COMERICA INC /NEW/
10-K, 2000-03-30
NATIONAL COMMERCIAL BANKS
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<PAGE>   1

Securities and Exchange Commission
Washington, DC 20549

Form 10-K

Annual Report Pursuant
to Section 13 or 15(d) of
the  Securities  Exchange  Act of 1934,
For the fiscal year ended  December 31, 1999.

Commission file number 1-10706

Comerica Incorporated
Comerica Tower at Detroit Center
500 Woodward Avenue, MC 3391
Detroit, Michigan 48226
1-800-521-1190

Incorporated in the State of Delaware,
IRS Employer Identification No. 38-1998421.

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

- -     Common Stock, $5 par value

- -     Rights to acquire Series D
      Preferred Stock, no par value

- -     Preferred Stock Series E, $50.00 liquidation preference per share

These securities are registered on the New York Stock Exchange.

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

- -     9 3/4 percent Subordinated
      Notes due 1999

- -     7 1/4 percent Subordinated
      Notes due in 2007

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






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<PAGE>   2

Disclosure  of  delinquent  filers  pursuant  to Item 405 of  Regulation  S-K is
contained in the definitive  proxy  statement  incorporated by reference in Part
III of this Form 10-K.

At March 22, 2000, the registrant's common stock, $5 par value, held by
nonaffiliates had an aggregate market value of $6,403,836,447 based on the
closing price on the New York Stock Exchange on that date of $43.00 per share
and 148,926,429 shares of common stock held by nonaffiliates. For purposes of
this Form 10-K only, it has been assumed that all common shares Comerica's Trust
Department holds for Comerica and Comerica's employee plans, and all common
shares the registrant's directors and executive officers hold, are held by
affiliates.

At March 22, 2000, the registrant had outstanding 157,233,088 shares of its
common stock, $5 par value.

DOCUMENTS INCORPORATED
BY REFERENCE:

1.   Parts I and II:
Items 1-8--Annual Report to Shareholders for the year ended December 31, 1999.

2.   Part III:
Items 10-13--Proxy Statement for the Annual Meeting of Shareholders to be held
May 19, 2000.

PART I

ITEM 1.    BUSINESS

GENERAL

Comerica Incorporated ("Comerica" or the "Corporation") is a registered bank
holding company incorporated under the laws of the State of Delaware,
headquartered in Detroit, Michigan. Based on assets as of December 31, 1999, it
was the 24th largest bank holding company in the United States and the largest
bank holding company headquartered in Michigan in terms of both total assets and
total deposits. Comerica was formed in 1973 to acquire the outstanding common
stock of Comerica Bank (formerly Comerica Bank-Detroit), one of Michigan's
oldest banks ("Comerica Bank"). Since that time, Comerica has acquired financial
institutions in California, Texas and Florida, and, in 1998 and 1997, Comerica
formed Comerica Bank-Canada and Comerica Bank-Mexico, S.A., respectively. As of
December 31, 1999, Comerica owned directly or indirectly all the outstanding
common stock of seven banking and thirty-one non-banking subsidiaries. At
December 31, 1999, Comerica had total assets of approximately $38.7 billion,
total deposits of approximately $23.3 billion, total loans (net of unearned
income) of approximately $32.7 billion and common shareholders' equity of
approximately $3.2 billion.

BUSINESS STRATEGY

Comerica has strategically aligned its operations into three major lines of
business: the Business Bank, the Individual Bank and the Investment Bank. The
Business Bank is comprised of middle market lending, asset-based lending, large
corporate banking, treasury management and international





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<PAGE>   3

financial services. This line of business meets the needs of medium-size
businesses, multinational corporations and governmental entities by offering
various products and services, including commercial loans and lines of credit,
deposits, cash management, capital market products, international trade finance,
letters of credit, foreign exchange management services and loan syndication
services.

The Individual Bank includes consumer lending, consumer deposit gathering,
mortgage loan origination and servicing, small business banking (annual sales
under $5 million) and private banking. This line of business offers a variety of
consumer products, including deposit accounts, direct and indirect installment
loans, credit cards, home equity lines of credit and residential mortgage loans.
In addition, a full range of financial services is provided to small businesses
and municipalities. Private lending and personal trust services are also
provided to meet the personal financial needs of affluent individuals (as
defined by individual net income or wealth).

The Investment Bank is responsible for the sale of mutual fund and annuity
products, as well as life, disability and long-term care insurance products.
This line of business also offers institutional trust products, retirement
services and provides investment management and advisory services, investment
banking and discount securities brokerage services.

The core businesses are tailored to each of Comerica's four primary geographic
markets: Michigan, Texas, California and Florida.

In addition to the three major lines of business, the Finance segment is also
significant. The Finance segment includes Comerica's securities portfolio and
asset and liability management activities. This segment is responsible for
managing Comerica's funding, liquidity and capital needs, performing interest
sensitivity gap and earnings simulation analysis and executing various
strategies to manage Comerica's exposure to interest rate risk.

Phase III of Direction 2000

In 1996, Comerica finalized the design of Direction 2000, the strategic effort
to prepare the organization for the new millennium. Following Comerica's 1995
organization of its business units into the Business, Individual and Investment
Banks, and the subsequent alignment and consolidation of back-office areas,
Comerica in 1996 identified which business lines it believed were best managed
on a local basis and a national basis, and realigned its support functions to
optimally link them to business strategies and corporate objectives. In the
third and final phase of this effort, Comerica employees systematically reviewed
all functions of the organization. The full effect of the plan was realized in
fiscal year 1999.

SUPERVISION AND REGULATION

Banks, bank holding companies and financial institutions are highly regulated at
both the state and federal level. As a bank holding company, Comerica is subject
to supervision and regulation by the Federal Reserve Board ("FRB") under the
Bank Holding Company Act of 1956, as amended (the "Act"). Under the Act, the
Corporation historically has been prohibited from engaging in activities other
than those of banking or managing or controlling banks, or from acquiring or
retaining direct or indirect ownership or control of voting shares of any
company which is not a bank or bank holding company or of an entity whose
activities the FRB determines to be so closely related to banking as to be a
proper incident thereto. However, under the Gramm-Leach-Bliley Act of 1999,
effective March 11, 2000,




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this prohibition does not apply if the activities engaged in by the Corporation
or the company whose voting shares are acquired by the Corporation are
activities which, generally, the FRB determines to be financial in nature or
incidental to such financial activity, or complementary to a financial activity
and do not pose a substantial risk to the safety or soundness of depository
institutions or the financial system generally.

Comerica Bank is chartered by the State of Michigan and is supervised and
regulated by the Financial Institutions Bureau of the State of Michigan.
Comerica Bank-Texas is chartered by the State of Texas and is supervised and
regulated by the Texas Department of Banking. Comerica Bank, National
Association and Comerica Bank & Trust, National Association are chartered under
federal law and subject to supervision and regulation by the Office of the
Comptroller of the Currency ("OCC"). Comerica Bank-California is chartered by
the State of California and is supervised and regulated by the California State
Banking Department. Comerica Bank, Comerica Bank & Trust, National Association
and Comerica Bank, National Association are members of the Federal Reserve
System ("FRS"). State member banks are also regulated by the FRB, and state
non-member banks are also regulated by the Federal Deposit Insurance Corporation
("FDIC"). The deposits of all the foregoing banks are insured by the Bank
Insurance Fund ("BIF") of the FDIC to the extent provided by law. Comerica
Bank-Mexico, S.A. is chartered under the laws of Mexico and is supervised and
regulated by the Ministry of Finance and Public Credit, the Bank of Mexico, and
the Mexican National Banking Commission. Comerica Bank-Canada is chartered under
the laws of Ontario, Canada and is supervised and regulated by the Office of the
Superintendent of Financial Institutions Canada and the Canada Deposit Insurance
Corporation.

The FRB supervises non-banking activities conducted by companies Comerica and
Comerica Bank own and the OCC supervises non-banking activities conducted by
companies owned by Comerica Bank & Trust, National Association. In addition,
Comerica's non-banking subsidiaries are subject to supervision and regulation by
various state and federal agencies, including, but not limited to, the National
Association of Securities Dealers, Inc. (in the case of Comerica Securities,
Inc.) the Department of Insurance of the State of Michigan (in the case of
Comerica Insurance, Inc.), and the Securities and Exchange Commission (in the
case of Munder Capital Management).

Set forth below are summaries of selected laws and regulations applicable to
Comerica and its subsidiaries. The summaries are not complete and are qualified
in their entirety by references to the particular statutes and regulations. A
change in applicable law or regulation could have a material effect on the
business of Comerica.

Interstate Banking and Branching

Pursuant to the Riegle-Neal Interstate Banking and Branching Efficiency Act of
1994 (the "Interstate Act"), a bank holding company became able to acquire banks
in states other than its home state, beginning September 29, 1995, without
regard to the permissibility of such acquisition under state law, but subject to
any state requirement that the bank has been organized and operating for a
minimum period of time, not to exceed five years, and the requirement that the
bank holding company, prior to and following the proposed acquisition, control
no more than ten percent of the total amount of deposits of insured depository
institutions in the United States and no more than thirty percent of such
deposits in that state (or such amount as established by state law).





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The Interstate Act also authorizes banks to merge across state lines, thereby
creating interstate branching. All of the states in which Comerica's banking
subsidiaries are located allow interstate branching. Furthermore, under the
Interstate Act, a bank is now able to open new branches in a state in which it
does not already have banking operations if such state enacts a law permitting
such de novo branching.

Since the provision permitting interstate bank acquisitions became effective,
Comerica has had enhanced opportunities to acquire banks in any state subject to
approval by the appropriate federal and state regulatory agencies. Under the
Interstate Act, Comerica has the opportunity to consolidate its affiliate banks
to create one bank with branches in more than one state, or to establish
branches in different states, subject to any state "opt-in" and "opt-out"
provisions.

Financial Modernization

Pursuant to the Gramm-Leach-Bliley Act of 1999, effective March 11, 2000, the
activities in which a bank holding company (each of the deposit institution
subsidiaries of which is well-capitalized and well-managed) may lawfully engage
have been expanded to include insurance underwriting, unlimited securities
underwriting, travel agent services, real estate development, and merchant
banking (the passive investment in equity securities in unlimited amounts).
Comerica is currently studying the advisability of undertaking certain of these
activities.

Dividends

Comerica is a legal entity separate and distinct from its banking and other
subsidiaries. Most of Comerica's revenues result from dividends its bank
subsidiaries pay it. There are statutory and regulatory requirements applicable
to the payment of dividends by subsidiary banks to Comerica as well as by
Comerica to its shareholders. Certain, but not all, of these requirements are
discussed below.

Each state bank subsidiary that is a member of the FRS and each national banking
association is required by federal law to obtain the prior approval of the FRB
or the OCC, as the case may be, for the declaration and payment of dividends, if
the total of all dividends declared by the board of directors of such bank in
any year will exceed the total of (i) such bank's retained net income (as
defined and interpreted by regulation) for that year plus (ii) the retained net
income (as defined and interpreted by regulation) for the preceding two years,
less any required transfers to surplus. Further, federal regulatory agencies can
prohibit a banking institution or bank holding company from engaging in unsafe
and unsound business practices and could prohibit the payment of dividends if
such payment could be deemed an unsafe and unsound banking practice. In
addition, Comerica's state bank subsidiaries that are not members of the FRS are
also subject to limitations under state law regarding the amount of earnings
that may be paid out as dividends.

At January 1, 2000, Comerica's subsidiary banks, without obtaining prior
governmental approvals, could declare aggregate dividends of approximately $879
million from retained net profits of the preceding two years, plus an amount
approximately equal to the net profits (as measured under current regulations),
if any, earned for the period from January 1, 2000 through the date of
declaration. Comerica's subsidiary banks paid dividends of $261 million in 1999,
$442 million in 1998, and $354 million in 1997.





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Source of Strength

According to Federal Reserve Board Policy, bank holding companies are expected
to act as a source of strength to each subsidiary bank and to commit resources
to support each subsidiary bank. This support may be required at times when a
bank holding company may not be able to provide such support. Similarly, under
the cross-guarantee provisions of the Federal Deposit Insurance Act, in the
event of a loss suffered or anticipated by the FDIC (either as a result of the
default of a banking or thrift subsidiary or related to FDIC assistance provided
to a subsidiary in danger of default) one of the other banking subsidiaries may
be assessed for the FDIC's loss, subject to certain exceptions.

FDICIA

FDICIA substantially revised the bank regulatory and funding provisions of the
Federal Deposit Insurance Act and made revisions to several other federal
banking statutes. Among other things, FDICIA requires the federal banking
agencies to take "prompt corrective action" in respect of depository
institutions that do not meet minimum capital requirements. FDICIA establishes
five capital tiers: "well capitalized," "adequately capitalized,"
"undercapitalized," "significantly undercapitalized" and "critically
undercapitalized." A depository institution's capital tier will depend upon
where its capital levels are in relation to various relevant capital measures,
which, among others, include a Tier 1 and total risk-based capital measure and a
leverage ratio capital measure, and certain other factors.


Regulations establishing the specific capital tiers provide that, for an
institution to be well capitalized it must have a total risk-based capital ratio
of at least 10 percent, a Tier 1 risk-based capital ratio of at least 6 percent,
a Tier 1 leverage ratio of at least 5 percent and not be subject to any specific
capital order or directive. For an institution to be adequately capitalized it
must have a total risk-based capital ratio of at least 8 percent, a Tier 1
risk-based capital ratio of at least 4 percent and a Tier 1 leverage ratio of at
least 4 percent (and in some cases 3 percent). Under certain circumstances, the
appropriate banking agency may treat a well capitalized, adequately capitalized
or undercapitalized institution as if the institution were in the next lower
capital category. As of December 31, 1999, each of the banking subsidiaries of
Comerica were well capitalized under these regulations.

FDICIA generally prohibits a depository institution from making any capital
distribution (including payment of a dividend) or paying any management fee to
its holding company if the depository institution would thereafter be
undercapitalized. Undercapitalized depository institutions are subject to
limitations on growth and certain activities and are required to submit an
acceptable capital restoration plan. The federal banking agencies may not accept
a capital plan without determining, among other things, that the plan is based
on realistic assumptions and is likely to succeed in restoring the depository
institution's capital. In addition, for a capital restoration plan to be
acceptable, the depository institution's parent holding company must guarantee
for a specific time period that the institution will comply with such capital
restoration plan. The aggregate liability of the parent holding company under
the guaranty is limited to the lesser of (i) an amount equal to 5 percent of the
depository institution's total assets at the time it became undercapitalized,
and (ii) the amount that is necessary (or would have been necessary) to bring
the institution into compliance with all capital standards applicable with
respect to such institution as of the time it fails to comply with




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the plan. If a depository institution fails to submit or implement an acceptable
plan, it is treated as if it is significantly undercapitalized.

Significantly undercapitalized depository institutions are subject to a number
of requirements and restrictions, including orders to sell sufficient voting
stock to become adequately capitalized, requirements to reduce total assets,
restrictions on interest rates, deposits and asset growth and orders to improve
management cessation of receipt of deposits from correspondent banks. Critically
undercapitalized institutions are subject to the appointment of a receiver or
conservator.

Under FDICIA, the FDIC is permitted to provide financial assistance to an
insured bank before appointment of a conservator or receiver only if (i) such
assistance would be the least costly method of meeting the FDIC's insurance
obligations, (ii) grounds for appointment of a conservator or a receiver exist
or are likely to exist in the future, (iii) it is unlikely that the bank can
meet all capital standards without assistance and (iv) the bank's management has
been competent, has complied with applicable laws, regulations, rules and
supervisory directives and has not engaged in any insider dealing, speculative
practice or other abusive activity.

FDICIA also contains a variety of other provisions that may affect the
operations of depository institutions including new reporting requirements,
regulatory standards for real estate lending, "truth in savings" provisions, the
requirement that a depository institution give 90 days prior notice to customers
and regulatory authorities before closing any branch and a prohibition on the
acceptance or renewal of brokered deposits by depository institutions that are
not well capitalized or are adequately capitalized and have not received a
waiver from the FDIC. Under regulations relating to the brokered deposit
prohibition, Comerica's United States subsidiary banks are all well-capitalized
and may accept brokered deposits without restriction.


FDIC Insurance Assessments

Comerica's subsidiary banks are subject to FDIC deposit insurance assessments.
On January 1, 1994, a risk-based deposit premium assessment system became
effective under which each depository institution is placed in one of nine
assessment categories based on certain capital and supervisory measures. The
deposit insurance assessment schedule published by the FDIC for the assessment
period commencing January 1, 1998, maintained the nine categories but provided
for major reductions in the assessment rates for institutions insured by BIF.
These reductions occurred because the balance in BIF has reached or surpassed
the "designated reserve ratio" set by law for the balance in the fund to
maintain with respect to BIF-insured deposits. The FDIC has continued these
reduced assessment levels.

Enforcement Powers of Federal Banking Agencies

The FRB and other federal banking agencies have broad enforcement powers,
including the power to terminate deposit insurance, impose substantial fines and
other civil and criminal penalties and appoint a conservator or receiver.
Failure to comply with applicable laws, regulations and supervisory agreements
could subject Comerica or its banking subsidiaries, as well as officers and
directors of these organizations, to administrative sanctions and potentially
substantial civil penalties.






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<PAGE>   8

COMPETITION

Banking is a highly competitive business. The Michigan banking subsidiary of the
Corporation competes primarily with Detroit and outstate Michigan banks for
loans, deposits and trust accounts. Through its offices in Arizona, California,
Colorado, Connecticut, Florida, Georgia, Indiana, Illinois, Nevada, Ohio and
Texas, Comerica competes with other financial institutions for various types of
loans. Through its Florida branches, Comerica competes with many companies,
including financial institutions, for trust business.

At year-end 1999, Comerica was the largest bank holding company headquartered in
Michigan in terms of total assets and deposits. Based on the Interstate Act as
described above, the Corporation believes that the level of competition in all
geographic markets will increase in the future. Comerica's banking subsidiaries
also face competition from other financial intermediaries, including savings and
loan associations, consumer finance companies, leasing companies and credit
unions.

EMPLOYEES

As of December 31, 1999, Comerica and its subsidiaries had 8,997 full-time and
1,845 part-time employees.



ITEM 2.  PROPERTIES

The executive offices of the Corporation are located in the Comerica Tower at
Detroit Center, 500 Woodward Ave., Detroit, Michigan 48226. Comerica and its
subsidiaries occupy 13 floors of the building, which is leased through Comerica
Bank from an unaffiliated third party. This lease extends through January 2007.
As of December 31, 1999, Comerica Bank operated 290 offices within the States of
Michigan and Florida, of which 180 were owned and 110 were leased. Two other
banking affiliates operate 114 offices in California and Texas. The affiliates
own 50 of their offices and lease 64 offices. Banking affiliates also operate
from leased spaces in Toledo, Ohio; Mexico City, Mexico; and Toronto, Ontario,
Canada.

The Corporation owns an operations and check processing center in Livonia,
Michigan, a ten-story building in the central business district of Detroit that
houses certain departments of the Corporation and Comerica Bank and a building
in Auburn Hills, Michigan, used mainly for consumer lending functions.

In 1983, Comerica entered into a sale/leaseback agreement with an unaffiliated
party covering an operations center which was built in Auburn Hills, Michigan,
and now is occupied by various departments of the Corporation and Comerica Bank.






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ITEM 3. LEGAL PROCEEDINGS

The Corporation and its subsidiaries are parties to litigation and claims
arising in the normal course of their activities. Although the amount of
ultimate liability, if any, with respect to such matters cannot be determined
with reasonable certainty, management, after consultation with legal counsel,
believes that the litigation and claims, some of which are substantial, will not
have a material adverse effect on the Corporation's consolidated financial
position.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

No matters were submitted to shareholders in the fourth quarter of 1999.

PART II

ITEM 5.  MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

The common stock of Comerica Incorporated is traded on the New York Stock
Exchange (NYSE Trading Symbol: CMA). At March 22, 2000, there were approximately
17,511 holders of the Corporation's common stock. The stock prices and dividend
information contained in this table have been adjusted to give effect to the
stock split effected in the form of a 50% stock dividend paid on April 1, 1998.

Quarterly cash dividends were declared during 1999 and 1998, totaling $1.44 and
$1.28 per common share per year, respectively. The following table sets forth,
for the periods indicated, the high and low sale prices per share of the
Corporation's common stock as reported on the NYSE Composite Transactions Tape
for all quarters of 1999 and 1998.


<TABLE>
<CAPTION>
- -------------------------------------------------------------------------
                                       Dividend        Dividend*
Quarter       High        Low          Per Share       Yield
- -------------------------------------------------------------------------
<S>            <C>         <C>          <C>            <C>
1999

Fourth         $61.38      $44.00       $0.36          2.7%

Third           61.63       47.63        0.36          2.6

Second          66.63       57.31        0.36          2.3

First           70.00       58.94        0.36          2.2

1998

Fourth         $69.00      $46.50       $0.32          2.2%

Third           71.94       51.00        0.32          2.1

Second          73.00       61.94        0.32          1.9

First           72.13       54.33        0.32          2.0
</TABLE>


*   Dividend yield is calculated by annualizing the quarterly dividend per share
    and dividing by an average of the high and low price in the quarter.




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<PAGE>   10

ITEM 6.  SELECTED FINANCIAL DATA

The response to this item is included on page 21 of the Corporation's Annual
Report to Shareholders for the year ended December 31, 1999, which page is
hereby incorporated by reference.

ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS

The response to this item is included under the caption "Financial Review and
Report" on pages 22 through 39 of the Corporation's Annual Report to
Shareholders for the year ended December 31, 1999, which pages are hereby
incorporated by reference.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The response to this item is included on pages 34 through 38 of the
Corporation's Annual Report to Shareholders for the year ended December 31,
1999, which pages are hereby incorporated by reference.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The response to this item is included on pages 40 through 68 of the
Corporation's Annual Report to Shareholders for the year ended December 31,
1999, which pages are hereby incorporated by reference.

ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURE

None.

PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

The response to this item will be included under the sections captioned
"Information About Nominees and Incumbent Directors," "Executive Officers" and
"Section 16(a) Beneficial Ownership Reporting Compliance" of the Corporation's
definitive Proxy Statement relating to the Annual Meeting of Shareholders to be
held on May 19, 2000, which sections are hereby incorporated by reference.

ITEM 11. EXECUTIVE COMPENSATION

The response to this item will be included under the sections captioned
"Compensation of Directors" and "Compensation of Executive Officers" of the
Corporation's definitive Proxy Statement relating to the Annual Meeting of
Shareholders to be held on May 19, 2000, which sections are hereby incorporated
by reference.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The response to this item will be included under the sections captioned
"Security Ownership of Certain Beneficial Owners" and "Security Ownership of
Management" of the Corporation's



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<PAGE>   11


definitive Proxy Statement relating to the Annual Meeting of Shareholders to be
held on May 19, 2000, which sections are hereby incorporated by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

The response to this item will be included under the sections captioned
"Transactions of Directors and Executive Officers with Comerica" and
"Information about Nominees and Incumbent Directors" of the Corporation's
definitive Proxy Statement relating to the Annual Meeting of Shareholders to be
held on May 19, 2000, which sections are hereby incorporated by reference.

















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Comerica Incorporated and Subsidiaries
FORM 10-K CROSS-REFERENCE INDEX

Certain information required to be included in this Form 10-K is included in the
1999 Annual Report to Shareholders or in the 2000 Proxy Statement used in
connection with the 2000 annual meeting of share-holders to be held on May 19,
2000.

The following cross-reference index shows the page location in the 1999 Annual
Report or the section of the 2000 Proxy Statement of only that information which
is to be incorporated by reference into this Form 10-K.

All other sections of the 1999 Annual Report or the 2000 Proxy Statement are not
required in this Form 10-K and should not be considered a part thereof.

                                                             Page Number of 1999
                                                        Annual Report of Section
                                                         of 2000 Proxy Statement

<TABLE>
<CAPTION>

                  PART I

<S>      <C>                                                                                             <C>
ITEM 1.  Business....................................................................................... Included herein
ITEM 2.  Properties..................................................................................... Included herein
ITEM 3.  Legal Proceedings.............................................................................. Included herein
ITEM 4.  Submission of Matters to a Vote of Security Holders -- no matters were
                 voted upon by  security  holders in the fourth quarter of 1999.

                PART II

ITEM 5.    Market for Registrant's Common Equity and Related Security Holder Matters.................... Included herein
ITEM 6.    Selected Financial Data................................................................................... 21
ITEM 7.    Management's Discussion and Analysis of Financial Condition and Results of Operations ................. 22-39
ITEM 8.    Financial Statements and Supplementary Data:
           Comerica Incorporated and Subsidiaries
               Consolidated Balance Sheets........................................................................... 40
               Consolidated Statements of Income....................................................................  41
               Consolidated Statements of Changes in Shareholders' Equity ........................................... 42
               Consolidated Statements of Cash Flows................................................................. 43
           Notes to Consolidated Financial Statements................................................................ 44
           Report of Management...................................................................................... 65
           Report of Independent Auditors............................................................................ 65

           Statistical Disclosure by Bank Holding Companies:
           Analysis of Net Interest  Income - Fully Taxable Equivalent............................................... 23
           Rate-Volume Analysis - Fully Taxable Equivalent........................................................... 24
           Analysis of the Allowance for Credit Losses............................................................... 26
           Analysis of Investment Securities and Loans............................................................... 29
           Allocation of the Allowance for Credit Losses............................................................. 30
           Loan Maturities and Interest Rate Sensitivity............................................................. 30
           International Cross-Border Risk........................................................................... 30
           Maturity Distribution of Domestic Certificates of Deposit of $100,000 and Over............................ 31
           Analysis of Investment Securities Portfolio - Fully Taxable Equivalent.................................... 33
           Summary of Nonperforming Assets and Past Due Loans........................................................ 33

ITEM 9.    Changes in and Disagreements with Accountants on Accounting and Financial Disclosure - None.

           PART III

ITEM 10.   Directors and Executive Officers of the Registrant ... Information About Nominees and Incumbent Directors,
                                                                            Executive Officers of the Corporation and
                                                                                   Section 16(a) Beneficial Ownership
                                                                                                 Reporting Compliance
</TABLE>







                                       12
<PAGE>   13

<TABLE>
<S>        <C>
ITEM 11.   Executive Compensation.......................................................Compensation of Directors and
                                                                                  Compensation of  Executive Officers

ITEM 12.   Security Ownership of Certain Beneficial Owners and Management..........................Security Ownership
                                                                            of Certain Beneficial Owners and Security
                                                                                              Ownership of Management

ITEM 13.   Certain Relationships and Related Transactions...............................Transactions of Directors and
                                                                                 Executive Officers with Comerica and
                                                                   Information about Nominees and Incumbent Directors
</TABLE>


PART IV

ITEM 14.   EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

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

               1.   Financial Statements: The financial statements that are
                    filed as part of this report are listed under Item 8 in the
                    Form 10-K Cross-Reference Index on page 12.

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

           Exhibits:

           Exhibit Document Number

             3.1    Restated Certificate of Incorporation of Comerica
                    Incorporated, as amended(2)

             3.2    Amended and restated bylaws of Comerica Incorporated

             4      Rights Agreement between Comerica Incorporated and Comerica
                    Bank(4)

             10.1+  Comerica Incorporated 1997 Long-Term Incentive Plan(2)

             10.2+  Comerica Incorporated Management Incentive Plan, 1997(2)

             10.3+  Comerica Incorporated Director Fee Deferral Plan(2)

             10.4+  Benefit Equalization Plan for Employees of Comerica
                    Incorporated(2)

             10.5+  Comerica Incorporated's Directors Retirement Plan(5)

             10.6+  Manufacturers National Corporation's 1987 and 1989 Stock
                    Option Plans for Key Employees(5)

             10.7+  Manufacturers National Corporation's Executive Incentive
                    Plan(5)

             10.8+  Manufacturers National Corporation's Key Employee Retention
                    Plan(5)

             10.9+  Form of Employment Agreement (Exec Off.)(6)







                                       13
<PAGE>   14

             10.10+ Form of Director Indemnification Agreement between Comerica
                    Incorporated and its directors(2)

             10.11+ Employment Continuation Agreement with Eugene A. Miller(5)

             10.12+ Supplemental Pension and Retiree Medical Agreement with
                    Ralph W. Babb Jr.(7)

             10.13+ Employment Agreement with Ralph W. Babb Jr.(7)

             10.14+ Comerica Incorporated Deferred Compensation Plan, 1997
                    Amendment and Restatement(2)

             10.15+ Amended and Restated Comerica Incorporated 1997 Long-Term
                    Incentive Plan, November 19, 1999

             10.16+ Amended and Restated Comerica Incorporated Management
                    Incentive Plan, November 19, 1999

             10.17+ Form of Comerica Incorporated Senior Officer Severance Plan
                    between registrant and listed officers, January 1, 1997(2)

             10.18+ 1999 Comerica Incorporated Deferred Compensation Plan,
                    January 1, 1999

             10.19+ 1999 Comerica Incorporated Deferred 3 Year ROE Award Plan,
                    January 1, 1999

             10.20+ Amended and Restated Comerica Incorporated Stock Option Plan
                    For Non-Employee Directors, January 20, 2000

             10.21+ Comerica Incorporated 1999 Discretionary Director Fee
                    Deferral Plan May 21, 1999

             10.22+ Comerica Incorporated 1999 Common Stock Director Fee
                    Deferral Plan May 21, 1999

             11     Statement regarding Computation of Per Share Earnings(8)

             13     Registrant's 1999 Annual Report to Shareholders

             21     Subsidiaries of Registrant

             23     Consent of Ernst & Young LLP

             27     1999 Financial Data Schedule (EDGAR version only)

           (b) No reports on Form 8-K were filed by the Corporation during the
               last quarter of 1999.


       (2) Filed as the same exhibit number to Registrant's Annual Report on
           Form 10-K for the year ended December 31, 1996, and incorporated
           herein by reference.

       (4) Incorporated by reference from a report filed by Registrant on Form
           8-K dated June 18, 1996, regarding the Registrant's Rights Agreement
           with Comerica Bank.

       (5) Incorporated by reference from Registrant's Annual Report on Form
           10-K for the year ended December 31, 1992 -- Commission File Number
           0-7269.






                                       14
<PAGE>   15

       (6) Incorporated by reference from Registrant's Annual Report on Form
           10-K for the year ended December 31, 1997 -- Commission File Number
           1-10706.

       (7) Incorporated by reference from Registrant's Form 10-Q for the quarter
           ended June 30, 1998 -- Commission File Number 1-1076.

       (8) Incorporated by reference from Note 12 on page 50 of Registrant's
           Annual Report to Shareholders attached hereto as Exhibit 13.
        +  Management compensation plan.













                                       15
<PAGE>   16


SIGNATURES

Pursuant to the requirements of Section 13 and 15(d) of the Securities Exchange
Act of 1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned thereunto duly authorized in the City of Detroit,
State of Michigan on the 29th day of March, 2000.

COMERICA INCORPORATED


/s/ Eugene A. Miller
- -----------------------------------------------
Eugene A. Miller
Chairman, President and Chief Executive Officer

/s/ Ralph W. Babb Jr.
- -----------------------------------------------
Ralph W. Babb Jr.
Vice Chairman and Chief Financial Officer

/s/ Marvin J. Elenbaas
- -----------------------------------------------
Marvin J. Elenbaas
Senior Vice President and Controller
(Chief Accounting Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed by the following persons in the capacities indicated on the
29th day of March, 2000.


BY DIRECTORS


/s/ E. Paul Casey
- -----------------------------------------------
E. Paul Casey

/s/ James F. Cordes
- -----------------------------------------------
James F. Cordes

/s/ J. Philip DiNapoli
- -----------------------------------------------
J. Philip DiNapoli

/s/ Max M. Fisher
- -----------------------------------------------
Max M. Fisher

/s/ John D. Lewis
- -----------------------------------------------
John D. Lewis











                                       16
<PAGE>   17



/s/ Wayne B. Lyon
- -----------------------------------------------
Wayne B. Lyon

/s/ Eugene A. Miller
- -----------------------------------------------
Eugene A. Miller

/s/ Alfred A. Piergallini
- -----------------------------------------------
Alfred A. Piergallini

/s/ Howard F. Sims
- -----------------------------------------------
Howard F. Sims

/s/ Martin D. Walker
- -----------------------------------------------
Martin D. Walker

/s/ Patricia M. Wallington
- -----------------------------------------------
Patricia M. Wallington

/s/ Kenneth L. Way
- -----------------------------------------------
Kenneth L. Way



















                                       17
<PAGE>   18
                              Exhibit Index
                              -------------



  Exhibit No.                  Description
  -----------                  -----------



     3.1    Restated Certificate of Incorporation of Comerica
            Incorporated, as amended(2)

     3.2    Amended and restated bylaws of Comerica Incorporated

     4      Rights Agreement between Comerica Incorporated and Comerica
            Bank(4)

     10.1+  Comerica Incorporated 1997 Long-Term Incentive Plan(2)

     10.2+  Comerica Incorporated Management Incentive Plan, 1997(2)

     10.3+  Comerica Incorporated Director Fee Deferral Plan(2)

     10.4+  Benefit Equalization Plan for Employees of Comerica
            Incorporated(2)

     10.5+  Comerica Incorporated's Directors Retirement Plan(5)

     10.6+  Manufacturers National Corporation's 1987 and 1989 Stock
            Option Plans for Key Employees(5)

     10.7+  Manufacturers National Corporation's Executive Incentive
            Plan(5)

     10.8+  Manufacturers National Corporation's Key Employee Retention
            Plan(5)

     10.9+  Form of Employment Agreement (Exec Off.)(6)

     10.10+ Form of Director Indemnification Agreement between Comerica
            Incorporated and its directors(2)

     10.11+ Employment Continuation Agreement with Eugene A. Miller(5)

     10.12+ Supplemental Pension and Retiree Medical Agreement with
            Ralph W. Babb Jr.(7)

     10.13+ Employment Agreement with Ralph W. Babb Jr.(7)

     10.14+ Comerica Incorporated Deferred Compensation Plan, 1997
            Amendment and Restatement(2)

     10.15+ Amended and Restated Comerica Incorporated 1997 Long-Term
            Incentive Plan, November 19, 1999

     10.16+ Amended and Restated Comerica Incorporated Management
            Incentive Plan, November 19, 1999

     10.17+ Form of Comerica Incorporated Senior Officer Severance Plan
            between registrant and listed officers, January 1, 1997(2)

     10.18+ 1999 Comerica Incorporated Deferred Compensation Plan,
            January 1, 1999

     10.19+ 1999 Comerica Incorporated Deferred 3 Year ROE Award Plan,
            January 1, 1999

     10.20+ Amended and Restated Comerica Incorporated Stock Option Plan
            For Non-Employee Directors, January 20, 2000

     10.21+ Comerica Incorporated 1999 Discretionary Director Fee
            Deferral Plan May 21, 1999

     10.22+ Comerica Incorporated 1999 Common Stock Director Fee
            Deferral Plan May 21, 1999

     11     Statement regarding Computation of Per Share Earnings(8)

     13     Registrant's 1999 Annual Report to Shareholders

     21     Subsidiaries of Registrant

     23     Consent of Ernst & Young LLP

     27     1999 Financial Data Schedule (EDGAR version only)

  (b) No reports on Form 8-K were filed by the Corporation during the
      last quarter of 1999.

(1) This is a conformed copy of the 1999 Form 10-K and does not include
    exhibits.

(2) Filed as the same exhibit number to Registrant's Annual Report on
    Form 10-K for the year ended December 31, 1996, and incorporated
    herein by reference.

(4) Incorporated by reference from a report filed by Registrant on Form
    8-K dated June 18, 1996, regarding the Registrant's Rights Agreement
    with Comerica Bank.

(5) Incorporated by reference from Registrant's Annual Report on Form
    10-K for the year ended December 31, 1992 -- Commission File Number
    0-7269.

(6) Incorporated by reference from Registrant's Annual Report on Form
    10-K for the year ended December 31, 1997 -- Commission File Number
    1-10706.

(7) Incorporated by reference from Registrant's Form 10-Q for the quarter
    ended June 30, 1998 -- Commission File Number 1-1076.

(8) Incorporated by reference from Note 12 on page 50 of Registrant's
    Annual Report to Shareholders attached hereto as Exhibit 13.

 +  Management compensation plan.











<PAGE>   1
                                                         AS AMENDED AND RESTATED
                                                                 ON MAY 21, 1999

                              AMENDED AND RESTATED

                                     BYLAWS

                                       OF

                              COMERICA INCORPORATED



                                    ARTICLE I

                                     OFFICES

SECTION 1. REGISTERED OFFICE. The registered office shall be in the City of
Wilmington, County of New Castle, State of Delaware.

SECTION 2. OTHER OFFICES. The Corporation may also have offices at such other
places both within and without the State of Delaware as the Board of Directors
may from time to time determine or the business of the Corporation may require.


                                   ARTICLE II

                            MEETINGS OF SHAREHOLDERS

SECTION 1. PLACE OF MEETING. All meetings of the shareholders of this
Corporation shall be held at such time and place, either within or without the
State of Delaware, as shall be designated from time to time by the Board of
Directors and stated in the notice of the meeting.

SECTION 2. ANNUAL MEETING OF SHAREHOLDERS. The annual meeting of shareholders
shall be held on the third Friday of May of each year, if not a legal holiday,
and, if a legal holiday, then on the next secular day following, at 10:00 a.m.,
or at such other date and time as shall be designated from time to time by the
Board of Directors and stated in the notice of the meeting. At said meeting,
shareholders shall elect by a plurality vote the directors to be elected at such
meeting, and shall transact such other business as may properly be brought
before the meeting.

SECTION 3. NOTICE OF MEETING OF SHAREHOLDERS. Written notice of every meeting of
shareholders stating the place, date and hour of the meeting, and, in the case
of a special meeting, the purpose or purposes for which the meeting is called,
shall be given to each shareholder entitled to vote at such meeting not less
than ten (10) nor more than sixty (60) days before the date of the meeting.



<PAGE>   2





SECTION 4. LIST OF SHAREHOLDERS ENTITLED TO VOTE. The officer who has charge of
the stock ledger of the Corporation shall prepare and make, at least ten (10)
days before every meeting of shareholders, a complete list of the shareholders
entitled to vote at the meeting, arranged in alphabetical order, and showing the
address of each shareholder and the number of shares registered in the name of
each shareholder. Such list shall be open to the examination of any shareholder,
for any purpose germane to the meeting, during ordinary business hours, for a
period of at least ten (10) days prior to the meeting, either at a place within
the city where the meeting is to be held, which place shall be specified in the
notice of the meeting, or, if not so specified, at the place where the meeting
is to be held. The list shall also be produced and kept at the time and place of
the meeting during the whole time thereof, and may be inspected by any
shareholder who is present.

SECTION 5. SPECIAL MEETINGS OF SHAREHOLDERS. Special meetings of the
shareholders, for any purpose or purposes, unless otherwise prescribed by
statute or by the Corporation's certificate of incorporation, may be called by
the Chairman of the Board of Directors or, during the absence or disability of
the Chairman or while that office is vacant, by the President; and shall be
called by the President or Secretary at the request in writing of a majority of
the Board of Directors, or at the request in writing of shareholders owning, in
the aggregate, at least seventy-five percent (75%) in amount of the entire
capital stock of the Corporation issued and outstanding and entitled to vote at
such special meeting. Such request shall state the purpose or purposes of the
proposed meeting.

SECTION 6. QUORUM OF SHAREHOLDERS. The holders of a majority of the stock issued
and outstanding and entitled to vote thereat, present in person or represented
by proxy, shall constitute a quorum at all meetings of the shareholders for the
transaction of business, except as otherwise provided by statute or by the
Corporation's certificate of incorporation. If, however, such quorum shall not
be present or represented at any meeting of the shareholders, the shareholders
entitled to vote thereat, present in person or represented by proxy, shall have
power to adjourn the meeting from time to time, without notice other than
announcement at the meeting, until a quorum shall be present or represented. At
such adjourned meeting at which a quorum shall be present or represented, any
business may be transacted which might have been transacted at the meeting as
originally notified. If the adjournment is for more than thirty (30) days, or if
after the adjournment a new record date is fixed for the adjourned meeting, a
notice of the adjourned meeting shall be given to each shareholder of record
entitled to vote at the meeting.

SECTION 7. REQUIRED VOTE. When a quorum is present at any meeting, the vote of
the holders of a majority of the stock having voting power, present in person or
represented by proxy, shall decide any question brought before such meeting,
unless the question is one upon which a different vote is required by statute or
by the Corporation's certificate of incorporation.




                                        2

<PAGE>   3





SECTION 8. ONE VOTE PER SHARE. Unless otherwise provided in the Corporation's
certificate of incorporation or in a certificate filed pursuant to Section
151(g) of the General Corporation Law of Delaware, as amended, each shareholder
shall at every meeting of the shareholders be entitled to one vote, in person or
by proxy, for each share of the capital stock having voting power held by such
shareholder, but no proxy shall be voted after three (3) years from its date,
unless the proxy provides for a longer period.

SECTION 9. NATURE OF BUSINESS. At any meeting of shareholders, only such
business shall be conducted as shall have been brought before the meeting by or
at the direction of the Board of Directors or by any shareholder who complies
with the procedures set forth in this Section 9. No business may be transacted
at any meeting of shareholders, other than business that is either:

(a)      specified in the notice of meeting (or any supplement thereto) given by
         or at the direction of the Board of Directors (or any duly authorized
         committee thereof);

(b)      otherwise properly brought before such meeting of shareholders by or at
         the direction of the Board of Directors (or any duly authorized
         committee thereof); or

(c)      in the case of an annual meeting of shareholders, otherwise properly
         brought before such meeting by any shareholder (i) who is a shareholder
         of record on the date of the giving of the notice provided for in this
         Section 9 and on the record date for the determination of shareholders
         entitled to vote at such annual meeting of shareholders; and (ii) who
         complies with the notice procedures set forth in this Section 9.

Time of Shareholder's Notice. In addition to any other applicable requirements,
such as the requirements set forth in Article III, Section 12 of the
Corporation's bylaws regarding director candidate nominations, for business to
be properly brought before an annual meeting of shareholders by a shareholder,
such shareholder must have given timely notice thereof in proper written form to
the Secretary of the Corporation. To be timely, a shareholder's notice to the
Secretary of the Corporation must be delivered to or mailed and received at the
principal executive offices of the Corporation not later than the close of
business on the ninetieth (90th) day nor earlier than the close of business on
the one hundred twentieth (120th) day prior to the first anniversary of the
immediately preceding year's annual meeting of shareholders; provided, however,
that in the event that the date of the annual meeting of shareholders is more
than thirty (30) days before or more than sixty 60 days after such anniversary
date, notice by the shareholder in order to be timely must be so received not
earlier than the close of business on the one hundred twentieth (120th) day
prior to such annual meeting and not later than the close of business on the
later of the ninetieth (90th) day prior to such annual meeting or the tenth
(10th) day following the day on which public announcement of the date of such
meeting of shareholders was first made. In no event shall the public
announcement of an adjournment of an annual meeting commence a new time period
for the giving of a




                                       3

<PAGE>   4




shareholder's notice as described above. For purpose of this Section 9, "public
announcement" shall mean disclosure in a press release reported by the Dow Jones
News Service, Associated Press or comparable national news service, or in a
document publicly filed by the Corporation with the Securities and Exchange
Commission pursuant to Section 13, 14 or 15(d) of the Exchange Act.

Notwithstanding anything in the second sentence of the immediately preceding
paragraph to the contrary, in the event that the number of directors to be
elected to the Board of Directors of the Corporation is increased and there is
no public announcement naming all of the nominees for director or specifying the
size of the increased Board of Directors made by the Corporation at least 100
days prior to the first anniversary of the preceding year's annual meeting, a
shareholder's notice required by this bylaw shall also be considered timely, but
only with respect to nominees for any new positions created by such increase, if
it is delivered to the Secretary or mailed and received at the principal
executive offices of the Corporation not later than the close of business on the
10th day following the day on which such public announcement is first made by
the Corporation.

Form of Shareholder's Notice. To be in proper written form, a shareholder's
notice to the Secretary of the Corporation must set forth as to each matter such
shareholder proposes to bring before the annual meeting of shareholders: (a) a
brief description of the business desired to be brought before the annual
meeting of shareholders and the reasons for conducting such business at the
annual meeting of shareholders; (b) the name and address of such shareholder and
beneficial owner, if any, as they appear on the Corporation's books; (c) the
class or series and number of shares of capital stock of the Corporation which
are owned beneficially or of record by such shareholder as of the record date
for the meeting (if such date shall then have been made publicly available and
shall have occurred); (d) as of the date of such notice, a description of all
arrangements or understandings between such shareholder and any other person or
persons (including their names) in connection with the proposal of such business
by such shareholder and any material interest of such shareholder in such
business; (e) any other information which would be required to be disclosed in a
proxy statement or other filings required to be made in connection with the
solicitation of proxies for the proposal pursuant to Section 14 of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules
and regulations promulgated thereunder if such shareholder were engaged in such
a solicitation; and (f) a representation that such shareholder intends to appear
in person or by proxy at the annual meeting of shareholders to bring such
business before the meeting.

No business shall be conducted at the annual meeting of shareholders except
business brought before the annual meeting of shareholders in accordance with
the procedures set forth in this Section 9, provided however, that once business
has been properly brought before the annual meeting of shareholders in
accordance with such procedures, nothing in this Section 9 shall be deemed to
preclude discussion by any shareholder of any such business. If the Chairman of
an annual meeting of shareholders determines that business was not properly
brought before the annual meeting of shareholders in accordance with


                                        4

<PAGE>   5




the foregoing procedures, the Chairman shall declare to the meeting that the
business was not properly brought before the meeting and such business shall not
be transacted. When a meeting is adjourned to another time or place, notice of
the adjourned meeting need not be given if the time and place thereof are
announced at the meeting at which the adjournment is taken, unless the
adjournment is for more than 30 days, or unless after the adjournment a new
record date is fixed for the adjourned meeting, in which case notice of the
adjourned meeting shall be given to each shareholder of record entitled to vote
at the meeting. At such adjourned meeting at which a quorum is present or
represented, any business may be transacted which might have been transacted at
the original meeting as originally notified.


                                   ARTICLE III

                                    DIRECTORS

SECTION 1. POWERS. The business of the Corporation shall be managed by or under
the direction of its Board of Directors, which may exercise all such powers of
the Corporation and do all such lawful acts and things which are not by statute
or by the Corporation's certificate of incorporation or by these bylaws directed
or required to be exercised or done by the shareholders.

SECTION 2. LOCATION OF MEETINGS. The Board of Directors of the Corporation may
hold meetings, both regular and special, either within or without the State of
Delaware.

SECTION 3. ORGANIZATION MEETING OF BOARD. The first meeting of each newly
elected Board of Directors shall be held at the place of holding the annual
meeting of shareholders, and immediately following the same, for the purpose of
electing officers and transacting any other business properly brought before it,
provided that the organization meeting in any year may be held at a different
time and place than that herein provided by a consent of a majority of the
directors of such new board. No notice of such meeting shall be necessary to the
newly elected directors in order legally to constitute the meeting, provided a
quorum shall be present, unless said meeting is not held at the place of holding
and immediately following the annual meeting of shareholders.

SECTION 4. REGULAR MEETINGS OF BOARD. Regular meetings of the Board of Directors
may be held without notice at such time and at such place as shall from time to
time be determined by the board.

SECTION 5. SPECIAL MEETINGS OF BOARD. Special meetings of the Board of Directors
may be called by the Chairman of the Board of Directors, or, during the absence
or disability of the Chairman or while that office is vacant, by the President
on one (1) day's notice to each director; and special meetings shall be called
by the President or Secretary on like notice on the written request of five or
more directors.





                                       5

<PAGE>   6



SECTION 6. QUORUM AND REQUIRED VOTE. At all meetings of the Board of Directors a
majority of the total number of directors shall constitute a quorum for the
transaction of business, and the act of a majority of the directors present at
any meeting at which there is a quorum shall be the act of the Board of
Directors, except as may be otherwise specifically provided by statute or by the
Corporation's certificate of incorporation. If a quorum is not present at any
meeting of the Board of Directors, the directors present thereat may adjourn the
meeting from time to time, without notice other than announcement at the
meeting, until a quorum is present.

SECTION 7. CONSENT OF DIRECTORS IN LIEU OF MEETING. Unless otherwise restricted
by the Corporation's certificate of incorporation or these bylaws, any action
required or permitted to be taken at any meeting of the Board of Directors or of
any committee thereof may be taken without a meeting if all members of the board
or committee, as the case may be, consent thereto in writing, and the writing or
writings are filed with the minutes of proceedings of the Board of Directors or
committee.

SECTION 8.         COMMITTEES OF DIRECTORS.

(a) General Authority. The Board of Directors may, to the fullest extent
permitted by Section 141(c)(2) of the Delaware General Corporation Law as the
same may be hereinafter amended from time to time, designate one or more
committees, each committee to consist of one or more of the directors of the
Corporation. The board may designate one or more directors as alternate members
of any committee, who may replace any absent or disqualified member at any
meeting of the committee. In the absence or disqualification of a member of a
committee, the member or members present at any meeting and not disqualified
from voting, whether or not (s)he or they constitute a quorum, may unanimously
appoint another member of the Board of Directors to act at the meeting in the
place of any such absent or disqualified member. Any such committee, to the
extent provided in the resolution of the Board of Directors, or in these bylaws,
shall have and may exercise all the powers and authority of the Board of
Directors in the management of the business and affairs of the Corporation, and
may authorize the seal of the Corporation to be affixed to all papers which may
require it; but no such committee shall have the power or authority in reference
to the following matters (except as permitted by Delaware General Corporation
Law as the same may be hereinafter amended from time to time): (i) approving or
adopting, or recommending to the shareholders, any action or matter expressly
required to be submitted to shareholders for approval; or (ii) adopting,
amending or repealing any bylaw of the Corporation.

(b) Directors Committee. The Board of Directors may establish a Directors
Committee of the Board of Directors. The Directors Committee may: (i) nominate
candidates for election as directors of the Corporation at any meeting of
shareholders called for election of directors (an "Election Meeting"); (ii)
nominate candidates to fill any vacancies on the Board of Directors which may
exist from time to time; and (iii) have such other powers and authority as the
Board of Directors may delegate to it from time to time.


                                       6


<PAGE>   7





SECTION 9. COMMITTEE MINUTES. Each committee shall keep regular minutes of its
meetings and report the same to the Board of Directors when required.

SECTION 10. COMPENSATION OF DIRECTORS. Unless otherwise restricted by the
Corporation's certificate of incorporation, the Board of Directors shall have
authority to fix the compensation of directors. The directors may be paid their
expenses, if any, of attendance at each meeting of the Board of Directors and
may be paid a fixed sum for attendance at each meeting of the Board of Directors
or a stated salary as director. No such payment shall preclude any director from
serving the Corporation in any other capacity and receiving compensation
therefor. Members of special or standing committees may be allowed like
compensation for attending committee meetings.

SECTION 11. PARTICIPATION IN MEETING BY TELEPHONE OR OTHER ELECTRONIC MEDIA.
Unless otherwise restricted by the Corporation's certificate of incorporation or
these bylaws, members of the Board of Directors or any committee designated by
the Board of Directors may participate in a meeting of the Board of Directors or
committee by means of conference telephone, internet conferencing or similar
communications equipment by means of which all persons participating in the
meeting can hear or otherwise communicate with each other, and such
participation in a meeting shall constitute presence in person at such meeting.

SECTION 12. NOMINATIONS OF DIRECTOR CANDIDATES. Only persons who are nominated
in accordance with the following procedures shall be eligible for election as
directors of the Corporation, except as may be otherwise provided in the
Corporation's certificate of incorporation with respect to the right of
directors to fill any vacancies on the board, and the right of holders of
preferred stock of the Corporation to nominate and elect a specified number of
directors in certain circumstances. Nominations of persons for election to the
Board of Directors may be made at any annual meeting of shareholders, or at any
special meeting of shareholders called for the purpose of electing directors,
and shall be made:

(a)  by or at the direction of the Board of Directors (or any duly authorized
     committee thereof, including the Directors Committee); or

(b)  by any shareholder of the Corporation: (i) who is a shareholder of record
     on the date of the giving of the notice provided for in this Section 12 and
     on the record date for the determination of shareholders entitled to vote
     at such meeting; and (ii) who complies with the notice procedures set forth
     in this Section 12.

In addition to any other applicable requirements, for a nomination to be made by
a shareholder, such shareholder must have given timely notice thereof in proper
written form to the Secretary of the Corporation. To be timely, a shareholder's
notice to the Secretary



                                       7

<PAGE>   8


of the Corporation must be delivered to or mailed and received at the principal
executive offices of the Corporation:

(a)  in the case of an annual meeting of shareholders, not later than the close
     of business on the ninetieth (90th) day nor earlier than the close of
     business on the one hundred twentieth (120th) day prior to the first
     anniversary of the immediately preceding year's annual meeting of
     shareholders; provided, however, that in the event that the date of the
     annual meeting of shareholders is more than thirty (30) days before or more
     than sixty (60) days after such anniversary date, notice by the shareholder
     in order to be timely must be so received not earlier than the close of
     business on the one hundred twentieth (120th) day prior to such annual
     meeting and not later than the close of business on the later of the
     ninetieth (90th) day prior to such annual meeting or the tenth (10th) day
     following the day on which public announcement of the date of such meeting
     of shareholders was first made; and

(b)  in the case of a special meeting of shareholders called for the purpose of
     electing directors, not earlier than the close of business on the one
     hundred twentieth (120th) day prior to such special meeting and not later
     than the close of business on the later of the ninetieth (90th) day prior
     to such special meeting or the 10th day following the day on which public
     announcement is first made of the date of the special meeting and of the
     nominees proposed by the Board of Directors to be elected at such meeting.
     In no event shall the public announcement of an adjournment of a special
     meeting commence a new time period for the giving of a shareholder's notice
     as described above. For purpose of this Section 12, "public announcement"
     shall mean disclosure in a press release reported by the Dow Jones News
     Service, Associated Press or comparable national news service, or reported
     in a document publicly filed by the Corporation with the Securities and
     Exchange Commission pursuant to Section 13, 14 or 15(d) of the Exchange
     Act.

To be in proper written form, a shareholder's notice to the Secretary of the
Corporation must set forth:


(a)  as to each person whom the shareholder proposes to nominate for election as
     a director: (i) the name, age, business address and residence address of
     the person; (ii) the principal occupation or employment of the person;
     (iii) the class or series and number of shares of capital stock of the
     Corporation which are owned beneficially or of record by the person as of
     the record date for the meeting (if such date shall then have been made
     publicly available and shall have occurred) and as of the date of such
     notice; and (iv) any other information relating to the person that would be
     required to be disclosed in a proxy statement or other filings required to
     be made in connection with solicitations of proxies for election of
     directors pursuant to section 14 of the Exchange Act, and the rules and
     regulations promulgated thereunder; and


                                       8

<PAGE>   9


(b)  as to the shareholder giving the notice: (i) the name and address of such
     shareholder and beneficial owner, if any, as they appear on the
     Corporation's books; (ii) the class or series and number of shares of
     capital stock of the Corporation which are owned beneficially or of record
     by such shareholder as of the record date for the meeting (if such date
     shall then have been made publicly available and shall have occurred) and
     as of the date of such notice; (iii) a description of all arrangements or
     understandings between such shareholder and each proposed nominee and any
     other person or persons (including their names) pursuant to which the
     nominations are to be made by such shareholder; (iv) a representation that
     such shareholder intends to appear in person or by proxy at the meeting to
     nominate the persons named in its notice; and (v) any other information
     relating to such shareholder that would be required to be disclosed in a
     proxy statement or other filings required to be made in connection with
     solicitations of proxies for election of directors pursuant to Section 14
     of the Exchange Act and the rules and regulations promulgated thereunder.
     Such notice must be accompanied by the written consent to such nomination
     of each person proposed as a nominee and such person's written consent to
     serve as a director if elected.

No person shall be eligible for election as a director of the Corporation unless
nominated in accordance with the procedures set forth in this Section 12, or as
otherwise provided in the Corporation's certificate of incorporation with
respect to the right of directors to fill any vacancies on the board, and the
right of holders of preferred stock of the Corporation to nominate and elect a
specified number of directors in certain circumstances. If the Chairman of the
meeting determines that a nomination was not made in accordance with the
foregoing procedures, the Chairman shall declare to the meeting that the
nomination was defective and such defective nomination shall be disregarded.


                                   ARTICLE IV

                                     NOTICES

SECTION 1. NOTICE. Whenever any notice is required to be given to any director
or shareholder under any provision of statute or of the Corporation's
certificate of incorporation or of these bylaws, it shall not be construed to
mean personal notice, but such notice may be given in writing, by mail,
addressed to such director or shareholder, at his address as it appears on the
records of the Corporation, with postage thereon prepaid, and such notice shall
be deemed to be given at the time when the same shall be deposited in the United
States mail. Notice to directors may also be given orally in person or by
electronic mail to the electronic mail address, if any, provided by such
director, telegram, telex, radiogram or cablegram, and such notice shall be
deemed to be given when the recipient receives the notice personally, by
telephone or internet or when the notice, addressed as provided above, has been
delivered to the company, or to the equipment transmitting such notice.










                                       9


<PAGE>   10




SECTION 2. WAIVER OF NOTICE. Whenever any notice is required to be given under
any provision of statute or of the Corporation's certificate of incorporation or
of these bylaws, a written waiver thereof, signed (manually or electronically by
electronic mail) by the person or persons entitled to said notice, whether
before or after the time stated therein, shall be deemed equivalent to notice.
Neither the business to be transacted at, nor the purpose of, any regular or
special meeting of the shareholders, directors, or members of a committee of
directors need be specified in any written waiver of notice unless so required
by the Corporation's certificate of incorporation or these bylaws. Attendance of
a person at a meeting shall constitute a waiver of notice of such meeting,
except when the person attends a meeting for the express purpose of objecting,
at the beginning of the meeting, to the transaction of any business because the
meeting is not lawfully called or convened.


                                    ARTICLE V

                                    OFFICERS

SECTION 1. SELECTION. The Board of Directors may appoint such officers and
agents as it shall deem necessary, who shall hold their offices for such terms
and shall exercise such powers and perform such duties as shall be determined
from time to time by or at the direction of the Board of Directors. The officers
so appointed may include a Chairman of the Board, President, one or more Vice
Chairmen, one or more Vice Presidents (including Executive, Senior, First,
regular and Assistant Vice Presidents), a Secretary and a Treasurer, and one or
more lesser officers as may be deemed appropriate. The Chief Executive Officer
also may appoint officers of the level of Senior Vice President and below and
such agents as the Chief Executive Officer shall deem necessary, at any time,
which officers and agents shall hold their offices for such terms and shall
exercise such powers and perform such duties as shall be determined from time to
time by or at the direction of the Board of Directors or the Chief Executive
Officer. Any number of offices may be held by the same person, unless the
Certificate of Incorporation otherwise provides.

SECTION 2. COMPENSATION. The salaries of all executive officers of the
Corporation shall be fixed by the Board of Directors or by an authorized
committee of the Board of Directors.

SECTION 3. TERM, REMOVAL AND VACANCIES. Each officer of the Corporation shall
hold office until his or her successor is elected and qualified, or until his or
her earlier resignation or removal from office. Any officer elected or appointed
by the Board of Directors may be removed from office at any time, with or
without cause, by the affirmative vote of a majority of the Board of Directors.
Any officer also may be removed from office at any time by the Chief Executive
Officer. Any vacancy occurring in any office of the Corporation may be filled by
the Board of Directors or by the Chief Executive Officer.


                                       10

<PAGE>   11




SECTION 4. CHIEF EXECUTIVE OFFICER AND CHIEF OPERATING OFFICER.

(a)  Chief Executive Officer. At the first meeting of each newly-elected Board
     of Directors, the board shall designate the Chairman of the Board or
     President as the Chief Executive Officer of the Corporation; provided,
     however, that if a motion is not made and carried to change the
     designation, the designation shall be same as the designation for the
     preceding year; provided, further, that the designation of the Chief
     Executive Officer may be changed at any regular or special meeting of the
     Board of Directors. The Chief Executive Officer shall be responsible to the
     Board of Directors for the general supervision and management of the
     business and affairs of the Corporation. The Chairman of the Board or
     President who is not the Chief Executive Officer shall be subject to the
     authority of the Chief Executive Officer, but shall exercise all of the
     powers and discharge all of the duties of the Chief Executive Officer,
     during the absence or disability of the Chief Executive Officer.

(b)  Chief Operating Officer. At any meeting of the Board of Directors, the
     board may designate a Chief Operating Officer of the Corporation. The Chief
     Operating Officer shall perform all duties incident to that office and such
     other duties as may be delegated to him or her by or at the direction of
     the Board of Directors, the Executive Committee of the Board, or the Chief
     Executive Officer.

SECTION 5. CHAIRMAN OF THE BOARD OF DIRECTORS. The Chairman of the Board of
Directors shall be selected by, and from among the membership of, the Board of
Directors. He or she shall preside at all meetings of the shareholders and of
the Board of Directors. He or she shall perform all other duties and functions
incident to the office of Chairman of the Board of Directors, and such other
duties and functions as may be assigned to him or her from time to time by the
Board of Directors. He or she shall be, ex officio, a member of all standing
committees except the Select Compensation Committee and the Audit and Legal
Committee. Except where by law the signature of the President of this
Corporation is required, the Chairman of the Board of Directors shall possess
the same power and authority as the President to sign all certificates,
contracts, instruments, papers and documents of every conceivable kind and
character whatsoever, in the name and on behalf of this Corporation, which may
be authorized by the Board of Directors. During the absence or disability of the
President, the Chairman of the Board of Directors shall exercise all of the
powers and discharge all of the duties of the President.

SECTION 6. PRESIDENT. The President shall be selected by the Board of Directors.
During the absence or disability of the Chairman of the Board of Directors, or
while such office is vacant, the President shall perform all duties and
functions, and while so acting shall have all of the powers and authority of the
Chairman of the Board of Directors. The President shall perform all duties
incident to the office of President, and such other duties as may be prescribed
by or at the direction of the Board of Directors, the Executive Committee of the
Board, or the Chief Executive Officer. The President shall be, ex officio, a
member of all standing committees except the Select Compensation Committee and
the Audit and Legal Committee.



                                       11

<PAGE>   12



SECTION 7. VICE CHAIRMEN. One or more Vice Chairmen (who need not be members of
the Board of Directors) may be selected by the Board of Directors. The Vice
Chairmen shall perform all duties incident to their office, and such other
duties as may be delegated to them by or at the direction of the Board of
Directors, any executive committee, or the Chief Executive Officer.

SECTION 8. SECRETARY. The Secretary or an Assistant Secretary, or, during their
absence or disability, a Secretary Pro Tem designated by the Board of Directors
or the Chief Executive Officer, shall attend all meetings of the Board of
Directors and all meetings of the shareholders, shall record all the proceedings
thereof in a book to be kept for that purpose, and shall perform like duties for
the standing committees when required. The Secretary shall give, or cause to be
given, all notices required by statute, bylaw or resolution, and shall perform
such other duties incident to his or her office or as may be prescribed by or at
the direction of the Board of Directors or the Chief Executive Officer. The
Secretary shall have custody of the corporate seal of the Corporation and the
Secretary and Assistant Secretaries shall have authority to affix the same to
any instrument when its use is required or appropriate.

SECTION 9. ASSISTANT SECRETARIES. The Assistant Secretary or Assistant
Secretaries shall, in the absence of the Secretary or in the event of his or her
inability or refusal to act, perform the duties and exercise the powers of the
Secretary, and shall perform such other duties and have such other powers
incident to his or her office or as may be prescribed from time to time by or at
the direction of the Board of Directors or the Chief Executive Officer.

SECTION 10. TREASURER. The Treasurer shall have the custody of the corporate
funds and securities and shall keep full and accurate accounts of receipts and
disbursements in books belonging to the Corporation and shall deposit all moneys
and other valuable effects in the name and to the credit of the Corporation in
such depositories as may be designated by or at the direction of the Board of
Directors. The Treasurer shall disburse the funds of the Corporation as may be
ordered by or at the direction of the Board of Directors, taking proper vouchers
for such disbursements, and shall render to the Chief Executive Officer and the
Board of Directors, at its regular meetings, or when the Board of Directors so
requires, an account of all his or her transactions as Treasurer and of the
financial condition of the Corporation. If required by the Board of Directors,
the Treasurer shall deliver to the Corporation, and shall keep in force, a bond,
in such form and amount, and with such surety or sureties as shall be
satisfactory to the Board of Directors, for the faithful performance of the
duties of his or her office and for the restoration to the Corporation, in case
of his or her death, resignation, retirement or removal from office, of all
books, papers, vouchers, money and other property of whatever kind in his or her
possession or under his or her control belonging to the Corporation.

SECTION 11. ASSISTANT TREASURERS. The Assistant Treasurer or Assistant
Treasurers shall, in the absence of the Treasurer or in the event of his or her
inability or refusal to act, perform the duties and exercise the powers of the
Treasurer, and shall

                                       12

<PAGE>   13


perform such other duties and have such other powers incident to his or her
office or as may be prescribed from time to time by or at the direction of the
Board of Directors or the Chief Executive Officer.

SECTION 12.  INDEMNIFICATION AND INSURANCE.

(a)  To the fullest extent permitted by these bylaws and by applicable law and
     regulation, as presently existing or hereafter amended, the Corporation
     shall indemnify any person who is or was a party or is threatened to be
     made a party to any threatened, pending or completed action, suit or
     proceeding, whether civil, criminal, administrative or investigative (other
     than an action by or in the right of the Corporation), by reason of the
     fact that he or she is or was a director, officer or employee of the
     Corporation or is or was serving at the request of the Corporation as a
     director, officer, employee or agent of another corporation, partnership,
     joint venture, trust or other enterprise, against expenses (including
     attorneys' fees), judgments, fines and amounts paid in settlement actually
     and reasonably incurred by him or her in connection with such action, suit
     or proceeding, if he or she acted in good faith and in a manner he or she
     reasonably believed to be in or not opposed to the best interests of the
     Corporation, and, with respect to any criminal action or proceeding, had no
     reasonable cause to believe his or her conduct was unlawful. Any person who
     is or was an agent of the Corporation may be indemnified to the same extent
     as provided above. In addition, in the event any such action, suit or
     proceeding is threatened or instituted against a spouse to whom a director
     or officer is legally married at the time the director or officer is
     covered under the indemnification provided herein, which action, suit or
     proceeding arises solely out of his or her status as the spouse of a
     director or officer, including, without limitation, an action, suit or
     proceeding that seeks damages recoverable from marital community property
     of the director or officer and his or her spouse, property owned jointly by
     them or property purported to have been transferred from the director or
     officer to his or her spouse, then the spouse of the director or officer
     shall be indemnified to the same extent as provided above. The termination
     of any action, suit or proceeding by judgment, order, settlement,
     conviction or upon a plea of nolo contendere or its equivalent, shall not,
     of itself, create a presumption that the person did not act in good faith
     and in a manner which he or she reasonably believed to be in or not opposed
     to the best interests of the Corporation, and, with respect to any criminal
     action or proceeding, raise any inference that he or she had reasonable
     cause to believe that his or her conduct was unlawful.

(b)  To the fullest extent permitted by these bylaws and by applicable law and
     regulation, as presently existing or hereafter amended, the Corporation
     shall indemnify any person who is or was a party or is threatened to be
     made a party to any threatened, pending or completed action or suit by or
     in the right of the Corporation to procure a judgment in its favor, by
     reason of the fact that he or she is or was a director or officer or
     employee of the Corporation or is or was serving at the request of the
     Corporation as a director, officer, employee or agent of another
     corporation, partnership, joint venture, trust or other enterprise, against
     expenses

                                      13
<PAGE>   14



     (including attorneys' fees) actually and reasonably incurred by him or her
     in connection with the defense or settlement of such action or suit, if he
     or she acted in good faith and in a manner he or she reasonably believed to
     be in or not opposed to the best interests of the Corporation, and except
     that no indemnification shall be made in respect of any claim, issue or
     matter as to which such person shall have been adjudged to be liable to the
     Corporation unless and only to the extent that the Court of Chancery or the
     court in which such action or suit was brought shall determine upon
     application that, despite the adjudication of liability but in view of all
     the circumstances of the case, such person is fairly and reasonably
     entitled to indemnity for such expenses which the Court of Chancery or such
     other court shall deem proper. Any person who is or was an agent of the
     Corporation may be indemnified to the same extent as provided above. In
     addition, in the event any such action or suit is threatened or instituted
     against a spouse to whom a director or officer is legally married at the
     time the director or officer is covered under the indemnification provided
     herein, which action or suit arises solely out of his or her status as the
     spouse of a director or officer, including, without limitation, an action
     or suit that seeks damages recoverable from marital community property of
     the director or officer and his or her spouse, property owned jointly by
     them or property purported to have been transferred from the director or
     officer to his or her spouse, then the spouse of the director or officer
     shall be indemnified to the same extent as provided above.

(c)  To the extent that a present or former director, officer, spouse of the
     director or officer, employee or agent of the Corporation has been
     successful on the merits or otherwise in defense of any action, suit or
     proceeding referred to in subsections (a) and (b) of this Section, or in
     defense of any claim, issue or matter therein, he or she shall be
     indemnified against expenses (including attorneys' fees) actually and
     reasonably incurred by him or her in connection therewith.

(d)  Any indemnification under subsections (a) and (b) of this Section (unless
     ordered by a court) shall be made by the Corporation only as authorized in
     the specific case upon a determination that indemnification of the present
     or former director, officer, spouse of the director or officer, employee or
     agent is proper in the circumstances because the person has met the
     applicable standard of conduct set forth in subsections (a) and (b) of this
     Section. Such determination shall be made with respect to a person who is a
     director or officer or the spouse of a director or officer at the time of
     the determination (i) by a majority vote of directors who were not parties
     to the action, suit or proceeding, even if they constitute less than a
     quorum, (ii) by a committee of such disinterested directors designated by a
     majority vote of such directors, even if they constitute less than a
     quorum, (iii) if there are no such disinterested directors, or if a
     majority of such disinterested directors so directs, in a written opinion
     by independent legal counsel chosen by the entire Board of Directors,
     subject to the reasonable satisfaction of the party seeking
     indemnification, or (iv) by the shareholders. Such determination may be
     made with respect to any other person seeking indemnification under
     subsections (a) and (b)


                                       14

<PAGE>   15


     of this Section by the Corporation's Chairman, Chief Executive Officer,
     President, Vice Chairman or General Counsel, or by their designees.

(e)  Expenses (including attorney's fees) incurred by an officer, director or
     spouse of an officer or director in defending any civil, criminal,
     administrative or investigative action, suit or proceeding may be paid by
     the Corporation in advance of the final disposition of such action, suit or
     proceeding upon receipt of an undertaking by or on behalf of the director,
     officer or spouse to repay such amount if it shall ultimately be determined
     that he or she is not entitled to be indemnified by the Corporation as
     authorized in this Section. Such expenses (including attorneys' fees)
     incurred by former directors or officers, their spouses or other employees
     and agents may be so paid upon such terms and conditions, if any, as the
     Corporation deems appropriate.

(f)  The indemnification and advancement of expenses provided by, or granted
     pursuant to, the other subsections of this Section shall not be deemed
     exclusive of any other rights to which those seeking indemnification or
     advancement of expenses may be entitled under any bylaw, agreement, vote of
     shareholders or disinterested directors or otherwise, both as to action in
     his or her official capacity and as to action in another capacity while
     holding such office.

(g)  The Corporation may purchase and maintain insurance on behalf of any person
     who is or was a director, officer, spouse of a director or officer,
     employee or agent of the Corporation, or is or was serving at the request
     of the Corporation as a director, officer, employee or agent of another
     corporation, partnership, joint venture, trust or other enterprise against
     any liability asserted against such person and incurred by such person in
     any such capacity, or arising out of his or her status as such, whether or
     not the Corporation would have the power to indemnify such person against
     such liability under the provisions of this Section.

(h)  For the purposes of this Section, references to "the Corporation" include,
     in addition to the resulting or surviving corporation, any constituent
     corporation (including any constituent of a constituent) absorbed in a
     consolidation or merger which, if its separate existence had continued,
     would have had the power and authority to indemnify its directors,
     officers, spouses of directors or officers, and employees or agents, so
     that any person who is or was a director, officer, spouse of a director or
     officer, employee or agent of such constituent corporation, or is or was
     serving at the request of such constituent corporation as a director,
     officer, employee, or agent of another corporation, partnership, joint
     venture, trust or other enterprise, shall stand in the same position under
     the provisions of this Section with respect to the resulting or surviving
     corporation as he or she would have with respect to such constituent
     corporation if its separate existence had continued.

(i)  For purposes of this Section, references to "other enterprises" shall
     include employee benefit plans; references to "fines" shall include any
     excise taxes assessed on a person with respect to an employee benefit plan;
     and references to

                                       15


<PAGE>   16



     "serving at the request of the Corporation" shall include any service as a
     director, officer, employee or agent of the Corporation which imposes
     duties on, or involves services by, such director, officer, employee, or
     agent with respect to an employee benefit plan, its participants, or
     beneficiaries; and a person who acted in good faith and in a manner he or
     she reasonably believed to be in the interest of the participants and
     beneficiaries of an employee benefit plan shall be deemed to have acted in
     a manner "not opposed to the best interests of the Corporation" as referred
     to in this Section.

(j)  The indemnification and advancement of expenses provided by, or granted
     pursuant to, this Section shall, unless otherwise provided when authorized
     or ratified, continue as to a person who has ceased to be a director,
     officer, employee or agent, and with respect to any spouse of a director or
     officer, shall continue following the time the director or officer spouse
     ceases to be a director or officer even if the marriage of the individuals
     terminates prior to the end of the period of coverage, and shall inure to
     the benefit of the heirs, executors and administrators of such a person.

(k)  The Court of Chancery shall have exclusive jurisdiction to hear and
     determine all actions for advancement of expenses or indemnification
     brought under this Section or under any agreement, vote of shareholders or
     disinterested directors, or otherwise. The Court of Chancery may summarily
     determine the Corporation's obligation to advance expenses (including
     attorneys' fees).

SECTION 13. OFFICER APPOINTED PURSUANT TO MERGER AGREEMENT. During the period in
which the Employment Agreement, entered into as of February 20, 1992, between
the Corporation and Mr. Eugene A. Miller (the "Employment Agreement") is in
effect, any modification, amendment or failure to honor the terms of the
Employment Agreement shall require the affirmative vote of 75% of the members of
the entire Board of Directors.


                                   ARTICLE VI

                               STOCK AND TRANSFERS

SECTION 1. CERTIFICATES OF STOCK. Shares of the Corporation's stock may be
certificated or uncertificated, as provided under Delaware law at any time. All
holdings of shares of stock of the Corporation shall be numbered and shall be
entered into the books of the Corporation as they are issued. All certificated
shares of stock shall exhibit the holder's name and number of shares and shall
be signed by or in the name of the Corporation by the Chairman or a Vice
Chairman of the Board of Directors, or by the Chief Executive Officer, President
or a Vice President and the Treasurer or an Assistant Treasurer, or by the
Secretary or an Assistant Secretary of the Corporation. If the Corporation shall
be authorized to issue more than one class of stock or more than one

                                       16


<PAGE>   17



series of any class, the designations, preferences and relative, participating,
optional or other special rights of each class of stock or series thereof, and
the qualifications, limitations or restrictions of such preferences and/or
rights shall be set forth in full or summarized on the face or back of the
certificate which the Corporation may issue to represent such class or series of
stock or, in the case of uncertificated shares, contained in the notice sent
pursuant to Delaware law, provided that, except as otherwise provided in Section
202 of the General Corporation Law of Delaware, in lieu of the foregoing
requirements, there may be set forth on the face or back of the certificate
which the Corporation may issue to represent such class or series of stock or,
in the case of uncertificated shares, contained in the notice sent pursuant to
Delaware law, a statement that the Corporation will furnish without charge to
each shareholder who so requests the designations, preferences and relative,
participating, optional or other special rights of each class of stock or series
thereof, and the qualifications, limitations or restrictions of such preferences
and/or rights. Any of or all of the signatures on the certificate may be a
facsimile. In case any officer, transfer agent or registrar who has signed or
whose facsimile signature has been placed upon a certificate shall have ceased
to be such officer, transfer agent or registrar before such certificate is
issued, it may be issued by the Corporation with the same effect as if such
person were such officer, transfer agent or registrar at the date of issue.

SECTION 2. LOST CERTIFICATES. The Board of Directors may direct a new
certificate to be issued in the place of any certificate theretofore issued by
the Corporation, alleged to have been lost, stolen or destroyed, upon the making
of an affidavit of that fact by the person claiming the certificate of stock to
be lost, stolen or destroyed. When authorizing the issuance of a new certificate
the Board of Directors may, in its discretion and as a condition present to the
issuance thereof, require the owner of such lost, stolen or destroyed
certificate, or his legal representative, to advertise the same in such manner
as it shall require and/or to give the Corporation a bond in such sum as it may
direct as indemnity against any claim that may be made against it with respect
to the certificate alleged to have been lost, stolen or destroyed.

SECTION 3. TRANSFERS OF STOCK. The Corporation shall make transfers of stock on
the Corporation's books only by the record holder of such stock or by his or her
duly authorized agent or attorney-in-fact, and, in the case of stock represented
by a certificate, upon surrender to the Corporation or the transfer agent of the
Corporation of a certificate for shares, duly endorsed or accompanied by proper
evidence of succession, assignment or authority to transfer.

SECTION 4. FIXING RECORD DATE. In order that the Corporation may determine the
shareholders entitled to notice of or to vote at any meeting of shareholders or
any adjournment thereof, or entitled to express consent to corporate action in
writing without a meeting, or entitled to receive payment of any dividend or
other distribution or allotment of any rights, or entitled to exercise any
rights in respect of any change, conversion or exchange of stock or for the
purpose of any other lawful action, the Board of Directors may fix, in advance,
a record date, which shall not be more than sixty (60) nor less than ten (10)
days before the date of such meeting, nor more than sixty (60) days prior to any
other

                                       17

<PAGE>   18



action. A determination of shareholders of record entitled to notice of or to
vote at a meeting of shareholders shall apply to any adjournment of the meeting;
provided, however, that the Board of Directors may fix a new record date for the
adjourned meeting.

SECTION 5. REGISTERED SHAREHOLDERS. The Corporation shall have the right to
treat the person registered on its books as the owner of shares as the absolute
owner thereof, and shall not be bound to recognize any equitable or other claim
to or interest in such share or shares on the part of any other person, whether
or not it shall have express or other notice thereof, except as otherwise
provided by the laws of Delaware.

                                   ARTICLE VII

                               GENERAL PROVISIONS

SECTION 1. DIVIDENDS. The Board of Directors, subject to any restrictions
contained in its Certificate of Incorporation, may declare and pay any dividends
upon the shares of its capital stock either (a) out of surplus as defined in and
computed in accordance with the provisions of the governing statute, or (b) in
case there shall be no such surplus, out of its net profits for the fiscal year
in which the dividend is declared and/or the preceding fiscal year. Dividends
may be paid in cash, in property, or in shares of the Corporation's capital
stock, subject to the provisions of the statute and of the Corporation's
certificate of incorporation.

SECTION 2. RESERVES. The Board of Directors shall have power and authority to
set apart, out of any funds available for dividends, such reserve or reserves,
for any proper purpose, as the board in its discretion shall approve, and the
board shall have the power and authority to abolish any reserve created by the
board.

SECTION 3. VOTING SECURITIES. Unless otherwise directed by the Board of
Directors, the Chairman of the Board, the Chief Executive Officer or the
President, or, in the case of their absence or inability to act, the Vice
Chairmen or Vice Presidents, in order of their seniority, shall have full power
and authority on behalf of the Corporation to attend and to act and to vote, or
to execute in the name or on behalf of the Corporation, a proxy authorizing an
agent or attorney-in-fact for the Corporation to attend and vote at any meetings
of security holders of Corporations in which the Corporation may hold
securities, and at such meetings (s)he or his or her duly authorized agent or
attorney-in-fact shall possess and may exercise any and all rights and powers
incident to the ownership of such securities and which, as the owner thereof,
the Corporation might have possessed and exercised if present. The Board of
Directors by resolution from time to time may confer like power upon any other
person or persons.

SECTION 4. CHECKS. All checks, drafts and orders for the payment of money shall
be signed in the name of the Corporation in such manner and by such officer or
officers or

                                       18

<PAGE>   19



such other person or persons as the Board of Directors shall from time to time
designate for that purpose.

SECTION 5. CONTRACTS, CONVEYANCES, ETC. When the execution of any contract,
conveyance or other instruments has been authorized without specification of the
executing officers, the Chairman of the Board, Chief Executive Officer,
President, any Vice Chairman or any Vice President, and the Secretary or any
Assistant Secretary, may execute the same in the name and on behalf of this
Corporation and may affix the corporate seal thereto. The Board of Directors
shall have power to designate the officers and agents of this Corporation or any
of its subsidiaries or affiliates who shall have authority to execute any
instrument on behalf of this Corporation.

SECTION 6. FISCAL YEAR. The fiscal year of the Corporation shall be fixed by
resolution of the Board of Directors.

SECTION 7. SEAL. The corporate seal shall have inscribed thereon the name of the
Corporation and the words "Corporate Seal" and "Delaware". The seal may be used
by causing it or a facsimile thereof to be impressed or affixed or otherwise
reproduced.

SECTION 8. MICHIGAN CONTROL SHARE STATUTE. Pursuant to Section 794 of the
Michigan Business Corporation Act ("MBCA"), Chapter 7B of the MBCA shall not
apply to the Corporation or control share acquisitions (as such term is defined
in Section 791 of the MBCA) of the shares of the Corporation's capital stock.


                                  ARTICLE VIII

                                   AMENDMENTS

SECTION 1. AMENDMENT BY REGULAR VOTE. These bylaws may be altered, amended or
repealed or new bylaws may be adopted by the shareholders or by the Board of
Directors, when such power is conferred upon the Board of Directors by the
Corporation's certificate of incorporation, at any regular meeting of the
shareholders or of the Board of Directors, or at any special meeting of the
shareholders or of the Board of Directors if notice of such alteration,
amendment, repeal or adoption of new bylaws is contained in the notice of such
special meeting.

SECTION 2. AMENDMENT BY 75% VOTE. The affirmative vote of 75% of the total Board
of Directors is required to alter, amend, repeal, add to or otherwise change the
effects of Article III, Section 8(b); Article V, Section 13; or this Article
VIII, Section 2 of the Corporation's bylaws.




                                       19

<PAGE>   1
                                                                   EXHIBIT 10.15



                              AMENDED AND RESTATED
                              COMERICA INCORPORATED
                          1997 LONG-TERM INCENTIVE PLAN

SECTION 1.  PURPOSE.

The purpose of Comerica's Long-Term Incentive Plan is to align the interests of
employees of the Corporation selected to receive awards with those of
shareholders by rewarding long term decision-making and actions for the
betterment of the Corporation. Accordingly, eligible individuals may receive
Stock Options, Stock Appreciation Rights, Restricted Stock, Performance Awards
and Other Stock-Based Awards. Ownership of the Corporation's stock assists in
the attraction and retention of qualified employees, and provides them with
additional incentive to devote their best efforts to pursue and sustain the
Corporation's superior long-term performance. This enhances the value of the
Corporation for the benefit of its shareholders.

SECTION 2.  DEFINITIONS.

a.      "Affiliate" means (i) any entity that is controlled by the Corporation,
        whether directly or indirectly, and (ii) any entity in which the
        Corporation has a significant equity interest, as determined by the
        Committee.

b.      "Agreement" means a written agreement, in a form approved by the
        Committee, which sets forth the terms and conditions of an Award.
        Agreements shall be subject to the express terms and conditions set
        forth herein, and to such other terms and conditions not inconsistent
        with the Plan as the Committee shall deem appropriate.

c.      "Award" means an Option, a Stock Appreciation Right, a Restricted Stock
        Award, a Performance Award or an Other Stock-Based Award pursuant to the
        Plan. Each Award shall be evidenced by an Agreement.

d.      "Award Recipient" means an Eligible Individual who has received an Award
        under the Plan.

e.      "Beneficiary" means any person(s) designated by an Award Recipient on a
        beneficiary designation form, or any person(s) entitled to receive any
        amounts owing to such Award Recipient under this Plan upon his or her
        death by reason of having been named in the Award Recipient's will or
        trust agreement or having qualified as a taker of the Award Recipient's
        property under the laws of intestacy. If an Award Recipient authorizes
        any person, in writing, to exercise such individual's Options or SARs
        following the Award Recipient's death, the term "Beneficiary" shall
        include any person in whose favor such Options or SARs are exercised by
        the person authorized to exercise the Options or SARs.

f.      "Board" means the Board of Directors of Comerica Incorporated.


<PAGE>   2




g.      "Change of Control" shall have the meaning set forth in Exhibit A to
        this Plan.

h.      "Code" means the Internal Revenue Code of 1986, as amended.

i.      "Committee" means the committee appointed by the Board to administer the
        Plan as provided herein. Unless otherwise determined by the Board, the
        Compensation Committee of the Board shall be the Committee.

j.      "Corporation" means Comerica Incorporated, a Delaware corporation, and
        its Affiliates.

k.      "Disabled" or "Disability" means "Totally Disabled" within the meaning
        of such term as set forth in the Long-Term Disability Plan of Comerica
        Incorporated (the provisions of which are incorporated herein by
        reference), or as the Committee shall determine based on information
        provided to it. However, with respect to the rules relating to Incentive
        Stock Options, the term "Disabled" shall mean disabled as that term is
        utilized in Sections 422 and 22(e)(3) of the Code, or any successor Code
        provisions relating to ISOs.

l.      "Eligible Individual" means any employee of the Corporation or any
        Affiliate who the Committee determines to be an Eligible Individual.
        Notwithstanding the foregoing, an Eligible Individual for purposes of
        receipt of the grant of an ISO shall be limited to those individuals who
        are eligible to receive ISOs under rules set forth in the Code and
        applicable regulations.

m.      "Exchange Act" means the Securities Exchange Act of 1934, as amended.

n.      "Fair Market Value" means the closing price of a Share on the New York
        Stock Exchange as reported on the Composite Tape; if, however, there is
        no trading of Shares on the date in question, then the closing price of
        the Shares as so reported, on the last preceding date on which there was
        trading shall instead be used to determine Fair Market Value. If Fair
        Market Value for any date in question cannot be determined as provided
        above, Fair Market Value shall be determined by the Committee by
        whatever method or means the members, in the good faith exercise of
        their discretion, at that time shall deem appropriate.

o.      "Incentive Stock Option" or "ISO" means an Option granted pursuant to
        the Plan that meets the requirements of Section 422 of the Code, or any
        successor provision, and that is intended by the Committee to constitute
        an ISO.

p.      "Nonqualified Stock Option" or "NQSO" means an Option granted pursuant
        to the Plan that is not intended to be an Incentive Stock Option.

q.      "Option" means a Nonqualified Stock Option or an Incentive Stock Option.

r.      "Other Stock-Based Award" means any right granted under Section 6(E) of
        the



<PAGE>   3

s.      Plan. "Performance Award" means any Award made pursuant to Section 6(D)
        of the Plan.

t.      "Performance Measures" means, with respect to each Award, the criteria
        and objectives, determined by the Committee, which must be met during
        the applicable Performance Period or Restriction Period, as the case may
        be, as a condition of the holder's vesting of, and receipt of payment
        with respect to, or retention of, such Award. Such criteria and
        objectives may include, but shall not be limited to, return on
        investments, cumulative earnings per share, or return on shareholders'
        equity. The Performance Measures pertinent to any Award shall be
        established at the time of the making of such Award and shall be set
        forth in the Agreement covering such Award, but may be revised by the
        Committee thereafter if and whenever its members determine that, in
        light of events occurring or circumstances arising after the date such
        Award is made, such revision is necessary or appropriate to afford the
        recipient benefits substantially similar to those originally intended
        with respect to such Award.

u.      "Performance Period" means the period designated by the Committee
        during which the Performance Measures applicable to an Award shall be
        measured. The Performance Period shall be established on or before the
        time of the making of the Award, and the length of any Performance
        Period shall be within the discretion of the Committee.

v.      "Plan" means the Amended and Restated Comerica Incorporated 1997
        Long-Term Incentive Plan.

w.      "Restriction Period" means the period designated by the Committee
        during which Shares of Restricted Stock remain forfeitable.

x.      "Restricted Stock Award" means an award of Shares pursuant to Section
        6(C) of the Plan subject to such restrictions as may be imposed by the
        Committee. Shares of restricted stock shall constitute issued and
        outstanding Shares for all corporate purposes.

y.      "Retirement" means retirement in accordance with the policies of the
        Corporation or Affiliate which employs the Award Recipient.

z.      "Shares" means shares of Common Stock, $5.00 par value, of the
        Corporation or such other securities or property as may become subject
        to Awards pursuant to an adjustment made under Section 8 of the Plan.




<PAGE>   4



aa.     "Stock Appreciation Right" or "SAR" means a right granted under Section
        6(B) of the Plan.

bb.     "Tax Withholding Date" shall mean the earliest date the obligation to
        withhold tax with respect to an Award arises.

SECTION 3.  STOCK SUBJECT TO THE PLAN.

Shares which may be issued pursuant to Awards under the Plan may be either
authorized and unissued Shares, or authorized and issued Shares held in the
Corporation's Treasury, Shares purchased in the open market or in private
transactions or any combination of the foregoing. Subject to adjustment as
provided in Section 8, as of the first day of each calendar year during which
the Plan remains in effect, there shall be reserved for issuance for the purpose
of Awards under the Plan that number of Shares which equals 1.6 percent of the
Shares that were outstanding (including, for this purpose, any treasury shares)
as of the close of business on the preceding December 31st. Not more than 49% of
the Shares available for Awards each calendar year may be utilized for Awards
other than Options and not more than 15% of the Shares available for Awards each
calendar year may be utilized for Restricted Stock Awards. Shares reserved for
issuance in any calendar year may only be utilized in connection with Awards
made during the year in which they first become available, and may not be
carried forward and utilized for the purpose of making Awards in future years.
However, Shares covered by Awards which are canceled or forfeited may be
reutilized to make Awards. Not more than 2,000,000 Shares (subject to adjustment
as provided in Section 8) shall be available for issuance pursuant to the
exercise of Incentive Stock Options. The maximum number of Shares which may
become subject to Awards to any Eligible Individual during any calendar year
shall be the lesser of (i) 10% of the Shares available for Awards during such
calendar year, or (ii) 200,000 Shares.

SECTION 4.  ADMINISTRATION.

The Plan shall be administered by the Committee. In addition to any implied
powers and duties that may be needed to carry out the provisions of the Plan,
the Committee shall have all the powers vested in it by the terms of the Plan,
including exclusive authority to select Eligible Individuals, to make Awards, to
determine the type, size, terms and timing of Awards (which need not be
uniform), to accelerate the vesting of awards in extraordinary circumstances,
including the occurrence of a Change of Control of the Corporation or the
termination of an Award Recipient's employment, to permit or prohibit the
transfer of Awards, and to prescribe the form of the Agreements governing
Awards.

The Committee may cancel all or any portion of any Award, whether or not vested
or deferred, as set forth below. Upon cancellation, the Award Recipient shall
forfeit the Award and any benefits attributable to such canceled Award or
portion thereof. The Committee may cancel an Award if, in its sole discretion,
the Committee determines in good faith that the Award Recipient has done any of
the following: (i) committed a felony;


<PAGE>   5



(ii) committed fraud; (iii) embezzled; (iv) disclosed confidential information
or trade secrets; (v) was terminated for cause; (vi) engaged in any activity in
competition with the business of the Corporation or any subsidiary or affiliate
of the Corporation; or (vii) engaged in conduct that adversely affected the
Corporation. The Executive Vice President - Corporate Staff of the Corporation,
or such other person designated from time to time by the Chief Executive Officer
of the Corporation (the "Delegate"), shall have the power and authority to
suspend all or any portion of any Award if the Delegate makes in good faith the
determination described in the preceding sentence. Any such suspension of an
Award shall remain in effect until the suspension shall be presented to and
acted on by the Committee at its next meeting. This paragraph shall have no
application for a two year period following a Change of Control of the
Corporation.

The Committee may interpret the Plan and the Agreements entered into pursuant to
the Plan, establish, amend and rescind rules and regulations relating to the
Plan, make any other determinations it believes necessary or advisable in
connection with the administration of the Plan, and correct any defect, supply
any omission or reconcile any inconsistency in the Plan or in any Agreement in
the manner and to the extent the Committee deems appropriate.

Determinations of the Committee shall be made by a majority vote of its members
at a meeting at which a quorum is present or pursuant to a unanimous written
consent of its members. A majority of the members of the Committee shall
constitute a quorum. All Committee determinations shall be final, conclusive and
binding on the Corporation, any Award Recipient, Beneficiary or other interested
party.

The Committee may authorize any one or more of its members, or any officer of
the Corporation, to execute and deliver documents on behalf of the Committee. No
member of the Committee shall be liable for any action or omission in connection
with the Plan, except for his or her own willful misconduct.

SECTION 5.  ELIGIBILITY.

Awards may only be made to Eligible Individuals. No member of the Committee
shall be eligible to receive an Award under the Plan.

SECTION 6.  AWARDS.

a.      Options. The Committee may grant Options to Eligible Individuals in
        accordance with the provisions of this subsection subject to such
        additional terms and conditions, not inconsistent with the provisions of
        the Plan, as the Committee shall determine to be appropriate.

         1.     Exercise Price. The purchase price per Share under an Option
                shall be determined by the Committee; provided, however, that
                such purchase price shall not be less than 100% of the Fair
                Market Value of a Share on the date


<PAGE>   6



                of grant of such Option, and such purchase price may not be
                decreased during the term of the Option other than pursuant to
                Section 8.

         2.     Option Term. The term of each Option shall be fixed by the
                Committee; provided, however, that the maximum term of each
                Nonqualified Stock Option shall be ten years.

         3.     Time and Manner of Exercise. The Committee shall determine the
                time or times at which an Option may be exercised, and the
                manner in which (including, without limitation, cash, Shares,
                other securities, other Awards or other property, or any
                combination thereof, having a Fair Market Value on the exercise
                date equal to the relevant exercise price) payment of the
                exercise price with respect thereto may be made, or deemed to
                have been made. Any form of "cashless" exercise of an Option
                which is legally permissible may be utilized under the Plan in
                connection with the exercise of an Option.

         4.     Employment Status.

                a.    Intentionally left blank.

                b.    Retirement. An Award Recipient's Retirement shall not
                      affect any current Options other than those granted in the
                      year of Retirement. All current Options other than those
                      granted in the year of Retirement shall continue to vest
                      pursuant to the vesting schedule applicable to such
                      Options and any vested Option (including any ISO held by
                      an optionee who is not Disabled), held by such individual
                      shall continue to be in full force and effect, provided
                      the term of the Option has not otherwise expired, for the
                      remainder of the term of the Option. All options granted
                      in the year of Retirement which have not otherwise vested
                      shall terminate upon the date of Retirement.

                c.    Disability. Upon the cessation of the Award Recipient's
                      employment due to Disability, any Option held by such
                      individual shall continue to be exercisable, provided the
                      term of the Option has not otherwise expired, for a period
                      of three years subsequent to the date of cessation of the
                      Award Recipient's employment (or, in the case of any ISO
                      held by an optionee who is Disabled, for a period of one
                      year subsequent to such cessation date).

                d.    Termination of Employment. Upon the cessation of the Award
                      Recipient's employment for any reason other than
                      Retirement, Disability or death, any Option held by such
                      individual shall continue to be exercisable, provided the
                      term of the Option has not otherwise expired, for a period
                      of ninety days after the date of termination of the Award
                      Recipient's employment.


<PAGE>   7



                e.    Death. Upon the Award Recipient's death (whether during
                      his or her employment with the Corporation or an Affiliate
                      or during any applicable post-termination exercise
                      period), any Option held by such individual shall continue
                      to be exercisable by the Beneficiary(ies) of the decedent,
                      provided the term of the Option (as such term may have
                      been shortened due to the Award Recipient's Retirement,
                      Disability or termination of employment for any other
                      reason) has not otherwise expired, for a period of one
                      year after the date of the Award Recipient's death (or, in
                      the case of ISOs, for a period of three months after the
                      Award Recipient's death).

                f.    Extension or Reduction of Exercise Period. In any of the
                      foregoing circumstances, the Committee may extend or
                      shorten the exercise period, but may not extend any such
                      period beyond the term of the Option as originally
                      established (or, insofar as this paragraph relates to
                      SARs, the term of the SAR as originally established).
                      Further, with respect to ISOs, as a condition of any such
                      extension, the holder shall be required to deliver to the
                      Corporation a release which provides that such individual
                      will hold the Corporation and/or Affiliate harmless with
                      respect to any adverse tax consequences the individual may
                      suffer by reason of any such extension.

         5.     Reload Options. With respect to Options granted pursuant to this
                Plan, the Committee may grant "reload" options pursuant to which
                grant the Award Recipient will receive a new Option when the
                payment of the exercise price of a previously granted Option is
                made by the delivery of Shares already owned by the Award
                Recipient pursuant to Section 6(A)(3) hereof, and/or when Shares
                are tendered or forfeited as payment of the amount required to
                be withheld under applicable income tax laws in connection with
                the exercise of an Option. Any such new Option shall be an
                Option to purchase the number of Shares not exceeding the sum of
                (A) the number of Shares tendered or forfeited to satisfy the
                purchase price upon the exercise of the previously- granted
                Option to which such "reload" option relates, and (B) the number
                of Shares tendered or forfeited as payment of the amount to be
                withheld under applicable income tax laws in connection with the
                exercise of the Option to which such "reload" option relates.
                Such "reload" Options shall have a per share exercise price
                equal to the Fair Market Value as of the date of grant of the
                Shares covered by such Option.

b.       Stock Appreciation Rights. The Committee may grant Stock Appreciation
         Rights to Eligible Individuals in accordance with the provisions of
         this subsection subject to such additional terms and conditions, not
         inconsistent with the provisions of the Plan, as the Committee shall
         determine to be appropriate. A Stock Appreciation Right granted under
         the Plan shall confer on the Award Recipient a right to receive upon
         exercise thereof the excess of (i) the Fair Market Value of one Share
         on the date of exercise (or, if the Committee shall so determine, at
         any time during a


<PAGE>   8



         specified period before or after the date of exercise) over (ii) the
         grant price of the Stock Appreciation Right as specified by the
         Committee, which price shall not be less than 100% of the Fair Market
         Value of one Share on the date of grant of the Stock Appreciation
         Right. Subject to the terms of the Plan and any applicable Agreement,
         the grant price, term, manner of exercise, dates of exercise, methods
         of settlement and any other terms and conditions of any Stock
         Appreciation Right shall be those determined by the Committee. The
         Committee may impose such conditions or restrictions on the exercise of
         any Stock Appreciation Right as it may deem appropriate. Except as
         otherwise provided herein, any SAR must be exercised during the period
         of the Award Recipient's employment with the Corporation or Affiliate.
         The provisions of Section 6(A)(4)(b)-(f) hereof shall apply for
         purposes of determining the exercise period in the event of the Award
         Recipient's Retirement, Disability, death or other termination of
         employment.

c.       Restricted Stock. The Committee may make Restricted Stock Awards to
         Eligible Individuals in accordance with the provisions of this
         subsection subject to such additional terms and conditions not
         inconsistent with the provisions of the Plan as the Committee shall
         determine to be appropriate.

         1.     Nature of Restrictions. Restricted Stock Awards shall be subject
                to such restrictions, including Performance Measures, as the
                Committee may impose (including, without limitation, any
                limitation on the right to vote a Share of restricted stock or
                the right to receive any dividend or other right or property
                with respect thereto), which restrictions may lapse separately
                or in combination at such time or times, in such installments or
                otherwise as the Committee may deem appropriate; provided,
                however, that the minimum Restriction Period with respect to a
                Restricted Stock Award that is made subject to restrictions
                which are performance-related shall be one year. In the event a
                Restricted Stock Award is made subject to restrictions which are
                not performance-related, the minimum Restriction Period shall be
                three years.

         2.     Stock Certificates. Shares of restricted stock under the Plan
                shall be evidenced by issuance of a stock certificate(s), which
                shall be held by the Corporation. Such certificate(s) shall be
                registered in the name of the Award Recipient and shall bear an
                appropriate legend which refers to the restrictions applicable
                to such Restricted Stock Award. Alternatively, shares of
                restricted stock under the Plan may be recorded in book entry
                form.

         3.     Forfeiture; Delivery of Shares. Except as otherwise determined
                by the Committee, upon termination of an Award Recipient's
                employment (as determined under criteria established by the
                Committee) during the applicable Restriction Period, all Shares
                of restricted stock shall be forfeited and reacquired by the
                Corporation. However, in such circumstances, the Committee may
                waive, in whole or in part, any or all remaining restrictions
                applicable to the Restricted Stock Award. Shares comprising any
                Restricted


<PAGE>   9



                Stock Award held by the Corporation that are no longer subject
                to restrictions shall be delivered to the Award Recipient (or
                his or her Beneficiary) promptly after the applicable
                restrictions lapse or are waived.

d.       Performance Awards. The Committee may grant Performance Awards to
         Eligible Individuals in accordance with the provisions of this
         subsection subject to such additional terms and conditions, not
         inconsistent with the provisions of the Plan, as the Committee shall
         determine to be appropriate. A Performance Award granted under the Plan
         (i) may be denominated or payable in cash, Shares (including, without
         limitation, restricted Shares), other securities, other Awards, or
         other property, and (ii) shall confer on the Award Recipient the right
         to receive a payment upon the attainment of Performance Measures during
         any Performance Period the Committee may establish. The payment of any
         Performance Award (or any part of any Performance Award) in Shares
         (whether or not such Shares are restricted Shares), other securities,
         other Awards or other property shall be in lieu of a cash payment of
         such Performance Award (or such part thereof). Subject to the terms of
         the Plan and any applicable Award Agreement, the Performance Measures
         to be achieved during any Performance Period, the length of any
         Performance Period and the amount of any payment or transfer to be made
         pursuant to any Performance Award shall be determined by the Committee.

e.       Other Stock-Based Awards. The Committee may grant Other Stock-Based
         Awards to Eligible Individuals in accordance with the provisions of
         this subsection and subject to such additional terms and conditions,
         including Performance Measures, not inconsistent with the provisions of
         the Plan, as the Committee shall determine. Other Stock-Based Awards
         may be denominated or payable in, valued in whole or in part by
         reference to, or otherwise based on or related to, Shares (including,
         without limitation, securities convertible into Shares), as are deemed
         by the Committee to be consistent with the purpose of the Plan;
         provided, however, that such grants must comply with applicable law.

f.       General. Except as otherwise specified herein, the following provisions
         shall relate to Awards under the Plan:

         1.     Consideration for Awards. Awards shall be made without monetary
                consideration or for such minimal monetary consideration as may
                be required by applicable law.

         2.     Separate or Tandem Awards. Awards may, in the discretion of the
                Committee, be granted either alone or in addition to, in tandem
                with, in fulfillment of, or in substitution for, any other Award
                or any award made under any plan of the Company or any Affiliate
                other than this Plan. Awards granted in addition to, or in
                tandem with, other Awards, or in addition to, or in tandem with,
                awards made under any such other plan of the Corporation or any
                Affiliate may be


<PAGE>   10



                made either at the same time as, or at a different time from,
                the making of such other Awards or awards.

         3.     Forms of Payment under Awards. Subject to the terms of the Plan
                and of any applicable Agreement, payments or transfers to be
                made by the Corporation or an Affiliate upon the grant, exercise
                or payment of an Award may be made in such form or forms as the
                Committee shall determine (including, without limitation, cash,
                Shares, other securities, other Awards or other property or any
                combination thereof), and may be made in a single payment or
                transfer, in installments or an a deferred basis, in each case
                in accordance with rules and procedures established by the
                Committee. Such rules and procedures may include, without
                limitation, provisions for the payment or crediting of
                reasonable interest on installment or deferred payments.

         4.     Limits on Transfer of Awards. No Award and no right under any
                such Award shall be transferable by an Award Recipient otherwise
                than by will or by the laws of intestacy; provided, however,
                that, an Award Recipient may, in the manner established by the
                Committee, designate a Beneficiary to exercise the rights of the
                Award Recipient and to receive any property distributable with
                respect to any Award upon the death of the Award Recipient. Each
                Award or right under any Award shall be exercisable during the
                Award Recipient's lifetime only by the Award Recipient or, if
                permissible under applicable law, by the Award Recipient's
                guardian or legal representative. No Award or right under any
                such Award may be pledged, alienated, attached or otherwise
                encumbered, and any purported pledge, alienation, attachment or
                encumbrance thereof shall be void and unenforceable against the
                Corporation or any Affiliate.

         5.     Term of Awards. Subject to any specific provisions of the Plan,
                the term of each Award shall be for such period as may be
                determined by the Committee.

         6.     Securities Law Restrictions. All certificates for Shares or
                other securities delivered under the Plan pursuant to any Award
                or the exercise thereof shall be subject to such restrictions as
                the Committee may deem advisable under the Plan, or the rules,
                regulations and other requirements of the Securities and
                Exchange Commission, the New York Stock Exchange, any other
                exchange on which Shares may be eligible to be traded or any
                applicable federal or state securities laws, and the Committee
                may cause a legend or legends to be placed on any such
                certificates to make appropriate reference to such restrictions.

         7.     Limitation on Awards. The maximum amount of compensation payable
                with respect to any Award to any Eligible Officer under the Plan
                which is settled in cash will not exceed $2,500,000 for any
                calendar year.



<PAGE>   11



SECTION 7.  WITHHOLDING OF TAXES.

The Corporation will, if required by applicable law, withhold the minimum
statutory amount of Federal, state and/or local withholding taxes in connection
with the exercise or vesting of an Award. Unless otherwise provided in the
applicable Agreement, each Award Recipient may satisfy any such tax withholding
obligation by any of the following means, or by a combination of such means: (i)
a cash payment; (ii) by delivery to the Corporation of already-owned Shares
which have been held by the individual for at least six months having a Fair
Market Value, as of the Tax Withholding Date, sufficient to satisfy the amount
of the withholding tax obligation arising from an exercise or vesting of an
Award; (iii) by authorizing the Corporation to withhold from the Shares
otherwise issuable to the individual pursuant to the exercise or vesting of an
Award, a number of shares having a Fair Market Value, as of the Tax Withholding
Date, which will satisfy the amount of the withholding tax obligation; or (iv)
by a combination of such methods of payment. If the amount requested is not
paid, the Corporation may refuse to satisfy the Award.

SECTION 8.  ADJUSTMENTS UPON CHANGES IN CAPITALIZATION.

In the event the number of outstanding Shares changes as a result of any stock
split, stock dividend, recapitalization, merger, consolidation, reorganization,
combination, or exchange of shares, split-up, split-off, spin-off, liquidation
or other similar change in capitalization, or any distribution made to common
stockholders other than cash dividends, the number or kind of shares that may be
issued under the Plan pursuant to Section 3, and the number or kind of shares
subject to, or the exercise price per share under, any outstanding Award, shall
be automatically adjusted, and the Committee shall be authorized to make such
other equitable adjustment of any Award or Shares issuable pursuant thereto, or
in any Performance Measures relating to any Award, so that the value of the
interest of the individual shall not be decreased by reason of the occurrence of
such event. Any such adjustment shall be conclusive and binding.

SECTION 9.  AMENDMENT AND TERMINATION.

The Committee may amend, modify or terminate the Plan, at any time, in such
respects as it shall deem advisable. Any such amendment, modification or
termination of the Plan shall not, without the consent of any Award Recipient,
adversely affect his or her rights under an Award previously made.

SECTION 10.  MISCELLANEOUS PROVISIONS.

a.      No employee or other person shall have any claim or right to receive an
        Award under the Plan.

b.      Receipt of an Award shall not confer upon the Award Recipient any rights
        of a shareholder with respect to any Shares subject to such Award except
        as specifically provided in the Agreement relating to the Award.


<PAGE>   12




c.      The Plan, the making and exercise of Awards thereunder, and the
        obligations of the Corporation to satisfy Awards shall be subject to all
        applicable Federal and state laws, rules and regulations and to such
        approvals by any government or regulatory agency as may be required, and
        the Committee may impose any additional restrictions with respect to
        Awards in order to comply with any legal requirements applicable to
        Awards or to qualify for any exemption it may deem appropriate.

d.      The expenses of the Plan shall be borne by the Corporation.

e.      By accepting an Award under the Plan or payment pursuant to any Award,
        each Award Recipient, legal representative and Beneficiary shall be
        conclusively deemed to have indicated his or her acceptance and
        ratification of, and consent to, any action taken under the Plan by the
        Committee or the Corporation.

f.      Awards under the Plan shall be binding upon the Corporation, its
        successors, and assigns.

g.      Nothing in the Plan, or in any Agreement entered into pursuant to the
        Plan, shall confer on an Award Recipient any right to continue in the
        employ of the Corporation or any Affiliate, or in any way affect the
        Corporation's (or such Affiliate's) right to terminate the individual's
        employment without prior notice, at any time, for any reason or for no
        reason.

h.      Participation in the Plan shall not affect an individual's eligibility
        to participate in any other benefit or incentive plan of the
        Corporation.

i.      A breach by any Award Recipient, his or her Beneficiary(ies), or legal
        representative, of any restrictions, terms or conditions contained in
        the Plan, any Agreement, or otherwise established by the Committee with
        respect to any Award will, unless waived in whole or in part by the
        Committee, cause a forfeiture of such Award.

j.      This Amended and Restated Comerica Incorporated 1997 Long-Term Incentive
        Plan shall be effective on November 19, 1999 and thereafter shall
        continue until terminated by the Committee.

k.      Except to the extent superseded by Federal law, the provisions of this
        Plan shall be interpreted and construed in accordance with the laws of
        the State of Delaware.



                                       2
<PAGE>   13


                                    EXHIBIT A

                                CHANGE OF CONTROL

For the purpose of this Plan, a "Change of Control" shall mean:

l.      The acquisition by any individual, entity or group (within the meaning
        of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1934,
        as amended (the "Exchange Act")) (a "Person") of beneficial ownership
        (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of
        20% or more of either (i) the then outstanding shares of common stock of
        the Corporation (the "Outstanding Company Common Stock") or (ii) the
        combined voting power of the then outstanding voting securities of the
        Corporation entitled to vote generally in the election of directors (the
        "Outstanding Company Voting Securities"); provided, however, that for
        purposes of this subsection (a), the following acquisitions shall not
        constitute a Change of Control: (i) any acquisition directly from the
        Corporation, (ii) any acquisition by the Corporation, (iii) any
        acquisition by any employee benefit plan (or related trust) sponsored or
        maintained by the Corporation or any corporation controlled by the
        Corporation or (iv) any acquisition by any corporation pursuant to a
        transaction which complies with clauses (i), (ii) and (iii) of
        subsection 3 of this Exhibit A; or

2.      Individuals who, as of the date hereof, constitute the Corporation's
        Board of Directors (the "Incumbent Board") cease for any reason to
        constitute at least a majority of the Board; provided, however, that any
        individual becoming a director subsequent to the date hereof whose
        election, or nomination for election by the Corporation's shareholders,
        was approved by a vote of at least a majority of the directors then
        comprising the Incumbent Board shall be considered as though such
        individual were a member of the Incumbent Board, but excluding, for this
        purpose, any such individual whose initial assumption of office occurs
        as a result of an actual or threatened election contest with respect to
        the election or removal of directors or other actual or threatened
        solicitation of proxies or consents by or on behalf of a Person other
        than the Board; or

3.      Consummation of a reorganization, merger or consolidation or sale or
        other disposition of all or substantially all of the Corporation's
        assets (a "Business Combination"), in each case, unless, following such
        Business Combination, (i) all or substantially all of the individuals
        and entities who were the beneficial owners, respectively, of the
        Outstanding Company Common Stock and Outstanding Company Voting
        Securities immediately prior to such Business Combination beneficially
        own, directly or indirectly, more than 50% of, respectively, the then
        outstanding shares of common stock and the combined voting power of the
        then outstanding voting securities entitled to vote generally in the
        election of directors, as the case may be, of the company resulting from
        such Business Combination (including, without limitation, a corporation
        which as a result of such transaction owns the Corporation or all or
        substantially all of the Corporation's assets either directly or through
        one or more subsidiaries) in substantially the same proportions as their
        ownership, immediately prior to such Business Combination of the
        Outstanding Company Common Stock and Outstanding Company Voting
        Securities,

<PAGE>   14


        as the case may be, (ii) no Person (excluding any corporation resulting
        from such Business Combination or any employee benefit plan (or related
        trust) of the Corporation or such corporation resulting from such
        Business Combination) beneficially owns, directly or indirectly, 20% or
        more of, respectively, the then outstanding shares of common stock of
        the company resulting from such Business Combination or the combined
        voting power of the then outstanding voting securities of such
        corporation except to the extent that such ownership existed prior to
        the Business Combination and (iii) at least a majority of the members of
        the board of directors of the company resulting from such Business
        Combination were members of the Incumbent Board at the time of the
        execution of the initial agreement, or of the action of the Board,
        providing for such Business Combination; or

4.      Approval by the Corporation's shareholders of a complete liquidation or
        dissolution of the Corporation.











<PAGE>   1
                                                                   EXHIBIT 10.16

                              AMENDED AND RESTATED
                              COMERICA INCORPORATED
                            MANAGEMENT INCENTIVE PLAN


SECTION 1.  PURPOSE.
The purpose of the Comerica Incorporated Management Incentive Plan is to promote
and advance the interests of Comerica Incorporated (the "Corporation") and its
shareholders by enabling the Corporation to attract, retain and reward key
employees of the Corporation and its Affiliates, and to qualify incentive
compensation paid to Participants who are Covered Employees as performance-based
compensation within the meaning of Section 162(m) of the Code.

SECTION 2.  DEFINITIONS.

The terms below shall have the following meanings:

a.     "Affiliate" means (i) any entity that is controlled by the Corporation,
       whether directly or indirectly, and (ii) any entity in which the
       Corporation has a significant equity interest, as determined by the
       Committee.

b.     "Annual Base Salary" means the participant's rate of annual salary as of
       the last December 1st occurring during the Performance Period.

c.     "Board" means the Board of Directors of the Corporation.

d.     "Code" means the Internal Revenue Code of 1986, as amended.

e.     "Committee" means the committee appointed by the Board to administer the
       Plan as provided herein. Unless otherwise determined by the Board, the
       Compensation Committee of the Board shall be the Committee.

f.     "Corporation" means Comerica Incorporated, a Delaware corporation, and
       its successors and assigns.

g.     "Covered Employee" means a "covered employee" within the meaning of
       Section 162(m) of the Code.

h.     "Incentive Payment" means, with respect to each Participant, the amount
       he or she may receive for the applicable Performance Period as
       established by the Committee pursuant to the provisions of the Plan.

i.     "Participant" means any employee of the Corporation or an Affiliate who
       is designated by the Committee as eligible to receive an Incentive
       Payment under the Plan.

j.     "Performance Goals" mean (i) earnings per share, (ii) return on average
       equity, (iii) return on average assets, or (iv) any other objective
       performance goals as may be established by the Committee for a
       Performance Period. Performance Goals may be


<PAGE>   2



       absolute in their terms or measured against or in relationship to other
       companies comparably, similarly or otherwise situated and may be based on
       or adjusted for any other objective goals, events, or occurrences
       established by the Committee for a Performance Period. Such Performance
       Goals may be particular to a line of business, subsidiary or other unit
       or may be based on the performance of the Corporation generally. Such
       Performance Goals may cover such period as may be specified by the
       Committee.

k.     "Performance Period" means, with respect to any Incentive Payment for a
       one-year performance period, the calendar year, and, with respect to any
       Incentive Payment for a three-year performance period, the three-year
       period specified by the Committee.

l.     "Performance Targets" mean the specific measures which must be satisfied
       in connection with any Performance Goal prior to funding of any incentive
       pool.

m.     "Plan" means the Amended and Restated Comerica Incorporated Management
       Incentive Plan.

SECTION 3.  ADMINISTRATION.

The Plan shall be administered by the Committee. Subject to the express
provisions of the Plan, the Committee shall have exclusive authority to
interpret the Plan, to promulgate, amend, and rescind rules and regulations
relating to it and to make all other determinations deemed necessary or
advisable in connection with the administration of the Plan, including, but not
limited to, determinations relating to eligibility, whether to make Incentive
Payments, the terms of any such payments, the time or times at which Performance
Goals are established, the Performance Periods to which Incentive Payments
relate, and the actual dollar amount of any Incentive Payment. The
determinations of the Committee pursuant to this authority shall be conclusive
and binding.

The Committee may, in its discretion, authorize the Chief Executive Officer of
the Corporation to act on its behalf, except with respect to matters relating to
such Chief Executive Officer or which are required to be certified by the
Committee under the Plan, or which are required to be handled exclusively by the
Committee under Code Section 162(m) or the regulations promulgated thereunder.

SECTION 4.  ESTABLISHMENT OF PERFORMANCE GOALS AND INCENTIVE PAYMENTS.

A.     Establishment of Performance Goals. Prior to the completion of 25% of the
       Performance Period or such earlier date as is required under Section
       162(m) of the Code, the Committee shall, in its sole discretion, for each
       such Performance Period, determine and establish in writing the
       following:

        1.     The Performance Goals applicable to the Performance Period; and

        2.     The Performance Targets pursuant to which the total amount which
               may be available for payment to all Participants as Incentive
               Payments based upon the relative level of attainment of the
               Performance Goals may be calculated.


<PAGE>   3



B.   Certification and Payment. After the end of each Performance Period, the
     Committee shall:

     1.   Certify in writing, prior to the unconditional payment of any
          Incentive Payment, the level of attainment of the Performance Goals
          for the Performance Period;

     2.   Determine the total amount available for Incentive Payments based on
          the relative level of attainment of such Performance Goals;

     3.   In its sole discretion, reduce the size of, or eliminate, the total
          amount available for Incentive Payments for the Performance Period;
          and

     4.   In its sole discretion, determine the share, if any, of the available
          amount to be paid to each Participant as that Participant's Incentive
          Payment, and authorize payment of such amount. In the case of a
          Participant who is a Covered Employee, the Committee shall not be
          authorized to increase the amount of the Incentive Payment for any
          Performance Period determined with respect to any such individual by
          reference to the applicable Performance Targets except to the extent
          permitted under Section 162(m) of the Code and regulations thereunder.

C.   Conditional Payments. The Committee may authorize a conditional payment of
     a Participant's Incentive Payment prior to the end of a Performance Period
     based upon the Committee's good faith determination of the projected size
     of (i) the total amount which will become available for payment as
     Incentive Payments for the Performance Period, and (ii) the amount
     determined with respect to any such Participant by reference to the
     Performance Targets.

D.   Other Applicable Rules.

     1.   Unless otherwise determined by the Committee with respect to any
          Covered Employee or by the Corporation's Chief Executive Officer with
          respect to any other Participant (unless otherwise required by
          applicable law), no payment pursuant to this Plan shall be made to a
          Participant unless the Participant is employed by the Corporation or
          an Affiliate as of the date of payment; provided, however, in the
          event of the Participant's (i) retirement in accordance with the
          policies of the Corporation or Affiliate which employs the
          Participant, (ii) death, or (iii) disability (within the meaning of
          such term as set forth in the Long-Term Disability Plan of Comerica
          Incorporated or its successor, the provisions of which are
          incorporated herein by reference, or as the Committee shall determine
          based on information provided to it), the Corporation shall pay the
          Participant an Incentive Payment for the one-year Performance Period
          and the three-year Performance Period, which Incentive Payments shall
          be prorated based on the number of months the Participant was employed
          by the Corporation or an Affiliate during each applicable Performance
          Period (the one- year Performance Period and the three-year
          Performance Period) in which the Participant's retirement, death or
          disability occurred. In the case of the Participant's retirement, such
          payment shall be made at the end of the Performance Period during
          which the Participant retired in the normal course


<PAGE>   4



               of payments made to all other participants, and in the case of
               the Participant's death or disability, such payment shall be made
               as soon as is administratively feasible following the date of the
               Participant's death or disability.

        2.     Incentive Payments shall be subject to applicable federal, state
               and local withholding taxes and other applicable withholding in
               accordance with the Corporation's payroll practices as from
               time-to-time in effect.

        3.     The maximum amount which may become payable to any Covered
               Employee in any calendar year as an Incentive Payment with
               respect to all Performance Periods completed during such calendar
               year shall be the lesser of (i) 200% of such Participant's Annual
               Base Salary, or (ii) $2,500,000.

        4.     Incentive Payments calculated by reference to one-year
               Performance Periods shall be payable in cash or shares of the
               Corporation's common stock, $5.00 par value per share ("Shares"),
               and Incentive Payments calculated by reference to three-year
               Performance Periods shall be payable one-half in cash and one-
               half in Shares. Any such Shares shall be awarded pursuant to the
               Corporation's long-term incentive plan and may be subject to
               restrictions as may be determined by the Committee. In each case,
               Incentive Payments shall be made as soon as practical after the
               completion of the Performance Period. Notwithstanding anything in
               this Section 4(D)(4) to the contrary, if a Participant elects to
               defer receipt of all or any portion of an Incentive Payment under
               the provisions of any deferred compensation plan maintained by
               the Corporation, the provisions in this Plan (including the
               provisions of this Section 4(D)(4)) regarding the timing and form
               of payment of Incentive Payments shall cease to apply to such
               deferred amounts and the provisions of the applicable deferred
               compensation plan shall govern the timing and form of payment of
               such deferred amounts.

        5.     A Participant shall have the right to defer all, and unless
               prohibited by the Committee in its sole discretion a Participant
               shall have the right to defer any portion, of any Incentive
               Payment as permitted under the provisions of any deferred
               compensation plan maintained by the Corporation. The Committee,
               in its sole discretion, may impose limitations on the percentage
               or dollar amount of any Participant election to defer any
               Incentive Payment and may impose rules prohibiting the deferral
               of less than 100% of any Incentive Payment.

        6.     Until paid to a Participant, awards shall not be subject to the
               claims of creditors and may not be assigned, alienated,
               transferred or encumbered in any way other than by will or
               pursuant to laws of intestacy.




<PAGE>   5



SECTION 5.  AMENDMENT OR TERMINATION.

The Committee may amend, modify or terminate the Plan in any respect at any time
without the consent of any Participant. Any such action may be taken without the
approval of the Corporation's shareholders unless shareholder approval is
required by applicable law. Termination of the Plan shall not affect any
Incentive Payments earned prior to, but payable on or after, the date of
termination, and any such payments shall continue to be subject to the terms of
the Plan notwithstanding its termination.

SECTION 6.  CHANGE OF CONTROL.

Notwithstanding any other provision hereof, in the event of a "Change of
Control" of the Company as defined in the Comerica Incorporated Executive
Officer Employment Agreements, the following provisions shall be applicable:

A.      The Performance Periods then in effect will be deemed to have concluded
        on the date of the Change of Control of the Company and the total amount
        deemed to be available to fund the related incentive pools will be that
        proportion of the amount (based upon the number of months in such
        Performance Period elapsed through the date of Change of Control of the
        Company) which would be available for funding assuming the Corporation
        had attained Performance Goals at a level generating maximum funding for
        the Performance Periods; and

B.      The Committee, in its sole discretion, will approve the share of the
        available amount payable to each Participant as that Participant's
        Incentive Payment (provided that in all events the entire available
        amount as calculated pursuant to Section 6(A) shall be paid to
        Participants as Incentive Payments), and payments shall be made to each
        Participant as soon thereafter as is practicable.

SECTION 7.  EFFECTIVE DATE OF THE PLAN.

This Amended and Restated Comerica Incorporated Management Incentive Plan shall
be effective as of November 19, 1999 and shall remain in effect until terminated
by the Committee pursuant to Section 5.

SECTION 8.  GENERAL PROVISIONS.

A.      The establishment of the Plan shall not confer upon any Participant any
        legal or equitable right against the Corporation or any Affiliate,
        except as expressly provided in the Plan.

B.      The Plan does not constitute an inducement or consideration for the
        employment of any Participant, nor is it a contract between the
        Corporation, or any Affiliate, and any Participant. Participation in the
        Plan shall not give a Participant any right to be retained in the employ
        of the Corporation or any Affiliate.

C.      Nothing contained in this Plan shall prevent the Board or Committee from
        adopting other or additional compensation arrangements, subject to
        shareholder approval if


<PAGE>   6


     such approval is required, and such arrangements may be either generally
     applicable or applicable only in specific cases.

D.   The Plan shall be governed, construed and administered in accordance with
     the laws of the State of Delaware except to the extent such laws may be
     superseded by federal law.

E.   This Plan is intended to comply in all aspects with applicable law and
     regulation, including, with respect to those Participants who are Covered
     Employees, Section 162(m) of the Code. In case any one or more of the
     provisions of this Plan shall be held invalid, illegal or unenforceable in
     any respect under applicable law or regulation, the validity, legality and
     enforceability of the remaining provisions shall not in any way be affected
     or impaired thereby and the invalid, illegal or unenforceable provision
     shall be deemed null and void; however, to the extent permissible by law,
     any provision which could be deemed null and void shall first be construed,
     interpreted or revised retroactively to permit this Plan to be construed in
     compliance with all applicable laws including, without limitation, Code
     Section 162(m), so as to carry out the intent of this Plan.


















<PAGE>   1
                                                                   EXHIBIT 10.18






















                           1999 COMERICA INCORPORATED
                           DEFERRED COMPENSATION PLAN




















<PAGE>   2



                              COMERICA INCORPORATED
                           DEFERRED COMPENSATION PLAN

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
<S>              <C>                                                                                          <C>
ARTICLE I.        PURPOSE AND INTENT............................................................................I-1

ARTICLE II.       DEFINITIONS
         A.       Definitions..................................................................................II-1
                  (1)      Account.............................................................................II-1
                  (2)      Irrevocable Election Form...........................................................II-1
                  (3)      Beneficiary(ies)....................................................................II-1
                  (4)      Board...............................................................................II-1
                  (5)      Code     ...........................................................................II-1
                  (6)      Comerica Stock......................................................................II-1
                  (7)      Comerica Stock Fund  ...............................................................II-1
                  (8)      Committee...........................................................................II-1
                  (9)      Compensation........................................................................II-2
                  (10)     Compensation Deferral...............................................................II-2
                  (11)     Deferral Period.....................................................................II-2
                  (12)     Disabled and Disability.............................................................II-2
                  (13)     Eligible Employee...................................................................II-2
                  (14)     Employer............................................................................II-2
                  (15)     ERISA...............................................................................II-3
                  (16)     Exchange Act........................................................................II-3
                  (17)     Participant.........................................................................II-3
                  (18)     Plan................................................................................II-3
                  (19)     Plan Administrator(s)...............................................................II-3
                  (20)     Retirement..........................................................................II-3
                  (21)     Section 16 Insider..................................................................II-3
                  (22)     Trust...............................................................................II-3
                  (23)     Trustee.............................................................................II-3
                  (24)     Unforeseeable Emergency.............................................................II-3

ARTICLE III.      ELECTION TO PARTICIPATE IN THE PLAN
         A.       Completion of Irrevocable Election Form.....................................................III-1
         B.       Contents of Irrevocable Election Form.......................................................III-1
         C.       Effect of Entering Into Irrevocable Election Form...........................................III-1
         D.       Special Rules Applicable to Irrevocable Election Form
                  and Deferral of Compensation................................................................III-1
                  (1)      Deferral Election to be Made Before
                           Compensation is Earned.............................................................III-1
                  (2)      Irrevocability of Deferral Election................................................III-2
                  (3)      Cancellation of Deferral Election..................................................III-2
         E.       Deferrals By Committee......................................................................III-3

</TABLE>

ARTICLE IV.         DEFERRED COMPENSATION ACCOUNTS AND

                                     - i -

<PAGE>   3

<TABLE>
<CAPTION>

            INVESTMENT OF DEFERRED COMPENSATION
<S>        <C>                                                                                                  <C>
   A.       Deferred Compensation Accounts........................................................................IV-1
   B.       Earnings on Compensation Deferrals....................................................................IV-1
   C.       Contribution of Compensation Deferrals to Trust.......................................................IV-2
   D.       Insulation from Liability.............................................................................IV-2
   E.       Ownership of Compensation Deferrals...................................................................IV-2
   F.       Special Rule Application to Certain Reallocations.....................................................IV-3
   G.       Adjustment of Accounts Upon Changes In Capitalization.................................................IV-4

ARTICLE V.  DISTRIBUTION OF COMPENSATION DEFERRALS
   A.       In General.............................................................................................V-1
            (1)  Employment Through Deferral Period................................................................V-1
            (2)  Termination Prior to End of Deferral Period ......................................................V-2
            (3)  Death of Participant Prior to End of
                 Installment Distribution Period...................................................................V-3
            (4)  Hardship Distributions............................................................................V-3
            (5)  Cash Out Distributions............................................................................V-3
   B.       Designation of Beneficiary.............................................................................V-4
            (1)  Beneficiary Designation Must be Filed Prior to
                 Participant's Death...............................................................................V-4
            (2)  Absence of Beneficiary............................................................................V-4

ARTICLE VI.      AMENDMENT OR TERMINATION
   A.            Amendment and Termination of Plan................................................................VI-1

ARTICLE VII.     AUDITING OF ACCOUNTS AND STATEMENTS
                 TO PARTICIPANTS
   A.            Auditing of Accounts............................................................................VII-1
   B.            Statements to Participants......................................................................VII-1
   C.            Fees and Expenses of Administration.............................................................VII-1

ARTICLE VIII.    MISCELLANEOUS PROVISIONS
   A.            Nonforfeitability of Participant Accounts......................................................VIII-1
   B.            Prohibition Against Assignment.................................................................VIII-1
   C.            No Employment Contract.........................................................................VIII-1
   D.            Successors Bound...............................................................................VIII-1
   E.            Prohibition Against Loans......................................................................VIII-1
   F.            Administration By Committee....................................................................VIII-1
   G.            Governing Law and Rules of Construction........................................................VIII-2
   H.            Power to Interpret.............................................................................VIII-2
   I.            Effective Date.................................................................................VIII-3

</TABLE>

                                     - ii -

<PAGE>   4



                                   ARTICLE I.
                               PURPOSE AND INTENT.
         The Plan enables Eligible Employees to defer receipt of all or a
portion of their Compensation to provide additional income for them subsequent
to retirement, disability or termination of employment. It is the intention of
Comerica Incorporated that the Plan cover only employees who are management or
highly-compensated employees within the meaning of sections 201(2), 301(a)(3),
and 401(a)(1) of ERISA.


                                       I-1

<PAGE>   5



                                   ARTICLE II.

                                  DEFINITIONS.

     A. Definitions. The following words and phrases, wherever capitalized,
shall have the following meanings respectively:

     (1) "Account(s)" means the account established for each Participant under
Article IV(A) hereof.

     (2) "Irrevocable Election Form" means the Irrevocable Election Form in the
form attached hereto as Attachment A, as it may be revised from time to time.

     (3) "Beneficiary(ies)" means the person(s), natural or corporate, in
whatever capacity, designated by a Participant pursuant to this Plan, or the
person otherwise deemed to constitute the Participant's beneficiary under
Article V(B)(2) hereof.

     (4) "Board" means the Board of Directors of Comerica Incorporated.

     (5) "Code" means the Internal Revenue Code of 1986, as amended.

     (6) "Comerica Stock" means shares of common stock of Comerica Incorporated,
$5.00 par value.

     (7) "Comerica Stock Fund" means an investment option established under
the Plan pursuant to which a Participant may have requested investment prior to
January 1, 1999, of sums deferred under the Plan in units whose value is tied to
the market value of shares of Comerica Stock.

     (8) "Committee" means the Compensation Committee of the Board, or such
other committee appointed by the Board to administer the Plan.

     (9) "Compensation" means gross salary from the Employer including base
salary, incentive compensation, bonuses, overtime, commissions and any other
form of

                                      II-1

<PAGE>   6



cash remuneration approved by the Committee, other than an incentive award
granted to Participants pursuant to the Management Incentive Plan that is
related to Comerica Incorporated's 3 year return on equity performance.

     (10) "Compensation Deferral(s)" means the amount of Compensation a
Participant has elected to defer, pursuant to an Irrevocable Election Form and,
where the context requires, shall also include earnings on such amounts.

     (11) "Deferral Period" means the period during which a Participant elects
to defer receipt of Compensation under the Plan, which period shall end
coincident with the Participant's Retirement.

     (12) "Disabled" or "Disability" means "disabled" under the Comerica
Incorporated Long-Term Disability Plan or under the Comerica Incorporated
Executive Long-Term Disability Plan, whichever such plan covers the individual.

     (13) "Eligible Employee" means an individual employed by an Employer who
is: (i) eligible to receive compensation under the Comerica Incorporated
Management Incentive Plan; (ii) eligible to receive compensation under an
incentive program sponsored by any business unit of the Employer, provided the
Compensation the individual expects to earn in the year his deferral election is
operative is approximately $100,000; or (iii) approved for participation by the
Committee on the basis of high earning potential and other relevant factors
consistent with the Plan.

     (14) "Employer" means Comerica Incorporated, a Delaware corporation, and
its subsidiary corporations, and any successor entity which may succeed the
Employer and its subsidiary corporations.

                                      II-2

<PAGE>   7



     (15) "ERISA" means the Employee Retirement Income Security Act of 1974,
as amended.

     (16) "Exchange Act" means the Securities Exchange Act of 1934, as amended.

     (17) "Participant" means an Eligible Employee whose Irrevocable Election
Form has been accepted by the Committee pursuant to Article III(A) hereof, and
who either has a deferral election currently in effect or an Account balance
under the Plan.

     (18) "Plan" means the unfunded, nonqualified elective deferred
compensation plan the provisions of which are set forth herein, as they may be
amended from time to time.

     (19) "Plan Administrator(s)" means the individual(s) appointed by the
Committee to handle the day-to-day administration of the Plan.

     (20) "Retirement" means retirement under the Comerica Incorporated
Retirement Plan.

     (21) "Section 16 Insider" means any Participant who is designated by the
Company as a reporting person under Section 16 of the Exchange Act.

     (22) "Trust" means such trust as may be established by Comerica
Incorporated in connection with this Plan.

     (23) "Trustee" means the entity selected by Comerica Incorporated as
trustee of the Trust.

     (24) "Unforeseeable Emergency" means a severe financial hardship to the
Participant resulting from a sudden and unexpected illness or accident of the
Participant or of a dependent (within the meaning of Code Section 152(a)) of the
Participant, loss of the Participant's property due to casualty, or other
similar extraordinary and unforeseeable circumstances arising as a result of
events beyond the control of the Participant.

                                      II-3

<PAGE>   8



                                  ARTICLE III.

                      ELECTION TO PARTICIPATE IN THE PLAN.

     A. Completion of Irrevocable Election Form. An Eligible Employee who wishes
to become a Participant in the Plan must complete and sign an Irrevocable
Election Form. Any Irrevocable Election Form received by the Committee shall
become binding upon the Committee's acceptance thereof. In the Irrevocable
Election Form, the Employee shall indicate the Compensation the Participant
wishes to defer. An Eligible Employee must file a separate Irrevocable Election
Form with respect to each year's Compensation he or she wishes to defer.

     B. Contents of Irrevocable Election Form. Each Irrevocable Election Form
shall: (i) designate the amount of Compensation to be deferred in whole
percentages or in whole dollars; (ii) request that the Employer defer payment of
the Compensation to the Participant until the year the Participant retires;
(iii) state how the Participant wishes to receive payment of the Compensation
Deferrals at retirement; and (iv) contain other provisions the Committee deems
appropriate.

     C. Effect of Entering Into Irrevocable Election Form. Upon the Committee's
acceptance of a Participant's Irrevocable Election Form, the Participant shall
be (i) bound by the provisions of the Plan and by the provisions of any
agreement governing the Trust; (ii) bound by the provisions of the Irrevocable
Election Form; and (iii) deemed to have assumed the risks of deferral,
including, without limitation, the risk of poor investment performance and the
risk that Comerica Incorporated may become insolvent.

     D. Special Rules Applicable to Irrevocable Election Forms and Deferral of
Compensation.

     (1) Deferral Election to be Made Before Compensation is Earned. In no event
shall any Compensation which has been earned by a Participant prior to the date
such Participant's Irrevocable Election Form has been accepted by the Committee
be deferred

                                      III-1


<PAGE>   9



under the Plan. Further, the effective date of any Irrevocable Election
Form shall not be earlier than the first day of the calendar year which begins
after the Irrevocable Election Form is signed by the Participant and accepted by
the Committee. Notwithstanding the preceding sentence, an Irrevocable Election
Form delivered to the Committee within 60 days of the effective date of the Plan
may defer Compensation to be earned in the remaining portion of the year in
which it is delivered; and, provided further, an Irrevocable Election Form
delivered to the Committee within 30 days of the date an individual first
becomes eligible to participate in the Plan may defer Compensation to be earned
in the remaining portion of the year in which it is delivered.

         Notwithstanding anything in this Article III to the contrary, the
Committee, in its sole discretion, may impose limitations on the percentage or
dollar amount of any Participant election to defer Compensation and may impose
rules prohibiting the deferral of less than 100% of any award under any
incentive compensation plan of the Employer that permits deferral of awards
thereunder.
         (2) Irrevocability of Deferral Election. Except as provided in Article
III(D)(3) and V(A)(4) below, the provisions of the Irrevocable Election Form
relating to a Participant's election to defer Compensation and the Participant's
selection of the time and manner of payment of Compensation Deferrals shall be
irrevocable.
         (3) Cancellation of Deferral Election. In the event of an Unforeseeable
Emergency, the Committee may, in its sole discretion, permit the Participant to
cancel an election to defer Compensation, in whole or in part, and permit the
Participant to receive at the otherwise scheduled payment date whatever portion
of the amount subject to the

                                      III-2

<PAGE>   10



deferral election is necessary, in the judgment of the Committee, to alleviate
the financial hardship occasioned by the Unforeseeable Emergency.
         Any Participant who seeks to cancel a deferral election on account of
an Unforeseeable Emergency shall submit to the Committee a written request which
sets forth in reasonable detail the Unforeseeable Emergency, and the amount of
the Compensation Deferral which the Participant believes to be necessary to
remedy it. In determining whether to grant any Participant's request to cancel a
deferral election on the basis of an Unforeseeable Emergency, the Committee
shall adhere to the requirements of Section 1.457-2(h)(4) of the Income Tax
Regulations, the provisions of which are incorporated herein by reference. Any
Participant who is permitted to cancel a deferral election shall not again be
eligible to submit a deferral election until the calendar year following the
calendar year in which such cancellation is permitted.
         If a Participant receives a hardship distribution under the Comerica
Incorporated Preferred Savings Plan, the Participant's deferral election
hereunder shall be automatically canceled to the extent it would defer the
Participant's receipt of any Compensation the Participant would earn during a
twelve-month period beginning on the date of the Participant's receipt of such
hardship distribution. Any Participant whose deferral election is automatically
canceled in accordance with the provisions hereof shall not again be eligible to
submit a deferral election until the next enrollment period after the elapse of
at least 12 months following the Participant's receipt of a hardship
distribution.
         E. Deferrals By Committee. At its discretion, the Committee may defer
any Compensation payable to an Eligible Employee pursuant to a notice to the
Eligible Employee. Any Compensation payable to an Eligible Employee which is
deferred by the

                                      III-3

<PAGE>   11



Committee shall be paid to the Eligible Employee in a manner determined by the
Committee, i.e., a lump sum or installments, upon his or her termination of
employment. Any Compensation deferred under the Plan by the Committee shall be
invested in the investment option under the Plan which most closely approximates
a money market fund pending the Employer's receipt of an investment request from
the Eligible Employee. It shall be the Eligible Employee's obligation to submit
an investment request to the Employer if any Compensation deferred by the
Committee is to be invested in any fund other than a money market fund.
Notwithstanding anything to the contrary, no Compensation, other than the
Compensation placed in the Account prior to January 1,1999, shall be invested in
or reallocated to Comerica Stock. Also, upon the death of the Eligible Employee
on behalf of whom the Compensation is deferred prior to distribution of all
Compensation deferred by the Committee and the earnings thereon, unless the
Eligible Employee has delivered a beneficiary designation form to the Committee
with respect to the sums deferred by the Committee, the balance will be
distributed to the Beneficiary(ies) listed on the most recent beneficiary
designation form delivered to the Committee with respect to other Compensation
deferred by the Eligible Employee under the Plan. If the Eligible Employee has
not designated a Beneficiary(ies) with respect to sums deferred by the Committee
and has not deferred other Compensation under the Plan (or submitted a
beneficiary designation form with respect to any such deferrals), the
Compensation deferred by the Committee and any earnings thereon shall be payable
to the Eligible Employee's estate upon his or her death.

                                      III-4

<PAGE>   12



                                   ARTICLE IV.

                         DEFERRED COMPENSATION ACCOUNTS

                    AND INVESTMENT OF DEFERRED COMPENSATION.

         A. Deferred Compensation Accounts. The Plan Administrator shall
establish a book reserve account in the name of each Participant. As soon as is
administratively feasible following the date Compensation subject to a
Participant's deferral election would otherwise be paid to the Participant, the
Plan Administrator shall credit the Compensation being deferred to the
Participant's Account. Each Participant's Account shall further be credited with
earnings or charged with losses resulting from the deemed investment of the
Compensation Deferrals credited to the Account as though the Compensation
Deferrals had been invested in the investments selected by the Participant as
provided below, and shall be charged with any distributions, any federal and
state income tax withholdings, any social security tax as may be required by law
and by any further amounts, including administrative fees and expenses, the
Employer is either required to withhold or determines are appropriate charges to
such Participant's Account.
         B. Earnings on Compensation Deferrals. At the time a Participant
submits an Irrevocable Election Form, and from time to time thereafter at
intervals to be determined by the Committee, each Participant shall direct, in a
form approved by and in accordance with procedures established by the Committee,
how the Participant chooses the balance in his Account to be deemed to be
invested among investment options (which shall not include Comerica Stock) to be
made available by the Committee. In lieu of making investment options available
to Participants, Comerica Incorporated may credit deferred sums with a
reasonable rate of interest to reflect the time value of money.

                                      IV-1





<PAGE>   13

         Comerica Incorporated shall be under no obligation to acquire any of
the investments selected by any Participant, and any investments actually made
by it with Compensation Deferrals will be acquired solely in the name of
Comerica Incorporated, and will remain the sole property of Comerica
Incorporated.
         C. Contribution of Compensation Deferrals to Trust. In the sole
discretion of Comerica Incorporated, all or any portion of the Compensation
Deferrals credited to any Participant's Account may be contributed to a Trust
established by Comerica Incorporated in connection with the Plan. No Participant
or Beneficiary shall have the right to direct or require that Comerica
Incorporated contribute the Participant's Compensation Deferrals to the Trust.
Any Compensation Deferrals so contributed shall be held, invested and
administered to provide benefits under the Plan except as otherwise required in
the agreement governing the Trust.
         D. Insulation from Liability. No member of the Committee or officer,
employee or director of any Employer shall be liable to any person for any
action taken or omitted in connection with the administration of this Plan or
Trust unless attributable to such individual's own fraud or willful misconduct.
         E. Ownership of Compensation Deferrals. Title to and beneficial
ownership of any assets, of whatever nature, which may be allocated by Comerica
Incorporated to any Account in the name of any Participant shall at all times
remain with Comerica Incorporated, and no Participant or Beneficiary shall have
any property interest whatsoever in any specific assets of Comerica Incorporated
by reason of the establishment of the Plan nor shall the rights of any
Participant or Beneficiary to payments under the Plan be increased by reason of
Comerica Incorporated's contribution of

                                      IV-2

<PAGE>   14



Compensation Deferrals to the Trust. The rights of each Participant and
Beneficiary hereunder shall be limited to enforcing the unfunded, unsecured
promise of the Participant's Employer to pay benefits under the Plan, and the
status of any Participant or Beneficiary shall be that of an unsecured general
creditor of Comerica Incorporated. Participants and Beneficiaries shall not be
deemed to be parties to any trust agreement Comerica Incorporated enters into
with the Trustee.
         F. Special Rule Applicable To Certain Reallocations.
         (A) Notwithstanding the foregoing, effective January 1, 1999, a
Participant may not direct a reallocation of monies out of any investment fund
into the Comerica Stock Fund. A Participant may however, reallocate monies out
of the Comerica Stock Fund into any other investment fund (which shall not
include the Comerica Stock Fund), except as provided in subsection (B) of this
section.
         (B) A Section 16 Insider may not direct a reallocation of monies out of
the Comerica Stock Fund into any other investment funds if, within the previous
six months, he or she (or any other person whose transactions are attributed to
the Section 16 Insider under Section 16 of the Exchange Act) either (i) acquired
shares of Comerica Stock in the open market or pursuant to a private
transaction, or (ii) made an election under the Plan (or under any other plan
sponsored by the Company) that resulted in an acquisition of equity securities
of the Company within the meaning of that term under Section 16 of the Exchange
Act.
         To the extent consistent with rules under Section 16 of the Exchange
Act, the foregoing prohibitions shall not be applicable if the reallocation is
in connection with the Section 16 Insider's death, disability, retirement or
termination of employment.

                                      IV-3

<PAGE>   15



         Notwithstanding any other provision of the Plan, effective January 1,
1999, except in the circumstances of death, Disability, Retirement or other
termination of employment, a Section 16 Insider shall not be permitted to
receive a cash distribution from the Plan which is funded to any extent by a
disposition of his or her interest.
         G. Adjustment of Accounts Upon Changes In Capitalization. With respect
to Accounts that are deemed to be invested in whole or in part in the Comerica
Stock Fund, in the event the number of outstanding shares of Comerica Stock
changes as a result of any stock split, stock dividend, recapitalization,
merger, consolidation, reorganization, combination, or exchange of shares,
split-up, split-off, spin-off, liquidation or other similar change in
capitalization, or any distribution made to common stockholders other than cash
dividends, the number or kind of shares of Comerica Stock in which such Accounts
are deemed to be invested shall be automatically adjusted, and the Committee
shall be authorized to make such other equitable adjustment of any Account, so
that the value of the Account shall not be decreased by reason of the occurrence
of such event. Any such adjustment shall be conclusive and binding.

                                      IV-4

<PAGE>   16



                                   ARTICLE V.
                     DISTRIBUTION OF COMPENSATION DEFERRALS.
         A. In General. The benefits payable hereunder as deferred compensation
shall be paid to the Participant or to the Participant's Beneficiary as follows:
(1) Employment Through Deferral Period. If the Participant's employment with an
Employer continues until the last day of the Deferral Period, Comerica
Incorporated shall, as soon as administratively feasible following the end of
the Deferral Period, distribute, or commence to distribute, the balance of the
Account in the name of the Participant in cash in any manner described below
which is selected by the Participant in the Participant's Irrevocable Election
Form: (i) a single sum; (ii) annual installments over 5 years, (iii) annual
installments over 10 years; or (iv) annual installments over 15 years.
         For purposes of determining the amount of annual installments, X shall
equal the number of years over which benefits will be paid as elected by the
Participant. Comerica Incorporated shall pay to the Participant or to the
Participant's Beneficiary an amount equal to 1/X of the fair market value of the
Account in the Participant's name, such value to be determined by the Committee
as of the earliest convenient date, as determined by the Committee, which occurs
prior to the date the payment is to be made. On approximately the same date of
the following year, Comerica Incorporated shall pay to the Participant or to the
Participant's Beneficiary an amount equal to 1/X-1 of the fair market value of
such Account, such value to be determined by the Committee as of the earliest
convenient date, as determined by the Committee, which occurs prior to the date
the payment is to be made. On approximately the same date of the following year,
Comerica

                                       V-1

<PAGE>   17



Incorporated shall pay to the Participant or to the Participant's Beneficiary an
amount equal to 1/X-2 of the fair market value of such Account, such value to be
determined by the Committee as of the earliest convenient date, as determined by
the Committee, which occurs prior to the date the payment is to be made, and
similar payments shall be made on approximately the same date of each succeeding
year until a total of X annual payments have been made with the last such
payment being in an amount equal to the fair market value of the Account in the
name of the Participant determined as of the date such amount is paid.
         (2) Termination Prior to End of Deferral Period. If the Participant's
employment with the Employer terminates prior to the last day of the Deferral
Period (unless such termination is due to the Participant's Disability), then
notwithstanding the manner of distribution selected by the Participant, Comerica
Incorporated shall distribute or direct the Trustee to distribute an amount
equal to the fair market value of the Account in the name of the Participant as
of the earliest convenient date, as determined by the Committee, which occurs
subsequent to the date the Participant's employment terminates. Such amount
shall be distributed to the Participant or to the Participant's Beneficiary in a
single sum as soon as is administratively feasible following the Participant's
termination date.
         If the Participant's employment terminates prior to the last day of the
Deferral Period because the Participant has become Disabled, then
notwithstanding the distribution date selected by the Participant in the
Participant's Irrevocable Election Form, an amount equal to the fair market
value of the Account in the name of the Participant as of the earliest
convenient date, as determined by the Committee, which occurs subsequent to the
date the Participant's employment terminates, shall be distributed, or commence
to be

                                       V-2

<PAGE>   18



distributed, as soon as administratively feasible following his or her
termination date, such distribution to be made in the manner specified in the
Participant's Irrevocable Election Form.
         (3) Death of Participant Prior to End of Installment Distribution
Period. If the Participant dies before a total of X annual payments are made
hereunder, then an amount equal to the fair market value of the Account in the
name of the Participant as of the earliest convenient date, as determined by the
Committee, which occurs subsequent to the date of the Participant's death shall
be distributed in a single sum to the Participant's Beneficiary, such
distribution to be made as soon as is administratively feasible following the
date of the Participant's death.
         (4) Hardship Distributions. In the event of an Unforeseeable Emergency
involving a Participant which occurs prior to distribution of the entire balance
of the Account in the name of the Participant, the Committee may, in its sole
discretion, distribute to the Participant in a single sum an amount equal to
such portion of the Account in the Participant's name as shall be necessary in
the judgment of the Committee to alleviate the financial hardship occasioned by
the Unforeseeable Emergency. Any Participant desiring a distribution under the
Plan on account of an Unforeseeable Emergency shall submit to the Committee a
written request for such distribution which sets forth in reasonable detail the
Unforeseeable Emergency which would cause the Participant severe financial
hardship, and the amount which the Participant believes to be necessary to
alleviate the financial hardship. In determining whether to grant any requested
hardship distribution, the Committee shall adhere to the requirements of the
Income Tax Regulations referred to in Article III(D)(3) hereof.

                                       V-3

<PAGE>   19



         (5) Cash Out Distributions. If, at the time an installment distribution
of an Account in the name of any Participant is scheduled to commence, the fair
market value of such Account does not exceed $5,000 then, notwithstanding an
election by the Participant that such Account be distributed in installments,
the balance of such Account shall be distributed to the Participant in a single
sum on or about the date the first installment is scheduled to be made.
         B. Designation of Beneficiary. A Participant shall deliver to the
Committee a written designation of Beneficiary(ies) under the Plan, which
designation may from time to time be amended or revoked without notice to, or
consent of, any previously designated Beneficiary.
         (1) Beneficiary Designation Must be Filed Prior to Participant's Death.
No designation of Beneficiary, and no amendment or revocation thereof, shall
become effective if delivered to the Committee after such Participant's death,
unless the Committee shall determine such designation, amendment or revocation
to be valid.
         (2) Absence of Beneficiary. In the absence of an effective designation
of Beneficiary, or if no Beneficiary designated shall survive the Participant,
then the balance of the Account in the name of the Participant shall be paid to
the Participant's estate.

                                       V-4

<PAGE>   20



                                   ARTICLE VI.
                            AMENDMENT OR TERMINATION.
         A. Amendment and Termination of Plan. This Plan may be amended or
terminated at any time in the sole discretion of the Committee by a written
instrument executed by the Committee. No such amendment shall affect the time of
payment of any Compensation earned prior to the time of such amendment or
termination except as the Committee may determine to be necessary to carry out
the purpose of the Plan.
         Written notice of any such amendment or termination shall be given to
each Participant. Upon termination of the Plan, Comerica Incorporated shall
distribute to each Participant or Beneficiary, or direct that the Trustee so
distribute, the amounts which would have been distributed to such Participant or
Beneficiary under the Plan had the Participant's employment with an Employer
terminated at the time of termination of the Plan. In addition, no such
amendment shall make the Trust revocable.


                                      VI-1

<PAGE>   21



                                  ARTICLE VII.
                       AUDITING OF ACCOUNTS AND STATEMENTS
                                TO PARTICIPANTS.
         A. Auditing of Accounts. The Plan shall be audited from time to time as
directed by the Committee by auditors selected by the Committee.
         B. Statements to Participants. Statements will be provided to
Participants under the Plan on at least an annual basis.
         C. Fees and Expenses of Administration. Fees of the Trustee and
expenses of administration of the Plan shall be deducted from Accounts.


                                      VII-1

<PAGE>   22



                                  ARTICLE VIII.
                            MISCELLANEOUS PROVISIONS.
         A. Nonforfeitability of Participant Accounts. Each Participant shall be
fully vested in his or her Account.
         B. Prohibition Against Assignment. Benefits payable to Participants and
their Beneficiaries under the Plan may not be anticipated, assigned (either at
law or in equity), alienated, sold, transferred, pledged or encumbered in any
manner, nor may they be subjected to attachment, garnishment, levy, execution or
other legal or equitable process for the debts, contracts, liabilities,
engagements or acts of any Participant or Beneficiary.
         C. No Employment Contract. Nothing in the Plan is intended to be
construed, or shall be construed, as constituting an employment contract between
the Employer and any Participant nor shall any Plan provision affect the
Employer's right to discharge any Participant for any reason or for no reason.
         D. Successors Bound. The contractual agreement between Comerica
Incorporated and each Participant resulting from the execution of an Irrevocable
Election Form shall be binding upon and inure to the benefit of Comerica
Incorporated, its successors and assigns, and to the Participant and to the
Participant's heirs, executors, administrators and other legal representatives.
         E. Prohibition Against Loans. The Participant may not borrow any
Compensation Deferrals from Comerica Incorporated nor utilize his or her Account
as security for any loan from the Employer.


                                     VIII-1

<PAGE>   23



         F. Administration By Committee. Responsibility for administration of
the Plan shall be vested in the Committee. To the extent permitted by law, the
Committee may delegate any authority it possesses to the Plan Administrator(s).
To the extent the Committee has delegated authority concerning a matter to the
Plan Administrator(s), any reference in the Plan to the "Committee" insofar as
it pertains to such matter, shall refer likewise to the Plan Administrator(s).
         G. Governing Law and Rules of Construction. This Plan shall be governed
in all respects, whether as to construction, validity or otherwise, by
applicable federal law and, to the extent that federal law is inapplicable, by
the laws of the State of Michigan. Each provision of this Plan shall be treated
as severable, to the end that, if any one or more provisions shall be adjudged
or declared illegal, invalid or unenforceable, this Plan shall be interpreted,
and shall remain in full force and effect, as though such provision or
provisions had never been contained herein. It is the intention of Comerica
Incorporated that the Plan established hereunder be "unfunded" for income tax
purposes and for purposes of Title I of ERISA, and the provisions hereof shall
be construed in a manner to carry out that intention.
         H. Power to Interpret. This Plan shall be interpreted and effectuated
to comply with the applicable requirements of ERISA, the Code and other
applicable tax law principles; and all such applicable requirements are hereby
incorporated herein by reference. Subject to the above, the Committee shall have
power to construe and interpret this Plan, including but not limited to all
provisions of this Plan relating to eligibility for benefits and the amount,
manner and time of payment of benefits, any such construction and interpretation
by the Committee and any action taken thereon in good faith by the Plan

                                     VIII-2

<PAGE>   24


Administrator(s) to be final and conclusive upon any affected party. The
Committee shall also have power to correct any defect, supply any omission, or
reconcile any inconsistency in such manner and to such extent as the Committee
shall deem proper to carry out and put into effect this Plan; and any
construction made or other action taken by the Committee pursuant to this
Article VIII(H) shall be binding upon such other party and may be relied upon by
such other party.
         I. Effective Date. The effective date of this amendment and restatement
shall be January 1, 1999, except as otherwise expressly stated herein.



                                     VIII-3





<PAGE>   1
                                                                  EXHIBIT 10.19

                           1999 COMERICA INCORPORATED

                         DEFERRED 3 YEAR ROE AWARD PLAN








<PAGE>   2



                           1999 COMERICA INCORPORATED
                         DEFERRED 3 YEAR ROE AWARD PLAN

                                TABLE OF CONTENTS


<TABLE>
<S>               <C>      <C>                                                                                <C>
ARTICLE I.        PURPOSE AND INTENT............................................................................I-1

ARTICLE II.       DEFINITIONS
         A.       Definitions..................................................................................II-1
                  (1)      Account.............................................................................II-1
                  (2)      Irrevocable Election Form...........................................................II-1
                  (3)      Beneficiary(ies)....................................................................II-1
                  (4)      Board...............................................................................II-1
                  (5)      Code     ...........................................................................II-1
                  (6)      Comerica Stock Fund.................................................................II-1
                  (7)      Comerica Stock.................................................................     II-1
                  (8)      Committee...........................................................................II-1
                  (9)      [Intentionally left blank]..........................................................II-1
                  (10)     Deferral Period.....................................................................II-2
                  (11)     Disabled and Disability.............................................................II-2
                  (12)     [Intentionally left blank]..........................................................II-2
                  (13)     Employer ...........................................................................II-2
                  (14)     ERISA...............................................................................II-2
                  (15)     Exchange Act........................................................................II-2
                  (16)     Participant.........................................................................II-2
                  (17)     Plan................................................................................II-2
                  (18)     Plan Administrator(s)...............................................................II-2
                  (19)     Retirement..........................................................................II-2
                  (20)     3 Year ROE Award ...................................................................II-3
                  (21)     3 Year ROE Award Deferral...........................................................II-3
                  (22)     Trust...............................................................................II-3
                  (23)     Trustee.............................................................................II-3
                  (24)     Unforeseeable Emergency.............................................................II-3

ARTICLE III.      ELECTION TO PARTICIPATE IN THE PLAN
         A.       Completion of Irrevocable Election Form.....................................................III-1
         B.       Contents of Irrevocable Election Form.......................................................III-1
         C.       Effect of Entering Into Irrevocable Election Form...........................................III-1
         D.       Special Rules Applicable to Irrevocable Election Form
                  and Deferral of 3 Year ROE Award ...........................................................III-2
                  (1)      Deferral Election to be Made Before
                           Compensation is Earned.............................................................III-2
                  (2)      Irrevocability of Deferral Election................................................III-2
                  (3)      Cancellation of Deferral Election..................................................III-3
         E.       Deferrals By Committee......................................................................III-4
</TABLE>


                                      - i -

<PAGE>   3



<TABLE>
<S>     <C>       <C>                                                                                        <C>
ARTICLE IV.       DEFERRED 3 YEAR ROE AWARD COMPENSATION ACCOUNTS
                  AND INVESTMENT OF DEFERRED 3 YEAR ROE AWARD
                  COMPENSATION
         A.       Deferred 3 Year ROE Award Accounts...........................................................IV-1
         B.       Earnings on 3 Year ROE Award Deferrals.......................................................IV-1
         C.       Contribution of 3 Year ROE Award Deferrals to Trust..........................................IV-1
         D.       Insulation from Liability....................................................................IV-2
         E.       Ownership of 3 Year ROE Award Deferrals......................................................IV-2
         F.       [Intentionally left blank]...................................................................IV-3
         G.       Adjustment of Accounts Upon Changes in Capitalization........................................IV-3

ARTICLE V.        DISTRIBUTION OF 3 YEAR ROE AWARD DEFERRALS
         A.       In General ...................................................................................V-1
                  (1)      Employment Through Deferral Period...................................................V-1
                  (2)      Termination Prior to End of Deferral Period .........................................V-2
                  (3)      Death of Participant Prior to End of
                           Installment Distribution Period......................................................V-2
                  (4)      Hardship Distributions ..............................................................V-2
                  (5)      Stock Distributions .................................................................V-3
         B.        Designation of Beneficiary...................................................................V-3
                  (1)      Beneficiary Designation Must be Filed Prior to Participant's
                           Death................................................................................V-3
                  (2)      Absence of Beneficiary...............................................................V-3

ARTICLE VI.       AMENDMENT OR TERMINATION
         A.       Amendment and Termination of Plan............................................................VI-1

ARTICLE VII.      AUDITING OF ACCOUNTS AND STATEMENTS
                  TO PARTICIPANTS
         A.       Auditing of Accounts........................................................................VII-1
         B.       Statements to Participants..................................................................VII-1
         C.       Fees and Expenses of Administration.........................................................VII-1

ARTICLE VIII.     MISCELLANEOUS PROVISIONS
         A.       Nonforfeitability of Participant Accounts..................................................VIII-1
         B.       Prohibition Against Assignment.............................................................VIII-1
         C.       No Employment Contract.....................................................................VIII-1
         D.       Successors Bound...........................................................................VIII-1
         E.       Prohibition Against Loans..................................................................VIII-1
         F.       Administration By Committee................................................................VIII-1
         G.       Governing Law and Rules of Construction....................................................VIII-2
         H.       Power to Interpret.........................................................................VIII-2
         I.       Effective Date.............................................................................VIII-3
</TABLE>


                                     - ii -

<PAGE>   4



                                   ARTICLE I.

                               PURPOSE AND INTENT.

         The Plan enables Participants to defer receipt of all or a portion of
their 3 Year ROE Award to provide additional income for them subsequent to
retirement, disability or termination of employment. It is the intention of
Comerica Incorporated that the Plan cover only employees who are management or
highly-compensated employees within the meaning of sections 201(2), 301(a)(3),
and 401(a)(1) of ERISA.


                                       I-1

<PAGE>   5



                                   ARTICLE II.

                                  DEFINITIONS.

         A. Definitions. The following words and phrases, wherever capitalized,
shall have the following meanings respectively:
         (1) "Account(s)" means the account established for each Participant
under Article IV(A) hereof.
         (2) "Irrevocable Election Form" means the Irrevocable Election Form in
the form attached hereto as Attachment A, as it may be revised from time to
time.
         (3) "Beneficiary(ies)" means the person(s), natural or corporate, in
whatever capacity, designated by a Participant pursuant to this Plan, or the
person otherwise deemed to constitute the Participant's beneficiary under
Article V(B)(2) hereof.
         (4) "Board" means the Board of Directors of Comerica Incorporated.
         (5) "Code" means the Internal Revenue Code of 1986, as amended.
         (6) "Comerica Stock Fund" means the investment established under the
Plan pursuant to which a Participant may request investment of sums deferred
under the Plan in units whose value is tied to the market value of shares of
Comerica Stock.
         (7) "Comerica Stock" means shares of common stock of Comerica
Incorporated, $5.00 par value.
         (8) "Committee" means the Compensation Committee of the Board, or such
other committee appointed by the Board to administer the Plan.
         (9) [Intentionally left blank]

                                      II-1

<PAGE>   6



         (10) "Deferral Period" means the period during which a Participant
elects to defer receipt of the 3 Year ROE Award under the Plan, which period
shall end coincident with the Participant's Retirement.
         (11) "Disabled" or "Disability" means "disabled" under the Comerica
Incorporated Long-Term Disability Plan or under the Comerica Incorporated
Executive Long-Term Disability Plan, whichever such plan covers the individual.
         (12) [Intentionally left blank]
         (13) "Employer" means Comerica Incorporated, a Delaware corporation,
and its subsidiary corporations, and any successor entity which may succeed the
Employer and its subsidiary corporations.
         (14) "ERISA" means the Employee Retirement Income Security Act of 1974,
as amended.
         (15) "Exchange Act" means the Securities Exchange Act of 1934, as
amended.
         (16) "Participant" means an employee whose Irrevocable Election Form
has been accepted by the Committee pursuant to Article III(A) hereof, and who
either has a deferral election currently in effect or an Account balance under
the Plan.
         (17) "Plan" means the unfunded, nonqualified elective Deferred 3 Year
ROE Award plan, the provisions of which are set forth herein, as they may be
amended from time to time.
         (18) "Plan Administrator(s)" means the individual(s) appointed by the
Committee to handle the day-to-day administration of the Plan.
         (19) "Retirement" means retirement under the Comerica Incorporated
Retirement Plan.

                                      II-2

<PAGE>   7



         (20) "3 Year ROE Award" means the incentive award granted to
Participants pursuant to the Management Incentive Plan that is related to
Comerica Incorporated's 3 year return on equity performance.
         (21) "3 Year ROE Award Deferral(s)" means the amount of an incentive
award a Participant has elected to defer, pursuant to an Irrevocable Election
Form and, where the context requires, shall also include earnings on such
amounts.
         (22) "Trust" means such trust as may be established by Comerica
Incorporated in connection with this Plan.
         (23) "Trustee" means the entity selected by Comerica Incorporated as
trustee of the Trust.
         (24) "Unforeseeable Emergency" means a severe financial hardship to the
Participant resulting from a sudden and unexpected illness or accident of the
Participant or of a dependent (within the meaning of Code Section 152(a)) of the
Participant, loss of the Participant's property due to casualty, or other
similar extraordinary and unforeseeable circumstances arising as a result of
events beyond the control of the Participant.


                                      II-3

<PAGE>   8



                                  ARTICLE III.

                      ELECTION TO PARTICIPATE IN THE PLAN.

         A. Completion of Irrevocable Election Form. An individual who wishes to
become a Participant in the Plan must complete and sign an Irrevocable Election
Form. Any Irrevocable Election Form received by the Committee shall become
binding upon the Committee's acceptance thereof. In the Irrevocable Election
Form, the employee shall indicate the 3 Year ROE Award the Participant wishes to
defer. A Participant must file a separate Irrevocable Election Form with respect
to each year's 3 Year ROE Award he or she wishes to defer.
         B. Contents of Irrevocable Election Form. Each Irrevocable Election
Form shall: (i) designate the amount of the 3 Year ROE Award to be deferred in
whole percentages or in whole dollars; (ii) request that the Employer defer
payment of the 3 Year ROE Award to the Participant until the year the
Participant retires; (iii) state how the Participant wishes to receive payment
of the 3 Year ROE Award Deferrals at retirement; and (iv) contain other
provisions the Committee deems appropriate.
         C. Effect of Entering Into Irrevocable Election Form. Upon the
Committee's acceptance of a Participant's Irrevocable Election Form, the
Participant shall be (i) bound by the provisions of the Plan and by the
provisions of any agreement governing the Trust; (ii) bound by the provisions of
the Irrevocable Election Form; and (iii) deemed to have assumed the risks of
deferral, including, without limitation, the risk of poor investment performance
and the risk that Comerica Incorporated may become insolvent.


                                      III-1

<PAGE>   9



         D. Special Rules Applicable to Irrevocable Election Forms and Deferral
of The 3 Year ROE Award.
         (1) Deferral Election to be Made Before The 3 Year ROE Award is Earned.
In no event shall any of the 3 Year ROE Award which has been earned by a
Participant prior to the date such Participant's Irrevocable Election Form has
been accepted by the Committee be deferred under the Plan. Further, the
effective date of any Irrevocable Election Form shall not be earlier than the
first day of the calendar year which begins after the Irrevocable Election Form
is signed by the Participant and accepted by the Committee. Notwithstanding the
preceding sentence, an Irrevocable Election Form delivered to the Committee
within 60 days of the effective date of the Plan may defer the 3 Year ROE Award
to be earned in the remaining portion of the year in which it is delivered; and,
provided further, an Irrevocable Election Form delivered to the Committee within
30 days of the date an individual first becomes eligible to participate in the
Plan may defer the 3 Year ROE Award to be earned in the remaining portion of the
year in which it is delivered. Notwithstanding anything in this Article III to
the contrary, the Committee, in its sole discretion, may impose limitations on
the percentage or dollar amount of any Participant election to defer the 3 Year
ROE Award and may impose rules prohibiting the deferral of less than 100% of any
award under any other incentive plan of the Employer that permits deferral of
awards thereunder.
         (2) Irrevocability of Deferral Election. Except as provided in Article
III(D)(3) and V(A)(4) below, the provisions of the Irrevocable Election Form
relating to a Participant's election to defer the 3 Year ROE Award and the
Participant's selection of the time and manner of payment of the 3 Year ROE
Award Deferrals shall be irrevocable.

                                      III-2

<PAGE>   10



         (3) Cancellation of Deferral Election. In the event of an Unforeseeable
Emergency, the Committee may, in its sole discretion, permit the Participant to
cancel an election to defer the 3 Year ROE Award, in whole or in part, and
permit the Participant to receive at the otherwise scheduled payment date
whatever portion of the amount subject to the deferral election is necessary, in
the judgment of the Committee, to alleviate the financial hardship occasioned by
the Unforeseeable Emergency.
         Any Participant who seeks to cancel a deferral election on account of
an Unforeseeable Emergency shall submit to the Committee a written request which
sets forth in reasonable detail the Unforeseeable Emergency, and the amount of
the 3 Year ROE Award Deferral which the Participant believes to be necessary to
remedy it. In determining whether to grant any Participant's request to cancel a
deferral election on the basis of an Unforeseeable Emergency, the Committee
shall adhere to the requirements of Section 1.457-2(h)(4) of the Income Tax
Regulations, the provisions of which are incorporated herein by reference. Any
Participant who is permitted to cancel a deferral election shall not again be
eligible to submit a deferral election until the calendar year following the
calendar year in which such cancellation is permitted.
         If a Participant receives a hardship distribution under the Comerica
Incorporated Preferred Savings Plan, the Participant's deferral election
hereunder shall be automatically canceled to the extent it would defer the
Participant's receipt of any 3 Year ROE Award the Participant would earn during
a twelve-month period beginning on the date of the Participant's receipt of such
hardship distribution. Any Participant whose deferral election is automatically
canceled in accordance with the provisions hereof shall not again be

                                      III-3

<PAGE>   11



eligible to submit a deferral election until the next enrollment period after
the elapse of at least 12 months following the Participant's receipt of a
hardship distribution.
         E. Deferrals By Committee. At its discretion, the Committee may defer
any of the 3 Year ROE Award payable to a Participant pursuant to a notice to the
Participant. Any of the 3 Year ROE Award payable to a Participant which is
deferred by the Committee shall be distributed to the Participant in shares of
Comerica Stock by either a lump sum distribution of Comerica Stock or
installments of Comerica Stock, upon his or her termination of employment. Any 3
Year ROE Award deferred under the Plan by the Committee shall be invested in the
Comerica Stock Fund. Also, upon the death of the Participant on behalf of whom
the 3 Year ROE Award is deferred prior to distribution of all of the 3 Year ROE
Award deferred by the Committee and the earnings thereon, unless the Participant
has delivered a beneficiary designation form to the Committee with respect to
the sums deferred by the Committee, the balance will be distributed to the
Beneficiary(ies) listed on the most recent beneficiary designation form
delivered to the Committee with respect to any other 3 year ROE Award deferred
by the Participant under the Plan. If the Participant has not designated a
Beneficiary(ies) with respect to sums deferred by the Committee and has not
deferred any other 3 Year ROE Award under the Plan (or submitted a beneficiary
designation form with respect to any such deferrals), the 3 Year ROE Award
deferred by the Committee and any earnings thereon shall be payable in the form
of Comerica Stock to the Participant's estate upon his or her death.

                                      III-4

<PAGE>   12



                                   ARTICLE IV.

                       DEFERRED 3 YEAR ROE AWARD ACCOUNTS

                  AND INVESTMENT OF DEFERRED 3 YEAR ROE AWARD.

         A. Deferred 3 Year ROE Award Accounts. The Plan Administrator shall
establish a book reserve account in the name of each Participant. As soon as is
administratively feasible following the date the 3 Year ROE Award subject to a
Participant's deferral election would otherwise be paid to the Participant, the
Plan Administrator shall credit the 3 Year ROE Award being deferred to the
Participant's Account. Each Participant's Account shall further be credited with
earnings or charged with losses resulting from the deemed investment of the 3
Year ROE Award Deferrals credited to the Account as though the 3 Year ROE Award
Deferrals had been invested in Comerica Stock, and shall be charged with any
distributions, any federal and state income tax withholdings, any social
security tax as may be required by law and by any further amounts, including
administrative fees and expenses, the Employer is either required to withhold or
determines are appropriate charges to such Participant's Account.
         B. Earnings on 3 Year ROE Award Deferrals. At the time a Participant
submits an Irrevocable Election Form, and from time to time thereafter at
intervals to be determined by the Committee, each Participant shall invest the
balance of his Account, any earnings and dividends thereon in Comerica Stock.
         Comerica Incorporated shall be under no obligation to acquire any
Comerica Stock to fund this Plan, and any investment actually made by the
Corporation with 3 Year ROE Award Deferrals will be acquired solely in the name
of Comerica Incorporated, and will remain the sole property of Comerica
Incorporated.

                                      IV-1

<PAGE>   13
         C. Contribution of 3 Year ROE Award Deferrals to Trust. In the sole
discretion of Comerica Incorporated, all or any portion of the 3 Year ROE Award
Deferrals credited to any Participant's Account may be contributed to a Trust
established by Comerica Incorporated in connection with the Plan. No Participant
or Beneficiary shall have the right to direct or require that Comerica
Incorporated contribute the Participant's 3 Year ROE Award Deferrals to the
Trust. Any 3 Year ROE Award Deferrals so contributed shall be held, invested and
administered to provide benefits under the Plan except as otherwise required in
the agreement governing the Trust.
         D. Insulation from Liability. No member of the Committee or officer,
employee or director of any Employer shall be liable to any person for any
action taken or omitted in connection with the administration of this Plan or
Trust unless attributable to such individual's own fraud or willful misconduct.
         E. Ownership of 3 Year ROE Award Deferrals. Title to and beneficial
ownership of any assets, of whatever nature, which may be allocated by Comerica
Incorporated to any Account in the name of any Participant shall at all times
remain with Comerica Incorporated, and no Participant or Beneficiary shall have
any property interest whatsoever in any specific assets of Comerica Incorporated
by reason of the establishment of the Plan nor shall the rights of any
Participant or Beneficiary to payments under the Plan be increased by reason of
Comerica Incorporated's contribution of 3 Year ROE Award Deferrals to the Trust.
The rights of each Participant and Beneficiary hereunder shall be limited to
enforcing the unfunded, unsecured promise of the Participant's Employer to pay
benefits under the Plan, and the status of any Participant or Beneficiary shall
be that of an unsecured general creditor of Comerica Incorporated. Participants
and Beneficiaries shall

                                      IV-2

<PAGE>   14



not be deemed to be parties to any trust agreement Comerica Incorporated enters
into with the Trustee.
         F. [Intentionally left blank]
         G. Adjustment of Accounts Upon Changes In Capitalization. In the event
the number of outstanding shares of Comerica Stock changes as a result of any
stock split, stock dividend, recapitalization, merger, consolidation,
reorganization, combination, or exchange of shares, split-up, spin-off,
liquidation or other similar change in capitalization, or any distribution made
to common stockholders other than cash dividends, the number or kind of shares
of Comerica Stock in which such Accounts are deemed to be invested shall be
automatically adjusted, and the Committee shall be authorized to make such other
equitable adjustment of any Account, so that the value of the Account shall not
be decreased by reason of the occurrence of such event. Any such adjustment
shall be conclusive and binding.










                                      IV-3

<PAGE>   15

                                   ARTICLE V.

                   DISTRIBUTION OF 3 YEAR ROE AWARD DEFERRALS.

         A. In General.  The benefits payable hereunder as Deferred 3 Year ROE
Award shall be paid to the Participant or to the Participant's Beneficiary as
follows:
         (1) Employment Through Deferral Period. If the Participant's employment
with an Employer continues until the last day of the Deferral Period, Comerica
Incorporated shall, as soon as administratively feasible following the end of
the Deferral Period, distribute, or commence to distribute, the balance of the
Account in the name of the Participant in Comerica Stock, in any manner
described below which is selected by the Participant in the Participant's
Irrevocable Election Form: (i) a single sum; (ii) annual installments over 5
years, (iii) annual installments over 10 years; or (iv) annual installments over
15 years.
         (2) Termination Prior to End of Deferral Period. If the Participant's
employment with the Employer terminates prior to the last day of the Deferral
Period (unless such termination is due to the Participant's Disability), then
notwithstanding the manner of distribution selected by the Participant, Comerica
Incorporated shall distribute or direct the Trustee to distribute Comerica Stock
to the Participant as of the earliest convenient date, as determined by the
Committee, which occurs subsequent to the date the Participant's employment
terminates. Such shares shall be distributed to the Participant or to the
Participant's Beneficiary in a single distribution as soon as is
administratively feasible following the Participant's termination date.
         If the Participant's employment terminates prior to the last day of the
Deferral Period because the Participant has become Disabled, then
notwithstanding the distribution date

                                       V-1

<PAGE>   16



selected by the Participant in the Participant's Irrevocable Election Form,
certificates evidencing the Comerica Stock Fund investment, shall be
distributed, or commence to be distributed, as soon as administratively feasible
following his or her termination date, such distribution to be made in the
manner specified in the Participant's Irrevocable Election Form.
         (3) Death of Participant Prior to End of Installment Distribution
Period. If the Participant dies before a distribution of all the Comerica Stock
is made, then the remaining Comerica Stock certificates shall be distributed to
the Participant's Beneficiary, such distribution to be made as soon as is
administratively feasible following the date of the Participant's death.
         (4) Hardship Distributions. In the event of an Unforeseeable Emergency
involving a Participant which occurs prior to distribution of the entire balance
of the Account in the name of the Participant, the Committee may, in its sole
discretion, make a single distribution of Comerica Stock, to the Participant in
an amount equal to such portion of the Account in the Participant's name as
shall be necessary in the judgment of the Committee to alleviate the financial
hardship occasioned by the Unforeseeable Emergency. Any Participant desiring a
distribution under the Plan on account of an Unforeseeable Emergency shall
submit to the Committee a written request for such distribution which sets forth
in reasonable detail the Unforeseeable Emergency which would cause the
Participant severe financial hardship, and the number of Comerica Stock
certificates, which the Participant believes to be necessary to alleviate the
financial hardship. In determining whether to grant any requested hardship
distribution, the Committee shall adhere to the requirements of the Income Tax
Regulations referred to in Article III(D)(3) hereof.




                                       V-2

<PAGE>   17

         (5) Stock Certificate Distributions. If, at the time an installment
distribution of an Account in the name of any Participant is scheduled to
commence, the fair market value of such Account does not exceed $5,000 then,
notwithstanding an election by the Participant that such Account be distributed
in installments, the balance of Comerica Stock in such Account shall be
distributed to the Participant in a single distribution on or about the date the
first installment is scheduled to be made.
         B. Designation of Beneficiary. A Participant shall deliver to the
Committee a written designation of Beneficiary(ies) under the Plan, which
designation may from time to time be amended or revoked without notice to, or
consent of, any previously designated Beneficiary.
         (1) Beneficiary Designation Must be Filed Prior to Participant's Death.
No designation of Beneficiary, and no amendment or revocation thereof, shall
become effective if delivered to the Committee after such Participant's death,
unless the Committee shall determine such designation, amendment or revocation
to be valid.
         (2) Absence of Beneficiary. In the absence of an effective designation
of Beneficiary, or if no Beneficiary designated shall survive the Participant,
then the balance of the Account in the name of the Participant shall be paid to
the Participant's estate.






                                       V-3

<PAGE>   18

                                   ARTICLE VI.

                            AMENDMENT OR TERMINATION.

         A. Amendment and Termination of Plan. This Plan may be amended or
terminated at any time in the sole discretion of the Committee by a written
instrument executed by the Committee. No such amendment shall affect the time of
distribution of any of the 3 Year ROE Award earned prior to the time of such
amendment or termination except as the Committee may determine to be necessary
to carry out the purpose of the Plan.
         Written notice of any such amendment or termination shall be given to
each Participant. Upon termination of the Plan, Comerica Incorporated shall
distribute to each Participant or Beneficiary, or direct that the Trustee so
distribute, the amounts which would have been distributed to such Participant or
Beneficiary under the Plan had the Participant's employment with an Employer
terminated at the time of termination of the Plan. In addition, no such
amendment shall make the Trust revocable.










                                      VI-1

<PAGE>   19

                                  ARTICLE VII.

                       AUDITING OF ACCOUNTS AND STATEMENTS

                                TO PARTICIPANTS.

         A. Auditing of Accounts. The Plan shall be audited from time to time as
directed by the Committee by auditors selected by the Committee.
         B. Statements to Participants. Statements will be provided to
Participants under the Plan on at least an annual basis.
         C. Fees and Expenses of Administration. Fees of the Trustee and
expenses of administration of the Plan shall be deducted from Accounts.






                                      VII-1

<PAGE>   20

                                  ARTICLE VIII.

                            MISCELLANEOUS PROVISIONS.

         A. Nonforfeitability of Participant Accounts. Each Participant shall
be fully vested in his or her Account.
         B. Prohibition Against Assignment. Benefits payable to Participants and
their Beneficiaries under the Plan may not be anticipated, assigned (either at
law or in equity), alienated, sold, transferred, pledged or encumbered in any
manner, nor may they be subjected to attachment, garnishment, levy, execution or
other legal or equitable process for the debts, contracts, liabilities,
engagements or acts of any Participant or Beneficiary.
         C. No Employment Contract. Nothing in the Plan is intended to be
construed, or shall be construed, as constituting an employment contract between
the Employer and any Participant nor shall any Plan provision affect the
Employer's right to discharge any Participant for any reason or for no reason.
         D. Successors Bound. The contractual agreement between Comerica
Incorporated and each Participant resulting from the execution of an Irrevocable
Election Form shall be binding upon and inure to the benefit of Comerica
Incorporated, its successors and assigns, and to the Participant and to the
Participant's heirs, executors, administrators and other legal representatives.
         E. Prohibition Against Loans.  The Participant may not borrow any 3
Year ROE Award Deferrals from Comerica Incorporated nor utilize his or her
Account as security for any loan from the Employer.
         F. Administration By Committee. Responsibility for administration of
the Plan shall be vested in the Committee. To the extent permitted by law, the
Committee may






                                     VIII-1

<PAGE>   21

delegate any authority it possesses to the Plan Administrator(s). To the extent
the Committee has delegated authority concerning a matter to the Plan
Administrator(s), any reference in the Plan to the "Committee" insofar as it
pertains to such matter, shall refer likewise to the Plan Administrator(s).
         G. Governing Law and Rules of Construction. This Plan shall be governed
in all respects, whether as to construction, validity or otherwise, by
applicable federal law and, to the extent that federal law is inapplicable, by
the laws of the State of Michigan. Each provision of this Plan shall be treated
as severable, to the end that, if any one or more provisions shall be adjudged
or declared illegal, invalid or unenforceable, this Plan shall be interpreted,
and shall remain in full force and effect, as though such provision or
provisions had never been contained herein. It is the intention of Comerica
Incorporated that the Plan established hereunder be "unfunded" for income tax
purposes and for purposes of Title I of ERISA, and the provisions hereof shall
be construed in a manner to carry out that intention.
         H. Power to Interpret. This Plan shall be interpreted and effectuated
to comply with the applicable requirements of ERISA, the Code and other
applicable tax law principles; and all such applicable requirements are hereby
incorporated herein by reference. Subject to the above, the Committee shall have
power to construe and interpret this Plan, including but not limited to all
provisions of this Plan relating to eligibility for benefits and the amount,
manner and time of payment of benefits, any such construction and interpretation
by the Committee and any action taken thereon in good faith by the Plan
Administrator(s) to be final and conclusive upon any affected party. The
Committee shall also have power to correct any defect, supply any omission, or
reconcile any inconsistency






                                     VIII-2

<PAGE>   22

in such manner and to such extent as the Committee shall deem proper to carry
out and put into effect this Plan; and any construction made or other action
taken by the Committee pursuant to this Article VIII(H) shall be binding upon
such other party and may be relied upon by such other party.
         I.  Effective Date.  The effective date of this amendment and
restatement shall be January 1, 1999, except as otherwise expressly stated
herein.








                                     VIII-3

<PAGE>   1
                                       APPROVED BY BOARD OF DIRECTORS ON 1/20/00

                                                              EXHIBIT 10.20

                              AMENDED AND RESTATED

                              COMERICA INCORPORATED

                  STOCK OPTION PLAN FOR NON-EMPLOYEE DIRECTORS


SECTION 1.  PURPOSE.

The purposes of this Stock Option Plan for Non-Employee Directors are to promote
the continued prosperity of Comerica Incorporated by aligning the long-term
financial interests of the recipients of options hereunder with those of the
shareholders of the Corporation, to provide an additional incentive for such
individuals to remain as directors, and to provide a means through which the
Corporation and its affiliates may attract well-qualified individuals to serve
as directors.


SECTION 2.  DEFINITIONS.

The following words and phrases, wherever capitalized, shall have the following
meanings respectively, unless the context otherwise requires:

A. "Affiliated Bank" means Comerica Bank-Illinois, Comerica Bank-California,
Comerica Bank & Trust, F.S.B., Comerica Bank-Texas or any other financial
institution which is or becomes a member of the controlled group of corporations
within the meaning of Section 1563(a)(1) of the Code (or other successor
provision of the Code defining the term "controlled group of corporations") of
which Comerica Incorporated is the common parent corporation.

B. "Agreement" means a written agreement which sets forth the terms and
conditions of an option grant under the Plan, including any amendment to such
written agreement. Agreements shall be subject to the express terms and
conditions set forth herein.

C. "Board" means the Board of Directors of Comerica Incorporated.

D. "Cause" means any act of (a) fraud or intentional misrepresentation, or (b)
embezzlement, misappropriation or conversion of assets or opportunities of the
Corporation or any Subsidiary.




<PAGE>   2



E. "Change in Control of the Corporation" shall be deemed to have occurred if
(A) any "person" (as such term is used in Sections 13(d) and 14(d) of the
Exchange Act), other than a trustee or other fiduciary holding securities under
an employee benefit plan of the Corporation, is or becomes the "beneficial
owner" (as defined in Rule 13d-3 under the Exchange Act), directly or
indirectly, of securities of the Corporation representing 26% or more of the
combined voting power of the Corporation's then outstanding securities; or (B)
during any period of two consecutive years, individuals who at the beginning of
such period constitute the Board and any new director (other than a director
designated by a person who has entered into an agreement with the Corporation to
effect a transaction described in clauses (A) or (C) of this subsection) whose
election by the Board or nomination for election by the stockholders of the
Corporation was approved by a vote of at least two-thirds (2/3) of the directors
then still in office who either were directors at the beginning of the period or
whose election or nomination for election was previously so approved, cease for
any reason to constitute a majority thereof; or (C) the shareholders of the
Corporation approve a merger or consolidation of the Corporation with any other
corporation, other than a merger or consolidation which would result in the
voting securities of the Corporation outstanding immediately prior thereto
continuing to represent (either by remaining outstanding or by being converted
into voting securities of the surviving entity) at least 75% of the combined
voting power of the voting securities of the Corporation or such surviving
entity outstanding immediately after such merger or consolidation, or the
shareholders of the Corporation approve a plan of complete liquidation of the
Corporation or an agreement for the sale or disposition of all or substantially
all of its assets.

F. "Code" means the Internal Revenue Code of 1986, as amended.

G. "Comerica Bank" means Comerica Bank, a Michigan banking corporation.

H. "Committee" means the Directors Committee. No member of the Committee shall
be eligible to receive discretionary Option grants under Section 5.B. of the
Plan.

I. "Common Stock" means shares of $5.00 par value common stock of Comerica
Incorporated, subject to adjustment pursuant to Section 7.

J. "Corporation" means Comerica Incorporated, a Delaware corporation.

K. "Disabled" or "Disability" means unable to engage in any substantial gainful
activity by reason of any medically determinable physical or mental impairment
which can be expected to result in death or to be of long-continued and
indefinite duration. An individual shall not be considered to be disabled unless
he furnishes proof of the existence thereof in such form as the Committee may
require.

L. "ERISA" means the Employee Retirement Income Security Act of 1974, as from
time to time amended.

M. "Exchange Act" means the Securities Exchange Act of 1934, as amended.

                                       -2-

<PAGE>   3



N. "Exercise Price" means, with respect to each share of Common Stock subject to
an Option, the price at which such share may be purchased from the Corporation
pursuant to the exercise of such Option.

O. "Fair Market Value" means the closing price of the Common Stock on the New
York Stock Exchange as reported on the Composite Tape, or if it is not listed on
the New York Stock Exchange, the closing price on the exchange on which the
Common Stock is then listed, or if not listed on any exchange, then the closing
price reported on the NASDAQ National Market System over-the-counter market; if,
however, there is no trading of the Common Stock on the date in question, then
the closing price of the Common Stock, as so reported, on the last preceding
date on which there was trading shall instead be used to determine Fair Market
Value; if Fair Market Value for any date in question cannot be determined as
hereinabove provided, Fair Market Value shall be determined by the Committee by
whatever method or means the members, in the good faith exercise of their
discretion, at that time shall deem appropriate.

P. "Legal Representative" means the "guardian or legal representative" of the
optionholder as those terms are construed under the Exchange Act who, upon the
Disability or incapacity of an optionholder, shall have acquired on behalf of
the optionholder, by legal proceeding or otherwise, the right to exercise the
optionholder's rights and receive his or her benefits under the Plan.

Q. "Non-Employee Director" means (i) with respect to Section 5.A. of the Plan, a
member of the Board in his capacity as a director of the Corporation, provided
such individual is not an employee of the Corporation or of any Subsidiary of
the Corporation; and (ii) with respect to Section 5.B. of the Plan, a member of
the board of directors of Comerica Bank or any Affiliated Bank in such
individual's capacity as a director of Comerica Bank or any Affiliated Bank,
provided such individual also is a director of the Corporation and is not an
employee of the Corporation or of any Subsidiary of the Corporation.

R. "Option" means the right, granted pursuant to this Plan, of a holder to
purchase shares of Common Stock at the Exercise Price. All options granted under
the Plan shall be "nonstatutory stock options," i.e., options which do not
qualify under Sections 422 or 423 of the Code.

S. "Personal Representative" means the executor, administrator or personal
representative appointed to administer the optionholder's probate estate, or if
the individual has no probate estate, then the successor trustee(s) of any
revocable living trust the individual established during his or her lifetime.

T. "Plan" means the plan set forth herein which shall be known as the "Amended
and Restated Comerica Incorporated Stock Option Plan For Non-Employee
Directors."


                                       -3-

<PAGE>   4



U. "Qualified Domestic Relations Order" means a "qualified domestic relations
order" as defined in the Code or in Title I of ERISA, or in rules promulgated
thereunder.

V. "Subsidiary" means any corporation of which a majority of the outstanding
voting capital stock is owned, directly or indirectly, by the Corporation. With
respect to non-corporate entities, it means any entity in which the Corporation
owns, directly or indirectly, a majority of the equity interest.

SECTION 3.  SHARES AVAILABLE UNDER THE PLAN.

The aggregate number of shares which may be issued and as to which grants of
Options may be made under the Plan is 375,000 shares(1) of the Common Stock,
subject to adjustment as set forth in Section 7. If any Option granted under the
Plan is canceled by mutual consent or terminates or expires for any reason
without having been exercised in full, the number of shares subject thereto
shall again be available for purposes of the Plan. The shares which may be
issued under the Plan may be either authorized but unissued shares or treasury
shares or partly each.

SECTION 4.  ADMINISTRATION OF THE PLAN.

The Plan shall be administered by the Directors Committee (the "Committee"). The
Committee may delegate the day-to-day administration of the Plan to any
individual or individuals it deems appropriate. The Committee shall keep records
of action taken at its meetings or by unanimous written consent. A majority of
the Committee shall constitute a quorum at any meeting, and the acts of a
majority of the members present at any meeting at which a quorum is present, or
acts approved in writing by all the members of the Committee, shall constitute
acts of the Committee.

Subject to the remaining provisions of this Section, the Committee shall have
full authority to carry out the provisions of the Plan, including authority to
interpret the Plan and prescribe such rules, regulations and procedures in
connection with the operation of the Plan as it shall deem to be necessary and
advisable for the administration of the Plan consistent with the purposes of the
Plan. All questions of interpretation and application of the Plan, or as to
Options granted under the Plan, shall be subject to the determination of the
Committee, which shall be final and binding.

With respect to Section 5.A. of the Plan, the selection of the Non-Employee
Directors to whom Options are to be granted, the timing of such grants, the
number of shares subject to any Option, the exercise price of any Option, the
periods during which any Option may be exercised and the term of any Option
shall be as set forth in those provisions hereof

- --------------

         (1) This number of shares reflects the 1998 "3 for 2" stock split.

                                       -4-

<PAGE>   5



which relate to Section 5.A. of the Plan, and the Committee shall have no
discretion as to such matters.

With respect to Section 5.B. of the Plan, the Committee shall have exclusive
authority to grant Options under the Plan, to select the Non-Employee Directors
who will receive Options, to determine the number of Options to be granted to
any Non-Employee Director and the terms of any Option grant, and to determine
the time when any Options will be granted.

SECTION 5.  GRANT OF STOCK OPTIONS.

A. Automatic Annual Grants. On the day each annual meeting of the shareholders
of the Corporation is held, each Non-Employee Director shall automatically and
without further action by the Board or the Committee be granted an Option to
purchase 1,500 shares(2) of Common Stock, subject to adjustment and substitution
as set forth in Section 7. If the number of shares then remaining available for
the grant of Options under the Plan is not sufficient for each Non-Employee
Director to be granted an Option for 1,500 shares (or the number of adjusted or
substituted shares pursuant to Section 7), then each Non-Employee Director shall
be granted an Option for a number of whole shares equal to the number of shares
then remaining available divided by the number of Non-Employee Directors,
disregarding any fractions of a share.

B. Discretionary Grants. Any Non-Employee Director shall be eligible to receive
whatever number of Options the Committee, in its sole discretion, chooses to
grant to him or her from time to time, but shall not have a right to receive any
such grants.

SECTION 6.  TERMS AND CONDITIONS APPLICABLE TO OPTION GRANTS.

Options granted under the Plan shall be subject to the following terms and
conditions:

A. Exercise Price. The Exercise Price with respect to each share of Common Stock
covered by the Option shall be 100% of the Fair Market Value of such share on
the date the Option is granted.

B. Payment of Exercise Price. The Exercise Price for each Option shall be paid
in full upon exercise and shall be payable in cash (including check, bank draft
or money order); provided, however, that in lieu of cash, the individual
exercising the Option may pay the Exercise Price, in whole or in part, by
delivering to the Corporation shares of Common Stock having a Fair Market Value
on the date of exercise of the Option equal to the Exercise Price of the shares
being purchased: except that (i) any portion of the Exercise Price representing
a fraction of a share shall in any event be paid in cash, and (ii) no

- ---------------

         (2) This number of shares reflects the 1998 "3 for 2" stock split.

                                       -5-

<PAGE>   6



shares of Common Stock which have been held for less than six months may be
delivered in payment of the Exercise Price of an Option. Delivery of shares may
also be accomplished through the effective transfer to the Corporation of shares
held by a broker or other agent. The Corporation will also cooperate with any
individual exercising an Option who participates in a cashless exercise program
of a broker or other agent under which all or part of the shares received upon
exercise of the Option are sold through the broker or other agent or under which
the broker or other agent makes a loan to such individual. Notwithstanding the
foregoing, the exercise of the Option shall not be deemed to occur and no shares
of Common Stock will be issued by the Corporation upon exercise of the Option
until the Corporation has received payment of the Exercise Price in full. The
date of exercise of an Option shall be determined under procedures established
by the Committee, and as of the date of exercise the individual exercising the
Option shall be considered for all purposes to be the owner of the shares with
respect to which the Option has been exercised. Payment of the Exercise Price
with shares shall not increase the number of shares of Common Stock which may be
issued under the Plan as provided in Section 3.

C. Term of Options and Vesting. No Option shall be exercisable during the first
year of its term except as provided in Section 6.E., upon the occurrence of a
Change in Control of the Corporation, or as the Committee otherwise determines.
Each Option shall be exercisable with respect to all of the shares subject
thereto from and after the first anniversary of the date of its grant. Subject
to Section 6.E. which provides for earlier termination of an Option under
certain circumstances, each Option shall expire ten years after the date of
grant. An Option, to the extent exercisable at any time, may be exercised in
whole or in part.

Notwithstanding any other provision contained in the Plan, in case any Change in
Control of the Corporation occurs, all outstanding Options shall become
immediately and fully exercisable whether or not otherwise exercisable by their
terms.

D. Restrictions on Transferability. No Option shall be transferable by the
grantee otherwise than by will, or if the grantee dies intestate, by the laws of
descent and distribution of the state of domicile of the grantee at the time of
death or pursuant to a Qualified Domestic Relations Order. All Options shall be
exercisable during the lifetime of the grantee only by the grantee or by the
grantee's Legal Representative. These restrictions on transferability shall not
apply to the extent such restrictions are not at the time required for the Plan
to continue to meet the requirements of Rule 16b-3 under the Exchange Act, or
any successor Rule.

E. Separation From Board Service. If a grantee ceases to be a director of the
Corporation, Comerica Bank or any Affiliated Bank, any outstanding Options the
grantee then holds shall be exercisable in accordance with the following
provisions:

         1.(a) Retirement, Disability, or Other Separation. If the grantee's
         separation is due to his or her retirement, Disability, or any other
         circumstance not covered in

                                       -6-

<PAGE>   7



         Sections 6.E.1.(b) or 6.E.2. below, any outstanding Option held by such
         grantee shall be exercisable by the grantee, or by his or her Legal
         Representative or Personal Representative, as the case may be (but only
         if exercisable by the grantee immediately prior to ceasing to be a
         director), at any time prior to the expiration date of such Option; and

         1.(b) Death. If the grantee's separation is due to his or her death,
         any outstanding Option held by such grantee shall be exercisable by the
         grantee, or by his or her Legal Representative or Personal
         Representative, as the case may be, at any time prior to the expiration
         date of such Option or within one year after the date the grantee
         ceases to be a director, whichever period is shorter; and

         2.    Resignation or Removal for Cause. If the grantee's separation is
         due to his or her resignation or removal from office for Cause, any
         outstanding Option held by the grantee which is exercisable by the
         grantee immediately prior to his or her resignation or removal shall be
         exercisable by the grantee for 90 days following such resignation or
         removal (or by his Personal Representative or Legal Representative
         during the remainder of such 90-day period if he or she dies or becomes
         Disabled during such period), but not beyond the original term of such
         Option.

An Option held by a grantee who has ceased to be a director of the Corporation,
Comerica Bank or any Affiliated Bank shall expire at the end of the applicable
exercise period, if any, specified in this Section 6.E.

F. Option Agreements. All grants of Options shall be evidenced by an Agreement
which shall be executed on behalf of the Corporation by a representative of the
Committee.

G. Conditions Applicable to Grants of Options. The obligation of the Corporation
to issue shares of Common Stock under the Plan shall be subject to (i) the
effectiveness of a registration statement under the Securities Act of 1933, as
amended, with respect to such shares, if deemed necessary or appropriate by
counsel for the Corporation; (ii) the condition that any shares to be issued
shall have been listed (or authorized for listing upon official notice of
issuance) upon each stock exchange, if any, on which the Common Stock may then
be listed; and (iii) all other applicable laws, regulations, rules and orders
which may then be in effect.

Subject to the foregoing provisions of this Section 6 and the other provisions
of the Plan, any Option granted under the Plan shall be subject to such
restrictions and other terms and conditions, if any, as shall be determined by
the Committee in its discretion and set forth in an Agreement; except that (i)
with respect to automatic grants under Section 5.A. hereof, in no event shall
the Committee or the Board have any power or authority which would cause the
Plan to fail to be a plan described in Rule 16b-3(c)(2) (ii) (or old Rule 16b-
3(b)(1)(iii) so long as such rule remains effective), or any successor Rule; and
(ii) with respect to discretionary grants under Section 5.B. hereof, in no event
shall any member

                                       -7-

<PAGE>   8



of the Committee be other than a "disinterested person" under Rule
16b-3(c)(2)(i) (or Rule 16b-3(b)(1)(ii) so long as such rule remains effective).
Furthermore, transactions under this Plan are intended to comply with all
applicable conditions of Rule 16b-3 or its successors under the 1934 Act. To the
extent any provision of the Plan or action by the Committee fails to so comply,
it shall be deemed null and void, to the extent permitted by law and deemed
advisable by the Committee.

SECTION 7.  ADJUSTMENT AND SUBSTITUTION OF SHARES.

In the event any change occurs in the number of shares of Common Stock
outstanding as a result of any stock split, stock dividend, recapitalization,
merger, consolidation, reorganization, combination or exchange of shares,
split-up, split-off, spin off, liquidation or other similar change in
capitalization, or any distribution to common shareholders other than cash
dividends, the number or kind of shares that may be issued under the Plan
pursuant to Section 3, including shares covered by existing Options, shall be
automatically adjusted to preserve the proportionate interests of the grantees
in the Corporation as represented by their outstanding Options, and the
proportionality of the share pool under the Plan in relation to the total number
of shares outstanding.

If the outstanding shares of the Common Stock shall be changed into or become
exchangeable for a different number or kind of shares of stock or other
securities of the Corporation or another corporation, whether through
reorganization, reclassification, recapitalization, stock split-up, combination
of shares, merger or consolidation, then there shall be substituted for each
share of the Common Stock set forth in Section 3, including shares covered by
existing Options, the number and kind of shares of stock or other securities
into which each outstanding share of Common Stock shall be so changed or for
which each such share shall become exchangeable.

In case of any adjustment or substitution as provided for in the first two
paragraphs of this Section 7, the aggregate Exercise Price for all shares
subject to each then outstanding Option prior to such adjustment or substitution
shall be the aggregate Exercise Price for all shares of stock or other
securities (including any fraction) into which such shares shall have been
converted or which shall have been substituted for such shares. Any new Exercise
Price per share shall be carried to at least three decimal places with the last
decimal place rounded upwards to the nearest whole number.

If the outstanding shares of Common Stock shall be changed in value by reason of
any spin-off, split-off or split-up, or dividend in partial liquidation,
dividend in property other than cash or extraordinary distribution to holders of
Common Stock, the Committee shall make any adjustments to any then outstanding
Option which it determines are equitably required to prevent dilution or
enlargement of the rights of grantees which would otherwise result from any such
transaction.


                                       -8-

<PAGE>   9



No adjustment or substitution provided for in this Section 7 shall require the
Corporation to issue or sell a fraction of a share or other security.
Accordingly, all fractional shares or other securities which result from any
such adjustment or substitution shall be eliminated and not carried forward to
any subsequent adjustment or substitution.

Except as provided in this Section 7, a grantee shall have no rights by reason
of the issuance by the Corporation of stock of any class or securities
convertible into stock of any class, any subdivision or consolidation of shares
of stock of any class, the payment of any stock dividend or any other increase
or decrease in the number of shares of stock of any class.

SECTION 8.  EFFECT OF THE PLAN ON THE RIGHTS OF THE CORPORATION, ITS AFFILIATES
            AND SHAREHOLDERS.

Nothing in the Plan, in any Option granted under the Plan, or in any Agreement
shall confer any right to any person to continue as a director of the
Corporation, Comerica Bank or any Affiliated Bank, or interfere in any way with
the rights of the shareholders of the Corporation, the Board or the board of
directors of Comerica Bank or any Affiliated Bank to elect and remove directors.

SECTION 9.  AMENDMENT AND TERMINATION.

The right to amend the Plan at any time and from time to time and the right to
terminate the Plan at any time are hereby specifically reserved to the Board;
provided, however, that no such termination shall result in the cancellation of
any outstanding Options theretofore granted under the Plan; and provided further
that no amendment of the Plan shall: (i) be made without shareholder approval if
shareholder approval of the amendment is at the time required for Options
granted under the Plan to directors of the Corporation, Comerica Bank or any
Affiliated Bank to qualify for the exemption from Section 16(b) of the Exchange
Act provided by Rule 16b-3, or by any successor Rule, or by the rules of any
stock exchange on which the Common Stock may then be listed; (ii) amend more
than once every six months the provisions of the Plan relating to grants under
Section 5.A. of the Plan including the selection of the directors to whom
Options are to be granted under Section 5.A., the timing of such grants, the
number of shares which will become subject to any Option granted under Section
5.A., the Exercise Price of any Option granted under Section 5.A., the periods
during which any Option granted under Section 5.A. may be exercised and the term
of any such Option other than to comport with changes in the Code or ERISA, or
the rules and regulations thereunder; or (iii) otherwise amend the Plan in any
manner that would cause Options granted under the Plan to directors of the
Corporation, Comerica Bank or any Affiliated Bank not to qualify for the
exemption provided by Rule 16b-3, or any successor Rule. No amendment or
termination of the Plan shall, without the written consent of the holder of an
Option theretofore granted under the Plan, adversely affect the rights of such
holder with respect thereto.

                                       -9-

<PAGE>   10


Notwithstanding anything contained in the preceding paragraph or in any other
provision of the Plan or in any Agreement, the Board shall have the power to
amend the Plan in any manner deemed necessary or advisable so that Options
granted under the Plan qualify for the exemption provided by Rule 16b-3 (or any
successor rule relating to exemption from Section 16(b) of the 1934 Act), and
any such amendment shall, to the extent deemed necessary or advisable by the
Board, be applicable to any outstanding Options theretofore granted under the
Plan notwithstanding any contrary provisions in any Agreement. In the event of
any such amendment to the Plan, the holder of any Option outstanding under the
Plan shall, upon request of the Committee and as a condition to the
exercisability of such Option, execute a conforming amendment in the form
prescribed by the Committee to the Agreement referred to in Section 6.F. within
such reasonable time as the Committee shall specify in such request.

SECTION 10. EFFECTIVE DATE AND DURATION OF PLAN.

The Plan shall become effective upon approval by the affirmative votes of the
holders of a majority of the shares of Common Stock present, or represented, and
entitled to vote at a duly called and convened meeting of shareholders. If
approval is obtained at the Annual Meeting of Shareholders in 1995, the Plan
shall be effective on the date of the meeting and the first Options shall be
granted on that date following the meeting. The last Options to be granted under
the Plan shall be granted on the day of the Annual Meeting of Shareholders of
the Corporation in the year 2004.



























                                      -10-


<PAGE>   1
                                                                   EXHIBIT 10.21










                    COMERICA INCORPORATED 1999 DISCRETIONARY
                           DIRECTOR FEE DEFERRAL PLAN



















<PAGE>   2




                              COMERICA INCORPORATED
                  1999 DISCRETIONARY DIRECTOR FEE DEFERRAL PLAN



                                TABLE OF CONTENTS


<TABLE>
<S>                                                                         <C>
SECTION I - PURPOSE............................................................1

SECTION II - DEFINITIONS.......................................................1

SECTION III - ELIGIBILITY......................................................2

SECTION IV - PROCEDURES RELATING TO DEFERRALS..................................2

SECTION V - CREDITING OF EARNINGS TO ACCOUNTS..................................4

SECTION VI - DISTRIBUTION OF DEFERRED FEES.....................................5

SECTION VII - DESIGNATION OF BENEFICIARY.......................................5

SECTION VIII - MISCELLANEOUS PROVISIONS........................................6


EXHIBIT A1 - NOTICE OF ELECTION TO DEFER....................................A1-1

EXHIBIT A2 - NOTICE OF ELECTION TO DEFER....................................A2-1

EXHIBIT B - NOTICE OF CANCELLATION OF DEFERRAL ELECTION......................B-1

EXHIBIT C - REALLOCATION OF INVESTMENT.......................................C-1

EXHIBIT D - BENEFICIARY DESIGNATION FORM.....................................D-1
</TABLE>



                                      -i-
<PAGE>   3


                              COMERICA INCORPORATED
                  1999 DISCRETIONARY DIRECTOR FEE DEFERRAL PLAN


SECTION I - PURPOSE

The purpose of this Plan is to allow an eligible director to defer compensation,
under the conditions provided herein, into a Mutual Fund Unit Account. The funds
in each eligible director's Mutual Fund Unit Account are hypothetically invested
in mutual funds designated by the Committee from time to time. No more than
one-half of the Director Fees of each Company director may be allocated, on the
director's behalf, into a Mutual Fund Unit Account. Any director of any
Subsidiary of the Company or an Advisory Board may defer all or a portion of his
or her Director Fees into a Mutual Fund Unit Account.

SECTION II - DEFINITIONS

The following words and phrases, wherever capitalized, shall have the following
meanings respectively:

         A. "Advisory Board" means a special board of directors appointed to
advise a Subsidiary of the Company.

         B. "Beneficiary(ies)" means such individual(s) or entity(ies)
designated on the most recent Beneficiary Designation the director has submitted
to the Corporate Secretary.

         C. "Beneficiary Designation" means a beneficiary designation on the
form attached hereto as Exhibit "C", as such form may be modified by the Plan
Administrator from time to time.

         D. "Cancellation of Deferral Election" means a written notice of
cancellation of election to defer unearned fees on the form attached hereto as
Exhibit "B", as such form may be modified by the Plan Administrator from time to
time.

         E. "Code" means the Internal Revenue Code of 1986, as amended.

         F. "Committee" means the Directors' Committee of the Board of
Directors of Comerica Incorporated.

         G. "Company" means Comerica Incorporated, a Delaware corporation.

         H. "Corporate Secretary" means the Secretary of Comerica Incorporated.

         I. "Deferral Election" means a written notice to defer the payment of
director fees on one of the applicable forms attached hereto as Exhibits "A1 or
A2", as such form may be modified by the Plan Administrator from time to time.


                                      -1-
<PAGE>   4


         J. "Director Fees" means a director's annual retainer, fees for
attending board meetings, fees for attending meetings of any committee of the
board, if any, and fees for serving as chairman of any committee of the board.

         K. "Mutual Fund Unit Account" means an account established under
Section V of this Plan in the name of each director to record those fees that
have been deferred to such account and earnings thereon.

         L. "Participant" means an eligible director for whom a Mutual Fund Unit
Account is maintained under the Plan.

         M. "Plan" means the Comerica Incorporated 1999 Discretionary Director
Fee Deferral Plan," the provisions of which are set forth herein, as it may be
amended from time to time.

         N. "Plan Administrator" means one or more individuals appointed by the
Committee to handle the day-to-day administration of the Plan.

         O. "Reallocation Form" means a written notice to reallocate a deferred
Director Fees on the form attached hereto as Exhibit C, as such form may be
modified by the Plan Administrator from time to time.

         P. "Subsidiary" means any corporation, partnership or other entity, a
majority of whose stock or interests is owned by Comerica Incorporated.

         Q. "Unforeseeable Emergency" means a severe financial hardship to the
Participant resulting from a sudden and unexpected illness or accident of the
Participant or of a dependent (within the meaning of Code Section 152(a)) of the
Participant, loss of the Participant's property due to casualty, or other
similar extraordinary and unforeseeable circumstances arising as a result of
events beyond the control of the Participant.

SECTION III - ELIGIBILITY

Each director of the Company, each director of any Subsidiary of the Company and
each director of an Advisory Board of a Subsidiary of the Company shall be
eligible to participate in the Plan provided any such director is not an
employee of the Company or an employee of any Subsidiary of the Company.

SECTION IV - PROCEDURES RELATING TO DEFERRALS

         A.    Deferral of Directors Compensation.

               1. Deferral for Directors of the Company. No more than one-half
of the Director Fees of each of the Company's directors shall be subject to a
Deferral Election (other than length of deferral and schedule of pay-out) under
this Plan. The remainder of the Directors' Fees of each Company director shall
be deferred automatically as provided in the Comerica Incorporated 1999 Common
Stock Director Fee Deferral Plan. The minimum period of deferral for Director
Fees deferred pursuant to this Section IV (A) shall be the lesser of the

                                      -2-

<PAGE>   5

number of years remaining before regular retirement or five years. In the event
a Company director does not indicate the period of deferral for such fees on the
Deferral Election, such fees shall be deferred for a period of five years and
paid out in a single lump sum.

               2. Deferral for Directors of any Subsidiary. Directors of any
Subsidiary of the Company may defer any portion of their compensation under this
Plan or the Comerica Incorporated 1999 Common Stock Director Fee Deferral Plan.
The minimum period of deferral for Director Fees deferred pursuant to this
Section IV (A) shall be the lesser of the number of years remaining before
regular retirement or five years. In the event a director of any Subsidiary of
the Company does not indicate the period of deferral, such fees shall be
deferred for a period of five years and paid out in a single lump sum.

               3. Deferral for Directors of any Advisory Board. Directors of an
Advisory Board of any Subsidiary of the Company may defer any portion of their
compensation under this Plan or the Comerica Incorporated 1999 Common Stock
Director Fee Deferral Plan. The minimum period of deferral for Director Fees
deferred pursuant to this Section IV (A) shall be the lesser of the number of
years remaining before regular retirement or five years. In the event a director
of an Advisory Board of any Subsidiary of the Company does not indicate the
period of deferral, such fees shall be deferred for a period of five years and
paid out in a single lump sum.

         B. Elective Deferral Procedures. Any eligible director wishing to defer
Director Fees which are subject to a Deferral Election must submit a Deferral
Election to the Corporate Secretary at 500 Woodward, MC 3391, Detroit, Michigan
48226-3391 or such other person designated by the Chief Executive Officer of the
Company from time to time, prior to the beginning of the service year during
which the fees are to be earned (from annual meeting of shareholders to annual
meeting of shareholders). However, any newly-appointed or newly-elected director
may submit a Deferral Election within sixty days of his or her appointment or
election. A Deferral Election pursuant to this Plan may cover all or a portion
of Director Fees which may be deferred pursuant to this Plan but shall not cover
amounts subject to an automatic allocation pursuant to the Comerica Incorporated
1999 Common Stock Director Fee Deferral Plan, and shall designate in which
mutual fund and in what proportions the Director Fees under this Plan so
deferred will be recorded.

        1.    Irrevocability. A director may not modify or revoke a Deferral
              Election (except to the extent permitted to reallocate among
              investment options), once the director has performed the services
              that entitle the director to the fees. If a director has submitted
              a Deferral Election relating to fees to be earned in the future,
              he or she may modify such election by submitting a new Deferral
              Election prior to the beginning of the calendar year in which the
              fees will be earned. Any such Deferral Election will supersede any
              previous Deferral Election as it relates to fees to be earned in
              future years.

        2.    Cancellation. A Deferral Election may be canceled by submitting a
              Cancellation of Deferral Election in form and substance as
              provided in Exhibit B attached hereto, as such form may be
              modified by the Plan Administrator from time to time. A director
              who cancels a Deferral Election may not submit a new Deferral
              Election


                                      -3-

<PAGE>   6


               before at least twelve months have elapsed from the effective
               date of the cancellation.

SECTION V - CREDITING OF EARNINGS TO ACCOUNTS

Director Fees which have been deferred under this Plan shall be credited to
Mutual Fund Unit Accounts created by and recorded on the books of the Company
from time to time. As of the last day of each month or on a more frequent basis
if practicable, each Mutual Fund Unit Account shall be adjusted as follows:


         A. Mutual Fund Unit Account shall be "hypothetically invested" in one
of the mutual funds offered for investment by the Committee and designated by
each director. In the event the sponsor of said mutual fund ("Sponsor") has
established a rabbi trust for its own benefit to fund the Sponsor's obligations
under this Plan, the purchase price for the mutual fund shares shall be the
actual price of the shares the Sponsor purchases on the open market on the day
of the deferral of the Director Fees. In the event that the Sponsor has not
established a rabbi trust, the purchase price shall be based upon the closing
price for the mutual fund shares on the exchange of which the mutual fund is
listed on the day that the Director Fees would have otherwise been paid to the
director had they not been deferred. No director shall have any right to vote
any shares of the Sponsor's mutual funds held in the rabbi trust except to the
extent otherwise permitted by the terms of the rabbi trust.

         1.    The account shall first be charged with any distributions made
               during the month or on a more frequent basis if practicable;

         2.    The account shall then be credited with earnings, gains and
               losses for the month based upon the closing price for the
               designated mutual fund on the exchange of which said fund is
               listed as of the last day of such month or on a more frequent
               basis if practicable, plus any dividends paid during such period.

         3.    The account shall then be credited with the amount, if any, of
               Director Fees deferred and designated to be credited to such
               account during such month or on a more frequent basis if
               practicable.

         B. Reallocation of Investment Options. Each director may reallocate all
or a portion of his or her Mutual Fund Unit Account to change the percentage(s)
of an investment and/or designate an alternate mutual fund as an investment
option by submitting a Reallocation Form in form and substance as provided in
Exhibit "C" to the Corporate Secretary or such other person designated by the
Chief Executive Officer of the Company from time to time. The Plan Administrator
may delay any reallocation request because of a trading blackout period or any
other trading restriction which may be imposed on the Company, whether voluntary
or involuntary. No transfers between investment options will be allowed if
prohibited by the rules applicable to the particular mutual fund from or to
which a transfer is to be made or by rules adopted by the Plan Administrator and
communicated to the directors.



                                       -4-

<PAGE>   7




SECTION VI - DISTRIBUTION OF DEFERRED FEES

         A. Time and Manner. Distribution of each Participant's account shall be
made in cash at such time and in such manner, i.e., a lump sum or installments,
as the Participant has specified in the Deferral Election(s) submitted to the
Corporate Secretary or as otherwise required by Section IV(A).

         B. Installment Payments. Installment payments under an installment
payment option may not exceed ten years. The amount of each installment payment
shall be determined by multiplying the balance of the Mutual Fund Unit Account
on the date the installment is scheduled to be paid by a fraction, the numerator
of which is one and the denominator of which is the number of unpaid
installments remaining at such time. If a Participant who is receiving
installment payments dies prior to receiving the balance of his or her account,
the unpaid balance shall be paid in one lump sum to the Participant's
Beneficiary(ies) not later than the 15th day of the month following the month in
which the Participant's death occurred.

         C. Hardship Distributions. In the event of an Unforeseeable Emergency
involving a Participant which occurs prior to distribution of the entire balance
of the Participant's Mutual Fund Unit Account, the Committee may, in its sole
discretion, distribute to the Participant in a single sum an amount equal to
such portion of such account as shall be necessary, in the judgment of the
Committee, to alleviate the financial hardship occasioned by the Unforeseeable
Emergency. Any Participant desiring a distribution under the Plan on account of
an Unforeseeable Emergency shall submit to the Committee a written request for
such distribution which sets forth in reasonable detail the Unforeseeable
Emergency which would cause the Participant severe financial hardship, and the
amount which the Participant believes to be necessary to alleviate the financial
hardship. In determining whether to grant any requested hardship distribution,
the Committee shall adhere to the requirements of Section 1.457-2(h)(4) of the
Income Tax Regulations (or to any successor regulations dealing with the same
subject matter), the provisions of which are incorporated herein by reference.

         D. Cash Out Distributions. If, at the time an installment distribution
of a Mutual Fund Unit Account in the name of any Participant is scheduled to
commence, the fair market value of such account does not exceed $10,000, then,
notwithstanding an election by the Participant that such account be distributed
in installments, the balance of such account shall be distributed to the
Participant in a single sum on or about the date the first installment is
scheduled to be made.

SECTION VII - DESIGNATION OF BENEFICIARY

Upon becoming a Participant of the Plan, each director shall submit to the
Corporate Secretary or such other person designated by the Chief Executive
Officer of the Company from time to time a Beneficiary Designation on the form
attached as Exhibit "D" designating one or more Beneficiaries to whom payments
otherwise due the Participant shall be made in the event of the Participant's
death before distribution of the Participant's Mutual Fund Unit Account has been
completed. A Beneficiary Designation will be effective only if it is signed by
the Participant and submitted to the Corporate Secretary before the
Participant's death.

                                       -5-

<PAGE>   8



Any Beneficiary Designation submitted to the Corporate Secretary will supersede
any previous Beneficiary Designation so submitted. If the primary beneficiary
shall predecease the Participant or the primary beneficiary and the Participant
die in a common disaster under such circumstances that it is impossible to
determine who survived the other, amounts remaining unpaid at the time of the
Participant's death shall be paid to the alternate beneficiary(ies) who survive
the Participant. If there are no alternate beneficiaries living or in existence
at the date of the Participant's death, the balance of the account shall be paid
in one lump sum to the legal representative of the Participant's estate.

SECTION VIII - MISCELLANEOUS PROVISIONS

         A. Nonalienation of Benefits. Neither the Participant nor any
Beneficiary designated by him or her shall have any right to alienate, assign,
or encumber any amount that is or may be payable hereunder, nor may any such
amount be subject to attachment, garnishment, levy, execution or other legal or
equitable process for the debts, contracts, liabilities, engagements or acts of
any Participant or Beneficiary.

         B. Administration of Plan. Full power and authority to construe,
interpret, and administer the Plan shall be vested in the Directors' Committee
of the Board of Directors of the Company. To the extent permitted by law, the
Committee may delegate any authority it possesses to the Plan Administrator. To
the extent the Committee has delegated authority concerning a matter to the Plan
Administrator, any reference in the Plan to the "Committee" insofar as it
pertains to such matter, shall refer likewise to the Plan Administrator.
Decisions of the Committee shall be final, conclusive, and binding upon all
parties.

         C. Amendment or Termination. The Board of Directors of the Company may
amend or terminate this Plan at any time. Any amendment or termination of this
Plan shall not affect the rights of Participants or Beneficiaries to the amounts
in the Mutual Fund Unit Account of such amendment or termination. The Plan
Administrator may make any amendments to the Plan, including forms under the
Plan, recommended by the Company's legal counsel which are necessary or
appropriate to keep the Plan and forms in compliance with applicable laws. The
Company reserves the right to accelerate distribution of fees deferred hereunder
in the event the Plan is terminated.

         D. Effective Date. This Plan is intended to constitute an amendment and
restatement of a prior plan maintained by the Company captioned "Comerica
Incorporated Director Fee Deferral Plan". The Plan was approved by the Board of
Directors of Company on May 21, 1999. The version of the Plan contained in this
document shall be effective to defer monies to be earned from and after January
1, 1997, and the earnings rate contained in this version of the Plan shall apply
to existing accounts under the Plan beginning January 1, 1997. Except for the
earnings rate, monies deferred under prior versions of the Plan shall remain
subject to prior deferral elections.

         E. Statements to Participants. Statements will be provided to
Participants under the Plan on at least an annual basis.


                                       -6-

<PAGE>   9



         F. Nonforfeitability of Participant Accounts. Each Participant shall be
fully vested in his or her Mutual Fund Unit Account created by Company from time
to time.

         G. Successors Bound. The contractual agreement between Comerica
Incorporated and each Participant resulting from the execution of a Deferral
Election shall be binding upon and inure to the benefit of Comerica
Incorporated, its successors and assigns, and to the Participant and to the
Participant's heirs, executors, administrators and other legal representatives.

         H. Governing Law and Rules of Construction. This Plan shall be governed
in all respects, whether as to construction, validity or otherwise, by
applicable federal law and, to the extent that federal law is inapplicable, by
the laws of the State of Michigan. Each provision of this Plan shall be treated
as severable, to the end that, if any one or more provisions shall be adjudged
or declared illegal, invalid or unenforceable, this Plan shall be interpreted,
and shall remain in full force and effect, as though such provision or
provisions had never been contained herein. It is the intention of Comerica
Incorporated that the Plan established hereunder be "unfunded" for income tax
purposes, whether or not the Company establishes a rabbi trust, and the
provisions hereof shall be construed in a manner to carry out that intention.

         I. Ownership of Fee Deferrals. Title to and beneficial ownership of any
assets, of whatever nature, which may be allocated by Comerica Incorporated to
any Mutual Fund Unit Account in the name of any Participant shall at all times
remain with Comerica Incorporated, and no Participant or Beneficiary shall have
any property interest whatsoever in any specific assets of Comerica Incorporated
by reason of the establishment of the Plan. The rights of each Participant and
Beneficiary hereunder shall be limited to enforcing the unfunded, unsecured
promise of Comerica Incorporated to pay benefits under the Plan, and the status
of any Participant or Beneficiary shall be that of an unsecured general creditor
of Comerica Incorporated.


                                       -7-

<PAGE>   10



                                                                    EXHIBIT "A1"


                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLANS

               FORM APPLICABLE TO COMERICA INCORPORATED DIRECTORS

                         NOTICE OF ELECTION TO DEFER AND
                    DISTRIBUTION OF DEFERRED DIRECTORS' FEES

A DIRECTOR WHO WISHES TO DEFER FEES PURSUANT TO THE COMERICA INCORPORATED 1999
COMMON STOCK DIRECTOR FEE DEFERRAL PLAN OR COMERICA INCORPORATED 1999
DISCRETIONARY DIRECTOR FEE DEFERRAL PLAN (COLLECTIVELY CALLED "PLANS") SHOULD
CHECK APPLICABLE BOXES,
SIGN AND DATE THE FORM AND RETURN IT TO:

                                ALBERT P. TAYLOR
                              COMERICA INCORPORATED
                                500 WOODWARD AVE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382

A.        I SERVE AS DIRECTOR ON THE COMERICA INCORPORATED BOARD.

B.        ELECTION TO DEFER FEES. PURSUANT TO PROVISIONS OF THE ABOVE REFERENCED
PLANS, I HEREBY ELECT TO HAVE THE FEES WHICH ARE PAYABLE TO ME FOR RENDERING
SERVICES AS A MEMBER OF THE BOARD OF DIRECTORS OF COMERICA INCORPORATED DEFERRED
IN THE MANNER SPECIFIED BELOW. I UNDERSTAND THAT AT LEAST ONE-HALF OF MY
DIRECTOR FEES SHALL BE DEFERRED INTO THE COMERICA COMMON STOCK FUND. I
UNDERSTAND AND AGREE THAT THIS ELECTION SHALL BECOME EFFECTIVE ON THE DATE OF
THE ANNUAL MEETING OF SHAREHOLDERS IMMEDIATELY FOLLOWING RECEIPT OF THIS NOTICE
OF ELECTION BY THE OFFICE OF THE CHAIRMAN OF COMERICA INCORPORATED OR ON THE
FIRST DAY OF THE MONTH FOLLOWING RECEIPT BY SUCH IF I AM A NEWLY ELECTED
DIRECTOR OF COMERICA INCORPORATED. I UNDERSTAND THAT THIS ELECTION SHALL BE
IRREVOCABLE WITH RESPECT TO FEES ONCE I HAVE PERFORMED THE SERVICES WHICH
ENTITLE ME TO RECEIVE SUCH FEES. THIS ELECTION SHALL CONTINUE IN EFFECT UNTIL I
MODIFY OR REVOKE IT.

C.       PERCENTAGE OF FEES TO BE DEFERRED:

MANDATORY                           50%     COMERICA COMMON STOCK FUND








                                      A1-1

<PAGE>   11



DISCRETIONARY
(SELECT UP TO 50%)
                           ____     COMERICA COMMON STOCK FUND

                           ____     MUNDER INDEX 500 FUND

                           ____     MUNDER BOND FUND

                           ____     MUNDER SHORT TERM BOND FUND

                           ____     MUNDER SMALL COMPANY GROWTH FUND

                           ____     MUNDER CASH INVESTMENT FUND

D.       YEAR DISTRIBUTION OF DEFERRED FEES IS TO COMMENCE (MUST BE A MINIMUM OF
         5 YEARS, EXCEPT IN THE CASE OF RETIREMENT, IN WHICH CASE PAYMENTS MAY
         BEGIN IN THE YEAR OF RETIREMENT): 20__

PAYMENTS WILL BE MADE OR COMMENCE ON MAY 30TH OF THE YEAR SELECTED.


E.       PAYMENT METHOD DESIRED:

         ___   LUMP SUM

         ___   INSTALLMENTS OVER _____ YEARS (YOU MAY CHOOSE 2, 5 OR 10 YEARS).
               (THE BALANCE OF ANY FEE DEFERRAL ACCOUNT WILL BE DISTRIBUTED IN
               ONE LUMP SUM TO THE DIRECTOR'S DESIGNATED BENEFICIARY IF THE
               DIRECTOR DIES BEFORE RECEIPT OF ALL INSTALLMENT PAYMENTS).


         FREQUENCY OF INSTALLMENTS:

         ___   ANNUALLY

         ___   EVERY 3 MONTHS

DATE:    MAY 21, 1999                                __________________________
         ------------
                                                     SIGNATURE OF DIRECTOR

Name           _______________________________

Address        _______________________________

               _______________________________

Social Security # __________________________



                                      A1-2

<PAGE>   12



                                                                    EXHIBIT "A2"

                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLANS

                  FORM APPLICABLE TO BANK OR ADVISORY DIRECTORS

                         NOTICE OF ELECTION TO DEFER AND
                    DISTRIBUTION OF DEFERRED DIRECTORS' FEES

A DIRECTOR WHO WISHES TO DEFER FEES PURSUANT TO THE TERMS OF THE COMERICA
INCORPORATED 1999 COMMON STOCK DIRECTOR FEE DEFERRAL PLAN OR THE COMERICA
INCORPORATED 1999 DISCRETIONARY DIRECTOR FEE DEFERRAL PLAN (COLLECTIVELY CALLED
"PLANS") SHOULD CHECK APPLICABLE BOXES, COMPLETE THE OTHER PORTIONS OF THE FORM,
SIGN AND DATE THE FORM AND RETURN IT TO:

                                ALBERT P. TAYLOR
                              COMERICA INCORPORATED
                                500 WOODWARD AVE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382

A.       BOARD ON WHICH I SERVE AS DIRECTOR:

         ___   COMERICA BANK
         ___   COMERICA BANK- CALIFORNIA
         ___   COMERICA BANK - TEXAS
         ___   COMERICA ADVISORY BOARD

B.       ELECTION TO DEFER FEES. PURSUANT TO PROVISIONS OF THE ABOVE REFERENCED
         PLANS, I HEREBY ELECT TO HAVE THE FEES SPECIFIED BELOW WHICH BECOME
         PAYABLE TO ME FOR RENDERING SERVICES AS A MEMBER OF THE BOARD OF
         DIRECTORS ON WHICH I SERVE DEFERRED IN THE MANNER SPECIFIED BELOW. I
         UNDERSTAND AND AGREE THAT THIS ELECTION SHALL BECOME EFFECTIVE ON THE
         DATE OF THE ANNUAL MEETING OF SHAREHOLDERS, IMMEDIATELY FOLLOWING
         RECEIPT OF THIS ELECTION BY THE OFFICE OF THE CHAIRMAN OF COMERICA
         INCORPORATED OR ON THE FIRST DAY OF THE MONTH FOLLOWING RECEIPT BY SUCH
         IF I AM NEWLY ELECTED DIRECTOR OF COMERICA. I UNDERSTAND THAT THIS
         ELECTION SHALL BE IRREVOCABLE WITH RESPECT TO FEES ONCE I HAVE
         PERFORMED THE SERVICES WHICH ENTITLE ME TO RECEIVE SUCH FEES. THIS
         ELECTION SHALL CONTINUE IN EFFECT UNTIL I MODIFY OR REVOKE IT.

                                      A2-1

<PAGE>   13



C.       PERCENTAGE OF FEES TO BE DEFERRED

         DISCRETIONARY
         (SELECT UP TO 100%)
                           _______ COMERICA COMMON STOCK FUND

                           _______ MUNDER INDEX 500 FUND

                           _______ MUNDER BOND FUND

                           _______ MUNDER SHORT TERM BOND FUND

                           _______ MUNDER SMALL COMPANY GROWTH FUND

                           _______ MUNDER CASH INVESTMENT FUND


D.       YEAR DISTRIBUTION OF DEFERRED FEES IS TO COMMENCE:      20__
         PAYMENTS WILL BE MADE OR COMMENCE ON MAY 30TH OF THE YEAR SELECTED.

E.       PAYMENT METHOD DESIRED:

         ___      LUMP SUM

         ___      INSTALLMENTS OVER _____ YEARS (YOU MAY CHOOSE 2, 5 OR 10
                  YEARS). (THE BALANCE OF ANY FEE DEFERRAL ACCOUNT WILL BE
                  DISTRIBUTED IN ONE LUMP SUM TO THE DIRECTORS DESIGNATED
                  BENEFICIARY IF THE DIRECTOR DIES BEFORE RECEIPT OF ALL
                  INSTALLMENT PAYMENTS).

         FREQUENCY OF INSTALLMENTS:

         ___   ANNUALLY

         ___   EVERY 3 MONTHS

DATE:    MAY 21, 1999                                   _______________________

                                                        SIGNATURE OF DIRECTOR

NAME           _________________________________

ADDRESS        _________________________________

               _________________________________

SOCIAL SECURITY # _____________________________

                                      A2-2

<PAGE>   14



                                                                     EXHIBIT "B"

                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLAN

                   NOTICE OF CANCELLATION OF DEFERRAL ELECTION



         A DIRECTOR WHO WISHES TO CANCEL A DEFERRAL ELECTION SHOULD SIGN AND
DATE THIS FORM AND RETURN IT TO:


                                  ALBERT TAYLOR
                              COMERICA INCORPORATED
                                500 WOODWARD AVE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382


         PURSUANT TO PROVISIONS OF THE ABOVE REFERENCED PLAN, I HEREBY CANCEL MY
DEFERRAL ELECTION UNDER THE PLAN EFFECTIVE AS OF THE FIRST DAY OF THE MONTH
FOLLOWING YOUR RECEIPT OF THIS NOTICE OF CANCELLATION OF DEFERRAL ELECTION. THIS
CANCELLATION SHALL APPLY ONLY TO UNEARNED FEES THAT WOULD, BUT FOR THIS
CANCELLATION, BE DEFERRED UNDER MY PRIOR DEFERRAL ELECTION. ANY FEES I HAVE
PREVIOUSLY ELECTED TO DEFER THAT HAVE ALREADY BEEN EARNED THROUGH MY RENDERING
OF SERVICES SHALL REMAIN SUBJECT TO MY PRIOR DEFERRAL ELECTION.




DATE: __________________                           ___________________________
                                                     SIGNATURE OF DIRECTOR

NAME:          ___________________________________

ADDRESS:       ___________________________________

               ___________________________________


SOCIAL SECURITY # _____________________________


                                       B-1

<PAGE>   15



                                                                     EXHIBIT "C"

                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLAN

                  NOTICE OF REALLOCATION OF INVESTMENT OPTIONS


         A DIRECTOR WHO WISHES TO REALLOCATE INVESTMENT OPTIONS OF DEFERRED
DIRECTOR FEES SHOULD SIGN AND DATE THIS FORM AND RETURN IT TO:


                                  ALBERT TAYLOR
                              COMERICA INCORPORATED
                                500 WOODWARD AVE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382


         PURSUANT TO PROVISIONS OF THE COMERICA INCORPORATED 1999 DISCRETIONARY
DIRECTOR DEFERRAL FEE PLAN, I HEREBY CANCEL MY PREVIOUS INVESTMENT OPTION
ALLOCATION UNDER THE PLAN EFFECTIVE AS OF THE FIRST DAY OF THE MONTH FOLLOWING
YOUR RECEIPT OF THIS NOTICE OF REALLOCATION OF INVESTMENT OPTION. ANY FEES I
HAVE PREVIOUSLY ELECTED TO DEFER WILL BE REALLOCATED IN SUCH PORTIONS AND TO
SUCH FUND(S) AS DESIGNATED BELOW:

         PERCENTAGE OF FEES TO BE DEFERRED

         DISCRETIONARY
         (SELECT UP TO 100%)

                           _______ COMERICA COMMON STOCK FUND

                           _______ MUNDER INDEX 500 FUND

                           _______ MUNDER BOND FUND

                           _______ MUNDER SHORT TERM BOND FUND

                           _______ MUNDER SMALL COMPANY GROWTH FUND

                           _______ MUNDER CASH INVESTMENT FUND


_______________________________                           ________________
     SIGNATURE OF DIRECTOR                                      DATE


                                       C-1

<PAGE>   16



                                                                     EXHIBIT "D"


                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLAN

                          BENEFICIARY DESIGNATION FORM

         A DIRECTOR WHO IS SUBMITTING AN ELECTION TO DEFER FEES SHOULD COMPLETE
THIS FORM, SIGN AND DATE IT AND RETURN IT TO:

                                  ALBERT TAYLOR
                              COMERICA INCORPORATED
                               500 WOODWARD AVENUE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382

         PURSUANT TO THE PROVISIONS OF THE COMERICA INCORPORATED 1999 COMMON
STOCK DIRECTOR FEE DEFERRAL PLAN OR THE COMERICA INCORPORATED 1999 DISCRETIONARY
DIRECTOR FEE DEFERRAL PLAN (THE "PLAN), I HEREBY DESIGNATE THE PERSON(S) NAMED
BELOW AS BENEFICIARY OF ALL SUMS HELD UNDER THE PLAN WHICH ARE OWING TO ME AT
THE TIME OF MY DEATH.


A.       PRIMARY BENEFICIARY (CHECK ONE BOX AND PROVIDE RELATED INFORMATION):

         1.    ___ MY SPOUSE.

               NAME OF SPOUSE ___________________   SOCIAL SECURITY#____________

               ADDRESS _________________________________________________

                       _________________________________________________


         2.    ___ THE SUCCESSOR TRUSTEE(S) OF MY REVOCABLE LIVING TRUST.

               CAPTION APPEARING ON TRUST AGREEMENT ____________________________

               DATE OF ORIGINAL OR AMENDED AND RESTATED TRUST AGREEMENT ________

               EMPLOYER IDENTIFICATION NUMBER                 __________________

         3.    ___ THE EXECUTOR, ADMINISTRATOR OR PERSONAL REPRESENTATIVE OF MY
               ESTATE.

         4.    ___ OTHER (EACH BENEFICIARY MUST BE OVER 18 YEARS OF AGE).


                                       D-1

<PAGE>   17



         A.    NAME OF BENEFICIARY ________________    SOCIAL SECURITY #_______

               RELATIONSHIP TO DIRECTOR ________________________________

               ADDRESS        __________________________________________

                              __________________________________________

               PORTION OF ACCOUNT TO BE DISTRIBUTED TO THIS BENEFICIARY _______%


         B.    NAME OF BENEFICIARY _____________  SOCIAL SECURITY #____________

               RELATIONSHIP TO DIRECTOR ________________________________

               ADDRESS        __________________________________________

                              __________________________________________

               PORTION OF ACCOUNT TO BE DISTRIBUTED TO THIS BENEFICIARY _______%

               (IF YOU WISH TO NAME MORE THAN TWO BENEFICIARIES, PLEASE SUBMIT
               DUPLICATE COPIES OF THIS FORM AND INSERT APPROPRIATE PERCENTAGES.
               PLEASE SIGN AND DATE EACH COPY OF THIS FORM WHICH IS SUBMITTED.)


B.       ALTERNATE BENEFICIARY

         IF ALL PERSONS NAMED ABOVE AS MY PRIMARY BENEFICIARY PREDECEASE ME OR
SUCH PERSON(S) AND I DIE IN A COMMON DISASTER UNDER SUCH CIRCUMSTANCES THAT IT
IS IMPOSSIBLE TO DETERMINE WHO SURVIVED THE OTHER, THEN I DESIGNATE THE
FOLLOWING PERSON AS ALTERNATE BENEFICIARY TO RECEIVE THE SUMS THAT WOULD
OTHERWISE HAVE BEEN PAYABLE TO THE PRIMARY BENEFICIARY IF THE PRIMARY
BENEFICIARY HAD SURVIVED.

               NAME OF ALTERNATE BENEFICIARY ___________________________

               SOCIAL SECURITY OR EIN # ________________________________

               ADDRESS              ______________________________

                                    ______________________________



                                       D-2

<PAGE>   18



         THIS DESIGNATION SUPERSEDES ANY PREVIOUS BENEFICIARY DESIGNATION I MAY
HAVE MADE WITH RESPECT TO DEFERRED FEES UNDER THE PLAN, INCLUDING PRIOR VERSIONS
OF THE PLAN. I RESERVE THE RIGHT TO CHANGE THE BENEFICIARY(IES) NAMED HEREIN IN
ACCORDANCE WITH THE TERMS OF THE PLAN. IF THERE ARE NO ALTERNATE BENEFICIARIES
LIVING OR IN EXISTENCE AT THE DATE OF MY DEATH, I UNDERSTAND THAT THE BALANCE OF
MY ACCOUNT WILL BE PAID TO THE LEGAL REPRESENTATIVE OF MY ESTATE.



_______________________________                      ________________
    SIGNATURE OF DIRECTOR                                  DATE


_______________________________                      ________________
    SIGNATURE OF WITNESS                                   DATE




                                      D-3


<PAGE>   1
                                                                   EXHIBIT 10.22

















                              COMERICA INCORPORATED
                  1999 COMMON STOCK DIRECTOR FEE DEFERRAL PLAN






















<PAGE>   2



                           COMERICA INCORPORATED 1999
                     COMMON STOCK DIRECTOR FEE DEFERRAL PLAN


                                TABLE OF CONTENTS




SECTION I - PURPOSE............................................................1

SECTION II - DEFINITIONS.......................................................1

SECTION III - ELIGIBILITY......................................................2

SECTION IV - PROCEDURES RELATING TO DEFERRALS..................................2

SECTION V - CREDITING OF EARNINGS TO ACCOUNTS..................................4

SECTION VI - DISTRIBUTION OF DEFERRED FEES.....................................4

SECTION VII - DESIGNATION OF BENEFICIARY.......................................5

SECTION VIII - MISCELLANEOUS PROVISIONS........................................6


EXHIBIT A1 - NOTICE OF ELECTION TO DEFER....................................A1-1

EXHIBIT A2 - NOTICE OF ELECTION TO DEFER....................................A2-1

EXHIBIT B - NOTICE OF CANCELLATION OF DEFERRAL ELECTION......................B-1

EXHIBIT C - BENEFICIARY DESIGNATION FORM.....................................C-1


                                       -i-

<PAGE>   3



                        COMERICA INCORPORATED 1999 COMMON
                        STOCK DIRECTOR FEE DEFERRAL PLAN


SECTION I - PURPOSE

The purpose of this Common Stock Plan is to allow eligible directors to defer
their compensation, under the conditions provided herein, into the Company Stock
Unit Account. All funds in the Company Stock Unit Account are hypothetically
invested in the common stock of the Company. At least one-half of the Director
Fees of each eligible director of the Company must be deferred into the Company
Stock Unit Account. The remaining Director Fees of an eligible director of the
Company may be deferred in any portion as requested by each director. Eligible
directors of any Subsidiary of the Company or Advisory Board may defer any
portion of their compensation under this Common Stock Plan.


SECTION II - DEFINITIONS

The following words and phrases, wherever capitalized, shall have the following
meanings respectively:

         A. "Advisory Board" means a special board of directors appointed to
advise a Subsidiary of the Company.

         B. "Beneficiary(ies)" means such individual(s) or entity(ies)
designated on the most recent Beneficiary Designation the director has submitted
to the Corporate Secretary.

         C. "Beneficiary Designation" means a beneficiary designation on the
form attached hereto as Exhibit "C", as such form may be modified by the Plan
Administrator from time to time.

         D. [Intentionally Left Blank]

         E. "Code" means the Internal Revenue Code of 1986, as amended.

         F. "Committee" means the Directors' Committee of the Board of Directors
of Comerica Incorporated.

         G. "Company " means Comerica Incorporated, a Delaware corporation.

         H. "Common Stock Plan" means the "Comerica Incorporated 1999 Common
Stock Director Fee Deferral Plan," the provisions of which are set forth herein,
as it may be amended from time to time.


                                       -1-

<PAGE>   4

         I. "Company Stock Unit Account" means an account established under
Section V of this Common Stock Plan in the name of each director to record those
fees that are deferred under this Common Stock Plan on the director's behalf and
earnings thereon.

         J. "Corporate Secretary" means the Secretary of Comerica Incorporated.

         K. "Deferral Election" means a written notice to defer the payment of
director fees on one of the applicable forms attached hereto as Exhibits "A-1 or
A-2", as such form may be modified by the Plan Administrator from time to time.

         L. "Director Fees" means a director's annual retainer, fees for
attending board meetings, fees for attending meetings of any committee of the
board, if any, and fees for serving as chairman of any committee of the board.
At least one-half (or other fractional portion as determined by the Committee)
of the Director Fees of each eligible director of the Company (not the directors
of any Subsidiary of the Company or Advisory Board of a Subsidiary of the
Company) shall be automatically deferred and allocated, on the director's
behalf, into the Company Stock Unit Account designated for each director.

         M. "Participant" means an eligible director for whom a Company Stock
Unit Account is maintained under the Common Stock Plan.

         N. "Plan Administrator" means one or more individuals appointed by the
Committee to handle the day-to-day administration of the Common Stock Plan.

         O. "Subsidiary" means any corporation, partnership or other entity, a
majority of whose stock or interests is owned by Comerica Incorporated.

         P. "Unforeseeable Emergency" means a severe financial hardship to the
Participant resulting from a sudden and unexpected illness or accident of the
Participant or of a dependent (within the meaning of Code Section 152(a)) of the
Participant, loss of the Participant's property due to casualty, or other
similar extraordinary and unforeseeable circumstances arising as a result of
events beyond the control of the Participant.

SECTION III - ELIGIBILITY

Each director of the Company and, each director of any Subsidiary of the
Company, and each director of any Advisory Board of a Subsidiary of the Company
shall be eligible to participate in the Common Stock Plan provided any such
director is not an employee of the Company or an employee of any Subsidiary of
the Company.

SECTION IV - PROCEDURES RELATING TO DEFERRALS

         A. Deferral of Director Compensation.

         1. Mandatory Deferrals for Directors of the Company. At least one-half
of the Director Fees of each of the Company's directors shall be automatically
deferred to and recorded in each individual director's Company Stock Unit
Account and shall not otherwise be subject to

                                       -2-

<PAGE>   5



any other Deferral Election (other than length of deferral and schedule of
pay-out). The remainder of the Director Fees of a Company director may be
deferred under this Common Stock Plan or as provided in Comerica Incorporated's
1999 Discretionary Director Fee Deferral Plan. The minimum period of deferral
for Director Fees deferred pursuant to this Section IV (A) shall be the lesser
of the number of years remaining before regular retirement or five years. In the
event a Company director does not indicate the period of deferral, such fees
shall be deferred for a period of five years and paid out in a single lump sum.

               2. Deferral for Directors of any Subsidiary. Directors of any
Subsidiary of the Company may defer any portion of their compensation under this
Common Stock Plan or Comerica Incorporated's 1999 Discretionary Director Fee
Deferral Plan. The minimum period of deferral for Director Fees deferred
pursuant to this Section IV (A) shall be the lesser of the number of years
remaining before regular retirement or five years. In the event a director of
any Subsidiary of the Company does not indicate the period of deferral, such
fees shall be deferred for a period of five years and paid out in a single lump
sum.

               3. Deferral for Directors of any Advisory Board. Directors of an
Advisory Board of any Subsidiary of the Company may defer any portion of their
compensation under this Common Stock Plan or Comerica Incorporated's 1999
Discretionary Director Fee Deferral Plan. The minimum period of deferral for
Director Fees deferred pursuant to this Section IV (A) shall be the lesser of
the number of years remaining before regular retirement or five years. In the
event a director of an Advisory Board of any Subsidiary of the Company does not
indicate the period of deferral, such fees shall be deferred for a period of
five years and paid out in a single lump sum.

B. Deferral Procedures. Any director wishing to defer Director Fees which are
subject to a Deferral Election must submit a Deferral Election to the Corporate
Secretary at 500 Woodward, MC 3391, Detroit, Michigan 48226-3391 or such other
person designated by the Chief Executive Officer of the Company from time to
time, prior to the beginning of the service year during which the fees are to be
earned (from annual meeting of shareholders to annual meeting of shareholders).
However, any newly-appointed or newly-elected director may submit a Deferral
Election within sixty days of his or her appointment or election. A Deferral
Election must cover all of an individual's Director Fees which are subject to an
automatic allocation into the Common Stock Unit Account, as determined by the
Committee.

               1. Irrevocability. A director may not modify or revoke a Deferral
               Election (except to the extent permitted to reallocate among
               investment options), once the director has performed the services
               that entitle the director to the fees. If a director has
               submitted a Deferral Election relating to fees to be earned in
               the future, he or she may modify such election by submitting a
               new Deferral Election prior to the beginning of the calendar year
               in which the fees will be earned. Any such Deferral Election will
               supersede any previous Deferral Election as it relates to fees to
               be earned in future years.

               2. Cancellation. A Deferral Election may be canceled by
               submitting a Cancellation of Deferral Election in form and
               substance as provided in Exhibit B attached hereto, as such form
               may be modified by the Plan Administrator from time to time.

                                       -3-

<PAGE>   6



               A director who cancels a Deferral Election may not submit a new
               Deferral Election before at least twelve months have elapsed from
               the effective date of the cancellation.


SECTION V - CREDITING OF EARNINGS TO ACCOUNTS

Director Fees which have been deferred under the Common Stock Plan shall be
credited to Common Stock Unit Accounts which are recorded on the books of the
Company. As of the last day of each month or on a more frequent basis if
practicable, the Company Stock Unit Account shall be adjusted as follows:

         Company Stock Unit Accounts shall be "hypothetically invested" in the
         common stock of the Company. In the event the Company has established a
         rabbi trust for its own benefit to fund the Company's obligations under
         this Common Stock Plan, the purchase price for the Company stock units
         shall be the actual price of the shares the Company purchases on the
         open market on the day of the deferral of the Director Fees. In the
         event that the Company has not established a rabbi trust, the purchase
         price shall be based upon the closing price for the stock on the New
         York Stock Exchange on the day that the Director Fees would have
         otherwise been paid to the director had they not been deferred. No
         director shall have any right to vote any shares of the Company's stock
         held in the rabbi trust except to the extent otherwise permitted by the
         terms of the rabbi trust.

         1.    The account shall first be charged with any distributions made
               during the month or on a more frequent basis if practicable;

         2.    The account shall then be credited with earnings, gains and
               losses for the month or on a more frequent basis if practicable
               based upon the closing price for Company common stock on the New
               York Stock Exchange as of the last day of such month, plus any
               dividends paid during such period.

         3.    The account shall then be credited with the amount, if any, of
               Director Fees deferred and designated to be credited to such
               account during such month.

SECTION VI - DISTRIBUTION OF DEFERRED FEES

         A. Time and Manner. Distribution of the Participant's accounts shall be
made in cash at such time and in such manner, i.e., a lump sum or installments,
as the Participant has specified in the Deferral Election(s) submitted to the
Corporate Secretary or as otherwise required by Section IV(A).

         B. Installment Payments. Installment payments under an installment
payment option may not exceed ten years. The amount of each installment payment
shall be determined by multiplying the balance of the Company Stock Unit Account
on the date the installment is scheduled to be paid by a fraction, the numerator
of which is one and the denominator of which is the number of unpaid
installments remaining at such time. If a Participant who is

                                       -4-

<PAGE>   7



receiving installment payments dies prior to receiving the balance of his or her
account, the unpaid balance shall be paid in one lump sum to the Participant's
Beneficiary(ies) not later than the 15th day of the month following the month in
which the Participant's death occurred.

         C. Hardship Distributions. In the event of an Unforeseeable Emergency
involving a Participant which occurs prior to distribution of the entire balance
of the Participant's Company Stock Unit Account, the Committee may, in its sole
discretion, distribute to the Participant in a single sum an amount equal to
such portion of such account as shall be necessary, in the judgment of the
Committee, to alleviate the financial hardship occasioned by the Unforeseeable
Emergency. Any Participant desiring a distribution under the Common Stock Plan
on account of an Unforeseeable Emergency shall submit to the Committee a written
request for such distribution which sets forth in reasonable detail the
Unforeseeable Emergency which would cause the Participant severe financial
hardship, and the amount which the Participant believes to be necessary to
alleviate the financial hardship. In determining whether to grant any requested
hardship distribution, the Committee shall adhere to the requirements of Section
1.457-2(h)(4) of the Income Tax Regulations (or to any successor regulations
dealing with the same subject matter), the provisions of which are incorporated
herein by reference.

         D. Cash Out Distributions. If, at the time an installment distribution
of a Company Stock Unit Account in the name of any Participant is scheduled to
commence, the fair market value of such account does not exceed $10,000, then,
notwithstanding an election by the Participant that such account be distributed
in installments, the balance of such account shall be distributed to the
Participant in a single sum on or about the date the first installment is
scheduled to be made.

SECTION VII - DESIGNATION OF BENEFICIARY

Upon becoming a Participant of the Common Stock Plan, each director shall submit
to the Corporate Secretary or such other person designated by the Chief
Executive Officer of the Company from time to time a Beneficiary Designation in
form and substance as provided in Exhibit C attached hereto, as such form may be
modified by the Plan Administrator from time to time, designating one or more
Beneficiaries to whom payments otherwise due the Participant shall be made in
the event of the Participant's death before distribution of the Participant's
Company Stock Unit Account has been completed. A Beneficiary Designation will be
effective only if it is signed by the Participant and submitted to the Corporate
Secretary before the Participant's death. Any Beneficiary Designation submitted
to the Corporate Secretary will supersede any previous Beneficiary Designation
so submitted. If the primary beneficiary shall predecease the Participant or the
primary beneficiary and the Participant die in a common disaster under such
circumstances that it is impossible to determine who survived the other, amounts
remaining unpaid at the time of the Participant's death shall be paid to the
alternate beneficiary(ies) who survive the Participant. If there are no
alternate beneficiaries living or in existence at the date of the Participant's
death, the balance of the account shall be paid in one lump sum to the legal
representative of the Participant's estate.




                                       -5-

<PAGE>   8



SECTION VIII - MISCELLANEOUS PROVISIONS

         A. Nonalienation of Benefits. Neither the Participant nor any
Beneficiary designated by him or her shall have any right to alienate, assign,
or encumber any amount that is or may be payable hereunder, nor may any such
amount be subject to attachment, garnishment, levy, execution or other legal or
equitable process for the debts, contracts, liabilities, engagements or acts of
any Participant or Beneficiary.

         B. Administration of Common Stock Plan. Full power and authority to
construe, interpret, and administer the Plan shall be vested in the Directors'
Committee of the Board of Directors of the Company. To the extent permitted by
law, the Committee may delegate any authority it possesses to the Common Stock
Plan Administrator. To the extent the Committee has delegated authority
concerning a matter to the Plan Administrator, any reference in the Common Stock
Plan to the "Committee" insofar as it pertains to such matter, shall refer
likewise to the Plan Administrator. Decisions of the Committee shall be final,
conclusive, and binding upon all parties.

         C. Amendment or Termination. The Board of Directors of the Company may
amend or terminate this Common Stock Plan at any time. Any amendment or
termination of this Common Stock Plan shall not affect the rights of
Participants or Beneficiaries to the amounts in the Company Stock Unit Account
at the time of such amendment or termination. The Common Stock Plan
Administrator may make any amendments to the Common Stock Plan, including forms
under the Common Stock Plan, recommended by the Company's legal counsel which
are necessary or appropriate to keep the Common Stock Plan and forms in
compliance with applicable laws. The Company reserves the right to accelerate
distribution of fees deferred hereunder in the event the Common Stock Plan is
terminated.

         D. Effective Date. This Common Stock Plan is intended to constitute an
amendment and restatement of a prior Plan maintained by the Company captioned
"Comerica Incorporated Director Fee Deferral Plan". The Common Stock Plan was
approved by the Board of Directors of Company on May 21, 1999. The version of
the Common Stock Plan contained in this document shall be effective to defer
monies to be earned from and after January 1, 1997, and the earnings rate
contained in this version of the Common Stock Plan shall apply to existing
accounts under the Common Stock Plan beginning January 1, 1997. Except for the
earnings rate, monies deferred under prior versions of the Common Stock Plan
shall remain subject to prior deferral notices.

         E. Statements to Participants. Statements will be provided to
Participants under the Common Stock Plan on at least an annual basis.

         F. Nonforfeitability of Participant Accounts. Each Participant shall be
fully vested in his or her Company Stock Unit Account.

         G. Successors Bound. The contractual agreement between Comerica
Incorporated and each Participant resulting from the execution of a Deferral
Election shall be binding upon and inure to the benefit of Comerica
Incorporated, its successors and assigns, and to the

                                       -6-

<PAGE>   9



Participant and to the Participant's heirs, executors, administrators and other
legal representatives.

         H. Governing Law and Rules of Construction. This Common Stock Plan
shall be governed in all respects, whether as to construction, validity or
otherwise, by applicable federal law and, to the extent that federal law is
inapplicable, by the laws of the State of Michigan. Each provision of this
Common Stock Plan shall be treated as severable, to the end that, if any one or
more provisions shall be adjudged or declared illegal, invalid or unenforceable,
this Common Stock Plan shall be interpreted, and shall remain in full force and
effect, as though such provision or provisions had never been contained herein.
It is the intention of Comerica Incorporated that the Common Stock Plan
established hereunder be "unfunded" for income tax purposes, whether or not the
Company establishes a rabbi trust, and the provisions hereof shall be construed
in a manner to carry out that intention.

         I. Ownership of Fee Deferrals. Title to and beneficial ownership of any
assets, of whatever nature, which may be allocated by Company to any Company
Stock Unit Account in the name of any Participant shall at all times remain with
Company, and no Participant or Beneficiary shall have any property interest
whatsoever in any specific assets of Company by reason of the establishment of
the Common Stock Plan. The rights of each Participant and Beneficiary hereunder
shall be limited to enforcing the unfunded, unsecured promise of Company to pay
benefits under the Common Stock Plan, and the status of any Participant or
Beneficiary shall be that of an unsecured general creditor of Company.






                                      -7-

<PAGE>   10


                                                                    EXHIBIT "A1"


                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLANS

               FORM APPLICABLE TO COMERICA INCORPORATED DIRECTORS

                         NOTICE OF ELECTION TO DEFER AND
                    DISTRIBUTION OF DEFERRED DIRECTORS' FEES

A DIRECTOR WHO WISHES TO DEFER FEES PURSUANT TO THE COMERICA INCORPORATED 1999
COMMON STOCK DIRECTOR FEE DEFERRAL PLAN OR COMERICA INCORPORATED 1999
DISCRETIONARY DIRECTOR FEE DEFERRAL PLAN (COLLECTIVELY CALLED "PLANS") SHOULD
CHECK APPLICABLE BOXES, SIGN AND DATE THE FORM AND RETURN IT TO:

                                ALBERT P. TAYLOR
                              COMERICA INCORPORATED
                                500 WOODWARD AVE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382

A. I SERVE AS DIRECTOR ON THE COMERICA INCORPORATED BOARD

B. ELECTION TO DEFER FEES. PURSUANT TO PROVISIONS OF THE ABOVE REFERENCED PLANS,
I HEREBY ELECT TO HAVE THE FEES WHICH ARE PAYABLE TO ME FOR RENDERING SERVICES
AS A MEMBER OF THE BOARD OF DIRECTORS OF COMERICA INCORPORATED DEFERRED IN THE
MANNER SPECIFIED BELOW. I UNDERSTAND THAT AT LEAST ONE-HALF OF MY DIRECTOR FEES
SHALL BE DEFERRED INTO THE COMERICA COMMON STOCK FUND. I UNDERSTAND AND AGREE
THAT THIS ELECTION SHALL BECOME EFFECTIVE ON THE DATE OF THE ANNUAL MEETING OF
SHAREHOLDERS IMMEDIATELY FOLLOWING RECEIPT OF THIS NOTICE OF ELECTION BY THE
OFFICE OF THE CHAIRMAN OF COMERICA INCORPORATED OR ON THE FIRST DAY OF THE MONTH
FOLLOWING RECEIPT BY SUCH IF I AM A NEWLY ELECTED DIRECTOR OF COMERICA
INCORPORATED. I UNDERSTAND THAT THIS ELECTION SHALL BE IRREVOCABLE WITH RESPECT
TO FEES ONCE I HAVE PERFORMED THE SERVICES WHICH ENTITLE ME TO RECEIVE SUCH
FEES. THIS ELECTION SHALL CONTINUE IN EFFECT UNTIL I MODIFY OR REVOKE IT.

C. PERCENTAGE OF FEES TO BE DEFERRED:

MANDATORY                           50%     COMERICA COMMON STOCK FUND








                                      A1-1

<PAGE>   11



DISCRETIONARY
(SELECT UP TO 50%)
                           ____     COMERICA COMMON STOCK FUND

                           ____     MUNDER INDEX 500 FUND

                           ____     MUNDER BOND FUND

                           ____     MUNDER SHORT TERM BOND FUND

                           ____     MUNDER SMALL COMPANY GROWTH FUND

                           ____     MUNDER CASH INVESTMENT FUND

D.       YEAR DISTRIBUTION OF DEFERRED FEES IS TO COMMENCE (MUST BE A MINIMUM OF
         5 YEARS, EXCEPT IN THE CASE OF RETIREMENT, IN WHICH CASE PAYMENTS MAY
         BEGIN IN THE YEAR OF RETIREMENT): 20__

PAYMENTS WILL BE MADE OR COMMENCE ON MAY 30TH OF THE YEAR SELECTED.


E.       PAYMENT METHOD DESIRED:

         ___      LUMP SUM

         ___      INSTALLMENTS OVER _____ YEARS (YOU MAY CHOOSE 2, 5 OR 10
                  YEARS). (THE BALANCE OF ANY FEE DEFERRAL ACCOUNT WILL BE
                  DISTRIBUTED IN ONE LUMP SUM TO THE DIRECTORS DESIGNATED
                  BENEFICIARY IF THE DIRECTOR DIES BEFORE RECEIPT OF ALL
                  INSTALLMENT PAYMENTS).


         FREQUENCY OF INSTALLMENTS:

         ___      ANNUALLY

         ___      EVERY 3 MONTHS

DATE:    MAY 21, 1999                              _____________________________
                                                   SIGNATURE OF DIRECTOR


Name           _______________________________

Address        _______________________________

               _______________________________

Social Security # ____________________________

                                      A1-2

<PAGE>   12


                                                                    EXHIBIT "A2"

                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLANS

                  FORM APPLICABLE TO BANK OR ADVISORY DIRECTORS

                         NOTICE OF ELECTION TO DEFER AND
                    DISTRIBUTION OF DEFERRED DIRECTORS' FEES

A DIRECTOR WHO WISHES TO DEFER FEES PURSUANT TO THE TERMS OF THE COMERICA
INCORPORATED 1999 COMMON STOCK DIRECTOR FEE DEFERRAL PLAN OR THE COMERICA
INCORPORATED 1999 DISCRETIONARY DIRECTOR FEE DEFERRAL PLAN (COLLECTIVELY CALLED
"PLANS") SHOULD CHECK APPLICABLE BOXES, COMPLETE THE OTHER PORTIONS OF THE FORM,
SIGN AND DATE THE FORM AND RETURN IT TO:

                                ALBERT P. TAYLOR
                              COMERICA INCORPORATED
                                500 WOODWARD AVE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382

A.       BOARD ON WHICH I SERVE AS DIRECTOR:

         ___      COMERICA BANK
         ___      COMERICA BANK- CALIFORNIA
         ___      COMERICA BANK - TEXAS
         ___      COMERICA ADVISORY BOARD

B.       ELECTION TO DEFER FEES. PURSUANT TO PROVISIONS OF THE ABOVE REFERENCED
         PLANS, I HEREBY ELECT TO HAVE THE FEES SPECIFIED BELOW WHICH BECOME
         PAYABLE TO ME FOR RENDERING SERVICES AS A MEMBER OF THE BOARD OF
         DIRECTORS ON WHICH I SERVE DEFERRED IN THE MANNER SPECIFIED BELOW. I
         UNDERSTAND AND AGREE THAT THIS ELECTION SHALL BECOME EFFECTIVE ON THE
         DATE OF THE ANNUAL MEETING OF SHAREHOLDERS, IMMEDIATELY FOLLOWING
         RECEIPT OF THIS ELECTION BY THE OFFICE OF THE CHAIRMAN OF COMERICA
         INCORPORATED OR ON THE FIRST DAY OF THE MONTH FOLLOWING RECEIPT BY SUCH
         IF I AM A NEWLY ELECTED DIRECTOR OF COMERICA. I UNDERSTAND THAT THIS
         ELECTION SHALL BE IRREVOCABLE WITH RESPECT TO FEES ONCE I HAVE
         PERFORMED THE SERVICES WHICH ENTITLE ME TO RECEIVE SUCH FEES. THIS
         ELECTION SHALL CONTINUE IN EFFECT UNTIL I MODIFY OR REVOKE IT.

                                      A2-1

<PAGE>   13



C.       PERCENTAGE OF FEES TO BE DEFERRED

         DISCRETIONARY
         (SELECT UP TO 100%)
                           _______ COMERICA COMMON STOCK FUND

                           _______ MUNDER INDEX 500 FUND

                           _______ MUNDER BOND FUND

                           _______ MUNDER SHORT TERM BOND FUND

                           _______ MUNDER SMALL COMPANY GROWTH FUND

                           _______ MUNDER CASH INVESTMENT FUND


D.       YEAR DISTRIBUTION OF DEFERRED FEES IS TO COMMENCE:    20__
         PAYMENTS WILL BE MADE OR COMMENCE ON MAY 30TH OF THE YEAR SELECTED.

E.       PAYMENT METHOD DESIRED:

         ___      LUMP SUM

         ___      INSTALLMENTS OVER _____ YEARS (YOU MAY CHOOSE 2, 5 OR 10
                  YEARS). (THE BALANCE OF ANY FEE DEFERRAL ACCOUNT WILL BE
                  DISTRIBUTED IN ONE LUMP SUM TO THE DIRECTORS DESIGNATED
                  BENEFICIARY IF THE DIRECTOR DIES BEFORE RECEIPT OF ALL
                  INSTALLMENT PAYMENTS).

         FREQUENCY OF INSTALLMENTS:

         ___      ANNUALLY

         ___      EVERY 3 MONTHS

DATE:    MAY 21, 1999                                ___________________________
                                                     SIGNATURE OF DIRECTOR


NAME           _________________________________

ADDRESS        _________________________________

               _________________________________

SOCIAL SECURITY # ______________________________

                                      A2-2

<PAGE>   14


                                                                     EXHIBIT "B"

                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLAN

                   NOTICE OF CANCELLATION OF DEFERRAL ELECTION



         A DIRECTOR WHO WISHES TO CANCEL A DEFERRAL ELECTION SHOULD SIGN AND
DATE THIS FORM AND RETURN IT TO:


                                  ALBERT TAYLOR
                              COMERICA INCORPORATED
                                500 WOODWARD AVE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382


         PURSUANT TO PROVISIONS OF THE ABOVE REFERENCED PLAN, I HEREBY CANCEL MY
DEFERRAL ELECTION UNDER THE PLAN EFFECTIVE AS OF THE FIRST DAY OF THE MONTH
FOLLOWING YOUR RECEIPT OF THIS NOTICE OF CANCELLATION OF DEFERRAL ELECTION. THIS
CANCELLATION SHALL APPLY ONLY TO UNEARNED FEES THAT WOULD, BUT FOR THIS
CANCELLATION, BE DEFERRED UNDER MY PRIOR DEFERRAL ELECTION. ANY FEES I HAVE
PREVIOUSLY ELECTED TO DEFER THAT HAVE ALREADY BEEN EARNED THROUGH MY RENDERING
OF SERVICES SHALL REMAIN SUBJECT TO MY PRIOR DEFERRAL ELECTION.




DATE: __________________                             ___________________________
                                                     SIGNATURE OF DIRECTOR

NAME:          ___________________________________

ADDRESS:       ___________________________________

               ___________________________________


SOCIAL SECURITY # ________________________________


                                       B-1

<PAGE>   15


                                                                     EXHIBIT "C"

                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLAN

                  NOTICE OF REALLOCATION OF INVESTMENT OPTIONS


         A DIRECTOR WHO WISHES TO REALLOCATE INVESTMENT OPTIONS OF DEFERRED
DIRECTOR FEES SHOULD SIGN AND DATE THIS FORM AND RETURN IT TO:


                                  ALBERT TAYLOR
                              COMERICA INCORPORATED
                                500 WOODWARD AVE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382


         PURSUANT TO PROVISIONS OF THE COMERICA INCORPORATED 1999 DISCRETIONARY
DIRECTOR DEFERRAL FEE PLAN, I HEREBY CANCEL MY PREVIOUS INVESTMENT OPTION
ALLOCATION UNDER THE PLAN EFFECTIVE AS OF THE FIRST DAY OF THE MONTH FOLLOWING
YOUR RECEIPT OF THIS NOTICE OF REALLOCATION OF INVESTMENT OPTION. ANY FEES I
HAVE PREVIOUSLY ELECTED TO DEFER WILL BE REALLOCATED IN SUCH PORTIONS AND TO
SUCH FUND(S) AS DESIGNATED BELOW:

         PERCENTAGE OF FEES TO BE DEFERRED

         DISCRETIONARY
         (SELECT UP TO 100%)

                           _______ COMERICA COMMON STOCK FUND

                           _______ MUNDER INDEX 500 FUND

                           _______ MUNDER BOND FUND

                           _______ MUNDER SHORT TERM BOND FUND

                           _______ MUNDER SMALL COMPANY GROWTH FUND

                           _______ MUNDER CASH INVESTMENT FUND


_______________________________                                _________________
    SIGNATURE OF DIRECTOR                                             DATE

                                       C-1

<PAGE>   16


                                                                     EXHIBIT "D"


                              COMERICA INCORPORATED
                           DIRECTOR FEE DEFERRAL PLAN

                          BENEFICIARY DESIGNATION FORM

         A DIRECTOR WHO IS SUBMITTING AN ELECTION TO DEFER FEES SHOULD COMPLETE
THIS FORM, SIGN AND DATE IT AND RETURN IT TO:

                                  ALBERT TAYLOR
                              COMERICA INCORPORATED
                               500 WOODWARD AVENUE
                               31ST FLOOR, MC 3382
                          DETROIT, MICHIGAN 48226-3382

         PURSUANT TO THE PROVISIONS OF THE COMERICA INCORPORATED 1999 COMMON
STOCK DIRECTOR FEE DEFERRAL PLAN OR THE COMERICA INCORPORATED 1999 DISCRETIONARY
DIRECTOR FEE DEFERRAL PLAN (THE "PLAN), I HEREBY DESIGNATE THE PERSON(S) NAMED
BELOW AS BENEFICIARY OF ALL SUMS HELD UNDER THE PLAN WHICH ARE OWING TO ME AT
THE TIME OF MY DEATH.


A.       PRIMARY BENEFICIARY (CHECK ONE BOX AND PROVIDE RELATED INFORMATION):

         1. ___     MY SPOUSE.

               NAME OF SPOUSE ___________________  SOCIAL SECURITY#_____________

               ADDRESS _________________________________________________________

                       _________________________________________________________


         2. ___ THE SUCCESSOR TRUSTEE(S) OF MY REVOCABLE LIVING TRUST.

            CAPTION APPEARING ON TRUST AGREEMENT _______________________________

            DATE OF ORIGINAL OR AMENDED AND RESTATED TRUST AGREEMENT ___________

            EMPLOYER IDENTIFICATION NUMBER _____________________________________

         3. ___ THE EXECUTOR, ADMINISTRATOR OR PERSONAL REPRESENTATIVE OF MY
            ESTATE.

         4. ___ OTHER (EACH BENEFICIARY MUST BE OVER 18 YEARS OF AGE).


                                       D-1

<PAGE>   17



         A.    NAME OF BENEFICIARY _________________ SOCIAL SECURITY #__________

               RELATIONSHIP TO DIRECTOR ________________________________________

               ADDRESS  ________________________________________________________

                        ________________________________________________________

               PORTION OF ACCOUNT TO BE DISTRIBUTED TO THIS BENEFICIARY _______%


         B.    NAME OF BENEFICIARY _____________  SOCIAL SECURITY #_____________

               RELATIONSHIP TO DIRECTOR ________________________________________

               ADDRESS  ________________________________________________________

                        ________________________________________________________


               PORTION OF ACCOUNT TO BE DISTRIBUTED TO THIS BENEFICIARY _______%

               (IF YOU WISH TO NAME MORE THAN TWO BENEFICIARIES, PLEASE SUBMIT
               DUPLICATE COPIES OF THIS FORM AND INSERT APPROPRIATE PERCENTAGES.
               PLEASE SIGN AND DATE EACH COPY OF THIS FORM WHICH IS SUBMITTED.)


B.       ALTERNATE BENEFICIARY

         IF ALL PERSONS NAMED ABOVE AS MY PRIMARY BENEFICIARY PREDECEASE ME OR
SUCH PERSON(S) AND I DIE IN A COMMON DISASTER UNDER SUCH CIRCUMSTANCES THAT IT
IS IMPOSSIBLE TO DETERMINE WHO SURVIVED THE OTHER, THEN I DESIGNATE THE
FOLLOWING PERSON AS ALTERNATE BENEFICIARY TO RECEIVE THE SUMS THAT WOULD
OTHERWISE HAVE BEEN PAYABLE TO THE PRIMARY BENEFICIARY IF THE PRIMARY
BENEFICIARY HAD SURVIVED.

               NAME OF ALTERNATE BENEFICIARY ___________________________________

               SOCIAL SECURITY OR EIN # ________________________________________

               ADDRESS  ________________________________________________________

                        ________________________________________________________



                                       D-2

<PAGE>   18


         THIS DESIGNATION SUPERSEDES ANY PREVIOUS BENEFICIARY DESIGNATION I MAY
HAVE MADE WITH RESPECT TO DEFERRED FEES UNDER THE PLAN, INCLUDING PRIOR VERSIONS
OF THE PLAN. I RESERVE THE RIGHT TO CHANGE THE BENEFICIARY(IES) NAMED HEREIN IN
ACCORDANCE WITH THE TERMS OF THE PLAN. IF THERE ARE NO ALTERNATE BENEFICIARIES
LIVING OR IN EXISTENCE AT THE DATE OF MY DEATH, I UNDERSTAND THAT THE BALANCE OF
MY ACCOUNT WILL BE PAID TO THE LEGAL REPRESENTATIVE OF MY ESTATE.




_______________________________                              ___________________
   SIGNATURE OF DIRECTOR                                             DATE


_______________________________                              ___________________
   SIGNATURE OF WITNESS                                              DATE







                                      D-3



<PAGE>   1
                                                                      EXHIBIT 13



FINANCIAL REVIEW AND REPORTS

1999 Financial Highlights......................  22
Earnings Performance...........................  22
Strategic Lines of Business....................  29
Balance Sheet and Capital Funds Analysis.......  31
Risk Management................................  32
Consolidated Financial Statements..............  40
Notes to Consolidated Financial Statements.....  44
Report of Management...........................  65
Report of Independent Auditors.................  65
Historical Review..............................  66

<PAGE>   2



                               COMERICA INCORPORATED 1999 ANNUAL REPORT       21


TABLE 1: SELECTED FINANCIAL DATA

<TABLE>
<CAPTION>

Year Ended December 31
(dollar amounts in millions, except per share data)           1999        1998         1997        1996        1995
- ---------------------------------------------------------------------------------------------------------------------
<S>                                                         <C>         <C>          <C>         <C>         <C>
EARNINGS SUMMARY
Total interest income                                       $  2,673    $  2,617     $  2,648    $  2,563    $  2,614
Net interest income                                            1,547       1,461        1,443       1,412       1,300
Provision for credit losses                                      114         113          146         114          87
Securities gains                                                   5           6            5          14          12
Noninterest income
   (excluding securities gains)                                  712         597          523         493         487
Restructuring charge                                               -          (7)           -          90           -
Noninterest expenses
   (excluding restructuring charge)                            1,117       1,027        1,008       1,069       1,086
Net income                                                       673         607          530         417         413

PER SHARE OF COMMON STOCK
Basic net income                                            $   4.20    $   3.79     $   3.24    $   2.41    $   2.38
Diluted net income                                              4.14        3.72         3.19        2.38        2.37
Cash dividends declared                                         1.44        1.28         1.15        1.01        0.91
Common shareholders' equity                                    20.60       17.94        16.02       14.70       15.17
Market value                                                   46.69       68.19        60.17       34.92       26.67

YEAR-END BALANCES
Total assets                                                $ 38,653    $ 36,601     $ 36,292    $ 34,206    $ 35,470
Total earning assets                                          36,046      33,427       33,104      31,110      32,051
Total loans                                                   32,693      30,605       28,895      26,207      24,442
Total deposits                                                23,291      24,313       22,586      22,367      23,167
Total borrowings                                              11,348       8,862       10,479       8,731       9,319
Medium- and long-term debt                                     8,580       5,282        7,286       4,242       4,644
Common shareholders' equity                                    3,225       2,797        2,512       2,366       2,608

DAILY AVERAGE BALANCES
Total assets                                                $ 36,960    $ 34,987     $ 34,869    $ 34,195    $ 34,129
Total earning assets                                          34,079      32,113       32,025      31,370      31,537
Total loans                                                   31,560      28,599       27,209      25,352      23,561
Total deposits                                                22,519      22,253       21,946      22,258      21,655
Total borrowings                                              10,771       9,452        9,798       8,850       9,639
Medium- and long-term debt                                     7,289       6,032        5,980       4,745       4,510
Common shareholders' equity                                    2,999       2,617        2,408       2,554       2,511

RATIOS
Return on average assets                                        1.82%       1.74%        1.52%       1.22%       1.21%
Return on average common shareholders' equity                  21.86       22.54        21.32       15.98       16.46
Efficiency ratio                                               49.35       49.39        51.04       60.36       60.09
Dividend payout ratio                                             35          34           36          42          38
Average common shareholders' equity as
   a percent of average assets                                  8.11        7.48         6.91        7.47        7.36
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>   3


22   COMERICA INCORPORATED 1999 ANNUAL REPORT

1999 FINANCIAL HIGHLIGHTS

CENTERED ON PERFORMANCE
- - Earned 21.86 percent on average common shareholders' equity, compared to
  22.54 percent in 1998.

- - Returned 1.82 percent on average assets, compared to 1.74 percent in 1998.

REPORTED RECORD EARNINGS
- - Reported net income of $673 million, or $4.14 per share, compared with $607
  million, or $3.72 per share in 1998.

SUSTAINED GROWTH
- - Generated a 17 percent increase in business loans, averaging $29 billion.

- - Experienced growth in noninterest income of $114 million, or 19 percent.

- - Averaged $37 billion in total assets in 1999, a 6 percent increase from 1998.

- - Increased average shareholders' equity to $3.2 billion.

ENHANCED SHAREHOLDERS' RETURN
- - Raised the quarterly cash dividend 12.5 percent to $0.36 per share, an annual
  rate of $1.44 per share.

IMPLEMENTED KEY STRATEGIES
- - Formed relationship with Trammel Crow Corporate Services to reduce real estate
  operating costs.

- - Opened new loan production offices in Atlanta, Chicago and Stamford,
  Connecticut.

- - Opened new international finance offices in Hong Kong and Sao Paulo.

- - Opened a new personal trust office in Phoenix.

RETURN ON AVERAGE ASSETS
(in percentages)

<TABLE>
<CAPTION>


                                       1995       1996       1997       1998       1999
<S>                                    <C>        <C>        <C>        <C>        <C>
Comerica                               1.21       1.22       1.52       1.74       1.82
Excluding Restructuring Charge                    1.40
Industry Average                       1.12       1.26       1.31       1.22       1.39
</TABLE>


EARNINGS PERFORMANCE

NET INTEREST INCOME

Net interest income, on a fully taxable equivalent (FTE) basis, is the
difference between interest earned on assets, including certain yield related
fees, and interest paid on liabilities. Interest expense includes the net
interest income or expense associated with risk management interest rate swaps.
Adjustments are made to the yields on tax-exempt assets in order to present
tax-exempt income and fully taxable income on a comparable basis. Net interest
income (FTE) comprised 68 percent of net revenues in 1999, compared to 71
percent in 1998 and 73 percent in 1997.

NET INTEREST INCOME

<TABLE>
<CAPTION>

                                  1995       1996       1997       1998       1999
<S>                               <C>        <C>        <C>        <C>        <C>
Net Interest Income (FTE)         1,321      1,427      1,452      1,468      1,552
Net Interest Margin (FTE)          4.19       4.54       4.53       4.57       4.55
</TABLE>



<PAGE>   4


                               COMERICA INCORPORATED 1999 ANNUAL REPORT       23


TABLE 2: ANALYSIS OF NET INTEREST INCOME -
FULLY TAXABLE EQUIVALENT

<TABLE>
<CAPTION>

                                                     1999                            1998                           1997
- ------------------------------------------------------------------------------------------------------------------------------------
                                         Average                Average  Average               Average   Average             Average
(dollar amounts in millions)             Balance    Interest     Rate    Balance    Interest    Rate     Balance   Interest    Rate
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                      <C>        <C>         <C>      <C>        <C>        <C>       <C>      <C>        <C>
Commercial loans                         $ 19,681   $  1,516     7.70%   $ 16,973   $  1,365     8.04%  $ 14,234   $  1,174    8.25%
International loans                         2,627        206     7.86       2,342        187     7.97      1,953        138    7.07
Real estate construction loans              1,364        116     8.48         989         91     9.24        866         81    9.38
Commercial mortgage loans                   4,461        368     8.25       3,819        334     8.74      3,547        322    9.08
Residential mortgage loans                    929         69     7.47       1,325        102     7.69      1,676        133    7.90
Consumer loans                              1,816        181     9.98       2,575        263    10.20      4,486        440    9.81
Lease financing                               682         47     6.84         576         44     7.65        447         33    7.48
- ------------------------------------------------------------------------------------------------------------------------------------
    Total loans (1)                        31,560      2,503     7.93      28,599      2,386     8.34     27,209      2,321    8.53
Taxable securities                          2,309        156     6.67       3,232        217     6.72      4,490        309    6.84
Securities exempt from
    federal income taxes                       94          8     9.09         139         12     9.16        197         18    9.32
- ------------------------------------------------------------------------------------------------------------------------------------
    Total investment securities             2,403        164     6.76       3,371        229     6.81      4,687        327    6.94
Short-term investments                        116         11     8.85         143          9     6.25        129          9    6.59
- ------------------------------------------------------------------------------------------------------------------------------------
    Total earning assets                   34,079      2,678     7.85      32,113      2,624     8.17     32,025      2,657    8.29
Cash and due from banks                     1,518                           1,622                          1,686
Allowance for credit losses                  (463)                           (440)                          (402)
Accrued income and other assets             1,826                           1,692                          1,560
- -------------------------------------------------                        --------                       --------
    Total assets                         $ 36,960                        $ 34,987                       $ 34,869
=================================================                        ========                       ========
Money market and NOW accounts            $  7,664        208     2.71    $  7,346        231     3.15   $  6,926        232    3.35
Savings deposits                            1,513         24     1.59       1,584         28     1.79      1,701         34    2.02
Certificates of deposit                     6,399        310     4.84       6,521        345     5.29      6,699        361    5.39
Foreign office deposits(2)                    688         48     7.05         651         44     6.71        805         46    5.68
- ------------------------------------------------------------------------------------------------------------------------------------
    Total interest-bearing deposits        16,264        590     3.63      16,102        648     4.02     16,131        673    4.17
Federal funds purchased and
    securities sold under agreements
      to repurchase                         2,823        146     5.16       2,510        137     5.44      2,017        111    5.49
Other borrowed funds                          659         33     5.07         910         49     5.40      1,801         98    5.45
Medium- and long-term debt                  7,289        411     5.63       6,032        368     6.10      5,980        374    6.26
Other (3)                                      --        (54)      --          --        (46)      --         --        (51)     --
- ------------------------------------------------------------------------------------------------------------------------------------
    Total interest-bearing sources         27,035      1,126     4.16      25,554      1,156     4.52     25,929      1,205    4.65
Noninterest-bearing deposits                6,255                           6,151                          5,815
Accrued expenses and other
    liabilities                               421                             415                            467
Preferred stock                               250                             250                            250
Common shareholders' equity                 2,999                           2,617                          2,408
- ------------------------------------------------------------------------------------------------------------------------------------
    Total liabilities and
      shareholders' equity               $ 36,960                        $ 34,987                       $ 34,869
=================================================                        ========                       ========
Net interest income/rate spread (FTE)               $  1,552     3.69               $  1,468     3.65              $  1,452    3.64
                                                    ========                        ========                       ========
FTE adjustment (4)                                  $      5                        $      7                       $      9
                                                    ========                        ========                       ========
Impact of net noninterest-bearing
    sources of funds                                             0.86                            0.92                          0.89
- ------------------------------------------------------------------------------------------------------------------------------------
Net interest margin (as a percent of
    average earning assets) (FTE)                                4.55%                           4.57%                         4.53%
====================================================================================================================================
</TABLE>

(1) Nonaccrual loans are included in average balances reported and are used to
calculate rates.
(2) Includes substantially all deposits by foreign depositors; deposits are
primarily in excess of $100,000.
(3) Net interest rate swap income. If swap income were allocated, average
rates on total loans would have been 8.05% in 1999, 8.43% in 1998 and 8.63% in
1997; average rates on medium- and long-term debt would have been 5.38% in 1999,
5.76% in 1998 and 5.85% in 1997.
(4) The FTE adjustment is computed using a federal income tax rate of 35%.

<PAGE>   5


24   COMERICA INCORPORATED 1999 ANNUAL REPORT

TABLE 3: RATE-VOLUME ANALYSIS -
FULLY TAXABLE EQUIVALENT

<TABLE>
<CAPTION>

                                                        1999 / 1998                                       1998 / 1997
- ------------------------------------------------------------------------------------------------------------------------------------
                                        Increase            Increase         Net          Increase            Increase          Net
                                       (Decrease)          (Decrease)   Increase         (Decrease)          (Decrease)    Increase
(in millions)                        Due to Rate     Due to Volume(*)  (Decrease)      Due to Rate     Due to Volume(*)   (Decrease)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                  <C>             <C>                <C>            <C>             <C>                <C>
Interest income (FTE)
   Commercial loans                    $  (58)            $ 209            $ 151             $(29)           $ 220            $ 191
   International loans                     (3)               22               19               17               32               49
   Real estate construction loans          (7)               32               25               (1)              11               10
   Commercial mortgage loans              (19)               53               34              (12)              24               12
   Residential mortgage loans              (3)              (30)             (33)              (4)             (27)             (31)
   Consumer loans                          (6)              (76)             (82)              18             (195)            (177)
   Lease financing                         (4)                7                3                1               10               11
- ------------------------------------------------------------------------------------------------------------------------------------
     Total loans                         (100)              217              117              (10)              75               65

   Taxable securities                       1               (62)             (61)              (7)             (85)             (92)
   Securities exempt from
     federal income taxes                  --                (4)              (4)              (1)              (5)              (6)
- ------------------------------------------------------------------------------------------------------------------------------------
     Total investment securities            1               (66)             (65)              (8)             (90)             (98)

   Short-term investments                   5                (3)               2               --               --               --
- ------------------------------------------------------------------------------------------------------------------------------------
     Total interest income (FTE)          (94)              148               54              (18)             (15)             (33)

Interest expense
   Money market and
     NOW accounts                         (32)                9              (23)             (14)              13               (1)
   Savings deposits                        (3)               (1)              (4)              (4)              (2)              (6)
   Certificates of deposit                (29)               (6)             (35)              (6)             (10)             (16)
   Foreign office deposits                  2                 2                4                8              (10)              (2)
- ------------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing deposits      (62)                4              (58)             (16)              (9)             (25)

   Federal funds purchased and
     securities sold under
        agreements to repurchase           (7)               16                9               (1)              27               26
   Other borrowed funds                    (3)              (13)             (16)              (1)             (48)             (49)
   Medium- and long-term debt             (28)               71               43               (9)               3               (6)
   Other (1)                               (8)               --               (8)               5               --                5
- ------------------------------------------------------------------------------------------------------------------------------------
     Total interest expense              (108)               78              (30)             (22)             (27)             (49)
- ------------------------------------------------------------------------------------------------------------------------------------
     Net interest income (FTE)         $   14             $  70            $  84             $  4            $  12            $  16
====================================================================================================================================
</TABLE>

(*) Rate/volume variances are allocated to variances due to volume.
(1) Net interest rate swap income.

<PAGE>   6

                               COMERICA INCORPORATED 1999 ANNUAL REPORT       25

Net interest income (FTE) rose 6 percent to $1,552 million in 1999. Contributing
to this increase was a 10 percent increase in average total loans and an
increase in noninterest-bearing sources of funds, primarily shareholders'
equity. A significant increase of 16 percent in average commercial loans was
partially offset by planned reductions of investment securities, which decreased
on average by $1.0 billion, or 29 percent, from 1998, and planned runoff of
residential mortgage and consumer loans, which declined on average by a combined
$1.2 billion from the prior year.

The net interest margin remained relatively stable in 1999, decreasing 2 basis
points to 4.55 percent from 4.57 percent last year. The decrease in the net
interest margin was partially due to a 6 basis point decline in the impact of
net noninterest-bearing sources of funds resulting from an average yield
environment which was lower in 1999 than 1998, as well as changes in the mix of
interest-bearing liabilities. This was offset by a strategic repositioning which
occurred within the earning assets portfolio, whereby investment securities and
residential mortgage loans were replaced with commercial loans. With the
repositioning effectively completed and deposit balances growing at rates slower
than earning assets, a greater reliance on purchased funds is expected, which
will gradually reduce the margin.

Comerica (the "Corporation") applied various asset and liability management
tactics to minimize exposure to net interest income risk. This risk represents
the potential reduction in net interest income that may result from a
fluctuating economic environment including changes to interest rates and
portfolio growth rates. Such actions included the tactical management of earning
assets, funding and capital. In addition, off-balance sheet interest rate swap
contracts were employed, effectively fixing the yields on certain variable rate
loans and altering the interest rate characteristics of debt issued throughout
the year. Refer to page 34 of this financial review for additional information
regarding the Corporation's asset and liability management policies.

In 1998,net interest income (FTE) increased 1 percent over 1997,benefitting from
strong growth in average earning assets, primarily commercial loans. The growth
in average commercial loans was offset by the sale of $2.0 billion of indirect
consumer loans and non-relationship credit card receivables in the second
quarter of 1998. The net interest margin for 1998 was 4.57 percent, an increase
of 4 basis points from 1997. The increase in the net interest margin was
primarily due to an increase in the impact of noninterest-bearing sources of
funds, the consumer loan divestitures and a reduced emphasis on investment
securities in the mix of earning assets.

PROVISION AND ALLOWANCE FOR CREDIT LOSSES

The provision for credit losses reflects management's evaluation of the adequacy
of the allowance for credit losses. The allowance for credit losses represents
management's assessment of probable credit losses inherent in the Corporation's
loan portfolio, including all binding commitments to lend. The allowance
provides for probable losses that have been identified with specific customer
relationships and for probable losses believed to be inherent but that have not
been specifically identified. The Corporation allocates the allowance for credit
losses to each loan category based on a defined methodology, which has been in
use, without material change, for several years. Internal risk ratings are
assigned to each corporate loan at the time of approval and are subject to
subsequent periodic reviews by the senior management of the Credit Policy Group.
Corporate loans are defined as those belonging to the commercial, international,
real estate construction, commercial mortgage and lease financing categories. A
detailed credit quality review is performed quarterly on large corporate loans
which have deteriorated below certain levels of credit risk. A specific portion
of the allowance is allocated to such loans based upon this review. The portion
of the allowance allocated to the remaining corporate loans is determined by
applying projected loss ratios to each risk rating based on numerous factors
identified below. The portion of the allowance allocated to consumer loans is
determined by applying projected loss ratios to various segments of the loan
portfolio. Projected loss ratios incorporate factors such as recent loan loss
experience, current economic conditions and trends, geographic dispersion of
borrowers, and trends with respect to past due and nonaccrual amounts. The
allocated reserve was $271 million at December 31,1999, an increase of $44
million from 1998. Allocations to corporate loans, as shown in Table 8,
increased from loan growth and changing credit characteristics of the portfolio.
Consumer loan allocations declined as credit quality improved and loan
outstandings declined.

Actual loss ratios experienced in the future could vary from those projected.
This uncertainty occurs because other factors affecting the determination of
probable losses inherent in the loan portfolio may exist which are not
necessarily captured by the application of historical loss ratios. To ensure a
higher degree of confidence, an unallocated allowance is also maintained. The
unallocated portion of the reserve reflects

NET LOANS CHARGED OFF TO AVERAGE LOANS
(in percentages)

<TABLE>
<CAPTION>

                       1995       1996       1997       1998       1999

<S>                    <C>        <C>        <C>        <C>        <C>
Comerica               0.32       0.33       0.33       0.30       0.29
Industry Average       0.53       0.51       0.56       0.48       0.47
</TABLE>
<PAGE>   7

26   COMERICA INCORPORATED 1999 ANNUAL REPORT

TABLE 4: ANALYSIS OF THE ALLOWANCE FOR CREDIT LOSSES

<TABLE>
<CAPTION>

Year Ended December 31
(dollar amounts in millions)                              1999         1998         1997         1996        1995
- -----------------------------------------------------------------------------------------------------------------
<S>                                                       <C>          <C>          <C>          <C>         <C>
Balance at beginning of period                            $452         $424         $367         $341        $326

Allowance of institutions purchased/sold                    --           --           --           (3)          4

Loans charged off
   Domestic
      Commercial                                            78           49           33           33          33
      Real estate construction                              --           --            1            1           3
      Commercial mortgage                                    2            1            4            5           8
      Residential mortgage                                  --           --           --            1           2
      Consumer                                              31           65           92           86          73
      Lease financing                                       --            4           --           --          --
   International                                            10            7            1           --          --
- -----------------------------------------------------------------------------------------------------------------
      Total loans charged off                              121          126          131          126         119

Recoveries
   Domestic
      Commercial                                            17           19           19           18          19
      Real estate construction                              --           --            1            1           3
      Commercial mortgage                                    3            9           10            9           8
      Consumer                                              10           13           12           13          13
      Lease financing                                        1           --           --           --          --
- -----------------------------------------------------------------------------------------------------------------
      Total recoveries                                      31           41           42           41          43
- -----------------------------------------------------------------------------------------------------------------
      Net loans charged off                                 90           85           89           85          76

Provision for credit losses                                114          113          146          114          87
- -----------------------------------------------------------------------------------------------------------------
Balance at end of period                                  $476         $452         $424         $367        $341
=================================================================================================================
Ratio of allowance for credit losses to total loans
   at end of period                                       1.46%        1.48%        1.47%        1.40%       1.40%

Ratio of net loans charged off during the period
   to average loans outstanding during the period         0.29%        0.30%        0.33%        0.33%       0.32%
=================================================================================================================
</TABLE>

management's view that the reserve should have a margin that recognizes the
imprecision underlying the process of estimating expected credit losses.
Determination of the probable losses inherent in the portfolio, which are not
necessarily captured by the allocated methodology discussed above, involves the
exercise of judgement. Factors which were considered in the evaluation of the
adequacy of the Corporation's unallocated reserve include portfolio exposures to
the healthcare, high technology and energy industries, hedge funds and customers
engaged in sub-prime lending, as well as Indonesian and Latin American transfer
risks and the risk associated with new customer relationships. The unallocated
allowance was $205 million at December 31, 1999, a decrease of $20 million from
December 31,1998. This decrease in the unallocated allowance was primarily due
to a managed reduction in loans to customers in the sub-prime and hedge fund
portfolios, partially offset by an increase in healthcare loans.

Management also considers industry norms and the expectations from rating
agencies and banking regulators in determining the adequacy of the allowance.
The total allowance, including the unallocated amount, is available to absorb
losses from any segment of the portfolio.

The provision for credit losses was $114 million in 1999, compared to $113
million in 1998 and $146 million in 1997. The provision in 1999 was virtually
unchanged from 1998, while the decrease in 1998 from 1997 was primarily due to
the consumer loan sale in the second quarter of 1998.

Total net charge-offs remained in the same relative range, at $90 million in
1999, compared to $85 million in 1998 and $89 million in 1997. The ratio of net
loans charged off to average total loans was 0.29 percent in 1999 and 0.30
percent in 1998. Commercial loan net charge-offs as a percentage of average
commercial loans were 0.31 percent for 1999 and 0.18 percent for 1998.
Commercial net charge-offs in 1999

<PAGE>   8

                               COMERICA INCORPORATED 1999 ANNUAL REPORT       27

were primarily related to mortgage banking customers and long-term health care
providers. Consumer loan net charge-offs as a percentage of average consumer
loans were 1.16 percent for 1999 and 2.03 percent for 1998.

At December 31, 1999, the allowance for credit losses was $476 million, an
increase of $24 million since year-end 1998. The allowance as a percentage of
total loans decreased to 1.46 percent from 1.48 percent at December 31, 1998.
The allowance as a percentage of total nonperforming assets decreased to 262
percent at December 31, 1999, from 375 percent at year-end 1998.

NONINTEREST INCOME

<TABLE>
<CAPTION>

Year Ended December 31
(in millions)                                   1999       1998       1997
- ---------------------------------------------------------------------------
<S>                                             <C>        <C>        <C>
Fiduciary and investment management income      $241       $184       $147
Service charges on deposit accounts              169        158        141
Commercial lending fees                           49         43         32
Letter of credit fees                             39         31         26
Securities gains                                   5          6          5
Other                                            184        167        150
- ---------------------------------------------------------------------------
   Subtotal                                      687        589        501
Consumer businesses sold                          --         14          4
Bond indenture business sold                      --         --         23
Other significant nonrecurring items              30         --         --
- ---------------------------------------------------------------------------
   Total noninterest income                     $717       $603       $528
===========================================================================
</TABLE>

Noninterest income increased $114 million, or 19 percent, to $717 million in
1999, compared to $603 million in 1998 and $528 million in 1997. Comparisons
between 1999 and 1998 for certain noninterest income and noninterest expense
line items were impacted by the Corporation obtaining a majority interest in
Munder Capital Management ("Munder"), an investment advisory subsidiary, in July
1998 and the sale of consumer loans and the mortgage servicing business in 1998.
Prior to the third quarter of 1998, the Corporation accounted for its minority
interest in Munder under the equity method, recording the Corporation's pro-rata
share of Munder net income in other noninterest income. After adjusting for
acquisitions, divestitures, securities gains and the significant nonrecurring
items discussed below, noninterest income increased $78 million, or 13 percent,
in 1999.


NONINTEREST INCOME
(in millions)

<TABLE>
<CAPTION>

                             1995       1996       1997       1998       1999
<S>                          <C>        <C>        <C>        <C>        <C>
Comerica                     499        507        528        603        717
</TABLE>

Fiduciary and investment management income increased $57 million, or 30 percent,
in 1999 compared to an increase of $37 million, or 25 percent, in 1998. After
adjusting for the Munder consolidation, the increase over 1998 was 19 percent.
Investment management income increased $43 million, or 240 percent, in 1999,
principally due to the consolidation of Munder and the growth of assets in
Munder's NetNet Fund, a mutual fund comprised primarily of Internet-related
stocks. Personal trust income increased 10 percent in 1999 and reflects strong
overall growth from new business and market performance of assets under
management.

Service charges on deposit accounts increased $11 million, or 7 percent, in 1999
compared to an increase of $17 million, or 12 percent, in 1998. This increase
was primarily attributable to continued strong growth in the sale of new and
existing electronic cash management services to commercial customers during
1999.

Commercial lending fees increased $6 million, or 13 percent, in 1999 compared to
an increase of $11 million, or 38 percent, in 1998. Continued strong corporate
lending activities to new and existing customers contributed to this increase.

Letter of credit fees increased $8 million, or 24 percent, in 1999 compared to
an increase of $5 million, or 20 percent, in 1998. These increases were
primarily related to the growth in middle-market commercial lending and
additional investment in international trade services.

Income from securities gains totaled $5 million in 1999, a decrease of $1
million from 1998.

Other noninterest income increased $33 million, or 19 percent, in 1999.
Excluding the impact of acquisitions, divestitures and significant nonrecurring
items in both periods, other noninterest income increased 9 percent. Higher
levels of foreign exchange income, bankcard fees, brokerage service fees and
investment banking fees accounted for the majority of this increase. Significant
nonrecurring items in other noninterest income in 1999 include a $21 million
gain on the sale of the Corporation's ownership in an automated teller machine
network provider and a $9 million gain on the sale of a warrant obtained from an
equity ownership in a joint venture. Significant nonrecurring items in 1998
include an $11 million net gain on the sale of the mortgage servicing business
and consumer loans, while 1997 includes a $23 million gain on the sale of the
Corporation's bond indenture services business.

<PAGE>   9
28       COMERICA INCORPORATED 1999 ANNUAL REPORT

NONINTEREST EXPENSES
<TABLE>
<CAPTION>
Year Ended December 31
(in millions)                               1999      1998      1997
- --------------------------------------------------------------------
<S>                                         <C>       <C>       <C>
Salaries                                    $559      $500      $464
Employee benefits                             81        65        75
- --------------------------------------------------------------------
   Total salaries and
     employee benefits                       640       565       539
Net occupancy expense                         94        90        89
Equipment expense                             61        60        62
Outside processing fee expense                48        43        42
Other                                        269       269       271
- --------------------------------------------------------------------
   Subtotal                                1,112     1,027     1,003
Restructuring charge                          --        (7)       --
Other significant nonrecurring items           5        --         5
- --------------------------------------------------------------------
   Total noninterest expenses             $1,117    $1,020    $1,008
====================================================================
</TABLE>

Noninterest expenses increased 10 percent to $1,117 million in 1999, compared to
$1,020 million in 1998 and $1,008 million in 1997. Excluding the effect of the
acquisitions, divestitures and the significant nonrecurring items discussed
below, non-interest expenses increased $64 million, or 6 percent, in 1999.

Total salaries expense increased $59 million, or 12 percent, in 1999 versus an
increase of $36 million, or 8 percent, in 1998. The increase in 1999 was
primarily from the consolidation of Munder, annual merit increases and higher
levels of revenue-related incentives. The number of full-time equivalent
employees increased 100, or 1 percent, from year-end 1998, primarily due to
investments in strategic businesses.

Employee benefits expense increased $16 million, or 24 percent, in 1999 versus a
decrease of $10 million, or 13 percent, in 1998. The increase in 1999 was
primarily due to reduced pension expense in 1998 as a result of benefits from
reduced staff levels related to the Direction 2000 program and the consumer and
mortgage servicing divestitures. The consolidation of Munder and an increase
in health insurance expense also contributed to the increase.

Net occupancy and equipment expenses, on a combined basis, increased $5 million,
or 3 percent, in 1999 versus a decrease of $1 million, or 1 percent, in 1998.
The majority of the 1999 increase was attributable to the consolidation of
Munder. During 1999, the Corporation formed a relationship with Trammell Crow
Corporate Services to provide property and real estate management services.
Occupancy expense also increased in 1999 due to fees paid to Trammell Crow which
replaced salaries and employee benefits expense associated with real estate
staff.

NONINTEREST EXPENSES
(in millions)

<TABLE>
<CAPTION>

                                   1995       1996      1997      1998     1999
<S>                                <C>        <C>       <C>       <C>      <C>
Comerica                           1,086      1,159     1,008     1,020    1,117
Excluding Restructuring Charge                1,069
</TABLE>

Outside processing fees totaled $48 million in 1999 and $43 million in 1998. The
increase of $5 million from the prior year is primarily due to the outsourcing
of certain consumer loan processing functions in 1999.

The Corporation recorded a restructuring charge in 1996 in connection with a
major program (Direction 2000) to improve efficiency, revenue and customer
service. A reduction of $7 million, netted against other noninterest expenses,
was made to eliminate the restructuring liability in 1998.

Other noninterest expenses increased $5 million in 1999, compared to a $7
million decrease in 1998. Other noninterest expenses in 1999 included a $5
million contribution to Comerica's charitable foundation. Other noninterest
expenses included $5 million of litigation accruals in 1997. Excluding
acquisitions, divestitures and the significant non-recurring items described
above, other noninterest expenses increased $3 million, or 1 percent. The
minimal increase reflects management's continued efforts to contain expenses.

The Corporation's efficiency ratio is defined as total noninterest expenses
divided by the sum of net interest revenue (FTE) and noninterest income,
excluding securities gains. The ratio was 49.35 percent in 1999,compared to
49.39 percent in 1998 and 51.04 percent in 1997.

INCOME TAXES

The provision for income taxes was $360 million in 1999, compared to $324
million in 1998 and $287 million in 1997. The effective tax rate, computed by
dividing the provision for income taxes by income before taxes, was 34.9 percent
in 1999, 34.8 percent in 1998 and 35.0 percent in 1997.

<PAGE>   10

                               COMERICA INCORPORATED 1999 ANNUAL REPORT       29

TABLE 5: ANALYSIS OF INVESTMENT SECURITIES AND LOANS

<TABLE>
<CAPTION>
December 31
(in millions)                                              1999          1998        1997       1996       1995
- -----------------------------------------------------------------------------------------------------------------
<S>                                                      <C>          <C>         <C>         <C>        <C>
Investment securities available for sale
  U.S. government and agency securities                   $ 2,275      $ 2,206     $ 3,239     $ 3,968    $ 6,038
  State and municipal securities                               74          115         170         228        371
  Other securities                                            390          391         597         604        450
- -----------------------------------------------------------------------------------------------------------------
     Total investment securities available for sale       $ 2,739      $ 2,712     $ 4,006     $ 4,800    $ 6,859
=================================================================================================================
Commercial loans                                          $20,655      $19,086     $15,805     $13,520    $12,041
International loans
  Government and official institutions                         10           12           6          11          6
  Banks and other financial institutions                      391          433         339         323        583
  Other                                                     2,172        2,268       1,740       1,372        796
- -----------------------------------------------------------------------------------------------------------------
     Total international loans                              2,573        2,713       2,085       1,706      1,385

Real estate construction loans                              1,709        1,080         941         751        641
Commercial mortgage loans                                   4,774        4,179       3,634       3,446      3,254
Residential mortgage loans                                    870        1,038       1,565       1,744      2,221
Consumer loans                                              1,351        1,862       4,348       4,634      4,570
Lease financing                                               761          647         517         406        330
- -----------------------------------------------------------------------------------------------------------------
     Total loans                                          $32,693      $30,605     $28,895     $26,207    $24,442
=================================================================================================================
</TABLE>

STRATEGIC LINES OF
BUSINESS

The Corporation has strategically aligned its operations into three major lines
of business: the Business Bank, the Individual Bank and the Investment Bank.
These lines of business are differentiated based on the products and services
provided. In addition to the three major lines of business, the Finance Division
is also reported as a segment. The Other category includes items not directly
associated with these lines of business. Note 22 on page 60 describes how these
segments were identified and presents financial results of these business lines
for the years ended December 31, 1999, 1998 and 1997.

Business Bank net income increased $28 million, or 8 percent, in 1999,
principally due to additional net interest income resulting from 16 percent
average loan growth and a $39 million increase in noninterest income. This was
partially offset by a higher provision for credit losses resulting from loan
growth, higher charge-offs and changing credit characteristics of the portfolio.

Individual Bank net income decreased $4 million, or 1 percent, in 1999.
Comparisons with 1998 were affected by the sale of the mortgage servicing
business and $2.0 billion of consumer assets in 1998. Net interest income
increased $20 million, or 3 percent, from 1998, generated principally from
retail deposits. The provision for credit losses in 1999 reflects the reduction
of the allowance which was allocated to the bankcard and revolving check credit
loans transferred to loans held for sale and a decline in net charge-offs
resulting from a decrease in average loans and improved credit quality. The
provision in 1998 reflects the reduction in the allowance resulting from the
sale of $2.0 billion of indirect consumer loans and credit card receivables.
Noninterest income in 1998 includes an $11 million net gain on the sale of the
mortgage servicing business and consumer loans.

Net income for the Investment Bank was $3 million in 1999, compared to $4
million in 1998.

Net income for Finance decreased $25 million in 1999, primarily due to a
decrease in net interest income of $39 million. The net interest income of the
Finance Division is mostly the result of hedging interest rate risk generated in
the other segments. While net interest income attributed to assets with
maturities can be specifically hedged, the net interest income attributed to
most deposit liabilities, which have no maturity, can fluctuate if market rates
and market spreads vary from year to year. In 1999, the net interest margin
attributed to deposits benefitted from the level of market rates compared to the
prior year, with the offsetting decline recognized in the Finance Division,
where the risk was hedged.

Net income for Other increased $68 million in 1999, primarily due to a decline
in the allowance for credit losses not assigned to specific business lines.
Included in noninterest income for 1999 is a $21 million gain on the sale of the
Corporation's ownership in an ATM network provider. Noninterest income and
expenses include the full year results for Munder in 1999 and the third and
fourth quarter results for Munder in 1998. An adjustment of $7 million was made
in 1998, to eliminate the remaining restructuring liability associated with the
Corporation's Direction 2000 restructuring charge recorded in 1996. The
adjustment was netted against noninterest expenses. Noninterest income in 1997
includes a $23 million gain on the sale of the Corporation's bond indenture
services business.

<PAGE>   11

30       COMERICA INCORPORATED 1999 ANNUAL REPORT

TABLE 6: INTERNATIONAL CROSS-BORDER RISK

<TABLE>
<CAPTION>

                            Governments             Banks and
December 31                and Official       Other Financial           Commercial
(in millions)              Institutions          Institutions       and Industrial       Total
- ---------------------------------------------------------------------------------------------
<S>        <C>             <C>                <C>                   <C>                  <C>
Mexico     1999                     $15                  $150                 $426       $591
           1998                      15                   214                  347        576
           1997                      41                    78                  295        414
- ---------------------------------------------------------------------------------------------
Canada     1998                      --                    --                  380        380
- ---------------------------------------------------------------------------------------------
</TABLE>

TABLE 7: LOAN MATURITIES AND INTEREST RATE SENSITIVITY

<TABLE>
<CAPTION>

                                                          After One
December 31, 1999                       Within           But Within            After
(in millions)                         One Year(*)        Five Years       Five Years         Total
- --------------------------------------------------------------------------------------------------
<S>                                   <C>                <C>              <C>              <C>
Commercial loans                         $15,658             $3,999           $  998       $20,655
Commercial mortgage loans                  1,368              2,261            1,145         4,774
International loans                        2,329                215               29         2,573
Real estate construction loans             1,153                436              120         1,709
- --------------------------------------------------------------------------------------------------
     Total                               $20,508             $6,911           $2,292       $29,711
==================================================================================================
Loans maturing after one year
   Predetermined interest rates                              $3,013           $1,904
   Floating interest rates                                    3,898              388
- --------------------------------------------------------------------------------------------------
     Total                                                   $6,911           $2,292
==================================================================================================
</TABLE>

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

TABLE 8: ALLOCATION OF THE ALLOWANCE FOR CREDIT LOSSES

<TABLE>
<CAPTION>

                               1999                1998                 1997                  1996                 1995
- --------------------------------------------------------------------------------------------------------------------------
December 31
(in millions)               Amount   %          Amount    %          Amount    %           Amount   %           Amount   %
- --------------------------------------------------------------------------------------------------------------------------
<S>                         <C>      <C>         <C>     <C>         <C>      <C>           <C>    <C>          <C>     <C>
Commercial                  $169     63%         $131    62%         $  94    55%           $98    52%          $118    49%
Real estate construction       6      5             4     4              7     3              6     3              5     3
Commercial mortgage           35     15            21    14             18    13             27    13             33    13
Residential mortgage          --      3            --     3              1     5              2     7              2     9
Consumer                      18      4            48     6            116    15            120    18             84    19
Lease financing                8      2             6     2              1     2              1     1              1     1
International                 35      8            17     9              5     7              3     6              2     6
Unallocated                  205     --           225    --            182    --            110    --             96    --
- --------------------------------------------------------------------------------------------------------------------------
     Total                  $476    100%         $452   100%          $424   100%          $367   100%          $341   100%
==========================================================================================================================
</TABLE>

Amount - allocated allowance
% - loans outstanding as a percent of total loans

<PAGE>   12
                               COMERICA INCORPORATED 1999 ANNUAL REPORT       31

BALANCE SHEET AND CAPITAL FUNDS ANALYSIS

Total assets were $38.7 billion at year-end 1999, representing a $2.1 billion
increase from $36.6 billion on December 31, 1998. On an average basis, total
assets increased to $37.0 billion in 1999 from $35.0 billion in 1998. This
increase was funded primarily by purchased funds, which rose on average $1.3
billion and shareholders' equity, which increased on average $382 million.

EARNING ASSETS

Total earning assets were $36.0 billion at year-end 1999, representing a $2.6
billion increase from $33.4 billion at December 31, 1998. On an average basis,
total earning assets were $34.1 billion in 1999, compared to $32.1 billion in
1998. The average balance of commercial and commercial mortgage loans increased
$3.3 billion, or 16 percent, from 1998. Real estate construction loans also rose
an average $375 million, or 38 percent, in 1999. The corporate portfolio
continues to grow in all of the Corporation's markets, especially in loans to
companies with sales over $5 million. This growth is attributable to effective
marketing efforts, strong customer relationships and continued economic strength
in the commercial loan markets.

International loans averaged $2.6 billion in 1999, an increase of $285 million
from 1998. Approximately 17 percent of this increase was attributable to loan
growth in the Corporation's Canadian commercial banking subsidiary, much of
which was funded locally and does not cause cross-border risk. The remaining
growth reflects the increasing global activity of the Corporation's traditional
customer base. Risk management practices are undertaken to minimize risk
inherent in international lending arrangements. These practices include
structuring bilateral arrangements or participating in bank facilities which
secure repayment from sources external to the borrower's country. Accordingly,
such international outstandings are excluded from cross-border risk of that
country. Mexican cross-border risk of $591 million, or 1.53 percent of assets,
was the only country with exposure exceeding 1.00 percent of assets at December
31, 1999. There were no countries with exposure between 0.75 percent and 1.00
percent of total assets at year-end 1999. Additional information on the
Corporation's Mexican cross-border risk is provided in Table 6 on page 30.

Average residential mortgage loans decreased $396 million primarily due to
management's decision to sell the majority of mortgage originations. Average
consumer loans, comprised of installment, revolving credit and bankcard loans,
declined $759 million in 1999. The decline in consumer loans is a result of the
1998 sale of $2.0 billion of indirect consumer loans and non-relationship
bankcard receivables. Average installment, revolving credit and bankcard loans
decreased $592 million, $83 million and $84 million, respectively, during the
period. Consumer loans at December 31, 1999, reflect the reclassification of
$493 million of revolving check credit and bankcard loans to loans held for
sale, pending sale in 2000.

Average investment securities declined to $2.4 billion in 1999, compared to $3.4
billion in 1998. As part of repositioning the Corporation's balance sheet,
investment securities were allowed to runoff during the first three quarters of
1999 to fund growth in higher-yielding loans and to divest lower earning
variable rate assets. With this repositioning effectively complete, the
Corporation began purchasing investment securities in the fourth quarter of 1999
with the intent of aligning investment security growth with expected growth in
earning assets. Average U.S. government and agency securities decreased $818
million and average state and municipal securities decreased $44 million, while
average other securities decreased $106 million. Declines in U.S. government and
agency securities have primarily resulted from sales and pay downs, while the
tax exempt portfolio of state and municipal securities continued to decrease as
reduced tax advantages for these types of securities deterred additional
investment. Other securities consist primarily of collateralized mortgage
obligations (CMOs), Brady bonds and Eurobonds.

OTHER EARNING ASSETS

Short-term investments include interest-bearing deposits with banks, federal
funds sold and securities purchased under agreements to resell, trading
securities and loans held for sale. These investments provide a range of
maturities under one year to manage the short-term investment requirements of
the Corporation. Interest-bearing deposits with banks are investments with banks
in developed countries or foreign banks' international banking facilities
located in the United States. Federal funds sold offer supplemental earnings
opportunities and serve correspondent banks. Included in loans held for sale at
December 31, 1999, are $493 million of revolving check credit and bankcard loans
pending sale in 2000. Average short-term investments decreased slightly to $116
million during 1999, from $143 million during 1998.

TABLE 9: MATURITY DISTRIBUTION OF DOMESTIC CERTIFICATES OF DEPOSIT OF $100,000
         AND OVER

<TABLE>
<CAPTION>
December 31
(in millions)                           1999
- ---------------------------------------------
<S>                                    <C>
Three months or less                   $1,623
Over three months to six months           365
Over six months to twelve months          366
Over twelve months                        186
- ---------------------------------------------
    TOTAL                              $2,540
=============================================
</TABLE>
<PAGE>   13
32       COMERICA INCORPORATED 1999 ANNUAL REPORT

DEPOSITS AND BORROWED FUNDS

Average deposits increased $266 million, or 1 percent, from 1998. Average
noninterest-bearing deposits grew $104 million, or 2 percent, from 1998, largely
due to the growth in commercial loan relationships. Average interest-bearing
transaction, savings and money market deposits increased 3 percent during
1999, to $9.2 billion. Certificates of deposit decreased $85 million, or 1
percent, on an average basis from 1998.

Average federal funds purchased and securities sold under agreements to
repurchase increased $313 million, or 12 percent, from 1998. The majority of
this increase was offset by a net decrease in average other borrowed funds,
which declined $251 million, or 28 percent, from 1998. Other borrowed funds
include term federal funds purchased and treasury tax and loan notes. The
decline in other borrowed funds was attributable to lower levels of available
collateral to secure treasury tax and loan notes.

The Corporation uses medium-term debt (both domestic and European) and long-term
debt to provide the necessary funding to support expanding earning assets. These
notes assist the Corporation in providing liquidity which mirrors the estimated
duration of our deposits. Long-term subordinated notes further help maintain the
subsidiary banks' total capital ratio at a level that qualifies for the lowest
FDIC risk-based insurance premium. Medium-term debt increased $3.4 billion
representing the net result of the issuance of $6.3 billion and the maturity
of $2.9 billion of notes during 1999. Long-term debt decreased $77 million
during 1999, primarily due to the maturity of $75 million of subordinated notes.
Further information on medium- and long-term debt is included in Note 9 of the
consolidated financial statements on page 49.

CAPITAL

Shareholders' equity was $3.5 billion at December 31, 1999, up $428 million, or
14 percent from December 31, 1998. This increase was primarily due to the net
effect of increases from retained earnings of $431 million and $26 million of
common stock issued for employee stock plans and a decrease of $25 million in
nonowner equity. At December 31, 1999, the Corporation had remaining
authorization to purchase 20 million shares of common stock. Further information
on the change in nonowner equity is provided in Note 11 on page 50.

The Corporation declared common dividends totaling $225 million on net income
applicable to common stock of $655 million, representing a dividend payout ratio
of 35 percent. The payout ratio in 1998 was 34 percent.

At December 31, 1999, the Corporation and all of its banking subsidiaries
exceeded the capital ratios required for an institution to be considered "well
capitalized" by the standards developed under the Federal Deposit Insurance
Corporation Improvement Act of 1991. See Note 17 of the consolidated financial
statements on page 54 for the capital ratios.

RISK MANAGEMENT

The Corporation assumes various types of risk in the normal course of business.
The most significant risk exposures are credit, interest rate, liquidity and
operational risk. The other commonly identified exposure, market risk, is not
significant as trading activities are limited. Comerica employs risk management
processes to identify, measure, monitor and control these risks.

CREDIT RISK

Credit risk represents the risk that a customer or counterparty may not perform
in accordance with contractual terms. Credit risk is inherent in the financial
services business and results from extending credit to customers, purchasing
securities and entering into off-balance sheet financial derivative instruments.
Policies and procedures for measuring and managing this risk are formulated,
approved and communicated throughout the Corporation. Credit executives,
independent from lending officers, are involved in the origination and
underwriting process to ensure adherence to risk policies and underwriting
standards. The Corporation also manages credit risk through diversification,
limiting exposure to any single industry or customer, selling participations to
third parties and requiring collateral.

NONPERFORMING ASSETS

The Corporation's policies regarding nonaccrual loans reflect the importance of
identifying troubled loans early. Consumer loans are directly charged off no
later than 180 days past due, or earlier if deemed uncollectible. Loans other
than consumer are generally placed on nonaccrual status when management
determines that principal or interest may not be fully collectible, but no later
than when the loan is 90 days past due on principal or interest unless it is
fully collateralized and in the process of collection. Loan amounts in excess of
probable future

NONPERFORMING ASSETS TO LOANS AND OTHER
REAL ESTATE
(IN PERCENTAGES)

<TABLE>
<CAPTION>
                      1995       1996       1997       1998       1999
<S>                   <C>        <C>        <C>        <C>        <C>
Comerica              0.67       0.53       0.36       0.39       0.56
Industry Average      1.23       0.79       0.71       0.73       0.64
</TABLE>
<PAGE>   14

                               COMERICA INCORPORATED 1999 ANNUAL REPORT       33

TABLE 10: ANALYSIS OF INVESTMENT SECURITIES PORTFOLIO - FULLY TAXABLE EQUIVALENT

<TABLE>
<CAPTION>


                                                                     Maturity(+)
                                -----------------------------------------------------------------------------------------
                                                                                                                           Weighted
                                Within 1 Year    1 - 5 Years        5 - 10 Years       After 10 Years         Total        Average
December 31, 1999               -----------------------------------------------------------------------------------------  Maturity
(dollar amounts in millions)    Amount  Yield   Amount  Yield      Amount   Yield      Amount   Yield    Amount     Yield  Yrs./Mos.
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>     <C>     <C>     <C>       <C>       <C>        <C>      <C>      <C>        <C>    <C>
Available for sale
  U.S. Treasury                  $59     5.43%   $ --       --%   $    --       --%     $ --      --%    $   59      5.43%   0/10
  U.S. government
    and agency                     4     5.26     120     7.27      1,441     6.40       651    7.08      2,216      6.64    10/1
  State and municipal
    securities                    25     6.85      33     6.15         14     6.04         2    6.53         74      6.38    2/11
  Other bonds, notes
    and debentures                22     8.43     180     8.87         43     8.42        43    8.47        288      8.71     5/5
  Federal Reserve
    Bank stock and
    other investments*            --       --      --       --         --      --         --     --         102        --      --
- ------------------------------------------------------------------------------------------------------------------------------------
  Total investment
    securities available
    for sale                    $110     6.35%   $333     8.03%    $1,498    6.45%      $696   7.17%     $2,739      6.84%    9/2
====================================================================================================================================
</TABLE>

 *  Balances are excluded in the calculation of total yield.
 +  Based on final contractual maturity.

TABLE 11: SUMMARY OF NONPERFORMING ASSETS AND PAST DUE LOANS

<TABLE>
<CAPTION>
December 31
(dollar amounts in millions)                           1999        1998      1997       1996        1995
- --------------------------------------------------------------------------------------------------------
<S>                                                    <C>        <C>       <C>        <C>         <C>
Nonperforming assets
  Nonaccrual loans
    Commercial loans                                   $ 110      $  77     $  59      $  72       $  87
    International loans                                   44         20         1         --          --
    Real estate construction loans                        --          1         3          3           7
    Commercial mortgage loans                             10          7        11         23          31
    Residential mortgage loans                             1          3         4          5           6
- --------------------------------------------------------------------------------------------------------
    Total nonaccrual loans                               165        108        78        103         131

  Reduced-rate loans                                       7          8         8          8           3
- --------------------------------------------------------------------------------------------------------
    Total nonperforming loans                            172        116        86        111         134

  Other real estate                                       10          5        17         29          29
- --------------------------------------------------------------------------------------------------------
    Total nonperforming assets                         $ 182      $ 121     $ 103      $ 140       $ 163
========================================================================================================
Nonperforming loans as a percentage of total loans      0.53%      0.38%     0.30%      0.42%       0.55%
Nonperforming assets as a percentage of total loans
  and other real estate                                 0.56%      0.39%     0.36%      0.53%       0.67%
Allowance for credit losses as a percentage of total
  nonperforming assets                                   262%       375%      413%       263%        209%
Loans past due 90 days or more and still accruing      $  48      $  40     $  53        $52       $  57
========================================================================================================
</TABLE>


<PAGE>   15

34       COMERICA INCORPORATED 1999 ANNUAL REPORT

cash collections are charged off to an amount that represents management's
assessment of the ultimate collectibility of the loan. Interest previously
accrued but not collected on nonaccrual loans is charged against current income
at the time the loan is placed on nonaccrual. Income on such loans is then
recognized only to the extent that cash is received and where the future
collection of principal is probable.

Nonperforming assets as a percent of total loans and other real estate were 0.56
percent and 0.39 percent at year-end 1999 and 1998, respectively.

Nonaccrual loans at December 31, 1999, increased 53 percent to $165 million from
$108 million at year-end 1998. Table 11 on page 33 provides additional detail on
nonperforming assets. Loans to customers in the healthcare and mortgage banking
industries accounted for $34 million of the increase in commercial nonaccrual
loans. The increase in international nonaccrual loans from year-end 1998, was
primarily related to Indonesian and two Canadian customers. Loans past due 90
days or more increased $8 million from year-end 1998 and was primarily
attributable to customers related to the energy industry.

The nonaccrual loan table below indicates the percentage of nonaccrual loan
value to original contractual value which exhibits the degree to which loans
reported as nonaccrual have been charged off.

Other real estate owned (ORE) increased to $10 million.

NONACCRUAL LOANS
December 31
(dollar amounts in millions)      1999    1998
- ----------------------------------------------
Carrying value                    $165    $108
Contractual value                  244     159
Carrying value as a percentage
  of contractual value              68%     68%
==============================================

CONCENTRATION OF CREDIT

Loans to companies and individuals involved with the automotive industry,
including suppliers, manufacturers and dealers, represented the largest
significant industry concentration at December 31, 1999. These loans totaled
$4.8 billion, or 15 percent of total loans at December 31, 1999, versus $4.6
billion, or 15 percent, at December 31, 1998. These totals include floor plan
loans to automobile dealers of $1,653 million and $1,454 million at December
31, 1999 and 1998, respectively. All other industry concentrations individually
represented less than 5 percent of total loans at year-end 1999.

The Corporation has successfully operated in the Michigan economy in spite of a
loan concentration and several down-turns in the auto industry. The largest
automotive industry loan on nonaccrual status at December 31, 1999, was $8
million. There were no other automotive industry loans larger than $1 million on
nonaccrual status as of year-end 1999. In addition, there were no significant
automotive industry-related charge-offs during the year.

COMMERCIAL REAL ESTATE LENDING

The real estate construction loan portfolio contains loans primarily made to
long-time customers with satisfactory project completion experience. The
portfolio has approximately 1,128 loans, of which 66 percent have balances of
less than $1 million. The largest real estate construction loan has a balance of
approximately $23 million.

The commercial mortgage loan portfolio, 57 percent of which relates to
owner-occupied properties, also consists primarily of loans to long-time
customers. Of the approximately 7,041 loans in the portfolio,85 percent have
balances under $1 million and the largest loan has a balance of approximately
$18 million. Additionally, the Corporation's policy requires a 75 percent or
less loan-to-value ratio for all commercial mortgage and real estate
construction loans.

The geographic distribution of the real estate construction and commercial
mortgage loan portfolios is also an important factor in evaluating credit risk.
The following table indicates the diversification of the portfolios throughout
the markets served by the Corporation.

GEOGRAPHIC DISTRIBUTION

<TABLE>
<CAPTION>
December 31, 1999                   Real Estate    Commercial
(in millions)                      Construction      Mortgage
- --------------------------------------------------------------
<S>                                <C>             <C>
Michigan                             $  823         $3,109
California                              291            836
Texas                                   378            373
Florida                                 118            154
Other                                    99            302
- --------------------------------------------------------------
  TOTAL                              $1,709         $4,774
==============================================================
</TABLE>

INTEREST RATE RISK

Interest rate risk arises primarily through the Corporation's core business
activities of extending loans and taking deposits. The Corporation actively
manages its material exposure to interest rate risk. The principal objective of
asset and liability management is to maximize net interest income while
operating within acceptable limits established for interest rate risk and
maintaining adequate levels of funding and liquidity. The Corporation utilizes
various on- and off-balance sheet financial instruments to manage the extent to
which net interest income may be affected by fluctuations in interest rates. The
board of directors authorizes the Asset Liability Policy Committee (ALPC) to
establish policies and risk limits pertaining to asset and liability management
activities. The ALPC as well as the board monitors compliance with these
policies. The ALPC meets regularly to discuss asset and liability management
strategies and is comprised of executive and senior management from various
areas of the Corporation, including finance, lending, investments and deposit
gathering.

<PAGE>   16

                               COMERICA INCORPORATED 1999 ANNUAL REPORT       35

INTEREST RATE SENSITIVITY

Interest rate risk arises in the normal course of business due to differences in
the repricing and maturity characteristics of assets and liabilities. Since no
single measurement system satisfies all management objectives, a combination of
techniques is used to manage interest rate risk, including simulation analysis,
asset and liability repricing schedules and economic value of equity. The ALPC
regularly reviews the results of these interest rate risk measurements.

The Corporation frequently evaluates net interest income under various balance
sheet and interest rate scenarios. The results of these analyses provide the
information needed to assess the proper balance sheet structure. An unexpected
change in the pace of economic activity, whether domestically or
internationally, could translate into a materially different interest rate
environment than currently expected. Management evaluates "base" net interest
income under what is believed to be the most likely balance sheet structure and
interest rate environment. This "base" net interest income is then evaluated
against interest rate scenarios that are taken up and down 200 basis points from
the most likely rate environment. In addition, adjustments to asset prepayment
levels, yield curves and overall balance sheet mix and growth assumptions are
made to be consistent with each interest rate environment. These assumptions are
inherently uncertain and, as a result, the model cannot precisely predict the
impact of higher or lower interest rates on net interest income. Actual results
may differ from simulated results due to timing, magnitude and frequency of
interest rate changes and changes in market conditions and management
strategies, among other factors. Derivative financial instruments and other
financial instruments used for purposes other than trading are included in these
analyses. The measurement of risk exposure at year-end 1999 for a
200-basis-point decline in short-term interest rates identified approximately
$52 million, or 3 percent, of net interest income at risk during 2000. If
short-term interest rates rise 200 basis points, net interest income at risk
during 2000 would be approximately $30 million, or 2 percent. Corresponding
measurements of risk exposure at year-end 1998 were $72 million of net interest
income at risk for a 200-basis-point decline in interest rates and a net
interest benefit of $49 million for a 200-basis-point rise in interest rates.
Corporate policy limits adverse change to no more than 5 percent of management's
most likely net interest income forecast. The Corporation is within the policy
guideline.

Most assets and liabilities reprice either at maturity or in accordance with
their contractual terms. However, several balance sheet components demonstrate
characteristics that require adjustments to more accurately reflect repricing
and cash flow behavior. Assumptions based on historical pricing relationships
and anticipated market reactions are made to certain core deposit categories to
reflect the elasticity of the changes in the related interest rates relative to
changes in market interest rates. In addition, estimates are made concerning
early loan and security repayments. Prepayment assumptions are based on the
expertise of portfolio managers along with input from financial markets.
Consideration is given to current and future interest rate levels. While
management recognizes the limited ability of a traditional gap schedule to
accurately portray interest rate risk, adjustments are made to provide a more
accurate picture of the Corporation's interest rate risk profile. This
additional interest rate risk measurement tool provides a directional outlook on
the impact of changes in interest rates.

Interest rate sensitivity is measured as a percentage of earning assets. The
operating range for interest rate sensitivity, on an elasticity-adjusted basis,
is between an asset sensitive position of 10 percent of earning assets and a
liability sensitive position of 10 percent of earning assets.

Table 12 on page 36 shows the interest sensitivity gap as of year-end 1999 and
1998. The report reflects the contractual repricing and payment schedules of
assets and liabilities, including an estimate of all early loan and security
repayments which adds $605 million of rate sensitivity to the 1999 year-end
gap. In addition, the schedule includes an adjustment for the price elasticity
on certain core deposits.

The Corporation was slightly asset sensitive throughout most of 1999. The
Corporation had a one-year asset sensitive gap of $487 million, or 1 percent of
earning assets, as of December 31, 1999. This compares to a $2,111 million asset
sensitive gap, or 6 percent of earning assets, on December 31, 1998. Management
anticipates continued growth in asset sensitivity throughout 2000, and will
analyze both on- and off-balance sheet alternatives to hedge this increased
asset sensitivity and achieve the desired interest rate risk profile for the
Corporation.

The Corporation utilizes interest rate swaps predominantly as asset and
liability management tools with the overall objective of dampening adverse
impacts to net interest income from changes in interest rates. To accomplish
this objective, the Corporation uses interest rate swaps primarily to modify the
interest rate characteristics of certain assets and liabilities (e.g., from a
floating rate to a fixed rate, a fixed rate to a floating rate, or from one
floating rate index to another). This strategy assists management in achieving
interest rate risk objectives.

<PAGE>   17
36     COMERICA INCORPORATED 1999 ANNUAL REPORT

TABLE 12: SCHEDULE OF RATE SENSITIVE ASSETS AND LIABILITIES
<TABLE>
<CAPTION>


                                        December 31, 1999                December 31, 1998
                                   Interest Sensitivity Period      Interest Sensitivity Period
- --------------------------------------------------------------------------------------------------
                                    Within     Over                 Within       Over
(dollar amounts in millions)       One Year  One Year    Total     One Year    One Year    Total
- --------------------------------------------------------------------------------------------------
<S>                              <C>        <C>        <C>        <C>         <C>        <C>
ASSETS
Cash and due from banks           $    --    $ 1,202    $ 1,202    $    --     $ 1,773    $ 1,773
Short-term investments                612          1        613        103           7        110
Investment securities                 843      1,896      2,739        881       1,831      2,712

Commercial loans
   (including lease financing)     19,573      1,843     21,416     17,555       2,178     19,733
International loans                 2,523         50      2,573      2,713          --      2,713
Real estate related loans           4,502      2,851      7,353      3,856       2,441      6,297
Consumer loans                        858        493      1,351      1,044         818      1,862
- --------------------------------------------------------------------------------------------------
      Total loans                  27,456      5,237     32,693     25,168       5,437     30,605

Other assets                          647        759      1,406        618         783      1,401
- --------------------------------------------------------------------------------------------------
      Total assets                $29,558    $ 9,095    $38,653    $26,770     $ 9,831    $36,601
==================================================================================================
LIABILITIES
Deposits
   Noninterest-bearing            $   959    $ 5,177    $ 6,136    $ 1,451     $ 5,548    $ 6,999
   Savings                             --      1,420      1,420         --       1,533      1,533
   Money market and NOW             5,966      1,845      7,811      5,991       1,901      7,892
   Certificates of deposit          5,546      1,031      6,577      5,275       1,232      6,507
   Foreign office                   1,347         --      1,347      1,382          --      1,382
- --------------------------------------------------------------------------------------------------
      Total deposits               13,818      9,473     23,291     14,099      10,214     24,313

Short-term borrowings               2,768         --      2,768      3,580          --      3,580
Medium- and long-term debt          7,269      1,311      8,580      3,771       1,511      5,282
Other liabilities                     224        315        539         64         315        379
- --------------------------------------------------------------------------------------------------
      Total liabilities            24,079     11,099     35,178     21,514      12,040     33,554

Shareholders' equity                  (31)     3,506      3,475         (8)      3,055      3,047
- --------------------------------------------------------------------------------------------------
      Total liabilities and
        shareholders' equity      $24,048    $14,605    $38,653    $21,506     $15,095    $36,601
==================================================================================================
Sensitivity impact of interest
   rate swaps                      (7,409)     7,409         --     (5,549)      5,549         --
- --------------------------------------------------------------------------------------------------
Interest sensitivity gap           (1,899)     1,899         --       (285)        285         --
Gap as a percentage of earning
   assets                              (5)%        5%        --         (1)%         1%        --
Sensitivity impact from
   elasticity adjustments (1)       2,386     (2,386)        --      2,396      (2,396)        --
- --------------------------------------------------------------------------------------------------
Interest sensitivity gap with
   elasticity adjustments (1)     $   487    $  (487)        --    $ 2,111     $(2,111)        --
Gap as a percentage of earning
   assets                               1%        (1)%       --          6%         (6)%       --
==================================================================================================
</TABLE>


(1) Elasticity adjustments for NOW, savings and money market deposit accounts
    are based on historical pricing relationships dating back to 1985 as well as
    expected future pricing relationships.



<PAGE>   18
                               COMERICA INCORPORATED 1999 ANNUAL REPORT       37

TABLE 13: REMAINING EXPECTED MATURITY OF RISK MANAGEMENT INTEREST RATE SWAPS

<TABLE>
<CAPTION>

                                                                                      2005-                    Dec. 31
(dollar amounts in millions)    2000      2001      2002        2003       2004       2026        Total           1998
- ----------------------------------------------------------------------------------------------------------------------
<S>                          <C>        <C>        <C>        <C>         <C>       <C>          <C>          <C>
VARIABLE RATE ASSET
DESIGNATION:
 Receive fixed swaps
   Generic                    $  700     $3,250     $2,850     $   --      $   --    $   --       $6,800       $3,950
   Index amortizing              149         --         --         --          --        --          149        2,169

 Weighted average:(1)
   Receive rate                 6.34%      5.68%      7.14%        --%         --%       --%        6.36%        6.01%
   Pay rate                     6.18%      6.15%      7.50%        --%         --%       --%        6.71%        5.30%
- ----------------------------------------------------------------------------------------------------------------------
FIXED RATE ASSET
DESIGNATION:
  Pay fixed swaps
    Generic                   $   13     $   --     $   --     $   --      $   --    $   --       $   13       $    2
    Index amortizing               7         --         --         --          --        --            7           11
    Amortizing                    --         --          2         --          --        --            2           --

  Weighted average:(1)
    Receive rate                6.48%        --%      5.09%        --%         --%       --%        6.37%        5.54%
    Pay rate                    5.92%        --%      6.05%        --%         --%       --%        5.93%        5.88%
- ----------------------------------------------------------------------------------------------------------------------
FIXED RATE DEPOSIT
DESIGNATION:
  Generic receive fixed swaps $   10     $   --     $   --     $   --      $   --    $   --       $   10       $   --

  Weighted average:(3)
    Receive rate                5.16%        --%        --%        --%         --%       --%        5.16%          --%
    Pay rate                    5.01%        --%        --%        --%         --%       --%        5.01%          --%
- ----------------------------------------------------------------------------------------------------------------------
MEDIUM- AND LONG-TERM
DEBT DESIGNATION:
  Generic receive fixed swaps $  200     $   --     $  150     $   --      $   --    $1,150       $1,500       $  700

  Weighted average:(1)
    Receive rate                6.91%        --%      7.37%        --%         --%     6.79%        6.86%        7.33%
    Pay rate                    6.11%        --%      6.09%        --%         --%     5.90%        5.95%        5.28%

  Floating/floating swaps     $   37     $   --     $   --     $   --      $   --    $   --       $   37       $   37

  Weighted average:(2)
    Receive rate                5.93%        --%        --%        --%         --%       --%        5.93%        4.98%
    Pay rate                    6.19%        --%        --%        --%         --%       --%        6.19%        5.19%
- ----------------------------------------------------------------------------------------------------------------------
Total notional amount         $1,116     $3,250     $3,002     $   --      $   --    $1,150       $8,518       $6,869
======================================================================================================================
</TABLE>

(1) Variable rates paid on receive fixed swaps are based on one-month and
    three-month LIBOR rates in effect at December 31, 1999. Variable rates
    received on pay fixed swaps are based on prime.
(2) Variable rates paid are based on LIBOR at December 31, 1999, while variable
    rates received are based on the two-year Constant Treasury Maturity Rate.
(3) Variable rate paid is based on one-month CDOR at December 31, 1999.

<PAGE>   19

38     COMERICA INCORPORATED 1999 ANNUAL REPORT

RISK MANAGEMENT DERIVATIVE FINANCIAL INSTRUMENTS AND
FOREIGN EXCHANGE CONTRACTS

RISK MANAGEMENT NOTIONAL ACTIVITY

<TABLE>
<CAPTION>
                                      Interest        Foreign
                                          Rate       Exchange
(in millions)                        Contracts      Contracts              Totals
- -----------------------------------------------------------------------------------
<S>                                 <C>            <C>                 <C>
Balances at December 31, 1997        $  8,567       $    599            $  9,166
Additions                               3,402          7,218              10,620
Maturities/amortizations               (4,330)        (6,904)            (11,234)
Terminations                             (755)            --                (755)
- --------------------------------------------------------------------------------
Balances at December 31, 1998        $  6,884       $    913            $  7,797
Additions                               3,677         10,491              14,168
Maturities/amortizations                 (667)       (10,191)            (10,858)
Terminations                           (1,376)            --              (1,376)
- --------------------------------------------------------------------------------
Balances at December 31, 1999        $  8,518       $  1,213            $  9,731
================================================================================
</TABLE>

The notional amount of risk management interest rate swaps totaled $8,518
million at December 31, 1999, and $6,869 million at December 31, 1998. The fair
value of risk management interest rate swaps at December 31, 1999, was a
negative $155 million, compared to a positive $146 million at December 31, 1998.
For the year ended December 31, 1999, risk management interest rate swaps
generated $54 million in net interest income, compared to $46 million in net
interest income for the year ended December 31, 1998. These off-balance sheet
instruments represented 78 percent of total derivative financial instruments and
foreign exchange contracts, including commitments to purchase and sell
investment securities, at year-end 1999 and 75 percent at year-end 1998.

Table 13 on page 37 summarizes the expected maturity distribution of the
notional amount of risk management interest rate swaps and provides the weighted
average interest rates associated with amounts to be received or paid as of
December 31, 1999. The swaps have been grouped by the assets and liabilities to
which they have been designated.

In addition to interest rate swaps, the Corporation employs various other types
of off-balance sheet derivative and foreign exchange contracts to mitigate
exposures to interest rate and foreign currency risks associated with specific
assets and liabilities (e.g., loans or deposits denominated in foreign
currencies and mortgages held for sale). Such instruments include interest rate
caps and floors, purchased put options, foreign exchange forward contracts,
foreign exchange generic swap agreements and cross-currency swaps. The aggregate
notional amounts of these risk management derivative and foreign exchange
contracts at December 31, 1999 and 1998, were $1,213 million and $928 million,
respectively.

Further information regarding risk management financial instruments and foreign
currency exchange contracts is provided in Notes 1, 9, 18, and 25.

CUSTOMER-INITIATED AND OTHER DERIVATIVE FINANCIAL
INSTRUMENTS AND FOREIGN EXCHANGE CONTRACTS

CUSTOMER-INITIATED AND OTHER NOTIONAL ACTIVITY
<TABLE>
<CAPTION>

                                       Interest       Foreign
                                           Rate      Exchange
(in millions)                         Contracts     Contracts    Totals
- --------------------------------------------------------------------------------
<S>                                  <C>          <C>          <C>
Balances at December 31, 1997          $ 496       $  1,837     $  2,333
Additions                                417         36,171       36,588
Maturities/amortizations                (232)       (37,335)     (37,567)
- ------------------------------------------------------------------------
Balances at December 31, 1998          $ 681       $    673     $  1,354
Additions                                133         31,004       31,137
Maturities/amortizations                (251)       (31,098)     (31,349)
- ------------------------------------------------------------------------
Balances at December 31, 1999          $ 563       $    579     $  1,142
========================================================================
</TABLE>

On a limited basis, the Corporation writes interest rate caps and enters into
foreign exchange contracts and interest rate swaps to accommodate the needs of
customers requesting such services. At December 31, 1999 and 1998, customer-
initiated activity represented 10 percent and 15 percent, respectively, of total
derivative and foreign exchange contracts, including commitments to purchase and
sell securities. Refer to Note 18 on page 55 for further information regarding
customer-initiated and other derivative financial instruments and foreign
exchange contracts.

LIQUIDITY RISK
Liquidity is the ability to meet financial obligations through the maturity or
sale of existing assets or acquisition of additional funds. Liquidity
requirements are satisfied with various funding sources, including a $7.5
billion medium-term note program which allows the Michigan, California and Texas
banks to issue debt with maturities between one month and 15 years. The Michigan
bank has an additional $2 billion European note program. At year-end
1999, unissued debt related to the two programs totaled $2.3 billion. In
addition, liquid assets totaled $4.1 billion at December 31, 1999. The
Corporation also had available $20.4 billion from a collateralized borrowing
account with the Federal Reserve Bank at year-end 1999. Purchased funds at
December 31, 1999, excluding certificates of deposit with maturities beyond one
year and medium- and long-term debt, approximated $6.5 billion.

The parent company had available a $250 million commercial paper facility at
December 31, 1999, $175 million of which was unused. Another source of liquidity
for the parent company is dividends from its subsidiaries. As discussed in Note
17 on page 54, subsidiary banks are subject to regulation and may be limited in
their ability to pay dividends or transfer funds to the holding company. During
2000, the subsidiary banks can pay dividends up to $879 million plus current net
profits without prior regulatory approval. One measure of current parent company
liquidity is investment in subsidiaries as a percent of shareholders' equity. An
amount over 100 percent represents the reliance on subsidiary dividends to repay
liabilities. As of December 31, 1999, the ratio was 106 percent.

<PAGE>   20

                                 COMERICA INCORPORATED 1999 ANNUAL REPORT     39

OPERATIONAL RISK

Operational risk is the risk of unexpected losses attributable to human
error, system failures, fraud, unauthorized transactions and inadequate internal
controls and procedures. The Corporation mitigates this risk through a system of
internal controls that are designed to keep operating risks at appropriate
levels. The Corporation's internal audit and financial staff monitors and
assesses the overall effectiveness of the system of internal controls on an
ongoing basis and internal audit provides an opinion on the environment to
management and the Audit Committee. Operational losses are experienced by all
companies and are routinely incurred in business operations.

Comerica has established an Operational Risk Committee comprised of executives
from several disciplines. This group is charged with surfacing significant
operational risks which may impact customer service, reputation or result in
financial loss if not adequately addressed.

The internal audit staff independently supports an active Audit Committee
oversight process. The Audit Committee serves as an independent extension of the
Board of Directors. Routine and special meetings are scheduled periodically to
provide more detail on relevant operational risks.

OTHER MATTERS

The Corporation initiated an extensive enterprise-wide and centrally managed
project to prepare its computer systems, applications and infrastructure for
year 2000 readiness. The year 2000 team included the active involvement of
senior executives as well as seasoned project managers and business unit
liaisons from throughout the Corporation. To date, the Corporation has
experienced no known significant system, supplier or customer failures
attributable to the year 2000 date change. The cost of the Corporation's year
2000 project includes internal and external development costs, asset impairment
write-offs and the cost of software and hardware for systems that were not ready
or would not have been ready by the year 2000. The year 2000 project cost, both
internal and external, will total approximately $50 million, of which the
Corporation incurred approximately $48 million through December 31, 1999. The
remaining year 2000 costs yet to be incurred relate to retention incentives for
key year 2000 program employees. Of the $48 million incurred to date, $12
million was for capital assets which the Corporation is expensing over their
useful lives. The project was staffed with external resources as well as
internal staff redeployed from less time-sensitive assignments. The redeployment
of existing staff did not have a material adverse effect on the Corporation's
business, results of operations or financial position.

This annual report to shareholders includes forward-looking statements based on
management's current expectations and/or the assumptions made in the earnings
simulation analyses, but numerous factors could cause variances in these
projections and their underlying assumptions, such as interest rate
changes, changes in industries where the Corporation has a concentration of
loans, changes in the level of fee income, changing economic conditions and
continuing consolidations in the banking industry.

<PAGE>   21

40     COMERICA INCORPORATED 1999 ANNUAL REPORT

CONSOLIDATED BALANCE SHEETS
COMERICA INCORPORATED AND SUBSIDIARIES

<TABLE>
<CAPTION>
December 31
(in thousands, except share data)                1999           1998
- ------------------------------------------------------------------------
<S>                                         <C>             <C>
ASSETS
Cash and due from banks                      $ 1,201,990     $ 1,773,100
Short-term investments                           612,959         109,640
Investment securities available for sale       2,739,464       2,712,165
Commercial loans                              20,654,658      19,086,541
International loans                            2,573,003       2,713,259
Real estate construction loans                 1,709,261       1,079,614
Commercial mortgage loans                      4,774,052       4,179,271
Residential mortgage loans                       870,029       1,037,941
Consumer loans                                 1,350,725       1,861,630
Lease financing                                  761,550         646,607
- ------------------------------------------------------------------------
     Total loans                              32,693,278      30,604,863

Less allowance for credit losses                (476,470)       (452,409)
- ------------------------------------------------------------------------
     Net loans                                32,216,808      30,152,454

Premises and equipment                           330,728         352,650
Customers' liability on acceptances
   outstanding                                    43,810          12,335
Accrued income and other assets                1,507,573       1,488,487
- ------------------------------------------------------------------------
     Total assets                            $38,653,332     $36,600,831
========================================================================
LIABILITIES AND SHAREHOLDERS' EQUITY

Noninterest-bearing deposits                 $ 6,136,038     $ 6,999,337
Interest-bearing deposits                     17,155,365      17,313,796
- ------------------------------------------------------------------------
     Total deposits                           23,291,403      24,313,133

Federal funds purchased and securities
   sold under agreements to repurchase         1,332,397       3,108,985
Other borrowed funds                           1,435,634         471,168
Acceptances outstanding                           43,810          12,335
Accrued expenses and other liabilities           495,587         366,338
Medium- and long-term debt                     8,579,857       5,282,259
- ------------------------------------------------------------------------
     Total liabilities                        35,178,688      33,554,218

Nonredeemable preferred stock--$50 stated
   value
   Authorized--5,000,000 shares
   Issued--5,000,000 shares in 1999 and 1998     250,000         250,000
Common stock--$5 par value
   Authorized--325,000,000 shares
   Issued--157,233,107 shares in 1999 and
     157,233,088 shares in 1998                  786,166         786,165
Capital surplus                                   35,092          24,649
Accumulated nonowner changes in equity           (31,702)         (6,455)
Retained earnings                              2,485,204       2,086,589
Deferred compensation                             (2,955)         (5,202)
Less cost of common stock in treasury--
     715,496 shares in 1999 and 1,351,997
     shares in 1998                              (47,161)        (89,133)
- ------------------------------------------------------------------------
     Total shareholders' equity                3,474,644       3,046,613
- ------------------------------------------------------------------------
           Total liabilities and
             shareholders' equity            $38,653,332     $36,600,831
========================================================================
</TABLE>

See notes to consolidated financial statements.

<PAGE>   22
                                 COMERICA INCORPORATED 1999 ANNUAL REPORT     41

CONSOLIDATED STATEMENTS OF INCOME
COMERICA INCORPORATED AND SUBSIDIARIES

<TABLE>
<CAPTION>

Year Ended December 31
(in thousands,except per share data)                                    1999               1998               1997
- ---------------------------------------------------------------------------------------------------------------------
<S>                                                                <C>                <C>                <C>
INTEREST INCOME
Interest and fees on loans                                          $ 2,500,978        $ 2,382,329        $ 2,317,844
Interest on investment securities
   Taxable                                                              156,933            218,378            310,399
   Exempt from federal income tax                                         4,647              7,252             10,797
- ---------------------------------------------------------------------------------------------------------------------
          Total interest on investment securities                       161,580            225,630            321,196

Interest on short-term investments                                       10,152              8,815              8,363
- ---------------------------------------------------------------------------------------------------------------------
          Total interest income                                       2,672,710          2,616,774          2,647,403

INTEREST EXPENSE

Interest on deposits                                                    590,335            647,825            673,265
Interest on short-term borrowings                                       179,133            185,711            209,010
Interest on medium- and long-term debt                                  410,367            367,777            374,022
Net interest rate swap income                                           (54,266)           (45,810)           (51,670)
- ---------------------------------------------------------------------------------------------------------------------
Total interest expense                                                1,125,569          1,155,503          1,204,627
- ---------------------------------------------------------------------------------------------------------------------
          Net interest income                                         1,547,141          1,461,271          1,442,776
Provision for credit losses                                             114,000            113,000            146,000
- ---------------------------------------------------------------------------------------------------------------------
          Net interest income after provision for credit losses       1,433,141          1,348,271          1,296,776

NONINTEREST INCOME

Fiduciary and investment management income                              240,574            184,354            147,336
Service charges on deposit accounts                                     169,173            157,416            141,078
Commercial lending fees                                                  48,887             43,326             31,342
Letter of credit fees                                                    38,468             31,127             26,047
Securities gains                                                          5,453              6,116              5,195
Other noninterest income                                                214,333            180,809            176,954
- ---------------------------------------------------------------------------------------------------------------------
          Total noninterest income                                      716,888            603,148            527,952

NONINTEREST EXPENSES
Salaries and employee benefits                                          640,357            565,303            538,926
Net occupancy expense                                                    93,728             89,911             89,380
Equipment expense                                                        61,092             60,147             61,759
Outside processing fee expense                                           47,754             42,785             41,683
Restructuring charge                                                         --             (6,840)                --
Other noninterest expenses                                              274,026            268,738            276,238
- ---------------------------------------------------------------------------------------------------------------------
     Total noninterest expenses                                       1,116,957          1,020,044          1,007,986
- ---------------------------------------------------------------------------------------------------------------------
Income before income taxes                                            1,033,072            931,375            816,742
Provision for income taxes                                              360,483            324,299            286,266
- ---------------------------------------------------------------------------------------------------------------------
Net Income                                                          $   672,589        $   607,076        $   530,476
=====================================================================================================================
Net income applicable to common stock                               $   655,489        $   589,976        $   513,376
=====================================================================================================================
Basic net income per common share                                   $      4.20        $      3.79        $      3.24
Diluted net income per common share                                        4.14               3.72               3.19

Cash dividends declared on common stock                             $   224,837        $   199,403        $   181,272
Dividends per common share                                          $      1.44        $      1.28        $      1.15
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>

See notes to consolidated financial statements.

<PAGE>   23

42     COMERICA INCORPORATED 1999 ANNUAL REPORT

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
COMERICA INCORPORATED AND SUBSIDIARIES

<TABLE>
<CAPTION>

                                             Non-                               Accumulated
                                          redeemable                              Nonowner
                                           Preferred     Common       Capital      Changes       Retained       Deferred
(in thousands,except share data)             Stock        Stock       Surplus     In Equity      Earnings     Compensation
- --------------------------------------------------------------------------------------------------------------------------
<S>                                      <C>            <C>          <C>       <C>             <C>           <C>
BALANCES AT
JANUARY 1, 1997                             $250,000     $536,487     $    --    $ (22,789)     $1,854,116     $(2,245)

Net income for 1997                               --           --          --           --         530,476          --
Nonowner changes in equity,net of tax             --           --          --       20,852              --          --
Net income and nonowner changes in equity         --           --          --           --              --          --

Cash dividends declared:
   Preferred stock                                --           --          --           --         (17,100)         --
   Common stock                                   --           --          --           --        (181,272)         --
Purchase and retirement of 3,618,479
   shares of common stock                         --      (18,092)    (30,750)          --        (193,451)         --
Issuance of common stock under
   employee stock plans                           --        4,323      30,750           --               9        (531)
Amortization of deferred compensation             --           --          --           --              --         993
Stock split (three-for-two)                       --      261,359          --           --        (261,359)         --
- --------------------------------------------------------------------------------------------------------------------------
BALANCES AT
DECEMBER 31, 1997                            250,000      784,077          --       (1,937)      1,731,419     (1,783)

Net income for 1998                               --           --          --           --         607,076         --
Nonowner changes in equity,net of tax             --           --          --       (4,518)             --         --
Net income and nonowner changes in equity         --           --          --           --              --         --

Cash dividends declared:
   Preferred stock                                --           --          --           --         (17,100)        --
   Common stock                                   --           --          --           --        (199,403)        --
Purchase and retirement of 60,000
   shares of common stock                         --         (300)     (3,182)          --              --         --
Purchase of 2,199,650 shares
   of common stock                                --           --          --           --              --         --
Issuance of common stock under
   employee stock plans                           --        2,388      27,831           --         (35,403)    (4,604)
Amortization of deferred compensation             --           --          --           --              --      1,185
- --------------------------------------------------------------------------------------------------------------------------
BALANCES AT
DECEMBER 31, 1998                            250,000      786,165      24,649      (6,455)       2,086,589     (5,202)

Net income for 1999                               --           --          --          --          672,589         --
Nonowner changes in equity,net of tax             --           --          --     (25,247)              --         --
Net income and nonowner changes in equity         --           --          --          --               --         --

Cash dividends declared:
   Preferred stock                                --           --          --          --          (17,100)        --
   Common stock                                   --           --          --          --         (224,837)        --
Purchase of 44,082 shares
   of common stock                                --           --          --          --               --         --
Issuance of common stock under
   employee stock plans                           --            1      10,443          --          (32,037)         4
Amortization of deferred compensation             --           --          --          --               --      2,243
- --------------------------------------------------------------------------------------------------------------------------
BALANCES AT
DECEMBER 31, 1999                           $250,000     $786,166     $35,092    $(31,702)     $ 2,485,204    $(2,955)
==========================================================================================================================

<CAPTION>

                                                            Total
                                              Treasury   Shareholders'
                                                Stock       Equity
- --------------------------------------------------------------------------------
<S>                                          <C>         <C>
BALANCES AT
JANUARY 1, 1997                                 $      --   $2,615,569

Net income for 1997                                    --      530,476
Nonowner changes in equity,net of tax                  --       20,852
                                                            ----------
Net income and nonowner changes in equity              --      551,328

Cash dividends declared:
   Preferred stock                                     --      (17,100)
   Common stock                                        --     (181,272)
Purchase and retirement of 3,618,479
   shares of common stock                              --     (242,293)
Issuance of common stock under
   employee stock plans                                --       34,551
Amortization of deferred compensation                  --          993
Stock split (three-for-two)                            --           --
- --------------------------------------------------------------------------------
BALANCES AT
DECEMBER 31, 1997                                      --    2,761,776

Net income for 1998                                    --      607,076
Nonowner changes in equity,net of tax                  --       (4,518)
                                                            ----------
Net income and nonowner changes in equity              --      602,558

Cash dividends declared:
   Preferred stock                                     --      (17,100)
   Common stock                                        --     (199,403)
Purchase and retirement of 60,000
   shares of common stock                              --       (3,482)
Purchase of 2,199,650 shares
   of common stock                               (145,202)    (145,202)
Issuance of common stock under
   employee stock plans                            56,069       46,281
Amortization of deferred compensation                  --        1,185
- --------------------------------------------------------------------------------
BALANCES AT
DECEMBER 31, 1998                                 (89,133)   3,046,613

Net income for 1999                                    --      672,589
Nonowner changes in equity,net of tax                  --      (25,247)
                                                            ----------
Net income and nonowner changes in equity              --      647,342

Cash dividends declared:
   Preferred stock                                     --      (17,100)
   Common stock                                        --     (224,837)
Purchase of 44,082 shares
   of common stock                                 (2,885)      (2,885)
Issuance of common stock under
   employee stock plans                            44,857       23,268
Amortization of deferred compensation                  --        2,243
- --------------------------------------------------------------------------------
BALANCES AT
DECEMBER 31, 1999                               $ (47,161)  $3,474,644
================================================================================
</TABLE>

( ) Indicates deduction.

See notes to consolidated financial statements.

<PAGE>   24
                                COMERICA INCORPORATED 1999 ANNUAL REPORT      43

CONSOLIDATED STATEMENTS OF CASH FLOWS
COMERICA INCORPORATED AND SUBSIDIARIES
<TABLE>
<CAPTION>

Year Ended December 31
(in thousands)                                                                       1999           1998          1997
- --------------------------------------------------------------------------------------------------------------------------
<S>                                                                            <C>              <C>          <C>
OPERATING ACTIVITIES
Net income                                                                      $  672,589       $  607,076   $   530,476
Adjustments to reconcile net income to
   net cash provided by operating activities
     Provision for credit losses                                                   114,000          113,000       146,000
     Depreciation                                                                   56,893           57,633        58,529
     Restructuring charge                                                               --          (21,923)      (61,237)
     Net (increase) decrease in trading account securities                         (10,063)           2,796        (3,093)
     Net (increase) decrease in loans  held for sale                                36,371           (5,236)       (2,666)
     Net (increase) decrease in accrued income receivable                          (44,716)          19,487       (23,730)
     Net increase in accrued expenses                                              138,459            2,973        54,330
     Net amortization of intangibles                                                33,921           30,414        28,375
     Other,net                                                                      39,096         (116,295)     (134,982)
- --------------------------------------------------------------------------------------------------------------------------
       Total adjustments                                                           363,961           82,849        61,526
- --------------------------------------------------------------------------------------------------------------------------
       Net cash provided by operating activities                                 1,036,550          689,925       592,002

INVESTING ACTIVITIES
Net (increase) decrease in interest-bearing deposits with banks                     (9,418)          (1,184)       24,010
Net (increase) decrease in federal funds sold and securities
   purchased under agreements to resell                                            (25,094)          96,941      (117,601)
Proceeds from sale of investment securities available for sale                     335,611          111,511       238,506
Proceeds from maturity of investment securities available for sale                 724,555        1,209,291     1,456,447
Purchases of investment securities available for sale                           (1,175,726)        (126,239)     (924,509)
Net increase in loans (other than loans purchased)                              (2,671,100)      (3,768,220)   (2,615,226)
Purchase of loans                                                                       --           (1,115)     (162,128)
Fixed assets, net                                                                  (34,971)         (35,609)      (31,023)
Net (increase) decrease in customers' liability on acceptances outstanding         (31,475)           6,057        14,710
Proceeds from sale of consumer businesses                                               --        1,878,907            --
- --------------------------------------------------------------------------------------------------------------------------
       Net cash used in investing activities                                    (2,887,618)        (629,660)   (2,116,814)

FINANCING ACTIVITIES
Net increase (decrease) in deposits                                             (1,021,730)       1,726,816       219,144
Net increase (decrease) in short-term borrowings                                  (812,122)         387,252    (1,296,290)
Net increase (decrease) in acceptances outstanding                                  31,475           (6,057)      (14,710)
Proceeds from issuance of medium- and long-term debt                             6,275,000        3,200,000     5,600,000
Repayments and purchases of medium- and long-term debt                          (2,977,402)      (5,212,498)   (2,555,382)
Proceeds from issuance of common stock                                              23,268           50,885        35,082
Purchase of common stock for treasury and retirement                                (2,885)        (148,684)     (242,293)
Dividends paid                                                                    (235,646)        (211,966)     (195,412)
- --------------------------------------------------------------------------------------------------------------------------
       Net cash provided by (used in) financing activities                       1,279,958         (214,252)    1,550,139
- --------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) in cash and due from banks                                (571,110)        (153,987)       25,327
Cash and due from banks at beginning of year                                     1,773,100        1,927,087     1,901,760
- --------------------------------------------------------------------------------------------------------------------------
Cash and due from banks at end of year                                          $1,201,990       $1,773,100   $ 1,927,087
==========================================================================================================================

Interest paid                                                                   $1,101,993       $1,188,599   $ 1,161,812
==========================================================================================================================
Income taxes paid                                                                $  266,835      $  256,880   $   266,428
==========================================================================================================================

Noncash investing and financing activities
   Transfer from loans to loans held for sale                                    $  492,746      $       --   $        --
   Loan transfers to other real estate                                               11,036           5,084         7,076
==========================================================================================================================
</TABLE>

See notes to consolidated financial statements.

<PAGE>   25

44     COMERICA INCORPORATED 1999 ANNUAL REPORT

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
COMERICA INCORPORATED AND SUBSIDIARIES

(1)    ACCOUNTING POLICIES

ORGANIZATION
Comerica Incorporated is a registered bank holding company headquartered in
Detroit, Michigan. The Corporation's principal lines of business are the
Business Bank,the Individual Bank and the Investment Bank. The core businesses
are tailored to each of the Corporation's four primary geographic markets:
Michigan, Texas, California and Florida.

The accounting and reporting policies of Comerica Incorporated and its
subsidiaries conform to generally accepted accounting principles and prevailing
practices within the banking industry. Management makes estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying footnotes. Actual results could differ from these estimates.

The following is a summary of the more significant accounting and reporting
policies.

CONSOLIDATION
The consolidated financial statements include the accounts of the Corporation
and its subsidiaries after elimination of all significant intercompany accounts
and transactions. Prior years' financial statements are reclassified to conform
with current financial statement presentation.

For acquisitions accounted for as pooling-of-interests combinations the
historical consolidated financial statements are restated to include the
accounts and results of operations. For acquisitions using the purchase method
of accounting, the assets acquired and liabilities assumed are adjusted to fair
market values at the date of acquisition,and the resulting net discount or
premium is accreted or amortized into income over the remaining lives of the
relevant assets and liabilities. Goodwill representing the excess of cost over
the net book value of identifiable assets acquired is amortized on a
straight line basis over periods ranging from 10 to 30 years (weighted average
of 19 years). Core deposit intangible assets are amortized on an accelerated
method over 10 years.

The Corporation periodically evaluates long-lived assets, certain identifiable
intangibles and goodwill for indication of impairment in value.

LOANS HELD FOR SALE
Loans held for sale,normally mortgages,are carried at the lower of cost or
market. Market value is determined in the aggregate.

SECURITIES
Investment securities held to maturity are those securities which management has
the ability and positive intent to hold to maturity. Investment securities held
to maturity are stated at cost, adjusted for amortization of premium and
accretion of discount.

Investment securities that fail to meet the ability and positive intent
criteria are accounted for as securities available for sale, and stated at fair
value with unrealized gains and losses, net of income taxes, reported as a
component of shareholders' equity.

Trading account securities are carried at market value. Realized and unrealized
gains or losses on trading securities are included in noninterest income.

Gains or losses on the sale of securities are computed based on the adjusted
cost of the specific security.

PREMISES AND EQUIPMENT
Premises and equipment are stated at cost, less accumulated depreciation and
amortization. Depreciation, computed on the straight-line method, is charged to
operations over the estimated useful lives of the assets. The estimated useful
lives are generally 10-33 years for premises that the company owns and 3-8 years
for furniture and equipment. Leasehold improvements are amortized over the terms
of their respective leases or 10 years, whichever is shorter.

ALLOWANCE FOR CREDIT LOSSES
The allowance for credit losses represents management's assessment of probable
losses inherent in the Corporation's on- and off-balance sheet credit portfolio.
The allowance provides for probable losses that have been identified with
specific customer relationships and for probable losses believed to be inherent
but that have not been specifically identified. The Corporation allocates the
allowance for credit losses to each loan category based on a defined
methodology, which has been in use, without material change,for several years.
Internal risk ratings are assigned to each corporate loan at the time of
approval and are subject to subsequent periodic reviews by the senior management
of the Credit Policy Group. Corporate loans are defined as those belonging to
the commercial, international, real estate construction, commercial mortgage and
lease financing categories. A detailed credit quality review is performed
quarterly on large corporate loans which have deteriorated below certain levels
of credit risk. A specific portion of the allowance is allocated to such loans
based upon this review. The portion of the allowance allocated to the remaining
corporate loans is determined by applying projected loss ratios to each risk
rating based on numerous factors identified below. The portion of the allowance
allocated to consumer loans is determined by applying projected loss ratios to
various segments of the loan portfolio. Projected loss ratios incorporate
factors such as recent loan loss experience,current economic conditions and
trends,geographic dispersion of borrowers,and trends with respect to past due
and nonaccrual amounts.

Management maintains an unallocated allowance to recognize the uncertainty and
imprecision underlying the process of estimating expected credit losses. This
uncertainty occurs because other factors affecting the determination of probable
losses inherent in the loan portfolio may exist which are not

<PAGE>   26
                                COMERICA INCORPORATED 1999 ANNUAL REPORT      45

(1) ACCOUNTING POLICIES (CONTINUED)

necessarily captured by the application of historical loss ratios. Loans which
are deemed uncollectible are charged off and deducted from the allowance. The
provision for credit losses and recoveries on loans previously charged off are
added to the allowance.

NONPERFORMING ASSETS

Nonperforming assets are comprised of loans for which the accrual of interest
has been discontinued, loans for which the terms have been renegotiated to less
than market rates due to a serious weakening of the borrower's financial
condition and other real estate which has been acquired primarily through
foreclosure and is awaiting disposition.

Consumer loans are generally not placed on nonaccrual status and are directly
charged off no later than 180 days past due, or earlier if deemed uncollectible.
Loans other than consumer are generally placed on nonaccrual status when
principal or interest is past due 90 days or more and/or when,in the opinion of
management, full collection of principal or interest is unlikely. At the time a
loan is placed on nonaccrual status, interest previously accrued but not
collected is charged against current income. Income on such loans is then
recognized only to the extent that cash is received and where future collection
of principal is probable. Other real estate acquired is carried at the lower of
cost or fair value, minus estimated costs to sell. When the property is acquired
through foreclosure, any excess of the related loan balance over fair value is
charged to the allowance for credit losses. Subsequent write-downs, operating
expenses and losses upon sale, if any, are charged to noninterest expenses.

STOCK-BASED COMPENSATION

The Corporation elected to continue to apply Accounting Principles Board opinion
No. 25, "Accounting for Stock Issued to Employees,"and related interpretations
in measuring and recognizing compensation expense for its stock-based
compensation plans, and to disclose the pro forma effect of applying the fair
value method contained in Statement on Financial Accounting Standards (SFAS) No.
123,"Accounting for Stock-based Compensation." Information on the Corporation's
stock-based compensation plans is included in Note 13.

PENSION COSTS
Pension costs are charged to salaries and employee benefits expense and funded
consistent with the requirements of federal law and regulations.

POSTRETIREMENT BENEFITS
Postretirement benefits are recognized in the financial statements during the
employee's active service period.

DERIVATIVE FINANCIAL INSTRUMENTS AND FOREIGN EXCHANGE CONTRACTS
Interest rate and foreign exchange swaps, interest rate caps and floors, and
futures and forward contracts may be used to manage the Corporation's exposure
to interest rate and foreign currency risks. These instruments, with the
exception of futures and forwards, are accounted for on an accrual basis since
there is a high correlation with the on-balance sheet instrument being hedged.
If this correlation ceases to exist, the existing unrealized gain or loss is
amortized over the remaining term of the instrument, and future changes in fair
value are accounted for in noninterest income or expense. Net interest income or
expense, including premiums paid or received,is recognized over the life of the
contract and reported as an adjustment to interest expense. Realized gains and
losses on futures and forwards are generally deferred and amortized over the
life of the contract as an adjustment to net interest income. Gains or losses on
early termination of risk management derivative financial instruments are
deferred and amortized as an adjustment to the yields of the related assets or
liabilities over their remaining contractual life. If the designated asset or
liability matures, or is disposed of or extinguished, any unrealized gains or
losses on the related derivative instrument are recognized currently and
reported as an adjustment to interest expense.

Foreign exchange futures and forward contracts, foreign currency options,
interest rate caps and interest rate swap agreements executed as a service to
customers are accounted for on a fair value basis. As a result,the fair values
of these instruments are recorded in the consolidated balance sheet with both
realized and unrealized gains and losses recognized currently in noninterest
income.

INCOME TAXES
Provisions for income taxes are based on amounts reported in the statements of
income (after exclusion of nontaxable income such as interest on state and
municipal securities) and include deferred income taxes on temporary differences
between the tax basis and financial reporting basis of assets and liabilities.

STATEMENTS OF CASH FLOWS
For the purpose of presentation in the statements of cash flows, cash and cash
equivalents are defined as those amounts included in the balance sheet
caption,"Cash and due from banks."

LOAN ORIGINATION FEES AND COSTS
Loan origination and commitment fees are deferred and recognized over the life
of the related loan or over the commitment period as a yield adjustment. Loan
fees on unused commitments and fees related to loans sold are recognized
currently as noninterest income.

NONOWNER CHANGES IN EQUITY
Statement on Financial Accounting Standards No. 130, "Reporting Comprehensive
Income," establishes standards for the reporting and display of net income and
nonowner changes in equity and its components in a full set of general-purpose
financial statements. The Corporation has elected to present information
regarding this statement in the Consolidated Statements of Changes in
Shareholders' Equity on page 42 and in Note 11. The caption "Net income and
nonowner changes in equity," represents total comprehensive income as defined in
the statement.

<PAGE>   27
46   Comerica Incorporated 1999 Annual Report

2    ACQUISITIONS...............................................................

During 1998, Comerica obtained a majority interest in Munder Capital Management,
an investment advisory firm. Net income for the third and fourth quarter of 1998
includes the consolidated financial results of Munder. The Corporation's
minority interest in periods prior to the third quarter of 1998 was accounted
for under the equity method. Intangible assets increased $133 million as a
result of the consolidation. The fair market value of total assets acquired and
total liabilities assumed was not material.

3    INVESTMENT SECURITIES......................................................

Information concerning investment securities as shown in the consolidated
balance sheets of the Corporation was as follows:

<TABLE>
<CAPTION>
                                               Gross          Gross
                                          Unrealized     Unrealized     Estimated
(in thousands)                  Cost           Gains         Losses    Fair Value
- ---------------------------------------------------------------------------------
<S>                       <C>            <C>            <C>            <C>
December 31, 1999
  U.S. government
   and agency
     securities           $2,317,530     $    1,458     $   43,459     $2,275,529
  State and municipal
   securities                 72,054          1,764            122         73,696
  Other securities           400,260          2,580         12,601        390,239
- ---------------------------------------------------------------------------------
     Total securities
      available
       for sale           $2,789,844     $    5,802     $   56,182     $2,739,464
=================================================================================
December 31, 1998
  U.S. government
   and agency
     securities           $2,196,736     $   13,463     $    3,993     $2,206,206
  State and municipal
   securities                110,711          4,587             48        115,250
  Other securities           415,901          2,129         27,321        390,709
- ---------------------------------------------------------------------------------
     Total securities
      available
       for sale           $2,723,348     $   20,179     $   31,362     $2,712,165
=================================================================================
</TABLE>

The cost and estimated fair values of debt securities by contractual maturity
were as follows (securities with multiple maturity dates are classified in the
period of final maturity). Expected maturities will differ from contractual
maturities because borrowers may have the right to call or prepay obligations
with or without call or prepayment penalties.

<TABLE>
<CAPTION>
December 31, 1999                                     Estimated
(in thousands)                              Cost     Fair Value
- ---------------------------------------------------------------
<S>                                   <C>            <C>
Contractual maturity
     Within one year                  $  106,837     $  106,756
     Over one year to five years         204,838        204,844
     Over five years to ten years         60,063         56,965
     Over ten years                       44,717         39,227
- ---------------------------------------------------------------
          Subtotal securities            416,455        407,792

     Mortgage-backed
          securities                   2,271,352      2,229,523
     Equity and other
          nondebt securities             102,037        102,149
- ---------------------------------------------------------------
            Total securities
               available for sale     $2,789,844     $2,739,464
===============================================================
</TABLE>

Sales and calls of investment securities available for sale resulted in realized
gains and losses as follows:

<TABLE>
<CAPTION>
Year Ended December 31
(in thousands)           1999         1998
- ------------------------------------------
<S>                   <C>          <C>
Securities gains      $ 5,535      $ 7,629
Securities losses         (82)      (1,513)
- ------------------------------------------
      Total           $ 5,453      $ 6,116
==========================================
</TABLE>

Assets, principally securities, carried at approximately $1.8 billion at
December 31, 1999, were pledged to secure public deposits (including State of
Michigan deposits of $48 million at December 31, 1999) and for other purposes as
required by law.

<PAGE>   28
                               Comerica Incorporated 1999 Annual Report       47

4    NONPERFORMING ASSETS.......................................................

The following table summarizes nonperforming assets and loans which are
contractually past due 90 days or more as to interest or principal payments.
Nonperforming assets consist of nonaccrual loans, reduced-rate loans and other
real estate. Nonaccrual loans are those on which interest is not being
recognized. Reduced-rate loans are those on which interest has been renegotiated
to lower than market rates because of the weakened financial condition of the
borrower.

Nonaccrual and reduced-rate loans are included in loans on the consolidated
balance sheet.

<TABLE>
<CAPTION>
December 31
(in thousands)                                    1999         1998
- -------------------------------------------------------------------
<S>                                           <C>          <C>
Nonaccrual loans
     Commercial loans                         $110,606     $ 77,175
     International loans                        44,046       20,350
     Real estate construction loans                249          452
     Commercial mortgage loans                   9,620        6,788
     Residential mortgage loans                    572        3,468
- -------------------------------------------------------------------
          Total                                165,093      108,233

Reduced-rate loans                               7,347        7,464
- -------------------------------------------------------------------
          Total nonperforming loans            172,440      115,697

Other real estate                                9,595        4,956
- -------------------------------------------------------------------
          Total nonperforming assets          $182,035     $120,653
===================================================================
Loans past due 90 days and still accruing     $ 47,676     $ 40,209
===================================================================
Gross interest income that would
     have been recorded had the
     nonaccrual and reduced-rate
     loans performed in accordance
     with original terms                      $ 17,309     $ 13,674
===================================================================
Interest income recognized                    $  2,158     $  3,899
===================================================================
</TABLE>

A loan is impaired when it is probable that payment of interest and principal
will not be made in accordance with the contractual terms of the loan agreement.
Consistent with this definition, all nonaccrual and reduced-rate loans (with the
exception of residential mortgage and consumer loans) are impaired.

<TABLE>
<CAPTION>
December 31
(in thousands)                              1999         1998         1997
- --------------------------------------------------------------------------
<S>                                     <C>          <C>          <C>
Average impaired loans for the year     $146,070     $ 85,500     $ 73,502
Total period-end impaired loans          159,165      101,417       70,470
Period-end impaired loans
    requiring an allowance               155,828       87,494       60,376
Impairment allowance                      51,753       21,951       20,358
</TABLE>

Those impaired loans not requiring an allowance represent loans for which the
fair value exceeded the recorded investment in the loan. Twenty-four percent of
the total impaired loans at December 31, 1999, are evaluated based on fair value
of related collateral. Remaining loan impairment is based on the present value
of expected future cash flows discounted at the loan's effective interest rate.

5    ALLOWANCE FOR CREDIT LOSSES................................................

An analysis of changes in the allowance for credit losses follows:

<TABLE>
<CAPTION>
(in thousands)                          1999            1998            1997
- ----------------------------------------------------------------------------
<S>                                <C>             <C>             <C>
Balance at January 1               $ 452,409       $ 424,147       $ 367,165
Loans charged off                   (120,976)       (125,627)       (131,140)
Recoveries on loans previously
     charged off                      31,004          40,889          42,122
- ----------------------------------------------------------------------------
   Net loans charged off             (89,972)        (84,738)        (89,018)
Provision for credit losses          114,000         113,000         146,000
Foreign currency translation
     adjustment                           33            --              --
- ----------------------------------------------------------------------------
Balance at December 31             $ 476,470       $ 452,409       $ 424,147
============================================================================
As a percent of total loans             1.46%           1.48%           1.47%
============================================================================
</TABLE>
<PAGE>   29
48   Comerica Incorporated 1999 Annual Report

6    SIGNIFICANT GROUP CONCENTRATIONS OF CREDIT RISK............................

Concentrations of both on-balance sheet and off-balance sheet credit risk are
controlled and monitored as part of credit policies. The Corporation is a
regional bank holding company with a geographic concentration of its on-balance
sheet and off-balance sheet activities centered in Michigan. In addition, the
Corporation has an industry concentration with the automotive industry, which
includes manufacturers and their finance subsidiaries, suppliers, dealers and
company executives.

At December 31, 1999 and 1998, exposure from loan commitments and guarantees to
companies related to the automotive industry totaled $8.9 billion and $9.0
billion, respectively. Additionally, commercial real estate loans, including
commercial mortgages and construction loans, totaled $6.5 billion in 1999 and
$5.3 billion in 1998. Approximately $2.7 billion of commercial real estate loans
at December 31, 1999, involved mortgages on owner-occupied properties. Those
borrowers are involved in business activities other than real estate, and the
sources of repayment are not dependent on the performance of the real estate
market.

7    PREMISES AND EQUIPMENT AND OTHER NONCANCELABLE OBLIGATIONS.................

A summary of premises and equipment at December 31 by major category follows:

<TABLE>
<CAPTION>
(in thousands)                                          1999           1998
- ---------------------------------------------------------------------------
<S>                                                <C>            <C>
Land                                               $  49,464      $  49,356
Buildings and improvements                           351,458        341,260
Furniture and equipment                              320,565        327,498
- ---------------------------------------------------------------------------
     Total cost                                      721,487        718,114

Less accumulated depreciation and amortization      (390,759)      (365,464)
- ---------------------------------------------------------------------------
     Net book value                                $ 330,728      $ 352,650
===========================================================================
</TABLE>

Rental expense for leased properties and equipment amounted to $42 million in
1999 and $41 million in 1998 and 1997. Future minimum payments under
noncancelable obligations are as follows:

<TABLE>
<CAPTION>
(in thousands)
- ---------------------------
<S>                <C>
2000               $ 45,638
2001                 41,859
2002                 36,811
2003                 32,789
2004                 28,779
2005 and later      254,842
===========================
</TABLE>

8    SHORT-TERM BORROWINGS......................................................

Federal funds purchased and securities sold under agreements to repurchase
generally mature within one to four days from the transaction date. Other
borrowed funds, consisting of commercial paper, borrowed securities, term
federal funds purchased, short-term notes and treasury tax and loan deposits,
generally mature within one to 120 days from the transaction date. The following
is a summary of short-term borrowings at December 31, 1999 and 1998:

<TABLE>
<CAPTION>
                           Federal Funds Purchased
                               and Securities Sold              Other
                                  Under Agreements           Borrowed
(in thousands)                       to Repurchase              Funds
- ---------------------------------------------------------------------
<S>                                  <C>                <C>
December 31, 1999
     Amount outstanding at
       year-end                      $   1,332,397      $   1,435,634
     Weighted average
       interest rate at year-end              4.40%              4.50%

December 31, 1998
     Amount outstanding at
       year-end                      $   3,108,985      $     471,168
     Weighted average
       interest rate at year-end              4.83%              3.91%
=====================================================================
</TABLE>

At December 31, 1999, the parent company had available a $250 million commercial
paper facility of which $75 million was outstanding. This facility is supported
by a $210 million line of credit agreement. Under the current agreement the line
will expire in May of 2000.

At December 31, 1999, the Corporation's subsidiary banks had pledged loans
totaling $27.3 billion to secure a collateralized borrowing account with the
Federal Reserve Bank.

<PAGE>   30
                               Comerica Incorporated 1999 Annual Report       49

9    MEDIUM- AND LONG-TERM DEBT.................................................

Medium- and long-term debt consisted of the following at December 31:

<TABLE>
<CAPTION>
(in thousands)                                                1999           1998
- ---------------------------------------------------------------------------------
<S>                                                     <C>            <C>
Parent Company
     7.25% subordinated notes due 2007                  $  158,543     $  159,669
     9.75% subordinated notes due 1999                        --           74,970
- ---------------------------------------------------------------------------------
          Total parent company                             158,543        234,639

Subsidiaries
Subordinated notes:
     7.25% subordinated notes due 2007                     198,502        198,301
     8.375% subordinated notes due 2024                    155,287        155,502
     7.25% subordinated notes due 2002                     149,561        149,404
     6.875% subordinated notes due 2008                    103,729        104,186
     7.125% subordinated notes due 2013                    154,834        155,181
     7.875% subordinated notes due 2026                    173,217        174,086
     6.00% subordinated notes due 2008                     248,010        247,798
- ---------------------------------------------------------------------------------
          Total subordinated notes                       1,183,140      1,184,458

Medium-term notes:
     Floating rate based on LIBOR indices                5,762,320      3,612,076
     Floating rate based on Treasury indices                37,000         37,000
     Floating rate based on Prime indices                1,224,993           --
     Fixed rate notes with interest rate
        of 6.65%                                           199,944        199,810
- ---------------------------------------------------------------------------------
          Total medium-term notes                        7,224,257      3,848,886

Notes payable                                               13,917         14,276
- ---------------------------------------------------------------------------------
          Total subsidiaries                             8,421,314      5,047,620
- ---------------------------------------------------------------------------------
          Total medium- and long-term debt              $8,579,857     $5,282,259
=================================================================================
</TABLE>

Concurrent with the issuance of certain of the medium- and long-term debt
presented above,the Corporation entered into interest rate swap agreements to
convert the stated rate of the debt to a rate based on the indices identified in
the following table:

<TABLE>
<CAPTION>
                            Principal Amount                         Base
                                     of Debt                      Rate at
(in thousands)                     Converted          Base Rate  12/31/99
- -------------------------------------------------------------------------
<S>                                 <C>           <C>               <C>
Subsidiaries
Subordinated notes:
     7.25% subordinated notes       $200,000      6-month LIBOR     6.13%
     7.25% subordinated notes        150,000      6-month LIBOR     6.13%
     6.88% subordinated notes        100,000      6-month LIBOR     6.13%
     6.00% subordinated notes        250,000      6-month LIBOR     6.13%
     7.13% subordinated notes        150,000      6-month LIBOR     6.13%
     7.88% subordinated notes        150,000      6-month LIBOR     6.13%

Medium-term notes:
     Floating rate based on
        LIBOR indices                108,000      3-month LIBOR     6.00%
     Floating rate based on
        Treasury indices              37,000      3-month LIBOR     6.00%
     Fixed rate notes
        with interest rate
          of 6.65%                   200,000      3-month LIBOR     6.00%
=========================================================================
</TABLE>

All subordinated notes and debentures with maturities greater than one year
qualify as Tier 2 capital.

The Corporation currently has two medium-term note programs: a senior note
program and a European note program. Under these programs, certain bank
subsidiaries may offer an aggregate principal amount of up to $9.5 billion. The
notes can be issued as fixed or floating rate notes and with terms from one
month to 15 years. The interest rates on the floating rate medium-term notes
based on LIBOR ranged from one-month LIBOR minus 0.10% to three-month LIBOR plus
0.17%. The notes are due from 2000 to 2002. The interest rate on the floating
rate medium-term notes based on U.S. Treasury indices is equal to the two-year
Constant Treasury Maturity Rate plus 0.01%. The notes are due in 2000. The fixed
rate notes mature in 2000. The medium-term notes do not qualify as Tier 2
capital and are not insured by the FDIC. The principal maturities of medium- and
long-term debt are as follows:

<TABLE>
<CAPTION>
(in thousands)
- ------------------------------
<S>                 <C>
2000                $6,593,933
2001                   316,148
2002                   485,416
2003                     2,585
2004                     2,592
2005 and later       1,179,183
==============================
</TABLE>

10   SHAREHOLDERS' EQUITY.......................................................

The board of directors authorized the repurchase of up to 40.5 million shares of
Comerica Incorporated common stock for general corporate purposes, acquisitions
and employee benefit plans. At December 31, 1999, 20.6 million shares had been
repurchased under this program.

At December 31, 1999, the Corporation had reserved 9.7 million shares of common
stock for issuance to employees and directors under the long-term incentive
plans.

The Corporation issued 5 million shares of Fixed/Adjustable Rate Noncumulative
Preferred Stock,Series E, with a stated value of $50 per share in 1996.
Dividends are payable quarterly, at a rate of 6.84% per annum through July 1,
2001. Thereafter, the rate will be equal to 0.625% plus an effective rate, but
not less than 7.34% nor greater than 13.34%. The effective rate will be equal to
the highest of the Treasury Bill Rate, the Ten Year Constant Treasury Maturity
Rate and the Thirty Year Constant Treasury Maturity Rate (as defined in the
prospectus). The Corporation, at its option, may redeem all or part of the
outstanding shares on or after July 1, 2001.
<PAGE>   31

50   Comerica Incorporated 1999 Annual Report

11   NONOWNER CHANGES IN EQUITY.................................................

Nonowner changes in equity includes the change in unrealized gains and losses on
investment securities available for sale and the change in the accumulated
foreign currency translation adjustment. The Consolidated Statements of Changes
in Shareholders' Equity include only the combined, net of tax, nonowner changes
in equity. The following presents reconciliations of the components of
accumulated nonowner changes in equity for the years ended December 31, 1999,
1998 and 1997.

<TABLE>
<CAPTION>
                                                                                                      Year Ended December 31
- --------------------------------------------------------------------------------------------------------------------------------
(in thousands)                                                                                  1999          1998          1997
- --------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                         <C>           <C>           <C>
Net unrealized gains (losses) on investment securities available for sale:
     Balance at beginning of year                                                           $ (7,688)     $   (970)     $(22,789)
     Net unrealized holding gains (losses) arising during the period                         (33,815)       (3,835)       39,038
     Less: Reclassification adjustment for gains (losses) included in net income               5,453         6,116         5,195
- ---------- ---------------------------------------------------------------------------------------------------------------------
     Change in net unrealized gains (losses) before income taxes                             (39,268)       (9,951)       33,843
     Provision for income taxes                                                              (14,239)       (3,233)       12,024
- --------------------------------------------------------------------------------------------------------------------------------
     Change in net unrealized gains (losses) on investment securities available for sale,
          net of tax                                                                         (25,029)       (6,718)       21,819
- --------------------------------------------------------------------------------------------------------------------------------
     Balance at December 31                                                                 $(32,717)     $ (7,688)     $   (970)

- --------------------------------------------------------------------------------------------------------------------------------
Accumulated foreign currency translation adjustment:
     Balance at beginning of year                                                           $  1,233      $   (967)     $   --
     Net translation gains (losses) arising during the period                                   (218)        2,200          (967)
     Less: Reclassification adjustment for gains (losses) included in net income                --            --            --
- ---------- ---------------------------------------------------------------------------------------------------------------------
     Change in translation adjustment before income taxes                                       (218)        2,200          (967)
     Provision for income taxes                                                                 --            --            --
- --------------------------------------------------------------------------------------------------------------------------------
     Change in foreign currency translation adjustment, net of tax                              (218)        2,200          (967)
- --------------------------------------------------------------------------------------------------------------------------------
     Balance at December 31                                                                 $  1,015      $  1,233      $   (967)
- --------------------------------------------------------------------------------------------------------------------------------
Total accumulated nonowner changes in equity, net of taxes, at December 31                  $(31,702)     $ (6,455)     $ (1,937)
================================================================================================================================
</TABLE>

12   NET INCOME PER COMMON SHARE................................................

Basic net income per common share is computed by dividing net income applicable
to common stock by the weighted average number of shares of common stock
outstanding during the period. Diluted net income per common share is computed
by dividing net income applicable to common stock by the weighted average number
of shares, nonvested stock and dilutive common stock equivalents outstanding
during the period. Common stock equivalents consist of common stock issuable
under the assumed exercise of stock options granted under the Corporation's
stock plans, using the treasury stock method. A computation of earnings per
share follows:

<TABLE>
<CAPTION>
Year Ended December 31
(in thousands, except per share data)                        1999         1998         1997
- -------------------------------------------------------------------------------------------
<S>                                                      <C>          <C>          <C>
Basic
     Average shares outstanding                           156,094      155,859      158,333
===========================================================================================
Net income                                               $672,589     $607,076     $530,476
Less preferred stock dividends                             17,100       17,100       17,100
- -------------------------------------------------------------------------------------------
Net income applicable to
       common stock                                      $655,489     $589,976     $513,376
===========================================================================================
Basic net income per
       common share                                      $   4.20     $   3.79     $   3.24
===========================================================================================
Diluted
     Average shares outstanding                           156,094      155,859      158,333
     Nonvested stock                                          167          191          204
     Common stock equivalents
       Net effect of the assumed
          exercise of stock options                         2,136        2,707        2,503
- -------------------------------------------------------------------------------------------
     Diluted average shares                               158,397      158,757      161,040
===========================================================================================
Net income                                               $672,589     $607,076     $530,476
Less preferred stock dividends                             17,100       17,100       17,100
- -------------------------------------------------------------------------------------------
Net income applicable to
       common stock                                      $655,489     $589,976     $513,376
===========================================================================================
Diluted net income per
       common share                                      $   4.14     $   3.72     $   3.19
===========================================================================================
</TABLE>

<PAGE>   32
                               Comerica Incorporated 1999 Annual Report       51

13   LONG-TERM INCENTIVE PLANS..................................................

The Corporation has long-term incentive plans under which it has awarded both
shares of restricted stock to key executive officers and stock options to
executive officers, directors and key personnel of the Corporation and its
subsidiaries. The Corporation has elected to follow Accounting Principles Board
opinion No. 25, "Accounting For Stock Issued to Employees" (APB 25) and related
Interpretations in accounting for its employee and director stock options. Under
APB 25, no compensation expense is recognized because the exercise price of the
Corporation's employee and director stock options equals the market price of the
underlying stock on the date of grant. The maturity of each option is determined
at the date of grant; however, no options may be exercised later than ten years
from the date of grant. The options may have restrictions regarding
exercisability.

Pro forma information regarding net income and earnings per share is required
under SFAS No. 123, "Accounting for Stock-Based Compensation," and has been
determined as if the Corporation had accounted for its employee and director
stock options under the fair value method of that Statement. The fair value of
options was estimated at the date of grant using a Black-Scholes option pricing
model. The Black-Scholes model was developed for use in estimating the fair
value of traded options which have no vesting restrictions and are fully
transferable. In addition, option valuation models require the input of highly
subjective assumptions including the expected stock price volatility. The model
may not necessarily provide a reliable single measure of the fair value of
employee and director stock options. The Corporation's employee and director
stock options have characteristics significantly different from those of traded
options and changes in the subjective input assumptions can materially affect
the fair value estimate.

The fair value of the options was estimated using an option valuation model with
the following weighted-average assumptions:

<TABLE>
<CAPTION>
                                           1999       1998      1997
- --------------------------------------------------------------------
<S>                                       <C>        <C>        <C>
Risk-free interest rate                   5.15%      5.54%      6.49%
Expected dividend yield                   3.24%      3.45%      3.77%
Expected volatility factors of
     the market price of Comerica
     common stock                           24%        21%        20%
Expected option life (in years)             4.8        4.3        4.4
</TABLE>

For purposes of pro forma disclosures, the estimated fair value of the options
granted in 1995 and thereafter is amortized to expense over the options' vesting
period. A majority of the Corporation's options vest over a four-year period.

Had compensation cost for the Corporation's stock-based compensation plans been
determined in accordance with the fair value provisions of SFAS No. 123, net
income and earnings per share would have been as follows:

<TABLE>
<CAPTION>
(in thousands,
except per share data)                   1999            1998            1997
- -----------------------------------------------------------------------------
<S>                               <C>             <C>             <C>
Pro forma net income              $   639,169     $   578,335     $   506,875

Pro forma earnings per share:
  Basic                           $      4.09     $      3.71     $      3.20
  Diluted                                4.04            3.64            3.15
=============================================================================

<CAPTION>
                                                      Average per Share
- -----------------------------------------------------------------------
                                                    Exercise     Market
                                       Number          Price      Price
- -----------------------------------------------------------------------
<S>                                <C>             <C>        <C>
Outstanding--December 31, 1996      7,161,626      $   18.95  $   34.92
  Granted                           1,994,182          40.28      40.28
  Cancelled                          (266,295)         26.00      43.07
  Exercised                        (1,252,170)         15.93      44.81
  Expired                                --
- -----------------------------------------------------------------------
Outstanding--December 31, 1997      7,637,343      $   24.77  $   60.17
  Granted                           2,058,542          71.37      71.37
  Cancelled                          (232,617)         42.92      64.33
  Exercised                        (1,213,818)         21.33      64.07
  Expired                                --
- -----------------------------------------------------------------------
Outstanding--December 31, 1998      8,249,450      $   36.39  $   68.19
  Granted                           2,237,754          66.63      66.63
  Cancelled                          (202,392)         63.00      58.69
  Exercised                          (680,664)         18.86      62.76
  Expired                                --
- -----------------------------------------------------------------------
Outstanding--December 31, 1999      9,604,148      $   44.12  $   46.69
=======================================================================
Exercisable-- December 31, 1999     5,352,198
Available for grant                      --
              December 31, 1999       103,246
=======================================================================
</TABLE>

The following table summarizes information about stock options outstanding at
December 31, 1999:

<TABLE>
<CAPTION>
                                Outstanding                             Exercisable
- -----------------------------------------------------------------------------------
                                                 Average                   Average
   Exercise                        Average      Exercise                   Exercise
   Price Range          Shares     Life (a)       Price           Shares    Price
- -----------------------------------------------------------------------------------
<S>                    <C>             <C>       <C>            <C>        <C>
  $ 8.59 -$18.00          946,488       2.8       $14.43          946,488    $14.43
   18.59 - 21.00        1,292,130       4.5        19.02        1,292,130     19.02
   21.59 - 25.42        1,686,724       5.4        24.46        1,327,145     24.20
   28.33 - 65.13        1,751,145       7.3        41.73        1,009,539     41.19
   65.56 - 66.81        2,085,441       9.2        66.81             --        --
   68.44 - 71.58        1,842,220       8.2        71.58          776,896     71.58
- -----------------------------------------------------------------------------------
Total                   9,604,148       6.7       $44.12        5,352,198    $31.30
===================================================================================
</TABLE>

(a) Average contractual life remaining in years.
<PAGE>   33
52   Comerica Incorporated 1999 Annual Report

14   EMPLOYEE BENEFIT PLANS.....................................................

The Corporation has a defined benefit pension plan in effect for substantially
all full-time employees. Staff expense includes income of $0.8 million in
1999, $3.0 million in 1998 and $0.3 million in 1997 for the plan. Benefits under
the plan are based primarily on years of service and the levels of compensation
during the five highest paid consecutive calendar years occurring during the
last ten years before retirement. The plan's assets primarily consist of units
of certain collective investment funds administered by Munder Capital
Management, equity securities, U.S. government and agency securities and
corporate bonds and notes.

The Corporation's postretirement benefits plan continues postretirement health
care and life insurance benefits for retirees as of December 31, 1992, provides
a phase-out for employees over 50 as of that date and substantially reduces all
benefits for remaining employees. The Corporation has funded the plan with a
company-owned life insurance contract.

The following tables set forth reconciliations of the Corporation's pension and
postretirement plan obligations and plan assets:

<TABLE>
<CAPTION>
                                             Defined Benefit                Postretirement
                                                Pension Plan                  Benefit Plan
- ------------------------------------------------------------------------------------------
(in thousands)                           1999           1998           1999           1998
- ------------------------------------------------------------------------------------------
<S>                                 <C>            <C>            <C>            <C>
CHANGE IN BENEFIT OBLIGATION:
Benefit obligation at January 1     $ 542,941      $ 525,329      $  80,710      $  81,584
Service cost                           15,387         13,924            256            262
Interest cost                          38,118         36,039          5,308          5,509
Curtailment                              --           (5,518)          --             --
Actuarial gain                        (63,598)        (3,631)        (4,995)          (423)
Benefits paid                         (23,162)       (23,202)        (6,717)        (6,222)
- ------------------------------------------------------------------------------------------
Benefit obligation
     at December 31                 $ 509,686      $ 542,941      $  74,562      $  80,710
==========================================================================================
CHANGE IN PLAN ASSETS:
Fair value of plan assets at
     January 1                      $ 628,194      $ 585,215      $  88,312      $  86,727
Actual return on plan assets           46,750         66,181         (1,475)         4,226
Employer contributions                   --             --            4,271          3,581
Benefits paid                         (23,162)       (23,202)        (6,717)        (6,222)
- ------------------------------------------------------------------------------------------
Fair value of plan assets at
     December 31                    $ 651,782      $ 628,194      $  84,391      $  88,312
==========================================================================================
</TABLE>

The following table sets forth the funded status of the defined benefit pension
and postretirement plan and amounts recognized on the Corporation's balance
sheet:

<TABLE>
<CAPTION>
                                             Defined Benefit                Postretirement
                                                Pension Plan                  Benefit Plan
- ------------------------------------------------------------------------------------------
(in thousands)                           1999           1998           1999           1998
- ------------------------------------------------------------------------------------------
<S>                                 <C>            <C>            <C>            <C>
Funded status at December 31        $ 142,096      $  85,253      $   9,829      $   7,602
Unrecognized net gain                (106,068)       (44,829)        (4,701)        (7,115)
Unrecognized net transition
     (asset)/obligation                (5,690)       (10,524)        59,850         64,477
Unrecognized prior service cost        (2,072)        (2,394)          --             --
- ------------------------------------------------------------------------------------------
Prepaid benefit cost                $  28,266      $  27,506      $  64,978      $  64,964
==========================================================================================
</TABLE>

Components of net periodic benefit cost/(income):

<TABLE>
<CAPTION>
Defined Benefit Pension Plan
(in thousands)                                1999                 1998          1997
- -------------------------------------------------------------------------------------
<S>                                       <C>                  <C>           <C>
Service cost                              $ 15,387             $ 13,924      $ 12,400
Interest cost                               38,118               36,039        33,823
Expected return on plan assets             (51,241)             (48,887)      (42,313)
Amortization of unrecognized
  transition asset                          (4,834)              (4,834)       (4,834)
Amortization of unrecognized
  prior service cost                          (322)                (331)         (353)
Amortization of unrecognized net loss        2,132                1,071           978
- -------------------------------------------------------------------------------------
Net periodic benefit income               $   (760)            $ (3,018)     $   (299)
=====================================================================================

<CAPTION>

Postretirement Benefit Plan
(in thousands)                               1999         1998         1997
- ---------------------------------------------------------------------------
<S>                                       <C>          <C>          <C>
Service cost                              $   256      $   262      $   273
Interest cost                               5,308        5,509        5,710
Expected return on plan assets             (5,935)      (5,829)      (5,413)
Amortization of unrecognized
  transition obligation                     4,628        4,628        4,628
Amortization of unrecognized net gain        --           --            (56)
- ---------------------------------------------------------------------------
Net periodic benefit cost                 $ 4,257      $ 4,570      $ 5,142
===========================================================================
</TABLE>

Actuarial assumptions were as follows:

<TABLE>
<CAPTION>
Defined Benefit Pension Plan                              1999     1998     1997
- --------------------------------------------------------------------------------
<S>                                                        <C>      <C>      <C>
Discount rate used in determining benefit obligation       8.0%     7.0%     7.0%
Long-term rate of return on assets                         9.3%     9.0%     9.0%
Rate of compensation increase                              5.0%     5.0%     5.0%
================================================================================

<CAPTION>

Postretirement Benefit Plan                               1999     1998     1997
- --------------------------------------------------------------------------------
<S>                                                        <C>      <C>      <C>
Discount rate used in determining benefit obligation       8.0%     7.0%     7.0%
Long-term rate of return on assets                         6.7%     6.7%     6.7%
================================================================================
</TABLE>

The health care cost trend rate projected for 1999 was 5 percent and is assumed
to remain constant. Increasing each health care rate by one percentage point
would increase the accumulated postretirement benefit obligation by $5 million
at December 31, 1999, and the aggregate of the service and interest cost
components by $353 thousand for the year ended December 31, 1999. Decreasing
each health care rate by one percentage point would decrease the accumulated
postretirement benefit obligation by $4 million at December 31, 1999, and the
aggregate of the service and interest cost components by $315 thousand for the
year ended December 31, 1999.

The Corporation also maintains defined contribution plans (including 401(k)
plans) for various groups of its employees. All of the Corporation's salaried
and regular part-time employees are eligible to participate in one or more of
the plans. The Corporation makes matching contributions, most of which are based
on a declining percentage of employee contributions (currently, maximum per
employee is $1,000) as well as a performance-based matching contribution based
on the Corporation's financial performance. Staff expense includes expense of
$11.7 million in 1999, $11.1 million in 1998 and $9.7 million in 1997 for the
plans.

<PAGE>   34
                               Comerica Incorporated 1999 Annual Report       53

15   INCOME TAXES...............................................................

The current and deferred components of income taxes were as follows:

<TABLE>
<CAPTION>
(in thousands)                           1999         1998         1997
- -----------------------------------------------------------------------
<S>                                  <C>          <C>          <C>
Currently payable
     Federal                         $287,776     $245,486     $239,680
     Foreign                           22,797       27,263       30,723
     State and local                   10,174       13,847       15,584
- -----------------------------------------------------------------------
                                      320,747      286,596      285,987
Deferred federal, state and local      39,736       37,703          279
- -----------------------------------------------------------------------
     Total                           $360,483     $324,299     $286,266
=======================================================================
</TABLE>

There were $1.9 million, $2.1 million and $1.8 million of income taxes provided
on securities transactions in 1999, 1998 and 1997, respectively.

The principal components of deferred tax (assets) liabilities at December 31
were as follows:

<TABLE>
<CAPTION>
(in thousands)                                    1999                  1998
- ----------------------------------------------------------------------------
<S>                                          <C>                   <C>
Allowance for credit losses                  $(150,025)            $(142,889)
Lease financing transactions                   229,086               165,974
Allowance for depreciation                       2,871                10,899
Deferred loan origination fees and costs       (31,424)              (25,554)
Investment securities available for sale       (17,458)               (3,507)
Employee benefits                               (8,259)               (6,824)
Other temporary differences,net                (37,442)              (35,563)
- ----------------------------------------------------------------------------
     Total                                   $ (12,651)            $ (37,464)
============================================================================
</TABLE>

The provision for income taxes differs from that computed by applying the
federal statutory rate of 35 percent for the reasons in the following analysis:

<TABLE>
<CAPTION>
(in thousands)                                1999           1998           1997
- --------------------------------------------------------------------------------
<S>                                      <C>            <C>            <C>
Tax based on federal statutory rate      $ 361,575      $ 325,981      $ 285,860
Effect of tax-exempt interest income        (2,737)        (4,039)        (5,687)
Other                                        1,645          2,357          6,093
- --------------------------------------------------------------------------------
     Provision for income taxes          $ 360,483      $ 324,299      $ 286,266
================================================================================
</TABLE>

16   TRANSACTIONS WITH RELATED PARTIES..........................................

The bank subsidiaries have had, and expect to have in the future, transactions
with the Corporation's directors and their affiliates. Such transactions were
made in the ordinary course of business and included extensions of credit, all
of which were made on substantially the same terms, including interest rates and
collateral, as those prevailing at the same time for comparable transactions
with other customers and did not, in management's opinion, involve more than
normal risk of collectibility or present other unfavorable features. The
aggregate amount of loans attributable to persons who were related parties at
December 31, 1999, approximated $327 million at the beginning and $347 million
at the end of 1999. During 1999, new loans to related parties aggregated $559
million and repayments totaled $539 million.

<PAGE>   35
54   Comerica Incorporated 1999 Annual Report

17   REGULATORY CAPITAL AND BANKING SUBSIDIARIES................................

Banking regulations limit the transfer of assets in the form of dividends, loans
or advances from the bank subsidiaries to the Corporation. Under the most
restrictive of these regulations, the aggregate amount of dividends which can be
paid to the Corporation without obtaining prior approval from bank regulatory
agencies approximated $879 million at January 1, 2000, plus current year's
earnings. Substantially all the assets of the Corporation's subsidiaries are
restricted from transfer to the Corporation in the form of loans or advances.

Dividends paid to the Corporation by its banking subsidiaries amounted to $261
million in 1999, $442 million in 1998 and $354 million in 1997.

The Corporation and its banking subsidiaries are subject to various regulatory
capital requirements administered by the federal banking agencies. Quantitative
measures established by regulation to ensure capital adequacy require the
maintenance of minimum amounts and ratios of Tier 1 and total capital (as
defined in the regulations) to average and risk-weighted assets. At December
31, 1999 and 1998, the Corporation and all of its banking subsidiaries exceeded
the ratios required for an institution to be considered "well capitalized"
(total capital ratio greater than 10 percent). The following is a summary of the
capital position of the Corporation and its significant banking subsidiaries:

<TABLE>
<CAPTION>
                                            Comerica Inc.         Comerica      Comerica Bank-       Comerica Bank-
(in thousands)                             (Consolidated)             Bank               Texas           California
- -------------------------------------------------------------------------------------------------------------------
<S>                                        <C>                <C>                <C>                <C>
December 31, 1999

Tier 1 capital                             $   3,179,790      $   2,614,284      $     358,200      $       382,339
Total capital                                  4,903,202          4,046,166            452,678              576,282
Tier 1 capital to average assets
     (minimum-3.0%)                                 8.39%              8.53%              9.59%                8.60%
Tier 1 capital to risk-weighted assets
     (minimum-4.0%)                                 6.95               7.00              10.12                 7.48
Total capital to risk-weighted assets
     (minimum-8.0%)                                10.72              10.83              12.79                11.27

December 31, 1998

Tier 1 capital                             $   2,699,143      $   2,263,522      $     310,743      $       330,998
Total capital                                  4,435,977          3,740,843            407,268              453,387
Tier 1 capital to average assets
     (minimum-3.0%)                                 7.68%              8.02%              8.12%                8.04%
Tier 1 capital to risk-weighted assets
     (minimum-4.0%)                                 6.26               6.42               8.07                 7.35
Total capital to risk-weighted assets
     (minimum-8.0%)                                10.28              10.60              10.58                10.07
- -------------------------------------------------------------------------------------------------------------------
</TABLE>

18   FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK..........................

In the normal course of business, the Corporation enters into various
off-balance sheet transactions involving derivative financial instruments,
foreign exchange contracts and credit-related financial instruments to manage
exposure to fluctuations in interest rate, foreign currency and other market
risks and to meet the financing needs of customers. These financial instruments
involve, to varying degrees, elements of credit and market risk in excess of the
amount reflected in the consolidated balance sheets.

Credit risk is the possible loss that may occur in the event of nonperformance
by the counterparty to a financial instrument. The Corporation attempts to
minimize credit risk arising from off-balance sheet financial instruments by
evaluating the creditworthiness of each counterparty, adhering to the same
credit approval process used for traditional lending activities. Counterparty
risk limits and monitoring procedures have also been established to facilitate
the management of credit risk.

Collateral is obtained, if deemed necessary, based on the results of
management's credit evaluation. Collateral varies, but may include cash,
investment securities, accounts receivable, inventory, property, plant and
equipment or real estate.

Derivative financial instruments and foreign exchange contracts are traded over
an organized exchange or negotiated over-the-counter. Credit risk associated
with exchange-traded contracts is typically assumed by the organized exchange.
Over-the-counter contracts are tailored to meet the needs of the counterparties
involved and, therefore, contain a greater degree of credit risk and liquidity
risk than exchange-traded contracts which have standardized terms and readily
available price information. The Corporation reduces exposure to credit and
liquidity risks from over-the-counter derivative and foreign exchange contracts
by conducting such transactions with investment-grade domestic and foreign
investment banks or commercial banks.

<PAGE>   36

                                  Comerica Incorporated 1999 Annual Report    55

18   FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (CONTINUED)..............

Market risk is the potential loss that may result from movements in interest or
foreign currency rates which cause an unfavorable change in the value of a
financial instrument. The Corporation manages this risk by establishing monetary
exposure limits and monitoring compliance with those limits. Market risk arising
from derivative and foreign exchange positions entered into on behalf of
customers is reflected in the consolidated financial statements and may be
mitigated by entering into offsetting transactions. Market risk inherent in
off-balance sheet derivative and foreign exchange contracts held or issued for
risk management purposes is generally offset by changes in the value of rate
sensitive on-balance sheet assets or liabilities.

DERIVATIVE FINANCIAL INSTRUMENTS AND FOREIGN EXCHANGE CONTRACTS

The Corporation, as an end-user, employs a variety of off-balance sheet
financial instruments for risk management purposes. Activity related to these
instruments is centered predominantly in the interest rate markets and mainly
involves interest rate swaps. Various other types of instruments are also used
to manage exposures to market risks, including interest rate caps and floors,
total return swaps, foreign exchange forward contracts and foreign exchange swap
agreements. Refer to the section entitled "Risk Management Derivative Financial
Instruments and Foreign Exchange Contracts" in the financial review on page 38
for further information about the Corporation's objectives for using such
instruments.

The following table presents the composition of off-balance sheet derivative
financial instruments and foreign exchange contracts, excluding commitments,
held or issued for risk management purposes at December 31, 1999 and 1998.

Notional amounts, which represent the extent of involvement in the derivatives
market, are generally used to determine the contractual cash flows required in
accordance with the terms of the agreement. These amounts are typically not
exchanged, significantly exceed amounts subject to credit or market risk and are
not reflected in the consolidated balance sheets.

During 1999, the Corporation terminated a portion of its portfolio of index
amortizing interest rate swaps. The notional amount of these swaps totaled
$1,376 million. The gain resulting from early termination was deferred and is
being amortized over the remaining expected life of the swaps at time of
termination. In 1998, the Corporation terminated its portfolio of zero-coupon
interest rate swaps. The notional amount of these swaps totaled $700 million. A
portion of these swaps were replaced with paying swaps. The Corporation also
terminated its portfolio of principal only total return swaps in conjunction
with divesting the mortgage servicing business. The notional amount of these
swaps was $55 million.

Credit risk, which excludes the effects of any collateral or netting
arrangements, is measured as the cost to replace, at current market
rates, contracts in a profitable position. The amount of this exposure is
represented by the gross unrealized gains on derivative and foreign exchange
contracts.

<TABLE>
<CAPTION>
                                Notional/
                                 Contract Unrealized  Unrealized       Fair
(in millions)                      Amount      Gains      Losses      Value
- ---------------------------------------------------------------------------
<S>                                <C>        <C>        <C>         <C>
December 31, 1999
Risk management
     Interest rate swaps           $8,518     $   17     $ (172)     $ (155)
     Foreign exchange
        contracts:
        Spot and forwards           1,098         33        (23)         10
        Swaps                         115       --           (5)         (5)
- ---------------------------------------------------------------------------
          Total foreign
            exchange contracts      1,213         33        (28)          5
- ---------------------------------------------------------------------------
        Total risk
            management             $9,731     $   50     $ (200)     $ (150)
===========================================================================
December 31, 1998
Risk management
     Interest rate contracts:
        Swaps                      $6,869     $  152     $   (6)     $  146
        Options, caps and
          floors purchased             15       --         --          --
- ---------------------------------------------------------------------------
          Total interest
            rate contracts          6,884        152         (6)        146

     Foreign exchange
        contracts:
        Spot and forwards             782         32        (29)          3
        Swaps                         131         12       --            12
- ---------------------------------------------------------------------------
          Total foreign
            exchange contracts        913         44        (29)         15
- ---------------------------------------------------------------------------
          Total risk
            management             $7,797     $  196     $  (35)     $  161
===========================================================================
</TABLE>


Bilateral collateral agreements with counterparties covered 95 percent and 94
percent of the notional amount of interest rate derivative contracts at December
31, 1999 and 1998, respectively. These agreements reduce credit risk by
providing for the exchange of marketable investment securities to secure amounts
due on contracts in an unrealized gain position. In addition, at December 31,
1999, master netting arrangements had been established with all interest rate
swap counterparties and certain foreign exchange counterparties. These
arrangements effectively reduce credit risk by permitting settlement, on a net
basis, of contracts entered into with the same counterparty. The Corporation has
not experienced any material credit losses associated with derivative or foreign
exchange contracts.

<PAGE>   37
56   Comerica Incorporated 1999 Annual Report

18   FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (CONTINUED)..............

On a limited scale, fee income is earned from entering into various
transactions, principally foreign exchange contracts and interest rate caps,at
the request of customers. The Corporation does not speculate in derivative
financial instruments for the purpose of profiting in the short-term from
favorable movements in market rates.

Fair values for customer-initiated and other derivative and foreign exchange
contracts represent the net unrealized gains or losses on such contracts and are
recorded in the consolidated balance sheets. Changes in fair value are
recognized in the consolidated income statements. For the year ended December
31, 1999, unrealized gains and unrealized losses on customer-initiated and other
foreign exchange contracts averaged $19 million and $15 million, respectively.
For the year ended December 31, 1998, unrealized gains and unrealized losses
averaged $14 million and $9 million, respectively. These contracts also
generated noninterest income of $10 million in 1999 and $9 million in 1998.
Average positive and negative fair values and income related to
customer-initiated and other interest rate contracts were not material for 1999
and 1998.

The following table presents the composition of off-balance sheet derivative
financial instruments and foreign exchange contracts held or issued in
connection with customer-initiated and other activities at December 31, 1999 and
1998.

<TABLE>
<CAPTION>
                                    Notional/
                                     Contract Unrealized Unrealized        Fair
(in millions)                          Amount      Gains     Losses       Value
- -------------------------------------------------------------------------------
<S>                                    <C>        <C>        <C>         <C>
December 31,1999
Customer-initiated and other
     Interest rate contracts:
        Caps and floors written        $  166     $ --       $   (1)     $   (1)
        Caps and floors purchased         141          1       --             1
        Swaps                             256          2         (2)       --

          Total interest rate
            contracts                     563          3         (3)       --

     Foreign exchange
        contracts:
        Spot, forwards, futures
          and options                     579         14        (11)          3

          Total customer-initiated
             and other                 $1,142     $   17     $  (14)     $    3

December 31,1998
Customer-initiated and other
     Interest rate contracts:
        Caps and floors written        $  241     $ --       $   (1)     $   (1)
        Caps and floors purchased         176          1       --             1
        Swaps                             264          7         (6)          1

          Total interest rate
             contracts                    681          8         (7)          1

     Foreign exchange
        contracts:
        Spot, forwards, futures
          and options                     673         20        (13)          7

          Total customer-initiated
          and other                    $1,354     $   28     $  (20)     $    8
</TABLE>

Detailed discussions of each class of derivative financial instrument and
foreign exchange contract held or issued by the Corporation for both risk
management and customer-initiated and other activities are provided below.

INTEREST RATE SWAPS

Interest rate swaps are agreements in which two parties periodically exchange
fixed cash payments for variable payments based on a designated market rate or
index (or variable payments based on two different rates or indices for basis
swaps), applied to a specified notional amount until a stated maturity. The
Corporation's swap agreements are structured such that variable payments are
primarily based on prime, one-month LIBOR or three-month LIBOR. These
instruments are principally negotiated over-the-counter and are subject to
credit risk, market risk and liquidity risk.

INTEREST RATE OPTIONS, INCLUDING CAPS AND FLOORS

Option contracts grant the option holder the right to buy or sell an underlying
financial instrument for a predetermined price before the contract expires.
Interest rate caps and floors are option-based contracts which entitle the buyer
to receive cash payments based on the difference between a designated reference
rate and the strike price, applied to a notional amount. Written options,
primarily caps, expose the Corporation to market risk but not credit risk. A fee
is received at inception for assuming the risk of unfavorable changes in
interest rates. Purchased options contain both credit and market risk; however,
market risk is limited to the fee paid. Options are either exchange-traded or
negotiated over-the-counter. All interest rate caps and floors are
over-the-counter agreements.

FOREIGN EXCHANGE CONTRACTS

The Corporation uses foreign exchange rate swaps, including generic receive
variable swaps and cross-currency swaps, for risk management purposes. Generic
receive variable swaps involve payment, in a foreign currency, of the difference
between a contractually fixed exchange rate and an average exchange rate
determined at settlement, applied to a notional amount. Cross-currency swaps
involve the exchange of both interest and principal amounts in two different
currencies. Other foreign exchange contracts such as futures, forwards and
options are primarily entered into as a service to customers and to offset
market risk arising from such positions. Futures and forward contracts require
the delivery or receipt of foreign currency at a specified date and exchange
rate. Foreign currency options allow the holder to purchase or sell a foreign
currency at a specified date and price. Foreign exchange futures are
exchange-traded, while forwards, swaps and most options are negotiated
over-the-counter. Foreign exchange contracts expose the Corporation to both
market risk and credit risk.

<PAGE>   38
                                 Comerica Incorporated 1999 Annual Report     57

18   FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (CONTINUED)..............

COMMITMENTS

The Corporation also enters into commitments to purchase or sell earning assets
for risk management purposes. These transactions, which are similar in nature to
forward contracts, did not have a material impact on the consolidated financial
statements for the years ended December 31, 1999 and 1998. Commitments to
purchase and sell U.S. Treasury and municipal bond securities related to the
Corporation's trading account totaled $4 million and $17 million at December 31,
1999 and 1998, respectively. Outstanding commitments expose the Corporation to
both credit and market risk.

Available credit lines on fixed rate credit card and check product accounts,
which have characteristics similar to option contracts, totaled $1.2 billion and
$1.6 billion at December 31, 1999 and 1998, respectively. These commitments
expose the Corporation to the risk of a reduction in net interest income as
interest rates increase. Market risk exposure arising from fixed rate revolving
credit commitments is very limited, however, since it is unlikely that a
significant number of customers with these accounts will simultaneously borrow
up to their maximum available credit lines. Additional information concerning
unused commitments to extend credit is provided in the "Credit-Related Financial
Instruments" section below.

CREDIT-RELATED FINANCIAL INSTRUMENTS

The Corporation issues off-balance sheet financial instruments in connection
with commercial and consumer lending activities.

Credit risk associated with these instruments is represented by the contractual
amounts indicated in the following table:

<TABLE>
<CAPTION>
(in millions)                                             1999        1998
- --------------------------------------------------------------------------
<S>                                                    <C>         <C>
Unused commitments to extend credit                    $24,230     $28,393
Standby letters of credit and financial guarantees       4,064       3,632
Commercial letters of credit                               232         328
Credit default swaps                                        44          44
===========================================================================
</TABLE>

UNUSED COMMITMENTS TO EXTEND CREDIT

Commitments to extend credit are legally binding agreements to lend to a
customer, provided there is no violation of any condition established in the
contract. These commitments generally have fixed expiration dates or other
termination clauses and may require payment of a fee. Since many commitments
expire without being drawn upon, the total contractual amount of commitments
does not necessarily represent future cash requirements of the Corporation.
Total unused commitments to extend credit at December 31, 1999 and 1998,
included $3 billion of variable and fixed rate revolving credit commitments.
Other unused loan commitments, primarily variable rate, totaled $21 billion at
December 31, 1999, and $25 billion at December 31, 1998.

STANDBY AND COMMERCIAL LETTERS OF CREDIT AND FINANCIAL GUARANTEES

Standby and commercial letters of credit and financial guarantees represent
conditional obligations of the Corporation which guarantee the performance of a
customer to a third party. Standby letters of credit and financial guarantees
are primarily issued to support public and private borrowing arrangements,
including commercial paper, bond financing and similar transactions. Long-term
standby letters of credit and financial guarantees, defined as those maturing
beyond one year, expire in decreasing amounts through the year 2012, and were
$1,475 million and $1,432 million at December 31, 1999 and 1998, respectively.
The remaining standby letters of credit and financial guarantees, which mature
within one year, totaled $2,589 million and $2,200 million at December 31, 1999
and 1998, respectively. Commercial letters of credit are issued to finance
foreign or domestic trade transactions.

CREDIT DEFAULT SWAPS

Credit default swaps allow the Corporation to diversify its loan portfolio by
assuming credit exposure from different borrowers or industries without actually
extending credit in the form of a loan. Credit risk associated with credit
default swaps was $44 million at December 31, 1999 and 1998.

19   CONTINGENT LIABILITIES.....................................................

The Corporation and its subsidiaries are parties to litigation and claims
arising in the normal course of their activities. Although the amount of
ultimate liability, if any, with respect to such matters cannot be determined
with reasonable certainty, management, after consultation with legal
counsel, believes that the litigation and claims, some of which are substantial,
will not have a material adverse effect on the Corporation's consolidated
financial position.

In addition, management cannot predict with reasonable certainty the likelihood,
or the impact, of any future claims that may be brought against the Corporation.
For example, although the Corporation is not currently a named defendant in any
lawsuits involving year 2000 readiness, it is impossible to know whether any
claims in connection with the year 2000 will be asserted in the future, and the
potential liability, if any, that may arise from such claims.

<PAGE>   39
58   Comerica Incorporated 1999 Annual Report

20   USAGE RESTRICTIONS.........................................................

Cash and due from banks may include amounts required to be deposited with the
Federal Reserve Bank. These reserve balances vary, depending on the level of
customer deposits in the Corporation's subsidiary banks. The average amount of
these reserves was $103 million and $129 million for the years ended December
31, 1999 and 1998, respectively.

21   ESTIMATED FAIR VALUES OF FINANCIAL INSTRUMENTS.............................

Disclosure of the estimated fair values of financial instruments, which differ
from carrying values, often requires the use of estimates. In cases where quoted
market values are not available, the Corporation uses present value techniques
and other valuation methods to estimate the fair values of its financial
instruments. These valuation methods require considerable judgment, and the
resulting estimates of fair value can be significantly affected by the
assumptions made and methods used. Accordingly, the estimates provided herein do
not necessarily indicate amounts which could be realized in a current exchange.
Furthermore, as the Corporation normally intends to hold the majority of its
financial instruments until maturity, it does not expect to realize many of the
estimated amounts disclosed. The disclosures also do not include estimated fair
value amounts for items which are not defined as financial instruments, but
which have significant value. These include such items as core deposit
intangibles, the future earnings potential of significant customer relationships
and the value of trust operations and other fee generating businesses. The
Corporation does not believe that it would be practicable to estimate a
representational fair value for these types of items.

The Corporation used the following methods and assumptions:

Cash and short-term investments: The carrying amount approximates the estimated
fair value of these instruments, which consist of cash and due from
banks, interest-bearing deposits with banks and federal funds sold.

Trading account securities: These securities are carried at quoted market value
or the market value for comparable securities, which represents estimated fair
value.

Loans held for sale: The market value of these loans represents estimated fair
value or estimated net selling price. The market value is determined on the
basis of existing forward commitments or the market values of similar loans.

Investment securities: The market value of investment securities, which is based
on quoted market values or the market values for comparable securities,
represents estimated fair value.

Domestic commercial loans: These consist of commercial, real estate
construction, commercial mortgage and equipment lease financing loans. The
estimated fair value of the Corporation's variable rate commercial loans is
represented by their carrying value, adjusted by an amount which estimates the
change in fair value caused by changes in the credit quality of borrowers since
the loans were originated. The estimated fair value of fixed rate commercial
loans is calculated by discounting the contractual cash flows of the loans using
year-end origination rates derived from the Treasury yield curve or other
representative bases. The resulting amounts are adjusted to estimate the effect
of changes in the credit quality of borrowers since the loans were originated.

International loans: The estimated fair value of the Corporation's short-term
international loans which consist of trade-related loans, or loans which have
no cross-border risk due to the existence of domestic guarantors or liquid
collateral, is represented by their carrying value, adjusted by an amount which
estimates the effect on fair value of changes in the credit quality of borrowers
or guarantors. The estimated fair value of long-term international loans is
based on the quoted market values of these loans or on the market values of
international loans with similar characteristics.

Retail loans: This category consists of residential mortgage, consumer and auto
lease financing loans. The estimated fair value of residential mortgage loans is
based on discounted contractual cash flows or market values of similar loans
sold in conjunction with securitized transactions. For consumer loans, the
estimated fair values are calculated by discounting the contractual cash flows
of the loans using rates representative of year-end origination rates. The
resulting amounts are adjusted to estimate the effect of changes in the credit
quality of borrowers since the loans were originated.

Customers' liability on acceptances outstanding: The carrying amount
approximates the estimated fair value.

Loan servicing rights: The estimated fair value represents those servicing
rights recorded under SFAS No. 125, "Accounting for Transfers and Servicing of
Financial Assets and Extinguishments of Liabilities." Fair value is computed
using discounted cash flow analyses, using interest rates and prepayment speed
assumptions currently quoted for comparable instruments.

Deposit liabilities: The estimated fair value of demand deposits, consisting of
checking, savings and certain money market deposit accounts, is represented by
the amounts payable on demand. The carrying amount of deposits in foreign
offices approximates their estimated fair value, while the estimated fair value
of term deposits is calculated by discounting the scheduled cash flows using the
year-end rates offered on these instruments.

<PAGE>   40
                               Comerica Incorporated 1999 Annual Report       59

21   ESTIMATED FAIR VALUES OF FINANCIAL INSTRUMENTS (CONTINUED).................

Short-term borrowings: The carrying amount of federal funds purchased,
securities sold under agreements to repurchase and other borrowings approximates
estimated fair value.

Acceptances outstanding: The carrying amount approximates the estimated fair
value.

Medium- and long-term debt: The estimated fair value of the Corporation's
variable rate medium- and long-term debt is represented by its carrying value.
The estimated fair value of the fixed rate medium- and long-term debt is based
on quoted market values. If quoted market values are not available, the
estimated fair value is based on the market values of debt with similar
characteristics.

Derivative financial instruments and foreign exchange contracts: The estimated
fair value of interest rate swaps represents the amount the Corporation would
receive or pay to terminate or otherwise settle the contracts at the balance
sheet date, taking into consideration current unrealized gains and losses on
open contracts. The estimated fair value of foreign exchange futures and forward
contracts and commitments to purchase or sell financial instruments is based on
quoted market prices. The estimated fair value of interest rate and foreign
currency options (including interest rate caps and floors) is determined using
option pricing models.

Credit-related financial instruments: The estimated fair value of unused
commitments to extend credit and standby and commercial letters of credit is
represented by the estimated cost to terminate or otherwise settle the
obligations with the counterparties. This amount is approximated by the fees
currently charged to enter into similar arrangements, considering the remaining
terms of the agreements and any changes in the credit quality of counterparties
since the agreements were entered into. This estimate of fair value does not
take into account the significant value of the customer relationships and the
future earnings potential involved in such arrangements as the Corporation does
not believe that it would be practicable to estimate a representational fair
value for these items.

The estimated fair values of the Corporation's financial instruments at December
31, 1999 and 1998 are as follows:

<TABLE>
<CAPTION>
                                      1999                       1998
- ---------------------------------------------------------------------------------
                                Carrying    Estimated      Carrying     Estimated
(in millions)                     Amount   Fair Value        Amount    Fair Value
- ---------------------------------------------------------------------------------
<S>                          <C>           <C>           <C>           <C>
ASSETS
Cash and short-term
     investments               $  1,294      $  1,294      $  1,830      $  1,830
Trading account
     securities                      16            16             6             6
Loans held for sale                 505           535            46            46
Investment securities
     available for sale           2,739         2,739         2,712         2,712
Commercial loans                 20,655        20,444        19,086        19,016
International loans               2,573         2,538         2,713         2,696
Real estate construction
     loans                        1,709         1,710         1,080         1,075
Commercial mortgage
     loans                        4,774         4,674         4,179         4,216
Residential mortgage
     loans                          870           866         1,038         1,071
Consumer loans                    1,351         1,321         1,862         1,807
Lease financing                     761           753           647           648
- ---------------------------------------------------------------------------------
        Total loans              32,693        32,306        30,605        30,529
Less allowance for
     credit losses                 (476)         --            (452)         --
- ---------------------------------------------------------------------------------
Net loans                        32,217        32,306        30,153        30,529

Customers'liability on
     acceptances
        outstanding                  44            44            12            12

Loan servicing rights                 5             5             4             4

LIABILITIES
Demand deposits
     (noninterest-bearing)        6,136         6,136         6,999         6,999
Interest-bearing
     deposits                    17,155        17,137        17,314        17,340
- ---------------------------------------------------------------------------------
        Total deposits           23,291        23,273        24,313        24,339

Short-term borrowings             2,768         2,768         3,580         3,580
Acceptances
     outstanding                     44            44            12            12
Medium- and
     long-term debt               8,580         8,490         5,282         5,355

OFF-BALANCE
SHEET
FINANCIAL
INSTRUMENTS
Derivative financial
     instruments and
     foreign exchange
     contracts
        Risk management:
        Unrealized gains           --              50          --             196
        Unrealized losses            (1)         (200)         --             (35)

        Customer-initiated
        and other:
        Unrealized gains             17            17            28            28
        Unrealized losses           (14)          (14)          (20)          (20)

Credit-related financial
     instruments                   --             (15)         --             (13)
=================================================================================
</TABLE>

<PAGE>   41
60   Comerica Incorporated 1999 Annual Report

22   BUSINESS SEGMENT INFORMATION...............................................

The Corporation has strategically aligned its operations into three major lines
of business: the Business Bank, the Individual Bank and the Investment Bank.
These lines of business are differentiated based on the products and services
provided. Lines of business results are produced by the Corporation's internal
management accounting system. This system measures financial results based on
the internal organizational structure of the Corporation; information presented
is not necessarily comparable with similar information for any other financial
institution. The management accounting system assigns balance sheet and income
statement items to each line of business using certain methodologies which are
constantly being refined. For comparability purposes, amounts in all periods are
based on methodologies in effect at December 31, 1999. These methodologies,
which are briefly summarized in the following paragraph, may be modified as
management accounting systems are enhanced and changes occur in the
organizational structure or product lines. In addition to the three major lines
of business, the Finance Division is also reported as a segment.

The Corporation's internal funds transfer pricing system records cost of funds
or credit for funds using a combination of matched maturity funding for certain
assets and liabilities and a blended rate based on various maturities for the
remaining assets and liabilities. The credit loss provision is assigned based on
the amount necessary to maintain an allowance for credit losses adequate for
that line of business. Noninterest income and expenses directly attributable to
a line of business are assigned to that business. Direct expenses incurred by
areas whose services support the overall Corporation are allocated to the
business lines as follows: Product processing expenditures are allocated based
on standard unit costs applied to actual volume measurements; administrative
expenses are allocated based on estimated time expended; and corporate overhead
is assigned based on the ratio of a line of business' noninterest expenses to
total noninterest expenses incurred by all business lines. Common equity is
allocated based on credit, operational and business risks.

The following discussion provides information about the activities of each line
of business. A discussion of the financial results and the factors impacting
1999 performance can be found in the section entitled "Strategic Lines of
Business" in the financial review on page 29.

The Business Bank is comprised of middle market lending, asset-based
lending,large corporate banking and international financial services. This line
of business meets the needs of medium-size businesses, multinational
corporations and governmental entities by offering various products and
services, including commercial loans and lines of credit, deposits, cash
management, capital market products, international trade finance, letters of
credit, foreign exchange management services and loan syndication services.

The Individual Bank includes consumer lending, consumer deposit gathering,
mortgage loan origination and servicing, small business banking (annual sales
under $5 million) and private banking. This line of business offers a variety of
consumer products, including deposit accounts, direct and indirect installment
loans, credit cards, home equity lines of credit and residential mortgage loans.
In addition, a full range of financial services is provided to small businesses
and municipalities. Private lending and personal trust services are also
provided to meet the personal financial needs of affluent individuals (as
defined by individual net income or wealth).

The Investment Bank is responsible for the sale of mutual fund and annuity
products, as well as life, disability and long-term care insurance products.
This line of business also offers institutional trust products, retirement
services and provides investment management and advisory services, investment
banking and discount securities brokerage services.

The Finance segment includes the Corporation's securities portfolio and asset
and liability management activities. This segment is responsible for managing
the Corporation's funding, liquidity and capital needs, performing interest
sensitivity gap and earnings simulation analysis and executing various
strategies to manage the Corporation's exposure to interest rate risk.

The Other category includes divested business lines, the income and expense
impact of cash and credit loss reserves not assigned to specific business
lines, miscellaneous other items of a corporate nature and certain direct
expenses not allocated to business lines. The other category also includes the
financial results of Munder on a consolidated basis since July 1998, during
which time management considered strategic options for its majority interest. In
2000, results for Munder will be included in the Investment Bank.

<PAGE>   42
                                Comerica Incorporated 1999 Annual Report      61

22   BUSINESS SEGMENT INFORMATION (CONTINUED)...................................

Lines of business/segment financial results were as follows:

<TABLE>
<CAPTION>
                                          Business Bank                 Individual Bank             Investment Bank*
- -------------------------------------------------------------------------------------------------------------------------
(dollar amounts in millions)         1999     1998     1997       1999       1998      1997      1999       1998     1997
- -------------------------------------------------------------------------------------------------------------------------
<S>                               <C>      <C>      <C>       <C>        <C>       <C>       <C>          <C>      <C>
EARNINGS SUMMARY

Net interest income (FTE)         $   853  $   746  $   658   $    699   $   679   $    754  $     (4)    $   (3)  $   (2)
Provision for credit losses           149       79      (11)        (6)      (14)        82      --         --       --
Noninterest income                    193      154      128        294       300        269       135        122      107
Noninterest expenses                  339      308      299        599       586        598       126        113      101
Restructuring charge                 --       --       --         --        --         --        --         --       --
Provision for income taxes (FTE)      202      185      181        139       142        120         2          2        1
Net income (loss)                     356      328      317        261       265        223         3          4        3

SELECTED AVERAGE
BALANCES

Assets                            $26,121  $22,908  $19,884   $  7,042   $ 7,651   $  9,534  $     29     $   33   $   28
Loans                              25,021   21,555   18,276      6,584     7,076      8,936      --            1     --
Deposits                            4,529    4,332    3,929     17,332    17,213     17,055        24         34       41
Common equity                       1,604    1,340    1,062        715       736        769        27         27       23

STATISTICAL DATA

Return on average assets             1.36%    1.43%    1.60%      1.44%     1.47%      1.24%     5.83%      5.63%    4.15%
Return on average common equity     22.16    24.49    29.92      36.50     35.96      28.94     12.15      14.17    12.63
Efficiency ratio                    32.60    34.51    38.35      60.22     59.82      58.39       n/m        n/m      n/m

<CAPTION>

                                            Finance                         Other                          Total
- ---------------------------------------------------------------------------------------------------------------------------
                                     1999     1998     1997       1999      1998       1997      1999       1998       1997
- ---------------------------------------------------------------------------------------------------------------------------
<S>                               <C>      <C>      <C>       <C>        <C>       <C>       <C>         <C>       <C>
EARNINGS SUMMARY

Net interest income (FTE)         $     7  $    46  $    40   $     (3)  $  --     $      2  $  1,552    $ 1,468   $  1,452
Provision for credit losses          --       --       --          (29)       48         75       114        113        146
Noninterest income                      8        8        4         87        19         20       717        603        528
Noninterest expenses                    3        3        3         50        17          7     1,117      1,027      1,008
Restructuring charge                 --       --       --         --          (7)      --        --           (7)      --
Provision for income taxes (FTE)        4       18       15         18       (16)       (21)      365        331        296
Net income (loss)                       8       33       26         45       (23)       (39)      673        607        530

SELECTED AVERAGE
BALANCES

Assets                            $ 3,730  $ 4,320  $ 5,152   $     38   $    75   $    271  $ 36,960    $34,987  $  34,869
Loans                                 481      280       70       (526)     (313)       (73)   31,560     28,599     27,209
Deposits                              569      704      902         65       (30)        19    22,519     22,253     21,946
Common equity                         315      333      294        338       181        260     2,999      2,617      2,408

STATISTICAL DATA

Return on average assets             0.06%    0.28%    0.22%       n/m%      n/m%       n/m%     1.82%      1.74%      1.52%
Return on average common equity      2.41    10.00     8.98        n/m       n/m        n/m     21.86      22.54      21.32
Efficiency ratio                      n/m      n/m      n/m        n/m       n/m        n/m     49.35      49.39      51.04
===========================================================================================================================
</TABLE>

 * Included in noninterest expenses are fees internally transferred to other
   lines of business for referrals to the Investment Bank. If excluded,
   Investment Bank net income would have been $12 million in 1999, $9 million in
   1998 and $6 million in 1997. Return on average common equity would have been
   45.27% in 1999, 33.65% in 1998 and 27.49% in 1997.

n/m - not meaningful

<PAGE>   43
62   COMERICA INCORPORATED 1999 ANNUAL REPORT

23   PARENT COMPANY FINANCIAL STATEMENTS........................................

<TABLE>
<CAPTION>
BALANCE SHEETS--Comerica Incorporated
December 31 (in thousands,except share data)                                                        1999           1998
- -----------------------------------------------------------------------------------------------------------------------
<S>                                                                                          <C>            <C>
ASSETS
Cash and due from banks                                                                      $        80    $     2,728
Time deposits with banks                                                                          69,900         22,600
Investment securities available for sale                                                          27,505         22,392
Investment in subsidiaries, principally banks                                                  3,669,435      3,280,384
Premises and equipment                                                                             4,335          5,855
Other assets                                                                                      55,900         57,235
- -----------------------------------------------------------------------------------------------------------------------
     Total assets                                                                            $ 3,827,155    $ 3,391,194
=======================================================================================================================
LIABILITIES AND SHAREHOLDERS' EQUITY
Commercial paper                                                                             $    74,877    $      --
Long-term debt                                                                                   158,543        234,639
Advances from nonbanking subsidiaries                                                              3,882           --
Other liabilities                                                                                115,209        109,942
- -----------------------------------------------------------------------------------------------------------------------
     Total liabilities                                                                           352,511        344,581

Nonredeemable preferred stock--$50 stated value
     Authorized--5,000,000 shares
     Issued--5,000,000 shares in 1999 and 1998                                                   250,000        250,000
Common stock--$5 par value
     Authorized--325,000,000 shares
     Issued--157,233,107 shares in 1999 and 157,233,088 shares in 1998                           786,166        786,165
Capital surplus                                                                                   35,092         24,649
Accumulated nonowner changes in equity                                                           (31,702)        (6,455)
Retained earnings                                                                              2,485,204      2,086,589
Deferred compensation                                                                             (2,955)        (5,202)
Less cost of common stock in treasury--715,496 shares in 1999 and 1,351,997 shares in 1998       (47,161)       (89,133)
- -----------------------------------------------------------------------------------------------------------------------
     Total shareholders'equity                                                                 3,474,644      3,046,613
- -----------------------------------------------------------------------------------------------------------------------
     Total liabilities and shareholders'equity                                               $ 3,827,155    $ 3,391,194
=======================================================================================================================
<CAPTION>

STATEMENTS OF INCOME--Comerica Incorporated
Year Ended December 31 (in thousands)                                       1999         1998        1997
- ----------------------------------------------------------------------------------------------------------
<S>                                                                    <C>          <C>          <C>
INCOME
Income from subsidiaries
     Dividends from subsidiaries                                       $ 260,603    $ 442,495    $ 353,500
     Other interest income                                                   808        3,899        3,626
     Intercompany management fees                                         93,414      157,393      166,952
Other interest income                                                        347          545          559
Other noninterest income                                                  24,354        2,628        2,070
- ----------------------------------------------------------------------------------------------------------
     Total income                                                        379,526      606,960      526,707

EXPENSES
Interest on long-term debt and other borrowed funds                       17,193       22,214       26,129
Net interest rate swap income                                               (682)      (1,648)      (2,818)
Salaries and employee benefits                                            64,580       61,583       65,766
Occupancy expense                                                          5,840        6,630        9,373
Equipment expense                                                          1,572        1,873        2,053
Restructuring charge                                                        --            100         --
Other noninterest expenses                                                29,730       36,002       54,262
- ----------------------------------------------------------------------------------------------------------
     Total expenses                                                      118,233      126,754      154,765
- ----------------------------------------------------------------------------------------------------------
Income before income taxes and equity
   in undistributed net income of subsidiaries                           261,293      480,206      371,942
Income tax expense                                                           349       13,279        6,111
- ----------------------------------------------------------------------------------------------------------
                                                                         260,944      466,927      365,831
Equity in undistributed net income of subsidiaries, principally banks    411,645      140,149      164,645
- ----------------------------------------------------------------------------------------------------------
NET INCOME                                                             $ 672,589    $ 607,076    $ 530,476
==========================================================================================================
</TABLE>

<PAGE>   44

                               COMERICA INCORPORATED 1999 ANNUAL REPORT       63

23   PARENT COMPANY FINANCIAL STATEMENTS (CONTINUED)............................

<TABLE>
<CAPTION>
STATEMENTS OF CASH FLOWS-- Comerica Incorporated
Year Ended December 31 (in thousands)                                      1999          1998        1997
- ----------------------------------------------------------------------------------------------------------
<S>                                                                   <C>           <C>          <C>
OPERATING ACTIVITIES
     Net income                                                       $ 672,589     $ 607,076    $ 530,476
     Adjustments to reconcile net income to
      net cash provided by operating activities
          Undistributed earnings of
             subsidiaries, principally banks                           (411,645)     (140,149)    (164,645)
          Depreciation                                                    1,404         1,755        1,800
          Restructuring charge                                             --          (6,008)     (20,992)
          Other, net                                                      5,822         4,908        7,465
- ----------------------------------------------------------------------------------------------------------
               Total adjustments                                       (404,419)     (139,494)    (176,372)
- ----------------------------------------------------------------------------------------------------------
               Net cash provided by operating activities                268,170       467,582      354,104

INVESTING ACTIVITIES
     Purchase of investment securities available for sale                (7,687)      (11,640)      (4,092)
     Proceeds from sale of investment securities available for sale       2,580         1,983          427
     Proceeds from sales of fixed assets and other real estate              115           136       28,958
     Purchases of fixed assets                                             (316)       (1,222)      (1,424)
     Net (increase) decrease in bank time deposits                      (47,300)       57,800       25,300
     Net increase in receivables from subsidiaries                         --            --           (375)
     Capital transactions with subsidiaries                              (5,610)     (134,752)      (3,283)
- ----------------------------------------------------------------------------------------------------------
               Net cash provided by (used in) investing activities      (58,218)      (87,695)      45,511

FINANCING ACTIVITIES
     Net increase (decrease) in advances from subsidiaries                3,882        (4,054)       3,818
     Repayments and purchases of long-term debt                         (76,096)      (63,712)         141
     Net increase (decrease) in short-term borrowings                    74,877          --           (842)
     Proceeds from issuance of common stock                              23,268        50,885       35,082
     Purchase of common stock for treasury and retirement                (2,885)     (148,684)    (242,293)
     Dividends paid                                                    (235,646)     (211,966)    (195,412)
- ----------------------------------------------------------------------------------------------------------
               Net cash used in financing activities                   (212,600)     (377,531)    (399,506)
- ----------------------------------------------------------------------------------------------------------
Net increase (decrease) in cash on deposit at bank subsidiary            (2,648)        2,356          109
Cash on deposit at bank subsidiary at beginning of year                   2,728           372          263
- ----------------------------------------------------------------------------------------------------------
Cash on deposit at bank subsidiary at end of year                     $      80     $   2,728    $     372
- ----------------------------------------------------------------------------------------------------------
Interest paid                                                         $  19,184     $  15,290    $  25,799
==========================================================================================================
Income taxes recovered (paid)                                         $   9,807     $     975    $  (1,145)
==========================================================================================================
</TABLE>

<PAGE>   45
64   COMERICA INCORPORATED 1999 ANNUAL REPORT

24   SUMMARY OF QUARTERLY FINANCIAL INFORMATION.................................

The following quarterly information is unaudited. However, in the opinion of
management, the information reflects all adjustments which are necessary for the
fair presentation of the results of operations for the periods presented.

<TABLE>
<CAPTION>
                                                         1999
- -------------------------------------------------------------------------------
(in thousands,                          Fourth      Third     Second      First
except per share data)                 Quarter    Quarter    Quarter    Quarter
- -------------------------------------------------------------------------------
<S>                                   <C>        <C>        <C>        <C>
Interest income                       $729,838   $671,936   $641,501   $629,435
Interest expense                       321,563    281,544    261,859    260,603
Net interest income                    408,275    390,392    379,642    368,832
Provision for credit losses             45,000     21,000     28,000     20,000
Securities gains                         3,512         49        690      1,202
Noninterest income
     (excluding securities gains)      191,356    170,426    193,961    155,692
Noninterest expenses                   287,813    276,850    288,880    263,414
Net income                             175,681    170,414    167,382    159,112

Basic net income per common share     $   1.10   $   1.06   $   1.04   $   0.99
Diluted net income per common share       1.08       1.05       1.03       0.98

<CAPTION>
                                                            1998
- -----------------------------------------------------------------------------------
(in thousands,                           Fourth       Third      Second       First
except per share data)                  Quarter     Quarter     Quarter     Quarter
- -----------------------------------------------------------------------------------
<S>                                   <C>         <C>         <C>         <C>
Interest income                       $ 652,121   $ 639,562   $ 651,230   $ 673,861
Interest expense                        281,371     279,127     286,752     308,253
Net interest income                     370,750     360,435     364,478     365,608
Provision for credit losses              36,000      21,000      28,000      28,000
Securities gains/(losses)                 6,081         174          11        (150)
Noninterest income
(excluding securities gains)            161,306     151,940     148,784     135,002
Noninterest expenses                    263,051     253,821     253,299     249,873
Net income                              157,820     154,490     150,383     144,383

Basic net income per common share     $    0.99   $    0.97   $    0.94   $    0.89
Diluted net income per common share        0.97        0.95        0.92        0.88
- ---================================================================================
</TABLE>

25   PENDING ACCOUNTING PRONOUNCEMENTS..........................................

In June 1998, the Financial Accounting Standards Board issued SFAS No. 133,
"Accounting for Derivative Instruments and Hedging Activities." The Statement,
as amended by Statement No. 137, will require the Corporation to recognize all
derivatives on the balance sheet at fair value. Derivatives that are not hedges
must be adjusted to fair value through income. If the derivative is a hedge,
depending on the nature of the hedge, changes in fair value of derivatives will
either be offset against the change in fair value of the hedged assets,
liabilities, or firm commitments through earnings or recognized in other
comprehensive income until the hedged item is recognized in earnings. The
ineffective portion of a derivative's change in fair value will be immediately
recognized in earnings. Statement 133, as amended, is effective for fiscal years
beginning after September 15, 2000. The statement permits adoption as of the
beginning of any fiscal quarter. The Corporation expects to adopt SFAS No. 133
effective January 1,2001. The Corporation has not yet determined what the effect
of SFAS No. 133 will be on the earnings and financial position of the
Corporation. The FASB has not yet finalized several significant implementation
issues which affect the Corporation.

<PAGE>   46
                               COMERICA INCORPORATED 1999 ANNUAL REPORT       65

REPORT OF MANAGEMENT

Management is responsible for the accompanying financial statements and all
other financial information in this Annual Report. The financial statements have
been prepared in conformity with generally accepted accounting principles and
include amounts which of necessity are based on management's best estimates and
judgments and give due consideration to materiality. The other financial
information herein is consistent with that in the financial statements.

In meeting its responsibility for the reliability of the financial
statements, management develops and maintains systems of internal accounting
controls. These controls are designed to provide reasonable assurance that
assets are safeguarded and transactions are executed and recorded in accordance
with management's authorization. The concept of reasonable assurance is based on
the recognition that the cost of internal accounting control systems should not
exceed the related benefits. The systems of control are continually monitored by
the internal auditors whose work is closely coordinated with and supplements in
many instances the work of independent auditors.

The financial statements have been audited by independent auditors Ernst & Young
LLP. Their role is to render an independent professional opinion on management's
financial statements based upon performance of procedures they deem appropriate
under generally accepted auditing standards.

The Corporation's Board of Directors oversees management's internal control and
financial reporting responsibilities through its Audit & Legal Committee as well
as various other committees. The Audit & Legal Committee, which consists of
directors who are not officers or employees of the Corporation, meets
periodically with management and internal and independent auditors to assure
that they and the Committee are carrying out their responsibilities, and to
review auditing, internal control and financial reporting matters.

/S/ Eugene A. Miller
Eugene A. Miller
Chairman, President and Chief Executive Officer


/S/ Ralph W. Babb Jr.
Ralph W. Babb Jr.
Vice Chairman and Chief Financial Officer


/S/ Marvin J. Elenbaas
Marvin J. Elenbaas
Senior Vice President and Controller

REPORT OF INDEPENDENT AUDITORS

Board of Directors,
Comerica Incorporated

We have audited the accompanying consolidated balance sheets of Comerica
Incorporated and subsidiaries as of December 31, 1999 and 1998, and the related
consolidated statements of income, shareholders' equity and cash flows for each
of the three years in the period ended December 31, 1999. These financial
statements are the responsibility of the Corporation's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the 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 financial statements referred to above present fairly, in
all material respects, the consolidated financial position of Comerica
Incorporated and subsidiaries at December 31, 1999 and 1998, and the
consolidated results of their operations and their cash flows for each of the
three years in the period ended December 31, 1999, in conformity with accounting
principles generally accepted in the United States.

/S/ Ernst & Young LLP
Detroit, Michigan
January 18, 2000

<PAGE>   47
66   COMERICA INCORPORATED 1999 ANNUAL REPORT

HISTORICAL REVIEW-AVERAGE BALANCE SHEETS
COMERICA INCORPORATED AND SUBSIDIARIES

<TABLE>
<CAPTION>
Consolidated Financial Information
(in millions)                                                1999        1998        1997        1996        1995
- -----------------------------------------------------------------------------------------------------------------
<S>                                                      <C>         <C>         <C>         <C>         <C>
ASSETS
Cash and due from banks                                  $  1,518    $  1,622    $  1,686    $  1,576    $  1,500

Short-term investments                                        116         143         129         195         351

Investment securities                                       2,403       3,371       4,687       5,823       7,625

Commercial loans                                           19,681      16,973      14,234      12,686      11,302
International loans                                         2,627       2,342       1,953       1,541       1,257
Real estate construction loans                              1,364         989         866         707         541
Commercial mortgage loans                                   4,461       3,819       3,547       3,483       3,157
Residential mortgage loans                                    929       1,325       1,676       1,960       2,450
Consumer loans                                              1,816       2,575       4,486       4,624       4,569
Lease financing                                               682         576         447         351         285
- -----------------------------------------------------------------------------------------------------------------
     Total loans                                           31,560      28,599      27,209      25,352      23,561

Less allowance for credit losses                             (463)       (440)       (402)       (361)       (340)
- -----------------------------------------------------------------------------------------------------------------
     Net loans                                             31,097      28,159      26,807      24,991      23,221

Accrued income and other assets                             1,826       1,692       1,560       1,610       1,432
- -----------------------------------------------------------------------------------------------------------------
     Total assets                                        $ 36,960    $ 34,987    $ 34,869    $ 34,195    $ 34,129
=================================================================================================================
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing deposits                             $  6,255    $  6,151    $  5,815    $  5,589    $  4,767
Interest-bearing deposits                                  16,264      16,102      16,131      16,669      16,888
- -----------------------------------------------------------------------------------------------------------------
     Total deposits                                        22,519      22,253      21,946      22,258      21,655

Federal funds purchased and securities sold
   under agreements to repurchase                           2,823       2,510       2,017       2,106       2,816
Other borrowed funds                                          659         910       1,801       1,999       2,313
Accrued expenses and other liabilities                        421         415         467         400         324
Medium- and long-term debt                                  7,289       6,032       5,980       4,745       4,510
- -----------------------------------------------------------------------------------------------------------------
     Total liabilities                                     33,711      32,120      32,211      31,508      31,618

Shareholders' equity                                        3,249       2,867       2,658       2,687       2,511
- -----------------------------------------------------------------------------------------------------------------
     Total liabilities and shareholders' equity          $ 36,960    $ 34,987    $ 34,869    $ 34,195    $ 34,129
=================================================================================================================
</TABLE>

<PAGE>   48
                               COMERICA INCORPORATED 1999 ANNUAL REPORT       67

HISTORICAL REVIEW-STATEMENTS OF INCOME
COMERICA INCORPORATED AND SUBSIDIARIES

<TABLE>
<CAPTION>
Consolidated Financial Information
(in millions, except per share data)                              1999       1998       1997       1996       1995
- ------------------------------------------------------------------------------------------------------------------
<S>                                                            <C>        <C>        <C>        <C>        <C>
INTEREST INCOME
Interest and fees on loans                                     $ 2,501    $ 2,382    $ 2,318    $ 2,161    $ 2,091
Interest on investment securities
     Taxable                                                       157        219        310        372        474
     Exempt from federal income tax                                  5          7         11         18         26
- ------------------------------------------------------------------------------------------------------------------
       Total interest on investment securities                     162        226        321        390        500
Interest on short-term investments                                  10          9          9         12         23
- ------------------------------------------------------------------------------------------------------------------
       Total interest income                                     2,673      2,617      2,648      2,563      2,614

INTEREST EXPENSE
Interest on deposits                                               590        648        673        686        721
Interest on short-term borrowings                                  179        186        209        219        302
Interest on medium- and long-term debt                             411        368        374        295        289
Net interest rate swap (income)/expense                            (54)       (46)       (51)       (49)         2
- ------------------------------------------------------------------------------------------------------------------
       Total interest expense                                    1,126      1,156      1,205      1,151      1,314
- ------------------------------------------------------------------------------------------------------------------
       Net interest income                                       1,547      1,461      1,443      1,412      1,300
Provision for credit losses                                        114        113        146        114         87
- ------------------------------------------------------------------------------------------------------------------
       Net interest income after provision for credit losses     1,433      1,348      1,297      1,298      1,213

NONINTEREST INCOME
Fiduciary and investment management income                         241        184        147        133        125
Service charges on deposit accounts                                169        158        141        140        130
Commercial lending fees                                             49         43         32         23         21
Letter of credit fees                                               39         31         26         22         20
Securities gains                                                     5          6          5         14         12
Other noninterest income                                           214        181        177        175        191
- ------------------------------------------------------------------------------------------------------------------
       Total noninterest income                                    717        603        528        507        499

NONINTEREST EXPENSES
Salaries and employee benefits                                     640        565        539        561        562
Net occupancy expense                                               94         90         89         99         99
Equipment expense                                                   61         60         62         69         68
Outside processing fee expense                                      48         43         42         42         49
Restructuring charge                                              --           (7)      --           90       --
Other noninterest expenses                                         274        269        276        298        308
- ------------------------------------------------------------------------------------------------------------------
       Total noninterest expenses                                1,117      1,020      1,008      1,159      1,086
- ------------------------------------------------------------------------------------------------------------------
Income before income taxes                                       1,033        931        817        646        626
Provision for income taxes                                         360        324        287        229        213
- ------------------------------------------------------------------------------------------------------------------
NET INCOME                                                     $   673    $   607    $   530    $   417    $   413
==================================================================================================================
Net income applicable to common stock                          $   655    $   590    $   513    $   408    $   413
==================================================================================================================
Basic net income per common share                              $  4.20    $  3.79    $  3.24    $  2.41    $  2.38
Diluted net income per common share                               4.14       3.72       3.19       2.38       2.37
Cash dividends declared on common stock                        $   225    $   199    $   181    $   170    $   158
Dividends per common share                                     $  1.44    $  1.28    $  1.15    $  1.01    $  0.91
- ------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>   49
68   COMERICA INCORPORATED 1999 ANNUAL REPORT

HISTORICAL REVIEW--STATISTICAL DATA
COMERICA INCORPORATED AND SUBSIDIARIES

<TABLE>
<CAPTION>
Consolidated Financial Information                             1999          1998         1997          1996          1995
- --------------------------------------------------------------------------------------------------------------------------
<S>                                                        <C>           <C>          <C>           <C>           <C>
AVERAGE RATES
(FULLY TAXABLE EQUIVALENT BASIS)
Short-term investments                                         8.85%         6.25%        6.59%         6.23%         6.61%

Investment securities                                          6.76          6.81         6.94          6.79          6.72

Commercial loans                                               7.70          8.04         8.25          8.21          8.75
International loans                                            7.86          7.97         7.07          6.64          7.06
Real estate construction loans                                 8.48          9.24         9.38          9.22          9.52
Commercial mortgage loans                                      8.25          8.74         9.08          9.29          9.40
Residential mortgage loans                                     7.47          7.69         7.90          7.83          7.80
Consumer loans                                                 9.98         10.20         9.81          9.88         10.10
Lease financing                                                6.84          7.65         7.48          6.82          6.65
- --------------------------------------------------------------------------------------------------------------------------
     Total loans                                               7.93          8.34         8.53          8.54          8.90
- --------------------------------------------------------------------------------------------------------------------------
     Interest income as a percent of earning assets            7.85          8.17         8.29          8.20          8.35

Domestic deposits                                              3.48          3.91         4.09          4.04          4.05
Deposits in foreign offices                                    7.05          6.71         5.68          5.46          6.07
- --------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing deposits                           3.63          4.02         4.17          4.11          4.27

Federal funds purchased and securities sold
  under agreements to repurchase                               5.16          5.44         5.49          5.31          5.88
Other borrowed funds                                           5.07          5.40         5.45          5.36          5.87
Medium- and long-term debt                                     5.63          6.10         6.26          6.22          6.41
- --------------------------------------------------------------------------------------------------------------------------
     Interest expense as a percent of
       interest-bearing sources                                4.16          4.52         4.65          4.51          4.95
- --------------------------------------------------------------------------------------------------------------------------
     Interest rate spread                                      3.69          3.65         3.64          3.69          3.40

Impact of net noninterest-bearing
  sources of funds                                             0.86          0.92         0.89          0.85          0.79
- --------------------------------------------------------------------------------------------------------------------------
     Net interest margin as a percent of
       earning assets                                          4.55          4.57         4.53          4.54          4.19

RETURN ON AVERAGE COMMON
  SHAREHOLDERS' EQUITY                                        21.86         22.54        21.32         15.98         16.46

RETURN ON AVERAGE ASSETS                                       1.82          1.74         1.52          1.22          1.21

EFFICIENCY RATIO                                              49.35         49.39        51.04         60.36         60.09

PER SHARE DATA

Book value at year-end                                     $  20.60      $  17.94     $  16.02      $  14.70      $  15.17
Market value at year-end                                      46.69         68.19        60.17         34.92         26.67
Market value--high and low for year                           70-44         73-47        62-34         39-24         29-16

OTHER DATA

Number of banking offices                                       332           334          350           358           395
Number of employees (full-time equivalent)                   10,234        10,134        9,960        11,079        12,876
- --------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>   50
                               COMERICA INCORPORATED 1999 ANNUAL REPORT       69

SHAREHOLDER INFORMATION

STOCK

Comerica's stock trades on the New York Stock Exchange (NYSE) under the symbol
CMA.

SHAREHOLDER ASSISTANCE

Inquiries related to shareholder records, change of name, address or ownership
of stock, and lost or stolen stock certificates should be directed to the
transfer agent and registrar:

Norwest Shareowner Services
P.O. Box 64854
St. Paul, Minnesota 55164-0854
(800) 468-9716

ELIMINATION OF DUPLICATE MATERIALS

If you receive duplicate mailings at one address, you may have multiple
shareholder accounts. You can consolidate your multiple accounts into a
single, more convenient account by contacting the transfer agent shown above. In
addition, if more than one member of your household is receiving shareholder
materials, you can eliminate the duplicate mailings by contacting the transfer
agent.

DIVIDEND REINVESTMENT PLAN

Comerica offers a dividend reinvestment plan which permits participating
shareholders of record to reinvest dividends in Comerica common stock without
paying brokerage commissions or service charges. Participating shareholders also
may invest up to $3,000 in additional funds each quarter for the purchase of
additional shares. A brochure describing the plan in detail and an authorization
form can be requested from the transfer agent shown above.

DIVIDEND DIRECT DEPOSIT

Common shareholders of Comerica may have their dividends deposited into their
savings or checking account at any bank that is a member of the National
Automated Clearing House (ACH) system. Information describing this service and
an authorization form can be requested from the transfer agent shown above.

DIVIDEND PAYMENTS

Subject to approval of the board of directors, dividends customarily are paid on
Comerica's common stock on or about January 1, April 1, July 1 and October 1.

ANNUAL MEETING

The Annual Meeting of Shareholders of Comerica Incorporated will be held on
Friday, May 19, 2000, at 9:30 a.m. at the Detroit Institute of Arts, 5200
Woodward Avenue, Detroit, Michigan.


FORM 10-K

A COPY OF THE CORPORATION'S ANNUAL REPORT ON FORM 10-K, AS FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION, MAY BE OBTAINED WITHOUT CHARGE UPON WRITTEN
REQUEST TO THE SECRETARY OF THE CORPORATION AT THE ADDRESS LISTED ON PAGE 70.

STOCK PRICES, DIVIDENDS AND YIELDS

<TABLE>
<CAPTION>
                                    Dividend  Dividend(*)
Quarter          High         Low  Per Share     Yield
- --------------------------------------------------------
<S>            <C>         <C>     <C>        <C>
1999
Fourth         $61.38      $44.00      $0.36        2.7%
Third           61.63       47.63       0.36        2.6
Second          66.63       57.31       0.36        2.3
First           70.00       58.94       0.36        2.2
- --------------------------------------------------------
1998
Fourth         $69.00      $46.50      $0.32        2.2%
Third           71.94       51.00       0.32        2.1
Second          73.00       61.94       0.32        1.9
First           72.13       54.33       0.32        2.0
- --------------------------------------------------------
</TABLE>


(*) Dividend yield is calculated by annualizing the quarterly dividend per share
and dividing by an average of the high and low price in the quarter.

At January 31, 2000, there were approximately 17,227 holders of record of the
Corporation's common stock.

INVESTOR RELATIONS ON THE INTERNET

Go to www.comerica.com to find the latest investor relations information about
Comerica, including stock quotes, news releases and customized financial data.

COMMUNITY REINVESTMENT ACT (CRA) PERFORMANCE

Comerica is committed to meeting the credit needs of the communities it serves.
Following are the most recent CRA ratings for Comerica subsidiaries:

Comerica Bank (Michigan)              Outstanding
Comerica Bank-Texas                   Satisfactory
Comerica Bank-California              Satisfactory
Comerica Bank, N.A.                   Outstanding

EQUAL EMPLOYMENT OPPORTUNITY

Comerica is committed to its affirmative action program and practices which
ensure uniform treatment of employees without regard to race, creed, color, age,
national origin, religion, handicap, marital status, veteran status, weight,
height or sex.

PRODUCT INFORMATION CENTER

If you have any questions about Comerica's products and services, please contact
our Product Information Center at (800) 292-1300.

<PAGE>   1

                                                          State or Jurisdiction
                                                          of Incorporation or
Name                                                      Organization

Comerica Investment Services, Inc.                        Michigan
Comerica Capital Markets Corporation                      Michigan
Comerica Insurance Services, Inc.                         Michigan
Comerica Insurance Group, Inc.                            Michigan
Comerica Securities, Inc.                                 Michigan
Wilson, Kemp & Associates, Inc.                           Michigan
WAM Holdings, Inc.                                        Delaware
WAM Holdings II, Inc.                                     Delaware
Comerica AutoLease, Inc.                                  Michigan
VRB Corp.                                                 Michigan
Comerica International Corporation                        U.S.
Comerica Trust Company of Bermuda, Ltd.                   Bermuda
Comerica Holdings Incorporated                            Delaware
CMT Holdings, Inc.                                        Texas
Comerica Merchant Services, Inc.                          Delaware
Interstate Select Insurance Services, Inc.                California
Comerica Acceptance Corporation                           Michigan
Comerica Assurance Ltd                                    Bermuda
Comerica Corporate Services Incorporated                  Michigan
Comerica Reinsurance Company, Ltd.                        British Virgin Islands
Comerica Properties Corporation                           Michigan
Professional Life Underwriters Services, Inc.             Michigan
Comerica Trade Services Limited                           Hong Kong
Comerica Leasing Corporation                              Michigan
Comerica Management Company                               Michigan
Comerica Networking, Inc.                                 Michigan
Comerica Equities Incorporated                            Delaware
Comerica West Incorporated                                Delaware
Comerica West Financial Incorporated                      Delaware
Munder Capital Management                                 Delaware
World Asset Management                                    Delaware
Munder UK, L.L.C.                                         Delaware
Comerica Bank-Mexico, S.A.                                Mexico
Comerica Bank-California                                  California
Comerica Bank-Texas                                       Texas
Comerica Bank, National Association                       United States
Comerica Bank & Trust                                     United States
Comerica Bank-Canada                                      Canada
Comerica Bank                                             Michigan

<PAGE>   1
                                                                      EXHIBIT 23



                        Consent of Independent Auditors

We consent to the incorporation by reference in the Registration Statements
listed below of our report on the consolidated financial statements of Comerica
Incorporated and subsidiaries dated January 18, 2000, included in this Annual
Report on Form 10-K for the year ended December 31, 1999:


     Registration Statement No. 33-42485 on Form S-8 dated August 29, 1991

     Registration Statement No. 33-45500 on Form S-8 dated February 11, 1992

     Registration Statement No. 33-49964 on Form S-8 dated July 23, 1992

     Registration Statement No. 33-49966 on Form S-8 dated July 23, 1992

     Registration Statement No. 33-53220 on Form S-8 dated October 13, 1992

     Registration Statement No. 33-53222 on Form S-8 dated October 13, 1992

     Registration Statement No. 33-58823 on Form S-8 dated April 26, 1995

     Registration Statement No. 33-58837 on Form S-8 dated April 26, 1995

     Registration Statement No. 33-58841 on Form S-8 dated April 26, 1995

     Registration Statement No. 33-65457 on Form S-8 dated December 29, 1995

     Registration Statement No. 33-65459 on Form S-8 dated December 29, 1995

     Registration Statement No. 333-00839 on Form S-8 dated February 9, 1996

     Registration Statement No. 333-24569 on Form S-8 dated April 4, 1997

     Registration Statement No. 333-24567 on Form S-8 dated April 4, 1997

     Registration Statement No. 333-24565 on Form S-8 dated April 4, 1997

     Registration Statement No. 333-24555 on Form S-8 dated April 4, 1997

     Registration Statement No. 333-37061 on Form S-8 dated October 2, 1997



                                                           /s/ Ernst & Young LLP


Detroit, Michigan
March 28, 2000

<TABLE> <S> <C>

<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACED FROM THE DECEMBER
1999 FORM 10-K FOR COMERICA INCORPORATED AND SUBSIDIARIES AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                       1,201,990
<INT-BEARING-DEPOSITS>                          13,921
<FED-FUNDS-SOLD>                                77,954
<TRADING-ASSETS>                                16,369
<INVESTMENTS-HELD-FOR-SALE>                  2,739,464
<INVESTMENTS-CARRYING>                               0
<INVESTMENTS-MARKET>                                 0
<LOANS>                                     32,693,278
<ALLOWANCE>                                    476,470
<TOTAL-ASSETS>                              38,653,332
<DEPOSITS>                                  23,291,403
<SHORT-TERM>                                 2,768,031
<LIABILITIES-OTHER>                            539,397
<LONG-TERM>                                  8,579,857
                                0
                                    250,000
<COMMON>                                       786,166
<OTHER-SE>                                   2,438,478
<TOTAL-LIABILITIES-AND-EQUITY>              38,653,332
<INTEREST-LOAN>                              2,500,978
<INTEREST-INVEST>                              161,580
<INTEREST-OTHER>                                10,152
<INTEREST-TOTAL>                             2,672,710
<INTEREST-DEPOSIT>                             590,335
<INTEREST-EXPENSE>                           1,125,569
<INTEREST-INCOME-NET>                        1,547,141
<LOAN-LOSSES>                                  114,000
<SECURITIES-GAINS>                               5,453
<EXPENSE-OTHER>                              1,116,957
<INCOME-PRETAX>                              1,033,072
<INCOME-PRE-EXTRAORDINARY>                     672,589
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   672,589
<EPS-BASIC>                                       4.20
<EPS-DILUTED>                                     4.14
<YIELD-ACTUAL>                                    4.55
<LOANS-NON>                                    165,093
<LOANS-PAST>                                    47,676
<LOANS-TROUBLED>                                 7,347
<LOANS-PROBLEM>                                      0
<ALLOWANCE-OPEN>                               452,409
<CHARGE-OFFS>                                  120,976
<RECOVERIES>                                    31,004
<ALLOWANCE-CLOSE>                              476,470
<ALLOWANCE-DOMESTIC>                           236,189
<ALLOWANCE-FOREIGN>                             34,966
<ALLOWANCE-UNALLOCATED>                        205,315


</TABLE>


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