is also a party to the related loan participation agreement for such borrowers. The Corporation manages its credit risk on the credit 
risk participation agreements by monitoring the creditworthiness of the borrowers, which is based on the normal credit review 
process had it entered into the derivative instruments directly with the borrower. The notional amount of such credit risk participation 

F-76

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

agreement reflects the pro-rata share of the derivative instrument, consistent with its share of the related participated loan. As of 
December 31, 2018 and 2017, the total notional amount of the credit risk participation agreements was approximately $703 million
and $549 million, respectively, and the fair value was insignificant for both periods. The maximum estimated exposure to these 
agreements, as measured by projecting a maximum value of the guaranteed derivative instruments, assuming 100 percent default 
by all obligors on the maximum values, was $7 million and insignificant at December 31, 2018 and 2017, respectively. In the event 
of default, the lead bank has the ability to liquidate the assets of the borrower, in which case the lead bank would be required to 
return a percentage of the recouped assets to the participating banks. As of December 31, 2018, the weighted average remaining 
maturity of outstanding credit risk participation agreements was 3.5 years.

NOTE 9 - VARIABLE INTEREST ENTITIES (VIEs)

The Corporation evaluates its interest in certain entities to determine if these entities meet the definition of a VIE and 
whether the Corporation is the primary beneficiary and should consolidate the entity based on the variable interests it held both 
at inception and when there is a change in circumstances that requires a reconsideration.

The Corporation holds ownership interests in funds in the form of limited partnerships or limited liability companies 
(LLCs) investing in affordable housing projects that qualify for the low-income housing tax credit (LIHTC). The Corporation also 
directly invests in limited partnerships and LLCs which invest in community development projects which generate similar tax 
credits to investors (other tax credit entities). As an investor, the Corporation obtains income tax credits and deductions from the 
operating losses of these tax credit entities. These tax credit entities meet the definition of a VIE; however, the Corporation is not 
the primary beneficiary of the entities, as the general partner or the managing member has both the power to direct the activities 
that most significantly impact the economic performance of the entities and the obligation to absorb losses or the right to receive 
benefits that could be significant to the entities.

The Corporation accounts for its interests in LIHTC entities using the proportional amortization method. Exposure to 
loss as a result of the Corporation’s involvement with LIHTC entities at December 31, 2018 was limited to $425 million. Ownership 
interests in other tax credit entities are accounted for under either the cost or equity method. Exposure to loss as a result of the 
Corporation's involvement in other tax credit entities at December 31, 2018 was limited to $6 million. 

Investment balances, including all legally binding commitments to fund future investments, are included in accrued 
income and other assets on the Consolidated Balance Sheets. A liability is recognized in accrued expenses and other liabilities on 
the  Consolidated  Balance  Sheets  for  all  legally  binding  unfunded  commitments  to  fund  tax  credit  entities  ($165  million  at 
December 31, 2018). Amortization and other write-downs of LIHTC investments are presented on a net basis as a component of 
the provision for income taxes on the Consolidated Statements of Income, while amortization and write-downs of other tax credit 
investments are recorded in other noninterest income. The income tax credits and deductions are recorded as a reduction of income 
tax expense and a reduction of federal income taxes payable.

The Corporation provided no financial or other support that was not contractually required to any of the above VIEs 

during the years ended December 31, 2018, 2017 and 2016.

The following table summarizes the impact of these tax credit entities on line items on the Corporation’s Consolidated 

Statements of Income.

(in millions)
Years Ended December 31
Other noninterest income:

Sales (amortization) of other tax credit investments

Provision for income taxes:

Amortization of LIHTC Investments
Low income housing tax credits
Other tax benefits related to tax credit entities

Total provision for income taxes

2018

2017

2016

$

$

5

$

65
(62)
(14)
(11) $

2

$

67
(63)
(24)
(20) $

(1)

66
(62)
(26)
(22)

For further information on the Corporation’s consolidation policy, see Note 1.

F-77

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 10 - DEPOSITS

At December 31, 2018, the scheduled maturities of certificates of deposit and other deposits with a stated maturity were 

as follows:

(in millions)
Years Ending December 31
2019
2020
2021
2022
2023
Thereafter
Total

A maturity distribution of domestic certificates of deposit of $100,000 and over follows:

(in millions)
December 31
Three months or less
Over three months to six months
Over six months to twelve months
Over twelve months

Total

2018

363
146
278
297
1,084

$

$

$

$

$

$

1,614
434
38
17
11
25
2,139

2017

355
207
319
130
1,011

The aggregate amount of domestic certificates of deposit that meet or exceed the current FDIC insurance limit of $250,000 
was $543 million and $462 million at December 31, 2018 and 2017, respectively. All foreign office time deposits of $8 million
and $15 million at December 31, 2018 and 2017, respectively, were in denominations of $250,000 or more.

NOTE 11 - SHORT-TERM BORROWINGS

Federal funds purchased and securities sold under agreements to repurchase generally mature within one to four days 
from the transaction date. Other short-term borrowings, which may consist of borrowed securities and short-term notes, generally 
mature within one to 120 days from the transaction date. 

At December 31, 2018, Comerica Bank (the Bank), a wholly-owned subsidiary of the Corporation, had pledged loans 

totaling $22.8 billion which provided for up to $18.9 billion of available collateralized borrowing with the FRB.

F-78

 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table provides a summary of short-term borrowings.

(dollar amounts in millions)
December 31, 2018

Amount outstanding at year-end
Weighted average interest rate at year-end
Maximum month-end balance during the year
Average balance outstanding during the year
Weighted average interest rate during the year

December 31, 2017

Amount outstanding at year-end
Weighted average interest rate at year-end
Maximum month-end balance during the year
Average balance outstanding during the year
Weighted average interest rate during the year

December 31, 2016

Amount outstanding at year-end
Weighted average interest rate at year-end
Maximum month-end balance during the year
Average balance outstanding during the year
Weighted average interest rate during the year

$

$

$

$

$

$

NOTE 12 - MEDIUM- AND LONG-TERM DEBT

Medium- and long-term debt is summarized as follows:

(in millions)
December 31
Parent company

Subordinated notes:

Federal Funds Purchased
and Securities Sold Under
Agreements to Repurchase

Other
Short-term
Borrowings

$

$

$

$

$

$

44
2.39%
182
59
1.91%

10
1.43 %
41
20
1.02 %

25
0.54 %
25
15
0.47 %

2018

2017

3.80% subordinated notes due 2026 (a)

$

250

$

Medium-term notes:

2.125% notes due 2019 (a)
3.70% notes due 2023 (a)

Total medium-term notes

Total parent company
Subsidiaries

Subordinated notes:

4.00% subordinated notes due 2025 (a)
7.875% subordinated notes due 2026 (a)

Total subordinated notes
Medium-term notes:

2.50% notes due 2020 (a)

FHLB advances:

Floating-rate based on FHLB auction rate due 2026
Floating-rate based on FHLB auction rate due 2028

Total FHLB advances

—
—%
250
3
1.75%

—
— %

1,024
257
1.15 %

—
— %

501
123
0.45 %

255

347
—
347
602

347
208
555

665

2,800
—
2,800
4,020
4,622

348
861
1,209
1,459

343
198
541

663

2,800
1,000
3,800
5,004
6,463

Total subsidiaries
Total medium- and long-term debt
(a)  The fixed interest rates on these notes have been swapped to a variable rate and designated in a hedging relationship. Accordingly, carrying 

$

$

value has been adjusted to reflect the change in the fair value of the debt as a result of changes in the benchmark rate.

Subordinated notes with remaining maturities greater than one year qualify as Tier 2 capital. 

The Bank is a member of the FHLB, which provides short- and long-term funding to its members through advances 
collateralized by real-estate related assets. In the first quarter 2018, the Bank borrowed an additional $1 billion of 10-year, floating-
rate FHLB advances due January 26, 2028. The interest rate on the FHLB advances resets between four and eight weeks, based 
F-79

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

on the FHLB auction rate. At December 31, 2018, the weighted-average rate on the FHLB advances was 2.55%. Each note may 
be prepaid in full, without penalty, at each scheduled reset date. Borrowing capacity is contingent upon the amount of collateral 
available to be pledged to the FHLB. At December 31, 2018, $15.7 billion of real estate-related loans were pledged to the FHLB 
as blanket collateral for current and potential future borrowings of approximately $5.0 billion.

In the third quarter 2018, the Corporation issued $850 million of 3.70% senior notes maturing in 2023, swapped to a 

floating rate at 30-day LIBOR plus 80 basis points.

Unamortized debt issuance costs deducted from the carrying amount of medium- and long-term debt totaled $8 million

and $5 million at December 31, 2018 and 2017, respectively.

At December 31, 2018, the principal maturities of medium- and long-term debt were as follows:

(in millions)
Years Ending December 31
2019
2020
2021
2022
2023
Thereafter
Total

$

$

350
675
—
—
850
4,550
6,425

NOTE 13 - SHAREHOLDERS’ EQUITY

On July 6, 2018, the Board of Governors of the Federal Reserve System issued a statement announcing that, consistent 
with the recently enacted Economic Growth, Regulatory Relief and Consumer Protection Act (EGRRCPA), bank holding companies 
with less than $100 billion in total assets are no longer subject to certain regulations and reporting requirements, such as Dodd-
Frank Act stress testing and the Comprehensive Capital Analysis and Review, effective immediately.

Repurchases of common stock under the equity repurchase program authorized in 2010 by the Board of Directors of the 
Corporation totaled 14.8 million shares at an average price paid of $89.21 in 2018, 7.3 million shares at an average price paid of 
$72.44 per share in 2017 and 6.6 million shares at an average price paid of $46.09 per share in 2016. There is no expiration date 
for the Corporation's equity repurchase program. During the year ended December 31, 2018, the Corporation repurchased $1.3 
billion under the equity repurchase program.

At December 31, 2018, the Corporation had no outstanding warrants as all remaining warrants to purchase common stock 
expired during the fourth quarter of 2018. Approximately 585,000, 1.8 million and 2.3 million shares of common stock were issued 
upon exercise of warrants in 2018, 2017 and 2016, respectively. 

At December 31, 2018, the Corporation had 4.0 million shares of common stock reserved for stock option exercises and 
restricted stock unit vesting and 869,000 shares of restricted stock outstanding to employees and directors under share-based 
compensation plans.

F-80

 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 14 - ACCUMULATED OTHER COMPREHENSIVE LOSS

The following table presents a reconciliation of the changes in the components of accumulated other comprehensive loss 
and details the components of other comprehensive income (loss) for the year ended December 31, 2018, 2017 and 2016, including 
the amount of income tax expense (benefit) allocated to each component of other comprehensive income (loss).

(in millions)
Years Ended December 31
Accumulated net unrealized (losses) gains on investment securities:

2018

2017

2016

Balance at beginning of period, net of tax

$

(101) $

(33) $

Cumulative effect of change in accounting principle
Net unrealized holding losses arising during the period
Less: Benefit for income taxes

Net unrealized holding losses arising during the period, net of tax

Less:

Net realized losses included in net securities losses
Less:  Benefit for income taxes

Reclassification adjustment for net securities losses included in net income,

net of tax

Less:

Net losses realized as a yield adjustment in interest on investment securities
Less:  Benefit for income taxes

Reclassification adjustment for net losses realized as a yield adjustment

included in net income, net of tax

Change in net unrealized losses on investment securities, net of tax
Reclassification of certain deferred tax effects (a)

Balance at end of period, net of tax

Accumulated defined benefit pension and other postretirement plans

adjustment:
Balance at beginning of period, net of tax

Actuarial (loss) gain arising during the period
Prior service credit arising during the period

Net defined benefit pension and other postretirement adjustment arising

during the period

Less: (Benefit) provision for income taxes

Net defined benefit pension and other postretirement adjustment arising

during the period, net of tax

Amounts recognized in other noninterest expense:

Amortization of actuarial net loss
Amortization of prior service credit

Total amounts recognized in other noninterest expense
Less: Provision for income taxes

Adjustment for amounts recognized as other components of net benefit cost

during the period, net of tax

Change in defined benefit pension and other postretirement plans adjustment,

net of tax

Reclassification of certain deferred tax effects (a)

Balance at end of period, net of tax

Total accumulated other comprehensive loss at end of period, net of tax

$

$

$

$

1
(69)
(16)
(53)

(20)
(5)

(15)

—
—

—
(81)
(27)
(54)

—
—

—

(3)
(1)

—
(38)
—
(138) $

(2)
(52)
(16)
(101) $

(350) $

(350) $

(191)
—

(191)
(44)

(147)

61
(27)
34
8

26

72
—

72
17

55

51
(27)
24
8

16

(121)
—
(471) $
(609) $

71
(71)
(350) $
(451) $

(a)  Amounts reclassified to retained earnings due to early adoption of ASU 2018-02. For further information, refer to Note 1.

9

—
(70)
(26)
(44)

—
—

—

(3)
(1)

(2)
(42)
—
(33)

(438)

(134)
234

100
37

63

46
(7)
39
14

25

88
—
(350)
(383)

F-81

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 15 - NET INCOME PER COMMON SHARE

Basic and diluted net income per common share are presented in the following table.

(in millions, except per share data)
Years Ended December 31
Basic and diluted

Net income
Less: Income allocated to participating securities
Net income attributable to common shares

Basic average common shares

Basic net income per common share

Basic average common shares
Dilutive common stock equivalents:

Net effect of the assumed exercise of stock options
Net effect of the assumed exercise of warrants

Diluted average common shares

Diluted net income per common share

2018

2017

2016

$

$

$

$

$

$

1,235
8
1,227

168

$

$

743
5
738

174

7.31

$

4.23

$

168

2
1
171

174

3
1
178

7.20

$

4.14

$

477
4
473

172

2.74

172

2
3
177

2.68

The following average shares related to outstanding options to purchase shares of common stock were not included in 
the computation of diluted net income per common share because the options were anti-dilutive for the period. There were no anti-
dilutive options for the year ended December 31, 2017.

(shares in millions)
Years Ended December 31
Average outstanding options
Range of exercise prices

NOTE 16 - SHARE-BASED COMPENSATION 

2018
0.2
$95.25

2016
3.3
$37.26 - $59.86

Share-based compensation expense is charged to salaries and benefits expense on the Consolidated Statements of Income. 
The components of share-based compensation expense for all share-based compensation plans and related tax benefits are as 
follows:

(in millions)
Years Ended December 31
Total share-based compensation expense

Related tax benefits recognized in net income

2018

2017

2016

$

$

48

11

$

$

39

14

$

$

34

13

The following table summarizes unrecognized compensation expense for all share-based plans.

(dollar amounts in millions)
Total unrecognized share-based compensation expense

Weighted-average expected recognition period (in years)

December 31, 2018

$

40

2.5

The Corporation has share-based compensation plans under which it awards shares of restricted stock units to executive 
officers,  directors  and  key  personnel,  and  stock  options  to  executive  officers  and  key  personnel  of  the  Corporation  and  its 
subsidiaries. Additionally, the Corporation has awarded restricted stock and restricted stock units to executive officers, directors 
and key personnel under previous share-based compensation plans that remain unvested. Restricted stock and restricted stock units 
fully vest after a period ranging from three years to five years, and stock options fully vest after four years. The maturity of each 
option is determined at the date of grant; however, no options may be exercised later than ten years from the date of grant. The 
options may have restrictions regarding exercisability. The plans provide for a grant of up to 6.1 million common shares, plus 
shares under certain plans that are forfeited, expire or are canceled, which become available for re-grant. At December 31, 2018, 
over 6 million shares were available for grant.

F-82

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The Corporation used a binomial model to value stock options granted in the periods presented. Option valuation models 
require several inputs, including the expected stock price volatility, and changes in input assumptions can materially affect the fair 
value estimates. The model used may not necessarily provide a reliable single measure of the fair value of stock options. The risk-
free interest rate assumption used in the binomial option-pricing model as outlined in the table below was based on the federal 
ten-year treasury interest rate. The expected dividend yield was based on the historical and projected long-term dividend yield 
patterns  of  the  Corporation’s  common  shares.  Expected  volatility  assumptions  considered  both  the  historical  volatility  of  the 
Corporation’s common stock over a ten-year period and implied volatility based on actively traded options on the Corporation’s 
common stock with pricing terms and trade dates similar to the stock options granted. Expected option life was based on historical 
exercise activity over the contractual term of the option grant (10 years), excluding certain forced transactions.

The  estimated  weighted-average  grant-date  fair  value  per  option  and  the  underlying  binomial  option-pricing  model 

assumptions are summarized in the following table:

Years Ended December 31
Weighted-average grant-date fair value per option
Weighted-average assumptions:
 Risk-free interest rates
 Expected dividend yield
Expected volatility factors of the market price of
   Comerica common stock
Expected option life (in years)

2018

2017

2016

$

30.32

$

19.61

$

9.94

2.63%
3.00

36
7.4

2.47%
3.00

34
7.0

2.01%
3.00

38
6.9

A summary of the Corporation’s stock option activity and related information for the year ended December 31, 2018

follows:

Weighted-Average

Number of
Options
(in thousands)

Exercise Price
per Share

Remaining
Contractual
Term (in years)

Aggregate
Intrinsic Value
(in millions)

Outstanding-January 1, 2018

Granted
Forfeited or expired
Exercised

Outstanding-December 31, 2018
Exercisable-December 31, 2018

4,173
196
(24)
(1,402)
2,943
1,707

$

$

40.06
95.25
49.75
37.86
44.70
38.62

5.6
4.3

$
$

76
51

The aggregate intrinsic value of outstanding options shown in the table above represents the total pretax intrinsic value 

at December 31, 2018, based on the Corporation’s closing stock price of $68.69 at December 31, 2018.

The total intrinsic value of stock options exercised was $81 million, $104 million and $46 million for the years ended 

December 31, 2018, 2017 and 2016, respectively.

A summary of the Corporation’s restricted stock activity and related information for the year ended December 31, 2018

follows:

Outstanding-January 1, 2018

Forfeited
Vested

Outstanding-December 31, 2018

Number of
Shares
(in thousands)

Weighted-Average
Grant-Date Fair 
Value per Share

1,243
(44)
(330)
869

$

$

43.59
44.05
41.55
44.34

The total fair value of restricted stock awards that fully vested was $14 million, $19 million and $22 million for the years 

ended December 31, 2018, 2017 and 2016, respectively.

A summary of the Corporation's restricted stock unit activity and related information for the year ended December 31, 

2018 follows:

F-83

 
 
 
  
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Outstanding-January 1, 2018

Granted
Forfeited
Vested

Outstanding-December 31, 2018

Service-Based Units

Performance-Based Units

Number of
Units
(in thousands)

Weighted-Average
Grant-Date Fair 
Value per Share

Number of
Units
(in thousands)

Weighted-Average
Grant-Date Fair 
Value per Share

$

199
194
(26)
—
367

43.00
96.55
86.54
—
68.14

$

718
184
(1)
(239)
662

42.39
92.80
93.26
41.59
56.64

The total fair value of restricted stock units that fully vested was $10 million, $10 million and $11 million for the years 

ended December 31, 2018, 2017 and 2016, respectively.

The Corporation expects to satisfy the exercise of stock options, the vesting of restricted stock units and future grants of 
restricted stock by issuing shares of common stock out of treasury. At December 31, 2018, the Corporation held 68.1 million shares 
in treasury.

For further information on the Corporation’s share-based compensation plans, refer to Note 1.

NOTE 17 - EMPLOYEE BENEFIT PLANS

Defined Benefit Pension and Postretirement Benefit Plans

The Corporation has a qualified and non-qualified defined benefit pension plan. Prior to January 1, 2017, the plans were 
in effect for substantially all salaried employees hired before January 1, 2007. In October 2016, the Corporation modified its 
defined benefit pension plans to freeze final average pay benefits as of December 31, 2016, other than for participants who were 
age 60 or older as of December 31, 2016, and added a cash balance plan provision effective January 1, 2017. Active pension plan 
participants 60 years or older as of December 31, 2016 receive the greater of the final average pay formula or the frozen final 
average pay benefit as of December 31, 2016 plus the cash balance benefit earned after January 1, 2017. Employees participating 
in the retirement account plan as of December 31, 2016 were eligible to participate in the cash balance pension plan effective 
January 1, 2017. Benefits earned under the cash balance pension formula, in the form of an account balance, include contribution 
credits based on eligible pay earned each month, age and years of service and monthly interest credits based on the 30-year Treasury 
rate.

The Corporation’s postretirement benefit plan provides postretirement health care and life insurance benefits for retirees 
as of December 31, 1992. The plan also provides certain postretirement health care and life insurance benefits for a limited number 
of retirees who retired prior to January 1, 2000. For all other employees hired prior to January 1, 2000, a nominal benefit is provided. 
Employees hired on or after January 1, 2000 and prior to January 1, 2007 are eligible to participate in the plan on a full contributory 
basis until Medicare-eligible based on age and service. Employees hired on or after January 1, 2007 are not eligible to participate 
in the plan. The Corporation funds the pre-1992 retiree plan benefits with bank-owned life insurance.

F-84

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table sets forth reconciliations of plan assets and the projected benefit obligation, the weighted-average 
assumptions used to determine year-end benefit obligations, and the amounts recognized in accumulated other comprehensive 
income (loss) for the Corporation’s defined benefit pension plans and postretirement benefit plan at December 31, 2018 and 2017. 
The Corporation used a measurement date of December 31, 2018 for these plans.

(dollar amounts in millions)
Change in fair value of plan assets:
Fair value of plan assets at January 1
Actual return on plan assets
Employer contributions
Benefits paid
Fair value of plan assets at December 31
Change in projected benefit obligation:
Projected benefit obligation at January 1
Service cost
Interest cost
Actuarial (gain) loss
Benefits paid
Projected benefit obligation at December 31
Accumulated benefit obligation
Funded status at December 31 (a) (b)
Weighted-average assumptions used:
Discount rate
Rate of compensation increase
Healthcare cost trend rate:

Cost trend rate assumed for next year
Rate to which the cost trend rate is assumed to

decline (the ultimate trend rate)

Year when rate reaches the ultimate trend rate

Amounts recognized in accumulated other

comprehensive income (loss) before income taxes:

Defined Benefit Pension Plans

Qualified

Non-Qualified

Postretirement
Benefit Plan

2018

2017

2018

2017

2018

2017

$ 2,747
(167)
—
(122)
$ 2,458

$ 2,061
29
75
(142)
(122)
$ 1,901
$ 1,893
557
$

$ 2,453
396
—
(102)
$ 2,747

$ 1,902
29
78
154
(102)
$ 2,061
$ 2,052
686
$

$ — $ — $

—
—
—

—
—
—

$ — $ — $

$

212
2
8
—
(11)
211
$
$
209
$ (211)

$

201
2
8
12
(11)
212
$
$
209
$ (212)

$

$
$
$

60
(1)
1
(4)
56

51
—
2
(3)
(4)
46
46
10

$

$

$

$
$
$

62
2
1
(5)
60

55
—
2
(1)
(5)
51
51
9

4.37%
4.00

3.74%
3.75

4.37%
4.00

3.74%
3.75

4.26%
n/a

3.55%
n/a

n/a

n/a
n/a

n/a

n/a
n/a

n/a

n/a
n/a

n/a

n/a
n/a

6.50

4.50
2027

6.50

4.50
2027

Net actuarial loss
Prior service credit
Balance at December 31
(a)  Based on projected benefit obligation for defined benefit pension plans and accumulated benefit obligation for postretirement benefit plan.
(b)  The Corporation recognizes the overfunded and underfunded status of the plans in accrued income and other assets and accrued expenses 

$ (548)
159
$ (389)

$ (687)
140
$ (547)

(19)
1
(18)

(19)
1
(18)

(85)
42
(43)

(76)
34
(42)

$

$

$

$

$

$

$

$

and other liabilities, respectively, on the Consolidated Balance Sheets.

n/a - not applicable

Because the non-qualified defined benefit pension plan has no assets, the accumulated benefit obligation exceeded the 

fair value of plan assets at December 31, 2018 and December 31, 2017. 

The following table details the changes in plan assets and benefit obligations recognized in other comprehensive income 

(loss) for the year ended December 31, 2018.

(in millions)
Actuarial (loss) gain arising during the period
Amortization of net actuarial loss
Amortization of prior service credit
Total recognized in other comprehensive income (loss)

$

$

Defined Benefit Pension Plans

Qualified

Non-Qualified

Postretirement
Benefit Plan

Total

(190) $
51
(19)
(158) $

— $

9
(8)
1

$

(1) $
1
—
— $

(191)
61
(27)
(157)

F-85

 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Components of net periodic defined benefit cost and postretirement benefit cost, the actual return on plan assets and the 

weighted-average assumptions used were as follows:

(dollar amounts in millions)
Years Ended December 31
Service cost (a)

Other components of net benefit (credit) cost:

Interest cost
Expected return on plan assets
Amortization of prior service credit
Amortization of net loss
Total other components of net benefit (credit) cost (b)

Net periodic defined benefit (credit) cost
Actual return on plan assets
Actual rate of return on plan assets
Weighted-average assumptions used:
Discount rate
Expected long-term return on plan assets
Rate of compensation increase
(a)  Included in salaries and benefits expense on the Consolidated Statements of Income.
(b)  Included in other noninterest expenses on the Consolidated Statements of Income.
n/a - not applicable

$
$
(6.21)% 16.48%

3.74 %
6.50
3.75

4.23%
6.50
3.50

Defined Benefit Pension Plans

2018
29

$

Qualified
2017
29

$

2016
31

$

2018
2

$

Non-Qualified
2017
2

$

$

2016
3

75
(165)
(19)
51
(58)
$ (29)
$ (167)

78
(159)
(19)
43
(57)
(28)
396

$
$

87
(163)
(2)
38
(40)
(9)
200
8.66%

4.53%
6.75
3.75

8
—
(8)
9
9
11
n/a
n/a

$

$

8
—
(8)
8
8
10
n/a
n/a

$

10
—
(5)
7
12
15
n/a
n/a

3.74%
n/a
3.75

4.23%
n/a
3.50

4.53%
n/a
3.75

(dollar amounts in millions)
Years Ended December 31
Other components of net benefit cost:

Interest cost
Expected return on plan assets
Amortization of net loss

Net periodic postretirement benefit cost
Actual return on plan assets
Actual rate of return on plan assets
Weighted-average assumptions used:
Discount rate
Expected long-term return on plan assets
Healthcare cost trend rate:
Cost trend rate assumed
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)
Year that the rate reaches the ultimate trend rate

Postretirement Benefit Plan
2017

2016

2018

$

2
(3)
1
$ —
(1)
$
(2.05)%

$

$
$

$

2
(3)
1
— $
$

2
3.52%

3.55 %
5.00

3.92%
5.00

6.50
4.50
2027

6.50
4.50
2027

3
(4)
1
—
2
2.83%

4.53%
5.00

7.00
5.00
2027

The expected long-term rate of return of plan assets is the average rate of return expected to be realized on funds invested 
or expected to be invested over the life of the plan, which has an estimated duration of approximately 11 years as of December 31, 
2018. The expected long-term rate of return on plan assets is set after considering both long-term returns in the general market 
and long-term returns experienced by the assets in the plan. The returns on the various asset categories are blended to derive one 
long-term rate of return. The Corporation reviews its pension plan assumptions on an annual basis with its actuarial consultants 
to determine if assumptions are reasonable and adjusts the assumptions to reflect changes in future expectations.

The estimated portion of balances remaining in accumulated other comprehensive income (loss) that are expected to be 

recognized as a component of net periodic benefit cost in the year ended December 31, 2019 are as follows:

(in millions)
Net loss
Prior service credit

Defined Benefit Pension Plans

Non-Qualified
8
$
(8)

Postretirement
Benefit Plan

Total

$

$

1
—

43
(27)

Qualified

34
(19)

$

F-86

 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Assumed healthcare cost trend rates have a significant effect on the amounts reported for the postretirement benefit plan. 
A one-percentage-point change in 2018 assumed healthcare and prescription drug cost trend rates would result in a two-percentage-
point change in the postretirement benefit obligation.

Plan Assets

The Corporation’s overall investment goals for the qualified defined benefit pension plan are to maintain a portfolio of 
assets  of  appropriate  liquidity  and  diversification;  to  generate  investment  returns  (net  of  operating  costs)  that  are  reasonably 
anticipated to maintain the plan’s fully funded status or to reduce a funding deficit, after taking into account various factors, 
including reasonably anticipated future contributions and expense and the interest rate sensitivity of the plan’s assets relative to 
that of the plan’s liabilities; and to generate investment returns (net of operating costs) that meet or exceed a customized benchmark 
as defined in the plan investment policy. Derivative instruments are permissible for hedging and transactional efficiency, but only 
to the extent that the derivative use enhances the efficient execution of the plan’s investment policy. The plan does not directly 
invest in securities issued by the Corporation and its subsidiaries. The Corporation’s target allocations for plan investments are 45 
percent to 55 percent for both equity securities and fixed income, including cash. Equity securities include collective investment 
and mutual funds and common stock. Fixed income securities include U.S. Treasury and other U.S. government agency securities, 
mortgage-backed securities, corporate bonds and notes, municipal bonds, collateralized mortgage obligations and money market 
funds.

Fair Value Measurements

The Corporation’s qualified defined benefit pension plan utilizes fair value measurements to record fair value adjustments 
and to determine fair value disclosures. The Corporation’s qualified benefit pension plan categorizes investments recorded at fair 
value into a three-level hierarchy, based on the markets in which the investment are traded and the reliability of the assumptions 
used to determine fair value. Refer to Note 1 for a description of the three-level hierarchy.

Following is a description of the valuation methodologies and key inputs used to measure the fair value of the Corporation’s 
qualified defined benefit pension plan investments, including an indication of the level of the fair value hierarchy in which the 
investments are classified.
Mutual funds 

Fair value measurement is based upon the net asset value (NAV) provided by the administrator of the fund. Mutual 

fund NAVs are quoted in an active market exchange, such as the New York Stock Exchange, and are included in Level 1 of the 
fair value hierarchy.

Common stock

Fair value measurement is based upon the closing price quoted in an active market exchange, such as the New York Stock 

Exchange. Level 1 common stock includes domestic and foreign stock and real estate investment trusts.

U.S. Treasury and other U.S. government agency securities

Level 1 securities include U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets. 
Fair value measurement is based upon quoted prices in an active market exchange, such as the New York Stock Exchange. Level 
2 securities include debt securities issued by U.S. government agencies and U.S. government-sponsored entities. The fair value 
of  Level  2  securities  is  determined  using  quoted  prices  of  securities  with  similar  characteristics,  or  pricing  models  based  on 
observable market data inputs, primarily interest rates and spreads.

Corporate and municipal bonds and notes

Fair value measurement is based upon quoted prices of securities with similar characteristics or pricing models based on 
observable market data inputs, primarily interest rates, spreads and prepayment information. Level 2 securities include corporate 
bonds, municipal bonds, foreign bonds and foreign notes.

Mortgage-backed securities

Fair value measurement is based upon independent pricing models or other model-based valuation techniques such as 
the present value of future cash flows, adjusted for the security's credit rating, prepayment assumptions and other factors, such as 
credit loss and liquidity assumptions, and are included in Level 2 of the fair value hierarchy.

Private placements

Fair value is measured using the NAV provided by fund management as quoted prices in active markets are not available. 
Management considers additional discounts to the provided NAV for market and credit risk. Private placements are included in 
Level 3 of the fair value hierarchy.

F-87

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

 Collective investment funds

Fair value measurement is based upon the NAV provided by the administrator of the fund as a practical expedient to 
estimate  fair  value.  There  are  no  unfunded  commitments  or  redemption  restrictions  on  the  collective  investment  funds.  The 
investments are redeemable daily.

 Fair Values

The  fair  values  of  the  Corporation’s  qualified  defined  benefit  pension  plan  investments  measured  at  fair  value  on  a 
recurring basis at December 31, 2018 and 2017, by asset category and level within the fair value hierarchy, are detailed in the table 
below.

(in millions)
December 31, 2018
Equity securities:
Mutual funds
Common stock

Fixed income securities:

U.S. Treasury and other U.S. government agency securities
Corporate and municipal bonds and notes
Mortgage-backed securities

Private placements
Total investments in the fair value hierarchy

Investments measured at net asset value:

Collective investment funds
Total investments at fair value

December 31, 2017
Equity securities:
     Mutual funds

Common stock

Fixed income securities:

U.S. Treasury and other U.S. government agency securities
Corporate and municipal bonds and notes
Mortgage-backed securities

Private placements
Total investments in the fair value hierarchy

Investments measured at net asset value:

   Collective investment funds
Total investments at fair value

Total

Level 1

Level 2

Level 3

$

$

$

$

$

3
803

$

3
803

482
—
—
—
1,288

$

496
679
29
60
2,070

392
2,462

$

$

1
961

$

1
961

451
—
—
—
1,413

$

456
765
25
80
2,288

455
2,743

$

— $
—

14
679
29
—
722

$

— $
—

5
765
25
—
795

$

—
—

—
—
—
60
60

—
—

—
—
—
80
80

The table below provides a summary of changes in the Corporation’s qualified defined benefit pension plan’s Level 3 

investments measured at fair value on a recurring basis for the years ended December 31, 2018 and 2017.

(in millions)
Year Ended December 31, 2018
Private placements
Year Ended December 31, 2017
Private placements

Balance at
Beginning
of Period

Net Gains (Losses)

Realized

Unrealized

Purchases

Sales

Balance at
End of Period

$

$

80

71

$

$

(1) $

(7) $

2

$

3

$

70

77

$

$

(82) $

(73) $

60

80

There were no assets in the non-qualified defined benefit pension plan at December 31, 2018 and 2017. The postretirement 
benefit plan is fully invested in bank-owned life insurance policies. The fair value of bank-owned life insurance policies is based 
on the cash surrender values of the policies as reported by the insurance companies and is classified in Level 2 of the fair value 
hierarchy.

F-88

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Cash Flows

The Corporation currently expects to make no employer contributions to the qualified and non-qualified defined benefit 

pension plans and postretirement benefit plan for the year ended December 31, 2019.

Estimated Future Benefit Payments

(in millions)
Years Ended December 31
2019
2020
2021
2022
2023
2024 - 2028
(a)  Estimated benefit payments in the postretirement benefit plan are net of estimated Medicare subsidies.

125
125
128
131
133
672

$

$

Qualified
Defined Benefit
Pension Plan

Non-Qualified
Defined Benefit
Pension Plan

Postretirement
Benefit Plan (a)
5
$
5
5
5
4
18

12
14
14
14
14
73

Defined Contribution Plans

Substantially  all  of  the  Corporation’s  employees  are  eligible  to  participate  in  the  Corporation’s  principal  defined 
contribution plan (a 401(k) plan). Under this plan, the Corporation makes core matching cash contributions of 100 percent of the 
first 4 percent of qualified earnings contributed by employees (up to the current IRS compensation limit), invested based on 
employee investment elections. Employee benefits expense included expense for the plan of $21 million for both of the years 
ended December 31, 2018 and 2017 and $22 million for the year ended December 31, 2016.

Through December 31, 2016, the Corporation also provided a retirement account plan for the benefit of substantially all 
employees who worked at least 1,000 hours in a plan year and were not accruing a benefit in the defined benefit pension plan. 
Under the retirement account plan, the Corporation made an annual discretionary allocation to the individual account of each 
eligible employee ranging from 3 percent to 8 percent of annual compensation, determined based on combined age and years of 
service. The allocations were invested based on employee investment elections. Employees participating in the retirement account 
plan as of December 31, 2016 were eligible to participate in the cash balance pension plan effective January 1, 2017. Final retirement 
account plan balances were transferred to the Corporation's 401(k) plan in the first quarter of 2017. Contributions to the retirement 
account plan ceased for periods beginning after December 31, 2016. The Corporation recognized $10 million of employee benefits 
expense for the year ended December 31, 2016.

Deferred Compensation Plans

The Corporation offers optional deferred compensation plans under which certain employees may make an irrevocable 
election to defer incentive compensation and/or a portion of base salary until retirement or separation from the Corporation. The 
employee may direct deferred compensation into one or more deemed investment options. Although not required to do so, the 
Corporation invests actual funds into the deemed investments as directed by employees, resulting in a deferred compensation asset, 
recorded in other short-term investments on the Consolidated Balance Sheets that offsets the liability to employees under the plan, 
recorded in accrued expenses and other liabilities. The earnings from the deferred compensation asset are recorded in interest on 
short-term investments and other noninterest income and the related change in the liability to employees under the plan is recorded 
in salaries and benefits expense on the Consolidated Statements of Income.

NOTE 18 - INCOME TAXES AND TAX-RELATED ITEMS

The provision for income taxes is calculated as the sum of income taxes due for the current year and deferred taxes. 
Income taxes due for the current year is computed by applying federal and state tax statutes to current year taxable income. Deferred 
taxes arise from temporary differences between the income tax basis and financial accounting basis of assets and liabilities. Tax-
related interest and penalties and foreign taxes are then added to the tax provision.

F-89

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The current and deferred components of the provision for income taxes were as follows:

(in millions)
December 31
Current:

Federal
Foreign
State and local
Total current

Deferred:
Federal
State and local
Remeasurement of deferred taxes

Total deferred
Total

2018

2017

2016

$

$

227
10
39
276

29
3
(8)
24
300

$

$

371
5
36
412

(26)
(2)
107
79
491

$

$

224
5
15
244

(49)
(2)
—
(51)
193

Income before income taxes of $1.5 billion for the year ended December 31, 2018 included $38 million of foreign-source 

income.

The provision for income taxes included a $107 million charge for the year ended December 31, 2017 to adjust deferred 
taxes as a result of the enactment of the Tax Cuts and Jobs Act and an $8 million downward revision to the impact recorded in 
2018. Refer to Note 1 for further details.

The provision for income taxes for 2018 and 2017 included a benefit of $23 million and $35 million, respectively, related 
to employee stock transactions as a result of new accounting guidance for stock compensation. For the year ended December 31, 
2016, tax effects of employee stock transactions of $4 million were recorded in shareholders' equity.

The provision for income taxes does not reflect the tax effects of unrealized gains and losses on investment securities 
available-for-sale or the change in defined benefit pension and other postretirement plans adjustment included in accumulated 
other comprehensive loss. Refer to Note 14 for additional information on accumulated other comprehensive loss.

A reconciliation of expected income tax expense at the federal statutory rate to the Corporation’s provision for income 

taxes and effective tax rate follows:

$

2016

2018

2017

Rate

Rate

Rate

Amount

Amount

Amount

(dollar amounts in millions)
Years Ended December 31
Tax based on federal statutory rate
State income taxes
Employee stock transactions
Capitalization and recovery positions (a)
Affordable housing and historic credits
Bank-owned life insurance
Remeasurement of deferred taxes
FDIC fees (b)
Other changes in unrecognized tax benefits
Tax-related interest and penalties
Lease termination transactions
Other
Provision for income taxes
(a) 
(b)  Beginning January 1, 2018, FDIC fees are no longer deductible as a result of the enactment of the Tax Cuts and Jobs Act.

35.0%
1.2
—
—
(3.3)
(2.3)
—
—
—
0.5
(2.2)
(0.1)
28.8%
 Tax benefits from the review of tax capitalization and recovery positions related to software and fixed assets included in the 2017 tax return.

21.0% $
2.3
(1.5)
(1.1)
(0.8)
(0.6)
(0.5)
0.5
0.3
(0.2)
—
0.1
19.5% $

35.0% $
1.8
(2.8)
—
(1.7)
(1.3)
8.7
—
—
0.3
(0.2)
—

235
8
—
—
(22)
(15)
—
—
—
3
(15)
(1)
193

432
22
(35)
—
(21)
(16)
107
—
—
4
(2)
—
491

323
35
(23)
(17)
(12)
(9)
(8)
8
4
(3)
—
2
300

39.8% $

$

The liability for tax-related interest and penalties included in accrued expenses and other liabilities on the Consolidated 

Balance Sheets was $7 million and $10 million at December 31, 2018 and 2017, respectively.

In the ordinary course of business, the Corporation enters into certain transactions that have tax consequences. From time 
to time, the Internal Revenue Service (IRS) may review and/or challenge specific interpretive tax positions taken by the Corporation 
with respect to those transactions. The Corporation believes that its tax returns were filed based upon applicable statutes, regulations 
and case law in effect at the time of the transactions. The IRS or other tax jurisdictions, an administrative authority or a court, if 
presented with the transactions, could disagree with the Corporation’s interpretation of the tax law.

F-90

 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

A reconciliation of the beginning and ending amount of net unrecognized tax benefits follows:

(in millions)
Balance at January 1

Increase as a result of tax positions taken during a prior period
Decrease related to settlements with tax authorities
Other

Balance at December 31

2018

2017

2016

$

$

10
9
(4)
(1)
14

$

$

15
4
(8)
(1)
10

$

$

22
—
(7)
—
15

The Corporation anticipates it is reasonably possible settlements with tax authorities will result in a $1 million decrease 

in net unrecognized tax benefits within the next twelve months.

 After consideration of the effect of the federal tax benefit available on unrecognized state tax benefits, the total amount 
of unrecognized tax benefits, if recognized, would affect the Corporation’s effective tax rate was approximately $11 million and 
$8 million at December 31, 2018 and 2017, respectively.

The following tax years for significant jurisdictions remain subject to examination as of December 31, 2018:

Jurisdiction
Federal
California

Tax Years
2014-2017
2006-2017

Based on current knowledge and probability assessment of various potential outcomes, the Corporation believes current 
tax reserves are adequate, and the amount of any potential incremental liability arising is not expected to have a material adverse 
effect on the Corporation’s consolidated financial condition or results of operations. Probabilities and outcomes are reviewed as 
events unfold, and adjustments to the reserves are made when necessary.

The principal components of deferred tax assets and liabilities were as follows:

(in millions)
December 31
Deferred tax assets:

Allowance for loan losses
Deferred compensation
Deferred loan origination fees and costs
Net unrealized losses on investment securities available-for-sale
Other temporary differences, net

Total deferred tax asset before valuation allowance

Valuation allowance

Total deferred tax assets

Deferred tax liabilities:

Lease financing transactions
Defined benefit plans
Allowance for depreciation

Total deferred tax liabilities
Net deferred tax asset

2018

2017

$

$

141
68
9
42
42
302
(3)
299

(74)
(41)
(18)
(133)
166

$

$

150
49
6
31
57
293
(3)
290

(76)
(72)
(1)
(149)
141

Deferred  tax  assets  included  state  net  operating  loss  carryforwards  of  $4  million  at  both  December 31,  2018  and 
December 31, 2017, which expire between 2018 and 2027. The Corporation believes it is more likely than not the benefit from 
certain of these state net operating loss carryforwards will not be realized and, accordingly, maintained a valuation allowance of 
$3 million at both December 31, 2018 and December 31, 2017. For further information on the Corporation’s valuation policy for 
deferred tax assets, refer to Note 1. 

F-91

 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 19 - TRANSACTIONS WITH RELATED PARTIES 

The Corporation’s banking subsidiaries had, and expect to have in the future, transactions with the Corporation’s directors 
and executive officers, companies with which these individuals are associated, and certain related individuals. Such transactions 
were made in the ordinary course of business and included extensions of credit, leases and professional services. With respect to 
extensions of credit, all were made on substantially the same terms, including interest rates and collateral, as those prevailing at 
the same time for comparable transactions with other customers and did not, in management’s opinion, involve more than normal 
risk of collectibility or present other unfavorable features. The aggregate amount of loans attributable to persons who were related 
parties at December 31, 2018, totaled $66 million at the beginning of 2018 and $109 million at the end of 2018. During 2018, new 
loans to related parties aggregated $716 million and repayments totaled $673 million.

NOTE 20 - REGULATORY CAPITAL AND RESERVE REQUIREMENTS

Reserves required to be maintained and/or deposited with the FRB are classified in interest-bearing deposits with banks. 
These reserve balances vary, depending on the level of customer deposits in the Corporation’s banking subsidiaries. The average 
required reserve balances were $599 million and $572 million for the years ended December 31, 2018 and 2017, respectively.

Banking regulations limit the transfer of assets in the form of dividends, loans or advances from the bank subsidiaries to 
the parent company. Under the most restrictive of these regulations, the aggregate amount of dividends which can be paid to the 
parent company, with prior approval from bank regulatory agencies, approximated $108 million at January 1, 2019, plus 2019 net 
profits. Substantially all the assets of the Corporation’s banking subsidiaries are restricted from transfer to the parent company of 
the Corporation in the form of loans or advances.

The Corporation’s subsidiary banks declared dividends of $1.1 billion, $907 million and $545 million in 2018, 2017 and 

2016, respectively.

The Corporation and its U.S. banking subsidiaries are subject to various regulatory capital requirements administered by 
federal and state banking agencies. The U.S. adoption of the Basel III regulatory capital framework (Basel III) became effective 
for the Corporation on January 1, 2015. Basel III sets forth two comprehensive methodologies for calculating risk-weighted assets 
(RWA), a standardized approach and an advanced approach. The Corporation and its U.S. banking subsidiaries are subject to the 
standardized approach under the rules. Under the standardized approach, RWA is generally based on supervisory risk-weightings 
which vary by counterparty type and asset class. Under the Basel III standardized approach, capital is required for credit risk RWA, 
to cover the risk of unexpected losses due to failure of a customer or counterparty to meet its financial obligations in accordance 
with contractual terms; and if trading assets and liabilities exceed certain thresholds, capital is also required for market risk RWA, 
to cover the risk of losses due to adverse market movements or from position-specific factors.

Under Basel III, there are three categories of risk-based capital: CET1 capital, Tier 1 capital and Tier 2 capital. CET1 
capital predominantly includes common shareholders' equity, less certain deductions for goodwill, intangible assets and deferred 
tax assets that arise from net operating losses and tax credit carry-forwards. Additionally, the Corporation has elected to permanently 
exclude capital in accumulated other comprehensive income related to debt and equity securities classified as available-for-sale 
as well as for defined benefit postretirement plans from CET1, an option available to standardized approach entities under Basel 
III. Tier 1 capital incrementally includes noncumulative perpetual preferred stock. Tier 2 capital includes Tier 1 capital as well as 
subordinated debt qualifying as Tier 2 and qualifying allowance for credit losses. Total capital is Tier 1 capital plus Tier 2 capital. 
In addition to the minimum risk-based capital requirements, the Corporation is required to maintain a minimum capital conservation 
buffer, in the form of common equity, in order to avoid restrictions on capital distributions and discretionary bonuses. The required 
amount of the capital conservation buffer is being phased in and ultimately increasing to 2.5% on January 1, 2019.

Quantitative measures established by regulation to ensure capital adequacy require the maintenance of minimum amounts 
and ratios of CET1, Tier 1 and total capital (as defined in the regulations) to average and/or risk-weighted assets. Failure to meet 
minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if 
undertaken, could have a direct material effect on the Corporation’s financial statements. At December 31, 2018 and 2017, the 
Corporation and its U.S. banking subsidiaries exceeded the ratios required for an institution to be considered “well capitalized” 
For U.S. banking subsidiaries, those requirements were total risk-based capital, Tier 1 risk-based capital, CET1 risk-based capital 
and leverage ratios greater than 10 percent, 8 percent, 6.5 percent and 5 percent, respectively, at December 31, 2018 and 2017. 
For the Corporation, requirements to be considered "well capitalized" were total risk-based capital and Tier 1 risk-based capital 
ratios greater than 10 percent and 6 percent, respectively, at December 31, 2018 and 2017. There have been no conditions or events 
since December 31, 2018 that management believes have changed the capital adequacy classification of the Corporation or its 
U.S. banking subsidiaries.

F-92

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following is a summary of the capital position of the Corporation and Comerica Bank, its principal banking subsidiary.

(dollar amounts in millions)
December 31, 2018

CET1 capital (minimum $3.0 billion (Consolidated))
Tier 1 capital (minimum $4.0 billion (Consolidated))
Total capital (minimum $5.4 billion (Consolidated))
Risk-weighted assets
Average assets (fourth quarter)
CET1 capital to risk-weighted assets (minimum-4.5%)
Tier 1 capital to risk-weighted assets (minimum-6.0%)
Total capital to risk-weighted assets (minimum-8.0%)
Tier 1 capital to average assets (minimum-4.0%)
Capital conservation buffer

December 31, 2017

CET1 capital (minimum $3.0 billion (Consolidated))
Tier 1 capital (minimum $4.0 billion (Consolidated))
Total capital (minimum $5.3 billion (Consolidated))
Risk-weighted assets
Average assets (fourth quarter)
CET1 capital to risk-weighted assets (minimum-4.5%)
Tier 1 capital to risk-weighted assets (minimum-6.0%)
Total capital to risk-weighted assets (minimum-8.0%)
Tier 1 capital to average assets (minimum-4.0%)
Capital conservation buffer

NOTE 21 - CONTINGENT LIABILITIES

Legal Proceedings

Comerica
Incorporated
(Consolidated)

Comerica
Bank

$

$

$

$

7,470
7,470
8,855
67,047
71,070
11.14%
11.14
13.21
10.51
5.14

7,773
7,773
9,211
66,575
71,372

11.68 %
11.68
13.84
10.89
5.68

7,229
7,229
8,433
66,857
70,905
10.81%
10.81
12.61
10.20
4.61

7,121
7,121
8,378
66,447
71,181

10.72 %
10.72
12.61
10.00
4.61

Comerica Bank, a wholly-owned subsidiary of the Corporation, was named in November 2011 as a third-party defendant 
in Butte Local Development v. Masters Group v. Comerica Bank (the case), for lender liability. The case was tried in January 2014, 
in the Montana Second District Judicial Court for Silver Bow County in Butte, Montana. On January 17, 2014, a jury awarded 
Masters $52 million against the Bank. On July 1, 2015, after an appeal filed by the Corporation, the Montana Supreme Court 
reversed the judgment against the Corporation and remanded the case for a new trial with instructions that Michigan contract law 
should apply and dismissing all other claims. The case was retried in the same district court, without a jury, in January 2017, and 
the Corporation awaits a ruling. Management believes that current reserves related to this case are adequate in the event of a 
negative outcome.

The Corporation and certain of its subsidiaries are subject to various other pending or threatened legal proceedings arising 
out of the normal course of business or operations. The Corporation believes it has meritorious defenses to the claims asserted 
against it in its other currently outstanding legal proceedings and, with respect to such legal proceedings, intends to continue to 
defend itself vigorously, litigating or settling cases according to management’s judgment as to what is in the best interests of the 
Corporation and its shareholders. Settlement may result from the Corporation's determination that it may be more prudent financially 
to settle, rather than litigate, and should not be regarded as an admission of liability. On at least a quarterly basis, the Corporation 
assesses its potential liabilities and contingencies in connection with outstanding legal proceedings utilizing the latest information 
available. On a case-by-case basis, reserves are established for those legal claims for which it is probable that a loss will be incurred 
either as a result of a settlement or judgment, and the amount of such loss can be reasonably estimated. The actual costs of resolving 
these claims may be substantially higher or lower than the amounts reserved. Based on current knowledge, and after consultation 
with legal counsel, management believes current reserves are adequate, and the amount of any incremental liability arising from 
these matters is not expected to have a material adverse effect on the Corporation’s consolidated financial condition, results of 
operations or cash flows. Legal fees of $17 million, $15 million and $19 million for the years ended December 31, 2018, 2017
and 2016, respectively, were included in other noninterest expenses on the Consolidated Statements of Income.

For matters where a loss is not probable, the Corporation has not established legal reserves. The Corporation believes the 
estimate of the aggregate range of reasonably possible losses, in excess of reserves established, for all legal proceedings in which 
it is involved is from zero to approximately $33 million at December 31, 2018. This estimated aggregate range of reasonably 

F-93

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

possible losses is based upon currently available information for those proceedings in which the Corporation is involved, taking 
into account the Corporation’s best estimate of such losses for those cases for which such estimate can be made. For certain cases, 
the Corporation does not believe that an estimate can currently be made. The Corporation’s estimate involves significant judgment, 
given the varying stages of the proceedings (including the fact many are currently in preliminary stages), the existence in certain 
proceedings of multiple defendants (including the Corporation) whose share of liability has yet to be determined, the numerous 
yet-unresolved issues in many of the proceedings (including issues regarding class certification and the scope of many of the 
claims) and the attendant uncertainty of the various potential outcomes of such proceedings. Accordingly, the Corporation’s estimate 
will change from time to time, and actual losses may be more or less than the current estimate.

In the event of unexpected future developments, it is possible that the ultimate resolution of these matters, if unfavorable, 

may be material to the Corporation's consolidated financial condition, results of operations or cash flows.

For information regarding income tax contingencies, refer to Note 18.

NOTE 22 - RESTRUCTURING CHARGES

The Corporation launched an initiative in 2016 designed to reduce overhead and increase revenue (the "GEAR Up" 
initiative). The  actions  in  the  initiative  include,  but  are  not  limited  to,  a  reduction  in  workforce,  a  new  retirement  program, 
streamlining operational processes, real estate optimization including consolidating banking centers as well as reducing office and 
operations space, selective outsourcing of technology functions, reduction of technology system applications, enhanced sales tools 
and training, expanded product offerings and improved customer analytics to drive opportunities. 

Certain actions associated with the GEAR Up initiative resulted in restructuring charges. Generally, costs associated with 
or incurred to generate revenue as part of the initiative were recorded according to the nature of the cost and were not included in 
restructuring charges. The Corporation considers the following costs associated with the initiative to be restructuring charges:

•  Employee costs: Primarily severance costs in accordance with the Corporation’s severance plan.

•  Facilities costs: Costs pertaining to consolidating banking centers and other facilities, such as lease termination costs 
and decommissioning costs. Also includes accelerated depreciation and impairment of owned property to be sold.

•  Technology costs: Impairment and other costs associated with optimizing technology infrastructure and reducing the 

number of applications.

•  Other costs: Includes primarily professional fees, as well as other contract termination fees and legal fees incurred in 

the execution of the initiative.

F-94

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Restructuring charges are recorded as a component of noninterest expenses on the Consolidated Statements of Income. 

The following table presents changes in restructuring reserves and cumulative charges incurred to date:

(in millions)

Year Ended December 31, 2018
Balance at beginning of period
Restructuring charges
Payments
Balance at end of period

Year Ended December 31, 2017
Balance at beginning of period
Restructuring charges
Payments
Adjustments for non-cash charges (a)
Balance at end of period

Year Ended December 31, 2016
Balance at beginning of period
Restructuring charges
Payments
Adjustments for non-cash charges (a)
Balance at end of period

Employee
Costs

Facilities
Costs

Technology
Costs

Other Costs

Total

$

$

$

$

$

$

8
10
(13)
5

10
10
(12)
—
8

$

$

$

$

— $
52
(44)
2
10

$

— $
4
(3)
1

$

$

4
2
(6)
—
— $

— $
15
(6)
(5)
4

$

6
37
(39)
4

$

$

— $
26
(15)
(5)
6

$

— $
—
—
—
— $

$

1
2
(3)
— $

4
7
(10)
—
1

$

$

— $
26
(22)
—
4

$

Total restructuring charges incurred (b)
(a)  Adjustments for non-cash charges primarily relate to impairments of previously capitalized software costs in Technology Costs.
(b)  Restructuring activities were completed as of 12/31/2018.

35

21

63

72

$

$

$

$

$

15
53
(58)
10

18
45
(43)
(5)
15

—
93
(72)
(3)
18

191

Restructuring charges directly attributable to a business segment are assigned to that business segment. For example, 
facilities costs pertaining to the consolidation of banking centers primarily impacted the Retail Bank. Restructuring charges incurred 
by areas whose services support the overall Corporation are allocated based on the methodology described in Note 23 to the 
consolidated financial statements. Total restructuring charges assigned to the Business Bank, Retail Bank and Wealth Management 
were $30 million, $16 million and $7 million, respectively, for the year ended December 31, 2018, $24 million, $15 million and 
$6 million, respectively, for the year ended December 31, 2017 and $43 million, $38 million and $12 million, respectively, for the 
year ended December 31, 2016.

NOTE 23 - BUSINESS SEGMENT INFORMATION

The Corporation has strategically aligned its operations into three major business segments: the Business Bank, the Retail 
Bank and Wealth Management. These business segments are differentiated based on the type of customer and the related products 
and services provided. In addition to the three major business segments, the Finance Division is also reported as a segment. Business 
segment results are produced by the Corporation’s internal management accounting system. This system measures financial results 
based on the internal business unit structure of the Corporation. The performance of the business segments is not comparable with 
the Corporation's consolidated results and is not necessarily comparable with similar information for any other financial institution. 
Additionally, because of the interrelationships of the various segments, the information presented is not indicative of how the 
segments would perform if they operated as independent entities. The management accounting system assigns balance sheet and 
income statement items to each business segment using certain methodologies, which are regularly reviewed and refined. From 
time to time, the Corporation may make reclassifications among the segments to more appropriately reflect management's current 
view of the segments, and methodologies may be modified as the management accounting system is enhanced and changes occur 
in the organizational structure and/or product lines. During the 2018, the Small Business component was reclassified from Retail 
Bank to Business Bank. For comparability purposes, amounts in all periods are based on business unit structure and methodologies 
in effect at December 31, 2018.

Net interest income for each segment reflects the interest income generated by earning assets less interest expense on 
interest-bearing liabilities plus the net impact from associated internal funds transfer pricing (FTP) funding credits and charges. The 
FTP methodology allocates credits to each business segment for deposits and other funds provided as well as charges for loans 
and other assets being funded. This credit or charge is based on matching stated or implied maturities for these assets and liabilities. 
The FTP crediting rates for deposits reflect the long-term value of deposits and other funding sources based on their implied 
maturity. FTP charge rates for funding assets reflect a matched cost of funds based on the pricing and duration characteristics of 

F-95

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

the assets. For acquired loans and deposits, matched maturity funding is determined based on origination date. Accordingly, the 
FTP process reflects the transfer of interest rate risk exposures to the Corporate Treasury department within the Finance segment, 
where such exposures are centrally managed. Effective January 1, 2016, in conjunction with the effective date for regulatory 
Liquidity Coverage Ratio (LCR) requirements, the Corporation prospectively implemented an additional FTP charge, primarily 
for the cost of maintaining liquid assets to support potential draws on unfunded loan commitments and for the long-term economic 
cost of holding collateral for secured deposits. The allowance for loan losses is allocated to the business segments based on the 
methodology used to estimate the consolidated allowance for loan losses described in Note 1. The related provision for loan losses 
is  assigned  based  on  the  amount  necessary  to  maintain  an  allowance  for  loan  losses  appropriate  for  each  business  segment. 
Noninterest income and expenses directly attributable to a line of business are assigned to that business segment. Direct expenses 
incurred  by  areas  whose  services  support  the  overall  Corporation  are  allocated  to  the  business  segments  as  follows:  product 
processing expenditures are allocated based on standard unit costs applied to actual volume measurements; administrative expenses 
are allocated based on estimated time expended; and corporate overhead is assigned 50 percent based on the ratio of the business 
segment’s noninterest expenses to total noninterest expenses incurred by all business segments and 50 percent based on the ratio 
of the business segment’s attributed equity to total attributed equity of all business segments. Equity is attributed based on credit, 
operational and interest rate risks. Most of the equity attributed relates to credit risk, which is determined based on the credit score 
and expected remaining life of each loan, letter of credit and unused commitment recorded in the business segments. Operational 
risk is allocated based on loans and letters of credit, deposit balances, non-earning assets, trust assets under management, certain 
noninterest income items, and the nature and extent of expenses incurred by business units. Virtually all interest rate risk is assigned 
to Finance, as are the Corporation’s hedging activities.

The following discussion provides information about the activities of each business segment. A discussion of the financial 
results and the factors impacting 2018 performance can be found in the section entitled "Business Segments" in the financial 
review.

The Business Bank meets the needs of small and middle market businesses, multinational corporations and governmental 
entities by offering various products and services, including commercial loans and lines of credit, deposits, cash management, 
capital market products, international trade finance, letters of credit, foreign exchange management services and loan syndication 
services.

The Retail Bank includes a full range of personal financial services, consisting of consumer lending, consumer deposit 
gathering and mortgage loan origination. This business segment offers a variety of consumer products, including deposit accounts, 
installment loans, credit cards, student loans, home equity lines of credit and residential mortgage loans.

Wealth Management offers products and services consisting of fiduciary services, private banking, retirement services, 
investment management and advisory services, investment banking and brokerage services. This business segment also offers the 
sale of annuity products, as well as life, disability and long-term care insurance products.

The Finance segment includes the Corporation’s securities portfolio and asset and liability management activities. This 
segment is responsible for managing the Corporation’s funding, liquidity and capital needs, performing interest sensitivity analysis 
and executing various strategies to manage the Corporation’s exposure to liquidity, interest rate risk and foreign exchange risk.

The Other category includes the income and expense impact of equity and cash, tax benefits not assigned to specific 
business segments, charges of an unusual or infrequent nature that are not reflective of the normal operations of the business 
segments and miscellaneous other expenses of a corporate nature.

F-96

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Business segment financial results are as follows:

(dollar amounts in millions)
Year Ended December 31, 2018
Earnings summary:
Net interest income (expense)
Provision for credit losses
Noninterest income
Noninterest expenses
Provision (benefit) for income taxes
Net income (loss)
Net credit-related charge-offs (recoveries)

Selected average balances:
Assets
Loans
Deposits

Statistical data:
Return on average assets (b)
Efficiency ratio (c)

(dollar amounts in millions)
Year Ended December 31, 2017
Earnings summary:
Net interest income (expense)
Provision for credit losses
Noninterest income
Noninterest expenses
Provision (benefit) for income taxes
Net income (loss)
Net credit-related (recoveries) charge-offs

Selected average balances:
Assets
Loans
Deposits

Statistical data:
Return on average assets (b)
Efficiency ratio (c)

(Table continues on following page)

Business
Bank

Retail
Bank

Wealth
Management

Finance

Other

Total

$ 1,613
6
547
847
283
$ 1,024
52
$

$43,207
41,618
30,116

$

$

548
(1)
136
602
18
$
$
65
$ — $

181
(3)
266
293
36
121
(1)

$

$
$

(46) $
—
27
(4)
(14)
(1) $
— $

56
(3)
—
56
(23) (a)
26
—

$ 2,352
(1)
976
1,794
300
$ 1,235
51
$

$ 2,633
2,067
20,812

$

5,214
5,081
3,941

$ 13,705
—
941

$

5,965
—
125

$ 70,724
48,766
55,935

2.37%
39.22

0.31%
87.47

2.32%
65.60

N/M
N/M

N/M
N/M

1.75%
53.56

Business
Bank

Retail
Bank

Wealth
Management

Finance

Other

Total

$ 1,513
69
639
918
410
755
96

$
$

$

$
$

453
2
154
615
(4)
(6)
1

$42,653
41,241
31,999

$ 2,626
2,061
20,775

$

$
$

$

169
1
255
285
51
87
(5)

$

$
$

(111) $
—
49
(4)
(35)
(23) $
— $

37
2
10
46
69 (a)
(70)
—

$ 2,061
74
1,107
1,860
491
743
92

$
$

5,401
5,256
4,081

$ 13,954
—
241

$

6,818
—
162

$71,452
48,558
57,258

1.77%

(0.03)%

42.67

100.72

1.61%

67.06

N/M
N/M

N/M
N/M

1.04%

58.64

F-97

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

(dollar amounts in millions)
Year Ended December 31, 2016
Earnings summary:
Net interest income (expense)
Provision for credit losses
Noninterest income
Noninterest expenses
Provision (benefit) for income taxes
Net income (loss)
Net credit-related charge-offs

Selected average balances:
Assets
Loans
Deposits

Business
Bank

Retail
Bank

Wealth
Management

Finance

Other

Total

$ 1,506
254
608
963
284
613
155

$
$

$

$
$

393
(2)
153
643
(34)
(61)
2

$ 43,373
41,954
32,930

$ 2,675
1,994
20,332

$

$
$

$

$

158
(4)
243
301
36
68
$
— $

(283) $
—
43
(4)
(90)
(146) $
— $

$

23
—
4
27
(3)
3
$
— $

1,797
248
1,051
1,930
193
477
157

5,232
5,048
4,126

$

$ 13,993
—
88

6,470
—
265

$ 71,743
48,996
57,741

Statistical data:
N/M
Return on average assets (b)
Efficiency ratio (c)
N/M
45.52
(a)  Primarily reflected discrete tax items, including a benefit of $48 million in 2018 and a net charge of $72 million in 2017.
(b)  Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.
(c)  Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding gains (losses) from securities and 

N/M
N/M

(0.29)%

116.63

0.67%

1.32%

1.41%

75.03

67.62

a derivative contract tied to the conversion rate of Visa Class B shares.

N/M – not meaningful

The Corporation operates in three primary markets - Texas, California, and Michigan, as well as in Arizona and Florida, 
with select businesses operating in several other states, and in Canada and Mexico. The Corporation produces market segment 
results for the Corporation’s three primary geographic markets as well as Other Markets. Other Markets includes Florida, Arizona, 
the International Finance division and businesses with a national perspective. The Finance & Other category includes the Finance 
segment and the Other category as previously described. Market segment results are provided as supplemental information to the 
business segment results and may not meet all operating segment criteria as set forth in GAAP. For comparability purposes, amounts 
in all periods are based on market segments and methodologies in effect at December 31, 2018. 

A discussion of the financial results and the factors impacting performance can be found in the section entitled "Market 

Segments" in the financial review.

Market segment financial results are as follows:

(dollar amounts in millions)
Year Ended December 31, 2018
Earnings summary:
Net interest income
Provision for credit losses
Noninterest income
Noninterest expenses
Provision (benefit) for income taxes
Net income 
Net credit-related charge-offs

Selected average balances:
Assets
Loans
Deposits

Statistical data:
Return on average assets (b)
Efficiency ratio (c)
(Table continues on following page)

Michigan

California

Texas

Other
Markets

Finance
& Other

Total

$

$
$

727
30
296
577
90
326
7

$

$
$

788
31
164
424
122
375
27

$

$
$

475
(53)
130
365
64
229
12

$

$
$

352
(6)
359
376
61
280
5

$

$
$

10
(3)
27
52
(37) (a)
25
—

$ 2,352
(1)
976
1,794
300
$ 1,235
51
$

$ 13,207
12,531
20,772

$ 18,532
18,283
16,964

$ 10,389
9,821
8,993

$ 8,925
8,131
8,141

$ 19,671
—
1,065

$ 70,724
48,766
55,935

1.52%
56.16

2.02%
44.58

2.20%
60.28

3.14%
52.95

N/M
N/M

1.75%
53.56

F-98

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

(dollar amounts in millions)
Year Ended December 31, 2017
Earnings summary:
Net interest income (expense)
Provision for credit losses
Noninterest income
Noninterest expenses
Provision for income taxes
Net income (loss)
Net credit-related (recoveries) charge-offs

Michigan

California

Texas

Other
Markets

Finance
& Other

Total

$

$
$

657
8
324
589
137
247
(1)

$

$
$

711
104
171
404
145
229
33

$

$
$

451
(72)
131
375
104
175
46

$

$
$

316
33
423
450
71
185
14

$

$
$

(74)
1
58
42
34 (a)
(93)
—

$ 2,061
74
1,107
1,860
491
743
92

$
$

Selected average balances:
Assets
Loans
Deposits

Statistical data:
Return on average assets (b)
Efficiency ratio (c)

(dollar amounts in millions)
Year Ended December 31, 2016
Earnings summary:
Net interest income (expense)
Provision for credit losses
Noninterest income
Noninterest expenses
Provision (benefit) for income taxes
Net income (loss)
Net credit-related charge-offs

Selected average balances:
Assets
Loans
Deposits

$ 13,395
12,677
21,823

$ 18,264
18,008
17,533

$ 10,443
9,969
9,625

$ 8,578
7,904
7,874

$ 20,772
—
403

$ 71,452
48,558
57,258

1.09%

59.84

1.24%

45.82

1.61%

64.30

2.14%

60.99

N/M
N/M

1.04%

58.64

Michigan

California

Texas

Other
Markets

Finance
& Other

Total

$

$
$

616
9
320
618
99
210
9

$

$
$

678
21
162
435
138
246
26

$

$
$

444
225
129
408
(21)
(39)
118

$ 13,105
12,457
21,777

$ 18,012
17,731
17,438

$ 11,101
10,637
10,168

$

$
$

$

$

$
$

$

319
(7)
393
446
70
203
4

9,062
8,171
8,005

(260) $
—
47
23
(93)
(143) $
— $

1,797
248
1,051
1,930
193
477
157

20,463
—
353

$ 71,743
48,996
57,741

Statistical data:
N/M
Return on average assets (b)
Efficiency ratio (c)
N/M
65.65
(a)  Primarily reflected discrete tax items, including a benefit of $48 million in 2018 and a net charge of $72 million in 2017.
(b)  Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.
(c)  Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding gains (losses) from securities and 

(0.32)%
70.93

0.67%

2.24%

1.33%

0.93%

51.84

67.62

62.67

a derivative contract tied to the conversion rate of Visa Class B shares. 

N/M – not meaningful

F-99

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 24 - PARENT COMPANY FINANCIAL STATEMENTS

BALANCE SHEETS - COMERICA INCORPORATED

(in millions, except share data)
December 31
Assets
Cash and due from subsidiary bank
Other short-term investments
Investment in subsidiaries, principally banks
Premises and equipment
Other assets

Total assets

Liabilities and Shareholders’ Equity
Medium- and long-term debt
Other liabilities

Total liabilities

Common stock - $5 par value:

Authorized - 325,000,000 shares
Issued - 228,164,824 shares

Capital surplus
Accumulated other comprehensive loss
Retained earnings
Less cost of common stock in treasury - 68,081,176 shares at 12/31/18 and 55,306,483

shares at 12/31/17

Total shareholders’ equity
Total liabilities and shareholders’ equity

STATEMENTS OF INCOME - COMERICA INCORPORATED

(in millions)
Years Ended December 31
Income
Income from subsidiaries:

Dividends from subsidiaries
Other interest income
Intercompany management fees

Other noninterest income
Total income

Expenses
Interest on medium- and long-term debt
Salaries and benefits expense
Net occupancy expense
Equipment expense
Restructuring charges
Other noninterest expenses
Total expenses

Income before benefit for income taxes and equity in undistributed

earnings of subsidiaries
Benefit for income taxes
Income before equity in undistributed earnings of subsidiaries
Equity in undistributed earnings of subsidiaries, principally banks
Net income

Less income allocated to participating securities

Net income attributable to common shares

F-100

2018

1,135
13
228
—
1,376

29
140
5
1
2
75
252

1,124
(5)
1,129
106
1,235
8
1,227

$

$

2018

2017

$

$

$

1,524
88
7,429
1
169
9,211

1,459
245
1,704

1,141
2,148
(609)
8,781

(3,954)
7,507
9,211

$

1,059
92
7,467
2
127
8,747

602
182
784

1,141
2,122
(451)
7,887

(2,736)
7,963
8,747

2017

2016

$

915
3
136
8
1,062

13
127
5
1
6
80
232

830
(26)
856
(113)
743
5
738

$

549
1
138
3
691

10
114
5
1
33
72
235

456
(28)
484
(7)
477
4
473

$

$

$

$

$

$

 
 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

STATEMENTS OF CASH FLOWS - COMERICA INCORPORATED

(in millions)
Years Ended December 31
Operating Activities
Net income
Adjustments to reconcile net income to net cash provided by operating

activities:

Undistributed earnings of subsidiaries, principally banks
Depreciation and amortization
Net periodic defined benefit cost (credit)
Share-based compensation expense
Benefit for deferred income taxes
Other, net

Net cash provided by operating activities

Financing Activities
Medium- and long-term debt:

Issuances
Common Stock:
Repurchases
Cash dividends paid
Issuances of common stock under employee stock plans

Net cash used in financing activities
Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Interest paid
Income taxes recovered

2018

2017

2016

$

1,235

$

743

$

477

(106)
1
4
21
(1)
10
1,164

113
1
(2)
16
(10)
59
920

850

—

(1,338)
(263)
52
(699)
465
1,059
1,524
$
11
$
(155) $

$
$
$

(560)
(180)
118
(622)
298
761
$
1,059
12
$
(331) $

7
1
1
14
(3)
6
503

—

(320)
(152)
157
(315)
188
573
761
9
(139)

NOTE 25 - SUMMARY OF QUARTERLY FINANCIAL STATEMENTS (UNAUDITED)

The following quarterly information is unaudited. However, in the opinion of management, the information reflects all 

adjustments, which are necessary for the fair presentation of the results of operations, for the periods presented.

(in millions, except per share data)
Interest income
Interest expense
Net interest income
Provision for credit losses
Net securities (losses) gains
Noninterest income excluding net securities losses
Noninterest expenses
Provision for income taxes
Net income
Less income allocated to participating securities
Net income attributable to common shares
Earnings per common share:

Basic
Diluted

Comprehensive income

2018

Fourth
Quarter

Third
Quarter

Second
Quarter

First
Quarter

$

$

$

704
90
614
16
—
250
448
90
310
2
308

1.91
1.88
312

$

$

$

675
76
599
—
(20)
254
452
63
318
2
316

1.89
1.86
296

$

$

$

650
60
590
(29)
—
248
448
93
326
2
324

1.90
1.87
290

590
41
549
12
1
243
446
54
281
2
279

1.62
1.59
178

$

$

$

F-101

 
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

(in millions, except per share data)
Interest income
Interest expense
Net interest income
Provision for credit losses
Noninterest income
Noninterest expenses
Provision for income taxes
Net income
Less income allocated to participating securities
Net income attributable to common shares
Earnings per common share:

Basic
Diluted

Comprehensive income

2017

Fourth
Quarter

Third
Quarter

Second
Quarter

First
Quarter

$

$

$

578
33
545
17
285
483
218
112
—
112

0.65
0.63
107

$

$

$

579
33
546
24
275
463
108
226
2
224

1.29
1.26
228

$

$

$

529
29
500
17
276
457
99
203
1
202

1.15
1.13
221

496
26
470
16
271
457
66
202
2
200

1.15
1.11
206

$

$

$

F-102

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 26 - REVENUE FROM CONTRACTS WITH CUSTOMERS

Revenue from contracts with customers comprises the noninterest income earned by the Corporation in exchange for 
services provided to customers. The following table presents the composition of revenue from contracts with customers, segregated 
from other sources of noninterest income, by business segment.

(in millions)
Year Ended December 31, 2018
Revenue from contracts with customers:

Card fees (a)
Service charges on deposit accounts (a)
Fiduciary income
Commercial loan servicing fees (b)
Brokerage fees
Other noninterest income (c)
Total revenue from contracts with customers

Other sources of noninterest income
Total noninterest income

Year Ended December 31, 2017

Card fees
Service charges on deposit accounts
Fiduciary income
Commercial lending fees
Letter of credit fees
Bank-owned life insurance
Foreign exchange income
Brokerage fees
Other noninterest income

Total noninterest income

Year Ended December 31, 2016

$

$

$

$

Business
Bank

Retail
Bank

Wealth
Management

Finance &
Other

Total

201
134
—
18
—
12
365
182
547

285
143
—
84
44
—
43
—
40
639

$

$

$

$

39
72
—
—
—
19
130
6
136

43
79
—
—
—
—
—
—
32
154

$

$

$

$

4
5
206
—
27
17
259
7
266

5
5
198
1
1
—
2
23
20
255

$

$

$

$

— $
—
—
—
—
1
1
26
27

$

— $
—
—
—
—
43
—
—
16
59

$

244
211
206
18
27
49
755
221
976

333
227
198
85
45
43
45
23
108
1,107

$

$

$

$

Card fees
Services charges on deposit accounts
Fiduciary income
Commercial lending fees
Letter of credit fees
Bank-owned life insurance
Foreign exchange income
Brokerage fees
Other noninterest income

257
136
—
90
49
—
39
—
37
Total noninterest income
608
(a)  Adoption of Topic 606 resulted in a change in presentation which records certain costs in the same category as the associated revenues. 
The effect of this change was to reduce card fees by $140 million and service charges on deposit accounts by $5 million for the twelve 
months ended December 31, 2018. Refer to Note 1 for further information.
(b)  Included in commercial lending fees on the Consolidated Statements of Income.
(c)  Excludes derivative, warrant and other miscellaneous income.

— $
—
—
(1)
—
42
—
—
6
47

303
219
190
89
50
42
42
19
97
1,051

4
4
190
—
1
—
2
19
23
243

42
79
—
—
—
—
1
—
31
153

$

$

$

$

$

Adjustments to revenue during the year ended December 31, 2018 for refunds or credits relating to prior periods were 

not significant.

Revenue from contracts with customers did not generate significant contract assets and liabilities.

F-103

 
 
REPORT OF MANAGEMENT

The management of Comerica Incorporated (the Corporation) is responsible for the accompanying consolidated financial 
statements and all other financial information in this Annual Report. The consolidated financial statements have been prepared in 
conformity with U.S. generally accepted accounting principles and include amounts which of necessity are based on management’s 
best estimates and judgments and give due consideration to materiality. The other financial information herein is consistent with 
that in the consolidated financial statements.

In  meeting  its  responsibility  for  the  reliability  of  the  consolidated  financial  statements,  management  develops  and 
maintains effective internal controls, including those over financial reporting, as defined in the Securities and Exchange Act of 
1934, as amended. The Corporation’s internal control over financial reporting includes policies and procedures that (1) pertain to 
the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets 
of  the  Corporation;  (2) provide  reasonable  assurance  that  transactions  are  recorded  as  necessary  to  permit  preparation  of  the 
consolidated  financial  statements  in  conformity  with  U.S.  generally  accepted  accounting  principles,  and  that  receipts  and 
expenditures of the Corporation are made only in accordance with authorizations of management and directors of the Corporation; 
and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of 
the Corporation’s assets that could have a material effect on the consolidated financial statements.

Management  assessed,  with  participation  of  the  Corporation’s  Chief  Executive  Officer  and  Chief  Financial  Officer, 
internal control over financial reporting as it relates to the Corporation’s consolidated financial statements presented in conformity 
with U.S. generally accepted accounting principles as of December 31, 2018. The assessment was based on criteria for effective 
internal  control  over  financial  reporting  described  in  Internal  Control—Integrated  Framework  issued  by  the  Committee  of 
Sponsoring  Organizations  of  the  Treadway  Commission  (2013  framework)  (the  COSO  criteria).  Based  on  this  assessment, 
management determined that internal control over financial reporting is effective as it relates to the Corporation’s consolidated 
financial statements presented in conformity with U.S. generally accepted accounting principles as of December 31, 2018.

Because of inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to risk that controls may become inadequate because 
of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

The Corporation's internal control over financial reporting as of December 31, 2018 has been audited by Ernst & Young 

LLP, an independent registered public accounting firm, as stated in their accompanying report. 

The Corporation’s Board of Directors oversees management’s internal control over financial reporting and financial 
reporting responsibilities through its Audit Committee as well as various other committees. The Audit Committee, which consists 
of  directors  who  are  not  officers  or  employees  of  the  Corporation,  meets  regularly  with  management,  internal  audit  and  the 
independent public accountants to assure that the Audit Committee, management, internal auditors and the independent public 
accountants are carrying out their responsibilities, and to review auditing, internal control and financial reporting matters.

Ralph W. Babb Jr.
Chairman and
Chief Executive Officer

Muneera S. Carr
Executive Vice President and
Chief Financial Officer

Mauricio A. Ortiz
Senior Vice President and
Chief Accounting Officer

F-104

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and the Board of Directors of Comerica Incorporated

Opinion on Internal Control over Financial Reporting
We have audited Comerica Incorporated and subsidiaries’ internal control over financial reporting as of December 31, 2018, based 
on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the 
Treadway  Commission  (2013  framework)  (the  COSO  criteria).  In  our  opinion,  Comerica  Incorporated  and  subsidiaries  (the 
Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2018, based 
on the COSO criteria. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(PCAOB), the consolidated balance sheets of the Company as of December 31, 2018 and 2017, and the related consolidated 
statements of income, comprehensive income, changes in shareholders' equity and cash flows for each of the three years in the 
period ended December 31, 2018, and the related notes of the Company and our report dated February 12, 2019 expressed an 
unqualified opinion thereon.

Basis for Opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment 
of  the  effectiveness  of  internal  control  over  financial  reporting  included  in  the  accompanying  Report  of  Management.  Our 
responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a 
public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance 
with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the 
PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the 
audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material 
respects. 

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness 
exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing 
such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for 
our opinion.

Definition and Limitations of Internal Control over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability 
of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted 
accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain 
to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets 
of the Company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial 
statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the Company are 
being made only in accordance with authorizations of management and directors of the Company; and (3) provide reasonable 
assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Company’s assets that 
could have a material effect on the financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because 
of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

Dallas, TX
February 12, 2019

F-105

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and the Board of Directors of Comerica Incorporated

Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of Comerica Incorporated and subsidiaries (the Company) as of 
December 31, 2018 and 2017, and the related consolidated statements of income, comprehensive income, changes in shareholders' 
equity and cash flows for each of the three years in the period ended December 31, 2018, and the related notes (collectively referred 
to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the consolidated 
financial position of the Company at December 31, 2018 and 2017, and the consolidated results of their operations and their cash 
flows for each of the three years in the period ended December 31, 2018, in conformity with U.S. generally accepted accounting 
principles. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(PCAOB), the Company’s internal control over financial reporting as of December 31, 2018, based on criteria established in 
Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 
framework) and our report dated February 12, 2019 expressed an unqualified opinion thereon. 

Basis for Opinion 
These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on 
the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are 
required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable 
rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the 
audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error 
or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether 
due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, 
evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting 
principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial 
statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 1992.
Dallas, TX 
February 12, 2019

F-106

HISTORICAL REVIEW - AVERAGE BALANCE SHEETS
Comerica Incorporated and Subsidiaries

CONSOLIDATED FINANCIAL INFORMATION

(in millions)
Years Ended December 31
ASSETS
Cash and due from banks

Interest-bearing deposits with banks
Other short-term investments

Investment securities

Commercial loans
Real estate construction loans
Commercial mortgage loans
Lease financing
International loans
Residential mortgage loans
Consumer loans
Total loans

Less allowance for loan losses

Net loans

Accrued income and other assets

Total assets

LIABILITIES AND SHAREHOLDERS’ EQUITY
Noninterest-bearing deposits

Money market and interest-bearing checking deposits
Savings deposits
Customer certificates of deposit
Foreign office time deposits

Total interest-bearing deposits

Total deposits
Short-term borrowings
Accrued expenses and other liabilities
Medium- and long-term debt

Total liabilities
Total shareholders’ equity

Total liabilities and shareholders’ equity

2018

2017

2016

2015

2014

$

1,135

$

1,209

$

1,146

$

1,059

$

4,700
134

5,443
92

5,099
102

6,158
106

11,810

12,207

12,348

10,237

934

5,513
109

9,350

30,534
3,155
9,131
470
1,021
1,983
2,472
48,766
(695)
48,071
4,874
$ 70,724

30,415
2,958
9,005
509
1,157
1,989
2,525
48,558
(728)
47,830
4,671
$ 71,452

31,062
2,508
8,981
684
1,367
1,894
2,500
48,996
(730)
48,266
4,782
$ 71,743

31,501
1,884
8,697
783
1,441
1,878
2,444
48,628
(621)
48,007
4,680
$ 70,247

29,715
1,909
8,706
834
1,376
1,778
2,270
46,588
(601)
45,987
4,443
$ 66,336

$ 29,241

$ 31,013

$ 29,751

$ 28,087

$ 25,019

22,378
2,199
2,092
25
26,694
55,935
62
1,076
5,842
62,915
7,809
$ 70,724

21,585
2,133
2,471
56
26,245
57,258
277
996
4,969
63,500
7,952
$ 71,452

22,744
2,013
3,200
33
27,990
57,741
138
1,273
4,917
64,069
7,674
$ 71,743

24,073
1,841
4,209
116
30,239
58,326
93
1,389
2,905
62,713
7,534
$ 70,247

22,891
1,744
4,869
261
29,765
54,784
200
1,016
2,963
58,963
7,373
$ 66,336

F-107

HISTORICAL REVIEW - STATEMENTS OF INCOME
Comerica Incorporated and Subsidiaries

CONSOLIDATED FINANCIAL INFORMATION

(in millions, except per share data)
Years Ended December 31
INTEREST INCOME
Interest and fees on loans
Interest on investment securities
Interest on short-term investments

Total interest income

INTEREST EXPENSE
Interest on deposits
Interest on short-term borrowings
Interest on medium- and long-term debt
Total interest expense
Net interest income

Provision for credit losses

Net interest income after provision for loan losses

NONINTEREST INCOME
Card fees
Service charges on deposit accounts
Fiduciary income
Commercial lending fees
Letter of credit fees
Bank-owned life insurance
Foreign exchange income
Brokerage fees
Net securities losses
Other noninterest income

Total noninterest income

NONINTEREST EXPENSES
Salaries and benefits expense
Outside processing fee expense
Net occupancy expense
Equipment expense
Restructuring charges
Software expense
FDIC insurance expense
Advertising expense
Litigation-related expenses
Gain on debt redemption
Other noninterest expenses

Total noninterest expenses

Income before income taxes
Provision for income taxes
NET INCOME
Less income allocated to participating securities
Net income attributable to common shares
Earnings per common share:

Basic
Diluted

Comprehensive income

Cash dividends declared on common stock
Cash dividends declared per common share

$

$

$

$

2018

2017

2016

2015

2014

$

$

$

$

2,262
265
92
2,619

122
1
144
267
2,352
(1)
2,353

244
211
206
85
40
39
47
27
(19)
96
976

1,009
255
152
48
53
125
42
30
—
—
80
1,794
1,535
300
1,235
8
1,227

7.31
7.20

1,076

309
1.84

$

$

$

$

1,872
250
60
2,182

42
3
76
121
2,061
74
1,987

333
227
198
85
45
43
45
23
—
108
1,107

961
366
154
45
45
126
51
28

—
84
1,860
1,234
491
743
5
738

4.23
4.14

762

193
1.09

$

$

$

$

1,635
247
27
1,909

40
—
72
112
1,797
248
1,549

303
219
190
89
50
42
42
19
—
97
1,051

989
336
157
53
93
119
54
21

—
108
1,930
670
193
477
4
473

2.74
2.68

523

154
0.89

$

$

$

$

1,551
216
17
1,784

43
—
52
95
1,689
147
1,542

276
223
187
99
53
40
40
17
(2)
102
1,035

1,000
318
159
53
—
99
37
24
(32)
—
169
1,827
750
229
521
6
515

2.93
2.84

504

148
0.83

1,525
211
14
1,750

45
—
50
95
1,655
27
1,628

81
215
180
98
57
39
40
17
1
129
857

972
111
171
57
—
95
33
23
4
(32)
181
1,615
870
277
593
7
586

3.28
3.16

572

143
0.79

F-108

HISTORICAL REVIEW - STATISTICAL DATA
Comerica Incorporated and Subsidiaries

CONSOLIDATED FINANCIAL INFORMATION

Years Ended December 31
Average Rates
Interest-bearing deposits with banks
Other short-term investments

Investment securities

Commercial loans
Real estate construction loans
Commercial mortgage loans
Lease financing
International loans
Residential mortgage loans
Consumer loans
Total loans
Interest income as a percentage of earning assets

Domestic deposits
Deposits in foreign offices

Total interest-bearing deposits

Short-term borrowings
Medium- and long-term debt

Interest expense as a percentage of interest-bearing sources

Interest rate spread
Impact of net noninterest-bearing sources of funds
Net interest margin as a percentage of earning assets

Ratios
Return on average common shareholders’ equity
Return on average assets
Efficiency ratio (a)
Common equity tier 1 capital as a percentage of risk weighted

assets (b)

Tier 1 capital as a percentage of risk-weighted assets (b)
Total capital as a percentage of risk-weighted assets
Common equity ratio
Tangible common equity as a percentage of tangible assets (c)

Per Common Share Data
Book value at year-end
Market value at year-end
Market value for the year

High
Low

2018

2017

2016

2015

2014

1.94%
0.96

1.09%
0.64

0.51%
0.61

0.26%
0.81

0.26%
0.54

2.19

4.64
5.21
4.69
3.82
4.97
3.77
4.41
4.64
3.99

0.45
1.19
0.46
1.90
2.42
0.82
3.17
0.41
3.58%

2.05

3.82
4.18
3.97
2.63
4.07
3.70
3.70
3.85
3.29

0.16
0.64
0.16
1.14
1.51
0.38
2.91
0.20
3.11%

2.02

3.25
3.63
3.49
2.64
3.63
3.76
3.32
3.34
2.88

0.14
0.35
0.14
0.45
1.45
0.34
2.54
0.17
2.71%

2.13

3.06
3.48
3.41
3.15
3.58
3.77
3.26
3.19
2.75

0.14
1.02
0.14
0.05
1.80
0.29
2.46
0.14
2.60%

2.25

3.11
3.41
3.75
2.30
3.65
3.82
3.20
3.27
2.85

0.14
0.82
0.15
0.03
1.68
0.29
2.56
0.13
2.69%

15.82%
1.75
53.56

9.34%
1.04
58.64

6.22%
0.67
67.62

6.91%
0.74
67.03

8.05%
0.89
64.26

11.14
11.14
13.21
10.60
9.78

11.68
11.68
13.84
11.13
10.32

11.09
11.09
13.27
10.68
9.89

10.54
10.54
12.69
10.52
9.70

n/a
10.50
12.51
10.70
9.85

$ 46.89
68.69

$ 46.07
86.81

$ 44.47
68.11

$ 43.03
41.83

$ 41.35
46.84

102.66
63.69

88.22
64.04

70.44
30.48

53.45
39.52

53.50
42.73

Other Data (share data in millions)
Average common shares outstanding - basic
Average common shares outstanding - diluted
Number of banking centers
Number of employees (full-time equivalent)
(a)  Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net securities gains (losses) from 

176
181
477
8,880

172
177
458
7,960

179
185
481
8,876

174
178
438
7,999

168
171
436
7,865

securities and a derivative contract tied to the conversion rate of Visa Class B shares.

(b)  Ratios calculated based on the risk-based capital requirements in effect at the time. The U.S. implementation of the Basel III regulatory 

capital framework became effective on January 1, 2015, with transitional provisions. 

(c)  See Supplemental Financial Data section for reconcilements of non-GAAP financial measures.
n/a - not applicable

F-109

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly 

caused this report to be signed on its behalf by the undersigned, thereunto duly authorized as of February 12, 2019.

SIGNATURES

COMERICA INCORPORATED

By:

/s/ Ralph W. Babb, Jr.
Ralph W. Babb, Jr.
Chairman and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following 

persons on behalf of the registrant in the capacities indicated as of February 12, 2019.

/s/ Ralph W. Babb, Jr.

Ralph W. Babb, Jr.

/s/ Muneera S. Carr

Muneera S. Carr

/s/ Mauricio A. Ortiz
Mauricio A. Ortiz

/s/ Michael E. Collins

Michael E. Collins

/s/ Roger A. Cregg

Roger A. Cregg

/s/ T. Kevin DeNicola

T. Kevin DeNicola

/s/ Curtis C. Farmer

Curtis C. Farmer

/s/ Jacqueline P. Kane

Jacqueline P. Kane

/s/ Richard G. Lindner

 Richard G. Lindner

/s/ Barbara R. Smith

Barbara R. Smith

/s/ Robert S. Taubman

Robert S. Taubman

/s/ Reginald M. Turner, Jr.

Reginald M. Turner, Jr.

/s/ Nina G. Vaca

Nina G. Vaca

/s/ Michael G. Van de Ven

Michael G. Van de Ven

Chairman and Chief Executive Officer and

Director (Principal Executive Officer)

Executive Vice President and Chief Financial Officer

(Principal Financial Officer)

Senior Vice President and Chief Accounting Officer
(Principal Accounting Officer)

Director

Director

Director

Director

Director

Director

Director

Director

Director

Director

Director

S-1

 
 
SHAREHOLDER INFORMATION

Common Stock: 
Comerica’s common stock trades under the symbol CMA on the New York Stock Exchange (NYSE). 
Subject to approval of the board of directors and applicable regulatory requirements, dividends 
customarily are paid on or about January 1, April 1, July 1 and October 1.

Transfer Agent/Registration and Shareholder Assistance: 

•

•
•
•

Inquiries related to shareholder name change, address or ownership of stock, and lost or stolen  

stock certificates

Eliminate duplicate mailings received at one address
Reinvest dividends and invest up to $10,000 each month for the purchase of additional shares
Direct deposit of dividends

CONTACT INFORMATION:
CONTACT INFORMATION:
Website: computershare.com/investor 
Website: computershare.com/investor 
Email: web.queries@computershare.com
Email: web.queries@computershare.com
Phone: 877.536.3551 or 781.575.3100
Phone: 877.536.3551 or 781.575.3100

WRITTEN REQUESTS:
WRITTEN REQUESTS:
Computershare
Computershare
P.O. Box 505000
P.O. Box 505000
Louisville, KY 40233-5000
Louisville, KY 40233-5000

CERTIFIED/OVERNIGHT MAIL:
Computershare
462 South 4th Street, Suite 1600
Louisville, KY 40202

CERTIFIED/OVERNIGHT MAIL:
Computershare
462 South 4th Street, Suite 1600
Louisville, KY 40202

Officer Certifications: 
On May 16, 2018, Comerica’s Chief Executive Officer submitted his annual certification to the New 
York Stock Exchange stating that he was not aware of any violation by Comerica of the Exchange’s 
corporate governance listing standards. Comerica filed the certifications by its Chief Executive Officer 
and Chief Financial Officer required by Section 302 of the Sarbanes-Oxley Act of 2002 as exhibits to its 
Annual Report on Form 10-K for the fiscal year ended December 31, 2018. 

Investor Relations Information:
investor.comerica.com
InvestorRelations@comerica.com
214.462.6831

General Information:
Directory Services   800.521.1190  
Product Information  800.292.1300 

COMERICA CORPORATE HEADQUARTERS
Comerica Bank Tower
1717 Main Street
Dallas, Texas 75201