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International Bancshares Corp.

iboc · NASDAQ Financial Services
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Ticker iboc
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Sector Financial Services
Industry Banks - Regional
Employees 501-1000
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FY2006 Annual Report · International Bancshares Corp.
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INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
(Consolidated) 

The following consolidated selected financial data is derived from the Corporation’s audited financial statements as of and for the 

five years ended December 31, 2006. The following consolidated financial data should be read in conjunction with Management’s 
Discussion and Analysis of Financial Condition and Results of Operations and the Consolidated Financial Statements and related 
notes in this report. 

Exhibit 13

SELECTED FINANCIAL DATA 

STATEMENT OF CONDITION 

Assets 
Net loans 
Deposits 
Other borrowed funds 
Junior subordinated deferrable interest 

Debentures (Note 1) 

Shareholders’ equity 
INCOME STATEMENT 

Interest income 
Interest expense 
Net interest income 
Provision for possible loan losses 
Non-interest income 
Non-interest expense 
Income before income taxes and cumulative 

change in accounting principle 

Minority interest in consolidated subsidiary    
Income taxes 

Cumulative effect of a change in accounting 

principle, net of taxes 

Net income 
Adjusted net income 

Per common share (Note 2): 

Basic 
Diluted 

$

$
$

$
$

2006

AS OF OR FOR THE YEARS ENDED DECEMBER 31, 
(Dollars in Thousands, Except Per Share Data) 

2003 

2005

2004

2002

10,911,454  
4,970,273  
6,989,918  
2,095,576

$ 10,391,853
4,547,896  
6,656,426  
1,870,075

 $ 9,921,505
4,807,623  
6,571,104  
1,670,199

210,908  
842,056  

609,073
319,588  
289,485  
3,849  
176,971  
288,677  

236,391  
792,867  

235,395  
753,090  

 $

  $

508,705
206,830  
301,875  
960  
167,222  
255,988  

 $

352,378
108,602  
243,776  
5,196  
134,816  
196,484  

173,930

212,149

176,912

—
71,370  

—
57,880  

  $ 6,497,638  
2,725,349  
4,239,899  
1,185,857

  $ 6,580,560 
2,700,354   
4,435,699   
845,276   
172,254   
577,383   

—  
547,264  

353,928  
116,415  
237,513  
8,253  
85,645  
155,131  

159,774

—
54,013  

  $

318,051 
94,725   
223,326   
8,044   
127,273   
160,001   
182,554   
—   
60,426   

40
56,889  

—  
117,001
117,001

1.85
1.83

$
$

 $
 $

—  
140,779
140,779

—  
$
119,032
$ 119,032

—   
122,128 
  $
  $ 122,128 

(5,130 )
100,631
  $
  $ 100,631

2.21
2.18

 $
 $

1.92
1.88

  $
  $

2.02 
1.98 

  $
  $

1.61  
1.58  

Note 1:   See note 1 of notes to the consolidated financial statements regarding the adoption of FIN 46, as revised. The Company early-adopted 

the provisions of FIN 46, as revised, as of December 31, 2003 and thus deconsolidated its investment in eight special purpose business trusts 
established for the issuance of trust preferred securities. 

Note 2:   Per share information has been re-stated giving retroactive effect to stock dividends distributed. 

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF 
FINANCIAL CONDITION AND RESULTS OF OPERATIONS 

Management’s discussion and analysis represents an explanation of significant changes in the financial position and results of 
operations of International Bancshares Corporation and subsidiaries (the “Company” or the “Corporation”) on a consolidated basis for 
the three-year period ended December 31, 2006. The following discussion should be read in conjunction with the Company’s Annual 
Report on Form 10-K for the year ended December 31, 2006, and the Selected Financial Data and Consolidated Financial Statements 
included elsewhere herein. 

Special Cautionary Notice Regarding Forward Looking Information 

Certain matters discussed in this report, excluding historical information, include forward-looking statements, within the meaning 

of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and 
are subject to the safe harbor created by these sections. Although the Company believes such forward-looking statements are based on 
reasonable assumptions, no assurance can be given that every objective will be reached. The words “estimate,” “expect,” “intend,” 
“believe” and “project,” as well as other words or expressions of a similar meaning are intended to identify forward-looking 
statements. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date of this 
report. Such statements are based on current expectations, are inherently uncertain, are subject to risks and should be viewed with 
caution. Actual results and experience may differ materially from the forward-looking statements as a result of many factors. 

Factors that could cause actual results to differ materially from any results that are projected, forecasted, estimated or budgeted 

by the Company in forward-looking statements include, among others, the following possibilities: 

•       Changes in interest rates and market prices, which could reduce the Company’s net interest margins, asset valuations and 

expense expectations. 

•       Changes in the capital markets utilized by the Company and its subsidiaries, including changes in the interest rate environment 

that may reduce margins. 

•       Changes in state and/or federal laws and regulations to which the Company and its subsidiaries, as well as their customers, 

competitors and potential competitors, are subject, including, without limitation, changes in the accounting, tax and regulatory 
treatment of trust preferred securities, as well as changes in banking, tax, securities, insurance and employment laws and 
regulations. 

•       Changes in U.S.—Mexico trade, including, without limitation, reductions in border crossings and commerce resulting from the 
Homeland Security Programs called “US-VISIT,” which is derived from Section 110 of the Illegal Immigration Reform and 
Immigrant Responsibility Act of 1996. 

•       The loss of senior management or operating personnel. 

•       Increased competition from both within and outside the banking industry. 

•       Changes in local, national and international economic business conditions that adversely affect the Company’s customers and 

their ability to transact profitable business with the Company, including the ability of its borrowers to repay their loans 
according to their terms or a change in the value of the related collateral. 

•       The timing, impact and other uncertainties of the Company’s potential future acquisitions including the Company’s ability to 

identify suitable potential future acquisition candidates, the success or  

2 

 
 
failure in the integration of their operations and the Company’s ability to maintain its current branch network and to enter new 
markets successfully and capitalize on growth opportunities. 

•       Changes in the Company’s ability to pay dividends on its Common Stock. 

•       The effects of the litigation and proceedings pending with the Internal Revenue Service regarding the Company’s lease 

financing transactions. 

•       Additions to the Company’s loan loss allowance as a result of changes in local, national or international conditions which 

adversely affect the Company’s customers. 

•       Political instability in the United States or Mexico. 

•       Technological changes. 

•       Acts of war or terrorism. 

•       The effect of changes in accounting policies and practices as may be adopted by the regulatory agencies, as well as the Public 
Company Accounting Oversight Board, the Financial Accounting Standards Board and other accounting standards setters. 

It is not possible to foresee or identify all such factors. The Company makes no commitment to update any forward-looking 
statement, or to disclose any facts, events or circumstances after the date hereof that may affect the accuracy of any forward-looking 
statement, unless required by law. 

Overview 

The Company, which is headquartered in Laredo, Texas, with more than 230 facilities and more than 360 ATMs, provides 
banking services for commercial, consumer and international customers of South, Central and Southeast Texas and the State of 
Oklahoma. The Company is one of the largest independent commercial bank holding companies headquartered in Texas. The 
Company, through its bank subsidiaries, is in the business of gathering funds from various sources and investing those funds in order 
to earn a return. The Company either directly or through a bank subsidiary owns two insurance agencies, a broker/dealer and a 
majority interest in an investment banking unit that owns a broker/dealer. The Company’s primary earnings come from the spread 
between the interest earned on interest-bearing assets and the interest paid on interest-bearing liabilities. In addition, the Company 
generates income from fees on products offered to commercial, consumer and international customers. 

A primary goal of the Company is to grow net interest income and non-interest income while adequately managing credit risk, 

interest rate risk and expenses. Effective management of capital is a critical objective of the Company. A key measure of the 
performance of a banking institution is the return on average common equity (“ROE”). The Company’s ROE for the year ended 
December 31, 2006 was 14.02% as compared to 17.97% for the year ended December 31, 2005. 

The Company is very active in facilitating trade along the United States border with Mexico. The Company does a large amount 
of business with customers domiciled in Mexico. Deposits from persons and entities domiciled in Mexico comprise a large and stable 
portion of the deposit base of the Company’s bank subsidiaries. The Company also serves the growing Hispanic population through 
the Company’s facilities located throughout South, Central and Southeast Texas and the State of Oklahoma. 

Expense control is an essential element in the Company’s long-term profitability. As a result, one of the key ratios the Company 

monitors is the efficiency ratio, which is a measure of non-interest expense to net-interest income plus non-interest income. The 
Company’s efficiency ratio has been under 55% for each of the last five years except 2006, which the Company’s review indicates is 
better than average compared to its national peer group. The Company’s efficiency ratio has increased over the last few years because 
of the Company’s aggressive branch expansion which has added 64 branches during 2006 and 2005. The efficiency  

3 

 
 
ratio during 2006 was negatively affected by the $8.9 million, net of tax, expense recognized in connection with the tax litigation. 
During rapid expansion periods, the Company’s efficiency ratio will suffer but the long term benefits of the expansion should be 
realized in future periods and benefits should positively impact the efficiency ratio in future periods. The Company believes that the 
de novo branching will help in attracting new low cost deposits and loans and also help with the retention of current customers as 
more out of market banks expand their branching activities in Texas; however, the Company realizes that there is a certain amount of 
time before each branch becomes profitable and thus negatively impacts earnings in the short term. The Company has continued to 
foster the growth of loans to improve net interest income; however, this process of expanding quality loan balances takes a certain 
amount of time and also increases the provision for loan losses in periods of expansion. The Company believes the de novo branch 
expansion is important to the future long term expansion of the Company. 

Results of Operations 
Summary 
Consolidated Statements of Condition Information 

Assets 
Net loans 
Deposits 
Other borrowed funds 
Junior subordinated deferrable interest debentures
Shareholders’ equity 

Consolidated Statements of Income Information 

  December 31, 2006

  10,911,454  
4,970,273  
6,989,918  
2,095,576  
210,908
842,056  

December 31, 2005 
(Dollars in Thousands) 
 $ 10,391,853      
4,547,896      
6,656,426      
1,870,075      
236,391      
792,867      

   Percent Increase
(Decrease)

5.0%  
9.3  
5.0  
  12.1  
(10.8)
6.2  

Interest income 
Interest expense 
Net interest income 
Provision for possible loan losses 
Non-interest income 
Non-interest expense 
Net income 
Per common share: 

Basic 
Diluted 

Year Ended
December 31,
2006

Year Ended
December 31,
2005

Percent
Increase 
(Decrease) 
2006 vs. 2005

(Dollars in Thousands)

  $ 609,073  
   319,588  
   289,485
3,849  
   176,971  
   288,677  
   117,001  

 $ 508,705  
  206,830  
301,875
960  
  167,222  
  255,988  
  140,779  

  19.7%  
  54.5  
(4.1)
  300.9  
5.8  
  12.8  
  (16.9)

  $

1.85  
1.83

 $

2.21  
2.18

  (16.3)%  
(16.1)

Year ended 
December 31, 
2004 
 $ 352,378      
  108,602      
243,776      
5,196      
  134,816      
  196,484      
  119,032      

 $ 

1.92      
1.88      

Percent
Increase 
(Decrease) 
2005 vs. 2004

  44.4%  
  90.4  
23.8
  (81.5)
  24.0  
  30.3  
  18.3  

  15.1%  
16.0

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Net Income 

Net income decreased for the year ended December 31, 2006 as compared to the year ended December 31, 2005 due in part, to a 
$8.9 million, net of tax, charge to operations as a result of the loss of a tax lawsuit with the Internal Revenue Service that was litigated 
during the third quarter of 2005 in the Federal District Court in San Antonio, Texas and that relates to certain leasing transactions 
previously discussed in Note 17 of the Notes to Consolidated Financial Statements.  Because of the trial court judgment issued on 
March 31, 2006, the uncertainty of the outcome at the appellate level and the similarity between the litigated lawsuit and the other tax 
case that is pending, the Company took the $8.9 million charge, net of tax.  Additionally, net income for the year ended December 31, 
2006 was negatively impacted due to the inverted yield curve, increasing competition for deposits, and strategic decisions to reduce 
certain loan and deposit categories acquired from Local Financial Corporation (“LFIN”).  As a result of the inverted yield curve, the 
Company’s interest revenue coming from its securities portfolio has been negatively affected.  Because the Company faces the 
challenges of an inverted yield, the Company has placed greater emphasis on growing its loan portfolio and potentially improving the 
volume of interest income derived from loans.  However, the greater emphasis on increasing loan balances comes with more risk and 
takes time to produce quality loans and does not guarantee the Company will achieve its goal. 

Net income increased for the year ended December 31, 2005 as compared to the year ended December 31, 2004 primarily 
because of the full integration of the Company’s acquisition of LFIN, improved results in its Texas operations, and the efficiencies 
created by the operations of the combined companies.  Net income was positively impacted by $5,613,000, net of tax, of distributions 
received in the first and second quarter of 2005 from the January 2005 merger of the PULSE EFT Association with Discover Financial 
Services, a business unit of Morgan Stanley.  Members of the PULSE EFT Association received these distributions based in part upon 
their volume of transactions through the PULSE network.  Net income for 2006, 2005 and 2004 has been negatively affected by the 
aggressive de novo branching activity by the Company.  The Company has added 32, 32, and 17 new branches in 2006, 2005 and 
2004, respectively.  The new branches do not include the 52 branches the Company acquired as a result of the LFIN acquisition.  The 
Company believes that the de novo branching will help in attracting new low cost deposits and loans and also help with the retention 
of current customers as more out of market banks expand their branching activities in Texas; however, the Company realizes that there 
is a certain amount of time before each branch becomes  profitable and thus de novo branching negatively impacts earnings in the 
short term.  As part of the LFIN acquisition, the Company decided to exit certain national lending strategies that LFIN employed.  As 
a result, the Company’s total loans have decreased from 2004 to 2005.  During the fourth quarter of 2003, the Company reduced its 
assets by approximately $1 billion in anticipation of the LFIN acquisition.  The Company also increased its overnight liquidity in the 
form of fed funds sold to prepare for the cash payment required as part of the transaction.  On June 18, 2004, the Company completed 
its acquisition of LFIN.  As a result of the strategic management of earning assets, net interest income for the first, second and third 
quarters of 2004 was negatively affected. 

5 

 
 
Net Interest Income 

Net interest income is the spread between income on interest-earning assets, such as loans and securities, and the interest expense 

on liabilities used to fund those assets, such as deposits, repurchase agreements and funds borrowed. Net interest income is the 
Company’s largest source of revenue. Net interest income is affected by both changes in the level of interest rates and changes in the 
amount and composition of interest earning assets and interest bearing liabilities. Net interest income has decreased over the period 
from 2005 to 2006 because of the inverted yield curve and the enormous competition for deposits. 

Interest earning assets: 

Loan, net of unearned discounts: 

Assets 

Domestic 
Foreign 

Investment securities: 

Taxable 
Tax-exempt 
Federal funds sold 
Other 

Total interest-earning assets 

Interest bearing liabilities: 

Liabilities 

Savings and interest bearing demand deposits
Time deposits: 
Domestic 
Foreign 

Securities sold under repurchase agreements
Other borrowings 
Junior subordinated deferrable interest debentures
Senior notes 

Total interest bearing liabilities 

For the years ended December 31,
2004
2005 
2006
Average 
Average 
Average
Rate/Cost    
Rate/Cost
Rate/Cost

  8.42%  
  7.16  

  4.58  
  4.88  
  4.79  
  6.82  
  6.51%  

  1.91%  

  3.81  
  3.77  
  4.50  
  5.07  
  9.72  
  —  
  3.84%  

  7.12 %   
  5.44   

  3.98   
  4.84   
  2.77   
  6.12   
  5.59 %   

  1.23 %   

  2.29   
  2.42   
  3.65   
  3.21   
  7.88   
   —   
  2.53 %   

  5.99%  
  4.91  

  3.64  
  4.54  
  1.22  
  4.81  
  4.87%  

.75%  

  1.44  
  1.85  
  3.64  
  1.55  
  6.38  
  11.47  
  1.69%  

For the three years ended December 31, 2006, as short term interest rates increased and stabilized, the Company accordingly 
increased interest rates on loans and deposits. The level of interest rates and the volume and mix of earning assets and interest-bearing 
liabilities impact net income and net interest margin. The yield on average interest-earning assets increased 16.5% from 5.59% in 2005 
to 6.51% in 2006, and the rates paid on average interest-bearing liabilities increased 51.8% from 2.53% in 2005 to 3.84% in 2006. The 
yield on average interest-earning assets increased 14.8% from 4.87% in 2004 to 5.59% in 2005, and the rates paid on average interest-
bearing liabilities increased 49.7% from 1.69% in 2004 to 2.53% in 2005. The majority of the Company’s taxable investment 
securities are invested in mortgage backed securities and during rapid increases or reduction in interest rates, the yield on these 
securities do not re-price as quickly as the loans. 

The Company has strategically reduced loans acquired in the LFIN acquisition.  LFIN had a national real estate group that loaned 
funds throughout the United States and after extensive review by the Company, the Company concluded the national real estate group 
goals were not consistent with the Company’s loan origination goals that emphasize risk, pricing and the desire to lend primarily in the 
markets that the Company occupies.  This strategic reduction negatively impacted the interest recognized on loans.  The decrease in 
interest income arising from this strategic reduction was offset by continued  

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growth in the Company’s Texas branches. The Company has continued to grow deposits through its internal sales program. The 
Company strategically reduced certain deposit categories of LFIN such as brokered deposits and certain public fund deposits. The 
Company decided not to continue the recruitment of brokered deposits and certain public funds because of the high expense associated 
with those types of funding sources and the lack of relationships those deposits carry. The strategic reduction in loans and deposits 
acquired with LFIN has negatively impacted net interest income. 

The following table analyzes the changes in net interest income during 2006 and 2005 and the relative effect of changes in 
interest rates and volumes for each major classification of interest-earning assets and interest-bearing liabilities. Non-accrual loans 
have been included in assets for the purpose of this analysis, which reduces the resulting yields: 

Interest earned on: 

Loans, net of unearned discounts: 

Domestic 
Foreign 

Investment securities: 

Taxable 
Tax-exempt 
Federal funds sold 
Other 
Total interest income 

2006 compared to 2005
Net increase (decrease) due to
  Rate(1)
(Dollars in Thousands)

Total

  Volume(1)

2005 compared to 2004
Net increase (decrease) due to

  Volume(1)     Rate(1)   

Total

(Dollars in Thousands)

 $ (4,700)   $ 58,593  $ 53,893  

1,723  

4,954  

6,677  

  13,920  

(322 )  
(1,586 )  
(187 )  
 $ 8,848  

40,299  

26,379  
37  
1,514  
43  

(285)  
(72)  
(144)  
  $ 91,520  $ 100,368  

1,556      

 $ 48,906       $ 51,539   $ 100,445  
1,370   
2,926  
  37,615       13,468   
301   
2,061   
142   

51,083  
(209)
2,091  
(9)
 $ 87,446       $ 68,881   $ 156,327  

(510 )   
30      
(151 )   

Interest incurred on: 

Savings and interest bearing demand 

deposits 
Time deposits: 
Domestic 
Foreign 

Securities sold under repurchase 

agreements 
Other borrowings 
Junior subordinated deferrable interest 

debentures 
Senior notes 
Total interest expense 

Net interest income 

 $

(729)   $ 14,237  $ 13,508  

 $ 2,624       $ 10,515   $ 13,139  

261  
2,842  

(2,958 )  
4,804  

26,233  
20,507  

5,711  
37,869  

26,494  
23,349  

2,753  
42,673  

1,731       14,494   
8,069   
4,281      
30   
7,489      
  12,488       31,455   

16,225  
12,350  

7,519  
43,943  

4,269  
—  

(288 )  
—  
  $ 108,826  $ 112,758  
 $ 3,932  
 $ 12,780   $ (17,306) $ (12,390)  $ 57,540 

5,435  
(383)
 $ 30,119       $ 68,109   $ 98,228  
559  $ 58,099

3,981  
—  

1,889      
(383 )   

3,546   
—   

     $ 

(Note 1)      The change in interest due to both rate and volume has been allocated to volume and rate changes in proportion to the 

relationship of the absolute dollar amounts of the change in each. 

As part of its strategy to manage interest rate risk, the Company strives to manage both assets and liabilities so that interest 

sensitivities match. One method of calculating interest rate sensitivity is through gap analysis. A gap is the difference between the 
amount of interest rate sensitive assets and interest rate sensitive liabilities that re-price or mature in a given time period. Positive gaps 
occur when interest rate sensitive assets exceed interest rate sensitive liabilities, and negative gaps occur when interest rate sensitive 
liabilities exceed interest rate sensitive assets. A positive gap position in a period of rising interest rates should have a positive effect 
on net interest income as assets will re-price faster than liabilities. Conversely, net interest income should contract somewhat in a 
period of falling interest rates. Management can quickly change the Company’s interest rate position at any given point in time as 
market conditions dictate. Additionally, interest rate changes do not affect all categories of assets and liabilities equally or at the same 

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time. Analytical techniques employed by the Company to supplement gap analysis include simulation analysis to quantify interest rate 
risk exposure. The gap analysis prepared by management is reviewed by the Investment Committee of the Company twice a year. The 
Investment Committee is comprised of certain senior managers of the various Company bank subsidiaries along with consultants. 
Management currently believes that the Company is properly positioned for interest rate changes; however, if management determines 
at any time that the Company is not properly positioned, it will strive to adjust the interest rate sensitive assets and liabilities in order 
to manage the effect of interest rate changes. 

At December 31, 2006, based on these simulations, a rate shift of 200 basis points in interest rates up or a rate shift of 200 basis 

points down will not vary net interest income by more than 2.7% of projected 2007 net interest income. The basis point shift in 
interest rates is a hypothetical rate scenario used to calibrate risk, and does not necessarily represent management’s current view of 
future market developments. The Company believes that it is properly positioned for a potential interest rate increase or decrease. 

Allowance for Possible Loan Loss 

The following table presents information concerning the aggregate amount of non-accrual, past due and restructured domestic 

loans; certain loans may be classified in one or more category: 

Loans accounted for on a non-accrual basis 
Loans contractually past due ninety days or more as to 

interest or principal payments 

Loans accounted for as “troubled debt restructuring”

2006

December 31, 
(Dollars in Thousands) 
  $ 13,490  $ 17,129  $ 16,998    $ 20,874  $ 3,649  

2004 

2003 

2005

2002

7,476  
—  

4,475  
—  

7,833   
—   

7,666  
213  

5,241  
165  

The allowance for possible loan losses decreased 17.0% to $64,537,000 at December 31, 2006 from $77,796,000 at 

December 31, 2005. The provision for possible loan losses charged to expense increased $2,889,000 to $3,849,000 for the year ended 
December 31, 2006 from $960,000 for the same period in 2005. The decrease in the allowance for possible loan losses can be 
attributed to the charge off of loans acquired as part of the LFIN acquisition. The increase in the provision for possible loan losses 
charged to expense can be attributed to the growth in the loan portfolio. The allowance for possible loan losses was 1.3% of total 
loans, net of unearned income at December 31, 2006 and 1.7% at December 31, 2005. 

The following table presents information concerning the aggregate amount of non-accrual and past due foreign loans extended to 

persons or entities in foreign countries. Certain loans may be classified in one or more category: 

Loans accounted for on a non-accrual basis 
Loans contractually past due ninety days or more as to interest or principal 

payments 

   $

4,298  $

228  

2006

2005

December 31, 
2004 

(Dollars in Thousands)
12,946    $ 
608   

104  

13,741  $

2003

2002  

85  $ 254  

597  

21  

The increase in non-accrual loans from 2003 to 2004 can be attributed to certain non-accrual loans acquired as a result of the 
LFIN acquisition. The gross income that would have been recorded during 2006 and 2005 on non-accrual and restructured loans in 
accordance with their original contract terms was $1,074,000 and $1,144,000 on domestic loans and $798,000 and $1,185,000 on 
foreign loans, respectively. The amount of interest income on such loans that was recognized in 2006 and 2005 was $289,000 and 
$252,000 on domestic loans and $18,000 and $46,000 for foreign loans, respectively. 

8 

  
  
 
  
 
 
  
 
 
 
  
 
 
  
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
The non-accrual loan policy of the bank subsidiaries is to discontinue the accrual of interest on loans when management 

determines that it is probable that future interest accruals will be uncollectible. Interest income on non-accrual loans is recognized only 
to the extent payments are received or when, in management’s opinion, the creditor’s financial condition warrants reestablishment of 
interest accruals. Under special circumstances, a loan may be more than 90 days delinquent as to interest or principal and not be 
placed on non-accrual status. This situation generally results when a bank subsidiary has a borrower who is experiencing financial 
difficulties, but not to the extent that requires a restructuring of indebtedness. The majority of this category is composed of loans that 
are considered to be adequately secured and/or for which there has been a recent history of payments. When a loan is placed on non-
accrual status, any interest accrued, not paid is reversed and charged to operations against interest income. 

Loan commitments, consisting of unused commitments to lend, letters of credit, credit card lines and other approved loans, that 

have not been funded, were $2,043,213,000 and $1,542,272,000 at December 31, 2006 and 2005, respectively. See Note 19 to the 
Consolidated Financial Statements. 

9 

 
 
The following table summarizes loan balances at the end of each year and average loans outstanding during the year; changes in 
the allowance for possible loan losses arising from loans charged-off and recoveries on loans previously charged-off by loan category; 
and additions to the allowance which have been charged to expense: 

Loans, net of unearned discounts, 
outstanding at December 31 

Average loans outstanding during the 

year (Note 1) 

Balance of allowance at January 1 
Provision charged to expense 
Loans charged off: 

Domestic: 

2006 

2005

2004

(Dollars in Thousands)

2003 

2002

  $  5,034,810

   $4,796,489
  $ 
77,796
3,849  

 $

$
 $

4,625,692

4,830,881
81,351
960  

 $

$
 $

4,888,974

3,982,580
46,396
5,196  

 $

$
 $

2,749,000 

2,756,003 
42,210 
8,044   

  $

  $
  $

2,769,562

2,664,856
38,350
8,253  

Commercial, financial and 

agricultural 

Real estate—mortgage 
Real estate—construction 
Consumer 
Foreign 

Total loans charged off: 
Recoveries credited to allowance: 

Domestic: 

Commercial, financial and 

agricultural 

Real estate—mortgage 
Real estate—construction 
Consumer 
Foreign 
Total recoveries 
Net loans charged off 
Allowance acquired (disposed) in 
purchase or sale transactions 

Balance of allowance at December 31 
Ratio of net loans charged-off during 

(7,302)
(554)
(99)
(2,056)
(8,377)
(18,388)

625
130  
53  
448  
24  
1,280  
(17,108)

(2,703)
(806)
(41)
(2,948)
(73)
(6,571)

1,436
69  
24  
511  
16  
2,056  
(4,515)

(5,732)
(1,179)
(295)
(2,034)
(273)
(9,513)

4,841
93  
17  
451  
5  
5,407  
(4,106)

(2,174 ) 
(489 ) 
—   
(2,173 ) 
(107 ) 
(4,943 ) 

313   
41   
—   
287   
444   
1,085   
(3,858 ) 

—  
64,537

$

—  
77,796

$

33,865  
81,351

$

  $ 

—   
46,396 

  $

the year to average loans 
outstanding during the year (Note 1)   

Ratio of allowance to loans, net of 

unearned discounts, outstanding at 
December 31 

.36%

.09%

.10%

1.28%

1.68%

1.66%

.14 % 

1.69 % 

(2,490)
(240)
—
(2,412)
(115)
(5,257)

495
247  
—  
553  
34  
1,329  
(3,928)

(465)
42,210

.15%

1.52%

(Note 1)      The average balances for purposes of the above table are calculated on the basis of month-end balances for the years ended 

2005, 2004, 2003 and 2002. 

The loan balances increased despite the decline of loans as a result of the Company’s strategy to reduce the exposure to certain 

loan categories that LFIN employed prior to the acquisition by the  

10 

 
 
  
  
 
 
 
  
 
  
  
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
    
 
 
  
 
 
 
 
 
 
    
 
 
  
  
  
  
  
  
  
 
 
 
 
 
 
    
 
 
  
    
  
  
  
  
  
  
  
  
 
 
 
 
  
Company. LFIN had a national real estate group that loaned funds throughout the United States and after extensive review by the 
Company, the Company concluded the national real estate group goals were not consistent with the Company’s loan origination goals 
that emphasize risk, pricing and the desire to lend primarily in the markets that the Company occupies. 

The allowance for possible loan losses has been allocated based on the amount management has deemed to be reasonably 

necessary to provide for the probable losses incurred within the following categories of loans at the dates indicated and the percentage 
of loans to total loans in each category: 

2006

2005

   Allowance     Percent 

of total     Allowance  

Percent 
of total

At December 31,

2004

Percent 
  Allowance
of total
(Dollars in Thousands)

2003

2002

  Allowance

Percent 
of total 

   Allowance   

Percent 
of total

Commercial, 

Financial and 
Agricultural 
Real estate— 
Mortgage 
Real estate— 

Construction 

Consumer 
Foreign 

      12,228  

     $ 28,158          46.5 %      $ 34,283  
      9,461          15.6   
      16,914          27.9   
      2,392          3.9   
      7,612          6.1   
       100.0 % 
     $ 64,537 

      13,007
      3,154  
      15,124  
     $ 77,796

  51.4%  

 $ 46,061  

  55.5%  

 $ 25,112  

  18.3  

  16,325  

  19.6  

8,887  

19.5
4.7  
6.1  
100.0%

12,741
3,897  
2,327  
$ 81,351

15.3
4.7  
4.9  
100.0%

8,828
2,511  
1,058  
$ 46,396

  50.9 %      $ 25,767   
      8,203  
  18.0   
      4,468 
17.9   
      2,593  
5.1   
      1,179  
8.1   
     $ 42,210 
100.0 % 

  57.5%  

  18.3  

10.0
5.8  
8.4  
100.0 %

The allowance for possible loan losses consists of the aggregate loan loss allowances of the bank subsidiaries. The allowances are 

established through charges to operations in the form of provisions for possible loan losses. Loan losses or recoveries are charged or 
credited directly to the allowances. The decrease in the allowance for possible loan losses can be attributed to the decrease in total 
loans, which is the result of the strategies employed after the consummation of the LFIN acquisition and the charging off of certain 
loans acquired as part of the LFIN acquisition. 

The bank subsidiaries charge off that portion of any loan which management considers to represent a loss as well as that portion 

of any other loan which is classified as a “loss” by bank examiners. Commercial, financial and agricultural or real estate loans are 
generally considered by management to represent a loss, in whole or part, (i) when an exposure beyond any collateral coverage is 
apparent, (ii) when no further collection of the portion of the loan so exposed is anticipated based on actual results, (iii) when the 
credit enhancements, if any, are not adequate, and (iv) when the borrower’s financial condition would indicate so. Generally, 
unsecured consumer loans are charged off when 90 days past due. 

While management of the Company considers that it is generally able to identify borrowers with financial problems reasonably 

early and to monitor credit extended to such borrowers carefully, there is no precise method of predicting loan losses. The 
determination that a loan is likely to be uncollectible and that it should be wholly or partially charged off as a loss is an exercise of 
judgment. Similarly, the determination of the adequacy of the allowance for possible loan losses can be made only on a subjective 
basis. It is the judgment of the Company’s management that the allowance for possible loan losses at December 31, 2006 was 
adequate to absorb probable losses from loans in the portfolio at that date. See Critical Accounting Policies on page 24. 

11 

  
 
 
  
  
 
  
  
  
 
 
  
 
  
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Non-Interest Income 

Service charges on deposit accounts  
Other service charges, commissions and 

fees 
Banking 
Non-banking 

Investment securities transactions, net 
Other investments, net 
Other income 

Total non-interest income 

Year Ended 
December 31, 
2006

Year Ended 
December 31, 
2005

Percent
Increase 
(Decrease) 
2006 vs. 2005    
(Dollars in Thousands) 

Year Ended 
December 31, 
2004 

Percent
Increase 
(Decrease)
2005 vs. 2004  

     $ 

84,770  

 $

83,917  

1.0%       $ 

73,877  

  13.6%  

29,523
21,605  
(930)  
20,035  
21,968
176,971

$

25,212
12,248  
(181)  
20,629  
25,397
167,222

17.1
  76.4  
  413.8  
(2.9)
(13.5)

5.8% 

     $

     $

19,320
7,083  
8,884  
13,012  
12,640
134,816

30.5
  72.9  
 (102.0)
  58.5  
100.9
24.0%

Non-interest income increased in 2006 as compared to 2005 primarily because of income recognized by the Company’s 
investment services unit. Non-interest income increased in 2005 as compared to 2004 primarily because of the full integration of the 
Company’s acquisition of LFIN. The increase in other income from 2005 to 2004 can be attributed primarily to a gain of $8,636,000 
from a distribution resulting from the January 2005 merger of the PULSE EFT Association with Discover Financial Services, a 
business unit of Morgan Stanley. Members of the PULSE EFT Association received these distributions based in part upon their 
volume of transactions through the PULSE network. 

Non-Interest Expense 

Employee compensation and 

benefits 
Occupancy 
Depreciation of bank premises and 

equipment 
Professional fees 
Stationery and supplies 
Amortization of identified 

intangible assets 

Advertising 
Other 

Total non-interest expense 

Year Ended 
December 31,
2006

Year Ended 
December 31,
2005

Percent
Increase 
(Decrease) 
2006 vs. 2005

(Dollars in Thousands)

Year Ended 
December 31, 
2004 

Percent
Increase 
(Decrease) 
2005 vs. 2004

  $ 124,359  
   27,886  

 $ 113,620  
25,053  

9.5%  

  11.3  

 $ 83,631      
18,403      

  35.9%  
  36.1  

   28,251  
   11,050  
6,490  

4,866  
   12,052  
   73,723
  $ 288,677

25,538  
12,497  
5,809  

5,176  
10,596  
57,699
$ 255,988

  10.6  
  (11.6)
  11.7  

(6.0)
  13.7  
27.8
12.8%

18,975      
6,513      
5,075      

3,681      
10,082      
50,124      
$ 196,484 

  34.6  
  91.9  
  14.5  

  40.6  
  5.1  
15.1
30.3%

Expense control is an essential element in the Company’s profitability. This is achieved through maintaining optimum staffing 
levels, an effective budgeting process, and internal consolidation of bank functions. The increase in other expense in 2006 compared 
to 2005 can be attributed to the $13,640,000 in connection with the tax lawsuits (see Note 17 to the consolidated financial statements) 
expensed in the first quarter 2006. The increase in employee compensation and benefits in 2006 compared to 2005 can be  

12 

  
  
 
 
  
  
 
 
 
  
  
 
 
 
 
 
     
 
 
 
 
 
 
 
 
 
 
     
 
 
 
 
 
 
 
     
     
     
 
 
 
     
 
 
     
 
     
 
 
     
 
 
 
 
     
 
 
     
     
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
  
 
  
  
 
  
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
  
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
  
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
    
 
 
attributed to increased fees paid by the Company’s investment banking unit, the GulfStar Group and the growth experienced with the 
de novo branch activity. The increase in non-interest expense for the three years ended 2006 can be attributed primarily to the 
expanded operations of the Company’s bank subsidiaries, which added 81 branches in the three year period ended December 31, 2006 
(excluding the acquisition of LFIN in June 2004, which added approximately 700 employees, 52 branches and $42,188,000 in 
identified intangible assets), the amount expensed in connection with the tax lawsuits and increased fees paid by the Company’s 
investment banking unit, the GulfStar Group, in 2006. 

Effects of Inflation 

The principal component of earnings is net interest income, which is affected by changes in the level of interest rates. Changes in 
rates of inflation affect interest rates. It is difficult to precisely measure the impact of inflation on net interest income because it is not 
possible to accurately differentiate between increases in net interest income resulting from inflation and increases resulting from 
increased business activity. Inflation also raises costs of operations, primarily those of employment and services. 

Financial Condition 
Investment Securities 

The following table sets forth the carrying value of investment securities as of December 31, 2006, 2005 and 2004: 

U.S. Treasury and Government Securities 

Available for sale 

Mortgage-backed securities 

Available for sale 

Obligations of states and political subdivisions 

Available for sale 

Equity securities 

Available for sale 

Other securities 

Held to maturity 
Available for sale 

Total 

2006

December 31, 
2005 
(Dollars in Thousands)

2004

$

$

1,268 $ 

1,283 $

9,276

4,376,284

4,148,859

3,743,225

95,897  

14,629  

2,375  
2,079  
4,492,532 $ 

99,557  

14,654  

2,375  
2,599  

4,269,327 $

104,317  

13,235  

2,385  
4,780  
3,877,218

The following tables set forth the contractual maturities of investment securities, based on amortized cost, at December 31, 2006 
and the average yields of such securities, except for the totals, which reflect the weighted average yields. Actual maturities will differ 
from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties. 

13 

  
 
  
 
 
  
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for Sale
Maturing

   Within one year
Adjusted
   Cost

  Yield

After one but
within five years
Adjusted

Cost

  Yield

After five but 
within ten years 
Adjusted 

Cost

  Yield 

   After ten years

Adjusted

Cost

  Yield  

(Dollars in Thousands)

   $ 1,268
516

5.09% $
7.53

—
136,437

—% $

4.76

—
68,267

—  
325  
—  
   $ 2,109

  —  
  —  
  —  
  4.89%  

750  
—  
—  
$ 137,187

  4.45  
  —  
  —  
  4.75%  

85,169  
—  
—  
$ 153,436

—%

4.79

  %    $

—
4,235,045

5.34   
  4.78   
  —   
  —   
  5.03 %    $ 4,260,134

4.91  
6,959  
13,500  
4.41  
4,630   13.00  

  4.80%

U.S. Treasury and obligations of U.S. 

Government agencies 
Mortgage-backed securities 
Obligations of states and political 

subdivisions 
Equity securities 
Other securities 

Total 

Other securities 
Total 

   Within one year
Adjusted
   Cost

Yield

  $ 75  
  $ 75

  5.72%  
  5.72%  

Held to Maturity
Maturing

After one but
within five years
Adjusted

Cost

  Cost

Yield
(Dollars in Thousands)
  5.14%  
  5.14%  

 $ —      
$ — 

$ 2,300
$ 2,300

After five but 
within ten years 
Adjusted 

   After ten years
Adjusted

   Yield     Cost

  Yield  

  —      
  —      

  $ —  
  $ —

  —  
  —  

Mortgage-backed securities are securities primarily issued by the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 

Federal National Mortgage Association (“Fannie Mae”), and the Government National Mortgage Association (“Ginnie Mae”). 

Loans 

The amounts of loans outstanding, by classification, at December 31, 2006, 2005, 2004, 2003 and 2002 are shown in the 

following table: 

Commercial, financial and agricultural     $ 2,337,573
Real estate-mortgage 
785,401  
Real estate—construction 
1,404,186  
Consumer 
198,580  
Foreign 
309,144  
5,034,884
(74)
   $ 5,034,810

Total loans 
Unearned discount 

Loans, net of unearned discount 

2006

2005

December 31,
2004
(Dollars in Thousands)
 $ 2,710,270
960,599  
749,689  
229,302  
239,622  
4,889,482
(508)
$ 4,888,974

 $ 2,376,276
847,512  
901,518  
218,607  
281,947  
4,625,860
(168)
$ 4,625,692

2003 

2002

 $ 1,400,173 
495,481   
492,208   
139,987   
222,797   
2,750,646   
(1,646 ) 
$ 2,749,000 

  $ 1,595,140  
507,837  
276,595  
160,546  
233,276  
2,773,394
(3,832)
  $ 2,769,562

14 

  
  
  
 
 
  
  
 
  
  
 
  
 
 
 
  
  
 
 
  
 
  
 
 
  
  
  
 
  
  
  
 
 
  
  
 
 
  
  
 
 
  
 
 
 
  
  
 
  
  
 
  
 
 
 
  
  
 
 
  
 
  
 
 
 
  
  
 
  
 
 
 
 
  
 
 
 
 
    
 
 
 
  
  
 
  
  
 
 
 
  
 
  
  
 
  
  
  
  
  
  
 
 
 
 
The following table shows the amounts of loans (excluding real estate mortgages and consumer loans) outstanding as of 
December 31, 2006, which based on remaining scheduled repayments of principal are due in the years indicated. Also, the amounts 
due after one year are classified according to the sensitivity to changes in interest rates: 

Maturing 

Commercial, financial and agricultural 
Real estate—construction 
Foreign 
Total 

Within
one year

$ 713,711
779,399  
190,915  
$ 1,684,025

Due after one but within five years
Due after five years 

Total 

Total

  $ 2,337,573
1,404,186  
309,144  
  $ 4,050,903

$ 1,401,687
583,278  
115,967  
$ 2,100,932

After one
After 
but within 
five years 
five years
(Dollars in Thousands) 
  $ 222,175 
41,509   
2,262   
  $ 265,946 
Interest sensitivity 
(Dollars in Thousands) 

  Fixed Rate

   Variable Rate   
     $ 1,802,188 
223,815   
     $ 2,026,003 

$ 298,744
42,131
$ 340,875

Total loan balances as of December 31, 2006 as compared to December 31, 2005 have increased because of the Company’s 

desire to grow loans organically. This increase occurred despite the Company’s strategy to reduce the exposure to certain loan 
categories that LFIN employed prior to the acquisition by the Company. LFIN had a national real estate group that loaned funds 
throughout the United States and after extensive review by the Company, the Company concluded the national real estate group goals 
were not consistent with the Company’s loan origination goals that emphasize risk, pricing and the desire to lend primarily in the 
markets that the Company occupies. 

International Operations 

On December 31, 2006, the Company had $309,144,000 (2.8% of total assets) in loans outstanding to borrowers domiciled in 
foreign countries. The loan policies of the Company’s bank subsidiaries generally require that loans to borrowers domiciled in foreign 
countries be primarily secured by assets located in the United States or have credit enhancements, in the form of guarantees, from 
significant United States corporations. The composition of such loans and the related amounts of allocated allowance for possible loan 
losses as of December 31, 2006 is presented below. 

Secured by certificates of deposits in United States banks
Secured by United States real estate 
Secured by other United States collateral (securities, gold, silver, etc.)
Foreign real estate guaranteed under lease obligations primarily by U.S. companies
Direct unsecured Mexican sovereign debt (principally former FICORCA debt)
Other (principally Mexico real estate) 

15 

Amount  
of Loans 

Related
Allowance for
Possible Losses  

  $

$ 177,435 
40,518   
21,378   
689   
2,249   
66,875   
$ 309,144 

(Dollars in Thousands)
89
421
   2,453  
121
22  
   4,506  
  $ 7,612

  
  
  
 
 
  
 
 
  
 
 
 
  
 
  
 
 
 
 
 
 
 
  
 
 
  
  
 
 
  
 
 
 
  
 
  
  
 
 
 
  
 
 
  
 
 
  
 
  
 
 
 
  
 
  
 
 
The transactions for the year ended December 31, 2006, in that portion of the allowance for possible loan losses related to foreign 

debt were as follows: 

Balance at December 31, 2005 

Charge-offs 
Recoveries 
Net charge-offs 
Provision charged to expense 
Balance at December 31, 2006 

Deposits 

Deposits: 

Demand—non-interest bearing

Domestic 
Foreign 

Total demand non-interest bearing
Savings and interest bearing demand

Domestic 
Foreign 

Total savings and interest bearing demand
Time certificates of deposit 

$100,000 or more: 

Less than $100,000: 

Domestic 
Foreign 

Domestic 
Foreign 

Total time, certificates of deposit
Total deposits 

16 

(Dollars in Thousands)   
  $ 15,138 
   (8,537 ) 
84   
   (8,453 ) 
927   
  $  7,612 

2006
  Average Balance
(Dollars in Thousands) 

2005 
  Average Balance  

 $ 1,240,419  
124,192
  1,364,611  

  1,810,759  
311,543
  2,122,302  

823,145
  1,147,864  

897,597  
380,094  
  3,248,700  
$ 6,735,613

  $ 1,139,614   
114,080   
   1,253,694     

   1,848,257     
333,046   
   2,181,303     

810,358   
   1,050,166     

898,917     
360,299     
   3,119,740     
  $ 6,554,737 

  
  
 
 
 
 
 
    
  
 
  
  
 
  
 
  
  
 
    
  
 
 
 
  
  
 
 
 
 
 
 
 
  
      
 
 
 
 
 
  
      
 
 
 
  
 
 
 
 
 
 
 
  
      
 
 
  
 
 
 
 
 
 
 
  
      
 
 
 
 
 
  
      
  
 
 
  
    
 
 
 
  
 
 
 
  
 
 
 
 
 
 
 
 
Interest expense: 

Savings and interest bearing demand

Domestic 
Foreign 

Total savings and interest bearing demand
Time, certificates of deposit 

$100,000 or more 

Less than $100,000 

Domestic 
Foreign 

Domestic 
Foreign 

Total time, certificates of deposit

Total interest expense on deposits

2006

2005 
(Dollars in Thousands) 

2004 

$ 36,606
3,838
40,444

$ 24,583 
2,353   
26,936   

  $ 11,991
1,806
13,797

32,851  
44,143  

18,705   
26,710   

10,483  
17,327  

33,225  
12,858  
123,077  
$ 163,521

20,399   
7,420   
73,234   
$ 100,170 

12,396  
4,453  
44,659  
  $ 58,456

The Company offers a variety of deposit accounts having a wide range of interest rates and terms. The Company relies primarily 

on its high quality customer service, sales programs, customer referrals and advertising to attract and retain these deposits. Deposits 
provide the primary source of funding for the Company’s lending and investment activities, and the interest paid for deposits must be 
managed carefully to control the level of interest expense. Deposits at December 31, 2006 were $6,989,918,000, an increase of 5.0% 
from $6,656,426,000 at December 31, 2005. The increase in deposits from 2005 to 2006 is primarily the result of the Company’s 
internal sales programs to organically grow deposits, despite the Company strategically reducing certain deposit categories of LFIN 
such as brokered deposits and certain public funds. The Company decided not to continue the recruitment of brokered deposits and 
certain public funds because of the high expense associated with those types of funding sources and the lack of relationships those 
deposits carry. 

Return on Equity and Assets 

Certain key ratios for the Company for the years ended December 31, 2006, 2005 and 2004 follows (Note 1): 

Percentage of net income to: 

Average shareholders’ equity 
Average total assets 

Percentage of average shareholders’ equity to average total 

assets 

Percentage of cash dividends per share to net income per 

share 

Years ended December 31, 
2005 
2006

2004 

14.02% 17.97 %  18.17 %
1.46   
1.37   
1.10

7.82

37.64  

7.62   

8.04   

32.58   

38.42   

(Note 1) The average balances for purposes of the above table are calculated on the basis of month-end balances for 2005 and 2004. 

17 

  
  
  
 
  
 
 
  
 
  
 
 
    
 
 
 
    
 
 
 
 
 
    
 
 
    
 
 
 
 
 
    
 
 
 
 
 
 
 
 
  
 
  
  
 
 
  
  
 
 
 
    
    
 
 
Liquidity and Capital Resources 
Liquidity 

The maintenance of adequate liquidity provides the Company’s bank subsidiaries with the ability to meet potential depositor 

withdrawals, provide for customer credit needs, maintain adequate statutory reserve levels and take full advantage of high-yield 
investment opportunities as they arise. Liquidity is afforded by access to financial markets and by holding appropriate amounts of 
liquid assets. The Company’s bank subsidiaries derive their liquidity largely from deposits of individuals and business entities. 
Deposits from persons and entities domiciled in Mexico comprise a stable portion of the deposit base of the Company’s bank 
subsidiaries. Historically, the Mexico based deposits of the Company’s bank subsidiaries have been a stable source of funding. Such 
deposits comprised approximately 30%, 28% and 28% of the Company’s bank subsidiaries’ total deposits as of December 31, 2006, 
2005 and 2004, respectively. Other important funding sources for the Company’s bank subsidiaries have been borrowings from the 
Federal Home Loan Bank (“FHLB”), securities sold under repurchase agreements and large certificates of deposit, requiring 
management to closely monitor its asset/liability mix in terms of both rate sensitivity and maturity distribution. Primary liquidity of 
the Company and its subsidiaries has been maintained by means of increased investment in shorter-term securities, certificates of 
deposit and repurchase agreements. As in the past, the Company will continue to monitor the volatility and cost of funds in an attempt 
to match maturities of rate-sensitive assets and liabilities, and respond accordingly to anticipated fluctuations in interest rates over 
reasonable periods of time. 

Asset/Liability Management 

The Company’s fund management policy has as its primary focus the measurement and management of the banks’ earnings at 
risk in the face of rising or falling interest rate forecasts. The earliest and most simplistic concept of earnings at risk measurement is 
the gap report, which is used to generate a rough estimate of the vulnerability of net interest income to changes in market rates as 
implied by the relative re-pricings of assets and liabilities. The gap report calculates the difference between the amounts of assets and 
liabilities re-pricing across a series of intervals in time, with emphasis typically placed on the one-year period. This difference, or gap, 
is usually expressed as a percentage of total assets. 

If an excess of liabilities over assets matures or re-prices within the one-year period, the statement of condition is said to be 
negatively gapped. This condition is sometimes interpreted to suggest that an institution is liability-sensitive, indicating that earnings 
would suffer from rising rates and benefit from falling rates. If a surplus of assets over liabilities occurs in the one-year time frame, the 
statement of condition is said to be positively gapped, suggesting a condition of asset sensitivity in which earnings would benefit from 
rising rates and suffer from falling rates. 

The gap report thus consists of an inventory of dollar amounts of assets and liabilities that have the potential to mature or re-price 
within a particular period. The flaw in drawing conclusions about interest rate risk from the gap report is that it takes no account of the 
probability that potential maturities or re-pricings of interest-rate-sensitive accounts will occur, or at what relative magnitudes. 
Because simplicity, rather than utility, is the only virtue of gap analysis, financial institutions increasingly have either abandoned gap 
analysis or accorded it a distinctly secondary role in managing their interest-rate risk exposure. 

The net interest rate sensitivity at December 31, 2006, is illustrated in the following table. This information reflects the balances 

of assets and liabilities whose rates are subject to change. As indicated in the table on the following page, the Company is liability-
sensitive during the early time periods and is asset-sensitive in the longer periods. The table shows the sensitivity of the statement of 
condition at one point in time and is not necessarily indicative of the position at future dates. 

18 

 
 
December 31, 2006    
Rate sensitive assets 
Federal funds sold 
Time deposits with banks 
Investment securities 
Loans, net of non-accruals 
Total earning assets 
Cumulative earning assets 
Rate sensitive liabilities 
Time deposits 
Other interest bearing deposits 
Securities sold under repurchase 

agreements 

Other borrowed funds 
Junior subordinated deferrable interest 

debentures 

Total interest bearing liabilities 
Cumulative sensitive liabilities 
Repricing gap 
Cumulative repricing gap 
Ratio of interest-sensitive assets to 

liabilities 

Ratio of cumulative, interest- sensitive 

assets to liabilities 

INTEREST RATE SENSITIVITY 
(Dollars in Thousands) 

   3 Months or
Less

Rate/Maturity

Over 3
Months 
to 1 Year

Over 1
Year to 5 
Years
(Dollars in Thousands) 

Over 5 
Years 

Total

   $

$

29,000
396  
27,155  
3,664,838

— $
—  
216,524  
319,527

—   $ 
—  
4,027,992  
460,461

   $ 3,721,389
   $ 3,721,389

$

536,051

$ 4,488,453

$ 4,257,440

$ 8,745,893

— 
—   
220,861   
572,270   
  $  793,131 
  $ 9,539,024 

  $

29,000
396  
4,492,532  
5,017,095

  $ 9,539,024

   $ 1,441,173
2,204,451  

 $ 1,517,241
—  

 $ 372,482
—  

  $ 

1,095 
—   

  $ 3,331,991  
2,204,451  

268,183
2,095,505  

135,974
—  

202,178
—  

177,975  

22,681  

—  

 $ 574,660

 $ 1,675,896

   $ 6,187,287
   $ 6,187,287
   $ (2,465,898) $ (1,139,845) $ 3,913,793
308,050  

 $ 7,863,183

 $ 8,437,843

(3,605,743)

(2,465,898)

100,000   
71   

706,335
2,095,576  

10,252   
  $  111,418 
  $ 8,549,261 
  $  681,713 
989,763   

210,908  

  $ 8,549,261  

  $ 989,763  

.601  

.601  

.320  

.541  

7.811  

1.037  

1.116  

7.119   

1.116   

The detailed inventory of statement of condition items contained in gap reports is the starting point of income simulation 
analysis. Income simulation analysis also focuses on the variability of net interest income and net income, but without the limitations 
of gap analysis. In particular, the fundamental, but often unstated, assumption of the gap approach that every statement of condition 
item that can re-price will do so to the full extent of any movement in market interest rates is taken into consideration in income 
simulation analysis. 

Accordingly, income simulation analysis captures not only the potential of assets and liabilities to mature or re-price, but also the 
probability that they will do so. Moreover, income simulation analysis focuses on the relative sensitivities of these balance sheet items 
and projects their behavior over an extended period of time in a motion picture rather than snapshot fashion. Finally, income 
simulation analysis permits management to assess the probable effects on balance sheet items not only of changes in market interest 
rates, but also of proposed strategies for responding to such changes. The Company and many other institutions rely primarily upon 
income simulation analysis in measuring and managing exposure to interest rate risk. 

19 

  
 
 
  
  
 
  
 
 
 
  
 
  
  
 
  
 
 
 
 
 
 
    
 
 
  
  
  
  
  
 
 
 
 
 
 
    
 
 
  
  
  
  
  
 
 
  
 
 
  
  
 
 
At December 31, 2006, based on these simulations, a rate shift of 200 basis points in interest rates up or a rate shift of 200 basis 

points down will not vary net interest income by more than 2.7% of projected 2007 net interest income.  The basis point shift in 
interest rates is a hypothetical rate scenario used to calibrate risk, and does not necessarily represent management’s current view of 
future market developments. The Company believes that it is properly positioned for a potential interest rate increase or decrease. 

All the measurements of risk described above are made based upon the Company’s business mix and interest rate exposures at 

the particular point in time. The exposure changes continuously as a result of the Company’s ongoing business and its risk 
management initiatives. While management believes these measures provide a meaningful representation of the Company’s interest 
rate sensitivity, they do not necessarily take into account all business developments that have an effect on net income, such as changes 
in credit quality or the size and composition of the statement of condition. 

Principal sources of liquidity and funding for the Company are dividends from subsidiaries and borrowed funds, with such funds 
being used to finance the Company’s cash flow requirements. The Company closely monitors the dividend restrictions and availability 
from the bank subsidiaries as disclosed in Note 20 to the Consolidated Financial Statements. At December 31, 2006, the aggregate 
amount legally available to be distributed to the Company from bank subsidiaries as dividends was approximately $140,250,000, 
assuming that each bank subsidiary continues to be classified as “well capitalized” under the applicable regulations and excluding 
certified surplus. Pursuant to Texas law, a Texas state bank’s lending limit is twenty-five percent of the bank’s capital and certified 
surplus. The board of directors of the bank determines how much surplus will be certified. Except to absorb losses in excess of 
undivided profits and uncertified surplus, certified surplus may not be reduced without the prior written approval of the Texas banking 
commissioner. The restricted capital (capital, surplus and certified surplus) of the bank subsidiaries was approximately $908,783,000 
as of December 31, 2006. The undivided profits of the bank subsidiaries were approximately $536,740,000 as of December 31, 2006. 

At December 31, 2006, the Company has outstanding $2,095,576,000 in other borrowed funds and $210,908,000 in junior 

subordinated deferrable interest debentures. In addition to borrowed funds and dividends, the Company has a number of other 
available alternatives to finance the growth of its existing banks as well as future growth and expansion. 

Capital 

The Company maintains an adequate level of capital as a margin of safety for its depositors and shareholders. At December 31, 

2006, shareholders’ equity was $842,056,000 compared to $792,867,000 at December 31, 2005, an increase of $49,189,000, or 6.2%. 
Shareholders’ equity increased due to the retention of earnings offset by the payment of cash dividends to shareholders. The 
accumulated other comprehensive loss is not included in the calculation of regulatory capital ratios. 

During 1990, the Federal Reserve Board (“FRB”) adopted a minimum leverage ratio of 3% for the most highly rated bank 

holding companies and at least 4% to 5% for all other bank holding companies. The Company’s leverage ratio (defined as 
shareholders’ equity plus eligible trust preferred securities issued and outstanding less goodwill and certain other intangibles divided 
by average quarterly assets) was 7.36% at December 31, 2006 and 7.26% at December 31, 2005. The core deposit intangibles and 
goodwill of $316,604,000 as of December 31, 2006, recorded in connection with financial institution acquisitions of the Company 
after February 1992, are deducted from the sum of core capital elements when determining the capital ratios of the Company. The 
substantial increase in core deposit intangibles and goodwill and the resulting decrease in the Company’s leverage ratio can be 
attributed to the LFIN acquisition. 

The FRB has adopted risk-based capital guidelines which assign risk weightings to assets and off-balance sheet items. The 

guidelines also define and set minimum capital requirements (risk-based capital  

20 

 
 
ratios). Under the final 1992 rules, all banks are required to have Tier 1 capital of at least 4.0% of risk-weighted assets and total capital 
of 8.0% of risk-weighted assets. Tier 1 capital consists principally of shareholders’ equity plus trust preferred securities issued and 
outstanding less goodwill and certain other intangibles, while total capital consists of Tier 1 capital, certain debt instruments and a 
portion of the reserve for loan losses. In order to be deemed well capitalized pursuant to the regulations, an institution must have a 
total risk-weighted capital ratio of 10%, a Tier 1 risk-weighted ratio of 6% and a Tier 1 leverage ratio of 5%. The Company had risk-
weighted Tier 1 capital ratios of 12.49% and 12.97% and risk weighted total capital ratios of 13.61% and 14.22% as of December 31, 
2006 and 2005, respectively, which are well above the minimum regulatory requirements and exceed the well capitalized ratios (see 
Note 20 to Notes to Consolidated Financial Statements). 

During the past few years the Company has expanded its banking facilities. Among the activities and commitments the Company 

funded during 2006 and 2005 were certain capital expenditures relating to the modernization and improvement of several existing 
bank facilities and the expansion of the bank branch network. 

Junior Subordinated Deferrable Interest Debentures 

The Company has formed ten statutory business trusts under the laws of the State of Delaware, for the purpose of issuing trust 

preferred securities. As part of the LFIN acquisition, the Company acquired three additional statutory business trusts previously 
formed by LFIN for the purpose of issuing trust preferred securities. The ten statutory business trusts formed by the Company and the 
three business trusts acquired in the LFIN transaction (the “Trusts”) have each issued Capital and Common Securities and invested the 
proceeds thereof in an equivalent amount of junior subordinated debentures (the “Debentures”) issued by the Company or LFIN, as 
appropriate. The Company has succeeded to the obligations of LFIN under the LFIN Debentures, which have an outstanding principal 
balance of $20,620,000. The Debentures will mature on various dates; however the Debentures may be redeemed at specified 
prepayment prices, in whole or in part after the optional redemption dates specified in the respective indentures or in whole upon the 
occurrence of any one of certain legal, regulatory or tax events specified in respective indentures. As of December 31, 2006, the 
principal amount of debentures outstanding totaled $210,908,000. 

On July 25, 2006, pursuant to the Indenture dated as of July 16, 2001, between the Company and The Bank of New York, as 

Trustee, the Company redeemed all of its Floating Rate Junior Subordinated Debt Securities (the “Debt Securities”), issued to 
International Bancshares Capital Trust II (“Trust II”) at a redemption price equal to approximately $27,998,000, which includes 
accrued interest to, but not including, the redemption date. 

In accordance with the Amended and Restated Declaration of Trust dated as of July 16, 2001 between the Company and The 
Bank of New York as Institutional Trustee, the proceeds from the redemption of the Debt Securities were used to simultaneously 
redeem an equal amount of Trust II Floating Capital Securities and the Trust II Floating Rate Common Securities issued by Trust II. 

On September 30, 2006, pursuant to the Indenture dated as of September 20, 2001, between Local Financial Corporation and The 

Bank of New York, as Trustee, the Company redeemed all of its Fixed Rate Junior Subordinated Debt Securities (the “Debt 
Securities”), issued to Local Financial Capital Trust I (“LFIN Trust I”) at a redemption price equal to approximately $41,155,625, 
which includes accrued interest to, but not including, the redemption date. 

In accordance with the Amended and Restated Declaration of Trust dated as of September 20, 2001 between Local Financial 
Capital Corporation and The Bank of New York as Institutional Trustee, the proceeds from the redemption of the Debt Securities were 
used to simultaneously redeem an equal  

21 

 
 
amount of LFIN Trust I Fixed Rate Capital Securities and the LFIN Trust I Fixed Rate Common Securities issued by LFIN Trust I.

On December 8, 2006, pursuant to the Indenture dated as of November 28, 2001, between the Company and Wilmington Trust 

company, as Trustee, the Company redeemed all of its Floating Rate Junior Subordinated Debt Securities (the “Debt Securities”) 
issued to International Bancshares Capital Trust III (“Trust III”) at a redemption price equal to approximately $34,538,000, which 
includes accrued interest to, but not including, the redemption date. 

In accordance with the Amended and Restated Declaration of Trust dated as of November 28, 2001, between the Company and 

Wilmington Trust Company, as the Institutional Trustee and Delaware Trustee and the Administrators named therein, the proceeds 
from the redemption of the Debt Securities were used to simultaneously redeem an equal amount of Trust III floating rate Capital 
Securities and the Trust III floating rate Common Securities issued by Trust III. 

On June 9, 2006, the Company formed International Bancshares Corporation Capital Trust IX (“Trust IX”), its ninth statutory 

business trust formed under the laws of the State of Delaware, for the purpose of issuing trust preferred securities. On July 27, 2006, 
Trust IX issued $40,000,000 of Capital Securities. The Capital Securities accrue interest for the first five years at a fixed rate of 
7.10%, and subsequently at a floating rate of 1.62% over the London Interbank Offered Rate (“LIBOR”), and interest is payable 
quarterly beginning October 1, 2006. The Trust IX Capital Securities will mature on October 1, 2036; however, the Capital Securities 
may be redeemed at specified prepayment prices (a) in whole or in part on any interest payment date on or after October 1, 2011, or 
(b) in whole or in part within 90 days upon the occurrence of certain legal, regulatory, or tax events. The Capital Securities are 
subordinated and junior in right of payment to all present and future senior indebtedness of the Company. The Company has fully and 
unconditionally guaranteed the obligation of Trust IX with respect to the Capital Securities. The Company has the right, unless an 
Event of Default has occurred and is continuing, to defer payment of interest on the Capital Securities for up to twenty consecutive 
quarterly periods. The redemption prior to maturity of any of the Capital Securities may require the prior approval of the Federal 
Reserve and/or other regulatory agencies. 

On November 8, 2006, the Company formed International Bancshares Corporation Capital Trust X (“Trust X”), its tenth 

statutory business trust formed under the laws of the State of Delaware, for the purpose of issuing trust preferred securities. On 
November 15, 2006, Trust X issued $33,000,000 of Capital Securities. The Capital Securities accrue interest for the first five years at a 
fixed rate of 6.66% and subsequently at a floating rate of 1.65% over the three month LIBOR, and interest is payable quarterly 
beginning February 1, 2007. The Trust X Capital Securities will mature on February 1, 2037; however, the Capital Securities may be 
redeemed at specified prepayment prices (a) in whole or in part on any interest payment date on or after February 1, 2012, or (b) in 
whole or in part within 90 days upon the occurrence of certain legal, regulatory, or tax events. The Capital Securities are subordinated 
and junior in right of payment to all present and future senior indebtedness of the Company. The Company has fully and 
unconditionally guaranteed the obligation of Trust X with respect to the Capital Securities. The Company has the right, unless an 
Event of Default has occurred and is continuing, to defer payment of interest on the Capital Securities for up to twenty consecutive 
quarterly periods. The redemption prior to maturity of any of the Capital Securities may require the prior approval of the Federal 
Reserve and/or other regulatory agencies. 

22 

 
The Debentures are subordinated and junior in right of payment to all present and future senior indebtedness (as defined in the 
respective indentures) of the Company, and are pari passu with one another. The interest rate payable on, and the payment terms of 
the Debentures are the same as the distribution rate and payment terms of the respective issues of Capital and Common Securities 
issued by the Trusts. The Company has fully and unconditionally guaranteed the obligations of each of the Trusts with respect to the 
Capital and Common Securities. The Company has the right, unless an Event of Default (as defined in the Indentures) has occurred 
and is continuing, to defer payment of interest on the Debentures for up to ten consecutive semi-annual periods on Trusts I and IV and 
LFIN Trust II and for up to twenty consecutive quarterly periods on Trusts V, VI, VII, VIII, IX and X and LFIN Trust III. If interest 
payments on any of the Debentures are deferred, distributions on both the Capital and Common Securities related to that Debenture 
would also be deferred. The redemption prior to maturity of any of the Debentures may require the prior approval of the Federal 
Reserve and/or other regulatory bodies. 

For financial reporting purposes, the Trusts are treated as investments of the Company and not consolidated in the consolidated 

financial statements. Although the Capital Securities issued by each of the Trusts are not included as a component of shareholders’ 
equity on the consolidated statement of condition, the Capital Securities are treated as capital for regulatory purposes. Specifically, 
under applicable regulatory guidelines, the Capital Securities issued by the Trusts qualify as Tier 1 capital up to a maximum of 25% of 
Tier 1 capital on an aggregate basis. Any amount that exceeds the 25% threshold would qualify as Tier 2 capital. For December 31, 
2006, the total $210,908,000 of the Capital Securities outstanding qualified as Tier 1 capital. 

In March 2005, the Federal Reserve Board issued a final rule that would continue to allow the inclusion of trust preferred 
securities in Tier 1 capital, but with stricter quantitative limits. Under the final rule, after a transition period ending March 31, 2009, 
the aggregate amount of trust preferred securities and certain other capital elements would be limited to 25% of Tier 1 capital 
elements, net of goodwill, less any associated deferred tax liability. The amount of trust preferred securities and certain other elements 
in excess of the limit could be included in Tier 2 capital, subject to restrictions. Bank holding companies with significant international 
operations will be expected to limit trust preferred securities to 15% of Tier 1 capital elements, net of goodwill; however, they may 
include qualifying mandatory convertible preferred securities up to the 25% limit. The Company believes that substantially all of the 
current trust preferred securities will be included in Tier 1 capital after the five-year transition period ending March 31, 2009. 

The following table illustrates key information about each of the Debentures and their interest rates at December 31, 2006: 

Junior 
Subordinated 
Deferrable 
Interest 
Debentures 
(in thousands) 
  $ 10,252 
  $ 22,681 
  $ 20,558 
  $ 25,662 
  $ 10,310 
  $ 25,566 
  $ 41,238 
  $ 34,021 
  $ 10,310 
  $ 10,310 
  $ 210,908 

Trust I 
Trust IV 
Trust V 
Trust VI 
Trust VII 
Trust VIII 
Trust IX 
Trust X 
LFIN Trust II 
LFIN Trust III 

Repricing
Frequency

Interest
Rate

Interest
Rate Index(1)

  Maturity Date 

Optional
Redemption Date  

Fixed 
Semi-Annually  

     Quarterly
     Quarterly
     Quarterly
     Quarterly
     Quarterly
     Quarterly

     Quarterly

Semi-Annually  

10.18 %
  9.09 %  
  9.02 %  
  8.82 %  
  8.62 %  
  8.42 %  
  7.10 %  
  6.66 %  
  9.17 %  
8.82 %

Fixed
LIBOR + 3.70
LIBOR + 3.65
LIBOR + 3.45
LIBOR + 3.25
LIBOR + 3.05
Fixed
Fixed
LIBOR + 3.625  
LIBOR + 3.45

June 2031 
April 2032 
July 2032 
November 2032    
April 2033 
October 2033 
October 2036 
February 2037 
July 2032 
November 2032    

  June 2011
  April 2007
  July 2007
  November 2007  
  April 2008
  October 2008
  October 2011
  February 2012
  July 2007
  November 2007

(1)          Trust IX and Trust X accrue interest at a fixed rate for the first five years, then floating at LIBOR+1.62 and LIBOR+1.65 

thereafter, respectively. 

23 

 
 
  
  
  
 
 
  
  
  
  
 
 
 
 
 
 
  
  
 
 
  
    
  
  
    
 
  
 
 
  
 
 
  
 
 
  
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
    
  
 
 
  
  
  
    
 
 
 
 
 
 
 
 
    
  
 
 
 
Contractual Obligations and Commercial Commitments

The following table presents contractual cash obligations of the Company (other than deposit liabilities) as of December 31, 

2006: 

Payments due by Period 

Contractual Cash Obligations    

Securities sold under repurchase agreements  
Federal Home Loan Bank borrowings 
Junior subordinated deferrable interest 

debentures 

Total Contractual Cash Obligations 

Total

$ 706,335
$ 2,095,576

Less than
One Year

One to
Three Years 

(Dollars in Thousands) 
 $ 2,178     
—  

 $ 419,157
  2,095,505  

   Three to 
Five Years   
  $ — 
   —   

After
Five Years  

     $ 285,000  
71  

$ 210,908
$ 3,012,819

—  
$ 2,514,662

—  
$ 2,178

   —   
  $ — 

210,908  
     $ 495,979

The following table presents contractual commercial commitments of the Company (other than deposit liabilities) as of 

December 31, 2006: 

Commercial Commitments    

Total

Financial and Performance Standby 

Letters of Credit 

Commercial Letters of Credit 
Credit Card Lines 
Other Commercial Commitments 

Total Commercial Commitments 

Amount of Commitment Expiration Per Period 
   Three to 

One to
Three Years

Less than
One Year

Five Years    

(Dollars in Thousands) 

$ 124,113
22,314
$
$
36,404
$ 1,860,382
$ 2,043,213

 $ 117,199
22,314  
36,404  
1,159,433
$ 1,335,350

 $

6,814  
—  
—  

555,884   

$ 562,698

   $ 

100 
—   
—   
101,325   
   $ 101,425 

After
Five Years  

 $ —  
—  
—  
43,740
$ 43,740

Due to the nature of the Company’s commercial commitments, including unfunded loan commitments and lines of credit, the 
amounts presented above do not necessarily reflect the amounts the Company anticipates funding in the periods presented above. 

Critical Accounting Policies 

The Company has established various accounting policies which govern the application of accounting principles in the 

preparation of the Company’s consolidated financial statements. The significant accounting policies are described in the Notes to the 
Consolidated Financial Statements. Certain accounting policies involve significant subjective judgments and assumptions by 
management which have a material impact on the carrying value of certain assets and liabilities; management considers such 
accounting policies to be critical accounting policies. 

The Company considers its Allowance for Possible Loan Losses as a policy critical to the sound operations of the bank 
subsidiaries. The allowance for possible loan losses consists of the aggregate loan loss allowances of the bank subsidiaries. The 
allowances are established through charges to operations in the form of provisions for possible loan losses. Loan losses or recoveries 
are charged or credited directly to the allowances. The allowance for possible loan losses of each bank subsidiary is maintained at a 
level considered appropriate by management, based on estimated probable losses in the loan portfolio. The allowance is derived from 
the following elements: (i) allowances established on specific loans and (ii) allowances based on historical loss experience on the 
Company’s remaining loan portfolio, which includes general economic conditions and other qualitative risk factors both internal and 
external to the Company. See also discussion regarding the allowance for possible loan losses and provision for possible  

24 

  
  
 
 
  
 
 
  
 
 
 
  
 
 
 
 
 
  
  
 
 
 
  
  
    
  
 
 
  
 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
loan losses included in the results of operations and “Provision and Allowance for Possible Loan Losses” included in Notes 1 and 5 of 
the Notes to Consolidated Financial Statements. 

The specific loan loss provision is determined using the following methods. On a weekly basis, loan past due reports are 

reviewed by the servicing loan officer to determine if a loan has any potential problem and if a loan should be placed on the 
Company’s internal classified report. Additionally, the Company’s credit department reviews the majority of the loans regardless of 
whether they are past due and segregates any loans with potential problems for further review. The credit department will discuss the 
potential problem loans with the servicing loan officers to determine any relevant issues that were not discovered in the evaluation. 
Also, any analysis on loans that is provided through examinations by regulatory authorities is considered in the review process. After 
the above analysis is completed, the Company will determine if a loan should be placed on an internal classified report because of 
issues related to the analysis of the credit, credit documents, collateral and/or payment history. 

The Company’s internal classified report is segregated into the following categories: (i) “Pass Credits,” (ii) “Special Review 
Credits,” (iii) “Watch List Credits-Pass Credits,” or (iv) “Watch List Credits-Substandard and Doubtful Credits.” The loans placed in 
the “Pass Credits” category reflect the Company’s opinion that the loan conforms to the bank’s lending policies, which includes the 
borrower’s ability to repay, the value of the underlying collateral, if any, as it relates to the outstanding indebtedness of the loan, and 
the economic environment and industry in which the borrower operates. The loans placed in the “Special Review Credits” or the 
“Watch List Credits-Pass Credits” category reflect the Company’s opinion that the loans reflect potential weakness which require 
monitoring on a more frequent basis; however, the “Special Review Credits” or the “Watch List Credits-Pass Credits” are not 
considered to need a specific reserve at the time, but are reviewed and discussed on a regular basis with the credit department and the 
lending staff to determine if a change in category is warranted. The loans placed in the “Watch List Credits-Substandard and Doubtful 
Credits” category reflect the Company’s opinion that the loans contain clearly pronounced credit weaknesses and/or inherent financial 
weaknesses of the borrower. Credits classified as “Watch List Credits-Substandard and Doubtful Credits” are potentially evaluated 
under Statement of Financial Accounting Standards No. 114, “Accounting by Creditors for Impairment of a Loan,” criteria and, if 
deemed necessary a specific reserve is allocated to the credit. The specific reserve allocated under SFAS No. 114, is based on (1) the 
present value of expected future cash flows discounted at the loan’s effective interest rate; (2) the loan’s observable market price; or 
(3) the fair value of the collateral if the loan is collateral dependent. Substantially all of the Company’s loans evaluated under SFAS 
No. 114 are measured using the fair value of collateral method. In limited cases, the Company may use other methods to determine the 
specific reserve of a loan under SFAS No. 114 if such loan is not collateral dependent. 

The allowance, based on historical loss experience on the Company’s remaining loan portfolio, which includes the “Pass 

Credits,” “Special Review Credits,” “Watch List Credits-Pass Credits,” and “Watch List Credits-Substandard and Doubtful Credits” is 
determined by segregating the remaining loan portfolio into certain categories such as commercial loans, installment loans, 
international loans, loan concentrations and overdrafts. Installment loans are then further segregated by number of days past due. A 
historical loss percentage, adjusted for (i) management’s evaluation of changes in lending policies and procedures, (ii) current 
economic conditions in the market area served by the Company, (iii) other risk factors, (iv) the effectiveness of the internal loan 
review function, (v) changes in loan portfolios, and (vi) the composition and concentration of credit volume is applied to each 
category. Each category is then added together to determine the allowance allocated under Statement of Financial Accounting 
Standards No. 5. 

The Company’s management continually reviews the allowance for loan loss of the bank subsidiaries using the amounts 

determined from the allowances established on specific loans, the allowance established based on historical percentages and the loans 
charged off and recoveries to establish an appropriate amount to maintain in the Company’s allowance for loan loss. If the bases of the 
Company’s assumptions  

25 

 
 
change, the allowance for loan loss would either decrease or increase and the Company would increase or decrease the provision for 
loan loss charged to operations accordingly. 

Through December 31, 2005, the Company accounted for stock-based employee compensation plans based on the intrinsic value 
method provided in Accounting Principles Board Opinion No. 25 “Accounting for Stock Issued to Employees,” (“APB No. 25”), and 
related interpretations. Because the exercise price of the Company’s employee stock options equals the market price of the underlying 
stock on the measurement date, which is generally the date of grant, no compensation expense was recognized on options granted. 
Compensation expense for stock awards is based on the market price of the stock on the measurement date, which is generally the date 
of grant, and is recognized ratably over the service period of the award. 

Statement of Financial Accounting Standards No. 123 (“SFAS No. 123”), “Accounting for Stock-Based Compensation,” as 
amended by Statement of Financial Accounting Standards No. 148 (“SFAS No. 148”), “Accounting for Stock-Based Compensation—
Transition and Disclosure, an amendment of FASB Statement No. 123,” requires pro forma disclosures of net income and earnings per 
share for companies not adopting its fair value accounting method for stock-based employee compensation. The pro forma disclosures 
presented in Note 3 in the accompanying Notes to Consolidated Financial Statements included elsewhere in this report use the fair 
value method of SFAS No. 123 to measure compensation expense for stock-based employee compensation plans. The fair value of 
stock options granted was estimated as the measurement date, which is generally the date of grant, using the Black-Sholes-Merton 
option-pricing model. This model was developed for use in estimating the fair value of publicly traded options that have no vesting 
restrictions and are fully transferable. Additionally, the model requires the input of highly subjective assumptions. Because the 
Company’s employee stock options have characteristics significantly different from those of publicly traded options, and because 
changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the Black-Sholes-
Merton option-pricing model does not necessarily provide a reliable single measure of the fair value of the Company’s stock options. 

In December 2004, the Financial Accounting Standards Board (“FASB”) issued Statement of Financial Accounting Standards 

No. 123R (“SFAS No. 123R”), “Share-Based Payment (Revised 2004).”  Among other things, SFAS No. 123R eliminates the ability 
to account for stock-based compensation using APB No. 25 and requires that such transactions be recognized as compensation cost in 
the income statement based on their fair values on the date of the grant. SFAS No. 123R was adopted by the Company on January 1, 
2006. 

Recent Accounting Standards Issued 

See Note 1—Summary of Significant Accounting Policies in the accompanying Notes to the Consolidated Financial Statements 

for details of recently issued and recently adopted accounting standards and their impact on the Company’s consolidated financial 
statements. 

Common Stock and Dividends 

The Company had issued and outstanding 63,015,435 shares of $1.00 par value Common Stock held by approximately 2,563 

holders of record at February 22, 2007. The book value of the stock at December 31, 2006 was $14.41 per share compared with 
$13.66 per share at December 31, 2005. 

26 

 
The Common Stock is traded on the NASDAQ National Market under the symbol “IBOC.”  The following table sets forth the 
approximate high and low bid prices in the Company’s Common Stock during 2005 and 2006, as quoted on the NASDAQ National 
Market for each of the quarters in the two year period ended December 31, 2006. Some of the quotations reflect inter-dealer prices, 
without retail mark-up, mark-down or commission and may not necessarily represent actual transactions. The closing sales price of the 
Company’s Common Stock was $31.37 per share at February 22, 2007. 

2006:    First quarter 

   Second quarter
   Third quarter 
   Fourth quarter

2005:    First quarter 

   Second quarter
   Third quarter 
   Fourth quarter

High
$ 29.69
30.12
30.23  
31.87

High
$ 31.89
30.06  
30.49  
30.49  

Low    
 $ 28.49   
27.48   
27.52   
29.20   
Low    
 $ 27.52   
26.80   
28.01   
29.15   

The Company paid cash dividends to the shareholders in 2006 of $.35 and $.35 per share on May 1, 2006 and November 1, 2006, 

respectively to all holders of record on April 17, 2006 and October 16, 2006, respectively, or $44,166,000 in the aggregate during 
2006. In 2005, the Company paid cash dividends of $.40 ($.32 adjusted for the effect of the May 2, 2005 stock dividend) and $.32 per 
share on April 30, and November 1, 2005, respectively, or $40,833,000 in the aggregate during 2005. The Company has no set 
schedule for paying cash or stock dividends and the amount paid in previous periods is not necessarily indicative of amounts that may 
be paid or available to be paid in future periods. In addition, the Company has issued stock dividends during the last five-year period 
as follows: 

Date    
May 20, 2002 
May 19, 2003 
May  3, 2004 
May  2, 2005 
May 2006 

  Stock Dividend   
25%
  25%  
  25%  
  25%  
  0%  

The Company’s principal source of funds to pay cash dividends on its Common Stock is cash dividends from its bank 
subsidiaries. There are certain statutory limitations on the payment of dividends from the subsidiary banks. For a discussion of the 
limitations, please see Note 20 of Notes to Consolidated Financial Statements. 

Stock Repurchase Program 

The Company expanded its formal stock repurchase program on November 2, 2006. Under the expanded stock repurchase 

program, the Company is authorized to repurchase up to $200,000,000 of its common stock through December 2007. Stock 
repurchases may be made from time to time, on the open market or through private transactions. Shares repurchased in this program 
will be held in treasury for reissue for various corporate purposes, including employee stock option plans. As of February 22, 2007, a 
total of 5,012,258 shares had been repurchased under this program at a cost of $183,971,000. Stock repurchases are reviewed quarterly 
at the Company’s Board of Directors meetings and the Board of Directors has stated that the aggregate investment in treasury stock 
should not exceed $220,973,000. In the  

27 

  
  
  
 
 
  
  
  
 
 
 
 
  
  
 
  
  
  
 
 
 
 
  
 
  
 
  
 
 
 
 
 
 
past, the Board of Directors has increased previous caps on treasury stock once they were met, but there are no assurances that an 
increase of the $220,973,000 cap will occur in the future. As of February 22, 2007, the Company has approximately $204,944,000 
invested in treasury shares, which amount has been accumulated since the inception of the Company. 

Share repurchases are only conducted under publicly announced repurchase programs approved by the Board of Directors. The 

following table includes information about share repurchases for the quarter ended December 31, 2006. 

October 1 – October 31, 2006 
November 1 – November 30, 2006 
December 1 – December 31, 2006 

Total Number
of Shares 
Purchased
—  
110,067
8,898  
118,965

Average
Price Paid 
Per Share
—  
31.00
  30.34  
$ 30.95

Shares Purchased as 
Part of a Publicly 
Announced Program    

—   
110,067   
8,168   
118,235 

Approximate Dollar
Value of Shares 
Available for 
Repurchase(1)
  $ 21,379,000
   17,967,000
   17,697,000  

(1)          The formal stock repurchase program was initiated in 1999 and has been expanded periodically with the most recent expansion 

occurring in November 2006. The current program allows for the repurchase of up to $200,000,000 of treasury stock through 
December 2007 of which $17,697,000 remains. 

Equity Compensation Plan Information 

The following table sets forth information as of December 31, 2006, with respect to the Company’s equity compensation plans: 

Plan Category    
Equity Compensation plans approved by 

security holders 

Equity Compensation plans not approved 

by security holders(1) 
Total 

(A) 
Number of securities to
be issued upon exercise
of outstanding options, 
warrants and rights

(B) 
Weighted average 
exercise price of 
outstanding options, 
warrants and rights

  1,237,768  

  140,382  
1,378,150

 $ 17.96

 $ 10.66
$ 17.22

(C) 
Number of securities 
remaining available for 
future issuance under 
equity compensation plans 
(excluding securities 
reflected in column A)

  130,200  

—  
  130,200

(1)          The Company granted non-qualified stock options exercisable for a total of 140,382 shares, adjusted for stock dividends, of 

Common Stock to certain employees of the GulfStar Group. The grants were not made under any of the shareholder approved 
Stock Option Plans. The options are exercisable for a period of seven years and vest in equal increments over a period of five 
years. All options granted to the GulfStar Group employees had an option price of not less than the fair market value of the 
Common Stock on the date of grant. 

28 

 
 
  
  
 
 
 
  
 
 
 
 
 
  
 
 
  
  
  
 
 
 
 
  
 
  
  
 
 
 
 
 
 
 
  
  
  
 
 
 
  
 
 
  
 
  
 
 
 
 
  
 
 
 
  
 
  
 
 
 
 
 
 
 
 
Stock Performance 

Total Return To Shareholders 
(Includes reinvestment of dividends) 

Company / Index    
INTERNATIONAL BANCSHARES CORP  
S&P 500 INDEX 
S&P 500 BANKS 

  Base Period  
2001
  100  
100
  100  

2002
119.18  
77.90
98.98  

2003
182.18  
100.25
125.37  

29 

INDEXED RETURNS 

December 31, 
2004 
194.06   
111.15   
143.44   

2005 
184.82  
116.61
141.35  

2006
199.21  
135.03
164.11  

 
  
 
  
 
 
  
 
  
 
 
 
 
  
 
 
 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

The Board of Directors and Shareholders 
International Bancshares Corporation: 

We have audited the accompanying consolidated statements of condition of International Bancshares Corporation and subsidiaries (the 
“Company”) as of December 31, 2006 and 2005, and the related consolidated statements of income, comprehensive income, 
shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2006. These consolidated 
financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these 
consolidated financial statements based on our audits. 

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those 
standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of 
material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial 
statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as 
evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. 

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of 
International Bancshares Corporation and subsidiaries as of December 31, 2006 and 2005, and the results of their operations and their 
cash flows for each of the years in the three-year period ended December 31, 2006, in conformity with U.S. generally accepted 
accounting principles. 

As discussed in Note 1 to the Consolidated Financial Statements, effective January 1, 2006, the Company adopted Statement of 
Financial Accounting Standards No. 123R, Share-based Payment, to account for stock-based compensation. 

We also have audited in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 
effectiveness of International Bancshares Corporation’s internal control over financial reporting as of December 31, 2006, based on 
criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway 
Commission (COSO), and our report dated February 28, 2007 expressed an unqualified opinion on management’s assessment of, and 
the effective operation of, internal control over financial reporting. 
/s/ KPMG LLP 

San Antonio, Texas 
February 28, 2007 

30 

 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Consolidated Statements of Condition 

December 31, 2006 and 2005 
(Dollars in Thousands, Except Per Share Amounts) 

Cash and due from banks 
Federal funds sold 

Assets

Total cash and cash equivalents 

Time deposits with banks 
Investment securities: 

Held to maturity (Market value of $2,375 on December 31, 2006 and $2,375 

on December 31, 2005) 

Available for sale (Amortized cost of $4,552,866 on December 31, 2006 and 

$4,331,517 on December 31, 2005) 
Total investment securities 
Loans, net of unearned discounts 

Less allowance for possible loan losses 

Net loans 

Bank premises and equipment, net 
Accrued interest receivable 
Other investments 
Identified intangible assets, net 
Goodwill, net 
Other assets 

Total assets 

2006 

2005

$

  $ 

268,207 
29,000   
297,207   
396   

216,118  
242,000  

458,118  

396  

2,375   

2,375  

4,490,157   
4,492,532   
5,034,810   
(64,537 ) 
4,970,273   
390,323   
57,288   
343,909   
34,358   
282,246   
42,922   
$ 10,911,454 

4,266,952  

4,269,327  

4,625,692
(77,796)
4,547,896  

351,986  
48,647
332,675  
39,224
289,262  
54,322  
  $ 10,391,853

See accompanying notes to consolidated financial statements. 

31 

  
 
 
  
 
  
 
    
 
 
 
 
 
    
 
 
 
 
 
 
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Consolidated Statements of Condition (Continued) 

December 31, 2006 and 2005 
(Dollars in Thousands, Except Per Share Amounts) 

Liabilities and Shareholders’ Equity:

Liabilities: 
Deposits: 

Demand—non-interest bearing 
Savings and interest bearing demand 
Time 

Total deposits 

Securities sold under repurchase agreements
Other borrowed funds 
Junior subordinated deferrable interest debentures
Other liabilities 

Total liabilities 

Commitments, Contingent Liabilities and Other Tax Matters (Note 17)
Shareholders’ equity: 

Common shares of $1.00 par value. Authorized 275,000,000 shares; issued 

86,224,046 shares on December 31, 2006 and 86,059,121 shares on 
December 31, 2005 

Surplus 
Retained earnings 
Accumulated other comprehensive loss 

Less cost of shares in treasury, 23,312,331 shares on December 31, 2006 and 

22,330,354 shares on December 31, 2005
Total shareholders’ equity 
Total liabilities and shareholders’ equity 

2006 

2005

$ 1,453,476 
2,204,451   
3,331,991   
6,989,918   
706,335   
2,095,576   
210,908   
66,661   
10,069,398   

  $  1,339,380  
2,156,234  
3,160,812

6,656,426  

760,762  
1,870,075  
236,391
75,332  

9,598,986  

86,224   
138,247   
861,251   
(40,390 ) 
1,045,332   

(203,276 ) 
842,056   
$ 10,911,454 

86,059  
135,619  
788,416  
(41,968)
968,126  

(175,259)

792,867
  $ 10,391,853

See accompanying notes to consolidated financial statements. 

32 

  
 
  
 
  
 
    
 
    
 
 
    
 
 
 
 
 
 
 
 
    
 
 
    
 
 
 
  
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Consolidated Statements of Income 

Years ended December 31, 2006, 2005 and 2004 
(Dollars in Thousands, Except Per Share Amounts) 

Interest income: 

Loans, including fees 
Federal funds sold 
Investment securities: 

Taxable 
Tax-exempt 

Other interest income 

Total interest income 

Interest expense: 

Savings and interest bearing demand deposits
Time deposits 
Securities sold under repurchase agreements
Other borrowings 
Junior subordinated deferrable interest debentures
Senior notes 

Total interest expense 
Net interest income 

Provision for possible loan losses 

Net interest income after provision for possible loan losses 

Non-interest income: 

Service charges on deposit accounts 
Other service charges, commissions and fees

Banking 
Non-banking 

Investment securities transactions, net 
Other investments, net 
Other income 

Total non-interest income 

2006

2005 

2004

$ 400,020
3,596   

  $ 339,450 
3,668   

 $ 236,079  
1,577

200,474   
4,577   
406   
609,073   

40,444   
123,077   
30,137   
103,362   
22,568   
—   
319,588   
289,485   
3,849   
285,636   

160,175   
4,862   
550   
508,705   

26,936   
73,234   
27,384   
60,689   
18,587   
—   
206,830   
301,875   
960   
300,915   

84,770   

83,917   

29,523   
21,605   
(930) 
20,035   
21,968   
176,971

25,212   
12,248   
(181 ) 
20,629   
25,397   
167,222 

109,092  
5,071  
559  

352,378  

13,797  
44,659  
19,865
16,746  
13,152
383  

108,602

243,776  

5,196  

238,580  

73,877  

19,320  
7,083  
8,884
13,012  
12,640  

134,816

See accompanying notes to consolidated financial statements. 

33 

  
 
 
  
 
  
  
 
  
    
 
 
 
  
    
 
 
 
 
 
 
 
 
  
    
 
 
 
 
 
 
 
 
 
 
 
  
    
 
 
 
 
 
  
    
 
 
 
 
 
 
  
  
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Consolidated Statements of Income (Continued) 

Years ended December 31, 2006, 2005 and 2004 
(Dollars in Thousands, Except Per Share Amounts) 

Non-interest expense: 

Employee compensation and benefits 
Occupancy 
Depreciation of bank premises and equipment
Professional fees 
Stationery and supplies 
Amortization of identified intangible assets
Advertising 
Other 

Total non-interest expense 
Income before income taxes 

Minority interest in consolidated subsidiaries
Provision for income taxes 

Net income 

Basic earnings per common share: 

Weighted average number of shares outstanding
Net income 

Fully diluted earnings per common share: 

Weighted average number of shares outstanding
Net income 

2006

2005 

2004

$

 $

124,359
27,886
28,251  
11,050  
6,490  
4,866  
12,052
73,723  

288,677  

173,930  

40  
56,889

$

117,001

$

113,620 
25,053   
25,538   
12,497   
5,809   
5,176   
10,596   
57,699   
255,988   
212,149   
—   
71,370   
140,779 

63,133,522  
1.85

$

63,695,017   
2.21 

$

63,776,888  
1.83

$

64,485,167   
2.18 

$

  $ 

83,631  
18,403
18,975  
6,513  
5,075  
3,681  
10,082
50,124  

196,484  

176,912  

—  
57,880

  $ 

119,032

62,134,149  
1.92

  $ 

63,380,556  
  $ 
1.88

See accompanying notes to consolidated financial statements. 

34 

  
 
  
 
 
  
 
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
    
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Consolidated Statements of Comprehensive Income 

Years ended December 31, 2006, 2005, and 2004 
(Dollars in Thousands) 

Net income 
Other comprehensive income, net of tax: 

Net unrealized gains (losses) on securities available for sale arising 

during the year 

Reclassification adjustment for (losses) gains on securities available 

for sale included in net income 

Comprehensive income 

2006
$117,001

2005 
  $ 140,779 

2004
  $119,032  

2,798

(58,397 ) 

(6,361 )

(1,220 )

$118,579

1,419   
  $  83,801 

8,529

  $121,200

See accompanying notes to consolidated financial statements. 

35 

  
 
  
 
 
  
 
 
 
 
 
    
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Consolidated Statements of Shareholders’ Equity 

Years ended December 31, 2006, 2005 and 2004 
(in Thousands) 

Balance at December 31, 2003 

Net income 
Dividends: 

Shares issued 
Cash 

Purchase of treasury stock 
Exercise of stock options 
Tax benefit for exercise of stock options   
Stock issued in acquisition 
Other comprehensive income, net of 

tax: 
Net change in unrealized gains and 

losses on available for sale 
securities, net of reclassification 
adjustment 

Balance at December 31, 2004 

Net income 
Dividends: 

Shares issued 
Cash 

Purchase of treasury stock 
Exercise of stock options 
Tax benefit for exercise of stock options   
Other comprehensive income, net of 

tax: 
Net change in unrealized gains and 

losses on available for sale 
securities, net of reclassification 
adjustment 

Balance at December 31, 2005 

Net income 
Dividends: 

Shares issued 
Cash 

Purchase of treasury stock 
Exercise of stock options 
Stock based compensation expense 

recognized in earnings 

Other comprehensive income, net of 

tax: 
Net change in unrealized gains and 

losses on available for sale 
securities, net of reclassification 
adjustment 

Balance at December 31, 2006 

   Number
of Shares
  52,774  
   —  
  13,229  
   —  
   —  
313  
   —  
   2,115  

Common
Stock
  52,774  
—  

  13,229  
—  
—  
313  
—  
2,115  

  Surplus

37,777  
—  

—  
—  
—  
3,761  
1,192  
87,867  

Accumulated 
Other 
Income (Loss)     Treasury
Comprehensive 
Stock 
12,842   
(165,616 )
—   
—  
—   
—   
—   
—   
—   
—   

—  
—  
(974 )
—  
—  
—  

Retained
Earnings  
639,606  
119,032  

(13,229)
(39,767)
—  
—  
—  
—  

Total
577,383  
119,032  

—  
(39,767)
(974)
4,074  
1,192  
89,982  

  68,431  
   —  
  17,172  
   —  
   —  
456  
   —  

   —  
  86,059  
   —  
   —  
   —  
   —  
165  
   —  

  68,431  
—  

130,597  
—  

705,642  
140,779  

  17,172  
—  
—  
456  
—  

—  
—  
—  
4,785  
237  

(17,172)
(40,833)
—  
—  
—  

—  
  86,059  
—  

—  
135,619  
—  

—  
788,416  
117,001  

—  
—  
—  
165  

—  

—  
—  
—  
1,754  

—  
(44,166)
—  
—  

874  

—  

2,168   
15,010   
—   
—   
—   
—   
—   
—   

(56,978 ) 
(41,968 ) 
—   
—   
—   
—   
—   
—   

(166,590 )
—  

—  
—  
(8,669 )
—  
—  

2,168  
753,090  
140,779  

—  
(40,833)
(8,669)
5,241  
237  

—  
(175,259 )
—  

(56,978)
792,867  
117,001  

—  
—  
(28,017 )
—  

—  
(44,166)
(28,017)
1,919  

—  

874  

   —  
  86,224  

—  
 $ 86,224

—  
  $ 138,247

—  
$ 861,251

1,578   
 $ (40,390 ) 

1,578  
—  
   $ (203,276) $ 842,056

See accompanying notes to consolidated financial statements. 

36 

  
 
  
 
 
 
 
  
  
 
 
 
  
  
 
 
 
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
    
  
 
 
 
 
  
 
 
 
  
  
 
 
 
 
  
  
 
 
 
 
  
  
  
 
 
 
 
  
 
 
 
 
  
  
 
 
 
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
    
  
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
 
  
  
 
 
 
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
    
  
 
 
 
 
  
 
 
 
  
  
 
 
 
 
  
  
 
 
 
 
  
  
  
 
 
 
 
  
 
 
 
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
    
  
 
 
 
 
  
 
 
 
 
  
  
 
 
 
  
  
 
 
 
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
    
  
 
 
 
 
  
 
 
 
 
  
  
 
 
 
 
  
  
 
 
 
 
  
  
  
 
 
 
 
  
  
 
 
 
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
    
  
 
 
 
 
  
 
 
 
 
  
  
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Consolidated Statements of Cash Flows 

Years ended December 31, 2006, 2005 and 2004 

(Dollars in Thousands) 

Operating activities: 
Net income: 
Adjustments to reconcile net income to net cash provided by 

operating activities: 
Provision for possible loan losses 
Amortization of loan premiums 
Accretion of time deposit discounts 
Depreciation of bank premises and equipment
Loss (gain) on sale of bank premises and equipment
Depreciation and amortization of leased assets
Accretion of investment securities discounts
Amortization of investment securities premiums
Investment securities transactions, net
Accretion of junior subordinated debenture discounts
Amortization of identified intangible assets
Stock based compensation expense 
Earnings from affiliates and other investments
Deferred tax (benefit) expense 
(Increase) decrease in accrued interest receivable
Decrease in other assets 
Net increase (decrease) in other liabilities

Net cash provided by operating activities

Investing activities: 

Proceeds from maturities of securities
Proceeds from sales of available for sale securities
Purchases of available for sale securities
Principal collected on mortgage backed securities
Principal collected on other securities 
Proceeds from matured time deposits with banks
Purchases of time deposits with banks
Net (increase) decrease in loans 
Purchases of other investments 
Distributions from other investments 
Purchases of bank premises and equipment
Proceeds from sales of bank premises and equipment
Cash paid in purchase transaction 
Cash acquired in purchase transaction
Net cash used in investing activities

2006

2005 

2004

$

117,001

 $

140,779 

  $  119,032  

3,849  
1,190  
—  
28,251  
2,096  
2,169
(416)
4,097  
930  
548  
4,866  
874  
(12,204)
(15,686)
(8,641)
9,423  
13,561  
151,908

960   
2,813   
(5,391 ) 
25,538   
(2,244 ) 
1,967   
(572 ) 
24,042   
181   
996   
5,176   
—   
(15,495 ) 
22,752   
(7,507 ) 
5,598   
11,349   
210,942   

5,196  
451  
(3,600)
18,975  
(3,230)
1,687
(611)
29,215  
(8,884)
1,026  
3,681  
—  
(11,993)
11,353  
(3,983)
20,341  
(20,558)
158,098

7,720
60,447  
(1,159,306)
864,611  
568  
—  
—  
(427,416)
(15,294)
16,264  
(85,363)
16,679  
—  
—  
(721,090)

4,366   
189,902   
(1,616,504 ) 
918,819   
—   
—   
—   
255,954   
(25,053 ) 
9,451   
(76,162 ) 
3,112   
—   
—   
(336,115 ) 

29,558
875,816  
(2,223,915)
791,425  
—  
87,400  
(296)
51,692
(5,161)
53,227  
(51,866)
4,648  
(276,555)
66,009  
(598,018)

See accompanying notes to consolidated financial statements. 

37 

  
 
 
  
 
 
  
 
 
 
 
    
 
 
 
 
 
 
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Consolidated Statements of Cash Flows (Continued) 

Years ended December 31, 2006, 2005 and 2004 

(Dollars in Thousands) 

Financing activities: 

Net increase in non-interest bearing demand deposits
Net increase (decrease) in savings and interest bearing 

demand deposits 

Net increase (decrease) in time deposits
Net (decrease) increase in securities sold under repurchase 

agreements 

Other borrowed funds, net 
Principal payments on senior notes 
Principal payments of long-term debt 
Proceeds from issuance of long-term debt
Purchase of treasury stock 
Proceeds from stock transactions 
Payments of cash dividends 
Payments of cash dividends in lieu of fractional shares

Net cash provided by financing activities
Increase (decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year 
Supplemental cash flow information: 

Interest paid 
Income taxes paid 
Adjustment to goodwill arising from acquisition

2006

114,096

48,217  
171,179  

(54,427)
225,501  
—
(101,290)
75,259  
(28,017)
1,919  
(44,166)
—
408,271
(160, 911)
458,118  
297,207

312,018
67,421
7,016  

$

$

$

 $

2005 

188,381   

(75,868 ) 
(21,800 ) 

140,956   
199,876   
—   
—   
—   
(8,669 ) 
5,478   
(40,808 ) 
(25 ) 
387,521   
262,348   
195,770   
458,118 

2004

103,547

70,306  
27,961  

74,372  
200,545  
(21,295)
—  
—  
(974)
5,266  
(39,729)
(38)
419,961
(19,959)
215,729  
  $  195,770

  $ 

197,023 
39,040   
—   

93,337  
36,277
—  

See accompanying notes to consolidated financial statements. 

38 

  
  
 
  
 
 
  
 
 
 
 
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Notes to Consolidated Financial Statements 

(1)  Summary of Significant Accounting Policies  

The accounting and reporting policies of International Bancshares Corporation (“Corporation”) and Subsidiaries (the Corporation 
and Subsidiaries collectively referred to herein as the “Company”) conform to  accounting principles generally accepted in the United 
States of America and to general practices within the banking industry. The following is a description of the more significant of those 
policies. 

Consolidation and Basis of Presentation 

The consolidated financial statements include the accounts of the Corporation and its wholly-owned bank subsidiaries, 

International Bank of Commerce, Laredo (“IBC”), Commerce Bank, International Bank of Commerce, Zapata, International Bank of 
Commerce, Brownsville, and the Corporation’s wholly-owned non-bank subsidiaries, IBC Subsidiary Corporation, IBC Life 
Insurance Company, IBC Trading Company and IBC Capital Corporation. All significant inter-company balances and transactions 
have been eliminated in consolidation. 

The Company, through its subsidiaries, is primarily engaged in the business of banking, including the acceptance of checking and 

savings deposits and the making of commercial, real estate, personal, home improvement, automobile and other installment and term 
loans. The primary markets of the Company are South, Central, and Southeast Texas and the state of Oklahoma. Each bank subsidiary 
is very active in facilitating international trade along the United States border with Mexico and elsewhere. Although the Company’s 
loan portfolio is diversified, the ability of the Company’s debtors to honor their contracts is primarily dependent upon the economic 
conditions in the Company’s trade area. In addition, the investment portfolio is directly impacted by fluctuations in market interest 
rates. The Company and its bank subsidiaries are subject to the regulations of certain Federal agencies as well as the Texas 
Department of Banking and undergo periodic examinations by those regulatory authorities. Such agencies may require certain 
standards or impose certain limitations based on their judgments or changes in law and regulations. 

The preparation of the consolidated financial statements in conformity with accounting policies generally accepted in the United 
States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as 
of the dates of the statement of condition and income and expenses for the periods. Actual results could differ significantly from those 
estimates. Material estimates that are particularly susceptible to significant changes in the near-term relate to the determination of the 
allowance for possible loan losses. 

Per Share Data 

All share and per share information has been restated giving retroactive effect to stock dividends distributed. 

Investment Securities 

The Company classifies debt and equity securities into one of these categories: held-to-maturity, available-for-sale, or trading.  

Such classifications are reassessed for appropriate classification at each reporting date.  Securities that are intended and expected to be 
held until maturity are classified as “held-to-maturity” and are carried at amortized cost for financial statement reporting.  Securities 
that are not positively expected to be held until maturity, but are intended to be held for an indefinite period of time 

39 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Notes to Consolidated Financial Statements (Continued) 

(1)  Summary of Significant Accounting Policies (Continued)  

are classified as “available-for-sale” or “trading” and are carried at their fair value.  Unrealized holding gains and losses are included 
in net income for those securities classified as “trading”, while unrealized holding gains and losses related to those securities classified 
as “available-for-sale” are excluded from net income and reported net of tax as other comprehensive income and in shareholders’ 
equity as accumulated other comprehensive income until realized.  The Company did not maintain any trading securities during the 
three year period ended December 31, 2006. 

Mortgage-backed securities held at December 31, 2006 and 2005 represent participating interests in pools of long-term first 
mortgage loans originated and serviced by the issuers of the securities. Premiums and discounts are amortized using the level yield or 
“interest method.”  Mortgage-backed securities are either issued or guaranteed by the U.S. Government or its agencies. Market interest 
rate fluctuations can affect the prepayment speed of principal and the yield on the security. 

Unearned Discounts 

Consumer loans are frequently made on a discount basis. The amount of the discount is subsequently included in interest income 

ratably over the term of the related loans to approximate the effective interest method. 

Provision and Allowance for Possible Loan Losses 

The allowance for possible loan losses is maintained at a level considered adequate by management to provide for probable loan 

losses. The allowance is increased by provisions charged to operating expense and reduced by net charge-offs. The provision for 
possible loan losses is the amount, which, in the judgment of management, is necessary to establish the allowance for probable loan 
losses at a level that is adequate to absorb known and inherent risks in the loan portfolio. 

Management believes that the allowance for possible loan losses is adequate. While management uses available information to 
recognize losses on loans, future additions to the allowance may be necessary based on changes in economic conditions. In addition, 
various regulatory agencies, as an integral part of their examination process, periodically review the Company’s bank subsidiaries’ 
allowances for possible loan losses. Such agencies may require the Company’s bank subsidiaries to make additions or reductions to 
their GAAP allowances based on their judgments of information available to them at the time of their examination. 

Loans 

Loans are reported at the principal balance outstanding, net of unearned discounts. Interest income on loans is reported on an 

accrual basis. Loan fees and costs associated with originating the loans are amortized over the life of the loan using the interest 
method. 

Non-Accrual Loans 

The non-accrual loan policy of the Company’s bank subsidiaries is to discontinue the accrual of interest on loans when 

management determines that it is probable that future interest accruals will be un-collectible. Interest income on non-accrual loans is 
recognized only to the extent payments are received or when, in management’s opinion, the debtor’s financial condition warrants 
reestablishment of interest accruals. 

40 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Notes to Consolidated Financial Statements (Continued) 

(1)  Summary of Significant Accounting Policies (Continued) 
Other Real Estate Owned 

Other real estate owned is comprised of real estate acquired by foreclosure and deeds in lieu of foreclosure. Other real estate is 
carried at the lower of the recorded investment in the property or its fair value less estimated costs to sell such property (as determined 
by independent appraisal). Prior to foreclosure, the value of the underlying loan is written down to the fair value of the real estate to be 
acquired by a charge to the allowance for loan possible losses, if necessary. Any subsequent write-downs are charged against other 
non-interest expense. Operating expenses of such properties and gains and losses on their disposition are included in other non-interest 
expense. 

Bank Premises and Equipment 

Bank premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed on straight-line and 

accelerated methods over the estimated useful lives of the assets. Repairs and maintenance are charged to operations as incurred and 
expenditures for renewals and betterments are capitalized. 

Income Taxes 

Deferred income tax assets and liabilities are determined using the asset and liability method. Under this method, the net deferred 

tax asset or liability is determined based on the tax effects of the differences between the book and tax basis of the various balance 
sheet assets and liabilities and gives current recognition to changes in tax rates and laws. The Company files a consolidated federal 
income tax return with its subsidiaries. 

Recognition of deferred tax assets is based on management’s belief that the benefit related to certain temporary differences, tax 

operating loss carryforwards, and tax credits are more likely than not to be realized. A valuation allowance is recorded for the amount 
of the deferred tax items for which it is more likely than not that the tax benefits will not be realized. 

Stock Options 

Through December 31, 2005, the Company accounted for stock-based employee compensation plans based on the intrinsic value 
method provided in Accounting Principles Board Opinion No. 25 “Accounting for Stock Issued to Employees,” (“APB No. 25”), and 
related interpretations. Because the exercise price of the Company’s employee stock options equals the market price of the underlying 
stock on the measurement date, which is generally the date of grant, no compensation expense was recognized on options granted. 
Compensation expense for stock awards is based on the market price of the stock on the measurement date, which is generally the date 
of grant, and is recognized ratably over the service period of the award. 

Statement of Financial Accounting Standards No. 123 (“SFAS No. 123”), “Accounting for Stock-Based Compensation,” as 
amended by Statement of Financial Accounting Standards No. 148 (“SFAS No. 148”), “Accounting for Stock-Based Compensation—
Transition and Disclosure, an amendment of FASB Statement No. 123,” requires pro forma disclosures of net income and earnings per 
share for companies not adopting its fair value accounting method for stock-based employee compensation. The pro forma disclosures 
presented in Note 16 in the accompanying Notes to Consolidated Financial Statements  

41 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Notes to Consolidated Financial Statements (Continued) 

(1)  Summary of Significant Accounting Policies (Continued) 
included elsewhere in this report use the fair value method of SFAS No. 123 to measure compensation expense for stock-based 
employee compensation plans. The fair value of stock options granted was estimated as the measurement date, which is generally the 
date of grant, using the Black-Sholes-Merton option-pricing model. This model was developed for use in estimating the fair value of 
publicly traded options that have no vesting restrictions and are fully transferable. Additionally, the model requires the input of highly 
subjective assumptions. Because the Company’s employee stock options have characteristics significantly different from those of 
publicly traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in 
management’s opinion, the Black-Sholes-Merton option-pricing model does not necessarily provide a reliable single measure of the 
fair value of the Company’s stock options. 

In December 2004, the Financial Accounting Standards Board (“FASB”) issued Statement of Financial Accounting Standards 

No. 123R (“SFAS No. 123R”), “Share-Based Payment (Revised 2004).”  Among other things, SFAS No. 123R eliminates the ability 
to account for stock-based compensation using APB No. 25 and requires that such transactions be recognized as compensation cost in 
the income statement based on their fair values on the date of the grant. SFAS No. 123R was adopted by the Company on January 1, 
2006. 

Net Income Per Share 

Basic Earnings Per Share (“EPS”) is calculated by dividing net income by the weighted average number of common shares 

outstanding. The computation of diluted EPS assumes the issuance of common shares for all dilutive potential common shares 
outstanding during the reporting period. The dilutive effect of stock options is considered in earnings per share calculations, if dilutive, 
using the treasury stock method. 

Goodwill and Identified Intangible Assets 

Goodwill represents the excess of costs over fair value of assets of businesses acquired. Prior to 2002, goodwill was amortized 

over its estimated useful life using the straight-line method or an accelerated basis (as appropriate) over periods generally not 
exceeding 25 years. On January 1, 2002, in accordance with a new accounting standard, the Company stopped amortizing goodwill 
and adopted a new policy for measuring goodwill for impairment. Under the new policy, goodwill is assigned to reporting units. 
Goodwill is then tested for impairment at least annually or on an interim basis if an event occurs or circumstances change that would 
more likely than not reduce the fair value of the reporting unit below its carrying value. 

Identified intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of 

contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a 
related contract, asset, or liability. The Company’s identified intangible assets relate to core deposits. Identified intangible assets with 
definite useful lives are amortized on an accelerated basis over their estimated life. Identified intangible assets, premises and 
equipment and other long lived assets are tested for impairment whenever events or changes in circumstances indicate the carrying 
amount of the assets may not be recoverable from future undiscounted cash flow. If impaired, the assets are recorded at fair value. See 
Note 7—Goodwill and Other Intangible Assets. 

42 

 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(1)  Summary of Significant Accounting Policies (Continued) 
Impairment of Long-Lived Assets 

Long-lived assets, such as property, plant and equipment, and purchased intangibles subject to amortization, are reviewed for 

impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. 
Recoverability of assets to be held and used is measured by a comparison of the carrying value of the asset to the estimated 
undiscounted future cash flows expected to be generated by the asset. If the carrying value of an asset exceeds its estimated future 
cash flows, an impairment charge is recognized by the amount by which the carrying value of the asset exceeds the fair value of the 
asset. Assets to be disposed of would be separately presented in the statement of condition and reported at the lower of the carrying 
value or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for 
sale would be presented separately in the appropriate asset and liability sections of the statement of condition. 

Consolidated Statements of Cash Flows 

For purposes of the consolidated statements of cash flows, the Company considers all short-term investments with a maturity at 

date of purchase of three months or less to be cash equivalents. Also, the Company reports transactions related to deposits loans to 
customers on a net basis. 

Accounting for Transfers and Servicing of Financial Assets 

The Company accounts for transfers and servicing of financial assets and extinguishments of liabilities based on the application 
of a financial-components approach that focuses on control. After a transfer of financial assets, the Company recognizes the financial 
and servicing assets it controls and liabilities it has incurred, derecognizes financial assets when control has been surrendered and 
derecognizes liabilities when extinguished. The Company has retained mortgage servicing rights in connection with the sale of 
mortgage loans. The value of the mortgage servicing rights are reviewed periodically for impairment and are amortized in proportion 
to and over the period of estimated net servicing income or net servicing losses. 

Segments of an Enterprise and Related Information 

The Company operates as one segment. The operating information used by the Company’s chief executive officer for purposes of 

assessing performance and making operating decisions about the Company is the consolidated financial statements presented in this 
report. The Company has four active operating subsidiaries, namely, the bank subsidiaries, otherwise known as International Bank of 
Commerce, Laredo, Commerce Bank, International Bank of Commerce, Zapata and International Bank of Commerce, Brownsville. 
The Company applies the provisions of SFAS No. 131, “Disclosures about Segments of an Enterprise and Related Information,” in 
determining its reportable segments and related disclosures. None of the Company’s other subsidiaries meets the 10% threshold for 
disclosure under SFAS No. 131. 

Derivative Instruments 

The Company currently does not directly engage in hedging activities and does not directly hold any derivative instruments or 

embedded derivatives. 

43 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(1)  Summary of Significant Accounting Policies (Continued) 
Guarantor’s Accounting and Disclosure Requirements for Guarantees 

In November 2002, the FASB issued FASB Interpretation No. 45 (“FIN 45”), “Guarantor’s Accounting and Disclosure 

Requirements for Guarantees, Including Indirect Guarantees of Indebtedness of Others, an interpretation of FASB Statements No. 5, 
57 and 107 and rescission of FASB Interpretation No. 34.”  FIN 45 elaborates on the disclosures to be made by a guarantor in its 
interim and annual financial statements about its obligations under certain guarantees that it has issued. This Interpretation also 
incorporates, without change, the guidance in Financial Accounting Standards Board Interpretation No. 34 (“FIN 34”), “Disclosure of 
Indirect Guarantees of Indebtedness of Others,” which has been superceded. FIN 45 also clarifies that a guarantor is required to 
recognize, at the inception of a guarantee, a liability for the obligations it has undertaken in issuing the guarantee, including its 
ongoing obligations to stand ready to perform over the term of the guarantee in the event that the specified triggering events or 
conditions occur. The initial recognition and initial measurement provisions of FIN 45 were applicable on a prospective basis to 
guarantees issued or modified after December 31, 2002, irrespective of the guarantor’s fiscal year-end. The disclosure requirements 
were effective for financial statements of interim or annual periods ending after December 15, 2002, and are included in the notes to 
the Company’s consolidated financial statements. The adoption of FIN 45 did not have a significant impact on the Company’s 
consolidated financial statements. 

Reclassifications 

Certain amounts in the prior year’s presentations have been reclassified to conform to the current presentation. These 

reclassifications had no effect on previously reported net income. 

New Accounting Standards 

In May 2005, The Financial Accounting Standards Board issued Statement of Financial Accounting Standards No. 154, (“SFAS 
No. 154”), “Accounting Changes and Error Corrections, a Replacement of APB Opinion No. 20 and FASB Statement No. 3.”  SFAS 
No. 154 establishes, unless impracticable, retrospective application as the required method for reporting a change in accounting 
principle in the absence of explicit transitional requirements specific to a newly adopted accounting principle. Previously, most 
changes in accounting principle were recognized by reporting a cumulative change in accounting principle to the net income of the 
period of the change. Under SFAS No. 154, retrospective application requires that (i) the cumulative effect of the change to the new 
accounting principle on periods prior to those presented be reflected in the carrying amounts of asset and liabilities as of the beginning 
of the first period presented, (ii) an offsetting adjustment, if any, be made to the opening balance of retained earnings or other 
appropriate components of equity for that period, and (iii) financial statements for each prior period presented be adjusted to reflect 
the direct period specific effects of applying the new accounting principle. Special retroactive application rules apply in certain 
situations where it is impracticable to determine either the period specific effects or the cumulative effect of the change. Indirect 
effects of a change in accounting principle are required to be reported in the period in which the accounting change is made. SFAS 
No. 154 carries forward the guidance in APB Opinion No. 20 “Accounting Changes,” requiring justification of a change in accounting 
principle on the basis of preferability. SFAS No. 154 also carries forward, without change, the guidance in APB Opinion 20, for 
reporting the correction of an error in previously issued financial statements and for a change in accounting estimate. SFAS No. 154 is 
effective for accounting changes and corrections of errors made in fiscal years beginning after December 15, 2005.  

44 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(1)  Summary of Significant Accounting Policies (Continued) 
The adoption of this new accounting standard did not have an impact on the Company’s consolidated financial statements. 

In November 2005, the Financial Accounting Standards Board issued FASB Staff Position No 115-1 (“FSP 115-1”), “The 
Meaning of Other-Than-Temporary Impairment and Its Application to Certain Investments.”  FSP 115-1 provides guidance for 
determining when an investment is considered impaired, whether impairment is other-than-temporary, and measurement of an 
impairment loss. An investment is considered impaired if the fair value of the investment is less than its cost. If, after consideration of 
all available evidence to evaluate the realizable value of its investment, impairment is determined to be other-thank-temporary, then an 
impairment loss should be recognized equal to the difference between the investments’ cost and its fair value. FSB 115-1 nullifies 
certain provision of Emerging Issues Task Force (“EITF”) Issue No 01-1, “The Meaning of Other-Than-Temporary Impairment and 
Its Application to Certain Investments,” while retaining the disclosure requirements of EITF 01-1 which were adopted in 2003. FSP 
115-1 is effective for reporting periods beginning after December 15, 2005. The company adopted FSP 115-1 on January 1, 2006. The 
adoption did not have a significant impact on the consolidated financial statements. 

In December 2004, the Financial Accounting Standards Board issued Statement of Financial Accounting Standards No. 123R, 

(“SFAS No. 123R”), “Share-Based Payment, an Amendment of Statements No. 123 and 95.”  The revision to the existing SFAS 
No. 123 eliminates the ability of public companies to account for stock-based compensation using Accounting Principles Board 
Opinion No. 25 (“APB 25”), “Accounting for Stock Issues to Employees” and requires such transactions be recognized as 
compensation expense in the Company’s consolidated financial statements based on the fair value of the options issued as of their 
grant date. SFAS No. 123R was to be effective for the Company for interim and reporting periods after December 31, 2005. The 
Company adopted the provisions of SFAS No. 123R on January 1, 2006. “Details related to the adoption of SFAS No. 123R and the 
impact to the Consolidated Financial Statements are discussed in Note 1b—Stock Options.” 

In February 2006, the Financial Accounting Standards Board issued Statement of Financial Accounting Standards No. 155, 
(“SFAS No. 155”), “Accounting for Certain Hybrid Financial Instruments—an amendment of FASB Statements No. 133 and 140.” 
SFAS No. 155 amends SFAS No. 133, “Accounting for Derivative Instruments and Hedging Activities,” and SFAS No. 140, 
“Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities.”  SFAS No. 155 permits fair value 
measurements for any hybrid financial instrument that contains an embedded derivative and that otherwise would require bifurcation, 
clarifies which interest-only strips and principal-only strips are not subject to the requirements of SFAS No. 133,  establishes a 
requirement to evaluate interests in securitized financial assets to identify interests that are freestanding derivatives or that are hybrid 
financial instruments that contain an embedded derivative requiring bifurcation, clarifies that concentrations of credit risk in the form 
of subordination are not embedded derivatives, and amends SFAS No. 140 to eliminate the prohibition on a qualifying special purpose 
entity from holding a derivative financial nstrument that pertains to a beneficial interest other than another derivative financial interest. 
SFAS No. 155 is effective for all financial instruments acquired, issued, or subject to a re-measurement event occurring after the 
beginning of an entity’s first fiscal year that begins after September 15, 2006. The adoption of this new standard at January 1, 2007 did 
not have an impact on the Company’s financial statements. 

45 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(1)  Summary of Significant Accounting Policies (Continued) 

In March 2006, the Financial Accounting Standards Board issued Statement of Financial Accounting Standards No. 156, (“SFAS 

No. 156”), “Accounting for Servicing of Financial Assets—an amendment of FASB Statement No. 140.”  SFAS No. 156 amends 
SFAS No. 140, “Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities—a replacement of 
FASB Statement No. 125,” by requiring, in certain situations, an entity to recognize a servicing asset or servicing liability each time it 
undertakes an obligation to service a financial asset by entering into a servicing contract. All separately recognized servicing assets 
and servicing liabilities are required to be initially measured at fair value. Subsequent measurement methods include the amortization 
method, whereby servicing assets or servicing liabilities are amortized in proportion to an over the period of estimated net servicing 
income or net servicing loss or the fair value method, whereby servicing assets or servicing liabilities are measured at fair value at 
each reporting date and changes in fair value are reported in earnings in the period in which they occur. If the amortization method is 
used, an entity must assess servicing assets or servicing liabilities for impairment or increased obligation based on the fair value at 
each reporting date. SFAS No. 156 is effective as of the beginning of an entity’s first fiscal year that begins after September 15, 2006. 
The adoption of this new standard at January 1, 2007 did not have a significant impact on the Company’s consolidated financial 
statements. 

In September 2006, the Financial Accounting Standards Board issued Statement of Financial Accounting Standards No. 157 
(“SFAS No. 157”), “Fair Value Measurements.”  SFAS No. 157 defines fair value, establishes a framework for measuring fair value 
in generally accepted accounting principles, and expands disclosures about fair value measurements. SFAS No. 157 is effective for 
fiscal years beginning after November 15, 2007. The Company does not anticipate a significant impact to the financial statements 
upon the adoption of this new standard. 

In December 2006, the Financial Accounting Standards Board issued Statement of Financial Accounting Standards No. 158 

(“SFAS No. 158”), “Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans, an amendment of FASB 
Statements No. 87, 88, 106 and 132(R).”  SFAS No 158 requires an employer to recognize the over-funded or under-funded status of 
defined benefit post-retirement benefit plans as an asset or liability in its financial statements. The funded status is measured as the 
difference between plan assets at fair value and the benefit obligation (the projected benefit obligation for pension plans or the 
accumulated benefit obligation for other post-retirement benefit plans). An employer is also required to measure the funded status of a 
plan as of the date of its year-end financial statements with changes in the funded status recognized through comprehensive income. 
SFAS No. 158 also requires certain disclosures regarding the effects on net periodic benefit cost for the next fiscal year that arise from 
delayed recognition of gains or losses, prior service costs or credits, and the transition asset or obligation. Publicly traded companies 
are to apply the disclosure requirements of SFAS No. 158 for fiscal years ending after December 15, 2006, with full adoption for 
fiscal years ending after December 15, 2008. The adoption of this new standard is not expected to have an impact on the Company’s 
financial statements. 

46 

 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(1)  Summary of Significant Accounting Policies (Continued) 

In June 2006, the Financial Accounting Standards Board issued FASB Interpretation No. 48 (“FIN 48”), “ Accounting for 

Uncertainty in Income Taxes, an interpretation of FASB Statement 109.”  FIN 48 prescribes a recognition threshold and a 
measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax 
return. Benefits from tax positions should be recognized in the financial statements only when it is more likely than not that the tax 
position will be sustained upon examination by the appropriate taxing authority that would have full knowledge of all relevant 
information. A tax position that meets the more likely than not recognition threshold is measured at the largest amount of benefit that 
is greater than fifty percent likely of being realized upon ultimate settlement. Tax positions that previously failed to meet the more 
likely than not recognition threshold should be recognized in the first subsequent financial reporting period in which that threshold is 
met. Previously recognized tax positions that no longer meet the more likely than not recognition threshold should be derecognized in 
the first subsequent financial reporting period in which that threshold is no longer met. FIN 48 also provides guidance on the 
accounting for and disclosure of unrecognized tax benefits, interest and penalties. FIN 48 is effective for fiscal years beginning after 
December 15, 2006. The adoption of this new standard is not expected to have an impact on the Company’s financial statements. 

In September 2006, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 108 (“SAB No. 108”), 
“Considering the Effects of a Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements.”  SAB 
No.108 addresses how the effects of prior year uncorrected errors must be considered in quantifying misstatements in the current year 
financial statements. The effects of prior year uncorrected errors include the potential accumulation of improper amounts that may 
result in a material misstatement on the balance sheet or the reversal of prior period errors in the current period that result in a material 
misstatement of the current period income statement amounts. Adjustments to current or prior period financial statements would be 
required in the event that after application of various approaches for assessing materiality of misstatement in current period financial 
statements and consideration of all relevant quantitative and qualitative factors, a misstatement is determined to be material. SAB 
No. 108 is effective for fiscal years ending after November 15, 2006. 

(2) Potential and Completed Acquisitions 

On December 1, 2006, the Company signed a definitive agreement pursuant to which the Company will acquire Southwest First 

Community, Inc. (“Southwest Community”), a bank holding company with approximately $129 million in assets that owns State 
Bank & Trust in Beeville, Texas and Commercial State Bank in Sinton, Texas. The transaction is expected to close in the spring of 
2007 and is subject to various closing conditions, including receipt of all requisite regulatory approvals. The Board of Directors of 
both the Company and Southwest Community and the shareholders of Southwest Community have approved the transaction. 

On June 18, 2004, the Company acquired Local Financial Corporation (“LFIN”), an Oklahoma based bank holding company 
with approximately $3.0 billion in assets. The acquisition was effected pursuant to the Agreement and Plan of Merger dated as of 
January 22, 2004 (the “Merger Agreement”). The Company paid consideration totaling approximately $276.6 million in cash and 2.11 
million shares of Company common stock. The aggregate purchase price was $367.4 million. Under the terms of the Merger 
Agreement, LFIN shareholders were entitled to elect to receive either cash or Company common stock in  

47 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(2) Potential and Completed Acquisitions (Continued) 

the merger, subject to the requirement that 75% of LFIN’s shares be exchanged for cash and 25% be exchanged for Company 
common stock. Based on the elections of LFIN shareholders and the terms of the Merger Agreement, LFIN shares held by LFIN 
shareholders who elected to receive shares of Company common stock in the Merger and LFIN shareholders who did not timely make 
a cash/stock election were exchanged entirely for shares of Company common stock. As to those LFIN shares for which an election to 
receive cash was timely made, each such share was exchanged for approximately $20.59 in cash and 0.033 shares of Company 
common stock. The exchange rate for those LFIN shareholders receiving Company common stock in the Merger was 0.5170 shares of 
Company common stock for each share of LFIN. 

The following table summarizes the estimated fair value of the assets acquired and liabilities assumed at the date of the 

acquisition, in thousands. 

Assets 

Cash and cash equivalents 
Time deposits with banks 
Investment securities 
Net loans 
Bank premises and equipment
Accrued interest receivable 
Other investments 
Identified intangible asset 
Goodwill 
Other assets 

Total assets acquired 

Liabilities 

Demand deposits 
Savings deposits 
Time deposits 
Securities sold under repurchase agreements
Other borrowed funds 
Senior notes 
Other liabilities 

Total liabilities assumed 
Net assets acquired 

48 

As of 
June 18, 2004   
(Dollars in 
thousands) 

  $ 

66,009   
87,400     
331,656   
   2,152,912     
50,155     
8,266     
93,538     
42,188     
221,814     
30,230     
   3,084,168     

232,982     
766,178   
938,031     
44,138     
624,382     
21,295     
89,764   
   2,716,770     
  $  367,398 

  
 
 
 
  
 
  
 
 
  
      
 
 
 
  
  
 
 
  
 
  
 
  
 
  
 
  
 
  
 
 
  
      
 
  
  
 
  
 
  
 
  
 
  
  
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(2) Potential and Completed Acquisitions (Continued) 

The following table reflects the pro forma results of operations for the year ended December 31, 2004 as though the acquisition 

had been completed as of January 1, 2004 (dollars in thousands, except per share data): 

Interest income 
Interest expense 
Net interest income 
Provision for possible loan losses
Non-interest income 
Non-interest expense 
Income before income taxes 
Income taxes 
Net income 
Per common share: 

Basic 
Diluted 

Year Ended 
December 31, 2004   
  $ 417,945 
   136,886   
   281,059   
   18,000   
   150,917   
   267,923   
   146,053   
   47,962   
  $  98,091 

  $ 
  $ 

1.58 
1.55 

Included in the non-interest expense of the combined operations for the year ended December 31, 2004 are certain costs 

associated with contractual obligations related to the closing of the transaction. 

(3) Investment Securities 

The amortized cost and estimated fair value by type of investment security at December 31, 2006 are as follows: 

Other securities 
Total investment securities 

Amortized
cost

 $ 2,375  
$ 2,375

Gross
unrealized
gains

Held to Maturity 
Gross
unrealized 
losses
(Dollars in Thousands) 

 $ —  
$ —

 $ —     
$ —

   Estimated 
fair value 
  $ 2,375      
  $ 2,375 

Carrying
value

 $ 2,375  
$ 2,375

U.S. Treasury securities 
Mortgage-backed securities 
Obligations of states and political 

subdivisions 
Other securities 
Equity securities 
Total investment securities 

Amortized
cost

$

1,268
4,440,265  

92,878  
4,630
13,825
$ 4,552,866

49 

Gross
unrealized
gains

 $ —  
  1,025  

Available for Sale
Gross
unrealized
losses
(Dollars in Thousands) 
—   $ 

$

(65,006 )

Estimated 
fair value 

1,268 
4,376,284   

  3,019  
—
804
$ 4,848

—  
(2,551 )
—

95,897   
2,079   
14,629   
$ (67,557) $ 4,490,157 

   Carrying
value

  $

1,268  
4,376,284  

95,897  
2,079
14,629
  $ 4,490,157

  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
    
 
 
 
 
 
 
 
  
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
  
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(3) Investment Securities (Continued) 

The amortized cost and estimated fair value of investment securities at December 31, 2006, by contractual maturity, are shown 

below. Expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations with or 
without prepayment penalties. 

Held to Maturity

Available for Sale

Due in one year or less 
Due after one year through five years 
Due after five years through ten years 
Due after ten years 
Mortgage-backed securities
Equity securities 
Total investment securities 

Amortized
Cost

$
75
  2,300  
—  
—  
—  
—  
$ 2,375

Estimated
fair value

Amortized 
Cost 
(Dollars in Thousands) 
$ 
$
75
  2,300  
—  
—  
—  
—  
$ 2,375

1,268 
—   
8,199   
89,309   
4,440,265   
13,825   
$ 4,552,866 

   Estimated
fair value

  $

1,268
—  
8,304  
89,672  
4,376,284  
14,629  
  $ 4,490,157

The amortized cost and estimated fair value by type of investment security at December 31, 2005 are as follows: 

Other securities 
Total investment securities 

Amortized
cost

 $ 2,375  
$ 2,375

Gross
unrealized
gains

Held to Maturity 
Gross
unrealized 
losses
(Dollars in Thousands) 

 $ —  
$ —

 $ —     
$ —

   Estimated 
fair value 
  $ 2,375      
  $ 2,375 

Carrying
value

 $ 2,375  
$ 2,375

U.S. Treasury securities 
Mortgage-backed securities 
Obligations of states and political 

subdivisions 
Other securities 
Equity securities 
Total investment securities 

Amortized
cost

$

1,283
4,214,461  

96,750
5,198  
13,825  
$ 4,331,517

Gross
unrealized
gains

 $ —  
913  

Available for Sale
Gross
unrealized
losses
(Dollars in Thousands) 
—   $ 

$

(66,515 )

Estimated 
fair value 

1,283 
4,148,859   

2,833
—  
978  
$ 4,724

(26 )
(2,599 )
(149 )

99,557   
2,599   
14,654   
$ (69,289) $ 4,266,952 

   Carrying
value

  $

1,283  
4,148,859  

99,557
2,599  
14,654  
  $ 4,266,952

Mortgage-backed securities are primarily securities issued by the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 

the Federal National Mortgage Association (“Fannie Mae”) and the Government National Mortgage Association (“Ginnie Mae”). 

The amortized cost and fair value of available for sale investment securities pledged to qualify for fiduciary powers, to secure 

public monies as required by law, repurchase agreements and short-term fixed borrowings was $3,088,095,000 and $3,043,558,000, 
respectively, at December 31, 2006. 

50 

  
  
  
 
  
 
 
 
  
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
    
    
  
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(3) Investment Securities (Continued) 

Proceeds from the sale of securities available-for-sale were $60,447,000, $189,902,000 and $875,816,000 during 2006, 2005 and 
2004, respectively. Gross gains of $412,000, $1,402,000 and $12,818,000 and gross losses of $1,342,000, $1,583,000 and $3,934,000 
were realized on the sales in 2006, 2005 and 2004, respectively. 

Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category 
and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2006 were as follows:

Available for sale: 

U.S. Treasury securities 
Mortgage-backed securities 
Obligations of states and political 

subdivisions 
Other securities 

   Less than 12 months
   Fair Value  

Unrealized
Losses

12 months or more

  Fair Value

Unrealized 
Losses
(Dollars in Thousands)

Total

   Fair Value     Unrealized 

Losses

   $ 

—  

812,870  

 $ —  
(4,511)  

  $

—  

 $

3,137,292  

—  
(60,495 )  

  $ 

—       $

—  
   (65,006 )  

3,950,162   

—  
—  
   $ 812,870

—  
—  

—  
2,079  
$ (4,511) $ 3,139,371

—  
(2,551 )

—   
2,079   
$ (63,046) $ 3,952,241 

—  
(2,551 )
     $ (67,557)

The unrealized losses on investments in mortgage-backed securities are caused by changes in market interest rates. The 

contractual cash obligations of the securities are guaranteed by Freddie Mac, Fannie Mae, and Ginnie Mae. The decrease in fair value 
is due to market interest rates and not other factors, and because the Company has the ability and intent to hold these investments until 
a market price recovery or maturity of the securities, it is the conclusion of the Company that the investments are not considered other-
than-temporarily impaired. 

The unrealized losses on investments in other securities are caused by fluctuations in market interest rates. The underlying cash 

obligations of the securities are guaranteed by the entity underwriting the debt instrument. It is the belief of the Company that the 
entity issuing the debt will honor its interest payment schedule, as well as the full debt at maturity. The securities are purchased by the 
Company for their economic value. The decrease in fair value is primarily due to market interest rates and not other factors, and 
because the Company has the ability and intent to hold these investments until a market price recovery or maturity of the securities, it 
is the conclusion of the Company that the investments are not considered other-than-temporarily impaired. 

51 

  
 
 
  
 
  
 
  
 
 
  
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
    
  
 
 
 
 
  
 
 
  
 
 
 
 
  
 
  
 
 
 
 
  
 
  
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(4)  Loans 

A summary of net loans, by loan type at December 31, 2006 and 2005 is as follows: 

Commercial, financial and agricultural 
Real estate-mortgage 
Real estate—construction 
Consumer 
Foreign 

Total loans 
Unearned discount 

Loans, net of unearned discount 

December 31,

2006 
2005
(Dollars in thousands)

$ 2,337,573 
785,401   
1,404,186   
198,580   
309,144   
5,034,884   
(74 ) 
$ 5,034,810 

  $ 2,376,276  
847,512
901,518  
218,607  
281,947
4,625,860  
(168)
  $ 4,625,692

(5)  Allowance for Possible Loan Losses 

A summary of the transactions in the allowance for possible loan losses for the years ended December 31, 2006, 2005 and 2004 

is as follows: 

Balance at January 1, 

Losses charged to allowance 
Recoveries credited to allowance 
Net losses charged to allowance 
Provision charged to operations 
Acquired in purchase transactions 

Balance at December 31, 

2004

2006

2005 
(Dollars in Thousands)
  $ 81,351 
(6,571 ) 
2,056   
(4,515 ) 
960   
—   
  $ 77,796 

$ 77,796 
(18,388 ) 
1,280   
(17,108 ) 
3,849   
—   
$ 64,537 

 $ 46,396  
(9,513 )
5,407  
(4,106 )
5,196  
33,865  
$ 81,351

Loans accounted for on a non-accrual basis at December 31, 2006, 2005 and 2004 amounted to $17,788,000, $30,075,000 and 
$30,773,000, respectively. The effect of such non-accrual loans reduced interest income by $1,868,000, $2,329,000 and $1,203,000 
for the years ended December 31, 2006, 2005 and 2004, respectively. Amounts received on non-accruals are applied, for financial 
accounting purposes, first to principal and then to interest after all principal has been collected. 

The decrease in non-accrual loans from 2005 to 2006 can be attributed to the charge-off of loans acquired as part of the LFIN 

acquisition. 

Impaired loans are those loans where it is probable that all amounts due according to contractual terms of the loan agreement will 

not be collected. The Company has identified these loans through its normal loan review procedures.   Impaired loans are measured 
based on (1) the present value of expected future cash flows discounted at the loan’s effective interest rate; (2) the loan’s observable 
market price; or (3) the fair value of the collateral if the loan is collateral dependent. Substantially all of the Company’s impaired loans 
are measured at the fair value of the collateral. In limited cases the Company may use other methods to determine the level of 
impairment of a loan if such loan is not collateral dependent. 

52 

  
  
 
 
  
 
 
  
 
  
 
  
 
 
 
 
 
 
 
 
  
 
  
  
 
  
 
 
 
 
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(5)  Allowance for Possible Loan Losses (Continued) 

The following table details key information regarding the Company’s impaired loans: 

Balance of impaired loans where there is a related allowance for loan loss
Balance of impaired loans where there is no related allowance for loan loss

Total impaired loans 
Allowance allocated to impaired loans 

2004

2006 

2005 
(Dollars in Thousands)
  $ 22,909    $ 34,796  $ 37,037  
—   
—  
  $ 34,796 $ 37,037
$ 22,909 
  $ 7,171    $ 20,014  $ 15,666  

—  

The impaired loans included in the table above were primarily comprised of collateral dependent commercial loans, which have 

not been fully charged off. The average recorded investment in impaired loans was $25,684,000, $29,909,000, and $34,226,000 for 
the years ended December 31, 2006, 2005 and 2004, respectively. 

Management of the Company recognizes the risks associated with these impaired loans. However, management’s decision to 

place loans in this category does not necessarily mean that losses will occur. 

The bank subsidiaries charge off that portion of any loan which management considers to represent a loss as well as that portion 

of any other loan which is classified as a “loss” by bank examiners. Commercial and industrial or real estate loans are generally 
considered by management to represent a loss, in whole or part, when an exposure beyond any collateral coverage is apparent and 
when no further collection of the loss portion is anticipated based on the borrower’s financial condition and general economic 
conditions in the borrower’s industry. Generally, unsecured consumer loans are charged-off when 90 days past due. 

While management of the Company considers that it is generally able to identify borrowers with financial problems reasonably 

early and to monitor credit extended to such borrowers carefully, there is no precise method of predicting loan losses. The 
determination that a loan is likely to be un-collectible and that it should be wholly or partially charged-off as a loss is an exercise of 
judgment. Similarly, the determination of the adequacy of the allowance for possible loan losses can be made only on a subjective 
basis. It is the judgment of the Company’s management that the allowance for possible loan losses at December 31, 2006 was 
adequate to absorb probable losses from loans in the portfolio at that date. 

(6)  Bank Premises and Equipment 

A summary of bank premises and equipment, by asset classification, at December 31, 2006 and 2005 were as follows: 

Bank buildings and improvements 
Furniture, equipment and vehicles 
Land 
Real estate held for future expansion: 

Land, building, furniture, fixture and equipment

Less: accumulated depreciation 

Bank premises and equipment, net 

Estimated 
useful lives

5 - 40 years  
1 - 20 years

7 - 27 years  

53 

2006 
2005
(Dollars in Thousands)

$  288,664 
204,163   
82,191   

  $ 261,787  
185,465
65,632  

868   
(185,563 ) 
$  390,323 

919  
(161,817)
  $ 351,986

  
  
 
 
  
 
  
 
 
  
 
 
 
  
 
 
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(7)  Goodwill and Other Intangible Assets 

The Company’s identified intangibles are all in the form of amortizable core deposit premium. In 2004, the Company acquired 

$42,188,000 in identified intangibles in the form of core deposit premium in the LFIN acquisition, which will be amortized over a ten 
year period. Information on the Company’s identified intangible assets follows: 

December 31, 2006: 

Core deposit premium 

December 31, 2005: 

Core deposit premium 

Carrying
Amount

   Accumulated 
Amortization 
(Dollars in Thousands)

Net

$ 56,338

     $ 21,980 

     $ 34,358

$ 56,338

     $ 17,114 

     $ 39,224

Amortization expense of intangible assets for the years ended December 31, 2006, 2005 and 2004, was $4,866,000, $5,176,000 

and $3,681,000, respectively. Estimated amortization expense for each of the five succeeding fiscal years, and thereafter, is as follows:
Fiscal year ending: 

2007 
2008 
2009 
2010 
2011 
Thereafter 

Total 

Total 
   (in thousands)   
  $  4,837 
   4,837   
   4,837   
   4,837   
   4,794   
   10,216   
  $ 34,358 

Changes in the carrying amount of goodwill for the year ended December 31, 2006 were as illustrated in the table below. 

There were no changes in the carrying amount of goodwill for the year ended December 31, 2005. 

Balance at December 31, 2005 

Adjustment to goodwill related to acquisition (Note 17)

Balance as of December 31, 2006 

   $ 289,262  
(7,016)
   $ 282,246

54 

  
  
 
  
 
 
 
  
 
 
  
       
 
 
  
       
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(8)  Deposits 

Deposits as of December 31, 2006 and 2005 and related interest expense for the years ended December 31, 2006, 2005 and 2004 

were as follows: 

Deposits: 

Demand—non-interest bearing 

Total demand non-interest bearing 
Savings and interest bearing demand 

Domestic 
Foreign 

Domestic 
Foreign 

Total savings and interest bearing demand 
Time, certificates of deposit 

$100,000 or more 

Less than $100,000 

Domestic 
Foreign 

Domestic 
Foreign 

Total time, certificates of deposit 
Total deposits 

Interest expense: 

Savings and interest bearing demand 

Domestic 
Foreign 

Total savings and interest bearing demand
Time, certificates of deposit 

$100,000 or more 

Less than $100,000 

Domestic 
Foreign 

Domestic 
Foreign 

Total time, certificates of deposit 

Total interest expense on deposits 

2006 
2005
(Dollars in Thousands)

$ 1,332,525 
120,951   
1,453,476   

  $ 1,222,888  
116,492
1,339,380

1,838,229   
366,222   
2,204,451   

1,839,829  
316,405
2,156,234

846,185   
1,200,412   

814,267  
1,091,284  

892,656   
392,738   
3,331,991   
$ 6,989,918 

889,016  
366,245  
3,160,812  
  $ 6,656,426

2006

2005 
(Dollars in Thousands)

2004

$ 36,606 
3,838   
40,444   

  $  24,583 
2,353   
26,936   

 $ 11,991  
1,806
13,797  

32,851   
44,143   

18,705   
26,710   

10,483  
17,327  

33,225   
12,858   
123,077   
$ 163,521 

20,399   
7,420   
73,234   
  $ 100,170 

12,396  
4,453  
44,659  
$ 58,456

55 

  
  
 
 
  
 
  
 
  
 
 
    
 
    
 
 
 
 
    
 
 
 
 
    
 
 
 
    
 
 
 
 
    
 
 
 
 
 
  
 
  
 
 
  
 
 
    
    
 
    
    
 
 
 
 
 
    
    
 
 
 
    
    
 
 
 
 
    
    
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(8)  Deposits (Continued) 

Scheduled maturities of time deposits in amounts of $100,000 or more at December 31, 2006, were as follows: 

Due within 3 months or less 
Due after 3 months and within 6 months
Due after 6 months and within 12 months
Due after 12 months 

   $  876,841  
506,135  
477,336  
186,285  
   $ 2,046,597

(9)  Securities Sold Under Repurchase Agreements 

The Company’s bank subsidiaries have entered into repurchase agreements with an investment banking firm and individual 

customers of the bank subsidiaries. The purchasers have agreed to resell to the bank subsidiaries identical securities upon the 
maturities of the agreements. Securities sold under repurchase agreements were mortgage-backed book entry securities and averaged 
$670,063,000 and $746,389,000 during 2006 and 2005, respectively, and the maximum amount outstanding at any month end during 
2006 and 2005 was $794,617,000 and $856,681,000, respectively. 

Further information related to repurchase agreements at December 31, 2006 and 2005 is set forth in the following table: 

Collateral Securities

Repurchase Borrowing

December 31, 2006 term: 
Overnight agreements 
1 to 29 days 
30 to 90 days 
Over 90 days 
Total 

December 31, 2005 term: 
Overnight agreements 
1 to 29 days 
30 to 90 days 
Over 90 days 
Total 

Book Value of
Securities Sold

 $ 318,681  
39,274
119,200  
558,993  
$ 1,036,148

$ 150,055
12,461  
45,516  
765,644
$ 973,676

Fair Value of
Securities Sold  

Balance of  
Liability 

(Dollars in Thousands) 

 $ 314,225  
39,048
118,346  
553,223  
$ 1,024,842

$ 147,175
12,296  
44,884  
756,145
$ 960,500

 $ 180,139      
27,181      
60,863      
  438,152      
$ 706,335 

$ 128,886      
3,931      
33,851      
594,094      
$ 760,762 

Weighted
Average Interest
Rate

  4.00%  
  4.53
  4.69  
  4.92  
  4.65%

  2.79%
  3.85  
  3.20  
  4.24
  3.95%

The book value and fair value of securities sold includes the entire book value and fair value of securities partially or fully 

pledged under repurchase agreements. 

(10) Other Borrowed Funds 

Other borrowed funds include Federal Home Loan Bank borrowings, which are short and long-term fixed borrowings issued by 

the Federal Home Loan Bank of Dallas at the market price offered at the time  

56 

  
  
 
 
  
  
  
  
 
  
 
 
 
  
 
 
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
       
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
 
 
 
 
       
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(10) Other Borrowed Funds (Continued) 
of funding. These borrowings are secured by mortgage-backed investment securities and a portion of the Company’s loan portfolio. 

Further information regarding the Company’s other borrowed funds at December 31, 2006 and 2005 is set forth in the following 

table: 

December 31

2006 
2005
(Dollars in Thousands)

Federal Home Loan Bank advances—short-term

Balance at year end 
Rate on balance outstanding at year end 
Average daily balance 
Average rate 
Maximum amount outstanding at any month end

Federal Home Loan Bank advances—long-term

Balance at year end 
Rate on balance outstanding at year end 
Average daily balance 
Average rate 
Maximum amount outstanding at any month end

$ 2,095,505 

  $ 1,870,000

5.29 % 

5.07 % 

$ 2,040,618 

  $ 1,863,096

$ 2,247,025 

  $ 2,035,119

4.25%

3.21%

$

$

$

71 
5.15 % 
73 
5.15 % 
75 

  $ 

  $ 

  $ 

75
5.15%
77
5.15%
79

(11) Junior Subordinated Deferrable Interest Debentures 

The Company has formed ten statutory business trusts under the laws of the State of Delaware, for the purpose of issuing trust 

preferred securities. As part of the LFIN acquisition, the Company acquired three additional statutory business trusts previously 
formed by LFIN for the purpose of issuing trust preferred securities. The ten statutory business trusts formed by the Company and the 
three business trusts acquired in the LFIN transaction (the “Trusts”) have each issued Capital and Common Securities and invested the 
proceeds thereof in an equivalent amount of junior subordinated debentures (the “Debentures”) issued by the Company or LFIN, as 
appropriate. The Company has succeeded to the obligations of LFIN under the LFIN Debentures, which have an outstanding principal 
balance of $20,620,000. The Debentures will mature on various dates; however the Debentures may be redeemed at specified 
prepayment prices, in whole or in part after the optional redemption dates specified in the respective indentures or in whole upon the 
occurrence of any one of certain legal, regulatory or tax events specified in respective indentures. As of December 31, 2006, the 
principal amount of debentures outstanding totaled $210,908,000. 

On July 25, 2006, pursuant to the Indenture dated as of July 16, 2001, between the Company and The Bank of New York, as 

Trustee, the Company redeemed all of its Floating Rate Junior Subordinated Debt Securities (the “Debt Securities”), issued to 
International Bancshares Capital Trust II (“Trust II”) at a redemption price equal to approximately $27,998,000, which includes 
accrued interest to, but not including, the redemption date. 

In accordance with the Amended and Restated Declaration of Trust dated as of July 16, 2001 between the Company and The 

Bank of New York as Institutional Trustee, the proceeds from the redemption of  

57 

  
 
 
  
 
 
  
 
  
 
  
 
 
 
    
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(11) Junior Subordinated Deferrable Interest Debentures (Continued) 

the Debt Securities were used to simultaneously redeem an equal amount of Trust II Floating Capital Securities and the Trust II 
Floating Rate Common Securities issued by Trust II. 

On September 30, 2006, pursuant to the Indenture dated as of September 20, 2001, between Local Financial Corporation and The 

Bank of New York, as Trustee, the Company redeemed all of its Fixed Rate Junior Subordinated Debt Securities (the “Debt 
Securities”), issued to Local Financial Capital Trust I (“LFIN Trust I”) at a redemption price equal to approximately $41,155,625, 
which includes accrued interest to, but not including, the redemption date. 

In accordance with the Amended and Restated Declaration of Trust dated as of September 20, 2001 between Local Financial 
Capital Corporation and The Bank of New York as Institutional Trustee, the proceeds from the redemption of the Debt Securities were 
used to simultaneously redeem an equal amount of LFIN Trust I Fixed Rate Capital Securities and the LFIN Trust I Fixed Rate 
Common Securities issued by LFIN Trust I. 

On December 8, 2006, pursuant to the Indenture dated as of November 28, 2001, between the Company and Wilmington Trust 

company, as Trustee, the Company redeemed all of its Floating Rate Junior Subordinated Debt Securities (the “Debt Securities”) 
issued to International Bancshares Capital Trust III (“Trust III”) at a redemption price equal to approximately $34,538,000, which 
includes accrued interest to, but not including, the redemption date. 

In accordance with the Amended and Restated Declaration of Trust dated as of November 28, 2001, between the Company and 

Wilmington Trust Company, as the Institutional Trustee and Delaware Trustee and the Administrators named therein, the proceeds 
from the redemption of the Debt Securities were used to simultaneously redeem an equal amount of Trust III floating rate Capital 
Securities and the Trust III floating rate Common Securities issued by Trust III. 

On June 9, 2006, the Company formed International Bancshares Corporation Capital Trust IX (“Trust IX”), its ninth statutory 

business trust formed under the laws of the State of Delaware, for the purpose of issuing trust preferred securities. On July 27, 2006, 
Trust IX issued $40,000,000 of Capital Securities. The Capital Securities accrue interest for the first five years at a fixed rate of 
7.10%, and subsequently at a floating rate of 1.62% over the London Interbank Offered Rate (“LIBOR”), and interest is payable 
quarterly beginning October 1, 2006. The Trust IX Capital Securities will mature on October 1, 2036; however, the Capital Securities 
may be redeemed at specified prepayment prices (a) in whole or in part on any interest payment date on or after October 1, 2011, or 
(b) in whole or in part within 90 days upon the occurrence of certain legal, regulatory, or tax events. The Capital Securities are 
subordinated and junior in right of payment to all present and future senior indebtedness of the Company. The Company has fully and 
unconditionally guaranteed the obligation of Trust IX with respect to the Capital Securities. The Company has the right, unless an 
Event of Default has occurred and is continuing, to defer payment of interest on the Capital Securities for up to twenty consecutive 
quarterly periods. The redemption prior to maturity of any of the Capital Securities may require the prior approval of the Federal 
Reserve and/or other regulatory agencies. 

On November 8, 2006, the Company formed International Bancshares Corporation Capital Trust X (“Trust X”), its tenth 

statutory business trust formed under the laws of the State of Delaware, for the purpose of issuing trust preferred securities. On 
November 15, 2006, Trust X issued $33,000,000 of Capital Securities. The Capital Securities accrue interest for the first five years at a 
fixed rate of 6.66% and  

58 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(11) Junior Subordinated Deferrable Interest Debentures (Continued) 

subsequently at a floating rate of 1.65% over the three month LIBOR, and interest is payable quarterly beginning February 1, 2007. 
The Trust X Capital Securities will mature on February 1, 2037; however, the Capital Securities may be redeemed at specified 
prepayment prices (a) in whole or in part on any interest payment date on or after February 1, 2012, or (b) in whole or in part within 
90 days upon the occurrence of certain legal, regulatory, or tax events. The Capital Securities are subordinated and junior in right of 
payment to all present and future senior indebtedness of the Company. The Company has fully and unconditionally guaranteed the 
obligation of Trust X with respect to the Capital Securities. The Company has the right, unless an Event of Default has occurred and is 
continuing, to defer payment of interest on the Capital Securities for up to twenty consecutive quarterly periods. The redemption prior 
to maturity of any of the Capital Securities may require the prior approval of the Federal Reserve and/or other regulatory agencies. 

The Debentures are subordinated and junior in right of payment to all present and future senior indebtedness (as defined in the 
respective indentures) of the Company, and are pari passu with one another. The interest rate payable on, and the payment terms of 
the Debentures are the same as the distribution rate and payment terms of the respective issues of Capital and Common Securities 
issued by the Trusts. The Company has fully and unconditionally guaranteed the obligations of each of the Trusts with respect to the 
Capital and Common Securities. The Company has the right, unless an Event of Default (as defined in the Indentures) has occurred 
and is continuing, to defer payment of interest on the Debentures for up to ten consecutive semi-annual periods on Trusts I, IV and 
LFIN Trust II and for up to twenty consecutive quarterly periods on Trusts V, VI, VII, VIII, IX and X and LFIN Trust III. If interest 
payments on any of the Debentures are deferred, distributions on both the Capital and Common Securities related to that Debenture 
would also be deferred. The redemption prior to maturity of any of the Debentures may require the prior approval of the Federal 
Reserve and/or other regulatory bodies. 

For financial reporting purposes, the Trusts are treated as investments of the Company and not consolidated in the consolidated 

financial statements. Although the Capital Securities issued by each of the Trusts are not included as a component of shareholders’ 
equity on the consolidated statement of condition, the Capital Securities are treated as capital for regulatory purposes. Specifically, 
under applicable regulatory guidelines, the Capital Securities issued by the Trusts qualify as Tier 1 capital up to a maximum of 25% of 
Tier 1 capital on an aggregate basis. Any amount that exceeds the 25% threshold would qualify as Tier 2 capital. For December 31, 
2006, the total $210,908,000 of the Capital Securities outstanding qualified as Tier 1 capital. 

In March 2005, the Federal Reserve Board issued a final rule that would continue to allow the inclusion of trust preferred 
securities in Tier 1 capital, but with stricter quantitative limits. Under the final rule, after a transition period ending March 31, 2009, 
the aggregate amount of trust preferred securities and certain other capital elements would be limited to 25% of Tier 1 capital 
elements, net of goodwill, less any associated deferred tax liability. The amount of trust preferred securities and certain other elements 
in excess of the limit could be included in Tier 2 capital, subject to restrictions. Bank holding companies with significant international 
operations will be expected to limit trust preferred securities to 15% of Tier 1 capital elements, net of goodwill; however, they may 
include qualifying mandatory convertible preferred securities up to the 25% limit. The Company believes that substantially all of the 
current trust preferred securities will be included in Tier 1 capital after the five-year transition period ending March 31, 2009. 

59 

 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(11) Junior Subordinated Deferrable Interest Debentures (Continued) 

The following table illustrates key information about each of the Debentures and their interest rates at December 31, 2006: 

Fixed

Repricing
Frequency

Junior 
Subordinated 
Deferrable 
Interest 
Debentures 
  (in thousands)    
  $  10,252      
  $  22,681       Semi-Annually  
  $  20,558      
  $  25,662      
  $  10,310      
  $  25,566      
  $  41,238      
  $  34,021      
  $  10,310       Semi-Annually  
  $  10,310      
  $ 210,908 

Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly

Quarterly

Trust I 
Trust IV 
Trust V 
Trust VI 
Trust VII 
Trust VIII 
Trust IX 
Trust X 
LFIN Trust II 
LFIN Trust III 

Interest
Rate

Interest Rate
Index(1)

Maturity 
Date 

Optional
Redemption 
Date

10.18% Fixed
  9.09%   LIBOR + 3.70
9.02% LIBOR + 3.65
  8.82%   LIBOR + 3.45
  8.62%   LIBOR + 3.25
  8.42%   LIBOR + 3.05
  7.10%   Fixed
6.66% Fixed

   June 2011
   April 2007
   July 2007

June 2031 
  April 2032 
July 2032 
  November 2032     November 2007  
  April 2033 
  October 2033 
  October 2036 
February 2037 

   April 2008
   October 2008
   October 2011
   February 2012
   July 2007

  November 2032     November 2007  

  9.17%   LIBOR + 3.625   July 2032 
  8.82%   LIBOR + 3.45

(1)           Trust IX and Trust X accrue interest at a fixed rate for the first five years, then floating at LIBOR+1.62 and LIBOR+1.65 thereafter, 

respectively. 

(12) Earnings per Share (“EPS”) 

Basic EPS is calculated by dividing net income by the weighted average number of common shares outstanding. The 

computation of diluted EPS assumes the issuance of common shares for all dilutive potential common shares outstanding during the 
reporting period. The calculation of the basic EPS and the diluted EPS for the years ended December 31, 2006, 2005, and 2004 is set 
forth in the following table: 

December 31, 2006: 
Basic EPS 

Net income 
Potential dilutive common shares 

Diluted EPS 
December 31, 2005: 
Basic EPS 

Diluted EPS 
December 31, 2004: 
Basic EPS 

Net income 
Potential dilutive common shares 

Net income 
Potential dilutive common shares 

Diluted EPS 

Net
Income
(Numerator)
(Dollars in Thousands, Except Per Share Amounts)

Shares 
(Denominator) 

   Per Share  
Amount

 $ 117,001  
—  
 $ 117,001  

 $ 140,779  
—  
 $ 140,779

 $ 119,032  
—  
 $ 119,032

  63,133,522      
643,366      
  63,776,888      

  63,695,017      
790,150      
  64,485,167      

  62,134,149      
  1,246,407      
  63,380,556      

 $ 1.85  

 $ 1.83  

 $ 2.21  

 $ 2.18  

 $ 1.92  

 $ 1.88  

60 

  
 
 
  
  
  
 
 
 
  
 
  
  
 
 
 
 
 
 
  
 
 
  
  
 
  
  
 
  
 
 
  
 
 
  
 
 
  
  
 
  
 
  
  
    
  
 
 
 
 
 
 
 
 
     
 
  
 
 
  
  
 
 
  
 
 
  
 
 
  
 
  
 
 
 
 
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(13) Employees’ Profit Sharing Plan 

The Company has a deferred profit sharing plan for full-time employees with a minimum of one year of continuous employment. 

The Company’s annual contribution to the plan is based on a percentage, as determined by the Board of Directors, of income before 
income taxes, as defined, for the year. Allocation of the contribution among officers and employees’ accounts is based on length of 
service and amount of salary earned. Profit sharing costs of $4,685,000, $4,950,000 and $3,823,000 were charged to income for the 
years ended December 31, 2006, 2005, and 2004, respectively. 

(14) International Operations 

The Company provides international banking services for its customers through its bank subsidiaries. Neither the Company nor 

its bank subsidiaries have facilities located outside the United States. International operations are distinguished from domestic 
operations based upon the domicile of the customer. 

Because the resources employed by the Company are common to both international and domestic operations, it is not practical to 

determine net income generated exclusively from international activities. 

A summary of assets attributable to international operations at December 31, 2006 and 2005 are as follows: 

Loans: 

Commercial 
Others 

Less allowance for possible loan losses 

Net loans 

Accrued interest receivable 

2006 
(Dollars in Thousands)

2005

$ 246,352 
62,792   
309,144   
(7,612 ) 
$ 301,532 
$  2,655 

  $ 219,877  
62,070
281,947
(15,138)
  $ 266,809
1,672
  $

At December 31, 2006, the Company had $146,427,000 in outstanding standby and commercial letters of credit to facilitate trade 

activities. The letters of credit are issued primarily in conjunction with credit facilities, which are available to various Mexican banks 
doing business with the Company. 

Revenues directly attributable to international operations were $20,344,000, $14,003,000 and $11,077,000 for the years ended 

December 31, 2006, 2005 and 2004, respectively. 

61 

  
 
 
 
  
  
 
 
  
 
 
    
 
 
 
  
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(15) Income Taxes 

The Company files a consolidated U.S. Federal and State income tax return. The current and deferred portions of net income tax 

expense included in the consolidated statements of income are presented below for the years ended December 31: 

Current 
U.S. 
State 
Foreign 

Deferred 
U.S. 
State 

Total current taxes 

Total deferred taxes 
Total income taxes 

2006

2005 
(Dollars in Thousands)

2004

$ 70,701 
1,838   
36   
72,575   

(15,442 ) 
(244 ) 
(15,686 ) 
$ 56,889 

  $ 48,151 
452   
15   
48,618   

21,763   
989   
22,752   
  $ 71,370 

 $ 45,969  
523  
35
46,527  

11,353
—
11,353
$ 57,880

Total income tax expense differs from the amount computed by applying the U.S. Federal income tax rate of 35% for 2006, 2005 

and 2004 to income before income taxes. The reasons for the differences for the years ended December 31 are as follows: 

Computed expected tax expense 
Change in taxes resulting from: 
Tax-exempt interest income 
State tax, net of federal income taxes 
Other investment income 
Other 

Actual tax expense 

2006

2005 
(Dollars in Thousands)
  $ 74,252 

$ 60,876 

2004

 $ 61,919  

(1,681 ) 
1,037   
(3,724 ) 
381   
$ 56,889 

(1,800 ) 
1,267   
(2,965 ) 
616   
  $ 71,370 

(1,847 )
340  
(2,522 )
(10 )
$ 57,880

62 

  
  
 
 
  
 
  
 
 
  
 
 
    
    
 
 
 
 
    
    
 
 
  
 
  
  
 
  
 
 
 
    
    
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(15) Income Taxes (Continued) 

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities 

at December 31, 2006 and 2005 are reflected below: 

Deferred tax assets: 

Loans receivable, principally due to the allowance for possible loan losses
Net unrealized losses on available for sale investment securities
Other real estate owned 
Goodwill 
Accrued expenses 
State net operating loss carryforwards 
Other 
Total deferred tax assets

Deferred tax liabilities: 

Lease financing receivable 
Bank premises and equipment, principally due to differences on depreciation
FHLB stock 
Identified intangible assets 
Other 
Total deferred tax liabilities 
Net deferred tax liability 

2006 
(Dollars in Thousands)

2005

$  26,796 
22,320   
13   
3,132   
5,829   
1,275   
1,893   
61,258   

(8,328 ) 
(23,051 ) 
(5,975 ) 
(19,157 ) 
(4,536 ) 
(61,047 ) 
211 

$ 

  $ 26,865  
22,598  
152  
3,147  
1,255
1,633  
1,776  
57,426  

(26,320 )
(20,365 )
(4,520 )
(19,015 )
(2,422 )
(72,642 )
  $ (15,216)

The net deferred tax asset at $211,000 at December 31, 2006 is included in other assets in the consolidated statements of 

condition. The net deferred tax liability of $15,216,000 at December 31, 2005 is included in other liabilities in the consolidated 
statements of condition. 
(16) Stock Options 

On April 1, 2005, the Board of Directors adopted the 2005 International Bancshares Corporation Stock Option Plan (the “2005 

Plan”). The 2005 Plan replaced the 1996 International Bancshares Corporation Key Contributor Stock Option Plan (the “1996 Plan”). 
Under the 2005 Plan both qualified incentive stock options (“ISOs”) and nonqualified stock options (“NQSOs”) may be granted. 
Options granted may be exercisable for a period of up to 10 years from the date of grant, excluding ISOs granted to 10% shareholders, 
which may be exercisable for a period of up to only five years. As of December 31, 2006, 130,200 shares were available for future 
grants under the 2005 Plan. 

Through December 31, 2006 the Company has granted nonqualified stock options exercisable for a total of 140,382 shares, 
adjusted for stock dividends, of Common Stock to certain employees of the GulfStar Group. The grants were not made under either 
the 1996 Plan or the 2005 Plan. The options are exercisable for a period of seven years and vest in equal increments over a period of 
five years. All options granted to the GulfStar Group employees had an option price of not less than the fair market value of the 
Common Stock on the date of grant. 

63 

  
 
 
  
  
 
 
  
 
    
 
 
 
 
 
 
 
    
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(16) Stock Options (Continued) 

On January 1, 2006, the Company adopted the provisions of Statement of Financial Accounting Standards No. 123R (“SFAS 
No. 123R”), “Share-Based Payment, (Revised 2004).” SFAS No. 123R sets accounting requirements for “share-based” compensation 
to employees and non-employee directors, including employee stock purchase plans, and requires companies to recognize in the 
statement of operations the grant-date fair value of stock options and other equity-based compensation. 

The Company chose the modified-prospective transition alternative in adopting SFAS No. 123R. Under the modified-prospective 

transition method, compensation cost is recognized in financial statements issued subsequent to the date of adoption for all stock-
based payments granted, modified or settled after the date of adoption, as well as for any unvested awards that were granted prior to 
the date of adoption. 

The fair value of each option award is estimated on the date of grant using a Black-Sholes-Merton option valuation model that 
uses the assumptions noted in the following table. Expected volatility is based on the historical volatility of the price of the Company’s 
stock. The company uses historical data to estimate the expected dividend yield and employee termination rates within the valuation 
model. The expected term of options is derived from the “simplified” method as prescribed by SEC Staff Accounting Bulletin 
No. 107. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the 
time of grant. 

Expected Life (Years) 
Dividend yield 
Interest rate 
Volatility 

   2005 
5.99   

2006
6.13  
2.25%  2.50 % 
4.94%  4.36 % 
21.05%  24.00 % 

A summary of option activity under the stock option plans for the twelve months ended December 31, 2006 is as follows: 

Options outstanding at December 31, 2005 
Plus: Options granted 
Less: 

Options exercised 
Options expired 
Options forfeited 

Options outstanding at December 31, 2006 
Options fully vested and exercisable at 

December 31, 2006 

Weighted
average 
exercise 
price

Weighted 
average 
remaining 
contractual 
term (years)   

Aggregate
intrinsic 
value ($)

Number of 
options
1,626,155 $
23,750  

164,925  
—  
106,830
1,378,150

 $

16.55
29.70  

11.63  
—  
18.41
17.22  

1,029,299  

 $

13.45  

  3.02   

  1.84   

  $ 

  $

18,917,000  

18,017,000  

Stock-based compensation expense included in the consolidated statements of income for the twelve months ended December 31, 

2006 was approximately $874,000. As of December 31, 2006 there  

64 

  
  
 
 
 
 
  
 
 
 
 
  
 
 
 
 
    
  
 
 
 
 
    
  
 
 
 
 
 
 
 
 
 
 
    
  
 
 
 
 
 
 
    
  
 
 
 
 
 
 
    
  
 
 
    
  
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(16) Stock Options (Continued) 

was approximately $1,799,000 of total unrecognized stock-based compensation cost related to non-vested options granted under the 
Company plans that will be recognized over a weighted average period of 1.8 years. 

A summary of the status of the Company’s non-vested options as of December 31, 2006, and changes during the twelve months 

ended December 31, 2006, is presented below: 

Non-vested Options    
Non-vested options at December 31, 2005
Granted 
Vested 
Forfeited 
Non-vested options at December 31, 2006

  Options
549,131  
23,750
117,200  
106,830  
348,851

Weighted average grant-
date fair value ($) 
  $  7.52 
   7.08   
   11.11   
   8.54   
  $  7.37 

Other information pertaining to option activity during the twelve month period ending December 31, 2006 and December 31, 

2005 is as follows: 

Weighted average grant date fair value of stock 

options granted 

Total fair value of stock options vested
Total intrinsic value of stock options exercised

Twelve Months Ended 
December 31, 
2005 

2006

7.08 
$
$ 1,302,000 
$ 2,907,000 

  $ 
7.37  
  $ 1,515,186  
  $ 8,053,000

Awards granted prior to the Company’s adoption of SFAS No. 123R were accounted for under the recognition and measurement 
principles of APB Opinion 25, “Accounting for Stock Issued to Employees,” and related interpretations. Accordingly, no stock-based 
employee compensation cost is reflected in net income in the accompanying unaudited consolidated statements of income for the 
twelve months ended December 31, 2005 and 2004 because all options granted under the Company’s plans had exercise prices equal 
to the market value of the underlying common stock on the date of grant. 

65 

  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
  
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(16) Stock Options (Continued) 

Pro forma net income and net income per share, as if the Company had applied the fair value recognition provisions of SFAS 123 

to stock-based compensation for the period presented prior to the Company’s adoption of SFAS 123R is as follows: 

Net income, as reported 
Deduct: Total stock-based compensation expense determined under the fair value based method for 

  $ 

all awards, net of tax related tax effects 

Pro forma net income 
Earnings per share: 
Basic earnings 
As reported 
Pro forma 
Diluted earnings 
As reported 
Pro forma 

2005 

Twelve Months Ended
December 31,

2004
(Dollars in Thousands,
except per share data)
140,779 $

119,032

  $

  $

  $

(345)
140,434

$

(334)
118,698

2.21  $
2.20

2.18  $
2.18  

1.92  
1.91

1.88  
1.87  

(17) Commitments, Contingent Liabilities and Other Tax Matters 

The Company is involved in various legal proceedings that are in various stages of litigation. Some of these actions allege 
“lender liability” claims on a variety of theories and claim substantial actual and punitive damages. The Company has determined, 
based on discussions with its counsel that any material loss in such actions, individually or in the aggregate, is remote or the damages 
sought, even if fully recovered, would not be considered material to the consolidated financial position or results of operations of the 
Company. However, many of these matters are in various stages of proceedings and further developments could cause management to 
revise its assessment of these matters. 

The Company leases portions of its banking premises and equipment under operating leases. Total rental expense for the years 

ended December 31, 2006, 2005 and 2004 and non-cancellable lease commitments at December 31, 2006 were not significant. 

Cash of approximately $57,272,000 and $50,625,000 at December 31, 2006 and 2005, respectively, was maintained to satisfy 

regulatory reserve requirements. 

The Company’s lead bank subsidiary has invested in partnerships, which have entered into several lease-financing transactions. 

The lease-financing transactions in two of the partnerships have been examined by the Internal Revenue Service (“IRS”). In both 
partnerships, the lead bank subsidiary was the owner of a ninety-nine percent (99%) limited partnership interest. The IRS has issued 
separate Notice of Final Partnership Administrative Adjustments (“FPAA”) to the partnerships and on September 25, 2001, and 
January 10, 2003, the Company filed lawsuits contesting the adjustments asserted in the FPAAs. 

Prior to filing the lawsuits the Company was required to deposit the estimated tax due of approximately $4,083,000 with respect 

to the first FPAA and $7,710,606 with respect to the second  

66 

  
 
 
  
  
 
  
  
 
  
  
 
 
  
  
 
  
 
 
  
 
 
 
 
  
  
  
 
 
 
 
  
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(17) Commitments, Contingent Liabilities and Other Tax Matters (Continued) 

FPAA with the IRS pursuant to the Internal Revenue Code. If it is determined that the amount of tax due, if any, related to the lease-
financing transactions is less than the amount of the deposits, the remaining amount of the deposits would be returned to the 
Company. 

In order to curtail the accrual of additional interest related to the disputed tax benefits and because interest rates were 
unfavorable, on March 7, 2003, the Company submitted to the IRS a total of approximately $13.7 million, which constitutes the 
interest that would have accrued based on the adjustments proposed in the FPAAs related to both of the lease-financing transactions. If 
it is determined that the amount of interest due, if any, related to the lease-financing transactions is less than the approximate $13.7 
million, the remaining amount of the prepaid interest would be refunded to the Company, plus interest thereon. 

Beginning August 29, 2005, IBC proceeded to litigate one of the partnership tax cases in the Federal District Court in San 

Antonio, Texas. The case was tried over nine days beginning August 29, 2005. On March 31, 2006, the trial court rendered a judgment 
against the Company on the first FPAA. IBC timely filed its notice of appeal to the Fifth Circuit Court of Appeals. All appellate briefs 
have been filed and the parties are awaiting a decision on oral argument. The other partnership tax case has been stayed by the same 
Court during the pendency of the appeal. 

The Company, through December 31, 2005, had previously expensed approximately $12,000,000 in connection with the 

lawsuits. Because of the above-referenced trial court judgment against the Company on the first FPAA, the uncertainty of the outcome 
at the appellate level, and the similarity between the two FPAAs, the Company, as of December 31, 2006 has expensed an additional 
$13,700,000, approximately. The resultant approximately $25,700,000 expensed is the total of the tax adjustments due and the interest 
due on such adjustments for both FPAAs. Management intends to appeal the judgment in the first case and will continue to evaluate 
the merits of each lawsuit and make any appropriate revisions to the amounts, as deemed necessary. 

As part of the LFIN acquisition, two tax matters were transferred to the Company. The first relates to deductions taken on 
amended returns filed by LFIN during 2003 for the tax years ended June 30, 1999 through December 31, 2001. The refunds requested 
on the amended returns amounted to approximately $7,000,000. At December 31, 2003, LFIN had received approximately $2,000,000 
of the total refund requested. Because all the refunds are under review by the IRS, LFIN had established a reserve equal to the 
$2,000,000 received and did not recognize any benefit for the remaining $5,000,000. The second tax contingency reserve, of 
$7,000,000 was resolved with the IRS in September 2006 and as a result, the second tax contingency reserve is no longer required. 
The reserve was applied to the goodwill acquired as part of the LFIN acquisition. The Company will continue to monitor the IRS 
review of the remaining tax matter and any adjustments will be reflected in goodwill. 

(18) Transactions with Related Parties 

In the ordinary course of business, the subsidiaries of the Company make loans to directors and executive officers of the 
Corporation, including their affiliates, families and companies in which they are principal owners. In the opinion of management, 
these loans are made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for 
comparable transactions with other persons and do not involve more than normal risk of collectibility or present other  

67 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(18) Transactions with Related Parties (Continued) 

unfavorable features. The aggregate amounts receivable from such related parties amounted to approximately $48,731,000 and 
$42,605,000 at December 31, 2006 and 2005, respectively. 

(19) Financial Instruments with Off-Statement of Condition Risk and Concentrations of Credit Risk 

In the normal course of business, the bank subsidiaries are party to financial instruments with off-statement of condition risk to 

meet the financing needs of their customers. These financial instruments include commitments to their customers. These financial 
instruments involve, to varying degrees, elements of credit risk in excess of the amounts recognized in the consolidated statement of 
condition. The contract amounts of these instruments reflect the extent of involvement the bank subsidiaries have in particular classes 
of financial instruments. At December 31, 2006, the following financial amounts of instruments, whose contract amounts represent 
credit risks, were outstanding: 

Commitments to extend credit
Credit card lines 
Standby letters of credit
Commercial letters of credit

$ 1,860,382,000   
36,404,000   
124,113,000   
22,314,000   

The Company enters into a standby letter of credit to guarantee performance of a customer to a third party. These guarantees are 

primarily issued to support public and private borrowing arrangements. The credit risk involved is represented by the contractual 
amounts of those instruments. Under the standby letters of credit, the Company is required to make payments to the beneficiary of the 
letters of credit upon request by the beneficiary so long as all performance criteria have been met. At December 31, 2006, the 
maximum potential amount of future payments is $124,113,000. At December 31, 2006, the fair value of these guarantees is not 
significant. 

The Company enters into commercial letters of credit on behalf of its customers which authorize a third party to draw drafts on 

the Company up to a stipulated amount and with specific terms and conditions. A commercial letter of credit is a conditional 
commitment on the part of the Company to provide payment on drafts drawn in accordance with the terms of the commercial letter of 
credit. 

The bank subsidiaries’ exposure to credit loss in the event of nonperformance by the other party to the above financial 

instruments is represented by the contractual amounts of the instruments. The bank subsidiaries use the same credit policies in making 
commitments and conditional obligations as they do for on-statement of condition instruments. The bank subsidiaries control the 
credit risk of these transactions through credit approvals, limits and monitoring procedures. Commitments to extend credit are 
agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally 
have fixed expiration dates normally less than one year or other termination clauses and may require the payment of a fee. Since many 
of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent 
future cash requirements. The bank subsidiaries evaluate each customer’s credit-worthiness on a case-by-case basis. The amount of 
collateral obtained, if deemed necessary by the subsidiary banks upon extension of credit, is based on management’s credit evaluation 
of the customer. Collateral held varies, but may include residential and commercial real estate, bank certificates of deposit, accounts 
receivable and inventory. 

68 

  
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(19) Financial Instruments with Off-Statement of Condition Risk and Concentrations of Credit Risk (Continued) 

The bank subsidiaries make commercial, real estate and consumer loans to customers principally located in South, Central and 
Southeast Texas and the State of Oklahoma. Although the loan portfolio is diversified, a substantial portion of its debtors’ ability to 
honor their contracts is dependent upon the economic conditions in these areas, especially in the real estate and commercial business 
sectors. 

(20) Dividend Restrictions and Capital Requirements 

Bank regulatory agencies limit the amount of dividends, which the bank subsidiaries can pay the Corporation, through IBC 
Subsidiary Corporation, without obtaining prior approval from such agencies. At December 31, 2006, the subsidiary banks could pay 
dividends of up to $140,250,000 to the Company without prior regulatory approval and without adversely affecting their “well 
capitalized” status. In addition to legal requirements, regulatory authorities also consider the adequacy of the bank subsidiaries’ total 
capital in relation to their deposits and other factors. These capital adequacy considerations also limit amounts available for payment 
of dividends. The Company historically has not allowed any subsidiary bank to pay dividends in such a manner as to impair its capital 
adequacy. 

The Company and the bank subsidiaries are subject to various regulatory capital requirements administered by the federal 
banking agencies. 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 Company’s consolidated financial statements. 
Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital 
guidelines that involve quantitative measures of the Company’s assets, liabilities, and certain off-statement of condition items as 
calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative 
judgments by the regulators about components, risk weightings, and other factors. 

Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts 

and ratios (set forth in the table on the following page) of Total and Tier 1 capital to risk-weighted assets and of Tier 1 capital to 
average assets. Management believes, as of December 31, 2006, that the Company and each of the bank subsidiaries met all capital 
adequacy requirements to which it is subject. 

As of December 31, 2006, the most recent notification from the Federal Deposit Insurance Corporation categorized all the bank 
subsidiaries as well capitalized under the regulatory framework for prompt corrective action. To be categorized as “well capitalized” 
the Company and the bank subsidiaries must maintain minimum Total risk-based, Tier 1 risk based, and Tier 1 leverage ratios as set 
forth in the table. There are no conditions or events since that notification that management believes have changed the categorization 
of the Company or any of the bank subsidiaries as well capitalized. 

69 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(20) Dividend Restrictions and Capital Requirements (Continued) 

The Company’s and the bank subsidiaries’ actual capital amounts and ratios for 2006 are presented in the following table: 

As of December 31, 2006: 
Total Capital (to Risk Weighted Assets): 

Consolidated 
International Bank of Commerce, Laredo 
International Bank of Commerce, Brownsville
International Bank of Commerce, Zapata 
Commerce Bank 

Tier 1 Capital (to Risk Weighted Assets): 

Consolidated 
International Bank of Commerce, Laredo 
International Bank of Commerce, Brownsville
International Bank of Commerce, Zapata 
Commerce Bank 

Tier 1 Capital (to Average Assets): 

Consolidated 
International Bank of Commerce, Laredo 
International Bank of Commerce, Brownsville
International Bank of Commerce, Zapata 
Commerce Bank 

Actual

  Amount

  Ratio

For Capital
Adequacy Purposes 
  Ratio 
Amount
(greater 
(greater
than or 
than or 
equal to)    
equal to)
(Dollars in Thousands) 

To Be Well
Capitalized Under 
Prompt Corrective 
Action Provisions
   Amount     Ratio
(greater
than or 
equal to)

(greater 
than or 
equal to)    

  $ 845,827

13.61% $ 497,044   8.00 %     $ 621,305       10.00%  
  8.00   
  8.00   
  8.00   
  8.00   

544,990      10.00  
38,850      10.00  
13,711      10.00  
20,498      10.00  

435,992  
31,080  
10,968  
16,398  

639,892   11.74  
80,168   20.64  
37,345   27.24  
46,198   22.54  

  $ 775,705

578,414   10.61  
75,934   19.55  
35,847   26.15  
43,631   21.29  

  4.00   
  4.00   
  4.00   
  4.00   

217,996  
15,540  
5,484  
8,199  

12.49% $ 248,522   4.00 %     $ 372,783      
326,994     
23,310     
8,226     
12,299     
7.36% $ 421,784   4.00 %     $ 527,230      
440,605     
6.56  
41,160     
9.22  
18,857     
9.50  
25,975     
8.40  

352,484  
32,928  
15,086  
20,778  

  4.00   
  4.00   
  4.00   
  4.00   

6.00%  
6.00  
6.00  
6.00  
6.00  

5.00%  
5.00  
5.00  
5.00  
5.00  

  $ 775,705
578,414  
75,934  
35,847  
43,631  

70 

  
 
 
  
 
 
  
 
  
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
    
  
      
 
 
 
 
 
 
 
 
 
 
 
    
  
      
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
    
  
      
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
    
  
      
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(20) Dividend Restrictions and Capital Requirements (Continued) 

The Company’s and the bank subsidiaries’ actual capital amounts and ratios for 2005 are also presented in the following table: 

Actual

  Amount

  Ratio

For Capital
Adequacy Purposes 
  Ratio 
Amount
(greater 
(greater
than or 
than or 
equal to)    
equal to)
(Dollars in Thousands) 

To Be Well
Capitalized Under 
Prompt Corrective 
Action Provisions
   Amount     Ratio
(greater
than or 
equal to)

(greater 
than or 
equal to)    

  $ 814,021

14.22% $ 457,889   8.00 %     $ 572,361       10.00%  
  8.00   
  8.00   
  8.00   
  8.00   

503,267      10.00  
34,118      10.00  
12,683      10.00  
19,394      10.00  

402,614  
27,294  
10,146  
15,515  

628,370   12.49  
71,038   20.82  
33,584   26.48  
40,445   20.85  

  $ 742,345

565,312   11.23  
67,058   19.65  
32,367   25.52  
38,020   19.60  

  $ 742,345
565,312  
67,058  
32,367  
38,020  

  4.00   
  4.00   
  4.00   
  4.00   

201,307  
13,647  
5,073  
7,757  

12.97% $ 228,944   4.00 %     $ 343,417      
301,960     
20,471     
7,610     
11,636     
7.26% $ 408,952   4.00 %     $ 511,190      
431,648     
6.55  
37,028     
9.06  
17,566     
9.21  
23,373     
8.13  

345,319  
29,622  
14,053  
18,698  

  4.00   
  4.00   
  4.00   
  4.00   

6.00%  
6.00  
6.00  
6.00  
6.00  

5.00%  
5.00  
5.00  
5.00  
5.00  

As of December 31, 2005: 
Total Capital (to Risk Weighted Assets): 

Consolidated 
International Bank of Commerce, Laredo 
International Bank of Commerce, Brownsville
International Bank of Commerce, Zapata 
Commerce Bank 

Tier 1 Capital (to Risk Weighted Assets): 

Consolidated 
International Bank of Commerce, Laredo 
International Bank of Commerce, Brownsville
International Bank of Commerce, Zapata 
Commerce Bank 

Tier 1 Capital (to Average Assets): 

Consolidated 
International Bank of Commerce, Laredo 
International Bank of Commerce, Brownsville
International Bank of Commerce, Zapata 
Commerce Bank 

(21) Fair Value of Financial Instruments 

The fair value estimates, methods, and assumptions for the Company’s financial instruments at December 31, 2006 and 2005 are 

outlined below. 

Cash and Due From Banks and Federal Funds Sold 

For these short-term instruments, the carrying amount is a reasonable estimate of fair value. 

71 

  
 
 
  
 
 
  
 
  
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
    
  
      
 
 
 
 
 
 
 
 
 
 
 
    
  
      
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
    
  
      
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
    
  
      
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 
Notes to Consolidated Financial Statements (Continued) 

(21) Fair Value of Financial Instruments (Continued) 
Investment Securities 

For investment securities, which include U. S. Treasury securities, obligations of other U. S. government agencies, obligations of 

states and political subdivisions and mortgage pass through and related securities, fair values are based on quoted market prices or 
dealer quotes. Fair values are based on the value of one unit without regard to any premium or discount that may result from 
concentrations of ownership of a financial instrument, possible tax ramifications, or estimated transaction costs. See disclosures of fair 
value of investment securities in Note 3. 

Loans 

Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as 
commercial, real estate and consumer loans as outlined by regulatory reporting guidelines. Each category is segmented into fixed and 
variable interest rate terms and by performing and non-performing categories. 

For variable rate performing loans, the carrying amount approximates the fair value. For fixed rate performing loans, except 
residential mortgage loans, the fair value is calculated by discounting scheduled cash flows through the estimated maturity using 
estimated market discount rates that reflect the credit and interest rate risk inherent in the loan. For performing residential mortgage 
loans, fair value is estimated by discounting contractual cash flows adjusted for prepayment estimates using discount rates based on 
secondary market sources or the primary origination market. At December 31, 2006 and 2005, the carrying amount of fixed rate 
performing loans was $1,259,870,000 and $1,398,838,000 respectively, and the estimated fair value was $1,237,409,000 and 
$1,382,409,000, respectively. 

Fair value for significant impaired loans is based on recent external appraisals. If appraisals are not available, estimated cash 
flows are discounted using a rate commensurate with the risk associated with the estimated cash flows. Assumptions regarding credit 
risk, cash flows and discount rates are judgmentally determined using available market and specific borrower information. As of 
December 31, 2006 and 2005, the net carrying amount of impaired loans was a reasonable estimate of the fair value. 

Deposits 

The fair value of deposits with no stated maturity, such as non-interest bearing demand deposit accounts, savings accounts and 
interest bearing demand deposit accounts, was equal to the amount payable on demand as of December 31, 2006 and 2005. The fair 
value of time deposits is based on the discounted value of contractual cash flows. The discount rate is based on currently offered rates. 
At December 31, 2006 and 2005, the carrying amount of time deposits was $3,331,991,000 and $3,160,812,000, respectively, and the 
estimated fair value was $3,337,399,000 and $3,175,624,000, respectively. 

72 

 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Notes to Consolidated Financial Statements (Continued) 

(21) Fair Value of Financial Instruments (Continued) 
Securities Sold Under Repurchase Agreements and Other Borrowed Funds 

Due to the contractual terms of these financial instruments, the carrying amounts approximated fair value at December 31, 2006 

and 2005. 

Junior Subordinated Deferrable Interest Debentures 
Due to the contractual terms of these financial instruments, the carrying amounts approximated fair value at December 31, 2006. 

Commitments to Extend Credit and Letters of Credit 

Commitments to extend credit and fund letters of credit are principally at current interest rates and therefore the carrying amount 

approximates fair value. 

Limitations 

Fair value estimates are made at a point in time, based on relevant market information and information about the financial 
instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s 
entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Company’s financial 
instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk 
characteristics of various financial instruments and other factors. These estimates are subjective in nature and involve uncertainties 
and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly 
affect the estimates. 

Fair value estimates are based on existing on-and off-statement of condition financial instruments without attempting to estimate 

the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other 
significant assets and liabilities that are not considered financial assets or liabilities include the bank premises and equipment and core 
deposit value. In addition, the tax ramifications related to the effect of fair value estimates have not been considered in the above 
estimates. 

73 

 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Notes to Consolidated Financial Statements (Continued) 

(22) International Bancshares Corporation (Parent Company Only) Financial Information 

Statements of Condition 
(Parent Company Only) 

December 31, 2006 and 2005 
(Dollars in Thousands) 

ASSETS

Cash 
Repurchase Agreements 
Other investments 
Notes receivable 
Investment in subsidiaries 
Other assets 

Total assets 

LIABILITIES AND SHAREHOLDERS’ EQUITY

Liabilities: 

Junior subordinated deferrable interest debentures
Due to IBC Trading 
Other liabilities 

Total liabilities 
Shareholders’ equity: 
Common shares 
Surplus 
Retained earnings 
Accumulated other comprehensive loss 

Less cost of shares in treasury 
Total shareholders’ equity 
Total liabilities and shareholders’ equity

74 

2006 

2005

$ 

655 
6,303   
25,464   
1,636   
1,022,959   
1,938   
$ 1,058,955 

  $ 

1,562  
2,600  
21,937  
2,536
1,003,878  
1,277  
  $ 1,033,790

$  210,908 
21   
5,970   
216,899   

  $  236,391
21  
4,511  
240,923  

86,224   
138,247   
861,251   
(40,390 ) 
1,045,332   
(203,276 ) 
842,056   
$ 1,058,955 

86,059  
135,619  
788,416  
(41,968)
968,126  
(175,259)
792,867
  $ 1,033,790

  
 
 
  
 
  
 
 
    
 
 
 
 
 
 
 
  
    
 
    
 
 
 
    
 
 
 
 
 
    
 
 
 
 
  
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Notes to Consolidated Financial Statements (Continued) 

(23) International Bancshares Corporation (Parent Company Only) Financial Information 

Statements of Income 
(Parent Company Only) 

Years ended December 31, 2006, 2005 and 2004 
(Dollars in Thousands) 

Income: 

Dividends from subsidiaries 
Interest income on notes receivable 
Interest income on other investments 
Other interest income 
Gain on sale of other securities 
Gain on sale of assets 
Other 

Total income 

Expenses: 

Interest expense (Debentures) 
Interest expense (Senior Notes) 
Other 

Total expenses 
Income before federal income taxes and equity in undistributed net 

income of subsidiaries 

Income tax benefit 

Income before equity in undistributed net income of subsidiaries

Equity in undistributed net income of subsidiaries

Net income 

75 

2006

2005 

2004

$ 113,839
126  
2,508  
1,339
—  
—
7
117,819  

22,568
—  
3,220  
25,788  

  $  51,450 
180   
1,351   
498   
—   
67   
4,047   
57,593   

18,587   
—   
946   
19,533   

  $ 62,950  
682  
1,437  
511
151  
1,659
5,683
73,073  

13,152
383  
1,271  
14,806  

92,031  
(7,918) 
99,949  
17,052  
$ 117,001

38,060   
(4,716 ) 
42,776   
98,003   
  $ 140,779 

58,267  
(1,559)
59,826  
59,206  
  $ 119,032

  
 
 
  
 
  
  
 
 
 
 
    
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Notes to Consolidated Financial Statements (Continued) 

(24) International Bancshares Corporation (Parent Company Only) Financial Information 

Statements of Cash Flows 
(Parent Company Only) 

Years ended December 31, 2006, 2005 and 2004 
(Dollars in Thousands) 

Operating activities: 

Net income 
Adjustments to reconcile net income to net cash provided by operating 

activities: 
Gain on sale of other investments 
Gain on sale of assets 
Accretion of junior subordinated interest deferrable debentures
Depreciation of bank premises and equipment
Stock compensation expense 
Increase in other liabilities 
Equity in undistributed net income of subsidiaries
Net cash provided by operating activities

Investing activities: 

Contributions to subsidiaries 
(Repurchase) proceeds of repurchase agreement with banks
Purchase of available for sale other securities
Proceeds of sales of available for sale securities
Proceeds from sales of bank premises and equipment
Net decrease in notes receivable 
(Increase) decrease in other assets 
Net cash (used in) provided by investing activities

Financing activities: 

Proceeds from issuance of subordinated debentures
Proceeds from payments of subordinated debentures
Principal payments on senior notes 
Proceeds from stock transactions 
Payments of cash dividends 
Payments of cash dividends in lieu of fractional shares
Purchase of treasury stock 
Net cash used in financing activities 
(Decrease) increase in cash 

Cash at beginning of year 
Cash at end of year 

76 

$

2006

2005 

2004

  $ 117,001    $ 140,779    $ 119,032  

—   
—   
548   
—   
874   
1,459   
(17,052 ) 
102,830   

(424 ) 
(3,703 ) 
—   
—   
—   
900   
(4,215 ) 
(7,442 ) 

—   
(67 ) 
996   
93   
—   
1,220   
(98,003 ) 
45,018   

(4,034 ) 
(1,800 ) 
—   
—   
147   
3,239   
2,629   
181   

75,259   
(101,290 ) 
—   
1,919   
(44,166 ) 
—   
(28,017 ) 
(96,295 ) 
(907 ) 
1,562   
655 

—   
—   
—   
5,478   
(40,808 ) 
(25 ) 
(8,669 ) 
(44,024 ) 
1,175   
387   
  $  1,562 

  $

(151)
(1,659)
1,026
15  
—  
904  
(59,206)
59,961

(9,581)
300  
(5,068)
5,010  
2,598  
5,750
(2,982)
(3,973)

—  
—
(21,295)
5,265
(39,729)
(38)
(974)
(56,771)
(783)
1,170
387

  
 
  
 
  
  
 
 
    
    
 
 
 
    
    
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Condensed Average Statements of Condition 

(Dollars in Thousands, Except Per Share Amounts) 
(Unaudited) 

Distribution of Assets, Liabilities and Shareholders’ Equity 

The following table sets forth a comparative summary of average interest earning assets and average interest bearing liabilities 

and related interest yields for the years ended December 31, 2006, 2005, and 2004: 

2006 

2005

2004 

   Average 
Balance 

Interest  

Average
Rate/Cost  

Average
Balance

  Interest  

Average
Rate/Cost  

(Dollars in Thousands)

Average 
Balance 

Interest  

Average
Rate/Cost  

Assets 

Interest earning assets: 
Loan, net of unearned 
discounts: 
Domestic 
Foreign 
Taxable 
Tax-exempt 
Federal funds sold 
Other 

Investment securities: 

Total interest-earning 
assets 
Non-interest earning assets: 
Cash and due from banks  
Bank premises and 
equipment, net 
Other assets 
Less allowance for possible 
loan losses 
Total 

Liabilities and Shareholders’ 
Equity 
Interest bearing liabilities: 
Savings and interest bearing 
demand deposits 
Time deposits: 
Domestic 
Foreign 
repurchase agreements 

Securities sold under 
Other borrowings 
Junior subordinated interest 
deferrable debentures 
Senior notes 

Total interest bearing 
Non-interest bearing liabilities:    

liabilities 
Demand Deposits 
Other liabilities 
Shareholders’ equity 

Total 

Net interest income 
Net yield on interest 
earning assets 

93,776   
75,016   
5,956   

  $ 4,507,583    $ 379,340  
288,906   
20,680  
4,379,218    200,474  
4,577  
3,596  
406  
9,350,455    609,073  
243,374   
369,058   
764,330   
(68,673 ) 
  $ 10,658,544    

  $ 2,122,302    $ 40,444
65,597  
57,480  

1,720,742   
1,527,958   
670,104   
30,137  
2,040,691    103,362  
232,260   
22,568  
—   
—  
8,314,057    319,588  
1,364,611   
145,538   
834,338   
  $ 10,658,544    

    $ 289,485

  8.42 %   $ 4,573,634  $ 325,447  
14,003  
257,247  
  7.16  

  4.58  
  4.88  
  4.79  
  6.82  

4,029,077  
100,441  
132,192  
8,992  

160,175  
4,862  
3,668  
550  

  6.51 %  

9,101,583  

508,705  

205,008  

323,946  
749,044  

(84,256 )
  $ 10,295,325

  1.91 %   $ 2,181,303 $ 26,936

  3.81  
  3.77  

  4.50  
  5.07  

  9.72  
  —  

1,709,275  
1,410,465  

751,247  
1,891,001  

235,905  
—  

39,104  
34,130  

27,384  
60,689  

18,587  
—  

  3.84 %  

8,179,196  

206,830  

1,253,694  
79,178  
783,257  
  $ 10,295,325

  $ 301,875

  5.59 %  

  3.98  
  4.84  
  2.77  
  6.12  

109,092  
5,071  
1,577  
559  

  7.12 %   $ 3,757,015    $ 225,002  
225,565   
11,077  
  5.44  
2,996,046   
111,671   
129,731   
11,612   
7,231,640   
162,278   
260,671   
552,880   
(69,324 ) 
  $ 8,138,145    

352,378  

  3.65  
  3.21  

19,865  
16,746  

  1.23 %   $ 1,832,714    $ 13,797
1,590,229   
22,879  
  2.29  
1,178,775   
21,780  
  2.42  
545,572   
1,083,222   
206,272   
3,340   
6,440,124   
988,659   
54,261   
655,101   
  $ 8,138,145    

13,152  
383  

  7.88  
  —  

  2.53 %  

108,602  

     $ 243,776

  5.99 %  
  4.91  

  3.64  
  4.54  
  1.22  
  4.81  

  4.87 %  

.75 %  

  1.44  
  1.85  

  3.64  
  1.55  

  6.38  
  11.47  

  1.69 %  

  3.10 %  

  3.32 %  

  3.37 %  

(Note 1) The average balances for purposes of the above table are calculated on the basis of month-end balances for 2005 and 2004. 

77 

 
 
  
  
 
 
 
  
  
 
  
 
  
  
 
  
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
  
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
  
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
  
 
 
 
  
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
  
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
  
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
 
  
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
    
 
 
 
 
 
 
    
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Condensed Quarterly Income Statements 

(Dollars in Thousands, Except Per Share Amounts) 

(Unaudited) 

2006 
Interest income 
Interest expense 
Net interest income 
(Recovery) provision for possible loan losses
Non-interest income 
Non-interest expense 
Income before income taxes 
Minority interest in consolidated subsidiaries
Income taxes 
Net income 
Per common share: 

Basic 
Net income 
Diluted 
Net income 

Fourth
Quarter(1)

Third 
Quarter

Second 
Quarter 

First 
Quarter

$ 160,829
87,658  
73,171  
1,216  
49,272  
73,070  
48,157  
40
16,342  
$ 31,775

$ 156,552 
86,600   
69,952   
1,954   
40,058   
69,028   
39,028   
—   
12,435   
$ 26,593 

  $ 149,374 
77,325   
72,049   
82   
47,022   
67,721   
51,268   
—   
16,610   
  $  34,658 

$ 142,318
68,005  
74,313  
597  
40,619  
78,858  
35,477  
—
11,502  
$ 23,975

$

$

.50

.50

$

$

.42 

.42 

  $ 

  $ 

.55 

.54 

$

$

.38

.37

(1)   Includes income related to corrections of the Company’s accounting for mortgage servicing rights. The after tax effect of the item 

was $1.43 million, which is immaterial for the year to net earnings, cash flow and shareholders’ equity. 

78 

 
 
  
 
 
  
  
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
    
    
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
INTERNATIONAL BANCSHARES CORPORATION AND SUBSIDIARIES 

Condensed Quarterly Income Statements 

(Dollars in Thousands, Except Per Share Amounts) 

(Unaudited) 

2005 
Interest income 
Interest expense 
Net interest income 
Provision for possible loan losses 
Non-interest income 
Non-interest expense 
Income before income taxes 
Income taxes 
Net income 
Per common share: 

Basic 
Net income 
Diluted 
Net income 

Fourth
Quarter

Third 
Quarter

Second 
Quarter 

First 
Quarter

$ 134,258
62,678  
71,580  
(1,675)
46,609  
66,355  
53,509  
19,230  
$ 34,279

$ 129,968 
54,745   
75,223   
(196 ) 
40,883   
64,620   
51,682   
16,214   
$ 35,468 

  $ 126,160 
48,201   
77,959   
221   
37,307   
64,989   
50,056   
16,684   
  $  33,372 

$ 118,319
41,206  
77,113  
2,610  
42,423  
60,024  
56,902  
19,242  
$ 37,660

$

$

.54

.53

$

$

.56 

.55 

  $ 

  $ 

.52 

.52 

$

$

.59

.58

79 

  
 
 
  
 
 
  
  
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
    
    
 
 
 
 
 
 
 
    
    
 
 
INTERNATIONAL BANCSHARES CORPORATION 
OFFICERS AND DIRECTORS 

OFFICERS 

  DIRECTORS

DENNIS E. NIXON 
Chairman of the Board and President 

DENNIS E. NIXON
President, International Bank of Commerce

R. DAVID GUERRA 
Vice President 

EDWARD J. FARIAS 
Vice President 

RICHARD CAPPS 
Vice President 

IMELDA NAVARRO 
Treasurer 

WILLIAM CUELLAR 
Auditor 

MARISA V. SANTOS 
Secretary 

HILDA V. TORRES 
Assistant Secretary 

LESTER AVIGAEL
Retail Merchant
Chairman of the Board
International Bank of Commerce 

IRVING GREENBLUM
International Investments/Real Estate 

R. DAVID GUERRA
President
International Bank of Commerce 
Branch in McAllen, TX

DANIEL B. HASTINGS, JR. 
Licensed U. S. Custom Broker 
President
Daniel B. Hastings, Inc.

RICHARD E. HAYNES
Attorney at Law
Real Estate Investments

IMELDA NAVARRO
Senior Executive Vice President 
International Bank of Commerce 

SIOMA NEIMAN
International Entrepreneur

PEGGY J. NEWMAN
Investments

LEONARDO SALINAS
Investments

ANTONIO R. SANCHEZ, JR. 
Chairman of the Board
Sanchez Oil & Gas Corporation 
Investments

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