INDEPENDENT BANK CORP /MI/
POS462C, 1997-01-15
STATE COMMERCIAL BANKS
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<PAGE>   1
 
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 15, 1997
    
 
   
                                        REGISTRATION NO. 333-14507, 333-14507-01
    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                         ------------------------------
 
   
                         POST-EFFECTIVE AMENDMENT NO. 1
    
                                       TO
                                    FORM S-2
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                         ------------------------------
 
<TABLE>
<S>                                        <C>
      INDEPENDENT BANK CORPORATION                    IBC CAPITAL FINANCE
(EXACT NAME OF REGISTRANT AS SPECIFIED IN  (EXACT NAME OF CO-REGISTRANT AS SPECIFIED
              ITS CHARTER)                              IN ITS CHARTER)
 
                MICHIGAN                                   DELAWARE
     (STATE OR OTHER JURISDICTION OF            (STATE OR OTHER JURISDICTION OF
     INCORPORATION OR ORGANIZATION)             INCORPORATION OR ORGANIZATION)
               38-2032782                                 38-6681043
  (I.R.S. EMPLOYER IDENTIFICATION NO.)       (I.R.S. EMPLOYER IDENTIFICATION NO.)
</TABLE>
 
                              230 WEST MAIN STREET
                             IONIA, MICHIGAN 48846
                                 (616) 527-9450
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF
         REGISTRANT'S AND CO-REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                         ------------------------------
 
                                WILLIAM R. KOHLS
                              230 WEST MAIN STREET
                             IONIA, MICHIGAN 48846
                                 (616) 527-9450
 (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                             OF AGENT FOR SERVICE)
                         ------------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                                  <C>
             MICHAEL G. WOOLDRIDGE                                 JAMES L. NOUSS, JR.
    VARNUM, RIDDERING, SCHMIDT & HOWLETT LLP                          BRYAN CAVE LLP
            333 BRIDGE STREET, N.W.                            211 N. BROADWAY, SUITE 3600
          GRAND RAPIDS, MICHIGAN 49504                        ST. LOUIS, MISSOURI 63102-2750
                 (616) 336-6000                                       (314) 259-2000
</TABLE>
 
                         ------------------------------
 
   
     DATE OF COMMENCEMENT OF SALE TO THE PUBLIC: December 13, 1996.
    
 
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933 check the following box. [ ]
 
     If the Registrant elects to deliver its latest annual report to security
holders, or a complete and legible facsimile thereof, pursuant to Item 11(a)(1)
of this Form, check the following box. [ ]
 
     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [ ]
 
   
     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [X] Registration No. 333-14507, 333-14507-01
    
 
     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------
                                                               PROPOSED MAXIMUM    PROPOSED MAXIMUM
          TITLE OF EACH CLASS OF              AMOUNT TO BE      OFFERING PRICE    AGGREGATE OFFERING     AMOUNT OF
       SECURITIES BEING REGISTERED            REGISTERED(1)        PER UNIT             PRICE        REGISTRATION FEE
- ----------------------------------------------------------------------------------------------------------------------
<S>                                         <C>              <C>                 <C>                 <C>
Preferred Securities of IBC Capital
  Finance(1)..............................       690,000            $25.00           $17,250,000       $5,227.27(2)
Subordinated Debentures of Independent
  Bank Corporation(3).....................         (3)                --                  --                --
Guarantee of Independent Bank Corporation
  with respect to Preferred
  Securities(4)...........................         (4)                --                  --                --
- ----------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------
</TABLE>
 
   
(1) Includes 90,000 Preferred Securities sold by IBC Capital Finance to cover
    over-allotments.
    
(2) Registration fee was previously paid.
   
(3) The Subordinated Debentures have been purchased by IBC Capital Finance with
    the proceeds of the sale of the Preferred Securities. Such securities may
    later be distributed for no additional consideration to the holders of the
    Preferred Securities of IBC Capital Finance upon its dissolution and the
    distribution of its assets.
    
   
(4) This Registration Statement is deemed to cover the Subordinated Debentures
    of Independent Bank Corporation, the rights of holders of Subordinated
    Debentures of Independent Bank Corporation under the Indenture, and the
    rights of holders of the Preferred Securities under the Trust Agreement, the
    Guarantee and the Expense Agreement entered into by Independent Bank
    Corporation. No separate consideration will be received for the Guarantee.
    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
                                    PART II
 
INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
     Expenses in connection with the issuance and distribution of the securities
being registered are estimated as follows, all of which are to be borne by the
Company:
 
   
<TABLE>
        <S>                                                                 <C>
        SEC Registration Fee.............................................   $  5,227.27
        NASD Filing Fee..................................................      2,225.00
        Nasdaq Listing Fee...............................................      1,000.00
        Printing and Engraving Expenses..................................    105,000.00
        Accounting Fees..................................................     80,000.00
        Transfer and Registrar's Fees....................................      2,000.00
        Legal Fees and Expenses..........................................    122,000.00
        Blue Sky Qualification Fees and Expenses.........................      5,000.00
        Miscellaneous....................................................      2,500.00
                                                                            -----------
             Total.......................................................   $324,952.27
                                                                            ===========
</TABLE>
    
 
                                      II-1
<PAGE>   3
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, the Company
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-2 and has duly caused this Amendment to the
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Ionia, State of Michigan on January 13, 1997.
    
 
                                          INDEPENDENT BANK CORPORATION
 
                                          /s/ CHARLES C. VAN LOAN
 
                                          --------------------------------------
                                          Charles C. Van Loan, Principal
                                          Executive Officer
 
   
     Pursuant to the requirements of Securities Act of 1933, IBC Capital Finance
certifies that it has reasonable grounds to believe that it meets all the
requirements for filing on Form S-2 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Ionia, and the State of Michigan on the 13th day of
January, 1997.
    
 
                                          IBC CAPITAL FINANCE
 
                                          By: /s/ WILLIAM R. KOHLS
 
                                          --------------------------------------
                                          William R. Kohls, Trustee
 
                                          By: /s/ CHARLES C. VAN LOAN
 
                                          --------------------------------------
                                          Charles C. Van Loan, Trustee
 
     Pursuant to the requirements of the Securities Act of 1933, this Amendment
to the Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.
 
   
<TABLE>
<CAPTION>
              SIGNATURE                                POSITION                      DATE
- -------------------------------------     ----------------------------------   ----------------
<C>                                       <S>                                  <C>
       /s/ CHARLES C. VAN LOAN            Principal Executive Officer and      January 13, 1997
- -------------------------------------     Director
         Charles C. Van Loan
        /s/ WILLIAM R. KOHLS              Principal Financial Officer          January 13, 1997
- -------------------------------------
          William R. Kohls
      /s/ JAMES J. TWAROZYNSKI            Principal Accounting Officer         January 13, 1997
- -------------------------------------
        James J. Twarozynski
       /s/ WILLIAM F. EHINGER*            Director                             January 13, 1997
- -------------------------------------
         William F. Ehinger
        /s/ KEITH E. BAZAIRE*             Director                             January 13, 1997
- -------------------------------------
          Keith E. Bazaire
         /s/ TERRY L. HASKE*              Director                             January 13, 1997
- -------------------------------------
           Terry L. Haske
         /s/ THOMAS F. KOHN*              Director                             January 13, 1997
- -------------------------------------
           Thomas F. Kohn
       /s/ ROBERT J. LEPPINK*             Director                             January 13, 1997
- -------------------------------------
          Robert J. Leppink
        /s/ REX P. O'CONNOR*              Director                             January 13, 1997
- -------------------------------------
           Rex P. O'Connor
      /s/ ARCH V. WRIGHT, JR.*            Director                             January 13, 1997
- -------------------------------------
         Arch V. Wright, Jr.
       /s/ CHARLES A. PALMER*             Director                             January 13, 1997
- -------------------------------------
          Charles A. Palmer
                 *By
        /s/ WILLIAM R. KOHLS
- -------------------------------------
 William R. Kohls, Attorney-in-Fact
</TABLE>
    
 
                                      II-3
<PAGE>   4
 
                                 EXHIBIT INDEX
 
   
<TABLE>
<CAPTION>
                                 EXHIBIT NUMBER AND DESCRIPTION
         -------------------------------------------------------------------------------
<S>      <C>                                                                               <C>
 1*      Underwriting Agreement dated December 13, 1996.
 4.1*    Indenture, dated as of December 17, 1996.
 4.2*    Subordinated Debenture dated as of December 17, 1996.
 4.3     Certificate of Trust of IBC Capital Finance.
 4.4     Trust Agreement of IBC Capital Finance dated as of November 7, 1996.
 4.5*    Amended and Restated Trust Agreement of IBC Capital Finance dated as of
         December 17, 1996.
 4.6*    Preferred Security Certificate of IBC Capital Finance.
 4.7*    Preferred Securities Guarantee Agreement for IBC Capital Finance dated as of
         December 17, 1996.
 4.8*    Agreement as to Expenses and Liabilities dated as of December 17, 1996.
 4.9     Restated Articles of Incorporation of the Company (incorporated herein by
         reference to Exhibit 3(i) to the Company's report on Form 10-Q for the quarter
         ended June 30, 1994).
 4.10    Amended and Restated Bylaws of the Company (incorporated herein by reference to
         Exhibit 3(ii) to the Company's report on Form 10-Q for the quarter ended June
         30, 1994).
 5.1     Opinion of Varnum, Riddering, Schmidt & Howlett LLP as to the validity of the
         issuance of the Subordinated Debentures and the Guarantee to be issued by the
         Company.
 5.2     Opinion of Richards, Layton & Finger, special Delaware counsel, as to the
         validity of the issuance of Preferred Securities to be issued by IBC Capital
         Finance.
 8       Opinion of Varnum, Riddering, Schmidt & Howlett LLP as to certain federal
         income tax matters.
10(A)    Deferred Benefit Plan for Directors (incorporated herein by reference to
         Exhibit 10(C) to the Company's report on Form 10-K for the year ended December
         31, 1984)
10(B)    The form of Indemnity Agreement approved by the Company's shareholders at its
         April 19, 1988 Annual Meeting, as executed with all of the Directors of the
         Company (incorporated herein by reference to Exhibit 10(F) to the Company's
         report on Form 10-K for the year ended December 31, 1988)
10(C)    Incentive Share Grant Plan, as amended, approved by the Company's shareholders
         at its April 21, 1992 Annual Meeting (incorporated herein by reference to
         Exhibit 10 to the Company's report on Form 10-K for the year ended December 31,
         1992)
10(D)    Nonemployee Director Stock Option Plan, approved by the Company's shareholders
         at its April 21, 1992 Annual Meeting (incorporated herein by reference to
         Exhibit 28 to the Company's Form S-8 Registration Statement, dated April 23,
         1993, filed under Registration No. 33-62086)
10(E)    Employee Stock Option Plan, approved by the Company's shareholders at its April
         21, 1992 Annual Meeting (incorporated herein by reference to Exhibit 28 to the
         Company's Form S-8 Registration Statement, dated April 30, 1993, filed under
         Registration No. 33-62090)
10(F)    Agreement and Plan of Reorganization among the Company, IBC Interim Co., and
         North Bank Corporation, dated February 2, 1996 (incorporated by reference to
         Exhibit 2.1 to the Company's Current Report on 8-K filed June 16, 1996)
10(G)    Agreement to Purchase Assets and Assume Liabilities By and Between the Company
         and First of America Bank-Michigan, National Association, dated September 18,
         1996
12       Computation of ratio of earnings to fixed charges.
</TABLE>
    
 
                                      II-4
<PAGE>   5
 
   
<TABLE>
<CAPTION>
                                 EXHIBIT NUMBER AND DESCRIPTION
         -------------------------------------------------------------------------------
<S>      <C>                                                                               <C>
23.1     Consent of KPMG Peat Marwick LLP, Independent Auditors.
23.2     Consent of Crowe, Chizek and Company LLP, Independent Auditors.
23.3     Consent of Varnum, Riddering, Schmidt & Howlett LLP (included in their opinion
         filed herewith as Exhibit 5.1)
23.4     Consent of Richards, Layton & Finger (included in their opinion filed herewith
         as Exhibit 5.2)
24       Power of Attorney (included on the signature page)
25.1     Form T-1 Statement of Eligibility of State Street Bank and Trust Company to act
         as trustee under the Indenture.
25.2     Form T-1 Statement of Eligibility of State Street Bank and Trust Company to act
         as trustee under Amended and Restated Trust Agreement.
25.3     Form T-1 Statement of Eligibility of State Street Bank and Trust Company to act
         as trustee under the Preferred Securities Guarantee Agreement.
</TABLE>
    
 
- -------------------------
 * Filed herewith.
 
                                      II-5

<PAGE>   1
                                                                       EXHIBIT 1



                          600,000 Preferred Securities

                              IBC Capital Finance

                  9.25% Cumulative Trust Preferred Securities
               (Liquidation Amount of $25 per Preferred Security)


                             UNDERWRITING AGREEMENT


                                                     December 12, 1996



STIFEL, NICOLAUS & COMPANY, INCORPORATED
500 North Broadway
St. Louis, Missouri 63102

Dear Sirs:

     Independent Bank Corporation, a Michigan corporation (the "Company") and
its financing subsidiary, IBC Capital Finance, a Delaware business trust (the
"Trust", and hereinafter together with the Company, the "Offerors"), propose
that the Trust issue and sell to Stifel, Nicolaus & Company, Incorporated
(sometimes referred to herein as the "Underwriter"), pursuant to the terms of
this Agreement, 600,000 of the Trust's 9.25% Cumulative Trust Preferred
Securities, with a liquidation amount of $25.00 per preferred security (the
"Preferred Securities"), to be issued under the Trust Agreement (as hereinafter
defined), the terms of which are more fully described in the Prospectus (as
hereinafter defined).  The aforementioned 600,000 Preferred Securities to be
sold to the Underwriter are herein called the "Firm Preferred Securities".
Solely for the purpose of covering over-allotments in the sale of the Firm
Preferred Securities, the Offerors further propose that the Trust issue and
sell to the Underwriter, at its option, up to an additional 90,000 Preferred
Securities (the "Option Preferred Securities") upon exercise of the
over-allotment option granted in Section 1 hereof.  The Firm Preferred
Securities and any Option Preferred Securities are herein collectively referred
to as the "Designated Preferred Securities".

     The Offerors hereby confirm as follows their agreement with the
Underwriter in connection with the proposed purchase of the Designated
Preferred Securities.



<PAGE>   2



     1. SALE, PURCHASE AND DELIVERY OF DESIGNATED PREFERRED SECURITIES;
DESCRIPTION OF DESIGNATED PREFERRED SECURITIES.

     (a)  On the basis of the representations, warranties and agreements herein
contained, and subject to the terms and conditions herein set forth, the
Offerors hereby agree that the Trust shall issue and sell to the Underwriter
and the Underwriter agrees to purchase from the Trust, at a purchase price of
$25.00 per share (the "Purchase Price"), the Firm Preferred Securities.
Because the proceeds from the sale of the Firm Preferred Securities will be
used to purchase from the Company its Subordinated Debentures (as hereinafter
defined and as described in the Prospectus), the Company shall pay to the
Underwriter a commission of $1.00 per Firm Preferred Security (the "Firm
Preferred Securities Commission").

     In addition, on the basis of the representations, warranties and
agreements herein contained and subject to the terms and conditions herein set
forth, the Trust hereby grants to the Underwriter an option to purchase all or
any portion of the 90,000 Option Preferred Securities, and upon the exercise of
such option in accordance with this Section 1, the Offerors hereby agree that
the Trust shall issue and sell to the Underwriter, and the Underwriter agrees
to purchase from the Trust, all or any portion of the Option Preferred
Securities at the same Purchase Price per share paid for the Firm Preferred
Securities.  Because the proceeds from the sale of the Option Preferred
Securities will be used to purchase from the Company its Subordinated
Debentures, the Company shall pay to the Underwriter a commission of $1.00 per
Option Preferred Security for each Option Preferred Security purchased (the
"Option Preferred Securities Commission").  The option hereby granted (the
"Option") shall expire 30 days after the date upon which the Registration
Statement (as hereinafter defined) becomes effective and may be exercised only
for the purpose of covering over-allotments which may be made in connection
with the offering and distribution of the Firm Preferred Securities.  The
Option may be exercised in whole or in part at any time (but not more than
once) by the Underwriter giving notice (confirmed in writing) to the Trust
setting forth the number of Option Preferred Securities as to which the
Underwriter is exercising the Option and the time, date and place for payment
and delivery of certificates for such Option Preferred Securities.  Such time
and date of payment and delivery for the Option Preferred Securities (the
"Option Closing Date") shall be determined by the Underwriter, but shall not be
earlier than two nor later than five full business days after the exercise of
such Option, nor in any event prior to the Closing Date (as hereinafter
defined).  The Option Closing Date may be the same as the Closing Date.

     Payment of the Purchase Price and the Firm Preferred Securities Commission
and delivery of certificates for the Firm Preferred Securities shall be made at
the offices of the Underwriter, 500 North Broadway, St. Louis, Missouri 63102,
or such other place as shall be agreed to by the Underwriter and the Offerors,
at 10:00 a.m., St. Louis time, on December 18, 1996, or at such other






                                      2

<PAGE>   3

time not more than five full business days thereafter as the Offerors and the
Underwriter shall determine (the "Closing Date").  If the Underwriter exercises
the option to purchase any or all of the Option Preferred Securities, payment
of the Purchase Price and Option Preferred Securities Commission and delivery
of certificates for such Option Preferred Securities shall be made on the
Option Closing Date at the Underwriter's office, or at such other place as the
Offerors and the Underwriter shall determine.  Such payments shall be made to
an account designated by the Trust by wire transfer prior to 1:00 p.m. eastern
standard time on the Closing Date (or the Option Closing Date, if applicable),
in the amount of the Purchase Price therefor, against delivery by or on behalf
of the Trust to the Underwriter of certificates for the Designated Preferred
Securities to be purchased by the Underwriter.

     The Agreement contained herein with respect to the timing of the Closing
Date and Option Closing Date is intended to, and does, constitute an express
agreement, as described in Rule 15c6-1(c) and (d) promulgated under the 1934
Act (as defined herein), for a settlement date other than four business days
after the date of the contract.

     Certificates for Designated Preferred Securities to be purchased by the
Underwriter shall be delivered by the Offerors in fully registered form in the
name of Cede & Co., the nominee of the Depositary (as defined in the
Prospectus) which shall act as securities depositary for the Designated
Preferred Securities, not later than 12:00 noon, St. Louis time, two business
days prior to the Closing Date and, if applicable, the Option Closing Date.
Certificates for Designated Preferred Securities to be purchased by the
Underwriter shall be made available by the Offerors to the Underwriter for
inspection, checking and packaging at the offices of the Depositary not later
than 1:00 p.m., St. Louis time, on the last business day prior to the Closing
Date and, if applicable, on the last business day prior to the Option Closing
Date.

     Time shall be of the essence, and delivery of the certificates for the
Designated Preferred Securities at the time and place specified pursuant to
this Agreement is a further condition of the obligations of the Underwriter
hereunder.

     (b) The Offerors propose that the Trust issue the Designated Preferred
Securities pursuant to an Amended and Restated Trust Agreement among State
Street Bank and Trust Company, as Property Trustee, Wilmington Trust Company,
as Delaware Trustee, the Administrative Trustees named therein, (collectively,
the "Trustees"), and the Company, in substantially the form heretofore
delivered to the Underwriter, said Agreement being hereinafter referred to as
the "Trust Agreement".  In connection with the issuance of the Designated
Preferred Securities, the Company proposes (i) to issue its Subordinated
Debentures (the "Debentures") pursuant to an Indenture, dated as of December
17, 1996, between the Company and State Street Bank and Trust Company, as
Trustee (the




                                      3

<PAGE>   4

"Indenture") and (ii) to guarantee certain payments on the Designated Preferred
Securities pursuant to a Guarantee Agreement between the Company and State
Street Bank and Trust Company, as guarantee trustee (the "Guarantee"), to the
extent described therein.

     2. REPRESENTATIONS AND WARRANTIES.

     (a) The Offerors jointly and severally represent and warrant to, and agree
with, the Underwriter that:

           (i) The reports filed with the Securities and Exchange Commission
      (the "Commission") by the Company under the Securities Exchange Act of
      1934, as amended (the "1934 Act") and the rules and regulations
      thereunder (the "1934 Act Regulations") at the time they were filed with
      the Commission, complied as to form in all material respects with the
      requirements of the 1934 Act and the 1934 Act Regulations and did not
      contain an untrue statement of a material fact or omit to state a
      material fact required to be stated therein or necessary to make the
      statements therein, in light of the circumstances in which they were
      made, not misleading.

           (ii) The Offerors have prepared and filed with the Commission a
      registration statement on Form S-2 (File Numbers 333-14507 and
      333-14507-01) for the registration of the Designated Preferred
      Securities, the Guarantee and $17,250,000 aggregate principal amount of
      Debentures under the Securities Act of 1933, as amended (the "1933 Act"),
      including the related prospectus subject to completion, and one or more
      amendments to such registration statement may have been so filed, in each
      case in conformity in all material respects with the requirements of the
      1933 Act, the rules and regulations promulgated thereunder (the "1933 Act
      Regulations") and the Trust Indenture Act of 1939, as amended (the "Trust
      Indenture Act") and the rules and regulations thereunder.  Copies of such
      registration statement, including any amendments thereto, each
      Preliminary Prospectus (as defined herein) contained therein and the
      exhibits, financial statements and schedules to such registration
      statement, as finally amended and revised, have heretofore been delivered
      by the Offerors to the Underwriter.  After the execution of this
      Agreement, the Offerors will file with the Commission (A) if such
      registration statement, as it may have been amended, has been declared by
      the Commission to be effective under the 1933 Act, a prospectus in the
      form most recently included in an amendment to such registration
      statement (or, if no such amendment shall have been filed, in such
      registration statement), with such changes or insertions as are required
      by Rule 430A of the 1933 Act Regulations ("Rule 430A") or permitted by
      Rule 424(b) of the 1933 Act Regulations ("Rule 424(b)") and as have been
      provided to and not objected to by the Underwriter prior to (or as are
      agreed to by the Underwriter subsequent to) the execution of this






                                      4

<PAGE>   5

      Agreement, or (B) if such registration statement, as it may have been
      amended, has not been declared by the Commission to be effective under
      the 1933 Act, an amendment to such registration statement, including a
      form of final prospectus, necessary to permit such registration statement
      to become effective, a copy of which amendment has been furnished to and
      not objected to by the Underwriter prior to (or is agreed to by the
      Underwriter subsequent to) the execution of this Agreement.  As used in
      this Agreement, the term "Registration Statement" means such registration
      statement, as amended at the time when it was or is declared effective
      under the 1933 Act, including (1) all financial schedules and exhibits
      thereto, (2) all documents (or portions thereof) incorporated by
      reference therein filed under the 1934 Act, and (3) any information
      omitted therefrom pursuant to Rule 430A and included in the Prospectus
      (as hereinafter defined); the term "Preliminary Prospectus" means each
      prospectus subject to completion filed with such registration statement
      or any amendment thereto including all documents (or portions thereof)
      incorporated by reference therein under the 1934 Act (including the
      prospectus subject to completion, if any, included in the Registration
      Statement and each prospectus filed pursuant to Rule 424(a) under the
      1933 Act); and the term "Prospectus" means the prospectus first filed
      with the Commission pursuant to Rule 424(b)(1) or (4) or, if no
      prospectus is required to be filed pursuant to Rule 424(b)(1) or (4), the
      prospectus included in the Registration Statement, in each case including
      the financial schedules and all documents (or portions thereof)
      incorporated by reference therein under the 1934 Act.  The date on which
      the Registration Statement becomes effective is hereinafter referred to
      as the "Effective Date."

           (iii) The documents incorporated by reference in the Preliminary
      Prospectus or Prospectus or from which information is so incorporated by
      reference, when they became effective or were filed with the Commission,
      as the case may be, complied in all material respects with the
      requirements of the 1934 Act and the 1934 Act Regulations, and when read
      together and with the other information in the Preliminary Prospectus or
      Prospectus, as the case may be, at the time the Registration Statement
      became or becomes effective and at the Closing Date and any Option
      Closing Date, did not or will not, as the case may be, contain an untrue
      statement of a material fact or omit to state a material fact required to
      be stated therein or necessary to make the statements therein, in light
      of the circumstances under which they were made, not misleading.

           (iv) No order preventing or suspending the use of any Prospectus
      (or, if the Prospectus is not in existence, the most recent Preliminary
      Prospectus) has been issued by the Commission, nor has the Commission, to
      the knowledge of the Offerors, threatened to issue such an order or
      instituted proceedings for that purpose.  Each Preliminary




                                      5

<PAGE>   6

      Prospectus, at the time of filing thereof, (A) complied in all material
      respects with the requirements of the 1933 Act and the 1933 Act
      Regulations and (B) did not contain an untrue statement of a material
      fact or omit to state any material fact required to be stated therein or
      necessary to make the statements therein, in light of the circumstances
      under which they were made, not misleading; provided, however, that this
      representation and warranty does not apply to statements or omissions
      made in reliance upon and in conformity with information furnished in
      writing to the Offerors by the Underwriter expressly for inclusion in the
      Prospectus beneath the heading "Underwriting" (such information referred
      to herein as the "Underwriter's Information").

           (v) At the Effective Date and at all times subsequent thereto, up to
      and including the Closing Date and, if applicable, the Option Closing
      Date, the Registration Statement and any post-effective amendment thereto
      (A) complied and will comply in all material respects with the
      requirements of the 1933 Act, the 1933 Act Regulations and the Trust
      Indenture Act (and the rules and regulations thereunder) and (B) did not
      and will not contain an untrue statement of a material fact or omit to
      state a material fact required to be stated therein or necessary to make
      the statements therein, not misleading.  At the Effective Date and at all
      times when the Prospectus is required to be delivered in connection with
      offers and sales of Designated Preferred Securities, including, without
      limitation, the Closing Date and, if applicable, the Option Closing Date,
      the Prospectus, as amended or supplemented, (A) complied and will comply
      in all material respects with the requirements of the 1933 Act and the
      1933 Act Regulations and the Trust Indenture Act (and the rules and
      regulations thereunder) and (B) did not contain and will not contain an
      untrue statement of a material fact or omit to state any material fact
      required to be stated therein or necessary to make the statements
      therein, in light of the circumstances under which they were made, not
      misleading; provided, however, that this representation and warranty does
      not apply to Underwriter's Information.

           (vi) (A)  The Company is duly organized, validly existing and in
      good standing under the laws of the State of Michigan, with full
      corporate and other power and authority to own, lease and operate its
      properties and conduct its business as described in and contemplated by
      the Registration Statement and the Prospectus (or, if the Prospectus is
      not in existence, the most recent Preliminary Prospectus) and as
      currently being conducted and is duly registered as a bank holding
      company under the Bank Holding Company Act of 1956, as amended (the "BHC
      Act").

                (B)  The Trust has been duly created and is validly existing 
      as a statutory business trust in good standing under the Delaware Business
      Trust Act with the power and authority (trust and other) to own its




                                      6

<PAGE>   7

      property and conduct its business as described in the Registration
      Statement and Prospectus, to issue and sell its common securities (the
      "Common Securities") to the Company pursuant to the Trust Agreement, to
      issue and sell the Designated Preferred Securities, to enter into and
      perform its obligations under this Agreement and to consummate the
      transactions herein contemplated; the Trust has no subsidiaries and is
      duly qualified to transact business; the Trust has conducted and will
      conduct no business other than the transactions contemplated by this
      Agreement and described in the Prospectus; the Trust is not a party to or
      bound by any agreement or instrument other than this Agreement, the Trust
      Agreement and the agreements and instruments contemplated by the Trust
      Agreement and described in the Prospectus; the Trust has no liabilities
      or obligations other than those arising out of the transactions
      contemplated by this Agreement and the Trust Agreement and described in
      the Prospectus; the Trust is not a party to or subject to any action,
      suit or proceeding of any nature; the Trust is not, and at the Closing
      Date or any Option Closing Date will not be, to the knowledge of the
      Offerors, classified as an association taxable as a corporation for
      United States federal income tax purposes; and the Trust is, and as of
      the Closing Date or any Option Closing Date will be, treated as a
      consolidated subsidiary of the Company pursuant to generally accepted
      accounting principles.

           (vii) The Company has five subsidiaries.  They are Independent Bank,
      Independent Bank West Michigan, Independent Bank South Michigan,
      Independent Bank East Michigan (the "Banks") and the Trust.  The Company
      does not own or control, directly or indirectly, more than 5% of any
      class of equity security of any corporation, association or other entity
      other than the Banks, Independent Title Services, Inc., IBC Financial
      Services, Inc. and the Trust.  Each of the Banks is a Michigan State Bank
      duly incorporated, validly existing and in good standing under the laws
      of Michigan.  Each Bank has full corporate and other power and authority
      to own, lease and operate its properties and to conduct its business as
      described in and contemplated by the Registration Statement and the
      Prospectus (or, if the Prospectus is not in existence, the most recent
      Preliminary Prospectus) and as currently being conducted.  The deposit
      accounts of each Bank are insured by the Bank Insurance Fund administered
      by the Federal Deposit Insurance Corporation (the "FDIC") up to the
      maximum amount provided by law, except to the extent the Prospectus
      discloses such deposit accounts are insured by the Savings Association
      Insurance Fund administered by the FDIC ("SAIF") and to such extent the
      deposit accounts are so insured up to the maximum amount provided by law;
      and no proceedings for the modification, termination or revocation of any
      such insurance are pending or, to the knowledge of the Offerors,
      threatened.

           (viii) The Company and each of the Banks is duly qualified to




                                      7

<PAGE>   8

      transact business as a foreign corporation and is in good standing in
      each other jurisdiction in which it owns or leases property or conducts
      its business so as to require such qualification and in which the failure
      to so qualify would, individually or in the aggregate, have a material
      adverse effect on the condition (financial or otherwise), earnings,
      business, prospects or results of operations of the Company and the Banks
      on a consolidated basis.  All of the issued and outstanding shares of
      capital stock of the Banks (A) have been duly authorized and are validly
      issued, (B) are fully paid and nonassessable except to the extent such
      shares may be deemed assessable under Section 201 of the Michigan Banking
      Code of 1969, as amended (M.C.L.A. Section 487.501), 12 U.S.C. Section 55
      or 12 U.S.C. Section 1831o, and (C) except as disclosed in the Prospectus
      (or, if the Prospectus is not in existence, the most recent Preliminary
      Prospectus), are directly owned by the Company free and clear of any
      security interest, mortgage, pledge, lien, encumbrance, restriction upon
      voting or transfer, preemptive rights, claim or equity.  Except as
      disclosed in the Prospectus, there are no outstanding rights, warrants or
      options to acquire or instruments convertible into or exchangeable for
      any capital stock or equity securities of the Offerors or the Banks.

           (ix)   The capital stock of the Company and the equity securities of
      the Trust conform to the description thereof contained in the Prospectus
      (or, if the Prospectus is not in existence, the most recent Preliminary
      Prospectus). The outstanding shares of capital stock and equity
      securities of each Offeror have been duly authorized and validly issued
      and are fully paid and nonassessable, and no such shares were issued in
      violation of the preemptive or similar rights of any security holder of
      an Offeror; no person has any preemptive or similar right to purchase any
      shares of capital stock or equity securities of the Offerors.  Except as
      disclosed in the Prospectus (or, if the Prospectus is not in existence,
      the most recent Preliminary Prospectus), there are no outstanding rights,
      options or warrants to acquire any securities of the Offerors other than
      options issued under the Company's Incentive Share Grant Plan, Stock
      Option Plans and Dividend Reinvestment Plan, and there are no outstanding
      securities convertible into or exchangeable for any such securities.

           (x)     (A) The Trust has all requisite power and authority to issue,
      sell and deliver the Designated Preferred Securities in accordance with
      and upon the terms and conditions set forth in this Agreement, the Trust
      Agreement, the Registration Statement and the Prospectus (or, if the
      Prospectus is not in existence, the most recent Preliminary Prospectus).
      All corporate and trust action required to be taken by the Offerors for
      the authorization, issuance, sale and delivery of the Designated
      Preferred Securities in accordance with such terms and conditions has
      been validly and sufficiently taken.  The Designated Preferred
      Securities, when delivered in accordance with this Agreement, will be
      duly and validly issued and




                                      8

<PAGE>   9

      outstanding, will be fully paid and nonassessable undivided beneficial
      interests in the assets of the Trust, will be entitled to the benefits of
      the Trust Agreement, will not be issued in violation of or subject to any
      preemptive or similar rights, and will conform to the description thereof
      in the Registration Statement and the Prospectus (or, if the Prospectus
      is not in existence, the most recent Preliminary Prospectus) and the
      Trust Agreement. None of the Designated Preferred Securities, immediately
      prior to delivery, will be subject to any security interest, lien,
      mortgage, pledge, encumbrance, restriction upon voting or transfer,
      preemptive rights, claim, equity or other defect.

                (B)  The Debentures have been duly and validly authorized, and,
      when duly and validly executed, authenticated and issued as provided
      in the Indenture and delivered to the Trust pursuant to the Trust
      Agreement, will constitute valid and legally binding obligations of the
      Company entitled to the benefits of the Indenture and will conform to the
      description thereof contained in the Prospectus.

                (C)  The Guarantee has been duly and validly authorized, and, 
      when duly and validly executed and delivered to the guarantee trustee for
      the benefit of the Trust, will constitute a valid and legally binding 
      obligation of the Company and will conform to the description thereof 
      contained in the Prospectus.

           (xi) The Offerors and the Banks have complied in all material
      respects with all federal, state and local statutes, regulations,
      ordinances and rules applicable to the ownership and operation of their
      properties or the conduct of their businesses as described in and
      contemplated by the Registration Statement and the Prospectus (or, if the
      Prospectus is not in existence, the most recent Preliminary Prospectus)
      and as currently being conducted.

           (xii) The Offerors and the Banks have all material permits,
      easements, consents, licenses, franchises and other governmental and
      regulatory authorizations from all appropriate federal, state, local or
      other public authorities ("Permits") as are necessary to own and lease
      their properties and conduct their businesses in the manner described in
      and contemplated by the Registration Statement and the Prospectus (or, if
      the Prospectus is not in existence, the most recent Preliminary
      Prospectus) and as currently being conducted in all material respects.
      All such Permits are in full force and effect and each of the Offerors
      and the Banks are in all material respects complying therewith, and no
      event has occurred that allows, or after notice or lapse of time would
      allow, revocation or termination thereof or will result in any other
      material impairment of the rights of the holder of any such Permit,
      subject in each case to such qualification as may be adequately





                                      9

<PAGE>   10

      disclosed in the Prospectus (or, if the Prospectus is not in existence,
      the most recent Preliminary Prospectus).  Such Permits contain no
      restrictions that would materially impair the ability of the Company or
      the Banks to conduct their businesses in the manner consistent with their
      past practices.  Neither the Offerors nor the Banks have received notice
      or otherwise has knowledge of any proceeding or action relating to the
      revocation or modification of any such Permit.

           (xiii) Neither of the Offerors nor any of the Banks is in breach or
      violation of their corporate charter, by-laws or other governing
      documents (including without limitation, the Trust Agreement).  Neither
      of the Offerors nor  any of the Banks are, and to the knowledge of the
      Offerors no other party is, in violation, breach or default (with or
      without notice or lapse of time or both) in the performance or observance
      of any term, covenant, agreement, obligation, representation, warranty or
      condition contained in (A) any contract, indenture, mortgage, deed of
      trust, loan or credit agreement, note, lease, franchise, license, Permit
      or any other agreement or instrument to which it is a party or by which
      it or any of its properties may be bound, which such breach, violation or
      default could have material adverse consequences to the Offerors and the
      Banks on a consolidated basis, and to the knowledge of the Offerors, no
      other party has asserted that the Offerors or any of the Banks is in such
      violation, breach or default (provided that the foregoing shall not apply
      to defaults by borrowers from the Banks), or (B) except as disclosed in
      the Prospectus (or, if the Prospectus is not in existence, the most
      recent Preliminary Prospectus), any order, decree, judgment, rule or
      regulation of any court, arbitrator, government, or governmental agency
      or instrumentality, domestic or foreign, having jurisdiction over the
      Offerors or the Banks or any of their respective properties the breach,
      violation or default of which could have a material adverse effect on the
      condition, financial or otherwise, earnings, affairs, business,
      prospects, or results of operations of the Offerors and the Banks on a
      consolidated basis.

           (xiv) The execution, delivery and performance of this Agreement and
      the consummation of the transactions contemplated by this Agreement, the
      Trust Agreement, the Registration Statement and the Prospectus (or, if
      the Prospectus in not in existence, the most recent Preliminary
      Prospectus) do not and will not conflict with, result in the creation or
      imposition of any material lien, claim, charge, encumbrance or
      restriction upon any property or assets of the Offerors or the Banks or
      the Designated Preferred Securities pursuant to, constitute a breach or
      violation of, or constitute a default under, with or without notice or
      lapse of time or both, any of the terms, provisions or conditions of the
      charter or by-laws of the Company or the Banks, the Trust Agreement, the
      Guarantee, the Indenture, any contract, indenture, mortgage, deed of
      trust, loan or credit




                                     10

<PAGE>   11

      agreement, note, lease, franchise, license, Permit or any other agreement
      or instrument to which the Offerors or the Banks is a party or by which
      any of them or any of their respective properties may be bound or any
      order, decree, judgment, rule or regulation of any court, arbitrator,
      government, or governmental agency or instrumentality, domestic or
      foreign, having jurisdiction over the Offerors or the Banks or any of
      their respective properties which conflict, creation, imposition, breach,
      violation or default would have either singly or in the aggregate a
      material adverse effect on the condition, financial or otherwise,
      earnings, affairs, business, prospects or results of operations of the
      Offerors and the Banks on a consolidated basis.  No authorization,
      approval, consent or order of, or filing, registration or qualification
      with, any person (including, without limitation, any court, governmental
      body or authority) is required in connection with the transactions
      contemplated by this Agreement, the Trust Agreement, the Indenture, the
      Guarantee, the Registration Statement and the Prospectus (or such
      Preliminary Prospectus), except such as may be required under the 1933
      Act, and such as may be required under state securities laws in
      connection with the purchase and distribution of the Designated Preferred
      Securities by the Underwriter.  No authorization, approval, consent or
      order of or filing, registration or qualification with, any person
      (including, without limitation, any court, governmental body or
      authority) is required in connection with the transactions contemplated
      by this Agreement, the Trust Agreement, the Indenture, the Guarantee, the
      Registration Statement and the Prospectus, except such as have been
      obtained under the 1933 Act, and such as may be required under state
      securities laws or Interpretations or Rules of the National Association
      of Securities Dealers, Inc. ("NASD") in connection with the purchase and
      distribution of the Designated Preferred Securities by the Underwriter.

           (xv) The Offerors have all requisite corporate power and authority
      to enter into this Agreement and this Agreement has been duly and validly
      authorized, executed and delivered by the Offerors and constitutes the
      legal, valid and binding agreement of the Offerors, enforceable against
      the Offerors in accordance with its terms, except as the enforcement
      thereof may be limited by general principles of equity and by bankruptcy
      or other laws relating to or affecting creditors' rights generally and
      except as any indemnification or contribution provisions thereof may be
      limited under applicable securities laws.  Each of the Indenture, the
      Trust Agreement, the Guarantee and the Agreement as to Expenses and
      Liabilities (the "Expense Agreement") has been duly authorized by the
      Company, and, when executed and delivered by the Company on the Closing
      Date, each of said agreements will constitute a valid and legally binding
      obligation of the Company and will be enforceable against the Company in
      accordance with its terms, except as the enforcement thereof may be
      limited by general principles of equity and by bankruptcy or other laws
      relating to or affecting creditors' rights generally




                                     11

<PAGE>   12

      and except as any indemnification or contribution provisions thereof may
      be limited under applicable securities laws.  Each of the Indenture, the
      Trust Agreement and the Guarantee has been duly qualified under the Trust
      Indenture Act and will conform to the description thereof contained in
      the Prospectus.

           (xvi) The Company and the Banks have good and marketable title in
      fee simple to all real property and good title to all personal property
      owned by them and material to their business, in each case free and clear
      of all security interests, liens, mortgages, pledges, encumbrances,
      restrictions, claims, equities and other defects except such as are
      referred to in the Prospectus (or, if the Prospectus is not in existence,
      the most recent Preliminary Prospectus) or such as do not materially
      affect the value of such property in the aggregate and do not materially
      interfere with the use made or proposed to be made of such property; and
      all of the leases under which the Company or the Banks hold real or
      personal property are valid, existing and enforceable leases and in full
      force and effect with such exceptions as are not material and do not
      materially interfere with the use made or proposed to be made of such
      real or personal property, and neither the Company nor the Banks is in
      default in any material respect of any of the terms or provisions of any
      leases.

           (xvii) KPMG Peat Marwick LLP, who have certified certain of the
      consolidated financial statements of the Company and the Banks including
      the notes thereto, included in the Registration Statement and Prospectus,
      are independent public accountants with respect to the Offerors and the
      Banks, as required by the 1933 Act and the 1933 Act Regulations.

           (xviii) The consolidated financial statements including the notes
      thereto, included in the Registration Statement and the Prospectus (or,
      if the Prospectus is not in existence, the most recent Preliminary
      Prospectus) with respect to the Company and the Banks comply in all
      material respects with the 1933 Act and the 1933 Act Regulations and
      present fairly the consolidated financial position of the Company and the
      Banks as of the dates indicated and the consolidated results of
      operations, cash flows and shareholders' equity of the Company and the
      Banks for the periods specified and have been prepared in conformity with
      generally accepted accounting principles applied on a consistent basis.
      The selected and summary consolidated financial data concerning the
      Offerors and the Banks included in the Registration Statement and the
      Prospectus (or such Preliminary Prospectus) comply in all material
      respects with the 1933 Act and the 1933 Act Regulations, present fairly
      the information set forth therein, and have been compiled on a basis
      consistent with that of the consolidated financial statements of the
      Offerors and the Banks in the Registration Statement and the Prospectus
      (or such Preliminary Prospectus).  The other financial,





                                     12

<PAGE>   13

      statistical and numerical information included in the Registration
      Statement and the Prospectus (or such Preliminary Prospectus) comply in
      all material respects with the 1933 Act and the 1933 Act Regulations,
      present fairly the information shown therein, and to the extent
      applicable have been compiled on a basis consistent with the consolidated
      financial statements of the Company and the Banks included in the
      Registration Statement and the Prospectus (or such Preliminary
      Prospectus).

           (xix) Since the respective dates as of which information is given in
      the Registration Statement and the Prospectus (or, if the Prospectus is
      not in existence, the most recent Preliminary Prospectus), except as
      otherwise stated therein:

                 (A) neither of the Offerors nor any of the Banks have
            sustained any loss or interference with its business from fire,
            explosion, flood or other calamity, whether or not covered by
            insurance, or from any labor dispute or court or governmental
            action, order or decree which is material to the condition
            (financial or otherwise), earnings, business, prospects or results
            of operations of the Offerors and the Banks on a consolidated
            basis;

                 (B) there has not been any material adverse change in, or any
            development which is reasonably likely to have a material adverse
            effect on, the condition (financial or otherwise), earnings,
            business, prospects or results of operations of the Offerors and
            the Banks on a consolidated basis, whether or not arising in the
            ordinary course of business;

                 (C) neither of the Offerors nor any of the Banks have incurred
            any liabilities or obligations, direct or contingent, or entered
            into any material transactions, other than in the ordinary course
            of business which is material to the condition (financial or
            otherwise), earnings, business, prospects or results of operations
            of the Offerors and the Banks on a consolidated basis;

                 (D) other than the Company's dividend declared in the fourth
            quarter on November 19, 1996 and its dividend paid in the fourth
            quarter on October 31, 1996 to the holders of its common
            securities, neither of the Offerors have declared or paid any
            dividend, and neither of the Offerors nor any of the Banks have
            become delinquent in the payment of principal or interest on any
            outstanding borrowings; and

                 (E) there has not been any change in the capital stock (except
            for shares of the Company's common stock issued under its Dividend
            Reinvestment Plan and the exercise of employee stock





                                     13

<PAGE>   14

            options issued under the Company's Incentive Share Grant Plan and
            Stock Option Plans, and disclosed as outstanding), equity
            securities, long-term debt, obligations under capital leases or,
            other than in the ordinary course of business and other than the
            Company's short-term indebtedness to Northern Trust Company not to
            exceed $15.5 million (the "Bridge Loan"), short-term borrowings of
            the Offerors or the Banks which is material to the condition
            (financial or otherwise), earnings, business, prospects or results
            of the operations of the Offerors and the Banks on a consolidated
            basis.

           (xx) Except as set forth in the Registration Statement and the
      Prospectus (or, if the Prospectus is not in existence, the most recent
      Preliminary Prospectus), no charge, investigation, action, suit or
      proceeding is pending or, to the knowledge of the Offerors, threatened,
      against or affecting the Offerors or the Banks or any of their respective
      properties before or by any court or any regulatory, administrative or
      governmental official, commission, board, agency or other authority or
      body, or any arbitrator, wherein an unfavorable decision, ruling or
      finding could have a material adverse effect on the consummation of this
      Agreement or the transactions contemplated herein or the condition
      (financial or otherwise), earnings, affairs, business, prospects or
      results of operations of the Offerors and the Banks on a consolidated
      basis or which is required to be disclosed in the Registration Statement
      or the Prospectus (or such Preliminary Prospectus) and is not so
      disclosed.

           (xxi) There are no contracts or other documents required to be filed
      as exhibits to the Registration Statement by the 1933 Act or the 1933 Act
      Regulations or the Trust Indenture Act (or any rules or regulations
      thereunder) which have not been filed as exhibits or incorporated by
      reference to the Registration Statement, or that are required to be
      summarized in the Prospectus (or, if the Prospectus is not in existence,
      the most recent Preliminary Prospectus) that are not so summarized.

           (xxii) Neither of the Offerors has taken, directly or indirectly,
      any action designed to result in or which has constituted or which might
      reasonably be expected to cause or result in stabilization or
      manipulation of the price of any security of the Offerors to facilitate
      the sale or resale of the Designated Preferred Securities, and neither of
      the Offerors is aware of any such action taken or to be taken by any
      affiliate of the Offerors.

           (xxiii) The Offerors and the Banks own, or possess adequate rights
      to use, all patents, copyrights, trademarks, service marks, trade names
      and other rights necessary to conduct the businesses now conducted by
      them in all material respects or as described in the Prospectus (or, if
      the Prospectus is not in existence, the most recent Preliminary
      Prospectus) and




                                     14

<PAGE>   15

      neither the Offerors nor the Banks have received any notice of
      infringement or conflict with asserted rights of others with respect to
      any patents, copyrights, trademarks, service marks, trade names or other
      rights which, individually or in the aggregate, if the subject of an
      unfavorable decision, ruling or finding, would have a material adverse
      effect on the condition (financial or otherwise), earnings, affairs,
      business, prospects or results of operations of the Offerors and the
      Banks on a consolidated basis, and the Offerors do not know of any basis
      for any such infringement or conflict.

           (xxiv) Except as adequately disclosed in the Prospectus (or, if the
      Prospectus is not in existence, the most recent Preliminary Prospectus),
      no labor dispute involving the Company or the Banks exists or, to the
      knowledge of the Offerors, is imminent which might be expected to have a
      material adverse effect on the condition (financial or otherwise),
      earnings, affairs, business, prospects or results of operations of the
      Offerors and the Banks on a consolidated basis or which is required to be
      disclosed in the Prospectus (or, if the Prospectus is not in existence,
      the most recent Preliminary Prospectus).  Neither the Company nor the
      Banks have received notice of any existing or threatened labor dispute by
      the employees of any of its principal suppliers, customers or contractors
      which might be expected to have a material adverse effect on the
      condition (financial or otherwise), earnings, affairs, business,
      prospects or results of operations of the Company and the Banks on a
      consolidated basis.

           (xxv) The Offerors and the Banks have timely and properly prepared
      and filed all necessary federal, state, local and foreign tax returns
      which are required to be filed and have paid all taxes shown as due
      thereon and have paid all other taxes and assessments to the extent that
      the same shall have become due, except such as are being contested in
      good faith or where the failure to so timely and properly prepare and
      file would not have a material adverse effect on the condition (financial
      or otherwise), earnings, affairs, business, prospects or results of
      operations of the Offerors and the Banks on a consolidated basis.  The
      Offerors have no knowledge of any tax deficiency which has been or might
      be assessed against the Offerors or the Banks which, if the subject of an
      unfavorable decision, ruling or finding, would have a material adverse
      effect on the condition (financial or otherwise), earnings, affairs,
      business, prospects or results of operations of the Offerors and the
      Banks on a consolidated basis.

           (xxvi) Each of the material contracts, agreements and instruments
      described or referred to in the Registration Statement or the Prospectus
      (or, if the Prospectus is not in existence, the most recent Preliminary
      Prospectus) and each contract, agreement and instrument filed as an
      exhibit to the Registration Statement is in full force and effect and is
      the legal, valid and binding agreement of the Offerors or the Banks,
      enforceable





                                     15

<PAGE>   16

      in accordance with its terms, except as the enforcement thereof may be
      limited by general principles of equity and by bankruptcy or other laws
      relating to or affecting creditors' rights generally.  Except as
      disclosed in the Prospectus (or such Preliminary Prospectus), to the
      knowledge of the Offerors, no other party to any such agreement is (with
      or without notice or lapse of time or both) in breach or default in any
      material respect thereunder.

           (xxvii) No relationship, direct or indirect, exists between or among
      the Offerors or the Banks, on the one hand, and the directors, officers,
      trustees, shareholders, customers or suppliers of the Offerors or the
      Banks, on the other hand, which is required to be described in the
      Registration Statement and the Prospectus (or, if the Prospectus is not
      in existence, the most recent Preliminary Prospectus) which is not
      adequately described therein.

           (xxviii) No person has the right to request or require the Offerors
      or the Banks to register any securities for offering and sale under the
      1933 Act by reason of the filing of the Registration Statement with the
      Commission or the issuance and sale of the Designated Preferred
      Securities except as adequately disclosed in the Registration Statement
      and the Prospectus (or, if the Prospectus is not in existence, the most
      recent Preliminary Prospectus).

           (xxix) The Designated Preferred Securities have been approved for
      quotation on the Nasdaq National Market subject to official notice of
      issuance.

           (xxx) Except as described in the Prospectus (or, if the Prospectus
      is not in existence, the most recent Preliminary Prospectus), there are
      no contractual encumbrances or restrictions or material legal
      restrictions, on the ability of the Banks (A) to pay dividends or make
      any other distributions on its capital stock or to pay any indebtedness
      owed to the Company, (B) to make any loans or advances to, or investments
      in, the Company or (C) to transfer any of its property or assets to the
      Company.

           (xxxi) Neither of the Offerors is an "investment company" within the
      meaning of the Investment Company Act of 1940, as amended (the
      "Investment Company Act").

           (xxxii) The Offerors have not distributed and will not distribute
      prior to the Closing Date any prospectus in connection with the Offering,
      other than a Preliminary Prospectus, the Prospectus, the Registration
      Statement and the other materials permitted by the 1933 Act and the 1933
      Act Regulations and reviewed by the Underwriter.





                                     16

<PAGE>   17


     3. OFFERING BY THE UNDERWRITER.  After the Registration Statement becomes
effective or, if the Registration Statement is already effective, after this
Agreement becomes effective, the Underwriter proposes to offer the Firm
Preferred Securities for sale to the public upon the terms and conditions set
forth in the Prospectus.  The Underwriter may from time to time thereafter
reduce the public offering price and change the other selling terms, provided
the proceeds to the Trust shall not be reduced as a result of such reduction or
change.

     The Underwriter may reserve and sell such of the Designated Preferred
Securities purchased by the Underwriter as the Underwriter may elect to dealers
chosen by it (the "Selected Dealers") at the public offering price set forth in
the Prospectus less the applicable Selected Dealers' concessions set forth
therein, for re-offering by Selected Dealers to the public at the public
offering price.  The Underwriter may allow, and Selected Dealers may re-allow,
a concession set forth in the Prospectus to certain other brokers and dealers.

     4. CERTAIN COVENANTS OF THE OFFERORS.    The Offerors jointly and
severally covenant with the Underwriter as follows:

          (a) The Offerors shall use their best efforts to cause the 
Registration Statement and any amendments thereto, if not effective at the time
of execution of this Agreement, to become effective as promptly as possible. 
If the Registration Statement has become or becomes effective pursuant to Rule
430A and information has been omitted therefrom in reliance on Rule 430A, then,
the Offerors will prepare and file in accordance with Rule 430A and Rule 424(b)
copies of the Prospectus or, if required by Rule 430A, a post-effective
amendment to the Registration Statement (including the Prospectus) containing
all information so omitted and will provide evidence satisfactory to the
Underwriter of such timely filing.

          (b)  The Offerors shall notify the Underwriter immediately, and 
confirm such notice in writing:

           (i) when the Registration Statement, or any post-effective amendment
      to the Registration Statement, has become effective, or when the
      Prospectus or any supplement to the Prospectus or any amended Prospectus
      has been filed;

           (ii) of the receipt of any comments or requests from the Commission;

           (iii) of any request of the Commission to amend or supplement the
      Registration Statement, any Preliminary Prospectus or the Prospectus or
      for additional information; and




                                     17

<PAGE>   18



           (iv) of the issuance by the Commission or any state or other
      regulatory body of any stop order or other order suspending the
      effectiveness of the Registration Statement, preventing or suspending the
      use of any Preliminary Prospectus or the Prospectus, or suspending the
      qualification of any of the Designated Preferred Securities for offering
      or sale in any jurisdiction or the institution or threat of institution
      of any proceedings for any of such purposes.  The Offerors shall use
      their best efforts to prevent the issuance of any such stop order or of
      any other such order and if any such order is issued, to cause such order
      to be withdrawn or lifted as soon as possible.

      (c)  The Offerors shall furnish to the Underwriter, from time to time
without charge, as soon as available, as many copies as the Underwriter may
reasonably request of (i) the registration statement as originally filed and of
all amendments thereto, in executed form, including exhibits, whether filed
before or after the Registration Statement becomes effective, (ii) all exhibits
and documents incorporated therein or filed therewith, (iii) all consents and
certificates of experts in executed form, (iv) each Preliminary Prospectus and
all amendments and supplements thereto, and (v) the Prospectus, and all
amendments and supplements thereto.

        (d) During the time when a prospectus is required to be delivered under
the 1933 Act, the Offerors shall comply to the best of their ability with the
1933 Act and the 1933 Act Regulations and the 1934 Act and the 1934 Act
Regulations so as to permit the completion of the distribution of the
Designated Preferred Securities as contemplated herein and in the Trust
Agreement and the Prospectus.  The Offerors shall not file any amendment to the
registration statement as originally filed or to the Registration Statement and
shall not file any amendment thereto or make any amendment or supplement to any
Preliminary Prospectus or to the Prospectus of which the Underwriter shall not
previously have been advised in writing and provided a copy a reasonable time
prior to the proposed filings thereof or to which the Underwriter or the
Underwriter's counsel shall reasonably object.  If it is necessary, in the
Company's reasonable opinion or in the reasonable opinion of the Company's
counsel to amend or supplement the Registration Statement or the Prospectus in
connection with the distribution of the Designated Preferred Securities, the
Offerors shall forthwith amend or supplement the Registration Statement or the
Prospectus, as the case may be, by preparing and filing with the Commission
(provided the Underwriter or Underwriter's counsel does not reasonably object),
and furnishing to the Underwriter, such number of copies as the Underwriter may
reasonably request of an amendment or amendments of, or a supplement or
supplements to, the Registration Statement or the Prospectus, as the case may
be (in form and substance reasonably satisfactory to the Underwriter and the
Underwriter's counsel).  If any event shall occur as a result of which it is
necessary to amend or supplement the Prospectus to correct an untrue statement
of a material fact or to include a material fact necessary to make the
statements




                                     18

<PAGE>   19

therein, in light of the circumstances under which they were made, not
misleading, or if for any reason it is necessary at any time to amend or
supplement the Prospectus to comply with the 1933 Act and the 1933 Act
Regulations, the Offerors shall, subject to the second sentence of this
subsection (d), forthwith amend or supplement the Prospectus by preparing and
filing with the Commission, and furnishing to the Underwriter, such number of
copies as the Underwriter may reasonably request of an amendment or amendments
of, or a supplement or supplements to, the Prospectus (in form and substance
satisfactory to the Underwriter and the Underwriter's counsel) so that, as so
amended or supplemented, the Prospectus shall not contain an untrue statement
of a material fact or omit to state a material fact necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading.

     (e) The Offerors shall cooperate with the Underwriter and the
Underwriter's counsel in order to qualify the Designated Preferred Securities
for offering and sale under the securities or blue sky laws of such
jurisdictions as the Underwriter may reasonably request and shall continue such
qualifications in effect so long as may be advisable for distribution of the
Designated Preferred Securities; provided, however, that the Offerors shall not
be required to qualify to do business as a foreign corporation or file a
general consent to service of process in any jurisdiction in connection with
the foregoing.  The Offerors shall file such statements and reports as may be
required by the laws of each jurisdiction in which the Designated Preferred
Securities have been qualified as above.  The Offerors will notify the
Underwriter immediately of, and confirm in writing, the suspension of
qualification of the Designated Preferred Securities or threat thereof in any
jurisdiction.

     (f) The Offerors shall make generally available to their security holders
in the manner contemplated by Rule 158 of the 1933 Act Regulations and furnish
to the Underwriter as soon as practicable, but in any event not later than 16
months after the Effective Date, a consolidated earnings statement of the
Offerors conforming with the requirements of Section 11(a) of the 1933 Act and
Rule 158.

     (g) The Offerors shall use the net proceeds from the sale of the
Designated Preferred Securities to be sold by the Trust hereunder in the manner
specified in the Prospectus under the caption "Use of Proceeds."

     (h) For five years from the Effective Date, the Offerors shall furnish to
the Underwriter copies of all reports and communications (financial or
otherwise) furnished by the Offerors to the holders of the Designated Preferred
Securities as a class, copies of all reports and financial statements filed
with or furnished to the Commission (other than portions for which confidential
treatment has been obtained from the Commission) or with any national
securities exchange or the Nasdaq National Market as the Underwriter may
reasonably request, other than such documents, reports and information for
which the Offerors has the legal





                                     19

<PAGE>   20

obligation not to reveal to the Underwriter.

     (i) For a period of 180 days from the date hereof, the Offerors shall not,
directly or indirectly, offer for sale, sell or agree to sell or otherwise
dispose of any Designated Preferred Securities, any other beneficial interests
in the assets of the Trust or any securities of the Trust or the Company that
are substantially similar to the Designated Preferred Securities, including any
guarantee of such beneficial interests or substantially similar securities, or
securities convertible into or exchangeable for or that represent the right to
receive any such beneficial interest or substantially similar securities,
without the Underwriter's prior written consent.

     (j) The Offerors shall use their best efforts to cause the Designated
Preferred Securities to become quoted on the Nasdaq National Market, or in lieu
thereof a national securities exchange, and to remain so quoted for at least
five years from the Effective Date or for such shorter period as may be
specified in a written consent of the Underwriter, provided this shall not
prevent the Company from redeeming the Designated Preferred Securities pursuant
to the terms of the Trust Agreement.  If the Designated Preferred Securities
are exchanged for Debentures, the Company will use its best efforts to have the
Debentures promptly listed on the Nasdaq National Market or other organization
on which the Designated Preferred Securities are then listed, and to have the
Debentures promptly registered under the Exchange Act.

     (k) Subsequent to the date of this Agreement and through the date which is
the later of (i) the day following the date on which the Underwriter's option
to purchase the Option Preferred Securities shall expire or (ii) the day
following the Option Closing Date with respect to any Option Preferred
Securities that the Underwriter shall elect to purchase, except as described in
or contemplated by the Prospectus, neither the Offerors nor the Banks shall
take any action (or refrain from taking any action) which will result in the
Offerors or the Banks incurring any material liability or obligation, direct or
contingent, or enter into any material transaction, except in the ordinary
course of business, and there will not be any material change in the financial
position, capital stock, or any material increase in long-term debt,
obligations under capital leases or short-term borrowings of the Offerors and
the Banks on a consolidated basis.

     (l) The Offerors shall not, for a period of 180 days after the date
hereof, without the prior written consent of the Underwriter, purchase, redeem
or call for redemption, or prepay or give notice of prepayment (or announce any
redemption or call for redemption, or any repayment or notice of prepayment) of
any of the Offerors' securities, provided that the foregoing shall not prevent
(i) the Company from redeeming its common stock from time to time or (ii) an
employee or director from delivering the Company's securities in payment of the
exercise price of options issued under the Company's Incentive Share Grant Plan
and Stock Option Plans.





                                     20

<PAGE>   21



     (m) The Offerors shall not take, directly or indirectly, any action
designed to result in or which has constituted or which might reasonably be
expected to cause or result in stabilization or manipulation of the price of
any security of the Offerors to facilitate the sale or resale of the Designated
Preferred Securities and the Offerors are not aware of any such action taken or
to be taken by any affiliate of the Offerors.

     (n) Prior to the Closing Date (and, if applicable, the Option Closing
Date), the Offerors will not issue any press release or other communication
directly or indirectly or hold any press conference with respect to the
Offerors, the Banks or the offering of the Designated Preferred Securities (the
"Offering") without the Underwriter's prior written consent which will not be
unreasonably withheld.

     5. PAYMENT OF EXPENSES.  Whether or not this Agreement is terminated or
the sale of the Designated Preferred Securities to the Underwriter is
consummated, the Company covenants and agrees that it will pay or cause to be
paid (directly or by reimbursement) all costs and expenses incident to the
performance of the obligations of the Offerors under this Agreement, including:

     (a) the preparation, printing, filing, delivery and shipping of the
initial registration statement, the Preliminary Prospectus or Prospectuses, the
Registration Statement and the Prospectus and any amendments or supplements
thereto, and the printing, delivery and shipping of this Agreement and any
other underwriting documents (including, without limitation, selected dealers
agreements), the certificates for the Designated Preferred Securities and the
Preliminary and Final Blue Sky Memoranda and any legal investment surveys and
any supplements thereto;

     (b) all fees, expenses and disbursements of the Offerors' counsel and
accountants;

     (c) all reasonable fees and expenses incurred in connection with the
qualification of the Designated Preferred Securities, Debentures and the
Guarantee under the securities or blue sky laws of such jurisdictions as the
Underwriter may request, including all filing fees and reasonable fees and
disbursements of counsel for the Underwriter in connection therewith,
including, without limitation, in connection with the preparation of the
Preliminary and Final Blue Sky Memoranda and any legal investment surveys and
any supplements thereto;

     (d) all fees and expenses incurred in connection with filings made with
the NASD;

     (e) any applicable fees and other expenses incurred in connection with the
listing of the Designated Preferred Securities and, if applicable, the





                                     21

<PAGE>   22

Guarantee and the Debentures on the Nasdaq National Market;

     (f) the cost of furnishing to the Underwriter copies of the initial
registration statements, any Preliminary Prospectus, the Registration Statement
and the Prospectus and all amendments or supplements thereto;

     (g) the costs and charges of any transfer agent or registrar and the fees
and disbursements of counsel for any transfer agent or registrar;

     (h) all costs and expenses (including stock transfer taxes) incurred in
connection with the printing, issuance and delivery of the Designated Preferred
Securities to the Underwriter;

     (i) all expenses incident to the preparation, execution and delivery of
the Trust Agreements, the Indenture and the Guarantee; and

     (j) all other costs and expenses incident to the performance of the
obligations of the Company hereunder and under the Trust Agreement that are not
otherwise specifically provided for in this Section 5.

     If the sale of Designated Preferred Securities contemplated by this
Agreement is not completed due to the termination of this Agreement by the
Underwriter under Subsections 8(a), (b) or (c) hereof, the Company will pay the
Underwriter its accountable out-of-pocket expenses in connection herewith or in
contemplation of the performance of the Underwriter's obligations hereunder,
including without limitation travel expenses, reasonable fees, expenses and
disbursements of counsel or other out-of-pocket expenses incurred by the
Underwriter in connection with any discussion of the Offering or the contents
of the Registration Statement, any investigation of the Offerors and the Banks,
or any preparation for the marketing, purchase, sale or delivery of the
Designated Preferred Securities, in each case following presentation of
reasonably detailed invoices therefor; provided that this paragraph shall not
apply if the Underwriter has materially breached this Agreement.

     If the sale of Designated Preferred Securities contemplated by this
Agreement is completed, the Company shall not be responsible for payment of
fees or disbursements of counsel for the Underwriter other than in accordance
with paragraph (c) above, or for the reimbursement of any expenses of the
Underwriter, including but not limited to any advertising expenses related to
any offers made by the Underwriter.

     6. CONDITIONS OF THE UNDERWRITER'S OBLIGATIONS.  The obligations of the
Underwriter to purchase and pay for the Firm Preferred Securities and,
following exercise of the option granted by the Offerors in Section 1 of this
Agreement, the Option Preferred Securities, are subject, in the Underwriter's
sole discretion, to the





                                     22

<PAGE>   23

accuracy of and compliance with the representations and warranties and
agreements of the Offerors herein as of the date hereof and as of the Closing
Date (or in the case of the Option Preferred Securities, if any, as of the
Option Closing Date), to the accuracy of the written statements of the Offerors
made pursuant to the provisions hereof, to the performance by the Offerors of
their covenants and obligations hereunder and to the following additional
conditions:

     (a) If the Registration Statement or any amendment thereto filed prior to
the Closing Date has not been declared effective prior to the time of execution
hereof, the Registration Statement shall become effective not later than 10:00
a.m., St. Louis time, on the first business day following the time of execution
of this Agreement, or at such later time and date as the Underwriter may agree
to in writing.  If required, the Prospectus and any amendment or supplement
thereto shall have been timely filed in accordance with Rule 424(b) and Rule
430A under the 1933 Act and Section 4(a) hereof.  No stop order suspending the
effectiveness of the Registration Statement or any amendment or supplement
thereto shall have been issued under the 1933 Act or any applicable state
securities laws and no proceedings for that purpose shall have been instituted
or shall be pending, or, to the knowledge of the Offerors the Underwriter,
shall be contemplated by the Commission or any state authority.  Any request on
the part of the Commission or any state authority for additional information
(to be included in the Registration Statement or Prospectus or otherwise) shall
have been disclosed to the Underwriter and complied with to the Underwriter's
satisfaction and to the satisfaction of the Underwriter's counsel.

     (b) The Underwriter shall not have advised the Company at or before the
Closing Date (and, if applicable, the Option Closing Date) that the
Registration Statement or any post-effective amendment thereto, or the
Prospectus or any amendment or supplement thereto, contains an untrue statement
of a fact which, in the Underwriter's opinion, is material or omits to state a
fact which, in the Underwriter's opinion, is material and is required to be
stated therein or is necessary to make statements therein (in the case of the
Prospectus or any amendment or supplement thereto, in light of the
circumstances under which they were made) not misleading.

     (c) All corporate proceedings and other legal matters incident to the
authorization, form and validity of this Agreement, the Trust Agreement, and
the Designated Preferred Securities, and the authorization and form of the
Registration Statement and Prospectus, other than financial statements and
other financial data, and all other legal matters relating to this Agreement
and the transactions contemplated hereby or by the Trust Agreement shall be
satisfactory in all respects to the Underwriter's counsel, and the Offerors and
the Banks shall have furnished to such counsel all documents and information
relating thereto that they may reasonably request to enable them to pass upon
such matters.





                                     23

<PAGE>   24


     (d) Varnum, Riddering, Schmidt & Howlett LLP, counsel for the Offerors,
shall have furnished to the Underwriter their signed opinion, dated the Closing
Date or the Option Closing Date, as the case may be, in form and substance
satisfactory to the Underwriter's counsel, to the effect that:

           (i) The Company has been duly incorporated and is validly existing
      and in good standing under the laws of the State of Michigan, and is duly
      registered as a bank holding company under the BHC Act.  Each of the
      Banks is a state banking corporation duly incorporated, validly existing
      and in good standing under the laws of Michigan.  Each of the Company and
      the Banks has full corporate power and authority to own or lease its
      properties and to conduct its business as such business is described in
      the Prospectus and is currently conducted in all material respects.  All
      outstanding shares of capital stock of the Banks have been duly
      authorized and validly issued and are fully paid and nonassessable except
      to the extent such shares may be deemed assessable under Section 201 of
      the Michigan Banking Code of 1969, as amended (M.C.L.A. Section 487.501)
      or 12 U.S.C. Section 55 or 12 U.S.C. Section 1831o and, to the best of
      such counsel's knowledge, except as disclosed in the Prospectus, there
      are no outstanding rights, options or warrants to purchase any such
      shares or securities convertible into or exchangeable for any such
      shares.

           (ii) The capital stock, Debentures and Guarantee of the Company and
      the equity securities of the Trust conform to the description thereof
      contained in the Prospectus in all material respects.  The capital stock
      of the Company authorized as of September 30, 1996 is as set forth under
      the caption "Capitalization" in the Prospectus, and all issued and
      outstanding shares of the Company's capital stock have been duly
      authorized and validly issued, and are fully paid and nonassessable.  The
      form of certificates to evidence the Designated Preferred Securities has
      been approved by the Trust and is in due and proper form and complies
      with all applicable requirements.  To the best of such counsel's
      knowledge, there are no outstanding rights, options or warrants to
      purchase, no other outstanding securities convertible into or
      exchangeable for, and no commitments, plans or arrangements to issue, any
      shares of capital stock of the Company or equity securities of the Trust,
      except as described in the Prospectus.

           (iii) The issuance, sale and delivery of the Designated Preferred
      Securities and Debentures in accordance with the terms and conditions of
      this Agreement and the Indenture have been duly authorized by all
      necessary actions of the Offerors.  All of the Designated Preferred
      Securities have been duly and validly authorized and, when delivered in
      accordance with this Agreement will be duly and validly issued, fully
      paid and nonassessable, and will conform to the description thereof in
      the Registration Statement, the Prospectus and the Trust Agreement.  The
      Designated




                                     24

<PAGE>   25

      Preferred Securities have been approved for quotation on the Nasdaq
      National Market subject to official notice of issuance.  There are no
      preemptive or other rights to subscribe for or to purchase, and other
      than as disclosed in the Prospectus no restrictions upon the voting or
      transfer of, any shares of capital stock or equity securities of the
      Offerors or the Banks pursuant to the corporate charter, by-laws or other
      governing documents (including without limitation, the Trust Agreement)
      of the Offerors or the Banks, or, to the best of such counsel's
      knowledge, any agreement or other instrument to which either Offeror or
      any of the Banks is a party or by which either Offeror or any of the
      Banks may be bound.

           (iv) The Offerors have all requisite corporate and trust power to
      enter into and perform their obligations under this Agreement, and this
      Agreement has been duly and validly authorized, executed and delivered by
      the Offerors and constitutes the legal, valid and binding obligations of
      the Offerors enforceable in accordance with its terms, except as the
      enforcement hereof or thereof may be limited by general principles of
      equity and by bankruptcy or other laws relating to or affecting
      creditors' rights generally, and except as the indemnification and
      contribution provisions hereof may be limited under applicable laws and
      certain remedies may not be available in the case of a non-material
      breach.

           (v)  Each of the Indenture, the Trust Agreement and the
      Guarantee has been duly qualified under the Trust Indenture Act, has been
      duly authorized, executed and delivered by the Company, and is a valid
      and legally binding obligation of the Company enforceable in accordance
      with its terms, subject to the effect of bankruptcy, insolvency,
      reorganization, receivership, moratorium and other laws affecting the
      rights and remedies of creditors generally and of general principles of
      equity;

           (vi) The Debentures have been duly authorized, executed,
      authenticated and delivered by the Company, are entitled to the benefits
      of the Indenture and are legal, valid and binding obligations of the
      Company enforceable against the Company in accordance with their terms,
      subject to the effect of bankruptcy, insolvency, reorganization,
      receivership, moratorium and other laws affecting the rights and remedies
      of creditors generally and of general principles of equity;

           (vii) The Expense Agreement has been duly authorized, executed and
      delivered by the Company, and is a valid and legally binding obligation
      of the Company enforceable in accordance with its terms, subject to the
      effect of bankruptcy, insolvency, reorganization, receivership,
      moratorium and other laws affecting the rights and remedies of creditors
      generally and of general principles of equity;





                                     25

<PAGE>   26


           (viii) To the best of such counsel's knowledge, neither of the
      Offerors nor any of the Banks is in breach or violation of, or default
      under, with or without notice or lapse of time or both, its corporate
      charter, by-laws or governing document (including without limitation, the
      Trust Agreement).  The execution, delivery and performance of this
      Agreement and the consummation of the transactions contemplated by this
      Agreement, and the Trust Agreement do not and will not conflict with,
      result in the creation or imposition of any material lien, claim, charge,
      encumbrance or restriction upon any property or assets of the Offerors or
      the Banks or the Designated Preferred Securities pursuant to, or
      constitute a material breach or violation of, or constitute a material
      default under, with or without notice or lapse of time or both, any of
      the terms, provisions or conditions of the charter, by-laws or governing
      document (including without limitation, the Trust Agreement) of the
      Offerors or the Banks, or to the best of such counsel's knowledge, any
      material contract, indenture, mortgage, deed of trust, loan or credit
      agreement, note, lease, franchise, license or any other agreement or
      instrument to which either Offeror or the Banks is a party or by which
      any of them or any of their respective properties may be bound or any
      order, decree, judgment, franchise, license, Permit, rule or regulation
      of any court, arbitrator, government, or governmental agency or
      instrumentality, domestic or foreign, known to such counsel having
      jurisdiction over the Offerors or the Banks or any of their respective
      properties which, in each case, is material to the Offerors and the Banks
      on a consolidated basis. No authorization, approval, consent or order of,
      or filing, registration or qualification with, any person (including,
      without limitation, any court, governmental body or authority) is
      required under Michigan law in connection with the transactions
      contemplated by this Agreement in connection with the purchase and
      distribution of the Designated Preferred Securities by the Underwriters.

           (ix) To the best of such counsel's knowledge, holders of securities
      of the Offerors either do not have any right that, if exercised, would
      require the Offerors to cause such securities to be included in the
      Registration Statement or have waived such right.  To the best of such
      counsel's knowledge, neither the Offerors nor any of the Banks is a party
      to any agreement or other instrument which grants rights for or relating
      to the registration of any securities of the Offerors.

           (x) Except as set forth in the Registration Statement and the
      Prospectus, to the best of such counsel's knowledge, (i) no action, suit
      or proceeding at law or in equity is pending or threatened in writing to
      which the Offerors or the Banks is or may be a party, and (ii) no action,
      suit or proceeding is pending or threatened in writing against or
      affecting the Offerors or the Banks or any of their properties, before or
      by any court or governmental official, commission, board or other
      administrative agency, authority or body, or any arbitrator, wherein an
      unfavorable decision, ruling






                                     26

<PAGE>   27

      or finding could have a material adverse effect on the consummation of
      this Agreement or the issuance and sale of the Designated Preferred
      Securities as contemplated herein or the condition (financial or
      otherwise), earnings, affairs, business, or results of operations of the
      Offerors and the Banks on a consolidated basis or which is required to be
      disclosed in the Registration Statement or the Prospectus and is not so
      disclosed.

           (xi) No authorization, approval, consent or order of or filing,
      registration or qualification with, any person (including, without
      limitation, any court, governmental body or authority) is required in
      connection with the transactions contemplated by this Agreement, the
      Trust Agreement, the Registration Statement and the Prospectus, except
      such as have been obtained under the 1933 Act, and except such as may be
      required under state securities laws or Interpretations or Rules of the
      NASD in connection with the purchase and distribution of the Designated
      Preferred Securities by the Underwriter.

           (xii) The Registration Statement and the Prospectus and any
      amendments or supplements thereto (other than the financial statements or
      other financial data included therein or omitted therefrom and
      Underwriter's Information, as to which such counsel need express no
      opinion) comply as to form in all material respects with the requirements
      of the 1933 Act and the 1933 Act Regulations as of their respective dates
      of effectiveness.

           (xiii) To the best of such counsel's knowledge, there are no
      contracts, agreements, leases or other documents of a character required
      to be disclosed in the Registration Statement or Prospectus or to be
      filed as exhibits to the Registration Statement that are not so disclosed
      or filed.

           (xiv) The statements under the captions "Description of Capital
      Stock", "Supervision and Regulation", "Description of Preferred
      Securities", "Description of Subordinated Debentures", "Description of
      the Guarantee", "Relationship Among the Preferred Securities, the
      Subordinated Debentures and the Guarantee", "Certain Federal Income Tax
      Consequences" and "ERISA Considerations"  in the Prospectus, insofar as
      such statements constitute a summary of legal and regulatory matters,
      documents or proceedings referred to therein are accurate in all material
      respects and fairly present the information called for with respect to
      such legal matters, documents and proceedings, other than financial and
      statistical data as to which said counsel expresses no opinion or belief.

           (xv) Such counsel has been advised by the staff of the Commission
      that the Registration Statement has become effective under the 1933 Act;
      any required filing of the Prospectus pursuant to Rule 424(b) has been
      made within the time period required by Rule 424(b); to the best of




                                     27

<PAGE>   28

      such counsel's knowledge, no stop order suspending the effectiveness of
      the Registration Statement has been issued and no proceedings for a stop
      order are pending or threatened by the Commission.

           (xvi) Except as set forth in the Prospectus, to the best of such
      counsel's knowledge, there are no contractual encumbrances or
      restrictions, or material legal restrictions on the ability of the Banks
      (A) to pay dividends or make any other distributions on its capital stock
      or to pay indebtedness owed to the Offerors, (B) to make any loans or
      advances to, or investments in, the Offerors or (C) to transfer any of
      its property or assets to the Offerors.

     In giving the above opinion, such counsel may state that, insofar as such
opinion involves factual matters, they have relied upon certificates of
officers of the Offerors including, without limitation, certificates as to the
identity of any and all material contracts, indentures, mortgages, deeds of
trust, loans or credit agreements, notes, leases, franchises, licenses or other
agreements or instruments, and all material permits, easements, consents,
licenses, franchises and government regulatory authorizations, for purposes of
paragraphs (viii) and (xiii) hereof and certificates of public officials.

     Such counsel shall also confirm that, in connection with the preparation
of the Registration Statement and Prospectus, such counsel has participated in
conferences with officers and representatives of the Offerors and with their
independent public accountants and with the Underwriter and the Underwriter's
counsel, at which conferences such counsel made inquiries of such officers,
representatives and accountants and discussed in detail the contents of the
Registration Statement and Prospectus and such counsel has no reason to believe
(A) that the Registration Statement or any amendment thereto (except for the
financial statements and related schedules and statistical data included
therein or omitted therefrom or Underwriter's Information, as to which such
counsel need express no opinion), at the time the Registration Statement or any
such amendment became effective, contained any untrue statement of a material
fact or omitted to state any material fact required to be stated therein or
necessary to make the statements therein, in the light of the circumstances
under which they were made, not misleading or (B) that the Prospectus or any
amendment or supplement thereto (except for the financial statements and
related schedules and statistical data included therein or omitted therefrom or
Underwriter's Information, as to which such counsel need express no opinion),
at the time the Registration Statement became effective (or, if the term
"Prospectus" refers to the prospectus first filed pursuant to Rule 424(b) of
the 1933 Act Regulations, at the time the Prospectus was issued), at the time
any such amended or supplemented Prospectus was issued, at the Closing Date
and, if applicable, the Option Closing Date, contained or contains any untrue
statement of a material fact or omitted or omits to state any material fact
required to be stated therein or necessary to make the statements




                                     28

<PAGE>   29

therein not misleading.

     (e) Richards, Layton and Finger, special Delaware counsel to the Offerors,
shall have furnished to the Underwriter their signed opinion, dated as of
Closing Date or the Option Closing Date, as the case may be, in form and
substance satisfactory to such counsel, to the effect that:

            (i) The Trust has been duly created and is validly existing in good
            standing as a business trust under the Delaware Business Trust Act
            and, under the Trust Agreement and the Delaware Business Trust Act,
            has the trust power and authority to conduct its business as
            described in the Prospectus.

            (ii) The Trust Agreement is a legal, valid and binding agreement of
            the Company and the Trustees, and is enforceable against the
            Company and the Trustees, in accordance with its terms.

            (iii) Under the Trust Agreement and the Delaware Business Trust
            Act, the execution and delivery of the Underwriting Agreement by
            the Trust, and the performance by the Trust of its obligations
            thereunder, have been authorized by all requisite trust action on
            the part of the Trust.

            (iv) The Designated Preferred Securities have been duly authorized
            by the Trust Agreement, and when issued and sold in accordance with
            the Trust Agreement, the Designated Preferred Securities will be,
            subject to the qualifications set forth in paragraph (v) below,
            fully paid and nonassessable beneficial interest in the assets of
            the Trust and entitled to the benefits of the Trust Agreement.

            (v) Holders of Designated Preferred Securities, as beneficial
            owners of the Trust, will be entitled to the same limitation of
            personal liability extended to shareholders of private, for-profit
            corporations organized under the General Corporation Law of the
            State of Delaware.  Such opinion may note that the holders of
            Designated Preferred Securities may be obligated to make payments
            as set forth in the Trust Agreement.

            (vi) Under the Delaware Business Trust Act and the Trust Agreement,
            the issuance of the Designated Preferred Securities is not subject
            to preemptive rights.

            (vii) The issuance and sale by the Trust of the Designated
            Preferred Securities and the Common Securities, the execution,
            delivery and performance by the Trust of this Agreement, and the
            consummation of




                                     29

<PAGE>   30

            the transactions contemplated by this Agreement, do not violate (a)
            the Trust Agreement, or (b) any applicable Delaware law, rule or
            regulation.

     Such opinion may state that it is limited to the laws of the State of
Delaware and that the opinion expressed in paragraph (ii) above is subject to
the effect upon the Trust Agreement of (i) bankruptcy, insolvency, moratorium,
receivership, reorganization, liquidation, fraudulent conveyance and other
similar laws relating to or affecting the rights and remedies of creditors
generally, (ii) principles of equity, including applicable law relating to
fiduciary duties (regardless of whether considered and applied in a proceeding
in equity or at law), and (iii) the effect of applicable public policy on the
enforceability of provisions relating to indemnification or contribution.

     (f) Bryan Cave LLP, counsel for the Underwriter, shall have furnished the
Underwriter their signed opinion, dated the Closing Date or the Option Closing
Date, as the case may be, with respect to the sufficiency of all corporate
procedures and other legal matters relating to this Agreement, the validity of
the Designated Preferred Securities, the Registration Statement, the Prospectus
and such other related matters as the Underwriter may reasonably request and
there shall have been furnished to such counsel such documents and other
information as they may request to enable them to pass on such matters.  In
giving such opinion, Bryan Cave LLP may rely as to matters of fact upon
statements and certifications of officers of the Offerors and of other
appropriate persons and may rely as to matters of law, other than law of the
United States and the State of Missouri, and upon the opinions of Varnum,
Riddering, Schmidt & Howlett LLP and Richards, Layton and Finger described
herein.

     (g)  On the date of this Agreement and on the Closing Date (and, if
applicable, any Option Closing Date), the Underwriter shall have received from
KPMG Peat Marwick LLP a letter, dated the date of this Agreement and the
Closing Date (and, if applicable, the Option Closing Date), respectively, in
form and substance satisfactory to the Underwriter, confirming that they are
independent public accountants with respect to Company, within the meaning of
the 1933 Act and the 1933 Act Regulations, and stating in effect that:

           (i) In their opinion, the consolidated financial statements of the
      Company audited by them and included in the Registration Statement comply
      as to form in all material respects with the applicable accounting
      requirements of the 1933 Act and the 1933 Act Regulations.

           (ii) On the basis of the procedures specified by the American
      Institute of Certified Public Accountants as described in SAS No. 71,
      "Interim Financial Information", inquiries of officials of the Company
      responsible for financial and accounting matters, and such other
      inquiries and




                                     30

<PAGE>   31

      procedures as may be specified in such letter, which procedures do not
      constitute an audit in accordance with U.S. generally accepted auditing
      standards, nothing came to their attention that caused them to believe
      that, if applicable, the unaudited interim consolidated financial
      statements of the Company included in the Registration Statement do not
      comply as to form in all material respects with the applicable accounting
      requirements of the 1933 Act and 1933 Act Regulations or are not in
      conformity with U.S. generally accepted accounting principles applied on
      a basis substantially consistent, except as noted in the Registration
      Statement, with the basis for the audited consolidated financial
      statements of the Company included in the Registration Statement.

           (iii) On the basis of limited procedures, not constituting an audit
      in accordance with U.S. generally accepted auditing standards, consisting
      of a reading of the unaudited interim financial statements and other
      information referred to below, a reading of the latest available
      unaudited condensed consolidated financial statements of the Company,
      inspection of the minute books of the Company since the date of the
      latest audited financial statements of the Company included in the
      Registration Statement, inquiries of officials of the Company responsible
      for financial and accounting matters and such other inquiries and
      procedures as may be specified in such letter, nothing came to their
      attention that caused them to believe that:

                 (A) as of a specified date not more than five days prior to
            the date of such letter, there have been any changes in the
            consolidated capital stock of the Company, any increase in the
            consolidated debt of the Company, any decreases in consolidated
            total assets or shareholders equity of the Company, or any changes,
            decreases or increases in other items specified by the Underwriter,
            in each case as compared with amounts shown in the latest unaudited
            interim consolidated statement of financial condition of the
            Company included in the Registration Statement except in each case
            for changes, increases or decreases which the Registration
            Statement specifically discloses, have occurred or may occur or
            which are described in such letter; and

                 (B) for the period from the date of the latest unaudited
            interim consolidated financial statements included in the
            Registration Statement to the specified date referred to in Clause
            (iii)(A), there were any decreases in the consolidated interest
            income, net interest income, or net income of the Company or in the
            per share amount of net income of the Company, or any changes,
            decreases or increases in any other items specified by the
            Underwriter, in each case as compared with the comparable period of
            the preceding year and with





                                     31

<PAGE>   32

            any other period of corresponding length specified by the
            Underwriter, except in each case for increases or decreases which
            the Registration Statement discloses have occurred or may occur, or
            which are described in such letter.

           (iv) In addition to the audit referred to in their report included
      in the Registration Statement and the limited procedures, inspection of
      minute books, inquiries and other procedures referred to in paragraphs
      (ii) and (iii) above, they have carried out certain specified procedures,
      not constituting an audit in accordance with U.S. generally accepted
      auditing standards, with respect to certain amounts, percentages and
      financial information specified by the Underwriter which are derived from
      the general accounting records and consolidated financial statements of
      the Company which appear in the Registration Statement specified by the
      Underwriter in the Registration Statement, and have compared such
      amounts, percentages and financial information with the accounting
      records and the material derived from such records and consolidated
      financial statements of the Company have found them to be in agreement.

     In the event that the letters to be delivered referred to above set forth
any such changes, decreases or increases as specified in Clauses (iii)(A) or
(iii)(B) above, or any exceptions from such agreement specified in Clause (iv)
above, it shall be a further condition to the obligations of the Underwriter
that the Underwriter shall have determined, after discussions with officers of
the Company responsible for financial and accounting matters, that such
changes, decreases, increases or exceptions as are set forth in such letters do
not (x) reflect a material adverse change in the items specified in Clause
(iii)(A) above as compared with the amounts shown in the latest unaudited
consolidated statement of financial condition of the Company included in the
Registration Statement, (y) reflect a material adverse change in the items
specified in Clause (iii)(B) above as compared with the corresponding periods
of the prior year or other period specified by the Underwriter, or (z) reflect
a material change in items specified in Clause (iv) above from the amounts
shown in the Preliminary Prospectus distributed by the Underwriter in
connection with the offering contemplated hereby or from the amounts shown in
the Prospectus.

     (h) At the Closing Date and, if applicable, the Option Closing Date, the
Underwriter shall have received certificates of the chief executive officer and
the chief financial and accounting officer of the Company, which certificates
shall be deemed to be made on behalf of the Company dated as of the Closing
Date and, if applicable, the Option Closing Date, evidencing satisfaction of
the conditions of Section 6(a) and stating that (i) the representations and
warranties of the Company set forth in Section 2(a) hereof are accurate as of
the Closing Date and, if applicable, the Option Closing Date, and that the
Offerors have complied with all agreements and satisfied all conditions on
their part to be performed or satisfied at




                                     32

<PAGE>   33

or prior to such Closing Date; (ii) since the respective dates as of which
information is given in the Registration Statement and the Prospectus, there
has not been any material adverse change in the condition (financial or
otherwise), earnings, affairs, business, prospects or results of operations of
the Offerors and the Banks on a consolidated basis; (iii) since such dates
there has not been any material transaction entered into by the Offerors or the
Banks other than transactions in the ordinary course of business; and (iv) they
have carefully examined the Registration Statement and the Prospectus as
amended or supplemented and nothing has come to their attention that would lead
them to believe that either the Registration Statement or the Prospectus, or
any amendment or supplement thereto as of their respective effective or issue
dates, contained, and the Prospectus as amended or supplemented at such Closing
Date (and, if applicable, the Option Closing Date), contains any untrue
statement of a material fact, or omits to state a material fact required to be
stated therein or necessary in order to make the statements therein, in the
light of the circumstances under which they were made, not misleading; and (v)
covering such other matters as the Underwriter may reasonably request.  The
officers' certificate of the Company shall further state that no stop order
affecting the Registration Statement is in effect or, to their knowledge,
threatened.

     (i) At the Closing Date and, if applicable, the Option Closing Date, the
Underwriter shall have received a certificate of an authorized representative
of the Trust to the effect that to the best of his or her knowledge based upon
a reasonable investigation, the representations and warranties of the Trust in
this Agreement are true and correct as though made on and as of the Closing
Date (and, if applicable, the Option Closing Date); the Trust has complied with
all the agreements and satisfied all the conditions required by this Agreement
to be performed or satisfied by the Trust on or prior to the Closing Date and
since the most recent date as of which information is given in the Prospectus,
except as contemplated by the Prospectus, the Trust has not incurred any
material liabilities or obligations, direct or contingent, or entered into any
material transactions not in the ordinary course of business and there has not
been any material adverse change in the condition (financial or otherwise) of
the Trust.

     (j) On the Closing Date, the Underwriter shall have received duly executed
counterparts of the Trust Agreement, the Guarantee, the Indenture and the
Expense Agreement.

     (k) The NASD, upon review of the terms of the public offering of the
Designated Preferred Securities, shall not have objected to the Underwriter's
participation in such offering.

     (l) Prior to the Closing Date and, if applicable, the Option Closing Date,
the Offerors shall have furnished to the Underwriter and the Underwriter's
counsel all such other documents, certificates and opinions as they have
reasonably requested.





                                     33
<PAGE>   34


        All opinions, certificates, letters and other documents shall be in
compliance with the provisions hereof only if they are reasonably satisfactory
in form and substance to the Underwriter.  The Offerors shall furnish the
Underwriter with conformed copies of such opinions, certificates, letters and
other documents as the Underwriter shall reasonably request.

        If any of the conditions referred to in this Section 6 shall not have 
been fulfilled when and as required by this Agreement, this Agreement and all
of the Underwriter's obligations hereunder may be terminated by the Underwriter
on notice to the Company at, or at any time before, the Closing Date or the 
Option Closing Date, as applicable.  Any such termination shall be without
liability of the Underwriter to the Offerors.

     7. INDEMNIFICATION AND CONTRIBUTION.

        (a) The Offerors agree to jointly and severally indemnify and hold
harmless the Underwriter, each of its directors, officers and agents, and each
person, if any, who controls the Underwriter within the meaning of the 1933
Act, against any and all losses, claims, damages, liabilities and expenses
(including reasonable costs of investigation and reasonable attorney fees and
expenses), joint or several, arising out of or based (i) upon any untrue
statement or alleged untrue statement of a material fact made by the Company or
the Trust contained in Section 2(a) of this Agreement (or any certificate
delivered by the Company or the Trust pursuant hereto Section 6(l) hereto) or
the registration statement as originally filed or the Registration Statement,
any Preliminary Prospectus or the Prospectus, or in any amendment or supplement
thereto, (ii) upon any blue sky application or other document executed by the
Company or the Trust specifically for that purpose or based upon written
information furnished by the Company or the Trust filed in any state or other
jurisdiction in order to qualify any of the Designated Preferred Securities
under the securities laws thereof (any such application, document or
information being hereinafter referred to as a "Blue Sky Application"), (iii)
any omission or alleged omission to state a material fact in the registration
statement as originally filed or the Registration Statement, any Preliminary
Prospectus or the Prospectus, or in any amendment or supplement thereto, or in
any Blue Sky Application) required to be stated therein or necessary to make
the statements therein not misleading, and against any and all losses, claims,
damages, liabilities and expenses (including reasonable costs of investigation
and attorney fees), joint or several, arising out of or based upon any untrue
statement or alleged untrue statement of a material fact contained in any
Preliminary Prospectus or the Prospectus, or in any amendment of supplement
thereto, or arising out of or based upon any omission or alleged omission to
state therein a material fact required to be stated therein or necessary to
make the statements therein, in the light of the circumstances under which they
were made, not misleading or (iv) the enforcement of this indemnification
provision or the contribution provisions of Section 7(d); and





                                     34

<PAGE>   35

shall reimburse each such indemnified party for any reasonable legal or other
expenses as incurred, but in no event less frequently than 30 days after each
invoice is submitted, incurred by them in connection with investigating or
defending against or appearing as a third-party witness in connection with any
such loss, claim, damage, liability or action, notwithstanding the possibility
that payments for such expenses might later be held to be improper, in which
case such payments shall be promptly refunded; provided, however, that the
Offerors shall not be liable in any such case to the extent, but only to the
extent, that any such losses, claims, damages, liabilities and expenses arise
out of or are based upon any untrue statement or omission or allegation thereof
that has been made therein or omitted therefrom in reliance upon and in
conformity with information furnished in writing to the Offerors through the
Underwriter expressly for use therein beneath the heading "Underwriting;"
provided, that the indemnification contained in this paragraph with respect to
any Preliminary Prospectus shall not inure to the benefit of the Underwriter
(or of any person controlling the Underwriter) to the extent any such losses,
claims, damages, liabilities or expenses directly results from the fact that
the Underwriter sold Designated Preferred Securities to a person to whom there
was not sent or given, at or prior to the written confirmation of such sale, a
copy of the Prospectus (as amended or supplemented if any amendments or
supplements thereto shall have been furnished to the Underwriter in sufficient
time to distribute same with or prior to the written confirmation of the sale
involved), if required by law, and if such loss, claim, damage, liability or
expense would not have arisen but for the failure to give or send such person
such document.  The foregoing indemnity agreement is in addition to any
liability the Company or the Trust may otherwise have to any such indemnified
party.

     (b) The Underwriter, agrees to indemnify and hold harmless each Offeror,
each of its directors, each of its officers who signed the Registration
Statement and each person, if any, who controls an Offeror within the meaning
of the 1933 Act, to the same extent as required by the foregoing indemnity from
the Company to the Underwriter, but only with respect to information relating
to the Underwriter furnished in writing to an Offeror through the Underwriter
by or on behalf of it expressly for use in connection with the registration
statement as originally filed, the Registration Statement, any Preliminary
Prospectus, the Prospectus or any amendment or supplement thereto, beneath the
heading "Underwriting" or in a Blue Sky Application.  The foregoing indemnity
agreement is in addition to any liability which the Underwriter may otherwise
have to any such indemnified party.

     (c) If any action or claim shall be brought or asserted against any
indemnified party or any person controlling an indemnified party in respect of
which indemnity may be sought from the indemnifying party, such indemnified
party or controlling person shall promptly notify the indemnifying party in
writing, and the indemnifying party shall assume the defense thereof, including
the employment of counsel reasonably satisfactory to the indemnified party and
the payment of all





                                     35

<PAGE>   36

expenses; provided, however, that the failure so to notify the indemnifying
party shall not relieve it from any liability which it may have to an
indemnified party otherwise than under such paragraph, and further, shall only
relieve it from liability under such paragraph to the extent prejudiced
thereby.  Any indemnified party or any such controlling person shall have the
right to employ separate counsel in any such action and to participate in the
defense thereof, but the fees and expenses of such counsel shall be at the
expense of such indemnified party or such controlling person unless (i) the
employment thereof has been specifically authorized by the indemnifying party
in writing, (ii) the indemnifying party has failed to assume the defense or to
employ counsel reasonably satisfactory to the indemnified party or (iii) the
named parties to any such action (including any impleaded parties) include both
such indemnified party or such controlling person and the indemnifying party
and such indemnified party or such controlling person shall have been advised
by such counsel that there may be one or more legal defenses available to it
that are different from or in addition to those available to the indemnifying
party (in which case, if such indemnified party or controlling person notifies
the indemnifying party in writing that it elects to employ separate counsel at
the expense of the indemnifying party, the indemnifying party shall not have
the right to assume the defense of such action on behalf of such indemnified
party or such controlling person) it being understood, however, that the
indemnifying party shall not, in connection with any one such action or
separate but substantially similar or related actions in the same jurisdiction
arising out of the same general allegations or circumstances, be liable for the
reasonable fees and expenses of more than one separate firm of attorneys at any
time and for all such indemnified party and controlling persons, which firm
shall be designated in writing by the indemnified party.  Each indemnified
party and each controlling person, as a condition of such indemnity, shall use
reasonable efforts to cooperate with the indemnifying party in the defense of
any such action or claim.  The indemnifying party shall not be liable for any
settlement of any such action effected without its written consent, but if
there be a final judgment for the plaintiff in any such action, the
indemnifying party agrees to indemnify and hold harmless any indemnified party
and any such controlling person from and against any loss, claim, damage,
liability or expense by reason of such settlement or judgment.

     An indemnifying party shall not, without the prior written consent of each
indemnified party, settle, compromise or consent to the entry of any judgment
in any pending or threatened claim, action, suit or proceeding in respect of
which indemnity may be sought hereunder (whether or not such indemnified party
or any person who controls such indemnified party within the meaning of the
1933 Act is a party to such claim, action, suit or proceeding), unless such
settlement, compromise or consent includes a release of each such indemnified
party reasonably satisfactory to each such indemnified party and each such
controlling person from all liability arising out of such claim, action, suit
or proceeding or unless the indemnifying party shall confirm in a written
agreement with each indemnified party, that notwithstanding any federal, state
or common law, such




                                     36

<PAGE>   37

settlement, compromise or consent shall not alter the right of any indemnified
party or controlling person to indemnification or contribution as provided in
this Agreement.

     (d)  If the indemnification provided for in this Section 7 is unavailable
or insufficient to hold harmless an indemnified party under paragraphs (a), (b)
or (c) hereof in respect of any losses, claims, damages, liabilities or
expenses referred to therein, then each indemnifying party, in lieu of
indemnifying such indemnified party, shall contribute to the amount paid or
payable by such indemnified party as a result of such losses, claims, damages,
liabilities or expenses (i) in such proportion as is appropriate to reflect the
relative benefits received by the Offerors on the one hand and the Underwriter
on the other from the offering of the Designated Preferred Securities or (ii)
if the allocation provided by clause (i) above is not permitted by applicable
law, in such proportion as is appropriate to reflect not only the relative
benefits referred to in clause (i) above but also the relative fault of the
Offerors on the one hand and the Underwriter on the other in connection with
the statements or omissions that resulted in such losses, claims, damages,
liabilities or expenses, as well as any other relevant equitable
considerations.  The relative benefits received by the Offerors on the one hand
and the Underwriter on the other shall be deemed to be in the same proportion
as the total net proceeds from the offering of the Designated Preferred
Securities (before deducting expenses) received by the Offerors bear to the
total underwriting discounts, commissions and compensation received by the
Underwriter, in each case as set forth in the table on the cover page of the
Prospectus.  The relative fault of the Offerors on the one hand and of the
Underwriter on the other shall be determined by reference to, among other
things, whether the untrue or alleged untrue statement of a material fact or
the omission or alleged omission to state a material fact relates to
information supplied by the Offerors or by the Underwriter and the parties'
relative intent, knowledge, access to information and opportunity to correct or
prevent such untrue statement or omission.  Each Offeror and the Underwriter
agrees that it would not be just and equitable if contribution pursuant to this
paragraph (d) were determined by pro rata allocation or by any other method of
allocation that does not take into account the equitable considerations
referred to herein.  The amount paid or payable by an indemnified party as a
result of the losses, claims, damages, liabilities and expenses referred to in
the first sentence of this paragraph (d) shall be deemed to include, subject to
the limitations set forth above, any legal or other expenses reasonably
incurred by such indemnified party in connection with investigating or
defending any such action or claim.  Notwithstanding the provisions of this
paragraph (d), the Underwriter shall not be required to contribute any amount
in excess of the amount by which the total price at which the Designated
Preferred Securities underwritten by such Underwriter and distributed to the
public were offered to the public exceeds the amount of any damages that such
Underwriter has otherwise been required to pay by reason of such untrue or
alleged untrue statement or omission or alleged omission.  No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933
Act) shall be




                                     37

<PAGE>   38

entitled to contribution from any person who was not guilty of such fraudulent
misrepresentation.

     For purposes of this paragraph (d), each person who controls the
Underwriter within the meaning of the 1933 Act shall have the same rights to
contribution as such Underwriter, and each person who controls an Offeror
within the meaning of the 1933 Act, each officer and trustee of an Offeror who
shall have signed the Registration Statement and each director of an Offeror
shall have the same rights to contribution as the Offerors subject in each case
to the preceding sentence.  The obligations of the Offerors under this
paragraph (d) shall be in addition to any liability which the Offerors may
otherwise have and the obligations of the Underwriter under this paragraph (d)
shall be in addition to any liability that the Underwriter may otherwise have.

     (e) The indemnity and contribution agreements contained in this Section 7
and the representations and warranties of the Offerors set forth in this
Agreement shall remain operative and in full force and effect, regardless of
(i) any investigation made by or on behalf of the Underwriter or any person
controlling the Underwriter or by or on behalf of the Offerors, or such
directors, trustees or officers (or any person controlling an Offeror, (ii)
acceptance of any Designated Preferred Securities and payment therefor
hereunder and (iii) any termination of this Agreement.  A successor of the
Underwriter or of an Offeror, such directors, trustees or officers (or of any
person controlling the Underwriter or an Offeror) shall be entitled to the
benefits of the indemnity, contribution and reimbursement agreements contained
in this Section 7.

     (f) The Company agrees to indemnify the Trust against any and all losses,
claims, damages or liabilities that may become due from the Trust under this
Section 7.

     8. TERMINATION.  The Underwriter shall have the right to terminate this
Agreement at any time at or prior to the Closing Date or, with respect to the
Underwriter's obligation to purchase the Option Preferred Securities, at any
time at or prior to the Option Closing Date, without liability on the part of
the Underwriter to the Offerors, if:

     (a)  Either Offeror shall have failed, refused, or been unable to perform
any agreement on its part to be performed under this Agreement, or any of the
conditions referred to in Section 6 shall not have been fulfilled, when and as
required by this Agreement;

     (b) The Offerors or the Banks shall have sustained any material loss or
interference with its business from fire, explosion, flood or other calamity,
whether or not covered by insurance, or from any labor dispute or court or
governmental action, order or decree which in the judgment of the Underwriter





                                     38

<PAGE>   39

materially impairs the investment quality of the Designated Preferred
Securities;

     (c) There has been since the respective dates as of which information is
given in the Registration Statement or the Prospectus, any materially adverse
change in, or any development which is reasonably likely to have a material
adverse effect on, the condition (financial or otherwise), earnings, affairs,
business, prospects or results of operations of the Offerors and the Banks on a
consolidated basis, whether or not arising in the ordinary course of business;

     (d) There has occurred any outbreak of hostilities or other calamity or
crisis or material change in general economic, political or financial
conditions, or internal conditions, the effect of which on the financial
markets of the United States is such as to make it, in the Underwriter's
reasonable judgment, impracticable to market the Designated Preferred
Securities or enforce contracts for the sale of the Designated Preferred
Securities;

     (e) Trading generally on the New York Stock Exchange, the American Stock
Exchange or the Nasdaq National Market shall have been suspended, or minimum or
maximum prices for trading shall have been fixed, or maximum ranges for prices
for securities shall have been required, by any of said exchanges or market
system or by the Commission or any other governmental authority;

     (f) A banking moratorium shall have been declared by either federal or
Michigan authorities; or

     (g) Any action shall have been taken by any government in respect of its
monetary affairs which, in the Underwriter's reasonable judgment, has a
material adverse effect on the United States securities markets.

     If this Agreement shall be terminated pursuant to this Section 8, the
Offerors shall not then be under any liability to the Underwriter except as
provided in Sections 5 and 7 hereof.

     9. EFFECTIVE DATE OF AGREEMENT.  If the Registration Statement is not
effective at the time of execution of this Agreement, this Agreement shall
become effective on the Effective Date at the time the Commission declares the
Registration Statement effective.  The Company shall immediately notify the
Underwriter when the Registration Statement becomes effective.

     If the Registration Statement is effective at the time of execution of
this Agreement, this Agreement shall become effective at the earlier of 11:00
a.m. St. Louis time, on the first full business day following the day on which
this Agreement is executed, or at such earlier time as the Underwriter shall
release the Designated Preferred Securities for initial public offering.  The
Underwriter shall




                                     39

<PAGE>   40

notify the Offerors immediately after it has taken any action which causes this
Agreement to become effective.

     Until such time as this Agreement shall have become effective, it may be
terminated by the Offerors, by notifying the Underwriter, or by the Underwriter
by notifying either Offeror, except that the provisions of Sections 5 and 7
shall at all times be effective.

     10. REPRESENTATIONS, WARRANTIES AND AGREEMENTS TO SURVIVE DELIVERY.  The
representations, warranties, indemnities, agreements and other statements of
the Offerors and their officers and trustees set forth in or made pursuant to
this Agreement and the agreements of the Underwriter contained in Section 7
hereof shall remain operative and in full force and effect regardless of any
investigation made by or on behalf of the Offerors or controlling persons of
either Offeror, or by or on behalf of the Underwriter or controlling persons of
the Underwriter or any termination or cancellation of this Agreement and shall
survive delivery of and payment for the Designated Preferred Securities.

     11. NOTICES.  Except as otherwise provided in this Agreement, all notices
and other communications hereunder shall be in writing and shall be deemed to
have been duly given if delivered by hand, mailed by registered or certified
mail, return receipt requested, or transmitted by any standard form of
telecommunication and confirmed.  Notices to either Offeror shall be sent to
230 West Main Street, P.O. Box 491, Ionia, Michigan 48846, Attention:  William
R. Kohls (with a copy to Varnum, Riddering, Schmidt & Howlett LLP, 333 Bridge
Street, N.W., P.O. Box 352, Grand Rapids, Michigan 49501-0352, Attention:
Michael G. Wooldridge, Esq.); and notices to the Underwriter shall be sent to
Stifel, Nicolaus & Company, Incorporated, 500 North Broadway, Suite 1500, St.
Louis, Missouri 63102, Attention:  Rick E. Maples (with a copy to Bryan Cave
LLP, 211 North Broadway, Suite 3600, St. Louis, Missouri 63102, Attention:
James L. Nouss, Jr., Esq.).

     12. PARTIES.  The Agreement herein set forth is made solely for the
benefit of the Underwriter and the Offerors and, to the extent expressed,
directors, trustees and officers of the Offerors, any person controlling the
Offerors or the Underwriter, and their respective successors and assigns.  No
other person shall acquire or have any right under or by virtue of this
Agreement.  The term "successors and assigns" shall not include any purchaser,
in his status as such purchaser, from the Underwriter of the Designated
Preferred Securities.

     13. GOVERNING LAW.  This Agreement shall be governed by the laws of the
State of Missouri, without giving effect to the choice of law or conflicts of
law principles thereof.

     14. COUNTERPARTS.  This Agreement may be executed in one or more


                                      40
<PAGE>   41



counterparts, and when a counterpart has been executed by each party hereto all
such counterparts taken together shall constitute one and the same Agreement.

     If the foregoing is in accordance with the your understanding of our
agreement, please sign and return to us a counterpart hereof, whereupon this
shall become a binding agreement between the Company, the Trust and you in
accordance with its terms.

                                     Very truly yours,

                                     INDEPENDENT BANK CORPORATION


                                     By: /s/ William R. Kohls
                                         ----------------------------
                                     Name:  William R. Kohls
                                     Title: Executive Vice President



                                     IBC CAPITAL FINANCE


                                     By: /s/ William R. Kohls
                                         ----------------------------
                                     Name:  William R. Kohls
                                     Title: Administrative Trustee


CONFIRMED AND ACCEPTED,
as of December 12, 1996.

STIFEL, NICOLAUS & COMPANY, INCORPORATED



By: Rick E. Maples
    ------------------------
Name:  Rick E. Maples
Title: Senior Vice President




                                     41

<PAGE>   1
                                                                     EXHIBIT 4.1





                          INDEPENDENT BANK CORPORATION

                                      AND

                      STATE STREET BANK AND TRUST COMPANY,
                                   AS TRUSTEE




                                   INDENTURE


                         9.25% SUBORDINATED DEBENTURES

                         DATED AS OF DECEMBER 17, 1996
<PAGE>   2

                             CROSS-REFERENCE TABLE

<TABLE>
<CAPTION>
    SECTION OF
TRUST INDENTURE ACT                                                                           SECTION OF
OF 1939, AS AMENDED                                                                           INDENTURE
- -------------------                                                                           ---------
         <S>                                                                                      <C>
         310(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.10
         310(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.9
          . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.10
         310(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   Inapplicable
         311(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.14
         311(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.14
         311(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   Inapplicable
         312(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.1
          . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.2(a)
         312(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.2(c)
         312(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.2(c)
         313(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.4(a)
         313(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.4(b)
         313(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.4(a)
          . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.4(b)
         313(d) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.4(c)
         314(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6.3
         314(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   Inapplicable
         314(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   15.7
         314(d) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   Inapplicable
         314(e) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   15.7(b)
         314(f) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   Inapplicable
         315(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.1(b)
          . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.3
         315(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.2
         315(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.1
         315(d) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9.1(b)
         315(e) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7.7
         316(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7.6
         316(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7.4
         316(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   10.1
         317(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7.2
         317(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5.3
         318(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   15.9
</TABLE>

Note:    This reconciliation and tie sheet shall not, for any purpose, be
deemed to be a part of the Indenture.

                               TABLE OF CONTENTS
                                      i
<PAGE>   3


<TABLE>
<CAPTION>
                                                                                                     PAGE NO.
                                                                                                     --------
<S>                                                                                                   <C>
ARTICLE I.   DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1
        SECTION 1.1 Definitions of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1

ARTICLE II.  ISSUE, DESCRIPTION, TERMS, CONDITIONS 
        REGISTRATION AND EXCHANGE OF THE DEBENTURES . . . . . . . . . . . . . . . . . . . . . . . . .   9
        SECTION 2.1. Designation and Principal Amount . . . . . . . . . . . . . . . . . . . . . . . .   9
        SECTION 2.2. Maturity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
        SECTION 2.3. Form and Payment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   10
        SECTION 2.4. Global Debenture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   10
        SECTION 2.5. Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   11
        SECTION 2.6  Execution and Authentications  . . . . . . . . . . . . . . . . . . . . . . . . .   12
        SECTION 2.7  Registration of Transfer and Exchange  . . . . . . . . . . . . . . . . . . . . .   13
        SECTION 2.8  Temporary Securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   14
        SECTION 2.9  Mutilated, Destroyed, Lost or Stolen Securities  . . . . . . . . . . . . . . . .   14
        SECTION 2.10 Cancellation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   15
        SECTION 2.11 Benefit of Indenture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   16
        SECTION 2.12 Authenticating Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   16

ARTICLE III. REDEMPTION OF DEBENTURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   16
        SECTION 3.1. Redemption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   16
        SECTION 3.2. Special Event Redemption . . . . . . . . . . . . . . . . . . . . . . . . . . . .   17
        SECTION 3.3. Optional Redemption by Company . . . . . . . . . . . . . . . . . . . . . . . . .   17
        SECTION 3.4. Notice of Redemption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   18
        SECTION 3.5. Payment Upon Redemption  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   19
        SECTION 3.6. No Sinking Fund  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   19

ARTICLE IV. EXTENSION OF INTEREST PAYMENT PERIOD  . . . . . . . . . . . . . . . . . . . . . . . . . .   20
        SECTION 4.1. Extension of Interest Payment Period . . . . . . . . . . . . . . . . . . . . . .   20
        SECTION 4.2. Notice of Extension  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   20
        SECTION 4.3. Limitation of Transactions . . . . . . . . . . . . . . . . . . . . . . . . . . .   21

ARTICLE V. PARTICULAR COVENANTS OF THE COMPANY  . . . . . . . . . . . . . . . . . . . . . . . . . . .   21
        SECTION 5.1. Payment of Principal and Interest  . . . . . . . . . . . . . . . . . . . . . . .   21
        SECTION 5.2. Maintenance of Agency  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   21
        SECTION 5.3. Paying Agents  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   22
        SECTION 5.4. Appointment to Fill Vacancy in Office of Trustee . . . . . . . . . . . . . . . .   23
        SECTION 5.5. Compliance with Consolidation Provisions . . . . . . . . . . . . . . . . . . . .   23
        SECTION 5.6. Limitation on Dividends; Transactions with Affiliates  . . . . . . . . . . . . .   23
        SECTION 5.7. Covenants as to IBC Capital  . . . . . . . . . . . . . . . . . . . . . . . . . .   24
</TABLE>
                                      ii
<PAGE>   4



<TABLE>
<S>                                                                                                   <C>
ARTICLE VI. SECURITYHOLDERS' LISTS AND REPORTS
BY THE COMPANY AND THE TRUSTEE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      24
        SECTION 6.1. Company to Furnish Trustee Names and Addresses of
           Securityholders  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      24
        SECTION 6.2. Preservation of Information Communications with
           Securityholders  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      24
        SECTION 6.3. Reports by the Company . . . . . . . . . . . . . . . . . . . . . . . . . . . .      25
        SECTION 6.4. Reports by the Trustee . . . . . . . . . . . . . . . . . . . . . . . . . . . .      25

ARTICLE VII.  REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS 
        ON EVENT OF DEFAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      26
        SECTION 7.1. Events of Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      26
        SECTION 7.2. Collection of Indebtedness and Suits for Enforcement by Trustee  . . . . . . .      28
        SECTION 7.3. Application of Moneys Collected  . . . . . . . . . . . . . . . . . . . . . . .      29
        SECTION 7.4. Limitation on Suits  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      30
        SECTION 7.5. Rights and Remedies Cumulative; Delay or Omission Not Waiver . . . . . . . . .      30
        SECTION 7.6. Control by Securityholders . . . . . . . . . . . . . . . . . . . . . . . . . .      31
        SECTION 7.7. Undertaking to Pay Costs . . . . . . . . . . . . . . . . . . . . . . . . . . .      31

ARTICLE VIII. FORM OF DEBENTURE AND ORIGINAL ISSUE  . . . . . . . . . . . . . . . . . . . . . . . .      32      
        SECTION 8.1. Form of Debenture  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      32
        SECTION 8.2. Original Issue of Debentures . . . . . . . . . . . . . . . . . . . . . . . . .      32

ARTICLE IX.  CONCERNING THE TRUSTEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      32
        SECTION 9.1. Certain Duties and Responsibilities of Trustee   . . . . . . . . . . . . . . .      32
        SECTION 9.2. Notice of Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      34
        SECTION 9.3. Certain Rights of Trustee  . . . . . . . . . . . . . . . . . . . . . . . . . .      34
        SECTION 9.4. Trustee Not Responsible for Recitals or Issuance or Securities . . . . . . . .      35
        SECTION 9.5. May Hold Securities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      36
        SECTION 9.6. Monies Held in Trust . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      36
        SECTION 9.7. Compensation and Reimbursement . . . . . . . . . . . . . . . . . . . . . . . .      36
        SECTION 9.8. Reliance on Officers' Certificate  . . . . . . . . . . . . . . . . . . . . . .      36
        SECTION 9.9. Disqualification:  Conflicting Interests . . . . . . . . . . . . . . . . . . .      37
        SECTION 9.10. Corporate Trustee Required; Eligibility . . . . . . . . . . . . . . . . . . .      37
        SECTION 9.11. Resignation and Removal; Appointment of Successor . . . . . . . . . . . . . .      37
        SECTION 9.12. Acceptance of Appointment by Successor  . . . . . . . . . . . . . . . . . . .      39
        SECTION 9.13. Merger, Conversion, Consolidation or Succession to Business   . . . . . . . .      39
        SECTION 9.14. Preferential Collection of Claims Against the Company . . . . . . . . . . . .      40

ARTICLE X.  CONCERNING THE SECURITYHOLDERS  . . . . . . . . . . . . . . . . . . . . . . . . . . . .      40
        SECTION 10.1. Evidence of Action by Securityholders . . . . . . . . . . . . . . . . . . . .      40
        SECTION 10.2. Proof of Execution by Securityholders . . . . . . . . . . . . . . . . . . . .      40
        SECTION 10.3. Who May Be Deemed Owners  . . . . . . . . . . . . . . . . . . . . . . . . . .      41
        SECTION 10.4. Certain Securities Owned by Company Disregarded . . . . . . . . . . . . . . .      41
</TABLE>

                                     iii
<PAGE>   5


<TABLE>
<S>                                                                                                     <C>
        SECTION 10.5. Actions Binding on Future Securityholders . . . . . . . . . . . . . . . . . .      41

ARTICLE XI.  SUPPLEMENTAL INDENTURES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      42
        SECTION 11.1. Supplemental Indentures Without the Consent of Securityholders  . . . . . . .      42
        SECTION 11.2. Supplemental Indentures with Consent of Securityholders . . . . . . . . . . .      43
        SECTION 11.3. Effect of Supplemental Indentures . . . . . . . . . . . . . . . . . . . . . .      43
        SECTION 11.4. Securities Affected by Supplemental Indentures  . . . . . . . . . . . . . . .      44
        SECTION 11.5. Execution of Supplemental Indentures  . . . . . . . . . . . . . . . . . . . .      44

ARTICLE XII.  SUCCESSOR CORPORATION   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      44
        SECTION 12.1. Company May Consolidate, Etc.   . . . . . . . . . . . . . . . . . . . . . . .      44
        SECTION 12.2. Successor Corporation Substituted . . . . . . . . . . . . . . . . . . . . . .      45
        SECTION 12.3. Evidence of Consolidation, Etc. to Trustee  . . . . . . . . . . . . . . . . .      45

ARTICLE XIII.  SATISFACTION AND DISCHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      46
        SECTION 13.1. Satisfaction and Discharge of Indenture . . . . . . . . . . . . . . . . . . .      46
        SECTION 13.2. Discharge of Obligations  . . . . . . . . . . . . . . . . . . . . . . . . . .      46
        SECTION 13.3. Deposited Moneys to be Held in Trust  . . . . . . . . . . . . . . . . . . . .      47
        SECTION 13.4. Payment of Monies Held by Paying Agents . . . . . . . . . . . . . . . . . . .      47
        SECTION 13.5. Repayment to Company  . . . . . . . . . . . . . . . . . . . . . . . . . . . .      47

ARTICLE XIV.  IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS 
        AND DIRECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      47
        SECTION 14.1. No Recourse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      47

ARTICLE XV.  MISCELLANEOUS PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      48 
        SECTION 15.1. Effect on Successors and Assigns  . . . . . . . . . . . . . . . . . . . . . .      48 
        SECTION 15.2. Actions by Successor  . . . . . . . . . . . . . . . . . . . . . . . . . . . .      48 
        SECTION 15.3. Surrender of Company Powers . . . . . . . . . . . . . . . . . . . . . . . . .      48 
        SECTION 15.4. Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      48 
        SECTION 15.5. Governing Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      49 
        SECTION 15.6. Treatment of Debentures as Debt . . . . . . . . . . . . . . . . . . . . . . .      49 
        SECTION 15.7. Compliance Certificates and Opinions  . . . . . . . . . . . . . . . . . . . .      49 
        SECTION 15.8. Payments on Business Days . . . . . . . . . . . . . . . . . . . . . . . . . .      49 
        SECTION 15.9. Conflict with Trust Indenture Act . . . . . . . . . . . . . . . . . . . . . .      50 
        SECTION 15.10. Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      50 
        SECTION 15.11. Separability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      50 
        SECTION 15.12. Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      50 
        SECTION 15.13. Acknowledgment of Rights   . . . . . . . . . . . . . . . . . . . . . . . . .      50 
                                                                                                             
ARTICLE XVI.  SUBORDINATION OF SECURITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      51 
        SECTION 16.1. Agreement to Subordinate  . . . . . . . . . . . . . . . . . . . . . . . . . .      51 
        SECTION 16.2. Default on Senior Debt, Subordinated Debt or Additional Senior                         
          Obligations   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      51 
</TABLE>

                                      iv
<PAGE>   6


<TABLE>
<S>                                                                                                            <C>
        SECTION 16.3. Liquidation; Dissolution; Bankruptcy . . . . . . . . . . . . . . . . . . . . . .         52
        SECTION 16.4. Subrogation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         53
        SECTION 16.5. Trustee to Effectuate Subordination  . . . . . . . . . . . . . . . . . . . . . .         54
        SECTION 16.6. Notice by the Company  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         54
        SECTION 16.7. Rights of the Trustee; Holders of Senior Indebtedness. . . . . . . . . . . . . .         55
        SECTION 16.8. Subordination May Not be Impaired  . . . . . . . . . . . . . . . . . . . . . . .         55
</TABLE>
<PAGE>   7





                                   INDENTURE

     INDENTURE, dated as of December 17, 1996, among Independent Bank
Corporation, a Michigan corporation (the "Company") and State Street Bank and
Trust Company, a Massachusetts state chartered trust company, as trustee (the
"Trustee");

     WHEREAS, for its lawful corporate purposes, the Company has duly
authorized the execution and delivery of this Indenture to provide for the
issuance of a new series of its securities to be known as its 9.25%
Subordinated Debentures due 2026 (hereinafter referred to as the "Debentures"),
the form and substance of such Debentures and the terms, provisions and
conditions thereof to be set forth as provided in this Indenture;

     WHEREAS, IBC Capital Finance, a Delaware statutory business trust (the
"Trust"), has offered to the public $17,250,000 aggregate liquidation amount of
its 9.25% Cumulative Trust Preferred Securities (the "Preferred Securities"),
representing undivided beneficial interests in the assets of the Trust and
proposes to invest the proceeds from such offering, together with the proceeds
of the issuance and sale by the Trust to the Company of $533,500 aggregate
liquidation amount of its 9.25% Trust Common Securities, in $17,783,500
aggregate principal amount of the Debentures; and

     WHEREAS, the Company has requested that the Trustee execute and deliver
this Indenture and all requirements necessary to make this Indenture a valid
instrument in accordance with its terms, and to make the Debentures, when
executed by the Company and authenticated and delivered by the Trustee, the
valid obligations of the Company, have been performed, and the execution and
delivery of this Indenture has been duly authorized in all respects:

     WHEREAS, to provide the terms and conditions upon which the Debentures are
to be authenticated, issued and delivered, the Company has duly authorized the
execution of this Indenture; and

     WHEREAS, all things necessary to make this Indenture a valid agreement of
the Company, in accordance with its terms, have been done.

     NOW, THEREFORE, in consideration of the premises and the purchase of the
Securities by the holders thereof, it is mutually covenanted and agreed as
follows for the equal and ratable benefit of the holders of Securities:

                                   ARTICLE I.
                                  DEFINITIONS

SECTION 1.1   DEFINITIONS OF TERMS.

     The terms defined in this Section (except as in this Indenture otherwise
expressly provided or unless the context otherwise requires) for all purposes
of this Indenture and of any indenture supplemental hereto shall have the
respective meanings specified in this Section and shall include the plurals
well as the singular.  All other terms used in this Indenture that are defined
in the Trust
<PAGE>   8


Indenture Act of 1939, as amended, or that are by reference in such Act defined
in the Securities Act of 1933, as amended (except as herein otherwise expressly
provided or unless the context otherwise requires), shall have the meanings
assigned to such terms in said Trust Indenture Act and in said Securities Act
as in force at the date of the execution of this instrument.

     "Accelerated Maturity Date" means if the Company elects to accelerate the
Maturity Date in accordance with Section 2.2(c), the date selected by the
Company which is prior to the Scheduled Maturity Date, but is after December
31, 2001.

     "Additional Sums" shall have the meaning set forth in Section 2.5.

     "Additional Senior Obligations" means all indebtedness of the Company
whether incurred on or prior to the date of this Indenture or thereafter
incurred, for claims in respect of derivative products such as interest and
foreign exchange rate contracts, commodity contracts and similar arrangements;
provided, however, that Additional Senior Obligations do not include claims in
respect of Senior Debt or Subordinated Debt or obligations which, by their
terms, are expressly stated to be not superior in right of payment to the
Debentures or to rank pari passu in right of payment with the Debentures.  For
purposes of this definition, "claim" shall have the meaning assigned thereto in
Section 101(4) of the United States Bankruptcy Code of 1978, as amended.

     "Affiliate" means, with respect to a specified Person, (a) any Person
directly or indirectly owning, controlling or holding with power to vote 10% or
more of the outstanding voting securities or other ownership interests of the
specified Person, (b) any Person 10% or more of whose outstanding voting
securities or other ownership interests are directly or indirectly owned,
controlled or held with power to vote by the specified Person, (c) any Person
directly or indirectly controlling, controlled by, or under common control with
the specified Person, (d) a partnership in which the specified Person is a
general partner, (e) any officer or director of the specified Person, and (f)
if the specified Person is an individual, any entity of which the specified
Person is an officer, director or general partner.

     "Authenticating Agent" means an authenticating agent with respect to all
or any of the series of Securities appointed with respect to the Securities by
the Trustee pursuant to Section 2.12.

     "Bankruptcy Law" means Title 11, U.S. Code, or any similar federal or 
state law for the relief of debtors.

     "Board of Directors" means the Board of Directors of the Company or any
duly authorized committee of such Board.

     "Board Resolution" means a copy of a resolution certified by the Secretary
or an Assistant Secretary of the Company to have been duly adopted by the Board
of Directors and to be in full force and effect on the date of such
certification.


                                      2
<PAGE>   9


     "Business Day" means, with respect to any series of Securities, any day
other than a day on which Federal or State banking institutions in the Borough
of Manhattan, The City of New York, are authorized or obligated by law,
executive order or regulation to close or a day on which the Trustee's
Corporate Trust Office is closed for business.

     "Certificate" means a certificate signed by the principal executive
officer, the principal financial officer or the principal accounting officer of
the Company.  The Certificate need not comply with the provisions of Section
15.7.

     "Common Securities" means undivided beneficial interests in the assets of
IBC Capital which rank pari passu with Preferred Securities issued by IBC
Capital; provided, however, that upon the occurrence of an Event of Default,
the rights of holders of Common Securities to payment in respect of
distributions and payments upon liquidation, redemption and otherwise are
subordinated to the rights of holders of Preferred Securities.

     "Common Securities Guarantee" means any guarantee that the Company may
enter into with the Trustee or other Persons that operate directly or
indirectly for the benefit of holders of Common Securities of IBC Capital.

     "Company" means Independent Bank Corporation, a corporation duly organized
and existing under the laws of the State of Michigan, and, subject to the
provisions of Article Twelve, shall also include its successors and assigns.

     "Compounded Interest" shall have the meaning set forth in Section 4.1.

     "Corporate Trust Office" means the office of the Trustee at which, at any
particular time, its corporate trust business shall be principally
administered, which office at the date hereof is located at Two International
Place, Fourth Floor, Boston, Massachusetts 02110, Attention: Corporate Trust
Department.

     "Custodian" means any receiver, trustee, assignee, liquidator, or similar
official under any Bankruptcy Law.

     "Debentures" means the Subordinated Debentures authenticated and delivered
under this Indenture.

     "Debt" means with respect to any Person, whether recourse is to all or a
portion of the assets of such Person and whether or not contingent, (i) every
obligation of such Person for money borrowed; (ii) every obligation of such
Person evidenced by bonds, debentures, notes or other similar instruments,
including obligations incurred in connection with the acquisition of property,
assets or businesses; (iii) every reimbursement obligation of such Person with
respect to letters of credit, bankers' acceptances or similar facilities issued
for the account of such Person; (iv) every obligation of such Person issued or
assumed as the deferred purchase price of property or services (but excluding
trade accounts payable or accrued liabilities arising in the ordinary course of

                                      3
<PAGE>   10


business); (v) every capital lease obligation of such Person; and (vi) and
every obligation of the type referred to in clauses (i) through (v) of another
Person and all dividends of another Person the payment of which, in either
case, such Person has guaranteed or is responsible or liable, directly or
indirectly, as obligor or otherwise.

     "Default" means any event, act or condition that with notice or lapse of
time, or both, would constitute an Event of Default.

     "Deferred Interest" shall have the meaning set forth in Section 4.1.

     "Depositary" means, with respect to Securities of any series, for which
the Company shall determine that such Securities will be issued as a Global
Security, The Depository Trust Company, New York, New York, another clearing
agency, or any successor registered as a clearing agency under the Securities
and Exchange Act of 1934, as amended (the "Exchange Act"), or other applicable
statute or regulation, which, in each case, shall be designated by the Company
pursuant  to this Indenture.

     "Dissolution Event" means that as a result of the occurrence and
continuation of a Special Event, the Trust is to be dissolved in accordance
with the Trust Agreement and the Debentures held by the Property Trustee are to
be distributed to the holders of the Trust Securities issued by the Trust pro
rata in accordance with the Trust Agreement.

     "Event of Default" means, with respect to the Debentures, any event
specified in Section 7.1, continued for the period of time, if any, therein
designated.

     "Extended Interest Payment Period" shall have the meaning set forth in
Section 4.1.

     "Extended Maturity Date" means if the Company elects to extend the
Maturity Date in accordance with Section 2.2(b), the date selected by the
Company which is after the Scheduled Maturity Date but before December 31,
2045.

     "Federal Reserve" means the Board of Governors of the Federal Reserve
System.

     "Global Security" means, with respect to any series of Securities, a
Security executed by the Company and delivered by the Trustee to the Depositary
or pursuant to the Depositary's instruction, all in accordance with the
Indenture, which shall be registered in the name of the Depositary or its
nominee.

     "Governmental Obligations" means securities that are (i) direct
obligations of the United States of America for the payment of which its full
faith and credit is pledged or (ii) obligations of a Person controlled or
supervised by and acting as an agency or instrumentality of the United States
of America, the payment of which is unconditionally guaranteed as a full faith
and credit obligation by the United States of America that, in either case, are
not callable or redeemable at the option of the issuer thereof, and shall also
include a depositary receipt issued by a bank (as
                                      4

<PAGE>   11


defined in Section 3(a)(2) of the Securities Act of 1933, as amended) as
custodian with respect to any such Governmental Obligation or a specific
payment of principal of or interest on any such Governmental Obligation held by
such custodian for the account of the holder of such depositary receipt;
provided, however, that (except as required by law) such custodian is not
authorized to make any deduction from the amount payable to the holder of such
depositary receipt from any amount received by the custodian in respect of the
Governmental Obligation or the specific payment of principal of or interest on
the Governmental Obligation evidenced by such depositary receipt.

     "Herein," "hereof," and "hereunder," and other words of similar import,
refer to this Indenture as a whole and not to any particular Article, Section
or other subdivision.

     "Holder" means a Person in whose name a security is registered in the
Securities Register.

     "IBC Capital" means IBC Capital Finance, a Delaware business trust created
for the purpose of issuing preferred securities in connection with the issuance
of Securities under this Indenture.

     "Indenture" means this instrument as originally executed or as it may from
time to time be supplemented or amended by one or more indentures supplemental
hereto entered into in accordance with the terms hereof.

     "Interest Payment Date," when used with respect to any installment of
interest on the Debentures, means the date specified in the Debenture as the
fixed date on which an installment of interest with respect to the Debentures
is due and payable.

     "Investment Company Event" means the receipt by IBC Capital of an Opinion
of Counsel, rendered by a law firm experienced in such matters, to the effect
that, as a result of the occurrence of a change in law or regulation or a
change in interpretation or application of law or regulation by any legislative
body, court, governmental agency or regulatory authority (a "Change in 1940 Act
Law"), IBC Capital is or will be considered an "investment company" that is
required to be registered under the 1940 Act, which Change in 1940 Act Law
becomes effective on or after the date of original issuance of the Preferred
Securities under the Trust Agreement.

     "Maturity Date" means the date on which the Debentures mature and on which
the principal shall be due and payable together with all accrued and unpaid
interest thereon including Compounded Interest and Additional Interest, if any.

     "Non Book-Entry Preferred Securities" shall have the meaning set forth in
Section 2.4.  "Officers' Certificate" means a certificate signed by the
President or a Vice President and by the Treasurer or an Assistant Treasurer or
the Controller or an Assistant Controller or the Secretary or an Assistant
Secretary of the Company that is delivered to the Trustee in accordance with
the terms hereof.  Each such certificate shall include the statements provided
for in Section 15.7, if and to the extent required by the provisions thereof.

                                      5
<PAGE>   12


     "Opinion of Counsel" means an opinion in writing of legal counsel, who may
not be an employee of the Company, that is delivered to the Trustee in
accordance with the terms hereof.  Each such opinion shall include the
statements provided for in Section 15.7, if and to the extent required by the
provisions thereof.

     "Outstanding," when used with reference to the Debentures, means, subject
to the provisions of Section 10.4, as of any particular time, all Debentures
theretofore authenticated and delivered by the Trustee under this Indenture,
except (a) Debentures theretofore cancelled by the Trustee or any paying agent,
or delivered to the Trustee or any paying agent for cancellation or that have
previously been cancelled; (b) Debentures or portions thereof for the payment
or redemption of which moneys or Governmental Obligations in the necessary
amount shall have been deposited in trust with the Trustee or with any paying
agent (other than the Company) or shall have been set aside and segregated in
trust by the Company (if the Company shall act as its own paying agent);
provided, however, that if such Debentures or portions of such Debentures are
to be redeemed prior to the maturity thereof, notice of such redemption shall
have been given as in Article Three provided, or provision satisfactory to the
Trustee shall have been made for giving such notice; and (c) Debentures in lieu
of or in substitution for which other Debentures shall have been authenticated
and delivered pursuant to the terms of Section 2.9.

     "Person" means any individual, corporation, partnership, joint-venture,
joint-stock company, unincorporated organization or government or any agency or
political subdivision thereof.

     "Predecessor Security" of any particular Security means every previous
Security evidencing all or a portion of the same debt and as that evidenced by
such particular Security; and, for the purposes of this definition, any
Security authenticated and delivered under Section 2.9 in lieu of a lost,
destroyed or stolen Security shall be deemed to evidence the same debt as the
lost, destroyed or stolen Security.

     "Preferred Securities" means undivided beneficial interests in the assets
of a IBC Capital which rank pari passu with Common Securities issued by IBC
Capital; provided, however, that upon the occurrence of an Event of Default,
the rights of holders of Common Securities to payment in respect of
distributions and payments upon liquidation, redemption and otherwise are
subordinated to the rights of holders of Preferred Securities.

     "Preferred Securities Guarantee" means any guarantee that the Company may
enter into with State Street Bank and Trust Company or other Persons that
operate directly or indirectly for the benefit of holders of Preferred
Securities of IBC Capital.

     "Property Trustee" has the meaning set forth in the Trust Agreement of IBC
Capital Finance.

     "Responsible Officer" when used with respect to the Trustee means the
Chairman of the Board of Directors, the President, any Vice President, the
Secretary, the Treasurer, any trust officer, any corporate trust officer or any
other officer or assistant officer of the Trustee customarily performing
functions similar to those performed by the Persons who at the time shall be
such

                                      6
<PAGE>   13


officers, respectively, or to whom any corporate trust matter is referred
because of his or her knowledge of and familiarity with the particular subject.

     "Scheduled Maturity Date" means December 31, 2026.

     "Securities" means any Debentures.

     "Securityholder," "holder of Securities," "registered holder," or other
similar term, means the Person or Persons in whose name or names a particular
Security shall be registered on the books of the Company kept for that purpose
in accordance with the terms of this Indenture.

     "Senior Debt" means the principal of (and premium, if any) and interest,
if any (including interest accruing on or after the filing of any petition in
bankruptcy or for reorganization relating to the Company whether or not such
claim for post-petition interest is allowed in such proceeding), on Debt,
whether incurred on or prior to the date of this Indenture or thereafter
incurred, unless, in the instrument creating or evidencing the same or pursuant
to which the same is outstanding, it is provided that such obligations are not
superior in right of payment to the Debentures or to other Debt which is pari
passu with, or subordinated to, the Debentures; provided, however, that Senior
Debt shall not be deemed to include (i) any Debt of the Company which when
incurred and without respect to any election under section 1111(b) of the
United States Bankruptcy Code of 1978, as amended, was without recourse to the
Company, (ii) any Debt of the Company to any of its subsidiaries, (iii) Debt to
any employee of the Company, (iv) Debt which by its terms is subordinated to
trade accounts payable or accrued liabilities arising in the ordinary course of
business to the extent that payments made to the holders of such Debt by the
holders of the Debentures as a result of the subordination provisions of this
Indenture would be greater than they otherwise would have been as a result of
any obligation of such holders to pay amounts over to the obligees on such
trade accounts payable or accrued liabilities arising in the ordinary course of
business as a result of subordination provisions to which such Debt is subject;
(v) Debt which constitutes Subordinated Debt, and (vi) any other debt
securities issued pursuant to this Indenture.

     "Special Event" means a Tax Event or an Investment Company Event.

     "Subordinated Debt" means the principal of (and premium, if any) and
interest, if any (including interest accruing on or after the filing of any
petition in bankruptcy or for reorganization relating to the Company whether or
not such claim for post-petition interest is allowed in such proceeding), on
Debt, whether incurred on or prior to the date of this Indenture or thereafter
incurred, which is by its terms expressly provided to be junior and subordinate
to other Debt of the Company (other than the Debentures).

     "Subsidiary" means, with respect to any Person, (i) any corporation at
least a majority of whose outstanding Voting Stock shall at the time be owned,
directly or indirectly, by such Person or by one or more of its Subsidiaries or
by such Person and one or more of its Subsidiaries, (ii) any general
partnership, joint venture or similar entity, at least a majority of whose
outstanding  partnership or similar interests shall at the time be owned by
such Person, or by one or more of its

                                      7
<PAGE>   14


Subsidiaries, or by such Person and one or more of its Subsidiaries and (iii)
any limited partnership of which such Person or any of its Subsidiaries is a
general partner.

     "Tax Event" means the receipt by the Trust of an Opinion of Counsel
experienced in such matters to the effect that, as a result of any amendment
to, or change (including any announced prospective change) in, the laws (or any
regulations thereunder) of the United States or any political subdivision or
taxing authority thereof or therein, or as a result of any official
administrative pronouncement or judicial decision interpreting or applying such
laws or regulations, which amendment or change is effective or which
pronouncement or decision is announced on or after the date of issuance of the
Debentures under this Indenture, there is more than an insubstantial risk that
(i) IBC Capital is, or will be within 90 days after the date of such Opinion of
Counsel, subject to United States federal income tax with respect to income
received or accrued on the Debentures, (ii) interest payable by the Company on
the Debentures is not, or within 90 days after the date of such Opinion of
Counsel, will not be, deductible by the Company, in whole or in part, for
United States federal income tax purposes or (iii) IBC Capital is, or will be
within 90 days after the date of such Opinion of Counsel, subject to more than
a de minimis amount of other taxes, duties, assessments or other governmental
charges.

     "Trust Agreement" means the Amended and Restated Trust Agreement, dated
December 17, 1996, of IBC Capital Finance.

     "Trustee" means State Street Bank and Trust Company and, subject to the
provisions of Article Seven, shall also include its successors and assigns,
and, if at any time there is more than one Person acting in such capacity
hereunder, "Trustee" shall mean each such Person.  The term "Trustee" as used
with respect to a particular series of the Securities shall mean the trustee
with respect to that series.

     "Trust Indenture Act," means the Trust Indenture Act of 1939, subject to
the provisions of Sections 11.1, 11.2, and 12.1, as in effect at the date of
execution of this instrument.

     "Trust Securities" means Common Securities and Preferred Securities of a
IBC Capital.

     "Voting Stock," as applied to stock of any Person, means shares,
interests, participations or other equivalents in the equity interest (however
designated) in such Person having ordinary voting power for the election of a
majority of the directors (or the equivalent) of such Person, other than
shares, interests, participations or other equivalents having such power only
by reason of the occurrence of a contingency.

                                  ARTICLE II
                    ISSUE, DESCRIPTION, TERMS, CONDITIONS
                 REGISTRATION AND EXCHANGE OF THE DEBENTURES

SECTION 2.1.  DESIGNATION AND PRINCIPAL AMOUNT.


                                      8
<PAGE>   15


     There is hereby authorized a series of Securities designated the "9.25%
Subordinated Debentures due 2026", limited in aggregate principal amount to
$17,783,500 which amount shall be as set forth in any written order of the
Company for the authentication and delivery of Debentures pursuant to Section
8.2 of this Indenture.

SECTION 2.2.  MATURITY.

     (a) The Maturity Date will be either:

         (i)  the Scheduled Maturity Date; or

         (ii)    if the Company elects to extend the Maturity Date beyond the
     Scheduled Maturity Date in accordance with Section 2.2(b), the Extended
     Maturity Date; or

         (iii)   if the Company elects to accelerate the Maturity Date to be
     prior a date to the Scheduled Maturity Date in accordance with Section 
     2.2(c), the Accelerated Maturity Date.

         (b)     the Company may at any time before the day which 90 days
before the Scheduled Maturity Date, elect to extend the Maturity Date only once
to the Extended Maturity Date provided that the Company has received the prior
approval of the Federal Reserve if then required under applicable capital
guidelines or policies of the Federal Reserve and further provided that the
following conditions in this Section 2.2(b) are satisfied both at the date the
Company gives notice in accordance with Section 2.2(d) of its election to
extend the Maturity Date and at the Scheduled Maturity Date:

         (i)     the Company is not in bankruptcy, otherwise insolvent or in
     liquidation;

         (ii)    the Company is not in default in the payment of any interest
     or principal on the Debentures; and

         (iii)    the Trust is not in arrears on payments of Distributions on
     the Preferred Securities issued by it and no deferred Distributions are
     accumulated.

         (c)     The Company may at any time before the day which is 90 days
before the Scheduled Maturity Date and after December 31, 2001, elect to
shorten the Maturity Date only once to the Accelerated Maturity Date provided
that the Company has received the prior approval of the Federal Reserve if then
required under applicable capital guidelines or policies of the Federal
Reserve.

         (d)     If the Company elects to extend the Maturity Date in
accordance with Section 2.2(b), the Company shall give notice to registered
holders of the Debentures, the Property Trustee and the Trust of the extension
of the Maturity Date and the Extended Maturity Date at least 90 days and no
more than 180 days before the Scheduled Maturity Date.


                                      9
<PAGE>   16


         (e)     If the Company elects to accelerate the Maturity Date in
accordance with Section 2.2(c), the Company shall give notice to registered
holders of the Debentures, the Property Trustee and the Trust of the
acceleration of the Maturity Date and the Accelerated Maturity Date at least 90
days and no more than 180 days before the Accelerated Maturity Date.

SECTION 2.3.     FORM AND PAYMENT.

         Except as provided in Section 2.4, the Debentures shall be issued as a
global debenture in fully registered certificated form without interest coupons
in an aggregate principal amount of all outstanding Debentures (a "Global
Debenture"), substantially in the form of Exhibit A hereto, to be registered in
the name of the Depositary, or its nominee, and delivered by the Trustee to the
Depositary for crediting to the accounts of its participants pursuant to the
instructions of the Company.  Payments on the Debentures issues as a Global
Debenture will be made to the Depositary.

SECTION 2.4.     GLOBAL DEBENTURE.

         (a)     In connection with a Dissolution Event,

                 (i)   the Debentures in certificated form may be presented to
         the Trustee by the Property Trustee in exchange for a Global
         Debenture to be registered in the name of the Depositary, or its
         nominee, and delivered by the Trustee to the Depositary for crediting
         to the accounts of its participants pursuant to the instructions of the
         Administrative Trustees.  The Company upon any such presentation shall
         execute a Global Debenture in such aggregate principal amount and
         deliver the same to the Trustee for authentication and delivery in
         accordance with this Indenture.  Payments on the Debentures issued as a
         Global Debenture will be made to the Depositary; and

                 (ii)    if any Preferred Securities are held in non book-entry
         certificated form, the Debentures in certificated form may be
         presented to the Trustee by the Property Trustee and any Preferred
         Security Certificate which represents Preferred Securities other than
         Preferred Securities held by the Clearing Agency or its nominee ("Non
         Book-Entry Preferred Securities") will be deemed to represent
         beneficial interests in Debentures presented to the Trustee by the
         Property Trustee having an aggregate principal amount equal to the
         aggregate liquidation amount of the Non Book-Entry Preferred Securities
         until such Preferred Security Certificates are presented to the
         Security Registrar for transfer or reissuance at which time such
         Preferred Security Certificates will be canceled and a Debenture,
         registered in the name of the holder of the Preferred Security
         Certificate or the transferee of the holder of such Preferred Security
         Certificate, as the case may be, with an aggregate principal amount
         equal to the aggregate liquidation amount of the Preferred Security
         Certificate canceled, will be executed by the Company and delivered to
         the Trustee for authentication and delivery in accordance with this
         Indenture.  On issue of such Debentures, Debentures with an equivalent
         aggregate principal amount that were presented by the Property Trustee
         to the Trustee will be deemed to have been canceled.


                                      10
<PAGE>   17


         (b)     A Global Debenture may be transferred, in whole but not in
part, only to another nominee of the Depositary, or to a successor Depositary
selected or approved by the Company or to a nominee of such successor
Depositary.

         (c)     If at any time (i) the Depositary notifies the Company that it
is unwilling or unable to continue as Depositary or if at any time the
Depositary for the Debentures shall no longer be registered or in good standing
under the Securities Exchange Act of 1934, as amended, or other applicable
statute or regulation, and a successor Depositary for the Debentures is not
appointed by the Company within 90 days after the Company receives such notice
or becomes aware of such condition, as the case may be, or (ii) there shall
have occurred and be continuing an Event of Default with respect to a Global
Debenture, then the Company will execute, and the Trustee, upon written notice
from the Company, will authenticate and deliver the Debentures in definitive
registered form without coupons, and in an aggregate principal amount equal to
the principal amount of the Global Debenture in exchange for such Global
Debenture.  In addition, the Company may at any time in its sole discretion
determine that the Debentures shall no longer be represented by a Global
Debenture.  In such event the Company will execute, and the Trustee, upon
receipt of an Officer's Certificate evidencing such determination by the
Company, will authenticate and deliver the Debentures in definitive registered
form without coupons, and in an aggregate principal amount equal to the
principal amount of the Global Debenture in exchange for such Global Debenture.
Upon the exchange of the Global Debenture for such Debentures in definitive
registered form without coupons, in authorized denominations, the Global
Debenture shall be canceled by the Trustee.  Such Debentures in definitive
registered form issued in exchange for the Global Debenture shall be registered
in such names as the Depositary, pursuant to written instructions from its
direct or indirect participants or otherwise, shall instruct the Trustee.  The
Trustee shall deliver such  Securities to the Depositary for delivery to the
Persons in whose names such Securities are so registered.

SECTION 2.5.     INTEREST.

         (a)     Each Debenture will bear interest at the rate of 9.25% per
annum (the "Coupon Rate") from the original date of issuance until the
principal thereof becomes due and payable, and on any overdue principal and (to
the extent that payment of such interest is enforceable under applicable law)
on any overdue installment of interest at the Coupon Rate, compounded
quarterly, payable (subject to the provisions of Article Four) quarterly in
arrears on March 31, June 30, September 30 and December 31 of each year (each,
an "Interest Payment Date," commencing on March 31, 1997), to the Person in
whose name such Debenture or any predecessor Debenture is registered, at the
close of business on the regular record date for such interest installment,
which, in respect of (i) Debentures of which the Property Trustee is the Holder
and the Preferred Securities are in book-entry only form or (ii) a Global
Debenture, shall be the close of business on the Business Day next preceding
that Interest Payment Date.  Notwithstanding the foregoing sentence, if (i) the
Debentures are held by the Property Trustee and the Preferred Securities are no
longer in book-entry only form or (ii) the Debentures are not represented by a
Global Debenture, the record dates for payment of interest will be the 15th day
of the last month of the calendar quarter.

                                      11
<PAGE>   18


         (b)     The amount of interest payable for any period will be computed
on the basis of a 360-day year of twelve 30-day months.  Except as provided in
the following sentence, the amount of interest payable for any period shorter
than a full quarterly period for which interest is computed, will be computed
on the basis of the actual number of days elapsed in such a 30-day period. In
the event that any date on which interest is payable on the Debentures is not a
Business Day, then payment of interest payable on such date will be made on the
next succeeding day which is a Business Day (and without any interest or other
payment in respect of any such delay) with the same force and effect as if made
on the date such payment was originally payable.

         (c)     If, at any time while the Property Trustee is the Holder of
any Debentures, the Trust or the Property Trustee is required to pay any taxes,
duties, assessments or other governmental charges of whatever nature (other
than withholding taxes) imposed by the United States, or any other taxing
authority, then, in any case, the Company will pay as additional interest
("Additional Sums") on the Debentures held by the Property Trustee, such
additional amounts as shall be required so that the net amounts received and
retained by the Trust and the Property Trustee after paying such taxes, duties,
assessments or other governmental charges will be equal to the amounts the
Trust and the Property Trustee would have received had no such taxes, duties,
assessments or other government charges been imposed.

SECTION 2.6      EXECUTION AND AUTHENTICATIONS.

         The Debentures shall be signed on behalf of the Company by its
President or one of its Vice Presidents, under its corporate seal attested by
its Secretary or one of its Assistant Secretaries.  Signatures may be in the
form of a manual or facsimile signature.  The Company may use the facsimile
signature of any Person who shall have been a President or Vice President
thereof, or of any Person who shall have been a Secretary or Assistant
Secretary thereof, notwithstanding the fact that at the time the Securities
shall be authenticated and delivered or disposed of such Person shall have
ceased to be the President or a Vice President, or the Secretary or an
Assistant Secretary, of the Company.  The seal of the Company may be in the
form of a facsimile of such seal and may be impressed, affixed, imprinted or
otherwise reproduced on the Securities.  The Securities may contain such
notations, legends or endorsements required by law, stock exchange rule or
usage.  Each Security shall be dated the date of its authentication by the
Trustee.

         A Security shall not be valid until authenticated manually by an
authorized signatory of the Trustee, or by an Authenticating Agent.  Such
signature shall be conclusive evidence that the Security so authenticated has
been duly authenticated and delivered hereunder and that the holder is entitled
to the benefits of this Indenture.

         At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities of any series executed by
the Company to the Trustee for authentication, together with a written order of
the Company for the authentication and delivery of such Securities, signed by
its President or any Vice President and its Treasurer or any Assistant
Treasurer, and the Trustee in accordance with such written order shall
authenticate and deliver such Securities.

                                      12
<PAGE>   19


         In authenticating such Securities and accepting the additional
responsibilities under this Indenture in relation to such Securities, the
Trustee shall be entitled to receive, and (subject to Section 9.1) shall be
fully protected in relying upon, an Opinion of Counsel stating that the form
and terms thereof have been established in conformity with the provisions of
this Indenture.

         The Trustee shall not be required to authenticate such Securities if
the issue of such Securities pursuant to this Indenture will affect the
Trustee's own rights, duties or immunities under the Securities and this
Indenture or otherwise in a manner that is not reasonably acceptable to the
Trustee.

SECTION 2.7      REGISTRATION OF TRANSFER AND EXCHANGE.

         (a)     Securities may be exchanged upon presentation thereof at the
office or agency of the Company designated for such purpose in the Borough of
Manhattan, the City and State of New York, or at the office of the Security
Registrar, for other Securities and for a like aggregate principal amount, upon
payment of a sum sufficient to cover any tax or other governmental charge in
relation thereto, all as provided in this Section.  In respect of any
Securities so surrendered for exchange, the Company shall execute, the Trustee
shall authenticate and such office or agency shall deliver in exchange therefor
the Security or Securities that the Securityholder making the exchange shall be
entitled to receive, bearing numbers not contemporaneously outstanding.

         (b)     The Company shall keep, or cause to be kept, at its office or
agency designated for such purpose in the Borough of Manhattan, the City and
State of New York, or at the office of the Security Registrar, or such other
location designated by the Company a register or registers (herein referred to
as the "Security Register") in which, subject to such reasonable regulations as
it may prescribe, the Company shall register the Securities and the transfers
of Securities as in this Article provided and which at all reasonable times
shall be open for inspection by the Trustee.  The registrar for the purpose of
registering Securities and transfer of Securities as herein provided shall
initially be the Trustee and and thereafter as may be appointed by the Company
as authorized by Board Resolution (the "Security Registrar").

         Upon surrender for transfer of any Security at the office or agency of
the Company designated for such purpose, the Company shall execute, the Trustee
shall authenticate and such office or agency shall deliver in the name of the
transferee or transferees a new Security or Securities  for a like aggregate
principal amount.

         All Securities presented or surrendered for exchange or registration
of transfer, as provided in this Section, shall be accompanied (if so required
by the Company or the Security Registrar) by a written instrument or
instruments of transfer, in form satisfactory to the Company or the Security
Registrar, duly executed by the registered holder or by such holder's duly
authorized attorney in writing.

         (c)     No service charge shall be made for any exchange or
registration of transfer of Securities, or issue of new Securities in case of
partial redemption of any series, but the Company

                                      13
<PAGE>   20


may require payment of a sum sufficient to cover any tax or other governmental
charge in relation thereto, other than exchanges pursuant to Section 2.8, the
second paragraph of Section 3.5 and Section 11.4 not involving any transfer.

         (d)     The Company shall not be required (i) to issue, exchange or
register the transfer of any Securities during a period beginning at the
opening of business 15 days before the day of the mailing of a notice of
redemption of less than all the Outstanding Securities and ending at the close
of business on the day of such mailing, nor (ii) to register the transfer of or
exchange any Securities or portions thereof called for redemption.  The
provisions of this Section 2.7 are, with respect to any Global Security,
subject to Section 2.4 hereof.

SECTION 2.8      TEMPORARY SECURITIES.

         Pending the preparation of definitive Securities, the Company may
execute, and the Trustee shall authenticate and deliver, temporary Securities
(printed, lithographed, or typewritten).  Such temporary Securities shall be
substantially in the form of the definitive Securities in lieu of which they
are issued, but with such omissions, insertions and variations as may be
appropriate for temporary Securities, all as may be determined by the Company.
Every temporary Security shall be executed by the Company and be authenticated
by the Trustee upon the same conditions and in substantially the same manner,
and with like effect, as the definitive Securities.  Without unnecessary delay
the Company will execute and will furnish definitive Securities and thereupon
any or all temporary Securities may be surrendered in exchange therefor
(without charge to the holders), at the office or agency of the Company
designated for the purpose in the Borough of Manhattan, the City and State of
New York, and the Trustee shall authenticate and such office or agency shall
deliver in exchange for such temporary Securities an equal aggregate principal
amount of definitive Securities, unless the Company advises the Trustee to the
effect that definitive Securities need not be executed and furnished until
further notice from the Company.  Until so exchanged, the temporary Securities
shall be entitled to the same benefits under this Indenture as definitive
Securities authenticated and delivered hereunder.

SECTION 2.9      MUTILATED, DESTROYED, LOST OR STOLEN SECURITIES.

         In case any temporary or definitive Security shall become mutilated or
be destroyed, lost or stolen, the Company (subject to the next succeeding
sentence) shall execute, and upon the Company's request the Trustee (subject as
aforesaid) shall authenticate and deliver, a new Security of the same series,
bearing a number not contemporaneously outstanding, in exchange and
substitution for the mutilated Security, or in lieu of and in substitution for
the Security so destroyed, lost or stolen.  In every case the applicant for a
substituted Security shall furnish to the Company and the Trustee such security
or indemnity as may be required by them to save each of them harmless, and, in
every case of destruction, loss or theft, the applicant shall also furnish to
the Company and the Trustee evidence to their satisfaction of the destruction,
loss or theft of the applicant's Security and of the ownership thereof.  The
Trustee may authenticate any such substituted Security and deliver the same
upon the written request or authorization of its President or any Vice
President and its Treasurer or any assistant Treasurer of the Company.  Upon
the

                                      14
<PAGE>   21


issuance of any substituted Security, the Company may require the payment of a
sum sufficient to cover any tax or other governmental charge that may be
imposed in relation thereto and any other expenses (including the fees and
expenses of the Trustee) connected therewith.  In case any Security that has
matured or is about to mature shall become mutilated or be destroyed, lost or
stolen, the Company may, instead of issuing a substitute Security, pay or
authorize the payment of the same (without surrender thereof except in the case
of a mutilated Security) if the applicant for such payment shall furnish to the
Company and the Trustee such security or indemnity as they may require to save
them harmless, and, in case of destruction, loss or theft, evidence to the
satisfaction of the Company and the Trustee of the destruction, loss or theft
of such Security and of the ownership thereof.

         Every replacement Security issued pursuant to the provisions of this
Section shall constitute an additional contractual obligation of the Company
whether or not the mutilated, destroyed, lost or stolen Security shall be found
at any time, or be enforceable by anyone, and shall be entitled to all the
benefits of this Indenture equally and proportionately with any and all other
Securities of the same series duly issued hereunder.  All Securities shall be
held and owned upon the express condition that the foregoing provisions are
exclusive with respect to the replacement or payment of mutilated, destroyed,
lost or stolen Securities, and shall preclude (to the extent lawful) any and
all other rights or remedies, notwithstanding any law or statute existing or
hereafter enacted to the contrary with respect to the replacement or payment of
negotiable instruments or other securities without their surrender.

SECTION 2.10     CANCELLATION.

         All Securities surrendered for the purpose of payment, redemption,
exchange or registration of transfer shall, if surrendered to the Company or
any paying agent, be delivered to the Trustee for cancellation, or, if
surrendered to the Trustee, shall be canceled by it, and no Securities shall be
issued in lieu thereof except as expressly required or permitted by any of the
provisions of this Indenture.  On request of the Company at the time of such
surrender, the Trustee shall deliver to the Company canceled Securities held by
the Trustee. In the absence of such request the Trustee may dispose of canceled
Securities in accordance with its standard procedures and deliver a certificate
of disposition to the Company.  If the Company shall otherwise acquire any of
the Securities, however, such acquisition shall not operate as a redemption or
satisfaction of the indebtedness represented by such Securities unless and
until the same are delivered to the Trustee for cancellation.

SECTION 2.11     BENEFIT OF INDENTURE.

         Nothing in this Indenture or in the Securities, express or implied,
shall give or be construed to give to any Person, other than the parties hereto
and the holders of the Securities (and, with respect to the provisions of
Article Sixteen, the holders of Senior Indebtedness) any legal or equitable
right, remedy or claim under or in respect of this Indenture, or under any
covenant, condition or provision herein contained; all such covenants,
conditions and provisions being for the sole benefit of the parties hereto and
of the holders of the Securities (and, with respect to the provisions of
Article Sixteen, the holders of Senior Indebtedness).

                                      15
<PAGE>   22


SECTION 2.12     AUTHENTICATING AGENT.

         So long as any of the Securities remain outstanding there may be an
Authenticating Agent for the Securities which the Trustee shall have the right
to appoint.  Said Authenticating Agent shall be authorized to act on behalf of
the Trustee to authenticate the Securities issued upon exchange, transfer or
partial redemption thereof, and Securities so authenticated shall be entitled
to the benefits of this Indenture and shall be valid and obligatory for all
purposes as if authenticated by the Trustee hereunder.  All references in this
Indenture to the authentication of Securities by the Trustee shall be deemed to
include authentication by an Authenticating Agent for such series. Each
Authenticating Agent shall be acceptable to the company and shall be a
corporation that has a combined capital and surplus, as most recently reported
or determined by it, sufficient under the laws of any jurisdiction under which
it is organized or in which it is doing business to conduct a trust business,
and that is otherwise authorized under such laws to conduct such business and
is subject to supervision or examination by Federal or State authorities.  If
at any time any Authenticating Agent shall cease to be eligible in accordance
with these provisions, it shall resign immediately.

         Any Authenticating Agent may at any time resign by giving written
notice of resignation to the Trustee and to the Company.  The Trustee may at
any time (and upon request by the Company shall) terminate the agency of any
Authenticating Agent by giving written notice of termination to such
Authenticating Agent and to the Company.  Upon resignation, termination or
cessation of eligibility of any Authenticating Agent, the Trustee may appoint
an eligible successor Authenticating Agent acceptable to the Company.  Any
successor Authenticating Agent, upon acceptance of its appointment hereunder,
shall become vested with all the rights, powers and duties of its predecessor
hereunder as if originally named as an Authenticating Agent pursuant hereto.

                                  ARTICLE III.
                            REDEMPTION OF DEBENTURES

SECTION 3.1.     REDEMPTION.

         Subject to the Company having received prior approval of the Federal
Reserve, if then required under the applicable capital guidelines or policies
of the Federal Reserve, the Company may redeem the Debentures issued hereunder
on and after the dates and in accordance with the terms established pursuant to
this Article Three.

SECTION 3.2.     SPECIAL EVENT REDEMPTION.

         Subject to the Company having received the prior approval of the
Federal Reserve, if then required under the applicable capital guidelines or
policies of the Federal Reserve, if a Special Event has occurred and is
continuing, then, notwithstanding Section 3.3(a) but subject to Section 3.3(b),
the Company shall have the right upon not less than 30 days nor more than 60
days notice to the Holders of the Debentures to redeem the Debentures, in whole
but not in part, for cash within 90 days following the occurrence of such
Special Event (the "90-Day Period") at a redemption price equal to 100% of the
principal amount to be redeemed plus any accrued and unpaid interest thereon


                                      16
<PAGE>   23


to the date of such redemption (the "Redemption Price"), provided that if at
the time there is available to the Company the opportunity to eliminate, within
the 90-Day Period, the Tax Event by taking some ministerial action
("Ministerial Action"), such as filing a form or making an election, or
pursuing some other similar reasonable measure which has no adverse effect on
the Company, the Trust or the Holders of the Trust Securities issued by the
Trust, the Company shall pursue such Ministerial Action in lieu of redemption,
and, provided, further, that the Company shall have no right to redeem the
Debentures while the Trust is pursuing any Ministerial Action pursuant to its
obligations under the Trust Agreement.  The Redemption Price shall be paid
prior to 12:00 noon, New York time, on the date of such redemption or such
earlier time as the Company determines, provided that the Company shall deposit
with the Trustee an amount sufficient to pay the Redemption Price by 10:00
a.m., New York time, on the date such Redemption Price is to be paid.

SECTION 3.3.     OPTIONAL REDEMPTION BY COMPANY.

         (a)     Subject to the provisions of Section 3.3(b), except as
otherwise may be specified in this Indenture, the Company shall have the right
to redeem the Debentures, in whole or in part, from time to time, on or after
December 13, 2001, at a redemption price equal to the Redemption Price.  Any
redemption pursuant to this paragraph will be made upon not less than 30 days
nor more than 60 days notice to the Holder of the Debentures, at the Redemption
Price.  If the Debentures are only partially redeemed pursuant to this Section
3.3, the Debentures will be redeemed pro rata or by lot or by any other manner
the Trustee shall deem appropriate in its discretion; provided, that if at the
time of redemption the Debentures are registered as a Global Debenture, the
Depositary shall determine, in accordance with its procedures, the principal
amount of such Debentures held by each Holder of Debentures to be redeemed.
The Redemption Price shall be paid prior to 12:00 noon, New York time, on the
date of such redemption or at such earlier time as the Company determines
provided that the Company shall deposit with the Trustee an amount sufficient
to pay the Redemption Price by 10:00 a.m., New York time, on the date such
Redemption Price is to be paid.

         (b)     If a partial redemption of the Debentures would result in the
delisting of the Preferred Securities issued by the Trust from The NASDAQ
National Market or any national securities exchange or other organization on
which the Preferred Securities are then listed, the Company shall not be
permitted to effect such partial redemption and may only redeem the Debentures
in whole.

SECTION 3.4.     NOTICE OF REDEMPTION.

         (a)     In case the Company shall desire to exercise such right to
redeem all or, as the case may be, a portion of the Debentures in accordance
with the right reserved so to do, the Company shall, or shall cause the Trustee
to upon receipt of 45 days prior written notice from the Company (which notice
shall, in the event of a Partial Redemption, include a representation to the
effect that such Partial Redemption will not result in the delisting of the
Preferred Securities as described in Section 3.3(b) above), give notice of such
redemption to holders of the Debentures to be redeemed by mailing, first class
postage prepaid, a notice of such redemption not less than 30 days and not more
than 60 days before the date fixed for redemption to such holders at their last
addresses as they shall appear upon the Security Register unless a shorter
period is specified in the Debentures to be

                                      17
<PAGE>   24


redeemed.  Any notice that is mailed in the manner herein provided shall be
conclusively presumed to have been duly given, whether or not the registered
holder receives the notice. In any case, failure duly to give such notice to
the holder of any Security designated for redemption in whole or in part, or
any defect in the notice, shall not affect the validity of the proceedings for
the redemption of any other Debentures.  In the case of any redemption of
Debentures prior to the expiration of any restriction on such redemption
provided in the terms of such Debentures or elsewhere in this Indenture, the
Company shall furnish the Trustee with an Officers' Certificate evidencing
compliance with any such restriction.

         Each such notice of redemption shall specify the date fixed for
redemption and the redemption price at which Debentures of that series are to
be redeemed, and shall state that payment of the redemption price of such
Debentures to be redeemed will be made at the office or agency of the Company
in the Borough of Manhattan, the City and State of New York or at the Corporate
Trust Office, upon presentation and surrender of such Debentures, that interest
accrued to the date fixed for redemption will be paid as specified in said
notice, that from and after said date interest will cease to accrue. If less
than all the Debentures of a series are to be redeemed, the notice to the
holders of Debentures of that series to be redeemed in whole or in part shall
specify the particular Debentures to be so redeemed.  In case any Security is
to be redeemed in part only, the notice that relates to such Security shall
state the portion of the principal amount thereof to be redeemed, and shall
state that on and after the redemption date, upon surrender of such Security, a
new Security or Debentures of such series in principal amount equal to the
unredeemed portion thereof.

         (b)     If less than all the Debentures are to be redeemed, the
Company shall give the Trustee at least 45 days' notice in advance of the date
fixed for redemption as to the aggregate principal amount of the Debentures to
be redeemed, and thereupon the Trustee shall select, by lot or in such other
manner as it shall deem appropriate and fair in its discretion and that may
provide for the selection of a portion or portions (equal to twenty-five U.S.
dollars ($25) or any integral multiple thereof) of the principal amount of such
Debentures of a denomination larger than $25, the Debentures to be redeemed and
shall thereafter promptly notify the Company in writing of the numbers of the
Debentures to be redeemed, in whole or in part.

         The Company may, if and whenever it shall so elect, by delivery of
instructions signed on its behalf by its President or any Vice President,
instruct the Trustee or any paying agent to call all or any part of the
Debentures of a particular series for redemption and to give notice of
redemption in the manner set forth in this Section, such notice to be in the
name of the Company or its own name as the Trustee or such paying agent may
deem advisable.  In any case in which notice of redemption is to be given by
the Trustee or any such paying agent, the Company shall deliver or cause to be
delivered to, or permit to remain with, the Trustee or such paying agent, as
the case may be, such Security Register, transfer books or other records, or
suitable copies or extracts therefrom, sufficient to enable the Trustee or such
paying agent to give any notice by mail that may be required under the
provisions of this Section.

SECTION 3.5.     PAYMENT UPON REDEMPTION.

                                      18
<PAGE>   25


         (a)     If the giving of notice of redemption shall have been
completed as above provided, the Debentures or portions of Debentures to be
redeemed specified in such notice shall become due and payable on the date and
at the place stated in such notice at the applicable Redemption Price and
interest on such Debentures or portions of Debentures shall cease to accrue on
and after the date fixed for redemption, unless the Company shall default in
the payment of such Redemption Price with respect to any such Security or
portion thereof.  On presentation and surrender of such Debentures on or after
the date fixed for redemption at the place of payment specified in the notice,
said Debentures shall be paid and redeemed at the applicable Redemption Price,
together with interest accrued thereon to the date fixed for redemption (but if
the date fixed for redemption is an interest payment date, the interest
installment payable on such date shall be payable to the registered holder at
the close of business on the applicable record date pursuant to Section 3.3).

         (b)     Upon presentation of any Debenture that is to be redeemed in
part only, the Company shall execute and the Trustee shall authenticate and the
office or agency where the Security is presented shall deliver to the holder
thereof, at the expense of the Company, a new Security or Debentures of
authorized denomination in principal amount equal to the unredeemed portion of
the Security so presented.

SECTION 3.6.     NO SINKING FUND.

         The Debentures are not entitled to the benefit of any sinking fund.

                                   ARTICLE IV
                     EXTENSION OF INTEREST PAYMENT PERIOD

SECTION 4.1.     EXTENSION OF INTEREST PAYMENT PERIOD.

         So long as no Event of Default has occurred and is continuing, the
Company shall have the right, at any time and from time to time during the term
of the Debentures, to defer payments of interest by extending the interest
payment period of such Debentures for a period not exceeding 20 consecutive
quarters (each such period an "Extended Interest Payment Period"), during which
Extended Interest Payment Period no interest shall be due and payable; provided
that no Extended Interest Payment Period may extend beyond the Maturity Date.
To the extent permitted by applicable law, interest, the payment of which has
been deferred because of the extension of the interest payment period pursuant
to this Section 4.1, will bear interest thereon at the Coupon Rate compounded
quarterly for each quarter of the Extended Interest Payment Period ("Compounded
Interest").  At the end of the Extended Interest Payment Period, the Company
shall calculate (and deliver such calculation to the Trustee) and pay all
interest accrued and unpaid on the Debentures, including any Additional
Interest and Compounded Interest (together, "Deferred Interest") that shall be
payable to the Holders of the Debentures in whose names the Debentures are
registered in the Security Register on the first record date after the end of
the Extended Interest Payment Period.  Before the termination of any Extended
Interest Payment Period, the Company may further extend such period, provided
that such period together with all such further extensions thereof shall not
exceed 20 consecutive quarters, or extend beyond the Maturity Date of the
Debentures.  Upon the

                                      19
<PAGE>   26


termination of any Extended Interest Payment Period and upon the payment of all
Deferred Interest then due, the Company may commence a new Extended Interest
Payment Period, subject to the foregoing requirements.  No interest shall be
due and payable during an Extended Interest Payment Period, except at the end
thereof, but the Company may prepay at any time all or any portion of the
interest accrued during an Extended Interest Payment Period.

SECTION 4.2.     NOTICE OF EXTENSION.

         (a)     If the Property Trustee is the only registered Holder of the
Debentures at the time the Company selects an Extended Interest Payment Period,
the Company shall give written notice to the Administrative Trustees, the
Property Trustee and the Trustee of its selection of such Extended Interest
Payment Period one Business Day before the earlier of (i) the next succeeding
date on which Distributions on the Trust Securities issued by the Trust are
payable, or (ii) the date the Trust is required to give notice of the record
date, or the date such Distributions are payable, to the Nasdaq National Market
or other applicable self-regulatory organization or to holders of the Preferred
Securities issued by the Trust, but in any event at least one Business Day
before such record date.

         (b)     If the Property Trustee is not the only Holder of the
Debentures at the time the Company selects an Extended Interest Payment Period,
the Company shall give the Holders of the Debentures and the Trustee written
notice of its selection of such Extended Interest Payment Period at least one
Business Day before the earlier of (i) the next succeeding Interest Payment
Date, or (ii) the date the Company is required to give notice of the record or
payment date of such interest payment to the Nasdaq National Market or other
applicable self-regulatory organization or to Holders of the Debentures.

         (c)     The quarter in which any notice is given pursuant to
paragraphs (a) or (b) of this Section 4.2 shall be counted as one of the 20
quarters permitted in the maximum Extended Interest Payment Period permitted
under Section 4.1.

SECTION 4.3.     LIMITATION OF TRANSACTIONS.

         If (i) the Company shall exercise its right to defer payment of
interest as provided in Section 4.1, or (ii) there shall have occurred any
Event of Default, as defined in the Indenture, then (a) the Company shall not
declare or pay any dividend on, make any distributions with respect to, or
redeem, purchase, acquire or make a liquidation payment with respect to, any of
its capital stock or (b) the Company shall not make any payment of interest,
principal or premium, if any, on or repay, repurchase or redeem any debt
securities issued by the Company which rank pari passu with or junior to the
Debentures; (other than (i) purchases or acquisitions of shares of its common
stock in connection with the satisfaction by the Company of its obligations
under any employee benefit plans or the satisfaction by the Company of its
obligations pursuant to any contract or security requiring the Company to
purchase shares of its common stock, (ii) the purchase of fractional interests
in shares of its capital stock pursuant to the conversion or exchange
provisions of such capital stock or security being converted or exchanged,
(iii) payments under the Guaranty (iv) dividends or distributions in Common
Stock of the Company, or (v) any declaration of a dividend

                                      20
<PAGE>   27


in connection with the implementation of a shareholders' rights plan, or the
issuance of stock under any such plan in the future or the redemption or
repurchase or any such rights pursuant thereto).

                                   ARTICLE V
                      PARTICULAR COVENANTS OF THE COMPANY

SECTION 5.1.     PAYMENT OF PRINCIPAL AND INTEREST.

         The Company will duly and punctually pay or cause to be paid the
principal of and interest on the Debentures at the time and place and in the
manner provided herein and established with respect to such Debentures.

SECTION 5.2.     MAINTENANCE OF AGENCY.

         So long as any of the Securities remain Outstanding, the Company
agrees to maintain an office or agency in the Borough of Manhattan, the City
and State of New York, and at such other location or locations as may be
designated as provided in this Section 5.2, where (i) Securities may be
presented for payment, (ii) Securities may be presented as hereinabove
authorized for registration of transfer and exchange, and (iii) notices and
demands to or upon the Company in respect of the Securities and this Indenture
may be given or served, such designation to continue with respect to such
office or agency until the Company shall, by written notice signed by its
President or a Vice President and delivered to the Trustee, designate some
other office or agency for such purposes or any of them.  If at any time the
Company shall fail to maintain any such required office or agency or shall fail
to furnish the Trustee with the address thereof, such presentations, notices
and demands may be made or served at the Corporate Trust Office of the Trustee,
and the Company hereby appoints the Trustee as its agent to receive all such
presentations, notices and demands.

SECTION 5.3.     PAYING AGENTS.

         (a)     If the Company shall appoint one or more paying agents for all
of the Securities, other than the Trustee, the Company will cause each such
paying agent to execute and deliver to the Trustee an instrument in which such
agent shall agree with the Trustee, subject to the provisions of this Section:

                 (i)     that it will hold all sums held by it as such agent 
         for the payment of the principal of (and premium, if any) or
         interest on the Securities (whether such sums have been paid to it by
         the Company or by any other obligor of such Securities) in trust for
         the benefit of the Persons entitled thereto;

                (ii)    that it will give the Trustee notice of any failure by
         the Company (or by any other obligor of such Securities) to make
         any payment of the principal of (and premium, if any) or interest on
         the Securities when the same shall be due and payable;


                                      21
<PAGE>   28


               (iii)   that it will, at any time during the continuance of any
         failure referred to in the preceding paragraph (a)(ii) above,
         upon the written request of the Trustee, forthwith pay to the Trustee
         all sums so held in trust by such paying agent; and

                (iv)   that it will perform all other duties of paying agent as 
         set forth in this Indenture.

         (b)     If the Company shall act as its own paying agent with respect
to the Securities, it will on or before each due date of the principal of (and
premium, if any) or interest on Securities, set aside, segregate and hold in
trust for the benefit of the Persons entitled thereto a sum sufficient to pay
such principal (and premium, if any) or interest so becoming due on Securities
of that series  until such sums shall be paid to such Persons or otherwise
disposed of as herein provided and will promptly notify the Trustee of such
action, or any failure (by it or any other obligor on such Securities) to take
such action.  Whenever the Company shall have one or more paying agents for any
of the Securities, it will, prior to each due date of the principal of (and
premium, if any) or interest on any Securities, deposit with the paying agent a
sum sufficient to pay the principal (and premium, if any) or interest so
becoming due, such sum to be held in trust for the benefit of the Persons
entitled to such principal, premium or interest, and (unless such paying agent
is the Trustee) the Company will promptly notify the Trustee of this action or
failure so to act.

         (c)     Notwithstanding anything in this Section to the contrary, (i)
the agreement to hold sums in trust as provided in this Section is subject to
the provisions of Section 13.5, and (ii) the Company may at any time, for the
purpose of obtaining the satisfaction and discharge of this Indenture or for
any other purpose, pay, or direct any paying agent to pay, to the Trustee all
sums held in trust by the Company or such paying agent, such sums to be held by
the Trustee upon the same terms and conditions as those upon which such sums
were held by the Company or such paying agent; and, upon such payment by any
paying agent to the Trustee, such paying agent shall be released from all
further liability with respect to such money.

SECTION 5.4.     APPOINTMENT TO FILL VACANCY IN OFFICE OF TRUSTEE.

         The Company, whenever necessary to avoid or fill a vacancy in the
office of Trustee, will appoint, in the manner provided in Section 9.10, a
Trustee, so that there shall at all times be a Trustee hereunder.

SECTION 5.5.     COMPLIANCE WITH CONSOLIDATION PROVISIONS.

         The Company will not, while any of the Securities remain outstanding,
consolidate with, or merge into, or merge into itself, or sell or convey all or
substantially all of its property to any other company unless the provisions of
Article Twelve hereof are complied with.

SECTION 5.6.     LIMITATION ON DIVIDENDS; TRANSACTIONS WITH AFFILIATES.

                                      22
<PAGE>   29


         If Securities are issued to IBC Capital or a trustee of IBC Capital in
connection with the issuance of Trust Securities by IBC Capital and (i) there
shall have occurred any event that would constitute an Event of Default, (ii)
IBC Capital shall be in default with respect to its payment of any obligations
under the Preferred Securities Guarantee relating to IBC Capital or (iii) the
Company shall have given notice of its election to defer payments of interest
on such Securities by extending the interest payment period as provided in the
Indenture and such period, or any extension thereof, shall be continuing, then
(a) the Company shall not declare or pay any dividend on, make any
distributions with respect to, or redeem, purchase or make a liquidation
payment with respect to, any of its capital stock, and (b) the Company shall
not make any payment of interest, principal or premium, if any, on or repay,
repurchase or redeem any debt securities issued by the Company which rank pari
passu with or junior in interest to the Debentures (other than (a) dividends or
distributions in Common Stock, (b) any declaration of a dividend in connection
with the implementation of a shareholders' rights plan, or the issuance of
stock under any such plan in the future or the redemption or repurchase of any
such rights pursuant thereto, (c) payments under the Guarantee, and (d)
purchases of Common Stock related to rights under any of the Company's benefit
plans for its directors, officers or employees.

                                      23
<PAGE>   30

SECTION 5.7.     COVENANTS AS TO IBC CAPITAL.

         For so long as such Trust Securities of IBC Capital remain
outstanding, the Company will (i) maintain 100% direct or indirect ownership of
the Common Securities of IBC Capital; provided, however, that any permitted
successor of the Company under the Indenture may succeed to the Company's
ownership of the Common Securities, (ii) not to voluntarily terminate, wind up
or liquidate IBC Capital, except upon prior approval of the Federal Reserve if
then so required under applicable capital guidelines or policies of the Federal
Reserve, (iii) use its reasonable efforts, consistent with the terms of the
Trust Agreement, to cause IBC Capital (a) to remain a business trust, except in
connection with a distribution of Securities, the redemption of all of the
Trust Securities of IBC Capital or certain mergers, consolidations or
amalgamations, each as permitted by the Trust Agreement of IBC Capital, and (b)
to otherwise continue not to be treated as an association taxable as a
corporation or partnership for United States federal income tax purposes, and
(iv) to use its reasonable efforts, consistent with the terms of the Trust
Agreement, to cause each holder of Trust Securities to be treated as owning an
individual beneficial interest in the Securities.

         If the Debentures are to be issued as a Global Debenture in connection
with the distribution of the Debentures to the holders of the Preferred
Securities issued by the Trust upon a Dissolution Event, the Company will use
its best efforts to list such Debentures on the NASDAQ National Market or on
such other exchange as the Preferred Securities are then listed.

                                   ARTICLE VI
                       SECURITYHOLDERS' LISTS AND REPORTS
                         BY THE COMPANY AND THE TRUSTEE

SECTION 6.1.     COMPANY TO FURNISH TRUSTEE NAMES AND ADDRESSES OF
SECURITYHOLDERS.

         The Company will furnish or cause to be furnished to the Trustee (a)
on a quarterly basis on each regular record date (as defined in Section 2.5(a))
a list, in such form as the Trustee may reasonably require, of the names and
addresses of the holders of each series of Securities as of such regular record
date and (b) at such other times as the Trustee may request in writing within
30 days after the receipt by the Company of any such request, a list of similar
form and content as of a date not more than 15 days prior to the time such list
is furnished; provided, however, that, in either case, no such list need be
furnished for any series for which the Trustee shall be the Security Registrar.

SECTION 6.2.     PRESERVATION OF INFORMATION COMMUNICATIONS WITH
SECURITYHOLDERS.

         (a)     The Trustee shall preserve, in as current a form as is
reasonably practicable, all information as to the names and addresses of the
holders of Securities contained in the most recent list furnished to it as
provided in Section 6.1 and as to the names and addresses of holders of
Securities received by the Trustee in its capacity as Security Registrar (if
acting in such capacity).

         (b)     The Trustee may destroy any list furnished to it as provided
in Section 6.1 upon receipt of a new list so furnished.


                                      24
<PAGE>   31


         (c)     Securityholders may communicate as provided in Section 312(b)
of the Trust Indenture Act with other Securityholders with respect to their
rights under this Indenture or under the Securities.

SECTION 6.3.     REPORTS BY THE COMPANY.

         (a)     The Company covenants and agrees to file with the Trustee,
within 15 days after the Company is required to file the same with the
Commission, copies of the annual reports and of the information, documents and
other reports (or copies of such portions of any of the foregoing as the
Commission may from time to time by rules and regulations prescribe) that the
Company may be required to file with the Commission pursuant to Section 13 or
Section 15(d) of the Exchange Act; or, if the Company is not required to file
information, documents and other reports (or copies of such portions of any of
the foregoing as the Commission may from time to time by rules and regulations
prescribe) that the Company may be required to file with the Commission
pursuant to Section 13 or Section 15(d) of the Exchange Act; or, if the Company
is not required to file information, documents or reports pursuant to either of
such sections, then to file with the Trustee and the Commission, in accordance
with the rules and regulations prescribed from time to time by the Commission,
such of the supplementary and periodic information, documents and reports that
may be required pursuant to Section 13 of the Exchange Act, in respect of a
security listed and registered on the NASDAQ National Market or a national
securities exchange as may be prescribed from time to time in such rules and
regulations.

         (b)     The Company covenants and agrees to file with the Trustee and
the Commission, in accordance with the rules and regulations prescribed from to
time by the Commission, such additional information, documents and reports with
respect to compliance by the Company with the conditions and covenants provided
for in this Indenture as may be required from time to time by such rules and
regulations.

         (c)     The Company covenants and agrees to transmit by mail, first
class postage prepaid, or reputable over-night delivery service that provides
for evidence of receipt, to the Securityholders, as their names and addresses
appear upon the Security Register, within 30 days after the filing thereof with
the Trustee, such summaries of any information, documents and reports required
to be filed by the Company pursuant to subsections (a) and (b) of this Section
as may be required by rules and regulations prescribed from time to time by the
Commission.

SECTION 6.4.     REPORTS BY THE TRUSTEE.

         (a)     On or before July 15 in each year in which any of the
Securities are Outstanding, the Trustee shall transmit by mail, first class
postage prepaid, to the Securityholders, as their names and addresses appear
upon the Security Register, a brief report dated as of the preceding May 15, if
and to the extent required under Section 313(a) of the Trust Indenture Act.

         (b)     The Trustee shall comply with Section 313(b) and 313(c) of the
Trust Indenture Act.

                                      25
<PAGE>   32


         (c)     A copy of each such report shall, at the time of such
transmission to Securityholders, be filed by the Trustee with the Company, with
each stock exchange upon which any Securities are listed (if so listed) and
also with the Commission.  The Company agrees to notify the Trustee when any
Securities become listed on any stock exchange.

                                  ARTICLE VII
                  REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
                              ON EVENT OF DEFAULT

SECTION 7.1.     EVENTS OF DEFAULT.

         (a)     Whenever used herein with respect to the Debentures, "Event of
Default" means any one or more of the following events that has occurred and is
continuing:

                 (i)     the Company defaults in the payment of any installment 
         of interest upon any of the Debentures, as and when the same
         shall become due and payable, and continuance of such default for a
         period of 30 days; provided, however, that a valid extension of an
         interest payment period by the Company in accordance with the terms of
         this Indenture shall not constitute a default in the payment of
         interest for this purpose;

                (ii)    the Company defaults in the payment of the principal of 
         (or premium, if any, on) any of the Debentures as and when the
         same shall become due and payable whether at maturity, upon redemption,
         by declaration or otherwise; provided, however, that a valid extension
         of the maturity of such Securities in accordance with the terms of any
         indenture supplemental hereto shall not constitute a default in the
         payment of principal or premium, if any;

               (iii)   the Company fails to observe or perform any other of its
         covenants or agreements with respect to the Debentures for a
         period of 90 days after the date on which written notice of such
         failure, requiring the same to be remedied and stating that such notice
         is a "Notice of Default" hereunder, shall have been given to the
         Company by the Trustee, by registered or certified mail, or to the
         Company and the Trustee by the holders of at least 25% in principal
         amount of the Debentures at the time Outstanding;

               (iv)    the Company pursuant to or within the meaning of any
         Bankruptcy Law (i) commences a voluntary case, (ii) consents to
         the entry of an order for relief against it in an involuntary case,
         (iii) consents to the appointment of a Custodian of it or for all or
         substantially all of its property or (iv) makes a general assignment
         for the benefit of its creditors;

              (v)     a court of competent jurisdiction enters an order under 
         any Bankruptcy Law that (i) is for relief against the Company in
         an involuntary case, (ii) appoints a Custodian of the Company for all
         or substantially all of its property, or (iii) orders the liquidation
         of the


                                      26
<PAGE>   33


         Company or the Guarantor, and the order or decree remains
         unstayed and in effect for 90 days; or

                 (vi)    IBC Capital shall have voluntarily or involuntarily 
         dissolved, wound-up its business or otherwise terminated its
         existence except in connection with (i) the distribution of Securities
         to holders of Trust Securities in liquidation of their interests in IBC
         Capital, (ii) the redemption of all of the outstanding Trust Securities
         of IBC Capital or (iii) certain mergers, consolidations or
         amalgamation, each as permitted by the Trust Agreement of IBC Capital.

         (b)     In each and every such case, unless the principal of all the
Securities shall have already become due and payable, either the Trustee or the
holders of not less than 25% in aggregate principal amount of the Securities
then Outstanding hereunder, by notice in writing to the Company (and to the
Trustee if given by such Securityholders) may declare the principal of all the
Securities to be due and payable immediately, and upon any such declaration the
same shall become and shall be immediately due and payable, notwithstanding
anything contained in this Indenture or in the Securities.

         (c)     At any time after the principal of the Securities shall have
been so declared due and payable, and before any judgment or decree for the
payment of the moneys due shall have been obtained or entered as hereinafter
provided, the holders of a majority in aggregate principal amount of the
Securities then Outstanding hereunder, by written notice to the Company and the
Trustee, may rescind and annul such declaration and its consequences if: (i)
the Company has paid or deposited with the Trustee a sum sufficient to pay all
matured installments of interest upon all the Securities of that series and the
principal of (and premium, if any, on) any and all Debentures that shall have
become due otherwise than by acceleration (with interest upon such  principal
and premium, if any, and, to the extent that such payment is enforceable under
applicable law, upon overdue installments of interest, at the rate per annum
expressed in the Debentures to the date of such payment or deposit) and the
amount payable to the Trustee under Section 9.6, and (ii) any and all Events of
Default under the Indenture, other than the nonpayment of principal on
Debentures that shall not have become due by their terms, shall have been
remedied or waived as provided in Section 7.6.

         No such rescission and annulment shall extend to or shall affect any
subsequent default or impair any right consequent thereon.

         (d)     In case the Trustee shall have proceeded to enforce any right
with respect to the Debentures under this Indenture and such proceedings shall
have been discontinued or abandoned because of such rescission or annulment or
for any other reason or shall have been determined adversely to the Trustee,
then and in every such case the Company and the Trustee shall be restored
respectively to their former positions and rights hereunder, and all rights,
remedies and powers of the Company and the Trustee shall continue as though no
such proceedings had been taken.

SECTION 7.2.     COLLECTION OF INDEBTEDNESS AND SUITS FOR ENFORCEMENT BY
TRUSTEE.

                                      27
<PAGE>   34


         (a)     The Company covenants that (1) in case it shall default in the
payment of any installment of interest on any of the Securities, and such
default shall have continued for a period of 90 Business Days, or (2) in case
it shall default in the payment of the principal of (or premium, if any, on)
any of the Securities when the same shall have become due and payable, whether
upon maturity of the Securities or upon redemption or upon declaration or
otherwise, then, upon demand of the Trustee the Guarantor (as defined in the
Preferred Securities Guarantee) will pay to the Trustee, for the benefit of the
holders of the Securities, the whole amount that then shall have been become
due and payable on all such Securities for principal (and premium, if any) or
interest, or both, as the case may be, with interest upon the overdue principal
(and premium, if any) and (to the extent that payment of such interest is
enforceable under applicable law and, if the Securities are held by a IBC
Capital or a trustee of  such trust, without duplication of any other amounts
paid by IBC Capital or trustee in respect thereof) upon overdue installments of
interest at the rate per annum expressed in the Securities; and, in addition
thereto, such further amount as shall be sufficient to cover the costs and
expenses of collection, and the amount payable to the Trustee under Section
9.6.

         (b)     If the Company shall fail to pay such amounts forthwith upon
such demand, the Trustee, in its own name and as trustee of an express trust,
shall be entitled and empowered to institute any action or proceedings at law
or in equity for the collection of the sums so due and unpaid, and may
prosecute any such action or proceeding to judgment or final decree, and may
enforce any such judgment or final decree against the Company or other obligor
upon the Securities and collect the moneys adjudged or decreed to be payable in
the manner provided by law out of the property of the Company or other obligor
upon the Securities, wherever situated.

         (c)     In case of any receivership, insolvency, liquidation,
bankruptcy, reorganization, readjustment, arrangement, composition or judicial
proceedings affecting the Company or the creditors or property of either, the
Trustee shall have power to intervene in such proceedings and take any action
therein that may be permitted by the court and shall (except as may be
otherwise provided by law) be entitled to file such proofs of claim and other
papers and documents as may be necessary or advisable in order to have the
claims of the Trustee and of the holders of the Securities allowed for the
entire amount due and payable by the Company under the Indenture at the date of
institution of such proceedings and for any additional amount that may become
due and payable by the Company after such date, and to collect and receive any
moneys or other property payable or deliverable on any such claim, and to
distribute the same after the deduction of the amount payable to the Trustee
under Section 9.6; and any receiver, assignee or trustee in bankruptcy or
reorganization is hereby authorized by each of the holders of the Securities to
make such payments to the Trustee, and, in the event that the Trustee shall
consent to the making of such payments directly to such Securityholders, to pay
to the Trustee any amount due it under Section 9.6.

         (d)     All rights of action and of asserting claims under this
Indenture, or under any of the terms established with respect to Securities,
may be enforced by the Trustee without the possession of any of such
Securities, or the production thereof at any trial or other proceeding relative
thereto, and any such suit or proceeding instituted by the Trustee shall be
brought in its own name as trustee  of an express trust, and any recovery of
judgment shall, after provision for payment to the Trustee of any amounts due
under Section 9.6, be for the ratable benefit of the holders of the Securities.

                                      28
<PAGE>   35


         In case of an Event of Default hereunder, the Trustee may in its
discretion proceed to protect and enforce the rights vested in it by this
Indenture by such appropriate judicial proceedings as the Trustee shall deem
most effectual to protect and enforce any of such rights, either at law or in
equity or in bankruptcy or otherwise, whether for the specific enforcement of
any covenant or agreement contained in the Indenture or in aid of the exercise
of any power granted in this Indenture, or to enforce any other legal or
equitable right vested in the Trustee by this Indenture or by law.

         Nothing contained herein shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Securityholder any
plan of reorganization, arrangement, adjustment or composition affecting the
Securities of that series or the rights of any holder thereof or to authorize
the Trustee to vote in respect of the claim of any Securityholder in any such
proceeding.

SECTION 7.3.     APPLICATION OF MONEYS COLLECTED.

         Any moneys collected by the Trustee pursuant to this Article with
respect to the Securities shall be applied in the following order, at the date
or dates fixed by the Trustee and, in case of the distribution of such moneys
on account of principal (or premium, if any) or interest, upon presentation of
the Securities, and notation thereon the payment, if only partially paid, and
upon surrender thereof if fully paid:

         FIRST:  To the payment of costs and expenses of collection and of all
    amounts payable to the Trustee under Section 9.6;

         SECOND:  To the payment of all Senior Indebtedness of the Company if
    and to the extent required by Article Sixteen; and

         THIRD:  To the payment of the amounts then due and unpaid upon
    Securities for principal (and premium, if any) and interest, in respect
    of which or for the benefit of which such money has been collected, ratably,
    without preference or priority of any kind, according to the amounts due and
    payable on such Securities for principal (and premium, if any) and interest,
    respectively.

SECTION 7.4.     LIMITATION ON SUITS.

         No holder of any Security shall have any right by virtue or by
availing of any provision of this Indenture to institute any suit, action or
proceeding in equity or at law upon or under or with respect to this Indenture
or for the appointment of a receiver or trustee, or for any other remedy
hereunder, unless (i) such holder previously shall have given to the Trustee
written notice of an Event of Default and of the continuance thereof with
respect to the Securities specifying such Event of Default, as hereinbefore
provided; (ii) the holders of not less than 25% in aggregate principal amount
of the Securities then Outstanding shall have made written request upon the
Trustee to institute such action, suit or proceeding in its own name as trustee
hereunder; (iii) such holder or holders shall have offered to the Trustee such
reasonable indemnity as it may require against the

                                      29
<PAGE>   36


costs, expenses and liabilities to be incurred therein or thereby; and (iv) the
Trustee for 60 days after its receipt of such notice, request and offer of
indemnity, shall have failed to institute any such action, suit or proceeding
and (v) during such 60 day period, the holders of a majority in principal
amount of the Securities of that series do not give the Trustee a direction
inconsistent with the request.

         Notwithstanding anything contained herein to the contrary, any other
provisions of this Indenture, the right of any holder of any Security to
receive payment of the principal of (and premium, if any) and interest on such
Security, as therein provided, on or after the respective due dates expressed
in such Security (or in the case of redemption, on the redemption date), or to
institute suit for the enforcement of any such payment on or after such
respective dates or redemption date, shall not be impaired or affected without
the consent of such holder and by accepting a Security hereunder it is
expressly understood, intended and covenanted by the taker and holder of every
Security with every other such taker and holder and the Trustee, that no one or
more holders of Securities shall have any right in any manner whatsoever by
virtue or by availing of any provision of this Indenture to affect, disturb or
prejudice the rights of the holders of any other of such Securities, or to
obtain or seek to obtain priority over or preference to any other such holder,
or to enforce any right under this Indenture, except in the manner herein
provided and for the equal, ratable and common benefit of all holders of
Securities.  For the protection and enforcement of the provisions of this
Section, each and every Securityholder and the Trustee shall be entitled to
such relief as can be given either at law or in equity.

SECTION 7.5.     RIGHTS AND REMEDIES CUMULATIVE; DELAY OR OMISSION NOT WAIVER.

         (a)     Except as otherwise provided in Section 2.9, all powers and
remedies given by this Article to the Trustee or to the Securityholders shall,
to the extent permitted by law, be deemed cumulative and not exclusive of any
other powers and remedies available to the Trustee or the holders of the
Securities, by judicial proceedings or otherwise, to enforce the performance or
observance of the covenants and agreements contained in this Indenture or
otherwise established with respect to such Securities.

         (b)     No delay or omission of the Trustee or of any holder of any of
the Securities to exercise any right or power accruing upon any Event of
Default occurring and continuing as aforesaid shall impair any such right or
power, or shall be construed to be a waiver of any such default or on
acquiescence therein; and, subject to the provisions of Section 7.4, every
power and remedy given by this Article or by law to the Trustee or the
Securityholders may be exercised from time to time, and as often as shall be
deemed expedient, by the Trustee or by the Securityholders.

SECTION 7.6.     CONTROL BY SECURITYHOLDERS.

         The holders of a majority in aggregate principal amount of the
Securities at the time Outstanding, determined in accordance with Section 10.4,
shall have the right to direct the time, method and place of conducting any
proceeding for any remedy available to the Trustee, or exercising any trust or
power conferred on the Trustee; provided, however, that such direction shall

                                      30
<PAGE>   37


not be in conflict with any rule of law or with this Indenture or be unduly
prejudicial to the rights of holders of Securities of any other series at the
time Outstanding determined in accordance with Section 10.4 hereof.  Subject to
the provisions of Section 9.1, the Trustee shall have the right to decline to
follow any such direction if the Trustee in good faith shall, by a Responsible
Officer or Officers of the Trustee, determine that the proceeding so directed
would involve the Trustee in personal liability.  The holders of a majority in
aggregate principal amount of the Securities at the time Outstanding affected
thereby, determined in accordance with Section 10.4, may on behalf of the
holders of all of the Securities waive any past default in the performance of
any of the covenants contained herein and its consequences, except (i) a
default in the payment of the principal of, or premium, if any, or interest on,
any of the Securities as and when the same shall become due by the terms of
such Securities otherwise than by acceleration (unless such default has been
cured and a sum sufficient to pay all matured installments of interest and
principal and any premium has been deposited with the Trustee (in accordance
with Section 7.1(c)), (ii) a default in the covenants contained in Section 5.6
or (iii) in respect of a covenant or provision hereof which under Article
Eleven cannot be modified or amended without the consent of the Holder of each
Outstanding Security affected; provided, however, that if the Debentures are
held by a IBC Capital or a trustee of such trust, such waiver or modification
to such waiver shall not be effective until the holders of a majority in
liquidation preference of Trust Securities of IBC Capital shall have consented
to such waiver or modification to such waiver; provided further, that if the
consent of the Holder of each Outstanding Security is required, such waiver
shall not be effective until each holder of the Trust Securities of IBC Capital
shall have consented to such waiver.  Upon any such waiver, the default covered
thereby shall be deemed to be cured for all purposes of this Indenture and the
Company, the Trustee and the holders of the Securities shall be restored to
their former positions and rights hereunder, respectively; but no such waiver
shall extend to any subsequent or other default or impair any right consequent
thereon.

SECTION 7.7.     UNDERTAKING TO PAY COSTS.

         All parties to this Indenture agree, and each holder of any Securities
by such holder's acceptance thereof shall be deemed to have agreed, that any
court may in its discretion require, in any suit for the enforcement of any
right or remedy under this Indenture, or in any suit against the Trustee for
any action taken or omitted by it as Trustee, the filing by any party litigant
in such suit of an undertaking to pay the costs of such suit, and that such
court may in its discretion assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in such suit, having due regard to
the merits and good faith of the claims or defenses made by such party
litigant; but the provisions of this Section shall not apply to any suit
instituted by the Trustee, to any suit instituted by any Securityholder, or
group of Securityholders, holding more than 10% in aggregate principal amount
of the Outstanding Debentures, or to any suit instituted by any Securityholder
for the enforcement of the payment of the principal of (or premium, if any) or
interest on any Debentures, on or after the respective due dates expressed in
such Debenture or established pursuant to this Indenture.

                                  ARTICLE VIII
                      FORM OF DEBENTURE AND ORIGINAL ISSUE


                                      31
<PAGE>   38


SECTION 8.1.     FORM OF DEBENTURE.

         The Debenture and the Trustee's Certificate of Authentication to be
endorsed thereon are to be substantially in the forms contained as Exhibit A to
this Indenture, attached hereto and incorporated herein by reference.

SECTION 8.2.     ORIGINAL ISSUE OF DEBENTURES.

         Debentures in the aggregate principal amount of $17,783,500 may, upon
execution of this Indenture, be executed by the Company and delivered to the
Trustee for authentication, and the Trustee shall thereupon authenticate and
deliver said Debentures to or upon the written order of the  Company, signed by
its Chairman, its Vice Chairman, its President, or any Vice President and its
Treasurer or an Assistant Treasurer, without any further action by the Company.

                                   ARTICLE IX
                             CONCERNING THE TRUSTEE

SECTION 9.1.     CERTAIN DUTIES AND RESPONSIBILITIES OF TRUSTEE.

         (a)     The Trustee prior to the occurrence of an Event of Default
with respect to the Securities and after the curing of all Events of Default
with respect to the Debentures that may have occurred, shall undertake to
perform with respect to the Securities of such series such duties and only such
duties as are specifically set forth in this Indenture, and no implied
covenants shall be read into this Indenture against the Trustee.  In case an
Event of Default with respect to the Debentures has occurred (that has not been
cured or waived), the Trustee shall exercise with respect to Debentures such of
the rights and powers vested in it by this Indenture, and use the same degree
of care and skill in their exercise, as a prudent man would exercise or use
under the circumstances in the conduct of his own affairs.

         (b)     No provision of this Indenture shall be construed to relieve
the Trustee from liability for its own negligent action, its own negligent
failure to act, or its own willful misconduct, except that:

                 (1)     prior to the occurrence of an Event of Default with 
         respect to the Debentures and after the curing or waiving of all
         such Events of Default with respect to the Debentures that may have
         occurred:

                         (i)     the duties and obligations of the Trustee 
              shall with respect to the Debentures be determined solely by the
              express provisions of this Indenture, and the Trustee shall not be
              liable with respect to the Debentures except for the performance
              of such duties and obligations as are specifically set forth in
              this Indenture, and no implied covenants or obligations shall be
              read into this Indenture against the Trustee; and


                                      32
<PAGE>   39


                         (ii)    in the absence of bad faith on the part of
              the Trustee, the Trustee may with respect to the Debentures
              conclusively rely, as to the truth of the statements and the
              correctness of the opinions expressed therein, upon any
              certificates or opinions furnished to the Trustee and conforming
              to the requirements of this Indenture; but in the case of any such
              certificates or opinions that by any provision hereof are
              specifically required to be furnished to the Trustee, the Trustee
              shall be under a duty to examine the same to determine whether or
              not they conform the requirements of this Indenture;

         (2)     the Trustee shall not be liable for any error of judgment made
in good faith by a Responsible Officer or Responsible Officers of the Trustee,
unless it shall be proved that the Trustee, was negligent in ascertaining the
pertinent facts;

         (3)     the Trustee shall not be liable with respect to any action
taken or omitted to be taken by it in good faith in accordance with the
direction of the holders of not less than a majority in principal amount of the
Debentures at the time Outstanding relating to the time, method and place of
conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred upon the Trustee under this Indenture
with respect to the Debentures; and

         (4)     none of the provisions contained in this Indenture shall
require the Trustee to expend or risk its own funds or otherwise incur personal
financial liability in the performance of any of its duties or in the exercise
of any of its rights or powers, if there is reasonable ground for believing
that the repayment of such funds or liability is not reasonably assured to it
under the terms of this Indenture or adequate indemnity against such risk is
not reasonably assured to it.


                                      33
<PAGE>   40

SECTION 9.2      NOTICE OF DEFAULTS.

         Within 90 days after actual knowledge by a Responsible Officer of the
Trustee of the occurrence of any default hereunder with respect to the
Securities, the Trustee shall transmit by mail to all holders of Securities, as
their names and addresses appear in the Securities Register, notice of such
default, unless such default shall have been cured or waived; provided,
however, that, except in the case of a default in the payment of the principal
or (or premium, if any) or interest (including any Additional Interest) on any
Security, the Trustee shall be protected in withholding such notice if and so
long as the board of directors, the executive committee or a trust committee of
the directors and/or responsible officers of the Trustee determines in good
faith that the withholding of such notice is in the interests of the holders of
such Securities; and provided, further, that in the case of any default of the
character specified in Section 7.1(a)(iii), no such notice to holder of
Securities shall be given until at least 30 days after the occurrence thereof.
For the purposes of this Section, the term "default" means any event which is,
or after notice or lapse of time or both would become, an Event of Default with
respect to the Securities.

SECTION 9.3.     CERTAIN RIGHTS OF TRUSTEE.

         Except as otherwise provided in Section 9.1:

         (a)     The Trustee may rely and shall be protected in acting or
refraining from acting upon any resolution, certificate, statement, instrument,
opinion, report, notice, request, consent, order, approval, bond, security or
other paper or document believed by it to be genuine and to have been signed or
presented by the proper party or parties;

         (b)     Any request, direction, order or demand of the Company
mentioned herein shall be sufficiently evidenced by a Board Resolution or an
instrument signed in the name of the Company by the President or any Vice
President and by the Secretary or an Assistant Secretary or the Treasurer or an
Assistant Treasurer thereof (unless other evidence in respect thereof is
specifically prescribed herein);

         (c)     The Trustee shall not be deemed to have knowledge of a default
or an Event of Default, other than an Event of Default specified in Section
7.1(a) (i) or (ii), unless and until it receives notification of such Event of
Default from the Company or by holders of at least 25% of the aggregate
principal amount of the Securities at the time Outstanding;

         (d)     The Trustee may consult with counsel and the written advice of
such counsel or any Opinion of Counsel shall be full and complete authorization
and protection in respect of any action taken or suffered or omitted hereunder
in good faith and in reliance thereon;

         (e)     The Trustee shall be under no obligation to exercise any of
the rights or powers vested in it by this Indenture at the request, order or
direction of any of the Securityholders, pursuant to the provisions of this
Indenture, unless such Securityholders shall have offered to the Trustee
reasonable security or indemnity against the costs, expenses and liabilities
that may be incurred


                                      34
<PAGE>   41


therein or thereby; nothing contained herein shall, however, relieve the
Trustee of the obligation, upon the occurrence of an Event of Default with
respect to the Securities (that has not been cured or waived) to exercise with
respect to the Securities such of the rights and powers vested in it by this
Indenture, and to use the same degree of care and skill in their exercise, as a
prudent man would exercise or use under the circumstances in the conduct of his
own affairs;

         (f)     The Trustee shall not be liable for any action taken or
omitted to be taken by it in good faith and believed by it to be authorized or
within the discretion or rights or powers conferred upon it by this Indenture;

         (g)     The Trustee shall not be bound to make any investigation into
the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, consent, order, approval, bond,
security, or other papers or documents, unless requested in writing so to do by
the holders of not less than a majority in principal amount of the Outstanding
Securities affected thereby (determined as provided in Section 10.4); provided,
however, that if the payment within a  reasonable time to the Trustee of the
costs, expenses or liabilities likely to be incurred by it in the making of
such investigation is, in the opinion of the Trustee, not reasonably assured to
the Trustee by the security afforded to it by the terms of this Indenture, the
Trustee may require reasonable indemnity against such costs, expenses or
liabilities as a condition to so proceeding.  The reasonable expense of every
such examination shall be paid by the Company or, if paid by the Trustee, shall
be repaid by the Company upon demand; and

         (h)     The Trustee may execute any of the trusts or powers hereunder
or perform any duties hereunder either directly or by or through agents or
attorneys and the Trustee shall not be responsible for any misconduct or
negligence on the part of any agent or attorney appointed with due care by it
hereunder.

SECTION 9.4.     TRUSTEE NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OR
SECURITIES.

         (a)     The recitals contained herein and in the Securities shall be
taken as the statements of the Company and the Trustee assumes no
responsibility for the correctness of the same.

         (b)     The Trustee makes no representations as to the validity or
sufficiency of this Indenture or of the Securities.

         (c)     The Trustee shall not be accountable for the use or
application by the Company of any of the Securities or of the proceeds of such
Securities, or for the use or application of any moneys paid over by the
Trustee in accordance with any provision of this Indenture, or for the use or
application of any moneys received by any paying agent other than the Trustee.

                                      35
<PAGE>   42

SECTION 9.5.     MAY HOLD SECURITIES.

         The Trustee or any paying agent or Security Registrar, in its
individual or any other capacity, may become the owner or pledgee of Securities
with the same rights it would have if it were not Trustee, paying agent or
Security Registrar.

SECTION 9.6.     MONIES HELD IN TRUST.

         Subject to the provisions of Section 13.5, all monies received by the
Trustee shall, until used or applied as herein provided, be held in trust for
the purposes for which they were received, but need not be segregated from
other funds except to the extent required by law.  The Trustee shall be under
no liability for interest on any monies received by it hereunder except such as
it may agree with the Company to pay thereon.

SECTION 9.7.     COMPENSATION AND REIMBURSEMENT.

         (a)     The Company covenants and agrees to pay to the Trustee, and
the Trustee shall be entitled to, such reasonable compensation (which shall not
be limited by any provision of law in regard to the compensation of a trustee
of an express trust), as the Company and the Trustee may from time to time
agree in writing, for all services rendered by it in the execution of the
trusts hereby created and in the exercise and performance of any of the powers
and duties hereunder of the Trustee, and, except as otherwise expressly
provided herein, the Company will pay or reimburse the Trustee upon its request
for all reasonable expenses, disbursements and advances incurred or made by the
Trustee in accordance with any of the provisions of this Indenture (including
the reasonable compensation and the expenses and disbursements of its counsel
and of all Persons not regularly in its employ) except any such expense,
disbursement or advance as may arise from its negligence or bad faith. The
Company also covenants to indemnify the Trustee (and its officers, agents,
directors and employees) for, and to hold it harmless against, any loss,
liability or expense incurred without negligence or bad faith on the part of
the Trustee and arising out of or in connection with the acceptance or
administration of this trust, including the costs and expenses of defending
itself against any claim of liability in the premises.

         (b)     The obligations of the Company under this Section to
compensate and indemnify the Trustee and to pay or reimburse the Trustee for
expenses, disbursements and advances shall constitute additional indebtedness
hereunder.  Such additional indebtedness shall be secured by a lien prior to
that of the Securities upon all property and funds held or collected by the
Trustee as such, except funds held in trust for the benefit of the holders of
particular Securities.

SECTION 9.8.     RELIANCE ON OFFICERS' CERTIFICATE.

         Except as otherwise provided in Section 9.1 whenever in the
administration of the provisions of this Indenture the Trustee shall deem it
necessary or desirable that a matter be proved or established prior to taking
or suffering or omitting to take any action hereunder, such matter (unless

                                      36
<PAGE>   43


other evidence in respect thereof be herein specifically prescribed) may, in
the absence of negligence or bad faith on the part of the Trustee, be deemed to
be conclusively proved and established by an Officers' Certificate delivered to
the Trustee and such certificate, in the absence of negligence or bad faith on
the part of the Trustee, shall be full warrant to the Trustee for any action
taken, suffered or omitted to be taken by it under the provisions of this
Indenture upon the faith thereof.

SECTION 9.9.     DISQUALIFICATION:  CONFLICTING INTERESTS.

         If the Trustee has or shall acquire any "conflicting interest" within
the meaning of Section 310(b) of the Trust Indenture Act, the Trustee and the
Company shall in all respects comply with the provisions of Section 310(b) of
the Trust Indenture Act.

SECTION 9.10.    CORPORATE TRUSTEE REQUIRED; ELIGIBILITY.

         There shall at all times be a Trustee with respect to the Debentures
issued hereunder which shall at all times be a corporation organized and doing
business under the laws of the United States of America or any State or
Territory thereof or of the District of Columbia, or a corporation or other
Person permitted to act as trustee by the Commission, authorized under such
laws to exercise corporate trust powers, having a combined capital and surplus
of at least 50 million U.S. dollars ($50,000,000), and subject to supervision
or examination by Federal, State, Territorial, or District of Columbia
authority.  If such corporation publishes reports of condition at least
annually, pursuant to law or to the requirements of the aforesaid supervising
or examining authority, then for the purposes of this Section, the combined
capital and surplus of such corporation shall be deemed to be its combined
capital and surplus as set forth in its most recent report of condition so
published.  The Company may not, nor may any Person directly or indirectly
controlling, controlled by, or under common control with the Company, serve as
Trustee.  In case at any time the Trustee shall cease to be eligible in
accordance with the provisions of this Section, the Trustee shall resign
immediately in the manner and with the effect specified in Section 9.11.

SECTION 9.11.    RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR.

         (a)     The Trustee or any successor hereafter appointed, may at any
time resign with respect to the Securities by giving written notice thereof to
the Company and by transmitting notice of resignation by mail, first class
postage prepaid, to the Securityholders, as their names and addresses appear
upon the Security Register.  Upon receiving such notice of resignation, the
Company shall promptly appoint a successor trustee with respect to Securities
by written instrument, in duplicate, executed by order of the Board of
Directors, one copy of which instrument shall be delivered to the resigning
Trustee and one copy to the successor trustee.  If no successor trustee shall
have been so appointed and have accepted appointment within 30 days after the
mailing of such notice of resignation, the resigning Trustee may petition any
court of competent jurisdiction for the appointment of a successor trustee with
respect to Securities, or any Securityholder who has been a bona fide holder of
a Security or Securities for at least six months may, subject to the provisions
of Section 9.9, on behalf of himself and all others similarly situated,
petition any such court for the

                                      37
<PAGE>   44


appointment of a successor trustee.  Such court may thereupon after such
notice, if any, as it may deem proper and prescribe, appoint a successor
trustee.

         (b)     In case at any time any one of the following shall occur:

                 (i)     the Trustee shall fail to comply with the provisions of
         subsection (a) of Section 9.9 after written request therefor by
         the Company or the Guarantor or by any Securityholder who has been a
         bona fide holder of a Security or Securities for at least six  months;
         or

                (ii)     the Trustee shall cease to be eligible in accordance 
         with the provisions of Section 9.10 and shall fail to resign
         after written request therefor by the Company or by any such
         Securityholder; or

               (iii)     the Trustee shall become incapable of acting, or shall
         be adjudged a bankrupt or insolvent, or commence a voluntary
         bankruptcy proceeding, or a receiver of the Trustee or of its property
         shall be appointed or consented to, or any public officer shall take
         charge or control of the Trustee or of its property or affairs for the
         purpose of rehabilitation, conservation or liquidation, then, in any
         such case, the Company may remove the Trustee with respect to all
         Securities and appoint a successor trustee by written instrument, in
         duplicate, executed by order of the Board of Directors, one copy of
         which instrument shall be delivered to the Trustee so removed and one
         copy to the successor trustee, or, subject to the provisions of Section
         9.9, unless the Trustee's duty to resign is stayed as provided herein,
         any Securityholder who has been a bona fide holder of a Security or
         Securities for at least six months may, on behalf of that holder and
         all others similarly situated, petition any court of competent
         jurisdiction for the removal of the Trustee and the appointment of a
         successor trustee.  Such court may thereupon after such notice, if any,
         as it may deem proper and prescribe, remove the Trustee and appoint a
         successor trustee.

         (c)     The holders of a majority in aggregate principal amount of the
Securities at the time Outstanding may at any time remove the Trustee by so
notifying the Trustee and the Company and may appoint a successor Trustee with
the consent of the Company.

         (d)     Any resignation or removal of the Trustee and appointment of a
successor trustee with respect to the Securities pursuant to any of the
provisions of this Section shall become effective upon acceptance of
appointment by the successor trustee as provided in Section 9.12.

         (e)     Any successor trustee appointed pursuant to this Section may
be appointed with respect to the Securities, and at any time there shall be
only one Trustee with respect to the Securities.


                                      38
<PAGE>   45

SECTION 9.12.    ACCEPTANCE OF APPOINTMENT BY SUCCESSOR.

         (a)     In case of the appointment hereunder of a successor trustee
with respect to the Securities, every such successor trustee so appointed shall
execute, acknowledge and deliver to the Company and to the retiring Trustee an
instrument accepting such appointment, and thereupon the resignation or removal
of the retiring Trustee shall become effective and such successor trustee,
without any further act, deed or conveyance, shall become vested with all the
rights, powers, trusts and duties of the retiring Trustee; but, on the request
of the Company or the successor trustee, such retiring Trustee shall, upon
payment of its charges, execute and deliver an instrument transferring to such
successor trustee all the rights, powers, and trusts of the retiring Trustee
and shall duly assign, transfer and deliver to such successor trustee all
property and money held by such retiring Trustee hereunder.

         (b)     Upon request of any such successor trustee, the Company shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor trustee all such rights, powers and trusts
referred to in paragraph (a) of this Section, as the case may be.

         (c)     No successor trustee shall accept its appointment unless at
the time of such acceptance such successor trustee shall be qualified and
eligible under this Article.

         (d)     Upon acceptance of appointment by a successor trustee as
provided in this Section, the Company shall transmit notice of the succession
of such trustee hereunder by mail, first class postage prepaid, to the
Securityholders, as their names and addresses appear upon the Security
Register.  If the Company fails to transmit such notice within ten days after
acceptance of appointment by the successor trustee, the successor trustee shall
cause such notice to be transmitted at the expense of the Company and the
Guarantor.

SECTION 9.13.    MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO BUSINESS.

         Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or
any corporation succeeding to substantially all of the corporate trust business
of the Trustee, shall be the successor of the Trustee hereunder, provided that
such corporation shall be qualified under the provisions of Section 9.9 and
eligible under the provisions of Section 9.10, without the execution or filing
of any paper or any further act on the part of any of the parties hereto,
anything herein to the contrary notwithstanding.  In case any Securities shall
have been authenticated, but not delivered, by the Trustee then in office, any
successor by merger, conversion or consolidation to such authenticating Trustee
may adopt such authentication and deliver the Securities so authenticated with
the same effect as if such successor Trustee had itself authenticated such
Securities.


                                      39
<PAGE>   46

SECTION 9.14.    PREFERENTIAL COLLECTION OF CLAIMS AGAINST THE COMPANY.

         The Trustee shall comply with Section 311(a) of the Trust Indenture
Act, excluding any creditor relationship described in Section 311(b) of the
Trust Indenture Act.  A Trustee who has resigned or been removed shall be
subject to Section 311(a) of the Trust Indenture Act to the extent included
therein.

                                   ARTICLE X
                         CONCERNING THE SECURITYHOLDERS

SECTION 10.1.    EVIDENCE OF ACTION BY SECURITYHOLDERS.

         Whenever in this Indenture it is provided that the holders of a
majority or specified percentage in aggregate principal amount of the
Securities may take any action (including the making of any demand or request,
the giving of any notice, consent or waiver or the taking of any other action),
the fact that at the time of taking any such action the holders of such
majority or specified percentage have joined therein may be evidenced by any
instrument or any number of instruments of similar tenor executed by such
holders of Securities in Person or by agent or proxy appointed in writing.

         If the Company shall solicit from the Securityholders any request,
demand, authorization, direction, notice, consent, waiver or other action, the
Company may, at its option, as evidenced by an Officers' Certificate, fix in
advance a record date for the determination of Securityholders entitled to give
such request, demand, authorization, direction, notice, consent, waiver or
other action, but the Company shall have no obligation to do so.  If such a
record date is fixed, such request, demand, authorization, direction, notice,
consent, waiver or other action may be given before or after the record date,
but only the Securityholders of record at the close of business on the record
date shall be deemed to be Securityholders for the purposes of determining
whether Securityholders of the requisite proportion of Outstanding Securities
have authorized or agreed or consented to such request, demand, authorization,
direction, notice, consent, waiver or other action, and for that purpose the
Outstanding Securities shall be computed as of the record date; provided,
however, that no such authorization, agreement or consent by such
Securityholders on the record date shall be deemed effective unless it shall
become effective pursuant to the provisions of this Indenture not later than
six months after the record date.

SECTION 10.2.    PROOF OF EXECUTION BY SECURITYHOLDERS.

         Subject to the provisions of Section 10.1, proof of the execution of
any instrument by a Securityholder (such proof will not require notarization)
or his agent or proxy and proof of the holding by any Person of any of the
Securities shall be sufficient if made in the following manner:

         (a)     The fact and date of the execution by any such Person of any
instrument may be proved in any reasonable manner acceptable to the Trustee.

                                      40
<PAGE>   47


         (b)     The ownership of Securities shall be proved by the Security
Register of such Securities or by a certificate of the Security Registrar
thereof.

         (c)     The Trustee may require such additional proof of any matter
referred to in this Section as it shall deem necessary.

SECTION 10.3.    WHO MAY BE DEEMED OWNERS.

         Prior to the due presentment for registration of transfer of any
Security, the Company, the Trustee, any paying agent and any Security Registrar
may deem and treat the Person in whose name such Security shall be registered
upon the books of the Company as the absolute owner of such Security (whether
or not such Security shall be overdue and notwithstanding any notice of
ownership or writing thereon made by anyone other than the Security Registrar)
for the purpose of receiving payment of or on account of the principal of,
premium, if any, and (subject to Section 2.3) interest on such Security and for
all other purposes; and neither the Company nor the Trustee nor any paying
agent nor any Security Registrar shall be affected by any notice to the
contrary.

SECTION 10.4.    CERTAIN SECURITIES OWNED BY COMPANY DISREGARDED.

         In determining whether the holders of the requisite aggregate
principal amount of Securities have concurred in any direction, consent of
waiver under this Indenture, the Securities that are owned by the Company or
any other obligor on the Securities or by any Person directly or indirectly
controlling or controlled by or under common control with the Company or any
other obligor on the Securities shall be disregarded and deemed not to be
Outstanding for the purpose of any such determination, except that for the
purpose of determining whether the Trustee shall be protected in relying on any
such direction, consent or waiver, only Securities that the Trustee actually
knows are so owned shall be so disregarded.  The Securities so owned that have
been pledged in good faith may be regarded as Outstanding for the purposes of
this Section, if the pledgee shall establish to the satisfaction of the Trustee
the pledgee's right so to act with respect to such Securities and that the
pledgee is not a Person directly or indirectly controlling or controlled by or
under direct or indirect common control with the Company or any such other
obligor.  In case of a dispute as to such right, any decision by the Trustee
taken upon the advice of counsel shall be full protection to the Trustee.

SECTION 10.5.    ACTIONS BINDING ON FUTURE SECURITYHOLDERS.

         At any time prior to (but not after) the evidencing to the Trustee, as
provided in Section 10.1, of the taking of any action by the holders of the
majority or percentage in aggregate principal amount of the Securities
specified in this Indenture in connection with such action, any holder of a
Security that is shown by the evidence to be included in the Securities the
holders of which have consented to such action may, by filing written notice
with the Trustee, and upon proof of holding as provided in Section 10.2, revoke
such action so far as concerns such Security. Except as aforesaid any such
action taken by the holder of any Security shall be conclusive and binding upon
such holder and upon all future holders and owners of such Security, and of any
Security issued in exchange therefor, on registration of transfer thereof or in
place thereof, irrespective of whether or


                                      41
<PAGE>   48


not any notation in regard thereto is made upon such Security.  Any action
taken by the holders of the majority or percentage in aggregate principal
amount of the Securities specified in this Indenture in connection with such
action shall be conclusively binding upon the Company, the Trustee and the
holders of all the Securities.

                                   ARTICLE XI
                            SUPPLEMENTAL INDENTURES

SECTION 11.1.    SUPPLEMENTAL INDENTURES WITHOUT THE CONSENT OF
SECURITYHOLDERS.

         In addition to any supplemental indenture otherwise authorized by this
Indenture, the Company and the Trustee may from time to time and at any time
enter into an indenture or indentures supplemental hereto (which shall conform
to the provisions of the Trust Indenture Act as then in effect), without the
consent of the Securityholders, for one or more of the following purposes:

         (a)     to cure any ambiguity, defect, or inconsistency herein, in the
Securities;

         (b)     to comply with Article Ten;

         (c)     to provide for uncertificated Securities in addition to or in
place of certificated Securities;

         (d)     to add to the covenants of the Company for the benefit of the
holders of all of the Securities or to surrender any right or power herein
conferred upon the Company;

         (e)     to add to, delete from, or revise the conditions, limitations,
and restrictions on the authorized amount, terms, or purposes of issue,
authentication, and delivery of Securities, as herein set forth;

         (f)     to make any change that does not adversely affect the rights
of any Securityholder in any material respect;

         (g)     to provide for the issuance of and establish the form and
terms and conditions of the Securities, to establish the form of any
certifications required to be furnished pursuant to the terms of this Indenture
of Securities, or to add to the rights of the holders of Securities; or

         (h)     qualify or maintain the qualification of the Indenture under 
the Trust Indenture Act.

         The Trustee is hereby authorized to join with the Company in the
execution of any such supplemental indenture, and to make any further
appropriate agreements and stipulations that may be therein contained, but the
Trustee shall not be obligated to enter into any such supplemental indenture
that affects the Trustee's own rights, duties or immunities under this
Indenture or otherwise.


                                      42
<PAGE>   49


         Any supplemental indenture authorized by the provisions of this
Section may be executed by the Company and the Trustee without the consent of
the holders of any of the Securities at the time Outstanding, notwithstanding
any of the provisions of Section 11.2.

SECTION 11.2.    SUPPLEMENTAL INDENTURES WITH CONSENT OF SECURITYHOLDERS.

         With the consent (evidenced as provided in Section 10.1) of the
holders of not less than a majority in aggregate principal amount of the
Securities at the time Outstanding, the Company, when authorized by Board
Resolutions, and the Trustee may from time to time and at any time enter into
an indenture or indentures supplemental hereto (which shall conform to the
provisions of the Trust Indenture Act as then in effect) for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of this Indenture or of any supplemental indenture or of modifying
in any manner not covered by Section 11.1 the rights of the holders of the
Securities under this Indenture; provided, however, that no such supplemental
indenture shall without the consent of the holders of each Debenture then
Outstanding and affected thereby, (i) extend the fixed maturity of any
Securities, or reduce the principal amount thereof, or reduce the rate or
extend the time of payment of interest thereon, or reduce any premium payable
upon the redemption thereof, without the consent of the holder of each Security
so affected or (ii) reduce the aforesaid percentage of Securities, the holders
of which are required to consent to any such supplemental indenture provided,
further, that so long as any of the Securities issued by IBC Capital remain
outstanding, no such supplemental indenture shall adversely affect the Holders
of the Preferred Securities in any material respect without the consent of the
Holders of a majority of the aggregate liquidation preference of the Preferred
Securities, provided further, that if the Debentures are held by IBC Capital or
a trustee of such trust, such supplemental indenture shall not be effective
until the holders of a majority in liquidation preference of Trust Securities
of IBC Capital shall have consented to such supplemental indenture; provided
further, that if the consent of the Holder of each Outstanding Debt Security is
required, such supplemental indenture shall not be effective until each holder
of the Trust Securities of IBC Capital shall have consented to such
supplemental indenture.

         It shall not be necessary for the consent of the Securityholders
affected thereby under this Section to approve the particular form of any
proposed supplemental indenture, but it shall be sufficient if such consent
shall approve the substance thereof.

SECTION 11.3.    EFFECT OF SUPPLEMENTAL INDENTURES.

         Upon the execution of any supplemental indenture pursuant to the
provisions of this Article or of Section 10.1, this Indenture shall be and be
deemed to be modified and amended in accordance therewith and the respective
rights, limitations of rights, obligations, duties and immunities under this
Indenture of the Trustee, the Company and the holders of Securities shall
thereafter be determined, exercised and enforced hereunder subject in all
respects to such modifications and amendments, and all the terms and conditions
of any such supplemental indenture shall be and be deemed to be part of the
terms and conditions of this Indenture for any and all purposes.

SECTION 11.4.    SECURITIES AFFECTED BY SUPPLEMENTAL INDENTURES.


                                      43
<PAGE>   50


         Securities affected by a supplemental indenture, authenticated and
delivered after the execution of such supplemental indenture pursuant to the
provisions of this Article or of Section 11.1, may bear a notation in form
approved by the Company, provided such form meets the requirements of any
exchange upon which the Securities may be listed as to any matter provided for
in such supplemental indenture.  If the Company shall so determine, new
Securities of that series so modified as to conform, in the opinion of the
Board of Directors of the Company, to any modification of this Indenture
contained in any such supplemental indenture may be prepared by the Company,
authenticated by the Trustee and delivered in exchange for the Securities then
Outstanding.

SECTION 11.5.    EXECUTION OF SUPPLEMENTAL INDENTURES.

         Upon the request of the Company, accompanied by their Board
Resolutions authorizing the execution of any such supplemental indenture, and
upon the filing with the Trustee of evidence of the consent of Securityholders
required to consent thereto as aforesaid, the Trustee shall join with the
Company in the execution of such supplemental indenture unless such
supplemental indenture affects the Trustee's own rights, duties or immunities
under this Indenture or otherwise, in which case the Trustee may in its
discretion but shall not be obligated to enter into such supplemental
indenture.  The Trustee, subject to the provisions of Section 9.1, may receive
an Opinion of Counsel as conclusive evidence that any supplemental indenture
executed pursuant to this Article is authorized or permitted by, and conforms
to, the terms of this Article and that it is proper for the Trustee under the
provisions of this Article to join in the execution thereof.

         Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of this Section, the Trustee
shall transmit by mail, first class postage prepaid, a notice, setting forth in
general terms the substance of such supplemental indenture, to the
Securityholders as their names and addresses appear upon the Security Register.
Any failure of the Trustee to mail such notice, or any defect therein, shall
not, however, in any way impair or affect the validity of any such supplemental
indenture.

                                 ARTICLE XII
                            SUCCESSOR CORPORATION

SECTION 12.1.    COMPANY MAY CONSOLIDATE, ETC.

         Nothing contained in this Indenture or in any of the Securities shall
prevent any consolidation or merger of the Company with or into any other
corporation or corporations (whether or not affiliated with the Company, as the
case may be), or successive consolidations or mergers in which the Company, as
the case may be, or its successor or successors shall be a party or parties, or
shall prevent any sale, conveyance, transfer or other disposition of the
property of the Company, as the case may be, or its successor or successors as
an entirety, or substantially as an entirety, to any other corporation (whether
or not affiliated with the Company, as the case may be, or its successor or
successors) authorized to acquire and operate the same; provided, however, the
Company hereby covenants and agree that, (i) upon any such consolidation,
merger, sale,


                                      44
<PAGE>   51


conveyance, transfer or other disposition, the due and punctual payment, in
the case of the Company, of the principal of (premium, if any) and interest on
all of the Debentures, according to their terms and the due and punctual
performance and observance of all the covenants and conditions of this
Indenture to be kept or performed by the Company as the case may be, shall be
expressly assumed, by supplemental indenture (which shall conform to the
provisions of the Trust Indenture Act, as then in effect) satisfactory in form
to the Trustee executed and delivered to the Trustee by the entity formed by
such consolidation, or into which the Company, as the case may be, shall have
been merged, or by the entity which shall have acquired such property; (ii) in
case the Company consolidates with or merges into another Person or conveys or
transfers its properties and assets substantially then as an entirety to any
Person, the successor Person is organized under the laws of the United States
or any state or the District of Columbia, and (iii) immediately after giving
effect thereto, an Event of Default, and no event which, after notice or lapse
of time or both, would become an Event of Default, shall have occurred and be
continuing.

SECTION 12.2.    SUCCESSOR CORPORATION SUBSTITUTED.

         (a)     In case of any such consolidation, merger, sale, conveyance,
transfer or other disposition and upon the assumption by the successor
corporation, by supplemental indenture, executed and delivered to the Trustee
and satisfactory in form to the Trustee, of, in the case of the Company, the
due and punctual payment of the principal of, premium, if any, and interest on
all of the Debentures Outstanding and the due and punctual performance of all
of the covenants and conditions of this Indenture to be performed by the
Company, as the case may be such successor corporation shall succeed and be
substituted for the Company with the same effect as if it had been named as the
Company herein, and thereupon the predecessor corporation shall be relieved of
all obligations and covenants under this Indenture and the Securities.

         (b)     In case of any such consolidation, merger, sale, conveyance,
transfer or other disposition such changes in phraseology and form (but not in
substance) may be made in the Securities thereafter to be issued as may be
appropriate.

         (c)     Nothing contained in this Indenture or in any of the
Securities shall prevent the Company from merging into itself or acquiring by
purchase or otherwise all or any part of the property of any other Person
(whether or not affiliated with the Company).

SECTION 12.3.    EVIDENCE OF CONSOLIDATION, ETC. TO TRUSTEE.

         The Trustee, subject to the provisions of Section 9.1, may receive an
Opinion of Counsel as conclusive evidence that any such consolidation, merger,
sale, conveyance, transfer or other disposition, and any such assumption,
comply with the provisions of this Article.

                                  ARTICLE XIII
                           SATISFACTION AND DISCHARGE

SECTION 13.1.    SATISFACTION AND DISCHARGE OF INDENTURE.


                                      45
<PAGE>   52


         If at any time: (a) the Company shall have delivered to the Trustee
for cancellation all Securities theretofore authenticated (other than any
Securities that shall have been destroyed, lost or stolen and that shall have
been replaced or paid as provided in Section 2.9) and Securities for whose
payment money or Governmental Obligations have theretofore been deposited in
trust or segregated and held in trust by the Company (and thereupon repaid to
the Company or discharged from such trust, as provided in Section 13.5); or all
such Securities not theretofore delivered to the Trustee for cancellation shall
have become due and payable, or are by their terms to become due and payable
within one year or are to be called for redemption within one year under
arrangements satisfactory to the Trustee for the giving of notice of
redemption, and the Company shall deposit or cause to be deposited with the
Trustee as trust funds the entire amount in moneys or Governmental Obligations
sufficient or a combination thereof, sufficient in the opinion of a nationally
recognized firm of independent public accountants expressed in a written
certification thereof delivered to the Trustee, to pay at maturity or upon
redemption all Securities not theretofore delivered to the Trustee for
cancellation, including principal (and premium, if any) and interest due or to
become due to such date of maturity or date fixed for redemption, as the case
may be, and if the Company shall also pay or cause to be paid all other sums
payable hereunder with respect to the Company; then this Indenture shall
thereupon cease to be of further effect except for the provisions of Sections
2.3, 2.7, 2.9, 5.1, 5.2, 5.3 and 9.10, that shall survive until the date of
maturity or redemption date, as the case may be, and Sections 9.6 and 13.5,
that shall survive to such date and thereafter, and the Trustee, on demand of
the Company and at the cost and expense of the Company, shall execute proper
instruments acknowledging satisfaction of and discharging this Indenture.

SECTION 13.2.    DISCHARGE OF OBLIGATIONS.

         If at any time all such Securities not heretofore delivered to the
Trustee for cancellation or that have not become due and payable as described
in Section 13.1 shall have been paid by the Company by depositing irrevocably
with the Trustee as trust funds moneys or an amount of Governmental Obligations
sufficient to pay at maturity or upon redemption all such Securities not
theretofore delivered to the Trustee for cancellation, including principal (and
premium, if any) and interest due or to become due to such date of maturity or
date fixed for redemption, as the case may be, and if the Company shall also
pay or cause to be paid all other sums payable hereunder by the Company, then
after the date such moneys or Governmental Obligations, as the case may be, are
deposited with the Trustee the obligations of the Company under this Indenture
shall cease to be of further effect except for the provisions of Sections 2.3,
2.7, 2.9, 5.1, 5.2, 5.3, 9.6, 9.10 and 13.5 hereof that shall survive until
such Securities shall mature and be paid.  Thereafter, Sections 9.6 and 13.5
shall survive.

                                      46
<PAGE>   53

SECTION 13.3.    DEPOSITED MONEYS TO BE HELD IN TRUST.

         All monies or Governmental Obligations deposited with the Trustee
pursuant to Sections 13.1 or 13.2 shall be held in trust and shall be available
for payment as due, either directly or through any paying agent (including the
Company acting as its own paying agent), to the holders of the Securities for
the payment or redemption of which such moneys or Governmental Obligations have
been deposited with the Trustee.

SECTION 13.4.    PAYMENT OF MONIES HELD BY PAYING AGENTS.

         In connection with the satisfaction and discharge of this Indenture
all moneys or Governmental Obligations then held by any paying agent under the
provisions of this Indenture shall, upon demand of the Company, be paid to the
Trustee and thereupon such paying agent shall be released from all further
liability with respect to such moneys or Governmental Obligations.

SECTION 13.5.    REPAYMENT TO COMPANY.

         Any monies or Governmental Obligations deposited with any paying agent
or the Trustee, or then held by the Company in trust for payment of principal
of or premium or interest on the Securities that are not applied but remain
unclaimed by the holders of such Securities for at least two years after the
date upon which the principal of (and premium, if any) or interest on such
Securities shall have respectively become due and payable, shall be repaid to
the Company, upon written request by the Company, on May 31 of each year or (if
then held by the Company) shall be discharged from such trust; and thereupon
the paying agent and the Trustee shall be released from all further liability
with respect to such moneys or Governmental Obligations, and the holder of any
of the Securities entitled to receive such payment shall thereafter, as an
unsecured general creditor, look only to the Company or the Guarantor for the
payment thereof.

                                  ARTICLE XIV
               IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS
                                 AND DIRECTORS

SECTION 14.1.    NO RECOURSE.

         No recourse under or upon any obligation, covenant or agreement of
this Indenture, or of any Security, or for any claim based thereon or otherwise
in respect thereof, shall be had against any incorporator, stockholder, officer
or director, past, present or future as such, of the Company or of any
predecessor or successor corporation, either directly or through the Company or
the Guarantor or any such predecessor or successor corporation, whether by
virtue of any constitution, statute or rule of law, or by the enforcement of
any assessment or penalty or otherwise; it being expressly understood that this
Indenture and the obligations issued hereunder are solely corporate
obligations, and that no such personal liability whatever shall attach to, or
is or shall be incurred by, the incorporators, stockholders, officers or
directors as such, of the Company or of any predecessor or



                                      47
<PAGE>   54


successor corporation, or any of them, because of the creation of the
indebtedness hereby authorized, or under or by reason of the obligations,
covenants or agreements contained in this Indenture or in any of the Securities
or implied therefrom; and that any and all such personal liability of every
name and nature, either at common law or in equity or by constitution or
statute, of, and any and all such rights and claims against, every such
incorporator, stockholder, officer or director as such, because of the creation
of the indebtedness hereby authorized, or under or by reason of the
obligations, covenants or agreements contained in this Indenture or in any of
the Securities or implied therefrom, are hereby expressly waived and released
as a condition of, and as a consideration for, the execution of this Indenture
and the issuance of such Securities.

                                   ARTICLE XV
                            MISCELLANEOUS PROVISIONS

SECTION 15.1.    EFFECT ON SUCCESSORS AND ASSIGNS.

         All the covenants, stipulations, promises and agreements in this
Indenture contained by or on behalf of the Company shall bind their respective
successors and assigns, whether so expressed or not.

SECTION 15.2.    ACTIONS BY SUCCESSOR.

         Any act or proceeding by any provision of this Indenture authorized or
required to be done or performed by any board, committee or officer of the
Company shall and may be done and performed with like force and effect by the
corresponding board, committee or officer of any corporation that shall at the
time be the lawful sole successor of the Company.

SECTION 15.3.    SURRENDER OF COMPANY POWERS.

         The Company by instrument in writing executed by authority of 2/3
(two-thirds) of its Board of Directors and delivered to the Trustee may
surrender any of the powers reserved to the Company, and thereupon such power
so surrendered shall terminate both as to the Company, as the case may be, and
as to any successor corporation.

SECTION 15.4.    NOTICES.

         Except as otherwise expressly provided herein any notice or demand
that by any provision of this Indenture is required or permitted to be given or
served by the Trustee or by the holders of Securities to or on the Company may
be given or served by being deposited first class postage prepaid in a
post-office letterbox addressed (until another address is filed in writing by
the Company with the Trustee), as follows: c/o Independent Bank Corporation,
230 West Main Street, Ionia, Michigan 48846, Attention Chief Financial Officer.
Any notice, election, request or demand by the Company or any Securityholder to
or upon the Trustee shall be deemed to have been sufficiently given or made,
for all purposes, if received in writing at the Corporate Trust Office of the
Trustee.

                                      48
<PAGE>   55


SECTION 15.5.    GOVERNING LAW.

         This Indenture and each Security shall be deemed to be a contract made
under the internal laws of the State of Michigan and for all purposes shall be
construed in accordance with the laws of said State.

SECTION 15.6.    TREATMENT OF DEBENTURES AS DEBT.

         It is intended that the Debentures will be treated as indebtedness and
not as equity for federal income tax purposes.  The provisions of this
Indenture shall be interpreted to further this intention.

SECTION 15.7.    COMPLIANCE CERTIFICATES AND OPINIONS.

         (a)     Upon any application or demand by the Company to the Trustee
to take any action under any of the provisions of this Indenture, the Company
shall furnish to the Trustee an Officers' Certificate stating that all
conditions precedent provided for in this Indenture relating to the proposed
action have been complied with and an Opinion of Counsel stating that in the
opinion of such counsel all such conditions precedent have been complied with,
except that in the case of any such application or demand as to which the
furnishing of such documents is specifically required by any provision of this
Indenture relating to such particular application or demand, no additional
certificate or opinion need be furnished.

         (b)     Each certificate and opinion of the Company provided for in
this Indenture and delivered to the Trustee with respect to compliance with a
condition or covenant in this Indenture shall include (1) a statement that the
Person making such certificate or opinion has read such covenant or condition;
(2) a brief statement as to the nature and scope of the examination or
investigation upon which the statements or opinions contained in such
certificate or opinion are based; (3) a statement that, in the opinion of such
Person, he has made such examination or investigation as is necessary to enable
him to express an informed opinion as to whether or not such covenant or
condition has been complied with; and (4) a statement as to whether or not, in
the opinion of such Person, such condition or covenant has been complied with.

SECTION 15.8.    PAYMENTS ON BUSINESS DAYS.

         In any case where the date of maturity of interest or principal of any
Security or the date of redemption of any Security shall not be a Business Day,
then payment of interest or principal (and premium, if any) may be made on the
next succeeding Business Day with the same force and effect as if made on the
nominal date of maturity or redemption, and no interest shall accrue for the
period after such nominal date.



                                      49
<PAGE>   56

SECTION 15.9.    CONFLICT WITH TRUST INDENTURE ACT.

         If and to the extent that any provision of this Indenture limits,
qualifies or conflicts with the duties imposed by Sections 310 to 317,
inclusive, of the Trust Indenture Act, such imposed duties shall control.

SECTION 15.10.   COUNTERPARTS.

         This Indenture may be executed in any number of counterparts, each of
which shall be an original, but such counterparts shall together constitute but
one and the same instrument.

SECTION 15.11.   SEPARABILITY.

         In case any one or more of the provisions contained in this Indenture
or in the Securities of any series shall for any reason be held to be invalid,
illegal or unenforceable in any respect, such invalidity, illegality or
unenforceability shall not affect any other provisions of this Indenture or of
such Securities, but this Indenture and such Securities shall be construed as
if such invalid or illegal or unenforceable provision had never been contained
herein or therein.

SECTION 15.12.   ASSIGNMENT.

         The Company will have the right at all times to assign any of its
respective rights or obligations under this Indenture to a direct or indirect
wholly-owned Subsidiary of the Company, provided that, in the event of any such
assignment, the Company will remain liable for all such obligations.  Subject
to the foregoing, the Indenture is binding upon and inures to the benefit of
the parties thereto and their respective successors and assigns.  This
Indenture may not otherwise be assigned by the parties thereto.

SECTION 15.13.   ACKNOWLEDGMENT OF RIGHTS

         The Company acknowledges that, with respect to any Debentures held by
IBC Capital or a trustee of such trust, if the Property Trustee fails to
enforce its rights under this Indenture as the holder of the series of
Debentures held as the assets of IBC Capital any holder of Preferred Securities
may institute legal proceedings directly against the Company to enforce such
Property Trustee's rights under this Indenture without first instituting any
legal proceedings against such Property Trustee or any other person or entity.
Notwithstanding the foregoing, if an Event of Default has occurred and is
continuing and such event is attributable to the failure of the Company to pay
interest or principal on the Securities on the date such interest or principal
is otherwise payable (or in the case of redemption, on the redemption date),
the Company acknowledges that a holder of Preferred Securities may directly
institute a proceeding for enforcement of payment to such holder of the
principal of or interest on the Securities having a principal amount equal to
the aggregate liquidation amount of the Preferred Securities of such holder on
or after the respective due date specified in the Applicable Series of
Securities.

                                      50
<PAGE>   57


                                  ARTICLE XVI
                          SUBORDINATION OF SECURITIES

SECTION 16.1.    AGREEMENT TO SUBORDINATE.

         The Company covenants and agrees, and each Holder of Debentures issued
hereunder by such Holder's acceptance thereof likewise covenants and agrees,
that all Debentures shall be issued subject to the provisions of this Article
XVI; and each Holder of a Debt Security, whether upon original issue or upon
transfer or assignment thereof, accepts and agrees to be bound by such
provisions.

         The payment by the Company of the principal of, premium, if any, and
interest on all Debentures issued hereunder shall, to the extent and in the
manner hereinafter set forth, be subordinated and junior in right of payment to
the prior payment in full of all Senior Debt, Subordinated Debt and Additional
Senior Obligations, whether outstanding at the date of this Indenture or
thereafter incurred.

         No provision of this Article XVI shall prevent the occurrence of any
default or Event of Default hereunder.

SECTION 16.2.    DEFAULT ON SENIOR DEBT, SUBORDINATED DEBT OR ADDITIONAL SENIOR
OBLIGATIONS.

         In the event and during the continuation of any default by the Company
in the payment of principal, premium, interest or any other payment due on any
Senior Debt, Subordinated Debt or Additional Senior Obligations of the Company,
as the case may be, or in the event that the maturity of any Senior Debt,
Subordinated Debt or Additional Senior Obligations of the Company
(collectively, "Senior Indebtedness"), as the case may be, has been accelerated
because of a default, then, in either case, no payment shall be made by the
Company with respect to the principal (including redemption and sinking fund
payments) of, or premium, if any, or interest on the Debentures.

         In the event that, notwithstanding the foregoing, any payment shall be
received by the Trustee when such payment is prohibited by the preceding
paragraph of this Section 16.2, such payment shall be held in trust for the
benefit of, and shall be paid over or delivered to, the holders of Senior
Indebtedness or their respective representatives, or to the trustee or trustees
under any indenture pursuant to which any of such Senior Indebtedness may have
been issued, as their respective interests may appear, but only to the extent
that the holders of the Senior Indebtedness (or their representative or
representatives or a trustee) notify the Trustee in writing within 90 days of
such payment of the amounts then due and owing on the Senior Indebtedness and
only the amounts specified in such notice to the Trustee shall be paid to the
holders of Senior Indebtedness.


                                      51
<PAGE>   58

SECTION 16.3.    LIQUIDATION; DISSOLUTION; BANKRUPTCY.

         Upon any payment by the Company or distribution of assets of the
Company of any kind or character, whether in cash, property or securities, to
creditors upon any dissolution or winding-up or liquidation or reorganization
of the Company, whether voluntary or involuntary or in bankruptcy, insolvency,
receivership or other proceedings, all amounts due upon all Senior Indebtedness
of the Company shall first be paid in full, or payment thereof provided for in
money in accordance with its terms, before any payment is made by the Company
on account of the principal (and premium, if any) or interest on the
Debentures; and upon any such dissolution or winding-up or liquidation or
reorganization, any payment by the Company, or distribution of assets of the
Company of any kind or character, whether in cash, property or securities, to
which the Holders of the Debentures or the Trustee would be entitled to receive
from the Company, except for the provisions of this Article XVI, shall be paid
by the Company or by any receiver, trustee in bankruptcy, liquidating trustee,
agent or other Person making such payment or distribution, or by the Holders of
the Debentures or by the Trustee under the Indenture if received by them or it,
directly to the holders of Senior Indebtedness of the Company (pro rata to such
holders on the basis of the respective amounts of Senior Indebtedness held by
such holders, as calculated by the Company) or their representative or
representatives, or to the trustee or trustees under any indenture pursuant to
which any instruments evidencing such Senior Indebtedness may have been issued,
as their respective interests may appear, to the extent necessary to pay such
Senior Indebtedness in full, in money or money's worth, after giving effect to
any concurrent payment or distribution to or for the holders of such Senior
Indebtedness, before any payment or distribution is made to the Holders of
Debentures or to the Trustee.

         In the event that, notwithstanding the foregoing, any payment or
distribution of assets of the Company of any kind or character, whether in
cash, property or securities, prohibited by the foregoing, shall be received by
the Trustee before all Senior Indebtedness of the Company is paid in full, or
provision is made for such payment in money in accordance with its terms, such
payment or distribution shall be held in trust for the benefit of and shall be
paid over or delivered to the holders of such Senior Indebtedness or their
representative or representatives, or to the trustee or trustees under any
indenture pursuant to which any instruments evidencing such Senior Indebtedness
may have been issued, and their respective interests may appear, as calculated
by the Company, for application to the payment of all Senior Indebtedness of
the Company, as the case may be, remaining unpaid to the extent necessary to
pay such Senior Indebtedness in full in money in accordance with its terms,
after giving effect to any concurrent payment or distribution to or for the
benefit of the holders of such Senior Indebtedness.

         For purposes of this Article XVI, the words "cash, property or
securities" shall not be deemed to include shares of stock of the Company as
reorganized or readjusted, or securities of the Company or any other
corporation provided for by a plan of reorganization or readjustment, the
payment of which is subordinated at least to the extent provided in this
Article XVI with respect to the Debentures to the payment of all Senior
Indebtedness of the Company, as the case may be, that may at the time be
outstanding, provided that (i) such Senior Indebtedness is assumed by the new


                                      52
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corporation, if any, resulting from any such reorganization or readjustment,
and (ii) the rights of the holders of such Senior Indebtedness are not, without
the consent of such holders, altered by such reorganization or readjustment.
The consolidation of the Company with, or the merger of the Company into,
another corporation or the liquidation or dissolution of the Company following
the conveyance or transfer of its property as an entirety, or substantially as
an entirety, to another corporation upon the terms and conditions provided for
in Article X of the Indenture shall not be deemed a dissolution, winding-up,
liquidation or reorganization for the purposes of this Section 16.3 if such
other corporation shall, as a part of such consolidation, merger, conveyance or
transfer, comply with the conditions stated in Article X of the Indenture.
Nothing in Section 16.2 or in this Section 16.3 shall apply to claims of, or
payments to, the Trustee under or pursuant to Section 9.6 of the Indenture.

SECTION 16.4.    SUBROGATION.

         Subject to the payment in full of all Senior Indebtedness of the
Company, the rights of the Holders of the Debentures shall be subrogated to the
rights of the holders of such Senior Indebtedness to receive payments or
distributions of cash, property or securities of the Company, as the case may
be, applicable to such Senior Indebtedness until the principal of (and premium,
if any) and interest on the Debentures shall be paid in full; and, for the
purposes of such subrogation, no payments or distributions to the holders of
such Senior Indebtedness of any cash, property or securities to which the
Holders of the Debentures or the Trustee would be entitled except for the
provisions of this Article XVI, and no payment over pursuant to the provisions
of this Article XVI to or for the benefit of the holders of such Senior
Indebtedness by Holders of the Debentures or the Trustee, shall, as between the
Company, its creditors other than Holders of Senior Indebtedness of the
Company, and the holders of the Debentures, be deemed to be a payment by the
Company to or on account of such Senior Indebtedness.  It is understood that
the provisions of this Article XVI are and are intended solely for the purposes
of defining the relative rights of the Holders of the Debentures, on the one
hand, and the holders of such Senior Indebtedness on the other hand.

         Nothing contained in this Article XIV or elsewhere in this Indenture
or in the Debentures is intended to or shall impair, as between the Company,
its creditors other than the holders of Senior Indebtedness of the Company, and
the Holders of the Debentures, the obligation of the Company, which is absolute
and unconditional, to pay to the Holders of the Debentures the principal of
(and premium, if any) and interest on the Debentures as and when the same shall
become due and payable in accordance with their terms, or is intended to or
shall affect the relative rights of the Holders of the Debentures and creditors
of the Company, as the case may be, other than the holders of Senior
Indebtedness of the Company, as the case may be, nor shall anything herein or
therein prevent the Trustee or the Holder of any Debt Security from exercising
all remedies otherwise permitted by applicable law upon default under the
Indenture, subject to the rights, if any, under this Article XVI of the holders
of such Senior Indebtedness in respect of cash, property or securities of the
Company, as the case may be, received upon the exercise of any such remedy.

         Upon any payment or distribution of assets of the Company referred to
in this Article XVI, the Trustee, subject to the provisions of Section 9.1 of
the Indenture, and the Holders of the

                                      53
<PAGE>   60


Debentures shall be entitled to conclusively rely upon any order or decree made
by any court of competent jurisdiction in which such dissolution, winding-up,
liquidation or reorganization proceedings are pending, or a certificate of the
receiver, trustee in bankruptcy, liquidation trustee, agent or other Person
making such payment or distribution, delivered to the Trustee or to the Holders
of the Debentures, for the purposes of ascertaining the Persons entitled to
participate in such distribution, the holders of Senior Indebtedness and other
indebtedness of the Company, as the case may be, the amount thereof or payable
thereon, the amount or amounts paid or distributed thereon and all other facts
pertinent thereto or to this Article XVI.

SECTION 16.5.    TRUSTEE TO EFFECTUATE SUBORDINATION.

         Each Holder of Debentures by such Holder's acceptance thereof
authorizes and directs the Trustee on such Holder's behalf to take such action
as may be necessary or appropriate to effectuate the subordination provided in
this Article XVI and appoints the Trustee such Holder's attorney-in-fact for
any and all such purposes.

SECTION 16.6.    NOTICE BY THE COMPANY.

         The Company shall give prompt written notice to a Responsible Officer
of the Trustee of any fact known to the Company that would prohibit the making
of any payment of monies to or by the Trustee in respect of the Debentures
pursuant to the provisions of this Article XVI.  Notwithstanding the provisions
of this Article XVI or any other provision of this Indenture, the Trustee shall
not be charged with knowledge of the existence of any facts that would prohibit
the making of any payment of monies to or by the Trustee in respect of the
Debentures pursuant to the provisions of this Article XVI, unless and until a
Responsible Officer of the Trustee shall have received written notice thereof
from the Company or a holder or holders of Senior Indebtedness or from any
trustee therefor; and before the receipt of any such written notice, the
Trustee, subject to the provisions of Section 9.1 of the Indenture, shall be
entitled in all respects to assume that no such facts exist; provided, however,
that if the Trustee shall not have received the notice provided for in this
Section 16.6 at least two Business Days prior to the date upon which by the
terms hereof any money may become payable for any purpose (including, without
limitation, the payment of the principal of (or premium, if any) or interest on
any Debenture), then, anything herein contained to the contrary
notwithstanding, the Trustee shall have full power and authority to receive
such money and to apply the same to the purposes for which they were received,
and shall not be affected by any notice to the contrary that may be received by
it within two Business Days prior to such date.

         The Trustee, subject to the provisions of Section 9.1 of the
Indenture, shall be entitled to conclusively rely on the delivery to it of a
written notice by a Person representing himself to be a holder of Senior
Indebtedness of the Company, as the case may be (or a trustee on behalf of such
holder), to establish that such notice has been given by a holder of such
Senior Indebtedness or a trustee on behalf of any such holder or holders.  In
the event that the Trustee determines in good faith that further evidence is
required with respect to the right of any Person as a holder of such Senior
Indebtedness to participate in any payment or distribution pursuant to this
Article XVI, the Trustee may request such Person to furnish evidence to the
reasonable satisfaction of the Trustee

                                      54
<PAGE>   61


as to the amount of such Senior Indebtedness held by such Person, the extent
to which such Person is entitled to participate in such payment or distribution
and any other facts pertinent to the rights of such Person under this Article
XVI, and, if such evidence is not furnished, the Trustee may defer any payment
to such Person pending judicial determination as to the right of such Person to
receive such payment.

SECTION 16.7.    RIGHTS OF THE TRUSTEE; HOLDERS OF SENIOR INDEBTEDNESS.

         The Trustee in its individual capacity shall be entitled to all the
rights set forth in this Article XVI in respect of any Senior Indebtedness at
any time held by it, to the same extent as any other holder of Senior
Indebtedness, and nothing in this Indenture shall deprive the Trustee of any of
its rights as such holder. The Trustee's right to compensation and
reimbursement of expenses as set forth in Section 9.6 shall not be subject to
the subordination provisions of this Article XVI.

         With respect to the holders of Senior Indebtedness of the Company, the
Trustee undertakes to perform or to observe only such of its covenants and
obligations as are specifically set forth in this Article XVI, and no implied
covenants or obligations with respect to the holders of such Senior
Indebtedness shall be read into this Indenture against the Trustee. The Trustee
shall not be deemed to owe any fiduciary duty to the holders of such Senior
Indebtedness and, subject to the provisions of Section 9.1 of the Indenture,
the Trustee shall not be liable to any holder of such Senior Indebtedness if it
shall pay over or deliver to Holders of Debentures, the Company or any other
Person money or assets to which any holder of such Senior Indebtedness shall be
entitled by virtue of this Article XVI or otherwise.

SECTION 16.8.    SUBORDINATION MAY NOT BE IMPAIRED.

         No right of any present or future holder of any Senior Indebtedness of
the Company to enforce subordination as herein provided shall at any time in
any way be prejudiced or impaired by any act or failure to act on the part of
the Company, as the case may be, or by any act or failure to act, in good
faith, by any such holder, or by any noncompliance by the Company, as the case
may be, with the terms, provisions and covenants of this Indenture, regardless
of any knowledge thereof that any such holder may have or otherwise be charged
with.

         Without in any way limiting the generality of the foregoing paragraph,
the holders of Senior Indebtedness of the Company may, at any time and from
time to time, without the consent of or notice to the Trustee or the Holders of
the Debentures, without incurring responsibility to the Holders of the
Debentures and without impairing or releasing the subordination provided in
this Article XVI or the obligations hereunder of the Holders of the Debentures
to the holders of such Senior Indebtedness, do any one or more of the
following:  (i) change the manner, place or terms of payment or extend the time
of payment of, or renew or alter, such Senior Indebtedness, or otherwise amend
or supplement in any manner such Senior Indebtedness or any instrument
evidencing the same or any agreement under which such Senior Indebtedness is
outstanding; (ii) sell, exchange, release or otherwise deal with any property
pledged, mortgaged or otherwise securing such Senior Indebtedness; (iii)
release any Person liable in any manner for the collection of such

                                      55
<PAGE>   62


 Senior Indebtedness; and (iv) exercise or refrain from exercising any rights
against the Company, as the case may be, and any other Person.




















                                      56
<PAGE>   63

         IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.


                                     INDEPENDENT BANK CORPORATION


                                     By: /s/ William R. Kohls    
                                         --------------------------------------
                                             Name:   William R. Kohls
                                             Title:  Executive Vice President 
                                             and Chief Financial Officer

Attest:

/s/ William R. Kohls                         
- -------------------------
Name:    William R. Kohls
Title:   Secretary


                                     STATE STREET BANK AND TRUST COMPANY,
                                     as Trustee


                                     By:/s/ Paul D. Allen     
                                        ---------------------------------------
                                            Name:   Paul D. Allen
                                            Title:  Vice President

STATE OF MICHIGAN         )
                          ) ss:
COUNTY OF KENT            )

         On the 17th day of December, 1996, before me personally came William
R. Kohls, to me known, who, being by me duly sworn, did depose and say that he
is the Executive Vice President and Chief Financial Officer of INDEPENDENT BANK
CORPORATION, one of the corporations described in and which executed the above
instrument; that he knows the corporate seal of said corporation; that the seal
affixed to the said instrument is such corporation seal; that it was so affixed
by authority of the Board of Directors of said corporation, and that he signed
his name thereto by like authority.

                                     /s/ Polly L. Larsen 
                                     ------------------------------------------
                                     Notary Public, Ottawa County, MI, acting 
                                     in Kent Co.  
                                     My Commission expires: 9/25/2000

[seal]                                             

                                      57
<PAGE>   64

                                   EXHIBIT A


                          (FORM OF FACE OF DEBENTURE)

         This Debenture is a Global Debenture within the meaning of the
Indenture hereinafter referred to and is registered in the name of The
Depository Trust Company, a New York corporation ("DEPOSITORY TRUST COMPANY")
or a nominee of DEPOSITORY TRUST COMPANY.  This Debenture is exchangeable for
Debentures registered in the name of a person other than DEPOSITORY TRUST
COMPANY or its nominee only in the limited circumstances described in the
Indenture, and no transfer of this Debenture (other than a transfer of this
Debenture as a whole by DEPOSITORY TRUST COMPANY to a nominee of DEPOSITORY
TRUST COMPANY or by a nominee of DEPOSITORY TRUST COMPANY to DEPOSITORY TRUST
COMPANY or another nominee of DEPOSITORY TRUST COMPANY) may be registered
except in such limited circumstances.

         Unless this Debenture is presented by an authorized representative of
DEPOSITORY TRUST COMPANY to the issuer or its agent for registration of
transfer, exchange or payment, and any Debenture Certificate issued is
registered in the name of Cede & Co. or such other name as requested by an
authorized representative of DEPOSITORY TRUST COMPANY (and any payment hereon
is made to Cede & Co. or such other entity as is requested by an authorized
representative of DEPOSITORY TRUST COMPANY), ANY TRANSFER, PLEDGE OR OTHER USE
HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL since  the registered
owner hereof, Cede & Co., has an interest herein.

No.  _____________________________                               $17,783,500

CUSIP No. 453-838-AC8


                          INDEPENDENT BANK CORPORATION

                          9.25% SUBORDINATED DEBENTURE
                             DUE DECEMBER 31, 2026

         Independent Bank Corporation, a Michigan corporation (the "Company",
which term includes any successor corporation under the Indenture hereinafter
referred to), for value received, hereby promises to pay to, CEDE & CO. or
registered assigns, the principal sum of Seventeen Million Seven Hundred
Eighty-three Thousand Five Hundred Dollars ($17,783,500) on December 31, 2026
(the "Stated Maturity"), and to pay interest on said principal sum from
December 18, 1996, or from the most recent interest payment date (each such
date, an "Interest Payment Date") to which interest has been paid or duly
provided for, quarterly (subject to deferral as set forth herein) in arrears on
March 31, June 30, September 30 and December 31 of each year commencing March
31, 1997, at the rate of 9.25% per annum until the principal hereof shall have
become due and payable,



                                      58
<PAGE>   65


and on any overdue principal and premium, if any, and (without duplication and
to the extent that payment of such interest is enforceable under applicable
law) on any overdue installment of interest at the same rate per annum
compounded quarterly.  The amount of interest payable on any Interest Payment
Date shall be computed on the basis of a 360-day year of twelve 30-day months.
Except as provided in the following sentence, the amount of interest payable
for any period shorter than a full quarterly period for which interest is
computed, will be computed on the basis of the actual number of days elapsed in
such 30-day period.  In the event that any date on which interest is payable on
this Debenture is not a business day, then payment of interest payable on such
date will be made on the next succeeding day that is a business day (and
without any interest or other payment in respect of any such delay) in each
case with the same force and effect as if made on the date such payment was
originally payable.  The interest installment so payable, and punctually paid
or duly provided for, on any Interest Payment Date will, as provided in the
Indenture, be paid to the person in whose name this Debenture (or one or more
Predecessor Securities, as defined in said Indenture) is registered at the
close of business on the regular record date for such interest installment,
which shall be the close of business on the business day next preceding such
Interest Payment Date unless otherwise provided in the Indenture.  Any such
interest installment not punctually paid or duly provided for shall forthwith
cease to be payable to the registered Holders on such regular record date and
may be paid to the Person in whose name this Debenture (or one or more
Predecessor Securities) is registered at the close of business on a special
record date to be fixed by the Trustee for the payment of such defaulted
interest, notice whereof shall be given to the registered Holders of this
series of Debentures not less than 10 days prior to such special record date,
or may be paid at any time in any other lawful manner not inconsistent with the
requirements of any securities exchange on which the Debentures may be listed,
and upon such notice as may be required by such exchange, all as more fully
provided in the Indenture.  The principal of (and premium, if any) and the
interest on this Debenture shall be payable at the office or agency of the
Trustee maintained for that purpose in any coin or currency of the United
States of America that at the time of payment is legal tender for payment of
public and private debts; provided, however, that payment of interest may be
made at the option of the Company by check mailed to the registered Holder at
such address as shall appear in the Security Register.  Notwithstanding the
foregoing, so long as the Holder of this Debenture is the Property Trustee, the
payment of the principal of (and premium, if any) and interest on this
Debenture will be made at such place and to such account as may be designated
by the Property Trustee.

         The Stated Maturity may be shortened at any time by the Company to any
date not earlier than December 31, 2001, subject to the Company having received
prior approval of the Federal Reserve if then required under applicable capital
guidelines or policies of the Federal Reserve.  Such date may also be extended
at any time at the election of the Company for one or more periods, but in no
event to a date later than December 31, 2045, subject to certain limitations
described in the Indenture.
  
         The indebtedness evidenced by this Debenture is, to the extent
provided in the Indenture, subordinate and junior in right of payment to the
prior payment in full of all Senior Indebtedness, and this Debenture is issued
subject to the provisions of the Indenture with respect thereto.  Each Holder
of this Debenture, by accepting the same, (a) agrees to and shall be bound by
such

                                      59
<PAGE>   66


provisions, (b) authorizes and directs the Trustee on his or her behalf to
take such action as may be necessary or appropriate to acknowledge or
effectuate the subordination so provided and (c) appoints the Trustee his or
her attorney-in-fact for any and all such purposes.  Each Holder hereof, by his
or her acceptance hereof, hereby waives all notice of the acceptance of the
subordination provisions contained herein and in the Indenture by each holder
of Senior Indebtedness, whether now outstanding or hereafter incurred, and
waives reliance by each such holder upon said provisions.

         This Debenture shall not be entitled to any benefit under the
Indenture hereinafter referred to, be valid or become obligatory for any
purpose until the Certificate of Authentication hereon shall have been signed
by or on behalf of the Trustee.

         The provisions of this Debenture are continued on the reverse side
hereof and such continued provisions shall for all purposes have the same
effect as though fully set forth at this place.

         IN WITNESS WHEREOF, the Company has caused this instrument to be
executed.

Dated December 18, 1996

                                     INDEPENDENT BANK CORPORATION


                                     By:_______________________________________
                                     Name:    William R. Kohls
                                     Title:   Executive Vice President and
                                              Chief Financial Officer


Attest:

By: ______________________________
Name:
Title:



                                      60
<PAGE>   67


                    [FORM OF CERTIFICATE OF AUTHENTICATION]

                         CERTIFICATE OF AUTHENTICATION

         This is one of the Debentures described in the within-mentioned
Indenture.

Dated:

STATE STREET BANK AND TRUST COMPANY        
as Trustee                                 _______________________________ 
                                       or     Authentication Agent



By________________________________         By_____________________________
         Authorized Signatory



                                      61
<PAGE>   68


                         [FORM OF REVERSE OF DEBENTURE]

                          9.25% SUBORDINATED DEBENTURE
                                  (CONTINUED)

         This Debenture is one of the subordinated debentures of the Company
(herein sometimes referred to as the "Debentures"), specified in the Indenture,
all issued or to be issued under and pursuant to an Indenture dated as of
December 17, 1996 (the "Indenture") duly executed and delivered between the
Company and State Street Bank and Trust Company, as Trustee (the "Trustee"), to
which Indenture reference is hereby made for a description of the rights,
limitations of rights, obligations, duties and immunities thereunder of the
Trustee, the Company and the Holders of the Debentures.  The Debentures are
limited in aggregate principal amount as specified in the Indenture.

         Because of the occurrence and continuation of a Tax Event or
Investment Company Event, in certain circumstances, this Debenture may become
due and payable at the principal amount together with any interest accrued
thereon, to the date of such redemption (the "Redemption Price"). The
Redemption Price shall be paid prior to 12:00 noon, Eastern Standard Time,
time, on the date of such redemption or at such earlier time as the Company
determines.  The Company shall have the right to redeem this Debenture at the
option of the Company, without premium or penalty, in whole or in part at any
time on or after December 31, 2001 (an "Optional Redemption"), or at any time
in certain circumstances upon the occurrence of a Tax Event or Investment
Company Event, at the Redemption Price.  Any redemption pursuant to this
paragraph will be made upon not less than 30 days nor more than 60 days notice,
at the Redemption Price.  If the Debentures are only partially redeemed by the
Company pursuant to an Optional Redemption, the Debentures will be redeemed pro
rata or by lot or by any other method utilized by the Trustee; provided that
if, at the time of redemption, the Debentures are registered as a Global
Debenture, the Depositary shall determine the principal amount of such
Debentures held by each Debenture holder to be redeemed in accordance with its
procedures.

         In the event of redemption of this Debenture in part only, a new
Debenture or Debentures for the unredeemed portion hereof will be issued in the
name of the Holder hereof upon the cancellation hereof.

         In case an Event of Default, as defined in the Indenture, shall have
occurred and be continuing, the principal of all of the Debentures may be
declared, and upon such declaration shall become, due and payable, in the
manner, with the effect and subject to the conditions provided in the
Indenture.

         The Indenture contains provisions permitting the Company and the
Trustee, with the consent of the Holders of not less than a majority in
aggregate principal amount of the Debentures at the time Outstanding, as
defined in the Indenture, to execute supplemental indentures for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of the




                                      62
<PAGE>   69


Indenture or of any supplemental indenture or of modifying in any manner the
rights of the Holders of the Debentures; provided, however, that no such
supplemental indenture shall (i) extend the fixed maturity of the Debentures
except as provided in the Indenture, or reduce the principal amount thereof, or
reduce the rate or extend the time of payment of interest thereon, or reduce
any premium payable upon the redemption thereof, without the consent of the
Holder of each Debenture so affected, or (ii) reduce the aforesaid percentage
of Debentures, the Holders of which are required to consent to any such
supplemental indenture, without the consent of the Holders of each Debenture
then outstanding and affected thereby.  The Indenture also contains provisions
permitting the Holders of a majority in aggregate principal amount of the
Debentures at the time outstanding affected thereby, on behalf of all of the
Holders of the Debentures, to waive any past default in the performance of any
of the covenants contained in the Indenture, or established pursuant to the
Indenture, and its consequences, except a default in the payment of the
principal of or premium, if any, or interest on any of the Debentures of such
series.  Any such consent or waiver by the registered Holder of this Debenture
(unless revoked as provided in the Indenture) shall be conclusive and binding
upon such Holder and upon all future Holders and owners of this Debenture and
of any Debenture issued in exchange herefor or in place hereof (whether by
registration of transfer or otherwise), irrespective of whether or not any
notation of such consent or waiver is made upon this Debenture.

         No reference herein to the Indenture and no provision of this
Debenture or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay the principal of and
premium, if any, and interest on this Debenture at the time and place and at
the rate and in the money herein prescribed.

         The Company shall have the right at any time during the term of the
Debentures and from time to time to extend the interest payment period of such
Debentures for up to 20 consecutive quarters (an "Extended Interest Payment
Period"), at the end of which period the Company shall pay all interest then
accrued and unpaid (together with interest thereon at the rate specified for
the Debentures to the extent that payment of such interest is enforceable under
applicable law).  Before the termination of any such Extended Interest Payment
Period, the Company may further extend such Extended Interest Payment Period,
provided that such Extended Interest Payment Period together with all such
further extensions thereof shall not exceed 20 consecutive quarters.  At the
termination of any such Extended Interest Payment Period and upon the payment
of all accrued and unpaid interest and any additional amounts then due, the
Company may commence a new Extended Interest Payment Period.

         As provided in the Indenture and subject to certain limitations
therein set forth, this Debenture is transferable by the registered Holder
hereof on the Security Register of the Company, upon surrender of this
Debenture for registration of transfer at the office or agency of the Trustee
in Boston, Massachusetts accompanied by a written instrument or instruments of
transfer in form satisfactory to the Company or the Trustee duly executed by
the registered Holder hereof or his attorney duly authorized in writing, and
thereupon one or more new Debentures of authorized denominations and for the
same aggregate principal amount and series will be issued to the designated
transferee or transferees.  No service charge will be made for any such
transfer, but the


                                      63
<PAGE>   70


Company may require payment of a sum sufficient to cover any tax or other
governmental charge payable in relation thereto.

         Prior to due presentment for registration of transfer of this
Debenture, the Company, the Trustee, any paying agent and the Security
Registrar may deem and treat the registered holder hereof as the absolute owner
hereof (whether or not this Debenture shall be overdue and notwithstanding any
notice of ownership or writing hereon made by anyone other than the Security
Registrar) for the purpose of receiving payment of or on account of the
principal hereof and premium, if any, and interest due hereon and for all other
purposes, and neither the Company nor the Trustee nor any paying agent nor any
Security Registrar shall be affected by any notice to the contrary.

         No recourse shall be had for the payment of the principal of or the
interest on this Debenture, or for any claim based hereon, or otherwise in
respect hereof, or based on or in respect of the Indenture, against any
incorporator, stockholder, officer or director, past, present or future, as
such, of the Company or of any predecessor or successor corporation, whether by
virtue of any constitution, statute or rule of law, or by the enforcement of
any assessment or penalty or otherwise, all such liability being, by the
acceptance hereof and as part of the consideration for the issuance hereof,
expressly waived and released.

         All terms used in this Debenture that are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

         The Debentures are issuable only in registered form without coupons in
denominations of $25 and any integral multiple thereof.  This Global Debenture
is exchangeable for Debentures in definitive form only under certain limited
circumstances set forth in the Indenture.  Debentures of this series so issued
are issuable only in registered form without coupons in denominations of $25
and any integral multiple thereof.




                                      64

<PAGE>   1
                                                                     EXHIBIT 4.2


     This Debenture is a Global Debenture within the meaning of the Indenture
hereinafter referred to and is registered in the name of The Depository Trust
Company, a New York corporation ("DEPOSITORY TRUST COMPANY") or a nominee of
DEPOSITORY TRUST COMPANY.  This Debenture is exchangeable for Debentures
registered in the name of a person other than DEPOSITORY TRUST COMPANY or its
nominee only in the limited circumstances described in the Indenture, and no
transfer of this Debenture (other than a transfer of this Debenture as a whole
by DEPOSITORY TRUST COMPANY to a nominee of DEPOSITORY TRUST COMPANY or by a
nominee of DEPOSITORY TRUST COMPANY to DEPOSITORY TRUST COMPANY or another
nominee of DEPOSITORY TRUST COMPANY) may be registered except in such limited
circumstances.

     Unless this Debenture is presented by an authorized representative of
DEPOSITORY TRUST COMPANY to the issuer or its agent for registration of
transfer, exchange or payment, and any Debenture Certificate issued is
registered in the name of Cede & Co. or such other name as requested by an
authorized representative of DEPOSITORY TRUST COMPANY (and any payment hereon
is made to Cede & Co. or such other entity as is requested by an authorized
representative of DEPOSITORY TRUST COMPANY), ANY TRANSFER, PLEDGE OR OTHER USE
HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL since  the registered
owner hereof, Cede & Co., has an interest herein.

No. R-1                                                         $17,783,500.00

CUSIP No. 453-838-AC8


                          INDEPENDENT BANK CORPORATION

                          9.25% SUBORDINATED DEBENTURE
                             DUE DECEMBER 31, 2026

     Independent Bank Corporation, a Michigan corporation (the "Company", which
term includes any successor corporation under the Indenture hereinafter
referred to), for value received, hereby promises to pay to, CEDE & CO. or
registered assigns, the principal sum of Seventeen Million Seven Hundred Eighty
Three Thousand Five Hundred Dollars and No Cents ($17,783,500.00) on December
31, 2026 (the "Stated Maturity"), and to pay interest on said principal sum
from December 18, 1996, or from the most recent interest payment date (each
such date, an "Interest Payment Date") to which interest has been paid or duly
provided for, quarterly (subject to deferral as set forth herein) in arrears on
March 31, June 30, September 30 and December 31 of each year commencing March
31, 1997, at the rate of 9.25% per annum until the principal hereof shall have
become due and payable, and on any overdue principal and premium, if any, and
(without duplication and to the extent that payment of such interest is
enforceable under applicable law) on any overdue installment of interest at the
same rate per annum compounded quarterly.  The amount of interest payable on
any Interest Payment Date shall be computed on the basis of a 360-day year of
twelve 30-day months. Except as provided in the following sentence, the amount
of interest payable for any period shorter than a full quarterly period for
which interest is computed, will be



<PAGE>   2


computed on the basis of the actual number of days elapsed in such a 30-day
period.  In the event that any date on which interest is payable on this
Debenture is not a business day, then payment of interest payable on such date
will be made on the next succeeding day that is a business day (and without any
interest or other payment in respect of any such delay) in each case with the
same force and effect as if made on the date such payment was originally
payable.  The interest installment so payable, and punctually paid or duly
provided for, on any Interest Payment Date will, as provided in the Indenture,
be paid to the person in whose name this Debenture (or one or more Predecessor
Securities, as defined in said Indenture) is registered at the close of
business on the regular record date for such interest installment, which shall
be the close of business on the business day next preceding such Interest
Payment Date unless otherwise provided in the Indenture. Any such interest
installment not punctually paid or duly provided for shall forthwith cease to
be payable to the registered Holders on such regular record date and may be
paid to the Person in whose name this Debenture (or one or more Predecessor
Securities) is registered at the close of business on a special record date to
be fixed by the Trustee for the payment of such defaulted interest, notice
whereof shall be given to the registered Holders of this series of Debentures
not less than 10 days prior to such special record date, or may be paid at any
time in any other lawful manner not inconsistent with the requirements of any
securities exchange on which the Debentures may be listed, and upon such notice
as may be required by such exchange, all as more fully provided in the
Indenture.  The principal of (and premium, if any) and the interest on this
Debenture shall be payable at the office or agency of the Trustee maintained
for that purpose in any coin or currency of the United States of America that
at the time of payment is legal tender for payment of public and private debts;
provided, however, that payment of interest may be made at the option of the
Company by check mailed to the registered Holder at such address as shall
appear in the Security Register. Notwithstanding the foregoing, so long as the
Holder of this Debenture is the Property Trustee, the payment of the principal
of (and premium, if any) and interest on this Debenture will be made at such
place and to such account as may be designated by the Property Trustee.

     The Stated Maturity may be shortened at any time by the Company to any
date not earlier than December 31, 2001, subject to the Company having received
prior approval of the Federal Reserve if then required under applicable capital
guidelines or policies of the Federal Reserve.  Such date may also be extended
at any time at the election of the Company for one or more periods, but in no
event to a date later than December 31, 2045, subject to certain limitations
described in the Indenture.

     The indebtedness evidenced by this Debenture is, to the extent provided in
the Indenture, subordinate and junior in right of payment to the prior payment
in full of all Senior Indebtedness, and this Debenture is issued subject to the
provisions of the Indenture with respect thereto.  Each Holder of this
Debenture, by accepting the same, (a) agrees to and shall be bound by such
provisions, (b) authorizes and directs the Trustee on his or her behalf to take
such action as may be necessary or appropriate to acknowledge or effectuate the
subordination so provided and (c) appoints the Trustee his or her
attorney-in-fact for any and all such purposes.  Each Holder hereof, by his or
her acceptance hereof, hereby waives all notice of the acceptance of the
subordination provisions contained herein and in the Indenture by each holder
of Senior Indebtedness, whether now outstanding or hereafter incurred, and
waives reliance by each such holder upon said provisions.


<PAGE>   3


     This Debenture shall not be entitled to any benefit under the Indenture
hereinafter referred to, be valid or become obligatory for any purpose until
the Certificate of Authentication hereon shall have been signed by or on behalf
of the Trustee.

     The provisions of this Debenture are continued on the reverse side hereof
and such continued provisions shall for all purposes have the same effect as
though fully set forth at this place.

     IN WITNESS WHEREOF, the Company has caused this instrument to be executed.

Dated December 18, 1996

                                     INDEPENDENT BANK CORPORATION




                                     By:  /s/ William R. Kohls
                                          ------------------------------------
                                          Name:  William R. Kohls
                                          Title: Executive Vice President and
                                                 Chief Financial Officer


Attest:


By:    /s/ William R. Kohls
    -----------------------------
    Name:   William R. Kohls
    Title:  Secretary





<PAGE>   4
                         CERTIFICATE OF AUTHENTICATION

     This is one of the Debentures described in the within-mentioned Indenture.

Dated:

STATE STREET BANK AND TRUST COMPANY         -------------------------------
as Trustee                          or      Authentication Agent



By  /s/ Paul D. Allen                      By 
   -----------------------------              -----------------------------
     Authorized Signatory




<PAGE>   5



                          9.25% SUBORDINATED DEBENTURE
                                  (CONTINUED)

     This Debenture is one of the subordinated debentures of the Company
(herein sometimes referred to as the "Debentures"), specified in the Indenture,
all issued or to be issued under and pursuant to an Indenture dated as of
December 17, 1996 (the "Indenture") duly executed and delivered between the
Company and State Street Bank and Trust Company, as Trustee (the "Trustee"), to
which Indenture reference is hereby made for a description of the rights,
limitations of rights, obligations, duties and immunities thereunder of the
Trustee, the Company and the Holders of the Debentures.  The Debentures are
limited in aggregate principal amount as specified in the Indenture.

     Because of the occurrence and continuation of a Tax Event or Investment
Company Event, in certain circumstances, this Debenture may become due and
payable at the principal amount together with any interest accrued thereon, to
the date of such redemption (the "Redemption Price"). The Redemption Price
shall be paid prior to 12:00 noon, Eastern Standard Time, time, on the date of
such redemption or at such earlier time as the Company determines.  The Company
shall have the right to redeem this Debenture at the option of the Company,
without premium or penalty, in whole or in part at any time on or after
December 31, 2001 (an "Optional Redemption"), or at any time in certain
circumstances upon the occurrence of a Tax Event or Investment Company Event,
at the Redemption Price.  Any redemption pursuant to this paragraph will be
made upon not less than 30 days nor more than 60 days notice, at the Redemption
Price.  If the Debentures are only partially redeemed by the Company pursuant
to an Optional Redemption, the Debentures will be redeemed pro rata or by lot
or by any other method utilized by the Trustee; provided that if, at the time
of redemption, the Debentures are registered as a Global Debenture, the
Depositary shall determine the principal amount of such Debentures held by each
Debenture holder to be redeemed in accordance with its procedures.

     In the event of redemption of this Debenture in part only, a new Debenture
or Debentures for the unredeemed portion hereof will be issued in the name of
the Holder hereof upon the cancellation hereof.

     In case an Event of Default, as defined in the Indenture, shall have
occurred and be continuing, the principal of all of the Debentures may be
declared, and upon such declaration shall become, due and payable, in the
manner, with the effect and subject to the conditions provided in the
Indenture.

     The Indenture contains provisions permitting the Company and the Trustee,
with the consent of the Holders of not less than a majority in aggregate
principal amount of the Debentures at the time Outstanding, as defined in the
Indenture, to execute supplemental indentures for the purpose of adding any
provisions to or changing in any manner or eliminating any of the provisions of
the Indenture or of any supplemental indenture or of modifying in any manner
the rights of the Holders of the Debentures; provided, however, that no such
supplemental indenture shall (i) extend the fixed maturity of the Debentures
except as provided in the Indenture, or reduce the principal amount






<PAGE>   6
thereof, or reduce the rate or extend the time of payment of interest thereon,
or reduce any premium payable upon the redemption thereof, without the consent
of the Holder of each Debenture so affected, or (ii) reduce the aforesaid
percentage of Debentures, the Holders of which are required to consent to any
such supplemental indenture, without the consent of the Holders of each
Debenture then outstanding and affected thereby.  The Indenture also contains
provisions permitting the Holders of a majority in aggregate principal amount
of the Debentures at the time outstanding affected thereby, on behalf of all of
the Holders of the Debentures, to waive any past default in the performance of
any of the covenants contained in the Indenture, or established pursuant to the
Indenture, and its consequences, except a default in the payment of the
principal of or premium, if any, or interest on any of the Debentures of such
series.  Any such consent or waiver by the registered Holder of this Debenture
(unless revoked as provided in the Indenture) shall be conclusive and binding
upon such Holder and upon all future Holders and owners of this Debenture and
of any Debenture issued in exchange herefor or in place hereof (whether by
registration of transfer or otherwise), irrespective of whether or not any
notation of such consent or waiver is made upon this Debenture.

     No reference herein to the Indenture and no provision of this Debenture or
of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of and premium, if any, and
interest on this Debenture at the time and place and at the rate and in the
money herein prescribed.

     The Company shall have the right at any time during the term of the
Debentures and from time to time to extend the interest payment period of such
Debentures for up to 20 consecutive quarters (an "Extended Interest Payment
Period"), at the end of which period the Company shall pay all interest then
accrued and unpaid (together with interest thereon at the rate specified for
the Debentures to the extent that payment of such interest is enforceable under
applicable law).  Before the termination of any such Extended Interest Payment
Period, the Company may further extend such Extended Interest Payment Period,
provided that such Extended Interest Payment Period together with all such
further extensions thereof shall not exceed 20 consecutive quarters.  At the
termination of any such Extended Interest Payment Period and upon the payment
of all accrued and unpaid interest and any additional amounts then due, the
Company may commence a new Extended Interest Payment Period.

     As provided in the Indenture and subject to certain limitations therein
set forth, this Debenture is transferable by the registered Holder hereof on
the Security Register of the Company, upon surrender of this Debenture for
registration of transfer at the office or agency of the Trustee in Boston,
Massachusetts accompanied by a written instrument or instruments of transfer in
form satisfactory to the Company or the Trustee duly executed by the registered
Holder hereof or his attorney duly authorized in writing, and thereupon one or
more new Debentures of authorized denominations and for the same aggregate
principal amount and series will be issued to the designated transferee or
transferees.  No service charge will be made for any such transfer, but the
Company may require payment of a sum sufficient to cover any tax or other
governmental charge payable in relation thereto.


<PAGE>   7


     Prior to due presentment for registration of transfer of this Debenture,
the Company, the Trustee, any paying agent and the Security Registrar may deem
and treat the registered holder hereof as the absolute owner hereof (whether or
not this Debenture shall be overdue and notwithstanding any notice of ownership
or writing hereon made by anyone other than the Security Registrar) for the
purpose of receiving payment of or on account of the principal hereof and
premium, if any, and interest due hereon and for all other purposes, and
neither the Company nor the Trustee nor any paying agent nor any Security
Registrar shall be affected by any notice to the contrary.

     No recourse shall be had for the payment of the principal of or the
interest on this Debenture, or for any claim based hereon, or otherwise in
respect hereof, or based on or in respect of the Indenture, against any
incorporator, stockholder, officer or director, past, present or future, as
such, of the Company or of any predecessor or successor corporation, whether by
virtue of any constitution, statute or rule of law, or by the enforcement of
any assessment or penalty or otherwise, all such liability being, by the
acceptance hereof and as part of the consideration for the issuance hereof,
expressly waived and released.

     All terms used in this Debenture that are defined in the Indenture shall
have the meanings assigned to them in the Indenture.

     The Debentures are issuable only in registered form without coupons in
denominations of $25 and any integral multiple thereof.  This Global Debenture
is exchangeable for Debentures in definitive form only under certain limited
circumstances set forth in the Indenture.  Debentures of this series so issued
are issuable only in registered form without coupons in denominations of $25
and any integral multiple thereof.





<PAGE>   1
                                                                     EXHIBIT 4.5




                                 STATE STREET BANK AND TRUST COMPANY, not in its
                                 individual capacity but solely as Trustee

                                 By PAUL D. ALLEN

                                 Name: Paul D. Allen
                                 Title: Vice President

                                 WILLIAM R. KOHLS

                                 William R. Kohls
                                 not in his individual capacity but solely as
                                 Trustee 



                                  IBC CAPITAL


                              AMENDED AND RESTATED


                                TRUST AGREEMENT


                                     among


                   INDEPENDENT BANK CORPORATION, as Depositor


            STATE STREET BANK AND TRUST COMPANY, as Property Trustee


                 WILMINGTON TRUST COMPANY, as Delaware Trustee,


                                      and


                    THE ADMINISTRATIVE TRUSTEES NAMED HEREIN

                         Dated as of December 17, 1996
<PAGE>   2


                               TABLE OF CONTENTS

<TABLE>
<CAPTION>                                        
                                                                                                                      PAGE
                                                                                                                      ----
<S>                                                                                                                    <C>
ARTICLE I
         Defined Terms  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
         Section 101.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
                                                                                                                     
ARTICLE II
         Establishment of the Trust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
         Section 201.  Name.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
         Section 202.  Office of the Delaware Trustee; Principal Place of Business. . . . . . . . . . . . . . . . . . . 11
         Section 203.  Initial Contribution of Trust Property; Organizational Expenses. . . . . . . . . . . . . . . . . 11
         Section 204.  Issuance of the Preferred Securities.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
         Section 205.  Issuance of the Common Securities; Subscription and Purchase of                               
                           Debentures.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
         Section 206.  Declaration of Trust.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
         Section 207.  Authorization to Enter into Certain Transactions.  . . . . . . . . . . . . . . . . . . . . . . . 12
         Section 208.  Assets of Trust. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
         Section 209.  Title to Trust Property. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
                                                                                                                     
ARTICLE III
         Payment Account  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
         Section 301.  Payment Account. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
                                                                                                                     
ARTICLE IV
         Distributions; Redemption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
         Section 401.  Distributions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
         Section 402.  Redemption.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
         Section 403. Subordination of Common Securities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
         Section 404.  Payment Procedures.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
         Section 405.  Tax Returns and Reports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
         Section 406.  Payment of Taxes, Duties, Etc. of the Trust. . . . . . . . . . . . . . . . . . . . . . . . . . . 20
         Section 407.  Payments under Indenture.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
                                                                                                                     
ARTICLE V
         Trust Securities Certificates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
         Section 501.  Initial Ownership. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
         Section 502.  The Trust Securities Certificates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
         Section 503.  Execution and Delivery of Trust Securities Certificates. . . . . . . . . . . . . . . . . . . . . 21
         Section 504.  Registration of Transfer and Exchange of Preferred Securities Certificates.  . . . . . . . . . . 21
         Section 505.  Mutilated, Destroyed, Lost or Stolen Trust Securities Certificates.  . . . . . . . . . . . . . . 22
         Section 506.  Persons Deemed Securityholders.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
         Section 507.  Access to List of Securityholders' Names and Addresses. . . . . . . . . . . . . . . . . . . . . .23   
         Section 508.  Maintenance of Office or Agency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
                                                                                                                          
</TABLE>                                         
<PAGE>   3

<TABLE>
<S>                                                                                                                     <C>
         Section 509.  Appointment of Paying Agent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
         Section 510.  Ownership of Common Securities by Depositor. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
         Section 511.  Book-Entry Preferred Securities Certificates; Common Securities                               
                           Certificate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
         Section 512.  Notices to Clearing Agency.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
         Section 513.  Definitive Preferred Securities Certificates.  . . . . . . . . . . . . . . . . . . . . . . . . . 25
         Section 514.  Rights of Securityholders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
                                                                                                                     
ARTICLE VI                                                                                                           
         Acts of Securityholders; Meetings; Voting  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
         Section 601.  Limitations on Voting Rights.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
         Section 602.  Notice of Meetings.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
         Section 603.  Meetings of Preferred Securityholders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
         Section 604.  Voting Rights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
         Section 605.  Proxies, etc.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
         Section 606.  Securityholder Action by Written Consent.  . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
         Section 607.  Record Date for Voting and Other Purposes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
         Section 608.  Acts of Securityholders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
         Section 609.  Inspection of Records. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
                                                                                                                     
ARTICLE VII                                                                                                          
         Representations and Warranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
         Section 701.  Representations and Warranties of the Bank.  . . . . . . . . . . . . . . . . . . . . . . . . . . 31
         Section 702.  Representations and Warranties of the Delaware Bank.   . . . . . . . . . . . . . . . . . . . . . 32
         Section 703.  Representations and Warranties of Depositor. . . . . . . . . . . . . . . . . . . . . . . . . . . 33
                                                                                                                     
ARTICLE VIII                                                                                                         
         The Trustees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
         Section 801.  Certain Duties and Responsibilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
         Section 802.  Certain Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
         Section 803.  Certain Rights of Property Trustee.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
         Section 804.  Not Responsible for Recitals or Issuance of Securities.  . . . . . . . . . . . . . . . . . . . . 37
         Section 805.  May Hold Securities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
         Section 806.  Compensation; Indemnity; Fees. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
         Section 807.  Corporate Property Trustee Required; Eligibility of Trustees.  . . . . . . . . . . . . . . . . . 38
         Section 808.  Conflicting Interests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
         Section 809.  Co-Trustees and Separate Trustee.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
         Section 810.  Resignation and Removal; Appointment of Successor. . . . . . . . . . . . . . . . . . . . . . . . 40
         Section 811.  Acceptance of Appointment by Successor.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
         Section 812.  Merger, Conversion, Consolidation or Succession to Business. . . . . . . . . . . . . . . . . . . 42
         Section 813.  Preferential Collection of Claims Against Depositor or Trust.  . . . . . . . . . . . . . . . . . 42
         Section 814.  Reports by Property Trustee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43  
         Section 815.  Reports to the Property Trustee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
         Section 816.  Evidence of Compliance with Conditions Precedent.  . . . . . . . . . . . . . . . . . . . . . . . 43
                                                                                                                          
</TABLE>


                                      ii
<PAGE>   4

<TABLE>
<S>                                                                                                                     <C>
         Section 817.   Number of Trustees. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
         Section 818.   Delegation of Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
         Section 819.   Voting  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
                                                                                                                     
ARTICLE IX                                                                                                           
         Termination,   Liquidation and Merger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
         Section 901.   Termination upon Expiration Date. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
         Section 902.   Early Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
         Section 903.   Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
         Section 904.   Liquidation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
         Section 905.   Mergers, Consolidations, Amalgamations or Replacements of the Trust . . . . . . . . . . . . . . 47
                                                                                                                     
ARTICLE X                                                                                                            
         Miscellaneous Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
         Section 1001.  Limitation of Rights of Securityholders.  . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
         Section 1002.  Amendment.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
         Section 1003.  Separability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
         Section 1004.  Governing Law.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
         Section 1005.  Payments Due on Non-Business Day. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
         Section 1006.  Successors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
         Section 1007.  Headings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
         Section 1008.  Reports, Notices and Demands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
         Section 1009.  Agreement Not to Petition.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
         Section 1010.  Trust Indenture Act; Conflict with Trust Indenture Act. . . . . . . . . . . . . . . . . . . . . 51
         Section 1011.  Acceptance of Terms of Trust Agreement, Guarantee and Indenture.  . . . . . . . . . . . . . . . 51





         Exhibit A                Certificate of Trust
         Exhibit B                Form of Certificate Depository Agreement
         Exhibit C                Form of Common Securities Certificate
         Exhibit D                Form of Expense Agreement
         Exhibit E                Form of Preferred Securities Certificate
</TABLE>





                                      iii
<PAGE>   5

                             CROSS-REFERENCE TABLE*
<TABLE>
<CAPTION>
SECTION OF
TRUST INDENTURE ACT                                                                  SECTION OF
OF 1939, AS AMENDED                                                                  INDENTURE
- -------------------                                                                  ---------
<S>                                                                                  <C>
310(a)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  807
310(a)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  807
310(a)(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  807
310(a)(4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  207(a)(ii)
310(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  808
311(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  813
311(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  813
312(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  507
312(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  507
312(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  507
313(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  814(a)
313(a)(4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  814(b)
313(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  814(b)
313(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  108
313(d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  814(c)
314(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  815
314(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
314(c)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  816
314(c)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  816
314(c)(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
314(d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
314(e)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  101, 816
315(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  801(a), 803(a)
315(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  802, 108
315(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  801(a)
315(d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  801, 803
315(e)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
316(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
316(a)(1)(A)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
316(a)(1)(B)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
316(a)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
316(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
316(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  607
317(a)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
317(a)(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Not Applicable
317(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  509
318(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1010
</TABLE>

       * This Cross-Reference Table does not constitute part of the
         Trust Agreement and shall not affect the interpretation of any
         of its terms or provisions.





                                       iv
<PAGE>   6

         AMENDED AND RESTATED TRUST AGREEMENT, dated as of December 17, 1996,
among Independent Bank Corporation, a Michigan corporation (including any
successors or assigns, the "Depositor"), (ii) State Street Bank and Trust
Company, a Massachusetts banking corporation duly organized and existing under
the laws of the Commonwealth of Massachusetts, as property trustee (the
"Property Trustee" and, in its separate corporate capacity and not in its
capacity as Property Trustee, the "Bank"), (iii) Wilmington Trust Company, a
Delaware banking corporation, duly organized and existing under the laws of the
State of Delaware, as Delaware trustee (the "Delaware Trustee," and, in its
separate corporate capacity and not in its capacity as Delaware Trustee, the
"Delaware Bank") (iv) Charles C. Van Loan, an individual, and William R.
Kohls, an individual, and James J. Twarozynski, an individual, each of whose
address is c/o Independent Bank Corporation, 230 West Main Street, Ionia,
Michigan 48846 (each an "Administrative Trustee" and collectively the
"Administrative Trustees") (the Property Trustee, the Delaware Trustee and the
Administrative Trustees referred to collectively as the "Trustees") and (v) the
several Holders, as hereinafter defined.

                              W I T N E S S E T H:

         WHEREAS, the Depositor, the Delaware Trustee, and Charles C. Van Loan,
William R. Kohls and James J. Twarozynski, each as an Administrative Trustee,
have heretofore duly declared and established a business trust pursuant to the
Delaware Business Trust Act by the entering into of that certain Trust
Agreement, dated as of November 7, 1996 (the "Original Trust Agreement"), and
by the execution and filing by the Delaware Trustee, the Depositor and the
Administrative Trustees with the Secretary of State of the State of Delaware of
the Certificate of Trust, filed on November 7, 1996, the form of which is
attached as Exhibit A; and

         WHEREAS, the Depositor, the Delaware Trustee, the Property Trustee and
the Administrative Trustees desire to amend and restate the Original Trust
Agreement in its entirety as set forth herein to provide for, among other
things, (i) the issuance of the Common Securities by the Trust to the
Depositor, (ii) the issuance and sale of the Preferred Securities by the Trust
pursuant to the Underwriting Agreement, (iii) the acquisition by the Trust from
the Depositor of all of the right, title and interest in the Debentures and
(iv) the appointment of the Property Trustee;

         NOW THEREFORE, in consideration of the agreements and obligations set
forth herein and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, each party, for the benefit of
the other parties and for the benefit of the Securityholders, hereby amends and
restates the Original Trust Agreement in its entirety and agrees as follows:

                                   ARTICLE I
                                 DEFINED TERMS

         SECTION 101.  DEFINITIONS.

                 For all purposes of this Trust Agreement, except as otherwise
expressly provided or unless the context otherwise requires:
<PAGE>   7


                 (a)      the terms defined in this Article have the meanings
assigned to them in this Article and include the plural as well as the
singular;

                 (b)      all other terms used herein that are defined in the
Trust Indenture Act, either directly or by reference therein, have the meanings
assigned to them therein;

                 (c)      unless the context otherwise requires, any reference
to an "Article" or a "Section" refers to an Article or a Section, as the case
may be, of this Trust Agreement; and

                 (d)      the words "herein", "hereof" and "hereunder" and
other words of similar import refer to this Trust Agreement as a whole and not
to any particular Article, Section or other subdivision.

                 "Act" has the meaning specified in Section 608.

                 "Additional Amount" means, with respect to Trust Securities of
a given Liquidation Amount and/or a given period, the amount of additional
interest accrued on interest in arrears and paid by the Depositor on a Like
Amount of Debentures for such period.

                 "Additional Sums" has the meaning specified in section 2.5(c)
of the Indenture.

                 "Administrative Trustee" means each of William R. Kohls,
Charles C. Van Loan, and James J. Twarozynski, solely in his capacity as
Administrative Trustee of the Trust formed and continued hereunder and not in
his individual capacity, or such Administrative Trustee's successor in interest
in such capacity, or any successor trustee appointed as herein provided.

                 "Affiliate" of any specified Person means any other Person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified Person.  For the purposes of this
definition, "control" when used with respect to any specified Person means the
power to direct the management and policies of such Person, directly or
indirectly, whether through the ownership of voting securities, by contract or
otherwise; and the terms "controlling" and "controlled" have meanings
correlative to the foregoing.

                 "Bank" has the meaning specified in the preamble to this Trust
Agreement.

                 "Bankruptcy Event" means, with respect to any Person:

         (a)     the entry of a decree or order by a court having jurisdiction
in the premises adjudging such Person a bankrupt or insolvent, or approving as
properly filed a petition seeking liquidation or reorganization of or in
respect of such Person under the Federal Bankruptcy Code or any other similar
applicable Federal or State law, and the continuance of any such decree or
order unvacated and unstayed for a period of 90 days; or the commencement of an
involuntary case under the Federal Bankruptcy Code in respect of such Person,
which shall continue undismissed for a period of 90 days or entry of an order
for relief in such case; or the entry of a decree or order of a court having





                                       2
<PAGE>   8

jurisdiction in the premises for the appointment on the ground of insolvency or
bankruptcy of a receiver, custodian, liquidator, trustee or assignee in
bankruptcy or insolvency of such Person or of its property, or for the winding
up or liquidation of its affairs, and such decree or order shall have remained
in force unvacated and unstayed for a period of 90 days; or

         (b)  the institution by such Person of proceedings to be adjudicated a
voluntary bankrupt, or the consent by such Person to the filing of a bankruptcy
proceeding against it, or the filing by such Person of a petition or answer or
consent seeking liquidation or reorganization under the Federal Bankruptcy Code
or other similar applicable Federal or State law, or the consent by such Person
to the filing of any such petition or to the appointment on the ground of
insolvency or bankruptcy of a receiver or custodian or liquidator or trustee or
assignee in bankruptcy or insolvency of such Person or of its property, or
shall make a general assignment for the benefit of creditors.

                 "Bankruptcy Laws" has the meaning specified in Section 1009.

                 "Board Resolution" means a copy of a resolution certified by
the Secretary or an Assistant Secretary of the Depositor to have been duly
adopted by the Depositor's Board of Directors, or such committee of the Board
of Directors or officers of the Depositor to which authority to act on behalf
of the Board of Directors has been delegated, and to be in full force and
effect on the date of such certification, and delivered to the appropriate
Trustee.

                 "Book Entry Preferred Securities Certificates" means
certificates representing Preferred Securities issued in global, fully
registered form to the Clearing Agency as described in Section 511.

                 "Business Day" means a day other than (a) a Saturday or
Sunday, (b) a day on which banking institutions in The City of New York are
authorized or required by law or executive order to remain closed, or (c) a day
on which the Property Trustee's Corporate Trust Office or the Corporate Trust
Office of the Debenture Trustee is closed for business.

                 "Certificate Depository Agreement" means the agreement among
the Trust, the Depositor and The Depositary Trust Company, as the initial
Clearing Agency, dated as of the Closing Date, relating to the Trust Securities
Certificates, substantially in the form attached as Exhibit B, as the same may
be amended and supplemented from time to time.

                 "Certificate of Trust" means the certificate of trust filed
with the Secretary of State of the State of Delaware with respect to the Trust,
as amended or restated from time to time.

                 "Clearing Agency" means an organization registered as a
"clearing agency" pursuant to Section 17A of the Securities Exchange Act of
1934, as amended. The Depositary Trust Company will be the initial Clearing
Agency.





                                       3
<PAGE>   9

                 "Clearing Agency Participant" means a broker, dealer, bank,
other financial institution or other Person for whom from time to time a
Clearing Agency effects book-entry transfers and pledges of securities
deposited with the Clearing Agency.

                 "Closing Date" means the date of execution and delivery of
this Trust Agreement.

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

                 "Commission" means the Securities and Exchange Commission, as
from time to time constituted, created under the Securities Exchange Act of
1934, as amended, or, if at any time after the execution of this instrument
such Commission is not existing and performing the duties now assigned to it
under the Trust Indenture Act, then the body performing such duties at such
time.

                 "Common Security" means an undivided beneficial interest in
the assets of the Trust, having a Liquidation Amount of $25 and having the
rights provided therefor in this Trust Agreement, including the right to
receive Distributions and a Liquidation Distribution as provided herein.

                 "Common Securities Certificate" means a certificate evidencing
ownership of Common Securities, substantially in the form attached as Exhibit
C.

                 "Corporate Trust Office" means the principal corporate trust
office of the Property Trustee located at Two International Place, 4th Floor,
Boston, Massachusetts 02110.

                 "Debenture Event of Default" means an "Event of Default" as
defined in the Indenture.

                 "Debenture Redemption Date" means, with respect to any
Debentures to be redeemed under the Indenture, the date fixed for redemption
under the Indenture.

                 "Debenture Tax Event" means a "Tax Event" as defined in the
Indenture.

                 "Debenture Trustee" means State Street Bank and Trust Company,
a Massachusetts banking corporation organized under the laws of the
Commonwealth of Massachusetts and any successor thereto, as trustee under the
Indenture.

                 "Debentures" means the $17,783,500  aggregate principal amount
of the Depositor's 9.25% Subordinated Debentures, issued pursuant to the
Indenture.

                 "Definitive Preferred Securities Certificates" means either or
both (as the context requires) of (a) Preferred Securities Certificates issued
as Book-Entry Preferred Securities Certificates as provided in Section 511(a)
and (b) Preferred Securities Certificates issued in certificated, fully
registered form as provided in Section 513.





                                       4
<PAGE>   10


                 "Delaware Bank" has the meaning specified in the preamble to
this Trust Agreement.

                 "Delaware Business Trust Act" means Chapter 38 of Title 12 of
the Delaware Code, 12 Delaware Code Sections 3801 et seq, as it may be amended
from time to time.

                 "Delaware Trustee" means the commercial bank or trust company
identified as the "Delaware Trustee" in the preamble to this Trust Agreement
solely in its capacity as Delaware Trustee of the Trust formed and continued
hereunder and not in its individual capacity, or its successor in interest in
such capacity, or any successor trustee appointed as herein provided.

                 "Depositor" has the meaning specified in the preamble to this
Trust Agreement.

                 "Distribution Date" has the meaning specified in Section
401(a).

                 "Distributions" means amounts payable in respect of the Trust
Securities as provided in Section 401.

                 "Event of Default" means any one of the following events
(whatever the reason for such Event of Default and whether it shall be
voluntary or involuntary or be effected by operation of law or pursuant to any
judgment, decree or order of any court or any order, rule or regulation of any
administrative or governmental body):

                          (a)     the occurrence of a Debenture Event of
Default; or

                          (b)     default by the Trust in the payment of any
Distribution when it becomes due and payable, and continuation of such default
for a period of 30 days; or

                          (c)     default by the Trust in the payment of any
Redemption Price of any Trust Security when it becomes due and payable; or

                          (d)     default in the performance, or breach, in any
material respect, of any covenant or warranty of the Trustees in this Trust
Agreement (other than a covenant or warranty a default in the performance of
which or the breach of which is dealt with in clause (b) or (c), above) and
continuation of such default or breach for a period of 60 days after there has
been given, by registered or certified mail, to the defaulting Trustee or
Trustees by the Holders of at least 25% in aggregate liquidation preference of
the Outstanding Preferred Securities a written notice specifying such default
or breach and requiring it to be remedied and stating that such notice is a
"Notice of Default" hereunder; or

                          (e)     the occurrence of a Bankruptcy Event with
respect to the Property Trustee and the failure by the Depositor to appoint a
successor Property Trustee within 60 days thereof.

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





                                       5
<PAGE>   11

                 "Expense Agreement" means the Agreement as to Expenses and
Liabilities between the Depositor and the Trust, substantially in the form
attached as Exhibit D, as amended from time to time.

                 "Expiration Date" has the meaning specified in Section 901.

                 "Extended Interest Payment Period" has the meaning specified
in Section 4.1 of the Indenture.

                 "Global Debenture" has the meaning specified in Section 2.4 of
the Indenture.

                 "Guarantee" means the Guarantee Agreement executed and
delivered by the Depositor and State Street Bank and Trust Company as trustee,
contemporaneously with the execution and delivery of this Trust Agreement, for
the benefit of the holders of the Preferred Securities, as amended from time to
time.

                 "Indenture" means the Indenture, dated as of December 17,
1996, between the Depositor and the Debenture Trustee, as trustee, as amended
or supplemented from time to time.

                 "Investment Company Event" means the receipt by the Trust of
an Opinion of Counsel, rendered by a law firm experienced in such matters, to
the effect that, as a result of the occurrence of a change in law or regulation
or a change in interpretation or application of law or regulation by any
legislative body, court, governmental agency or regulatory authority (a "Change
in 1940 Act Law"), the Trust is or will be considered an "investment company"
that is required to be registered under the 1940 Act, which Change in 1940 Act
Law becomes effective on or after the date of original issuance of the
Preferred Securities under this Trust Agreement.

                 "Lien" means any lien, pledge, charge, encumbrance, mortgage,
deed of trust, adverse ownership interest, hypothecation, assignment, security
interest or preference, priority or other security agreement or preferential
arrangement of any kind or nature whatsoever.

                 "Like Amount" means (a) with respect to a redemption of Trust
Securities, Trust Securities having a Liquidation Amount equal to the principal
amount of Debentures to be contemporaneously redeemed in accordance with the
Indenture and the proceeds of which will be used to pay the Redemption Price of
such Trust Securities and (b) with respect to a distribution of Debentures to
Holders of Trust Securities in connection with a termination or liquidation of
the Trust, Debentures having a principal amount equal to the Liquidation Amount
of the Trust Securities of the Holder to whom such Debentures are distributed.

                 "Liquidation Amount" means the stated amount of $25 per Trust
Security.

                 "Liquidation Date" means the date on which Debentures are to
be distributed to Holders of Trust Securities in connection with a termination
and liquidation of the Trust pursuant to Section 904(a).





                                       6
<PAGE>   12

         "Liquidation Distribution" has the meaning specified in Section
904(d).

         "1940 Act" means the Investment Company Act of 1940, as amended.

         "Officers' Certificate" means a certificate signed by the President or
a Vice President and by the Treasurer or an Assistant Treasurer or the
Controller or an Assistant Controller or the Secretary or an Assistant
Secretary, of the Depositor, and delivered to the appropriate Trustee.  One of
the officers signing an Officers' Certificate given pursuant to Section 816
shall be the principal executive, financial or accounting officer of the
Depositor.  Any Officers' Certificate delivered with respect to compliance with
a condition or covenant provided for in this Trust Agreement shall include:

                          (a)     a statement that each officer signing the
Officers' Certificate has read the covenant or condition and the definitions
relating thereto;

                          (b)     a brief statement of the nature and scope of
the examination or investigation undertaken by each officer in rendering the
Officers' Certificate;

                          (c)     a statement that each such officer has made
such examination or investigation as, in such officer's opinion, is necessary
to enable such officer to express an informed opinion as to whether or not such
covenant or condition has been complied with; and

                          (d)     a statement as to whether, in the opinion of
each such officer, such condition or covenant has been complied with.

                 "Opinion of Counsel" means a written opinion of counsel, who
may be counsel for the Trust, the Property Trustee, the Delaware Trustee or the
Depositor, but not an employee of any thereof, and who shall be reasonably
acceptable to the Property Trustee.

                 "Original Trust Agreement" has the meaning specified in the
recitals to this Trust Agreement.

                 "Outstanding", when used with respect to Preferred Securities,
means, as of the date of determination, all Preferred Securities theretofore
executed and delivered under this Trust Agreement, except:

                          (a)     Preferred securities theretofore canceled by
the Property Trustee or delivered to the Property Trustee for cancellation;

                          (b)     Preferred Securities for whose payment or
redemption money in the necessary amount has been theretofore deposited with
the Property Trustee or any Paying Agent for the Holders of such Preferred
Securities; provided that, if such Preferred Securities are to be redeemed,
notice of such redemption has been duly given pursuant to this Trust Agreement;
and





                                       7
<PAGE>   13

                          (c)     Preferred Securities which have been paid or
in exchange for or in lieu of which other Preferred Securities have been
executed and delivered pursuant to Sections 504, 505, 511 and 513; provided,
however, that in determining whether the Holders of the requisite Liquidation
Amount of the Outstanding Preferred Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, Preferred
Securities owned by the Depositor, any Trustee or any Affiliate of the
Depositor or any Trustee shall be disregarded and deemed not to be Outstanding,
except that (a) in determining whether any Trustee shall be protected in
relying upon any such request, demand, authorization, direction, notice,
consent or waiver, only Preferred Securities that such Trustee knows to be so
owned shall be so disregarded and (b) the foregoing shall not apply at any time
when all of the outstanding Preferred Securities are owned by the Depositor,
one or more of the Trustees and/or any such Affiliate.  Preferred Securities so
owned which have been pledged in good faith may be regarded as Outstanding if
the pledgee establishes to the satisfaction of the Administrative Trustees the
pledgee's right so to the Depositor or any Affiliate of the Depositor.

                 "Owner" means each Person who is the beneficial owner of a
Book Entry Preferred Securities Certificate as reflected in the records of the
Clearing Agency or, if a Clearing Agency Participant is not the Owner, then as
reflected in the records of a Person maintaining an account with such Clearing
Agency (directly or indirectly, in accordance with the rules of such clearing
Agency).

                 "Paying Agent" means any paying agent or co-paying agent
appointed pursuant to Section 509 and shall initially be the Bank.

                 "Payment Account" means a segregated non-interest-bearing
corporate trust account maintained by the Property Trustee with the Bank in its
trust department for the benefit of the Securityholders in which all amounts
paid in respect of the Debentures will be held and from which the Property
Trustee shall make payments to the Securityholders in accordance with Sections
401 and 402.

                 "Person" means any individual, corporation, partnership, joint
venture, trust, limited liability company or corporation, unincorporated
organization or government or any agency or political subdivision thereof.

                 "Preferred Security" means an undivided beneficial interest in
the assets of the Trust, having a Liquidation Amount of $25 and having the
rights provided therefor in this Trust Agreement, including the right to
receive Distributions and a Liquidation Distribution as provided herein.

                 "Preferred Securities Certificate", means a certificate
evidencing ownership of Preferred Securities, substantially in the form
attached as Exhibit E.

                 "Property Trustee" means the commercial bank or trust company
identified as the "Property Trustee", in the preamble to this Trust Agreement
solely in its capacity as Property Trustee of the Trust heretofore formed and
continued hereunder and not in its individual capacity,





                                       8
<PAGE>   14

or its successor in interest in such capacity, or any successor property
trustee appointed as herein provided.

                 "Redemption Date" means, with respect to any Trust Security to
be redeemed, the date fixed for such redemption by or pursuant to this Trust
Agreement; provided that each Debenture Redemption Date and the stated maturity
of the Debentures shall be a Redemption Date for a Like Amount of Trust
Securities.

                 "Redemption Price" means, with respect to any Trust Security,
the Liquidation Amount of such Trust Security, plus accumulated and unpaid
Distributions to the Redemption Date, plus the related amount of the premium,
if any, paid by the Depositor upon the concurrent redemption of a Like Amount
of Debentures, allocated on a pro rata basis (based on Liquidation Amounts)
among the Trust Securities.

                 "Relevant Trustee" shall have the meaning specified in Section
810.

                 "Securities Register" and "Securities Registrar" have the
respective meanings specified in Section 504.

                 "Securityholder" or "Holder" means a Person in whose name a
Trust Security or Securities is registered in the Securities Register; any such
Person is a beneficial owner within the meaning of the Delaware Business Trust
Act.

                 "Tax Event" means the receipt by the Trust of an opinion of
Counsel, rendered by a law firm experienced in such matters, to the effect
that, as a result of any amendment to, or change (including any announced
prospective change) in, the laws (or any regulations thereunder) of the United
States or any political subdivision or taxing authority thereof or therein, or
as a result of any official administrative pronouncement or judicial decision
interpreting or applying such laws or regulations, which amendment or change is
effective or which pronouncement or decision is announced on or after the date
of issuance of the Preferred Securities under this Trust Agreement, there is
more than an insubstantial risk that (i) the Trust is, or will be within 90
days after the date of such Opinion of Counsel, subject to United States
federal income tax with respect to income received or accrued on the
Debentures, (ii) interest payable by the Depositor on the Debentures is not, or
within 90 days after the date of such Opinion of Counsel, will not be,
deductible by the Depositor, in whole or in part, for United States federal
income tax purposes or (iii) the Trust is, or will be within 90 days after the
date of such Opinion of Counsel, subject to more than a de minimis amount of
other taxes, duties, assessments or other governmental charges.

                 "Trust" means the Delaware business trust created and
continued hereby and identified on the cover page to this Trust Agreement.

                 "Trust Agreement" means this Amended and Restated Trust
Agreement, as the same may be modified, amended or supplemented in accordance
with the applicable provisions hereof, including all exhibits hereto,
including, for all purposes of this Trust Agreement and any such





                                       9
<PAGE>   15

modification, amendment or supplement, the provisions of the Trust Indenture
Act that are deemed to be a part of and govern this Trust Agreement and any
such modification, amendment or supplement, respectively.

                 "Trust Indenture Act" means the Trust Indenture Act of 1939 as
in force at the date as of which this instrument was executed; provided,
however, that in the event the Trust Indenture Act of 1939 is amended after
such date, "Trust Indenture Act" means, to the extent required by any such
amendment, the Trust Indenture Act of 1939 as so amended.

                 "Trust Property" means (a) the Debentures, (b) the rights of
the Property Trustee under the Guarantee, (c) any cash on deposit in, or owing
to, the Payment Account and (d) all proceeds and rights in respect of the
foregoing and any other property and assets for the time being held or deemed
to be held by the Property Trustee pursuant to the trusts of this Trust
Agreement.

                 "Trust Security" means any one of the Common Securities or the
Preferred Securities.

                 "Trust Securities Certificate" means any one of the Common
Securities Certificates or the Preferred Securities Certificates.

                 "Trustees" means, collectively, the Property Trustee, the
Delaware Trustee and the Administrative Trustees.

                 "Underwriting Agreement" means the Underwriting Agreement,
dated as of December 13, 1996, among the Trust, the Depositor and the
Underwriter named therein.

                                   ARTICLE II
                           ESTABLISHMENT OF THE TRUST

         SECTION 201.  NAME.

         The Trust created and continued hereby shall be known as "IBC Capital
Finance," as such name may be modified from time to time by the Administrative
Trustees following written notice to the Holders of Trust Securities and the
other Trustees, in which name the Trustees may engage in the transactions
contemplated hereby, make and execute contracts and other instruments on behalf
of the Trust and sue and be sued.





                                       10
<PAGE>   16

         SECTION 202.  OFFICE OF THE DELAWARE TRUSTEE; PRINCIPAL PLACE OF
BUSINESS.

         The address of the Delaware Trustee in the State of Delaware is c/o
Wilmington Trust Company, 1100 North Market Street, Wilmington, Delaware 19890,
Attention: Corporate Trust Administration, or such other address in the State
of Delaware as the Delaware Trustee may designate by written notice to the
Securityholders and the Depositor.  The principal executive office of the Trust
is c/o Independent Bank Corporation, 230 West Main Street, Ionia, Michigan
48846.

         SECTION 203.  INITIAL CONTRIBUTION OF TRUST PROPERTY; ORGANIZATIONAL
EXPENSES.

         The Trustees acknowledge receipt in trust from the Depositor in
connection with the Original Trust Agreement of the sum of $10, which
constituted the initial Trust Property.  The Depositor shall pay organizational
expenses of the Trust as they arise or shall, upon request of any Trustee,
promptly reimburse such Trustee for any such expenses paid by such Trustee.
The Depositor shall make no claim upon the Trust Property for the payment of
such expenses.

         SECTION 204.  ISSUANCE OF THE PREFERRED SECURITIES.

         On December 13, 1996 the Depositor and an Administrative Trustee, on
behalf of the Trust and pursuant to the Original Trust Agreement, executed and
delivered the Underwriting Agreement.  Contemporaneously with the execution and
delivery of this Trust Agreement, an Administrative Trustee, on behalf of the
Trust, shall execute in accordance with Section 502 and deliver in accordance
with the Underwriting Agreement Preferred Securities Certificates, registered
in the name of the nominee of the initial Clearing Agency, in an aggregate
amount of 690,000 Preferred Securities having an aggregate Liquidation Amount
of $17,250,000, against receipt of the aggregate purchase price of such
Preferred Securities of $17,250,000, which amount such Administrative Trustee
shall promptly deliver to the Property Trustee.

         SECTION 205.  ISSUANCE OF THE COMMON SECURITIES; SUBSCRIPTION AND
PURCHASE OF DEBENTURES.

         Contemporaneously with the execution and delivery of this Trust
Agreement, an Administrative Trustee, on behalf of the Trust, shall execute and
deliver Common Securities certificates, registered in the name of the
Depositor, in an aggregate amount of 21,340 Common Securities having an
aggregate liquidation amount of $533,500, against receipt of the aggregate
purchase price of such Common Securities of $533,500, which amount such
Administrative Trustee shall promptly deliver to the Property Trustee.

         Contemporaneously with the execution and delivery of this Trust
Agreement, an Administrative Trustee, on behalf of the Trust, shall subscribe
to and purchase from the Depositor Debentures, registered in the name of the
Property Trustee on behalf of the Trust and having an aggregate principal
amount equal to $17,783,500, and, in satisfaction of the purchase price for
such Debentures, an Administrative Trustee, on behalf of the Trust, shall
transfer $17,783,500 to the Depositor.





                                       11
<PAGE>   17

         SECTION 206.  DECLARATION OF TRUST.

         The exclusive purposes and functions of the Trust are (a) to issue and
sell Trust Securities and use the proceeds from such sale to acquire the
Debentures, and (b) to engage in those activities necessary, convenient or
incidental thereto.  The Depositor hereby appoints the Trustees as trustees of
the Trust, to have all the rights, powers and duties to the extent set forth
herein, and the Trustees hereby accept such appointment.  The Property Trustee
hereby declares that it will hold the Trust Property in trust upon and subject
to the conditions set forth herein for the benefit of the Securityholders.  The
Administrative Trustees shall  have all rights, powers and duties set forth
herein and in accordance with applicable law with respect to accomplishing the
purposes of the Trust.  The Delaware Trustee shall not be entitled to exercise
any powers, nor shall the Delaware Trustee have any of the duties and
responsibilities, of the Property Trustee or the Administrative Trustees set
forth herein.  The Delaware Trustee shall be one of the Trustees of the Trust
for the sole and limited purpose of fulfilling the requirements of Section 3807
of the Delaware Business Trust Act.

         SECTION 207.  AUTHORIZATION TO ENTER INTO CERTAIN TRANSACTIONS.

                 (a)      The Trustees shall conduct the affairs of the Trust
in accordance with the terms of this Trust Agreement.  Subject to the
limitations set forth in paragraph (b) of this Section and Article VIII, and in
accordance with the following provisions (i) and (ii), the Administrative
Trustees shall have the authority to enter into all transactions and agreements
determined by the Administrative Trustees to be appropriate in exercising the
authority, express or implied, otherwise granted to the Administrative Trustees
under this Trust Agreement, and to perform all acts in furtherance thereof,
including without limitation, the following:

                          (i)     As among the Trustees, each Administrative
Trustee, acting singly or jointly, shall have the power and authority to act on
behalf of the Trust with respect to the following matters:

                                  (A)      the issuance and sale of the Trust
Securities;

                                  (B)      to cause the Trust to enter into,
and to execute, deliver and perform on behalf of the Trust, the Expense
Agreement and the Certificate Depository Agreement and such other agreements or
documents as may be necessary or desirable in connection with the purposes and
function of the Trust;

                                  (C)      assisting in the registration of the
Preferred Securities under the Securities Act of 1933, as amended, and under
state securities or blue sky laws, and the qualification of this Trust
Agreement as a trust indenture under the Trust Indenture Act;

                                  (D)      assisting in the listing of the
Preferred Securities upon the Nasdaq National Market or such securities
exchange or exchanges as shall be determined by the Depositor and the
registration of the Preferred Securities under the Securities Exchange Act of
1934,





                                       12
<PAGE>   18

as amended, and the preparation and filing of all periodic and other reports
and other documents pursuant to the foregoing;

                                  (E)      the sending of notices (other than
notices of default) and other information regarding the Trust Securities and
the Debentures to the Securityholders in accordance with this Trust Agreement;

                                  (F)      the appointment of a Paying Agent,
authenticating agent and Securities Registrar in accordance with this Trust
Agreement;

                                  (G)      to the extent provided in this Trust
Agreement, the winding up of the affairs of and liquidation of the Trust and
the preparation, execution and filing of the certificate of cancellation with
the Secretary of State of the State of Delaware;

                                  (H)      to take all action that may be
necessary or appropriate for the preservation and the continuation of the
Trust's valid existence, rights, franchises and privileges as a statutory
business trust under the laws of the State of Delaware and of each other
jurisdiction in which such existence is necessary to protect the limited
liability of the Holders of the Preferred Securities or to enable the Trust to
effect the purposes for which the Trust was created; and

                                  (I)      the taking of any action incidental
to the foregoing as the Administrative Trustees may from time to time determine
is necessary or advisable to give effect to the terms of this Trust Agreement
for the benefit of the Securityholders (without consideration of the effect of
any such action on any particular Securityholder).

                          (ii)    As among the Trustees, the Property Trustee
shall have the power, duty and authority to act on behalf of the Trust with
respect to the following matters:

                                  (A)      the establishment of the Payment
Account;

                                  (B)      the receipt of the Debentures;

                                  (C)      the collection of interest,
principal and any other payments made in respect of the Debentures in the
Payment Account;

                                  (D)      the distribution of amounts owed to
the Securityholders in respect of the Trust Securities in accordance with the
terms of this Trust Agreement;

                                  (E)      the exercise of all of the rights, 
powers and privileges of a holder of the Debentures;

                                  (F)      the sending of notices of default
and other information regarding the Trust Securities and the Debentures to the
Securityholders in accordance with this Trust Agreement;





                                       13
<PAGE>   19

                                  (G)      the distribution of the Trust
Property in accordance with the terms of this Trust Agreement;

                                  (H)      to the extent provided in this Trust
Agreement, the winding up of the affairs of and liquidation of the Trust;

                                  (I)      after an Event of Default the taking
of any action incidental to the foregoing as the Property Trustee may from time
to time determine is necessary or advisable to give effect to the terms of this
Trust Agreement and protect and conserve the Trust Property for the benefit of
the Securityholders (without consideration of the effect of any such action on
any particular Securityholder);

                                  (J)      registering transfers of the Trust
Securities in accordance with this Trust Agreement; and

                                  (K)      except as otherwise provided in this
Section 207(a) (ii), the Property Trustee shall have none of the duties,
liabilities, powers or the authority of the Administrative Trustees set forth
in Section 207(a)(i).

                 (b)      So long as this Trust Agreement remains in effect,
the Trust (or the Trustees acting on behalf of the Trust) shall not undertake
any business, activities or transaction except as expressly provided herein or
contemplated hereby.  In particular, the Trustees shall not (i) acquire any
investments or engage in any activities not authorized by this Trust Agreement,
(ii) sell, assign, transfer, exchange, mortgage, pledge, set-off or otherwise
dispose of any of the Trust Property or interests therein, including to
Securityholders, except as expressly provided herein, (iii) take any action
that would cause the Trust to fail or cease to qualify as a "grantor trust" for
United States federal income tax purposes, (iv) incur any indebtedness for
borrowed money or issue any other debt or (v) take or consent to any action
that would result in the placement of a Lien on any of the Trust Property.  The
Administrative Trustees shall defend all claims and demands of all Persons at
any time claiming any Lien on any of the Trust Property adverse to the interest
of the Trust or the Securityholders in their capacity as Securityholders.

                 (c)      In connection with the issue and sale of the
Preferred Securities, the Depositor shall have the right and responsibility to
assist the Trust with respect to, or effect on behalf of the Trust, the
following (and any actions taken by the Depositor in furtherance of the
following prior to the date of this Trust Agreement are hereby ratified and
confirmed in all respects):

                          (i)     the preparation and filing by the Trust with
the Commission and the execution on behalf of the Trust of a registration
statement on the appropriate form in relation to the Preferred Securities and
the Debentures, including any amendments thereto;

                          (ii)    the determination of the states in which to
take appropriate action to qualify or, register for sale all or part of the
Preferred Securities and to do any and all such acts, other than actions which
must be taken by or on behalf of the Trust, and advise the Trustees of



                                      14

<PAGE>   20

actions they must take on behalf of the Trust, and prepare for execution and
filing any documents to be executed and filed by the Trust or on behalf of the
Trust, as the Depositor deems necessary or advisable in order to comply with
the applicable laws of any such states;

                          (iii)   the preparation for filing by the Trust and
execution on behalf of the Trust of an application to the Nasdaq National
Market or a national stock exchange or other organizations for listing upon
notice of issuance of any Preferred Securities and to file or cause an
Administrative Trustee to file thereafter with such exchange or organization
such notifications and documents as may be necessary from time to time;

                          (iv)    the preparation for filing by the Trust with
the Commission and the execution on behalf of the Trust of a registration
statement on Form 8-A relating to the registration of the Preferred Securities
under Section 12(b) or 12(g) of the Exchange Act, including any amendments
thereto;

                          (v)     the negotiation of the terms of, and the
execution and delivery of, the Underwriting Agreement providing for the sale of
the Preferred Securities; and

                          (vi)    the taking of any other actions necessary or 
desirable to carry out any of the foregoing activities.

                 (d)      Notwithstanding anything herein to the contrary, the
Administrative Trustees are authorized and directed to conduct the affairs of
the Trust and to operate the Trust so that the Trust will not be deemed to be
an "investment company" required to be registered under the 1940 Act, will be
classified as a "grantor trust" and not as an association taxable as a
corporation for United States federal income tax purposes and so that the
Debentures will be treated as indebtedness of the Depositor for United States
federal income tax purposes.  In this connection, subject to Section 1002, the
Depositor and the Administrative Trustees are authorized to take any action,
not inconsistent with applicable law or this Trust Agreement, that each of the
Depositor and the Administrative Trustees determines in their discretion to be
necessary or desirable for such purposes.

         SECTION 208.  ASSETS OF TRUST.

         The assets of the Trust shall consist of the Trust Property.

         SECTION 209.  TITLE TO TRUST PROPERTY.

         Legal title to all Trust Property shall be vested at all times in the
Property Trustee (in its capacity as such) and shall be held and administered
by the Property Trustee for the benefit of the Securityholders in accordance
with this Trust Agreement.

                                  ARTICLE III
                                PAYMENT ACCOUNT




                                      15
<PAGE>   21

         SECTION 301.  PAYMENT ACCOUNT.

                 (a)      On or prior to the Closing Date, the Property Trustee
shall establish the Payment Account.  The Property Trustee and any agent of the
Property Trustee shall have exclusive control and sole right of withdrawal with
respect to the Payment Account for the purpose of making deposits and
withdrawals from the Payment Account in accordance with this Trust Agreement.
All monies and other property deposited or held from time to time in the
Payment Account shall be held by the Property Trustee in the Payment Account
for the exclusive benefit of the Securityholders and for distribution as herein
provided, including (and subject to) any priority of payments provided for
herein.

                 (b)      The Property Trustee shall deposit in the Payment
Account, promptly upon receipt, all payments of principal of or interest on,
and any other payments or proceeds with respect to, the Debentures.  Amounts
held in the Payment Account shall not be invested by the Property Trustee
pending distribution thereof.

                                   ARTICLE IV
                           DISTRIBUTIONS; REDEMPTION

         SECTION 401.  DISTRIBUTIONS.

                 (a)      Distributions on the Trust Securities shall be
cumulative, and will accumulate whether or not there are funds of the Trust
available for the payment of Distributions.  Distributions shall accumulate
from December 18, 1996, and, except during any Extended Interest Payment Period
with respect to the Debentures, shall be payable quarterly in arrears on March
31, June 30, September 30 and December 31 of each year, commencing on March 31,
1997 (each date on which distributions are payable in accordance with the
foregoing a "Distribution Date"). If any date on which a Distribution is
otherwise payable on the Trust Securities is not a Business Day, then the
payment of such Distribution shall be made on the next succeeding day that is a
Business Day (and without any additional Distributions, interest or other
payment in respect of any such delay), in each case with the same force and
effect as if made on the date such payment was originally payable.

                 (b)      The Trust Securities represent undivided beneficial
interests in the Trust Property, and, as a practical matter, the Distributions
on the Trust Securities shall be payable at a rate of 9.25% per annum of the
Liquidation Amount of the Trust Securities.  The amount of Distributions
payable for any full period shall be computed on the basis of a 360-day year of
twelve 30-day months.  The amount of Distributions for any partial period shall
be computed on the basis of the number of days elapsed in a 360-day year of
twelve 30 day months.  During any Extended Interest Payment Period with respect
to the Debentures, Distributions on the Preferred Securities will be deferred
for a period equal to the Extended Interest Payment Period.  The amount of
Distributions payable for any period shall include the Additional Amounts, if
any.

                 (c)      Distributions on the Trust Securities shall be made
by the Property Trustee solely from the Payment Account and shall be payable on
each Distribution Date only to the extent




                                      16
<PAGE>   22

that the Trust has funds then on hand and immediately available in the Payment
Account for the payment of such Distributions.

                 (d)      Distributions on the Trust Securities with respect to
a Distribution Date shall be payable to the Holders thereof as they appear on
the Securities Register for the Trust Securities on the relevant record date,
which shall be one Business Day prior to such Distribution Date; provided,
however, that in the event that the Preferred Securities do not remain in
book-entry-only form, the relevant record date shall be the 15th day of the
month in which the relevant Distribution Date occurs.

         SECTION 402.  REDEMPTION.

                 (a)      On each Debenture Redemption Date and on the stated
maturity of the Debentures, the Trust will be required to redeem a Like Amount
of Trust Securities at the Redemption Price.

                 (b)      Notice of redemption shall be given by the Property
Trustee by first-class mail, postage prepaid, mailed not less than 30 nor more
than 60 days prior to the Redemption Date to each Holder of Trust Securities to
be redeemed, at such Holder's address appearing in the Securities Register.
The Property Trustee shall have no responsibility for the accuracy of any CUSIP
number contained in such notice.  All notices of redemption shall state:

                          (i)     the Redemption Date;

                          (ii)    the Redemption Price;

                          (iii)   the CUSIP number;

                          (iv)    if less than all the Outstanding Trust
Securities are to be redeemed, the identification and the aggregate Liquidation
Amount of the particular Trust Securities to be redeemed; and

                          (v)     that on the Redemption Date the Redemption
Price will become due and payable upon each such Trust Security to be redeemed
and that Distributions thereon will cease to accumulate on and after said date.

                 (c)      The Trust Securities redeemed on each Redemption Date
shall be redeemed at the Redemption Price with the proceeds from the
contemporaneous redemption of Debentures.  Redemptions of the Trust Securities
shall be made and the Redemption Price shall be payable on each Redemption Date
only to the extent that the Trust has immediately available funds then on hand
and available in the Payment Account for the payment of such Redemption Price.

                 (d)      If the Property Trustee gives a notice of redemption
in respect of any Preferred Securities, then, by 12:00 noon, New York City
time, on the Redemption Date, subject to




                                      17
<PAGE>   23

Section 402(c), the Property Trustee will, so long as the Preferred Securities
are in book-entry-only form, deposit with the Clearing Agency for the Preferred
Securities funds sufficient to pay the applicable Redemption Price and will
give such Clearing Agency irrevocable instructions and authority to pay the
Redemption Price to the holders thereof.  If the Preferred Securities are no
longer in book-entry-only form, the Property Trustee, subject to Section
402(c), will deposit with the Paying Agent funds sufficient to pay the
applicable Redemption Price and will give the Paying Agent irrevocable
instructions and authority to pay the Redemption Price to the Holders thereof
upon surrender of their Preferred Securities Certificates.  Notwithstanding the
foregoing, Distributions payable on or prior to the Redemption Date for any
Trust Securities called for redemption shall be payable to the Holders of such
Trust Securities as they appear on the Register for the Trust Securities on the
relevant record dates for the related Distribution Dates.  If notice of
redemption shall have been given and funds deposited as required, then upon the
date of such deposit, all rights of Securityholders holding Trust Securities so
called for redemption will cease, except the right of such Securityholders to
receive the Redemption Price and any Distribution payable on or prior to the
Redemption Date, but without interest, and such Securities will cease to be
Outstanding.  In the event that any date on which any Redemption Price is
payable is not a Business Day, then payment of the Redemption Price payable on
such date will be made on the next succeeding day that is a Business Day (and
without any interest or other payment in respect of any such delay), with the
same force and effect as if made on such date.  In the event that payment of
the Redemption Price in respect of any Trust Securities called for redemption
is improperly withheld or refused and not paid either by the Trust or by the
Depositor pursuant to the Guarantee, Distributions on such Trust Securities
will continue to accumulate, at the then applicable rate, from the Redemption
Date originally established by the Trust for such Trust Securities to the date
such Redemption Price is actually paid, in which case the actual payment date
will be the date fixed for redemption for purposes of calculating the
Redemption Price.

                 (e)      Payment of the Redemption Price on the Trust
Securities shall be made to the record holders thereof as they appear on the
Securities Register for the Trust Securities on the relevant record date, which
shall be one Business Day prior to the relevant Redemption Date; provided,
however, that in the event that the Preferred Securities do not remain in
book-entry-only form, the relevant record date shall be a date at least fifteen
days prior to the relevant Redemption Date.

                 (f)      Subject to Section 403(a), if less than all the
Outstanding Trust Securities are to be redeemed on a Redemption Date, then the
aggregate Liquidation Amount of Trust Securities to be redeemed shall be
allocated on a pro rata basis (based on Liquidation Amounts) among the Common
Securities and the Preferred Securities.  The particular Preferred Securities
to be redeemed shall be selected not more than 60 days prior to the Redemption
Date by the Property Trustee from the outstanding Preferred Securities not
previously called for redemption, by such method (including, without
limitation, by lot) as the Property Trustee shall deem fair and appropriate and
which may provide for the selection for redemption of portions (equal to $25 or
an integral multiple of $25 in excess thereof) of the Liquidation Amount of
Preferred Securities of a denomination larger than $25.  The Property Trustee
shall promptly notify the Securities Registrar in writing of the Preferred
Securities selected for redemption and, in the case of any Preferred Securities
selected for




                                      18
<PAGE>   24

partial redemption, the Liquidation Amount thereof to be redeemed.  For all
purposes of this Trust Agreement, unless the context otherwise requires, all
provisions relating to the redemption of Preferred Securities shall relate, in
the case of any Preferred Securities redeemed or to be redeemed only in part,
to the portion of the Liquidation Amount of Preferred Securities which has been
or is to be redeemed.

         SECTION 403. SUBORDINATION OF COMMON SECURITIES.

                 (a)      Payment of Distributions (including Additional
Amounts, if applicable) on, and the Redemption Price of, the Trust Securities,
as applicable, shall be made, subject to Section 402(f), pro rata among the
Common Securities and the Preferred Securities based on the Liquidation Amount
of the Trust Securities; provided, however, that if on any Distribution Date or
Redemption Date any Event of Default resulting from a Debenture Event of
Default shall have occurred and be continuing, no payment of any Distribution
(including Additional Amounts, if applicable) on, or Redemption Price of, any
Common Security, and no other payment on account of the redemption, liquidation
or other acquisition of Common Securities, shall be made unless payment in full
in cash of all accumulated and unpaid Distributions (including Additional
Amounts, if applicable) on all Outstanding Preferred Securities for all
Distribution periods terminating on or prior thereto, or in the case of payment
of the Redemption Price the full amount of such Redemption Price on all
Outstanding Preferred Securities then called for redemption, shall have been
made or provided for, and all funds immediately available to the Property
Trustee shall first be applied to the payment in full in cash of all
Distributions (including Additional Amounts, if applicable) on, or the
Redemption Price of, Preferred Securities then due and payable.

                 (b)      In the case of the occurrence of any Event of Default
resulting from a Debenture Event of Default, the Holder of Common Securities
will be deemed to have waived any right to act with respect to any such Event
of Default under this Trust Agreement until the effect of all such Events of
Default with respect to the Preferred Securities shall have been cured, waived
or otherwise eliminated.  Until any such Event of Default under this Trust
Agreement with respect to the Preferred Securities shall have been so cured,
waived or otherwise eliminated, the Property Trustee shall act solely on behalf
of the Holders of the Preferred Securities and not the Holder of the Common
Securities, and only the Holders of the Preferred Securities will have the
right to direct the Property Trustee to act on their behalf.

         SECTION 404.  PAYMENT PROCEDURES.

         Payments of Distributions (including Additional Amounts, if
applicable) in respect of the Preferred Securities shall be made by check
mailed to the address of the Person entitled thereto as such address shall
appear on the Securities Register or, if the Preferred Securities are held by a
Clearing Agency, such Distributions shall be made to the Clearing Agency in
immediately available funds, which shall credit the relevant Persons' accounts
at such Clearing Agency on the applicable distribution dates.  Payments in
respect of the Common Securities shall be made in such manner as shall be
mutually agreed between the Property Trustee and the Common Securityholder.




                                      19
<PAGE>   25

         SECTION 405.  TAX RETURNS AND REPORTS.

         The Administrative Trustees shall prepare (or cause to be prepared),
at the Depositor's expense, and file all United States federal, state and local
tax and information returns and reports required to be filed by or in respect
of the Trust.  In this regard, the Administrative Trustees shall (a) prepare
and file (or cause to be prepared and filed) the appropriate Internal Revenue
Service Form required to be filed in respect of the Trust in each taxable year
of the Trust and (b) prepare and furnish (or cause to be prepared and
furnished) to each Securityholder the appropriate Internal Revenue Service form
required to be furnished to such Securityholder or the information required to
be provided on such form.  The Administrative Trustees shall provide the
Depositor with a copy of all such returns and reports promptly after such
filing or furnishing.  The Property Trustee shall comply with United States
federal withholding and backup withholding tax laws and information reporting
requirements with respect to any payments to Securityholders under the Trust
Securities.

         SECTION 406.  PAYMENT OF TAXES, DUTIES, ETC. OF THE TRUST.

         Upon receipt under the Debentures of Additional Sums, the Property
Trustee, at the direction of an Administrative Trustee or the Depositor, shall
promptly pay any taxes, duties or governmental charges of whatsoever nature
(other than withholding taxes) imposed on the Trust by the United States or any
other taxing authority.

         SECTION 407.  PAYMENTS UNDER INDENTURE.

         Any amount payable hereunder to any Holder of Preferred Securities
shall be reduced by the amount of any corresponding payment such Holder has
directly received under the Indenture pursuant to Section 514(b) or (c) hereof.

                                   ARTICLE V
                         TRUST SECURITIES CERTIFICATES

         SECTION 501.  INITIAL OWNERSHIP.

         Upon the creation of the Trust and the contribution by the Depositor
pursuant to Section 203 and until the issuance of the Trust Securities, and at
any time during which no Trust Securities are outstanding, the Depositor shall
be the sole beneficial owner of the Trust.

         SECTION 502.  THE TRUST SECURITIES CERTIFICATES.

         The Preferred Securities Certificates shall be issued in minimum
denominations of $25 Liquidation Amount and integral multiples of $25 in excess
thereof, and the Common Securities Certificates shall be issued in
denominations of $25 Liquidation Amount and integral multiples thereof.  The
Trust Securities Certificates shall be executed on behalf of the Trust by
manual signature of at least one Administrative Trustee.  Trust Securities
Certificates bearing the manual signatures of individuals who were, at the time
when such signatures shall have been affixed,




                                      20
<PAGE>   26

authorized to sign on behalf of the Trust, shall be validly issued and entitled
to the benefits of this Trust Agreement, notwithstanding that such individuals
or any of them shall have ceased to be so authorized prior to the delivery of
such Trust Securities Certificates or did not hold such offices at the date of
delivery of such Trust Securities Certificates.  A transferee of a Trust
Securities Certificate shall become a Securityholder, and shall be entitled to
the rights and subject to the obligations of a Securityholder hereunder, upon
due registration of such Trust Securities Certificate in such transferee's name
pursuant to Sections 504, 511 and 513.

         SECTION 503.  EXECUTION AND DELIVERY OF TRUST SECURITIES CERTIFICATES.

         On the Closing Date and on the date on which the Underwriter exercises
the Option, as applicable (the "Option Closing Date"), the Administrative
Trustees shall cause Trust Securities Certificates, in an aggregate Liquidation
Amount as provided in Sections 204 and 205, to be executed on behalf of the
Trust by at least one of the Administrative Trustees and delivered to or upon
the written order of the Depositor, signed by its President, any Vice
President, the Treasurer or any Assistant Treasurer without further corporate
action by the Depositor, in authorized denominations.

         SECTION 504.  REGISTRATION OF TRANSFER AND EXCHANGE OF PREFERRED
SECURITIES CERTIFICATES.

         The Depositor shall keep or cause to be kept, at the office or agency
maintained pursuant to Section 508, a register or registers for the purpose of
registering Trust Securities Certificates and transfers and exchanges of
Preferred Securities Certificates (herein referred to as the "Securities
Register") in which the registrar designated by the Depositor (the "Securities
Registrar"), subject to such reasonable regulations as it may prescribe, shall
provide for the registration of Preferred Securities Certificates and Common
Securities Certificates (subject to Section 510 in the case of the Common
Securities Certificates) and registration of transfers and exchanges of
Preferred Securities Certificates as herein provided.  The Property Trustee
shall be the initial Securities Registrar.

         Upon surrender for registration of transfer of any Preferred
Securities Certificate at the office or agency maintained pursuant to Section
508, the Administrative Trustees or any one of them shall execute and deliver,
in the name of the designated transferee or transferees, one or more new
Preferred Securities Certificates in authorized denominations of a like
aggregate Liquidation Amount dated the date of execution by such Administrative
Trustee or Trustees.  The Securities Registrar shall not be required to
register the transfer of any Preferred Securities that have been called for
redemption.  At the option of a Holder, Preferred Securities Certificates may
be exchanged for other Preferred Securities Certificates in authorized
denominations of the same class and of a like aggregate Liquidation Amount upon
surrender of the Preferred Securities Certificates to be exchanged at the
office or agency maintained pursuant to Section 508.

         Every Preferred Securities Certificate presented or surrendered for
registration of transfer or exchange shall be accompanied by a written
instrument of transfer in form satisfactory to the Property Trustee and the
Securities Registrar duly executed by the Holder or his attorney duly




                                      21
<PAGE>   27

authorized in writing.  Each Preferred Securities Certificate surrendered for
registration of transfer or exchange shall be canceled and subsequently
disposed of by the Property Trustee in accordance with its customary practice.
The Trust shall not be required to (i) issue, register the transfer of, or
exchange any Preferred Securities during a period beginning at the opening of
business 15 calendar days before the date of mailing of a notice of redemption
of any Preferred Securities called for redemption and ending at the close of
business on the day of such mailing or (ii) register the transfer of or
exchange any Preferred Securities so selected for redemption, in whole or in
part, except the unredeemed portion of any such Preferred Securities being
redeemed in part.

         No service charge shall be made for any registration of transfer or
exchange of Preferred Securities Certificates, but the Securities Registrar may
require payment of a sum sufficient to cover any tax or governmental charge
that may be imposed in connection with any transfer or exchange of Preferred
Securities Certificates.

         SECTION 505.  MUTILATED, DESTROYED, LOST OR STOLEN TRUST SECURITIES
CERTIFICATES.

         If (a) any mutilated Trust Securities certificate shall be surrendered
to the Securities Registrar, or if the Securities Registrar shall receive
evidence to its satisfaction of the destruction, loss or theft of any Trust
Securities Certificate and (b) there shall be delivered to the Securities
Registrar and the Administrative Trustees such security or indemnity as may be
required by them to save each of them harmless, then in the absence of notice
that such Trust Securities Certificate shall have been acquired by a bona fide
purchaser, the Administrative Trustees, or any one of them, on behalf of the
Trust shall execute and make available for delivery, in exchange for or in lieu
of any such mutilated, destroyed, lost or stolen Trust Securities Certificate,
a new Trust Securities Certificate of like class, tenor and denomination.  In
connection with the issuance of any new Trust Securities Certificate under this
Section, the Administrative Trustees or the Securities Registrar may require
the payment of a sum sufficient to cover any tax or other governmental charge
that may be imposed in connection therewith.  Any duplicate Trust Securities
Certificate issued pursuant to this Section shall constitute conclusive
evidence of an undivided beneficial interest in the assets of the Trust, as if
originally issued, whether or not the lost, stolen or destroyed Trust
Securities Certificate shall be found at any time.

         SECTION 506.  PERSONS DEEMED SECURITYHOLDERS.

         The Trustees, the Paying Agent and the Securities Registrar shall
treat the Person in whose name any Trust Securities Certificate shall be
registered in the Securities Register as the owner of such Trust Securities
Certificate for the purpose of receiving Distributions and for all other
purposes whatsoever, and neither the Trustees nor the Securities Registrar
shall be bound by any notice to the contrary.

         SECTION 507.  ACCESS TO LIST OF SECURITYHOLDERS' NAMES AND ADDRESSES.

         At any time when the Property Trustee is not also acting as the
Securities Registrar, the Administrative Trustees or the Depositor shall
furnish or cause to be furnished to the Property




                                      22
<PAGE>   28

Trustee (a) semi-annually on or before January 15 and July 15 in each year, a
list, in such form as the Property Trustee may reasonably require, of the names
and addresses of the Securityholders as of the most recent record date and (b)
promptly after receipt by any Administrative Trustee or the Depositor of a
request therefor from the Property Trustee in order to enable the Property
Trustee to discharge its obligations under this Trust Agreement, in each case
to the extent such information is in the possession or control of the
Administrative Trustees or the Depositor and is not identical to a previously
supplied list or has not otherwise been received by the Property Trustee in its
capacity as Securities Registrar.  The rights of Securityholders to communicate
with other Securityholders with respect to their rights under this Trust
Agreement or under the Trust Securities, and the corresponding rights of the
Trustee shall be as provided in the Trust Indenture Act.  Each Holder, by
receiving and holding a Trust Securities Certificate, and each owner shall be
deemed to have agreed not to hold the Depositor, the Property Trustee or the
Administrative Trustees accountable by reason of the disclosure of its name and
address, regardless of the source from which such information was derived.

         SECTION 508.  MAINTENANCE OF OFFICE OR AGENCY.

         The Administrative Trustees shall maintain in Boston, Massachusetts,
an office or offices or agency or agencies where Preferred Securities
Certificates may be surrendered for registration of transfer or exchange and
where notices and demands to or upon the Trustees in respect of the Trust
Securities Certificates may be served.  The Administrative Trustees initially
designate the principal corporate trust office of the Property Trustee, at
State Street Bank and Trust Company, Two International Place, 4th Floor,
Boston, Massachusetts 02110, Attention Corporate Trust Department, as the
principal corporate trust office for such purposes.  The Administrative
Trustees shall give prompt written notice to the Depositor and to the
Securityholders of any change in the location of the Securities Register or any
such office or agency.

         SECTION 509.  APPOINTMENT OF PAYING AGENT.

         The Paying Agent shall make Distributions to Securityholders from the
Payment Account and shall report the amounts of such Distributions to the
Property Trustee and the Administrative Trustees.  Any Paying Agent shall have
the revocable power to withdraw funds from the Payment Account for the purpose
of making the Distributions referred to above.  The Administrative Trustees may
revoke such power and remove the Paying Agent if such Trustees determine in
their sole discretion that the Paying Agent shall have failed to perform its
obligations under this Trust Agreement in any material respect.  The Paying
Agent shall initially be the Property Trustee, and any co-paying agent chosen
by the Property Trustee, and acceptable to the Administrative Trustees and the
Depositor.  Any Person acting as Paying Agent shall be permitted to resign as
Paying Agent upon 30 days' written notice to the Administrative Trustees, the
Property Trustee and the Depositor.  In the event that the Property Trustee
shall no longer be the Paying Agent or a successor Paying Agent shall resign or
its authority to act be revoked, the Administrative Trustees shall appoint a
successor that is acceptable to the Property Trustee and the Depositor to act
as Paying Agent (which shall be a bank or trust company). The Administrative
Trustees shall cause such successor Paying Agent or any additional Paying Agent
appointed by the Administrative Trustees to execute and




                                      23
<PAGE>   29

deliver to the Trustees an instrument in which such successor Paying Agent or
additional Paying Agent shall agree with the Trustees that as Paying Agent,
such successor Paying Agent or additional Paying Agent will hold all sums, if
any, held by it for payment to the Securityholders in trust for the benefit of
the Securityholders entitled thereto until such sums shall be paid to such
Securityholders.  The Paying Agent shall return all unclaimed funds to the
Property Trustee and upon removal of a Paying Agent such Paying Agent shall
also return all funds in its possession to the Property Trustee.  The
provisions of Sections 801, 803 and 806 shall apply to the Property Trustee
also in its role as Paying Agent, for so long as the Property Trustee shall act
as Paying Agent and, to the extent applicable, to any other paying agent
appointed hereunder.  Any reference in this Agreement to the Paying Agent shall
include any co-paying agent unless the context requires otherwise.

         SECTION 510.  OWNERSHIP OF COMMON SECURITIES BY DEPOSITOR.

         On the Closing Date, the Depositor shall acquire and retain beneficial
and record ownership of the Common Securities.  To the fullest extent permitted
by law, any attempted transfer of the Common Securities (other than a transfer
in connection with a merger or consolidation of the Depositor into another
corporation pursuant to Section 12.1 of the Indenture) shall be void.  The
Administrative Trustees shall cause each Common Securities Certificate issued
to the Depositor to contain a legend stating "THIS CERTIFICATE IS NOT
TRANSFERABLE".

         SECTION 511.  BOOK-ENTRY PREFERRED SECURITIES CERTIFICATES; COMMON
SECURITIES CERTIFICATE.

                 (a)      The Preferred Securities Certificates, upon original
issuance, will be issued in the form of a typewritten Preferred Securities
Certificate or Certificates representing Book-Entry Preferred Securities
Certificates, to be delivered to or held on behalf of the Depositary Trust
Company, the initial Clearing Agency, by, or on behalf of, the Trust.  Such
Book-Entry Preferred Securities Certificate or Certificates shall initially be
registered on the Securities Register in the name of Cede & Co., the nominee of
the initial Clearing Agency, and no beneficial owner will receive a Definitive
Preferred Securities Certificate representing such beneficial owner's interest
in such Preferred Securities, except as provided in Section 513, unless and
until Definitive Preferred Securities Certificates have been issued to
beneficial owners pursuant to Section 513:

                          (i)     the provisions of this Section 511(a) shall
be in full force and effect;

                          (ii)    the Securities Registrar, the Paying Agent
and the Trustees shall be entitled to deal with the Clearing Agency for all
purposes of this Trust Agreement relating to the Book Entry Preferred
Securities Certificates (including the payment of the Liquidation Amount of and
Distributions on the Book-Entry Preferred Securities) as the sole Holder of
Book-Entry Preferred Securities and shall have no obligations to the Owners
thereof;

                          (iii)   to the extent that the provisions of this
Section 511 conflict with any other provisions of this Trust Agreement, the
provisions of this Section 511 shall control; and




                                      24
<PAGE>   30

                          (iv)    the rights of the Owners of the Book-Entry
Preferred Securities Certificates shall be exercised only through the Clearing
Agency and shall be limited to those established by law and agreements between
such Owners and the Clearing Agency and/or the Clearing Agency Participants.
Pursuant to the Certificate Depository Agreement, unless and until Definitive
Preferred Securities Certificates are issued pursuant to Section 513, the
initial Clearing Agency will make book-entry transfers among the Clearing
Agency Participants and receive and transmit payments on the Preferred
Securities to such Clearing Agency Participants.  Any Clearing Agency
designated pursuant hereto will not be deemed an agent of the Trustees for any
purpose.

                 (b)      A single Common Securities Certificate representing
the Common Securities shall be issued to the Depositor in the form of a
definitive Common Securities Certificate.

         SECTION 512.  NOTICES TO CLEARING AGENCY.

         To the extent that a notice or other communication to the Owners is
required under this Trust Agreement, unless and until Definitive Preferred
Securities Certificates shall have been issued to Owners pursuant to Section
513, the Trustees shall give all such notices and communications specified
herein to be given to Owners to the Clearing Agency, and shall have no
obligations to the Owners.

         SECTION 513.  DEFINITIVE PREFERRED SECURITIES CERTIFICATES.

         If (a) the Depositor advises the Trustees in writing that the Clearing
Agency is no longer willing or able to properly discharge its responsibilities
with respect to the Preferred Securities Certificates, and the Depositor is
unable to locate a qualified successor, or if at any time the Depositary ceases
to be a clearing agency registered under the Securities Exchange Act of 1934,
as amended, at a time when the Depositary is required to be so registered to
act as such depositary, (b) the Depositor at its option advises the Trustees in
writing that it elects to terminate the book-entry system through the Clearing
Agency, or (c) after the occurrence of a Debenture Event of Default, owners of
Preferred Securities Certificates representing beneficial interests aggregating
at least a majority of the Liquidation Amount advise the Property Trustee in
writing that the continuation of a book-entry system through the Clearing
Agency is no longer in the best interests of the owners of Preferred Securities
Certificates, then the Property Trustee shall notify the Clearing Agency, and
the Clearing Agency shall notify all Owners of Preferred Securities
Certificates, of the occurrence of any such event and of the availability of
the Definitive Preferred Securities Certificates to owners of such class or
classes, as applicable, requesting the same.  Upon surrender to the Property
Trustee of the typewritten Preferred Securities Certificate or Certificates
representing the Book-Entry Preferred Securities Certificates by the Clearing
Agency, accompanied by registration instructions, the Administrative Trustees,
or any one of them, shall execute the Definitive Preferred Securities
Certificates in accordance with the instructions of the Clearing Agency.
Neither the Securities Registrar nor the Trustees shall be liable for any delay
in delivery of such instructions and may conclusively rely on, and shall be
protected in relying on, such instructions.  Upon the issuance of Definitive
Preferred Securities Certificates, the Trustees shall recognize the Holders of
the Definitive Preferred Securities Certificates as Securityholders.  The
Definitive Preferred Securities




                                      25
<PAGE>   31

Certificates shall be printed, lithographed or engraved or may be produced in
any other manner as is reasonably acceptable to the Administrative Trustees, as
evidenced by the execution thereof by the Administrative Trustees or any one of
them.

         SECTION 514.  RIGHTS OF SECURITYHOLDERS.

                 (a)      The legal title to the Trust Property is vested
exclusively in the Property Trustee (in its capacity as such) in accordance
with Section 209, and the Securityholders shall not have any right or title
therein other than the undivided beneficial interest in the assets of the Trust
conferred by their Trust Securities and they shall have no right to call for
any partition or division of property, profits or rights of the Trust except as
described below.  The Trust Securities shall be personal property giving only
the rights specifically set forth therein and in this Trust Agreement.  The
Trust Securities shall have no preemptive or similar rights.  When issued and
delivered to Holders of the Preferred Securities against payment of the
purchase price therefor, the Preferred Securities will be fully paid and
nonassessable interests in the Trust.  The Holders of the Preferred Securities,
in their capacities as such, shall be entitled to the same limitation of
personal liability extended to stockholders of private corporations for profit
organized under the General Corporation Law of the State of Delaware.

                 (b)      For so long as any Preferred Securities remain
Outstanding, if, upon a Debenture Event of Default, the Debenture Trustee fails
or the holders of not less than 25% in principal amount of the outstanding
Debentures fail to declare the principal of all of the Debentures to be
immediately due and payable, the Holders of at least 25% in Liquidation Amount
of the Preferred Securities then Outstanding shall have such right by a notice
in writing to the Depositor and the Debenture Trustee; and upon any such
declaration such principal amount of and the accrued interest on all of the
Debentures shall become immediately due and payable, provided that the payment
of principal and interest on such Debentures shall remain subordinated to the
extent provided in the Indenture.

                 (c)      For so long as any Preferred Securities remain
outstanding, if, upon a Debenture Event of Default, arising from the failure to
pay interest or principal on the Debentures, the Holders of any Preferred
Securities then Outstanding shall, to the fullest extent permitted by law, have
the right to directly institute proceedings for enforcement of payment to such
Holders of principal of or interest on the Debentures having a principal amount
equal to the Liquidation Amount of the Preferred Securities of such Holders.

                                   ARTICLE VI
                   ACTS OF SECURITYHOLDERS; MEETINGS; VOTING

         SECTION 601.  LIMITATIONS ON VOTING RIGHTS.

                 (a)      Except as provided in this Section, in Sections 514,
810 and 1002 and in the Indenture and as otherwise required by law, no Holder
of Preferred Securities shall have any right to vote or in any manner otherwise
control the administration, operation and management of the




                                      26
<PAGE>   32

Trust or the obligations of the parties hereto, nor shall anything herein set
forth, or contained in the terms of the Trust Securities Certificates, be
construed so as to constitute the Securityholders from time to time as partners
or members of an association.

                 (b)      So long as any Debentures are held by the Property
Trustee, the Trustees shall not (i) direct the time, method and place of
conducting any proceeding for any remedy available to the Debenture Trustee, or
executing any trust or power conferred on the Debenture Trustee with respect to
such Debentures, (ii) waive any past default which is waivable under Article
Six of the Indenture, (iii) exercise any right to rescind or annul a
declaration that the principal of all the Debentures shall be due and payable
or (iv) consent to any amendment, modification or termination of the Indenture
or the Debentures, where such consent shall be required, without, in each case,
obtaining the prior approval of the Holders of at least a majority in
Liquidation Amount of all Outstanding Preferred Securities; provided, however,
that where a consent under the Indenture would require the consent of each
Holder of Outstanding Debentures affected thereby, no such consent shall be
given by the Property Trustee without the prior written consent of each holder
of Preferred Securities.  The Trustees shall not revoke any action previously
authorized or approved by a vote of the Holders of the Outstanding Preferred
Securities, except by a subsequent vote of the Holders of the outstanding
Preferred Securities.  The Property Trustee shall notify each Holder of the
Outstanding Preferred Securities of any notice of default received from the
Debenture Trustee with respect to the Debentures.  In addition to obtaining the
foregoing approvals of the Holders of the Preferred Securities, prior to taking
any of the foregoing actions, the Trustees shall, at the expense of the
Depositor, obtain an Opinion of Counsel experienced in such matters to the
effect that the Trust will continue to be classified as a grantor trust and not
as an association taxable as a corporation for United States federal income tax
purposes on account of such action.

                 (c)      If any proposed amendment to the Trust Agreement
provides for, or the Trustees otherwise propose to effect, (i) any action that
would adversely affect in any material respect the powers, preferences or
special rights of the Preferred Securities, whether by way of amendment to the
Trust Agreement or otherwise, or (ii) the dissolution, winding-up or
termination of the Trust, other than pursuant to the terms of this Trust
Agreement, then the Holders of Outstanding Preferred Securities as a class will
be entitled to vote on such amendment or proposal and such amendment or
proposal shall not be effective except with the approval of the Holders of at
least a majority in Liquidation Amount of the Outstanding Preferred Securities.
No amendment to this Trust Agreement may be made if, as a result of such
amendment, the Trust would cease to be classified as a grantor trust or would
be classified as an association taxable as a corporation for United States
federal income tax purposes.

         SECTION 602.  NOTICE OF MEETINGS.

         Notice of all meetings of the Preferred Securityholders, stating the
time, place and purpose of the meeting, shall be given by the Property Trustee
pursuant to Section 1008 to each Preferred Securityholder of record, at his
registered address, at least 15 days and not more than 90 days before the
meeting.  At any such meeting, any business properly before the meeting may be
so considered




                                      27
<PAGE>   33

whether or not stated in the notice of the meeting.  Any adjourned meeting may
be held as adjourned without further notice.

         SECTION 603.  MEETINGS OF PREFERRED SECURITYHOLDERS.

         No annual meeting of Securityholders is required to be held.  The
Administrative Trustees, however, shall call a meeting of Securityholders to
vote on any matter upon the written request of the Preferred Securityholders of
25% of the Outstanding Preferred Securities (based upon their aggregate
Liquidation Amount) and the Administrative Trustees or the Property Trustee
may, at any time in their discretion, call a meeting of Preferred
Securityholders to vote on any matters as to which the Preferred
Securityholders are entitled to vote.

         Preferred Securityholders of record of 50% of the Outstanding
Preferred Securities (based upon their aggregate Liquidation Amount), present
in person or by proxy, shall constitute a quorum at any meeting of
Securityholders.

         If a quorum is present at a meeting, an affirmative vote by the
Preferred Securityholders of record present, in person or by proxy, holding
more than a majority of the Preferred Securities (based upon their aggregate
Liquidation Amount) held by the Preferred Securityholders of record present,
either in person or by proxy, at such meeting shall constitute the action of
the Securityholders, unless this Trust Agreement requires a greater number of
affirmative votes.

         SECTION 604.  VOTING RIGHTS.

         Securityholders shall be entitled to one vote for each $25 of
Liquidation Amount represented by their Trust Securities in respect of any
matter as to which such Securityholders are entitled to vote.

         SECTION 605.  PROXIES, ETC.

         At any meeting of Securityholders, any Securityholder entitled to vote
thereat may vote by proxy, provided that no proxy, shall be voted at any
meeting unless it shall have been placed on file with the Administrative
Trustees, or with such other officer or agent of the Trust as the
Administrative Trustees may direct, for verification prior to the time at which
such vote shall be taken.  When Trust Securities are held jointly by several
persons, any one of them may vote at any meeting in person or by proxy in
respect of such Trust Securities, but if more than one of them shall be present
at such meeting in person or by proxy, and such joint owners or their proxies
so present disagree as to any vote to be cast, such vote shall not be received
in respect of such Trust Securities.  A proxy purporting to be executed by or
on behalf of a Securityholder shall be deemed valid unless challenged at or
prior to its exercise, and, the burden of proving invalidity shall rest on the
challenger.  No proxy shall be valid more than three years after its date of
execution.

         SECTION 606.  SECURITYHOLDER ACTION BY WRITTEN CONSENT.




                                      28
<PAGE>   34

         Any action which may be taken by Securityholders at a meeting may be
taken without a meeting if Securityholders holding more than a majority of all
Outstanding Trust Securities (based upon their aggregate Liquidation Amount)
entitled to vote in respect of such action (or such larger proportion thereof
as shall be required by any express provision of this Trust Agreement) shall
consent to the action in writing (based upon their aggregate Liquidation
Amount).

         SECTION 607.  RECORD DATE FOR VOTING AND OTHER PURPOSES.

         For the purposes of determining the Securityholders who are entitled
to notice of and to vote at any meeting or by written consent, or to
participate in any Distribution on the Trust Securities in respect of which a
record date is not otherwise provided for in this Trust Agreement, or for the
purpose of any other action, the Administrative Trustees may from time to time
fix a date, not more than 90 days prior to the date of any meeting of
Securityholders or the payment of Distribution or other action, as the case may
be, as a record date for the determination of the identity of the
Securityholders of record for such purposes.

         SECTION 608.  ACTS OF SECURITYHOLDERS.

         Any request, demand, authorization, direction, notice, consent, waiver
or other action provided or permitted by this Trust Agreement to be given, made
or taken by Securityholders or Owners may be embodied in and evidenced by one
or more instruments of substantially similar tenor signed by such
Securityholders or owners in person or by an agent duly appointed in writing;
and, except as otherwise expressly provided herein, such action shall become
effective when such instrument or instruments are delivered to an
Administrative Trustee.  Such instrument or instruments (and the action
embodied therein and evidenced thereby) are herein sometimes referred to as the
"Act" of the Securityholders or Owners signing such instrument or instruments.
Proof of execution of any such instrument or of a writing appointing any such
agent shall be sufficient for any purpose of this Trust Agreement and (subject
to Section 801) conclusive in favor of the Trustees, if made in the manner
provided in this Section.

         The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him the execution thereof.  Where
such execution is by a signer acting in a capacity other than his individual
capacity, such certificate or affidavit shall also constitute sufficient proof
of his authority.  The fact and date of the execution of any such instrument or
writing, or the authority of the Person executing the same, may also be proved
in any other manner which any Trustee receiving the same deems sufficient.

         The ownership of Preferred Securities shall be proved by the
Securities Register.

         Any request, demand, authorization, direction, notice, consent, waiver
or other Act of the Securityholder of any Trust Security shall bind every
future Securityholder of the same Trust Security and the Securityholder of
every Trust Security issued upon the registration of transfer




                                      29
<PAGE>   35

thereof or in exchange therefor or in lieu thereof in respect of anything done,
omitted or suffered to be done by the Trustees or the Trust in reliance
thereon, whether or not notation of such action is made upon such Trust
Security.

         Without limiting the foregoing, a Securityholder entitled hereunder to
take any action hereunder with regard to any particular Trust Security may do
so with regard to all or any part of the Liquidation Amount of such Trust
Security or by one or more duly appointed agents each of which may do so
pursuant to such appointment with regard to all or any part of such liquidation
amount.

         A Securityholder may institute a legal proceeding directly against the
Depositor under the Guarantee to enforce its rights under the Guarantee without
first instituting a legal proceeding against the Guarantee Trustee (as defined
in the Guarantee), the Trust or any Person.

         SECTION 609.  INSPECTION OF RECORDS.

         Upon reasonable notice to the Administrative Trustees and the Property
Trustee, the records of the Trust shall be open to inspection by
Securityholders during normal business hours for any purpose reasonably related
to such Securityholder's interest as a Securityholder.

                                  ARTICLE VII
                         REPRESENTATIONS AND WARRANTIES

         SECTION 701.  REPRESENTATIONS AND WARRANTIES OF THE BANK.

         The Bank, as of the date hereof, and each Successor Property Trustee
at the time of the Successor Property Trustee's acceptance of its appointment
as Property Trustee hereunder (the term "Bank" being used to refer to such
Successor Property Trustee in its separate corporate capacity) hereby
represents and warrants (as applicable) for the benefit of the Depositor and
the Securityholders that:

                 (a)      the Bank is a Massachusetts banking corporation duly
organized, validly existing and in good standing under the laws of the
Commonwealth of Massachusetts;

                 (b)      the Bank has full corporate power, authority and
legal right to execute, deliver and perform its obligations under this Trust
Agreement and has taken all necessary action to authorize the execution,
delivery and performance by it of this Trust Agreement;

                 (c)      this Trust Agreement has been duly authorized,
executed and delivered by the Bank and constitutes the valid and legally
binding agreement of the Bank enforceable against it in accordance with its
terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting
creditors, rights and to general equity principles;




                                      30
<PAGE>   36

                 (d)      the execution, delivery and performance by the Bank
of this Trust Agreement has been duly authorized by all necessary corporate or
other action on the part of the Bank and does not require any approval of
stockholders of the Bank and such execution, delivery and performance will not
(i) violate the Bank's charter or by-laws, (ii) violate any provision of, or
constitute, with or without notice or lapse of time, a default under, or result
in the creation or imposition of, any Lien on any properties included in the
Trust Property pursuant to the provisions of, any indenture, mortgage, credit
agreement, license or other agreement or instrument to which the the Bank is a
party or by which it is bound, or (iii) violate any law, governmental rule or
regulation of the United States or the Commonwealth of Massachusetts, as the
case may be, governing the banking or trust powers of the Bank or any order,
judgment or decree applicable to the Bank;

                 (e)      neither the authorization, execution or delivery by
the Bank of this Trust Agreement nor the consummation of any of the
transactions by the Property Trustee contemplated herein or therein requires
the consent or approval of, the giving of notice to, the registration with or
the taking of any other action with respect to any governmental authority or
agency under any existing federal law governing the banking or trust powers of
the Bank under the laws of the United States or the Commonwealth of
Massachusetts; and

                 (f)      there are no proceedings pending or, to the best of
the Bank's knowledge, threatened against or affecting the Bank in any court or
before any governmental authority, agency or arbitration board or tribunal
which, individually or in the aggregate, would materially and adversely affect
the Trust or would question the right, power and authority of the Bank to enter
into or perform its obligations as one of the Trustees under this Trust
Agreement.

         SECTION 702.  REPRESENTATIONS AND WARRANTIES OF THE DELAWARE BANK.

         The Delaware Bank, as of the date hereof, and each Successor Delaware
Trustee at the time of the Successor Delaware Trustee's acceptance of
appointment as Delaware Trustee hereunder (the term "Delaware Bank" being used
to refer to such Successor Delaware Trustee in its separate corporate capacity)
, hereby represents and warrants (as applicable) for the benefit of the
Depositor and the Securityholders that:

                 (a)      the Delaware Bank is a Delaware banking corporation
duly organized, validly existing and in good standing under the laws of the
State of Delaware;

                 (b)      the Delaware Bank has full corporate power, authority
and legal right to execute, deliver and perform its obligations under this
Trust Agreement and has taken all necessary action to authorize the execution,
delivery and performance by it of this Trust Agreement;

                 (c)      this Trust Agreement has been duly authorized,
executed and delivered by the Delaware Trustee and constitutes the valid and
legally binding agreement of the Delaware Bank enforceable against it in
accordance with its terms, subject to bankruptcy, insolvency, fraudulent
transfer, reorganization, moratorium and similar laws of general applicability
relating to or affecting creditors, rights and to general equity principles;





                                      31
<PAGE>   37

                 (d)      the execution, delivery and performance by the
Delaware Bank of this Trust Agreement has been duly authorized by all necessary
corporate or other action on the part of the Delaware Bank and does not require
any approval of stockholders of the Delaware Bank and such execution, delivery
and performance will not (i) violate the Delaware Bank's charter or by-laws,
(ii) violate any provision of, or constitute, with or without notice or lapse
of time, a default under, or result in the creation or imposition of, any Lien
on any properties included in the Trust Property pursuant to the provisions of,
any indenture, mortgage, credit agreement, license or other agreement or
instrument to which the Delaware Bank is a party or by which it is bound, or
(iii) violate any law, governmental rule or regulation of the United States or
the State of Delaware, as the case may be, governing the banking or trust
powers of the Delaware Bank or any order, judgment or decree applicable to the
Delaware Bank;

                 (e)      neither the authorization, execution or delivery by
the Delaware Bank of this Trust Agreement nor the consummation of any of the
transactions by the Delaware Bank contemplated herein or therein requires the
consent or approval of, the giving of notice to, the registration with or the
taking of any other action with respect to any governmental authority or agency
under any existing federal law governing the banking or trust powers of the
Delaware Bank under the laws of the United States or the State of Delaware; and

                 (f)      there are no proceedings pending or, to the best of
the Delaware Bank's knowledge, threatened against or affecting the Delaware
Bank in any court or before any governmental authority, agency or arbitration
board or tribunal which, individually or in the aggregate, would materially and
adversely affect the Trust or would question the right, power and authority of
the Delaware Trustee to enter into or perform its obligations as one of the
Trustees under this Trust Agreement.

         SECTION 703.  REPRESENTATIONS AND WARRANTIES OF DEPOSITOR.

         The Depositor hereby represents and warrants for the benefit of the
Securityholders that:

                 (a)      the Trust Securities Certificates issued on the
Closing Date or the Option Closing Date, if applicable, on behalf of the Trust
have been duly authorized and will have been, duly and validly executed, issued
and delivered by the Administrative Trustees pursuant to the terms and
provisions of, and in accordance with the requirements of, this Trust Agreement
and the Securityholders will be, as of such date, entitled to the benefits of
this Trust Agreement; and

                 (b)      there are no taxes, fees or other governmental
charges payable by the Trust (or the Trustees on behalf of the Trust) under the
laws of the State of Delaware or any political subdivision thereof in
connection with the execution, delivery and performance by the Bank, the
Property Trustee or the Delaware Trustee, as the case may be, of this Trust
Agreement.

                                  ARTICLE VIII
                                  THE TRUSTEES




                                      32
<PAGE>   38

         SECTION 801.  CERTAIN DUTIES AND RESPONSIBILITIES.

                 (a)      The duties and responsibilities of the Trustees shall
be as provided by this Trust Agreement and, in the case of the Property
Trustee, by the Trust Indenture Act.  Notwithstanding the foregoing, no
provision of this Trust Agreement shall require the Trustees to expend or risk
their own funds or otherwise incur any financial liability in the performance
of any of their duties hereunder, or in the exercise of any of their rights or
powers, if they shall have reasonable grounds for believing that repayment of
such funds or adequate indemnity against such risk or liability is not
reasonably assured to it.  No Administrative Trustee nor the Delaware Trustee
shall be liable for its acts or omissions hereunder except as a result of its
own gross negligence or willful misconduct.  The Property Trustee's liability
shall be determined under the Trust Indenture Act.  Whether or not therein
expressly so provided, every provision of this Trust Agreement relating to the
conduct or affecting the liability of or affording protection to the Trustees
shall be subject to the provisions of this Section.  To the extent that, at law
or in equity, the Delaware Trustee or an Administrative Trustee has duties
(including fiduciary duties) and liabilities relating thereto to the Trust or
to the Securityholders, The Delaware Trustee or such Administrative Trustee
shall not be liable to the Trust or to any Securityholder for such Trustee's
good faith reliance on the provisions of this Trust Agreement.  The provisions
of this Trust Agreement, to the extent that they restrict the duties and
liabilities of the Administrative Trustees otherwise existing at law or in
equity, are agreed by the Depositor and the Securityholders to replace such
other duties and liabilities of the Delaware Trustee or Administrative
Trustees.

                 (b)      All payments made by the Property Trustee or a Paying
Agent in respect of the Trust Securities shall be made only from the revenue
and proceeds from the Trust Property and only to the extent that there shall be
sufficient revenue or proceeds from the Trust Property to enable the Property
Trustee or a Paying Agent to make payments in accordance with the terms hereof.
Each Securityholder, by its acceptance of a Trust Security, agrees that it will
look solely to the revenue and proceeds from the Trust Property to the extent
legally available for distribution to it as herein provided and that the
Trustees are not personally liable to it for any amount distributable in
respect of any Trust Security or for any other liability in respect of any
Trust Security.  This Section 801(b) does not limit the liability of the
Trustees expressly set forth elsewhere in this Trust Agreement or, in the case
of the Property Trustee, in the Trust Indenture Act.

                 (c)      No provision of this Trust Agreement shall be
construed to relieve the Property Trustee from liability for its own negligent
action, its own negligent failure to act, or its own willful misconduct, except
that:

                          (i)     the Property Trustee shall not be liable for
any error of judgment made in good faith by an authorized officer of the
Property Trustee, unless it shall be proved that the Property Trustee was
negligent in ascertaining the pertinent facts;

                          (ii)    the Property Trustee shall not be liable with
respect to any action taken or omitted to be taken by it in good faith in
accordance with the direction of the Holders of not less than a majority in
Liquidation Amount of the Trust Securities relating to the time, method and
place




                                      33
<PAGE>   39

of conducting any proceeding for any remedy available to the Property Trustee,
or exercising any trust or power conferred upon the Property Trustee under this
Trust Agreement;

                          (iii)   the Property Trustee's sole duty with respect
to the custody, safe keeping and physical preservation of the Debentures and
the Payment Account shall be to deal with such Property in a similar manner as
the Property Trustee deals with similar property for its own account, subject
to the protections and limitations on liability afforded to the Property
Trustee under this Trust Agreement and the Trust Indenture Act;

                          (iv)    the Property Trustee shall not be liable for
any interest on any money received by it except as it may otherwise agree with
the Depositor and money held by the Property Trustee need not be segregated
from other funds held by it except in relation to the Payment Account
maintained by the Property Trustee pursuant to Section 301 and except to the
extent otherwise required by law; and

                          (v)     the Property Trustee shall not be responsible
for monitoring the compliance by the Administrative Trustees or the Depositor
with their respective duties under this Trust Agreement, nor shall the Property
Trustee be liable for the negligence, default or misconduct of the
Administrative Trustees or the Depositor.

         SECTION 802.  CERTAIN NOTICES.

                 (a)      Within five Business Days after the occurrence of any
Event of Default actually known to the Property Trustee, the Property Trustee
shall transmit, in the manner and to the extent provided in Section 1008,
notice of such Event of Default to the Securityholders, the Administrative
Trustees and the Depositor, unless such Event of Default shall have been cured
or waived.  For purposes of this Section the term "Event of Default" means any
event that is, or after notice or lapse of time or both would become, an Event
of Default.

                 (b)      The Administrative Trustees shall transmit, to the
Securityholders in the manner and to the extent provided in Section 1008,
notice of the Depositor's election to begin or further extend an Extended
Interest Payment Period on the Debentures (unless such election shall have been
revoked) within the time specified for transmitting such notice to the holders
of the Debentures pursuant to the Indenture as originally executed.

         SECTION 803.  CERTAIN RIGHTS OF PROPERTY TRUSTEE.

         Subject to the provisions of Section 801:

                 (a)      the Property Trustee may rely and shall be protected
in acting or refraining from acting in good faith upon any resolution, Opinion
of Counsel, certificate, written representation of a Holder or transferee,
certificate of auditors or any other certificate, statement, instrument,
opinion, report, notice, request, consent, order, appraisal, bond, debenture,
note, other evidence of




                                      34
<PAGE>   40

indebtedness or other paper or document believed by it to be genuine and to
have been signed or presented by the proper party or parties;

                 (b)      if (i) in performing its duties under this Trust
Agreement the Property Trustee is required to decide between alternative
courses of action or (ii) in construing any of the provisions of this Trust
Agreement the Property Trustee finds the same ambiguous or inconsistent with
other provisions contained herein or (iii) the Property Trustee is unsure of
the application of any provision of this Trust Agreement, then, except as to
any matter as to which the Preferred Securityholders are entitled to vote under
the terms of this Trust Agreement, the Property Trustee shall deliver a notice
to the Depositor requesting written instructions of the Depositor as to the
course of action to be taken and the Property Trustee shall take such action,
or refrain from taking such action, as the Property Trustee shall be instructed
in writing to take, or to refrain from taking, by the Depositor; provided,
however, that if the Property Trustee does not receive such instructions of the
Depositor within ten Business Days after it has delivered such notice, or such
reasonably shorter period of time set forth in such notice (which to the extent
practicable shall not be less than two Business Days), it may, but shall be
under no duty to, take or refrain from taking such action not inconsistent with
this Trust Agreement as it shall deem advisable and in the best interests of
the Securityholders, in which event the Property Trustee shall have no
liability except for its own bad faith, negligence or willful misconduct;

                 (c)      any direction or act of the Depositor or the
Administrative Trustees contemplated by this Trust Agreement shall be
sufficiently evidenced by an Officers' Certificate;

                 (d)      whenever in the administration of this Trust
Agreement, the Property Trustee shall deem it desirable that a matter be
established before undertaking, suffering or omitting any action hereunder, the
Property Trustee (unless other evidence is herein specifically prescribed) may,
in the absence of bad faith on its part, request and conclusively rely upon an
Officer's Certificate which, upon receipt of such request, shall be promptly
delivered by the Depositor or the Administrative Trustees;

                 (e)      the Property Trustee shall have no duty to see to any
recording, filing or registration of any instrument (including any financing or
continuation statement or any filing under tax or securities laws) or any
rerecording, refiling or reregistration thereof;

                 (f)      the Property Trustee may consult with counsel of its
choice (which counsel may be counsel to the Depositor or any of its Affiliates)
and the advice of such counsel shall be full and complete authorization and
protection in respect of any action taken, suffered or omitted by it hereunder
in good faith and in reliance thereon and in accordance with such advice, such
counsel may be counsel to the Depositor or any of its Affiliates, and may
include any of its employees; the Property Trustee shall have the right at any
time to seek instructions concerning the administration of this Trust Agreement
from any court of competent jurisdiction;

                 (g)      the Property Trustee shall be under no obligation to
exercise any of the rights or powers vested in it by this Trust Agreement at
the request or direction of any of the




                                      35
<PAGE>   41

Securityholders pursuant to this Trust Agreement, unless such Securityholders
shall have offered to the Property Trustee reasonable security or indemnity
against the costs, expenses and liabilities which might be incurred by it in
compliance with such request or direction;

                 (h)      the Property Trustee shall not be bound to make any
investigation into the facts or matters stated in any resolution, certificate,
statement, instrument, opinion, report, notice, request, consent, order,
approval, bond, debenture, note or other evidence of indebtedness or other
paper or document, unless requested in writing to do so by one or more
Securityholders, but the Property Trustee may make such further inquiry or
investigation into such facts or matters as it may see fit;

                 (i)      the Property Trustee may execute any of the trusts or
powers hereunder or perform any duties hereunder either directly or by or
through its agents or attorneys, provided that the Property Trustee shall be
responsible for its own negligence or recklessness with respect to selection of
any agent or attorney appointed by it hereunder;

                 (j)      whenever in the administration of this Trust
Agreement the Property Trustee shall deem it desirable to receive instructions
with respect to enforcing any remedy or right or taking any other action
hereunder the Property Trustee (i) may request instructions from the Holders of
the Trust Securities which instructions may only be given by the Holders of the
same proportion in Liquidation Amount of the Trust Securities as would be
entitled to direct the Property Trustee under the terms of the Trust Securities
in respect of such remedy, right or action, (ii) may refrain from enforcing
such remedy or right or taking such other action until such instructions are
received, and (iii) shall be protected in acting in accordance with such
instructions; and

                 (k)      except as otherwise expressly provided by this Trust
Agreement, the Property Trustee shall not be under any obligation to take any
action that is discretionary under the provisions of this Trust Agreement.  No
provision of this Trust Agreement shall be deemed to impose any duty or
obligation on the Property Trustee to perform any act or acts or exercise any
right, power, duty or obligation conferred or imposed on it, in any
jurisdiction in which it shall be illegal, or in which the Property Trustee
shall be unqualified or incompetent in accordance with applicable law, to
perform any such act or acts, or to exercise any such right, power, duty or
obligation.  No permissive power or authority available to the Property Trustee
shall be construed to be a duty.

         SECTION 804.  NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF SECURITIES.

         The recitals contained herein and in the Trust Securities Certificates
shall be taken as the statements of the Trust, and the Trustees do not assume
any responsibility for their correctness.  The Trustees shall not be
accountable for the use or application by the Depositor of the proceeds of the
Debentures.

         SECTION 805.  MAY HOLD SECURITIES.




                                      36
<PAGE>   42

         Any Trustee or any other agent of any Trustee or the Trust, in its
individual or any other capacity, may become the owner or pledgee of Trust
Securities and, subject to Sections 808 and 813 and except as provided in the
definition of the term "Outstanding" in Article I, may otherwise deal with the
Trust with the same rights it would have if it were not a Trustee or such other
agent.

         SECTION 806.  COMPENSATION; INDEMNITY; FEES.

         The Depositor agrees:

                 (a)      to pay to the Trustees from time to time reasonable
compensation for all services rendered by them hereunder (which compensation
shall not be limited by any provision of law in regard to the compensation of a
trustee of an express trust);

                 (b)      except as otherwise expressly provided herein, to
reimburse the Trustees upon request for all reasonable expenses, disbursements
and advances incurred or made by the Trustees in accordance with any provision
of this Trust Agreement (including the reasonable compensation and the expenses
and disbursements of its agents and counsel), except any such expense,
disbursement or advance as may be attributable to such Trustee's negligence,
bad faith or willful misconduct (or, in the case of the Administrative Trustees
or the Delaware Trustee, any such expense, disbursement or advance as may be
attributable to his or her gross negligence, bad faith or willful misconduct);
and

                 (c)      to indemnify each of the Trustees or any predecessor
Trustee for, and to hold the Trustees harmless against, any loss, damage,
claims, liability, penalty or expense incurred without negligence or bad faith
on its part, arising out of or in connection with the acceptance or
administration of this Trust Agreement, including the costs and expenses of
defending itself against any claim or liability in connection with the exercise
or performance of any of its powers or duties hereunder, except as any such
indemnification is attributable to such Trustee's negligence, bad faith or
willful misconduct (or, in the case of the Administrative Trustees or the
Delaware Trustee, any such expense, disbursement or advance as may be
attributable to his or her gross negligence, bad faith or willful misconduct).

         No Trustee may claim any lien or charge on any Trust Property as a
result of any amount due pursuant to this Section 806.

         SECTION 807.  CORPORATE PROPERTY TRUSTEE REQUIRED; ELIGIBILITY OF
TRUSTEES.

                 (a)      There shall at all times be a Property Trustee
hereunder with respect to the Trust Securities.  The Property Trustee shall be
a Person that is eligible pursuant to the Trust Indenture Act to act as such
and has a combined capital and surplus of at least $50,000,000.  If any such
Person publishes reports of condition at least annually, pursuant to law or to
the requirements of its supervising or examining authority, then for the
purposes of this Section, the combined capital and surplus of such Person shall
be deemed to be its combined capital and surplus as set forth in its most
recent report of condition so published.  If at any time the Property Trustee
with respect to the




                                      37
<PAGE>   43

Trust Securities shall cease to be eligible in accordance with the provisions
of this Section, it shall resign immediately in the manner and with the effect
hereinafter specified in this Article.

                 (b)      There shall at all times be one or more
Administrative Trustees hereunder with respect to the Trust Securities.  Each
Administrative Trustee shall be either a natural person who is at least 21
years of age or a legal entity that shall act through one or more persons
authorized to bind that entity.

                 (c)      There shall at all times be a Delaware Trustee with
respect to the Trust Securities.  The Delaware Trustee shall either be (i) a
natural person who is at least 21 years of age and a resident of the State of
Delaware or (ii) a legal entity with its principal place of business in the
State of Delaware and that otherwise meets the requirements of applicable
Delaware law that shall act through one or more persons authorized to bind such
entity.

         SECTION 808.  CONFLICTING INTERESTS.

         If the Property Trustee has or shall acquire a conflicting interest
within the meaning of the Trust Indenture Act, the Property Trustee shall
either eliminate such interest or resign, to the extent and in the manner
provided by, and subject to the provisions of, the Trust Indenture Act and this
Trust Agreement.

         SECTION 809.  CO-TRUSTEES AND SEPARATE TRUSTEE.

         Unless an Event of Default shall have occurred and be continuing, at
any time or times, for the purpose of meeting the legal requirements of the
Trust Indenture Act or of any jurisdiction in which any part of the Trust
Property may at the time be located, the Depositor shall have power to appoint,
and upon the written request of the Property Trustee, the Depositor shall for
such purpose join with the Property Trustee in the execution, delivery and
performance of all instruments and agreements necessary or proper to appoint,
one or more Persons approved by the Property Trustee either to act as
co-trustee, jointly with the Property Trustee, of all or any part of such Trust
Property, or to the extent required by law to act as separate trustee of any
such property, in either case with such powers as may be provided in the
instrument of appointment, and to vest in such Person or Persons in the
capacity aforesaid, any property, title, right or power deemed necessary or
desirable, subject to the other provisions of this Section.  If the Depositor
does not join in such appointment within 15 days after the receipt by it of a
request so to do, or in case a Debenture Event of Default has occurred and is
continuing, the Property Trustee alone shall have power to make such
appointment.  Any co-trustee or separate trustee appointed pursuant to this
Section shall either be (i) a natural person who is at least 21 years of age
and a resident of the United States or (ii) a legal entity with its principal
place of business in the United States that shall act through one or more
persons authorized to bind such entity.

         Should any written instrument from the Depositor be required by any
co-trustee or separate trustee so appointed for more fully confirming to such
co-trustee or separate trustee such property,




                                      38
<PAGE>   44

title, right, or power, any and all such instruments shall, on request, be
executed, acknowledged, and delivered by the Depositor.

         Every co-trustee or separate trustee shall, to the extent permitted by
law, but to such extent only, be appointed subject to the following terms,
namely:

                 (a)      The Trust Securities shall be executed and delivered
and all rights, powers, duties and obligations hereunder in respect of the
custody of securities, cash and other personal property held by, or required to
be deposited or pledged with, the Trustees specified hereunder, shall be
exercised, solely by such Trustees and not by such co-trustee or separate
trustee.

                 (b)      The rights, powers, duties and obligations hereby
conferred or imposed upon the Property Trustee in respect of any property
covered by such appointment shall be conferred or imposed upon and exercised or
performed by the Property Trustee or by the Property Trustee and such
co-trustee or separate trustee jointly, as shall be provided in the instrument
appointing such co-trustee or separate trustee, except to the extent that under
any law of any jurisdiction in which any particular act is to be performed, the
Property Trustee shall be incompetent or unqualified to perform such act, in
which event such rights, powers, duties and obligations shall be exercised and
performed by such co-trustee or separate trustee.

                 (c)      The Property Trustee at any time, by an instrument in
writing executed by it, with the written concurrence of the Depositor, may
accept the resignation of or remove any co-trustee or separate trustee
appointed under this Section, and, in case a Debenture Event of Default has
occurred and is continuing, the Property Trustee shall have the power to accept
the resignation of, or remove, any such co-trustee or separate trustee without
the concurrence of the Depositor.  Upon the written request of the Property
Trustee, the Depositor shall join with the Property Trustee in the execution,
delivery and performance of all instruments and agreements necessary or proper
to effectuate such resignation or removal.  A successor to any co-trustee or
separate trustee so resigned or removed may be appointed in the manner provided
in this Section 809.

                 (d)      No co-trustee or separate trustee hereunder shall be
personally liable by reason of any act or omission of the Property Trustee or
any other trustee hereunder.

                 (e)      The Property Trustee shall not be liable by reason of
any act of a co-trustee or separate trustee.

                 (f)      Any Act of Holders delivered to the Property Trustee
shall be deemed to have been delivered to each such co-trustee and separate
trustee.

         SECTION 810.  RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR.

         No resignation or removal of any Trustee (the "Relevant Trustee") and
no appointment of a successor Trustee pursuant to this Article shall become
effective until the acceptance of




                                      39
<PAGE>   45

appointment by the successor Trustee in accordance with the applicable
requirements of Section 811.

         Subject to the immediately preceding paragraph, the Relevant Trustee
may resign at any time with respect to the Trust Securities by giving written
notice thereof to the Securityholders.  If the instrument of acceptance by the
successor Trustee required by Section 811 shall not have been delivered to the
Relevant Trustee within 30 days after the giving of such notice of resignation,
the Relevant Trustee may petition, at the expense of the Depositor, any court
of competent jurisdiction for the appointment of a successor Relevant Trustee
with respect to the Trust Securities.

         Unless a Debenture Event of Default shall have occurred and be
continuing, any Trustee may be removed at any time by Act of the Common
Securityholder.  If a Debenture Event of Default shall have occurred and be
continuing, the Property Trustee or the Delaware Trustee, or both of them, may
be removed at such time by Act of the Holders of a majority in Liquidation
Amount of the Preferred Securities, delivered to the Relevant Trustee (in its
individual capacity and on behalf of the Trust).  An Administrative Trustee may
be removed by the Common Securityholder at any time.

         If any Trustee shall resign, be removed or become incapable of acting
as Trustee, or if a vacancy shall occur in the office of any Trustee for any
cause, at a time when no Debenture Event of Default shall have occurred and be
continuing, the Common Securityholder, by Act of the Common Securityholder
delivered to the retiring Trustee, shall promptly appoint a successor Trustee
or Trustees with respect to the Trust Securities and the Trust, and the
successor Trustee shall comply with the applicable requirements of Section 811.
If the Property Trustee or the Delaware Trustee shall resign, be removed or
become incapable of continuing to act as the Property Trustee or the Delaware
Trustee, as the case may be, at a time when a Debenture Event of Default shall
have occurred and is continuing, the Preferred Securityholders, by Act of the
Securityholders of a majority in Liquidation Amount of the Preferred Securities
then Outstanding delivered to the retiring Relevant Trustee, shall promptly
appoint a successor Relevant Trustee or Trustees with respect to the Trust
Securities and the Trust, and such successor Trustee shall comply with the
applicable requirements of Section 811.  If an Administrative Trustee shall
resign, be removed or become incapable of acting as Administrative Trustee, at
a time when a Debenture Event of Default shall have occurred and be continuing,
the Common Securityholder, by Act of the Common Securityholder delivered to an
Administrative Trustee, shall promptly appoint a successor Administrative
Trustee or Administrative Trustees with respect to the Trust Securities and the
Trust, and such successor Administrative Trustee or Administrative Trustees
shall comply with the applicable requirements of Section 811.  If no successor
Relevant Trustee with respect to the Trust Securities shall have been so
appointed by the Common Securityholder or the Preferred Securityholders and
accepted appointment in the manner required by Section 811, any Securityholder
who has been a Securityholder of Trust Securities on behalf of himself and all
others similarly situated may petition a court of competent jurisdiction for
the appointment Trustee with respect to the Trust Securities.




                                      40
<PAGE>   46

         The Property Trustee shall give notice of each resignation and each
removal of a Trustee and each appointment of a successor Trustee to all
Securityholders in the manner provided in Section 1008 and shall give notice to
the Depositor.  Each notice shall include the name of the successor Relevant
Trustee and the address of its Corporate Trust office if it is the Property
Trustee.

         Notwithstanding the foregoing or any other provision of this Trust
Agreement, in the event any Administrative Trustee or a Delaware Trustee who is
a natural person dies or becomes, in the opinion of the Depositor, incompetent
or incapacitated, the vacancy created by such death, incompetence or incapacity
may be filled by (a) the unanimous act of remaining Administrative Trustees if
there are at least two of them or (b) otherwise by the Depositor (with the
successor in each case being a Person who satisfies the eligibility requirement
for Administrative Trustees set forth in Section 807).




                                      41
<PAGE>   47

         SECTION 811.  ACCEPTANCE OF APPOINTMENT BY SUCCESSOR.

         In case of the appointment hereunder of a successor Relevant Trustee
with respect to the Trust Securities and the Trust, the retiring Relevant
Trustee and each successor Relevant Trustee with respect to the Trust
Securities shall execute and deliver an instrument wherein each successor
Relevant Trustee shall accept such appointment and which shall contain such
provisions as shall be necessary or desirable to transfer and confirm to, and
to vest in, each successor Relevant Trustee all the rights, powers, trusts and
duties of the retiring Relevant Trustee with respect to the Trust Securities
and the Trust and upon the execution and delivery of such instrument the
resignation or removal of the retiring Relevant Trustee shall become effective
to the extent provided therein and each such successor Relevant Trustee,
without any further act, deed or conveyance, shall become vested with all the
rights, powers, trusts and duties of the retiring Relevant Trustee with respect
to the Trust Securities and the Trust; but, on request of the Trust or any
successor Relevant Trustee such retiring Relevant Trustee shall duly assign,
transfer and deliver to such successor Relevant Trustee all Trust Property, all
proceeds thereof and money held by such retiring Relevant Trustee hereunder
with respect to the Trust Securities and the Trust.

         Upon request of any such successor Relevant Trustee, the Trust shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Relevant Trustee all such rights, powers and
trusts referred to in the immediately preceding paragraph, as the case may be.

         No successor Relevant Trustee shall accept its appointment unless at
the time of such acceptance such successor Relevant Trustee shall be qualified
and eligible under this Article.

         SECTION 812.  MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO
BUSINESS.

         Any Person into which the Property Trustee, the Delaware Trustee or
any Administrative Trustee may be merged or converted or with which it may be
consolidated, or any Person resulting from any merger, conversion or
consolidation to which such Relevant Trustee shall be a party, or any
corporation succeeding to all or substantially all the corporate trust business
of such Relevant Trustee, shall be the successor of such Relevant Trustee
hereunder, provided such Person shall be otherwise qualified and eligible under
this Article, without the execution or filing of any paper or any further act
on the part of any of the parties hereto.

         SECTION 813.  PREFERENTIAL COLLECTION OF CLAIMS AGAINST DEPOSITOR OR
TRUST.

         If and when the Property Trustee or the Delaware Trustee shall be or
become a creditor of the Depositor or the Trust (or any other obligor upon the
Debentures or the Trust Securities) , the Property Trustee or the Delaware
Trustee, as the case may be, shall be subject to and shall take all actions
necessary in order to comply with the provisions of the Trust Indenture Act
regarding the collection of claims against the Depositor or Trust (or any such
other obligor).

         SECTION 814.  REPORTS BY PROPERTY TRUSTEE.




                                      42
<PAGE>   48

                 (a)      Not later than July 15 of each year commencing with
July 15, 1997, the Property Trustee shall transmit to all Securityholders in
accordance with Section 1008, and to the Depositor, a brief report dated as of
such May 15 with respect to:

                          (i)     its eligibility under Section 807 or, in lieu
thereof, if to the best of its knowledge it has continued to be eligible under
said Section, a written statement to such effect; and

                          (ii)    any change in the property and funds in its
possession as Property Trustee since the date of its last report and any action
taken by the Property Trustee in the performance of its duties hereunder which
it has not previously reported and which in its opinion materially affects the
Trust Securities.

                 (b)      In addition the Property Trustee shall transmit to
Securityholders such reports concerning the Property Trustee and its actions
under this Trust Agreement as may be required pursuant to the Trust Indenture
Act at the times and in the manner provided pursuant thereto.

                 (c)      A copy of each such report shall, at the time of such
transmission to Holders, be filed by the Property Trustee with the Nasdaq
National Market or other organization upon which the Trust Securities are
listed, with the Commission and with the Depositor.

         SECTION 815.  REPORTS TO THE PROPERTY TRUSTEE.

         The Depositor and the Administrative Trustees on behalf of the Trust
shall provide to the Property Trustee such documents, reports and information
as required by Section 314 of the Trust Indenture Act (if any) and the
compliance certificate required by Section 314(a) of the Trust Indenture Act in
the form, in the manner and at the times required by Section 314 of the Trust
Indenture Act.

         SECTION 816.  EVIDENCE OF COMPLIANCE WITH CONDITIONS PRECEDENT.

         Each of the Depositor and the Administrative Trustees on behalf of the
Trust shall provide to the Property Trustee such evidence of compliance with
any conditions precedent, if any, provided for in this Trust Agreement that
relate to any of the matters set forth in Section 314(c) of the Trust Indenture
Act.  Any certificate or opinion required to be given by an officer pursuant to
Section 314(c)(1) of the Trust Indenture Act shall be given in the form of an
Officers' Certificate.

         SECTION 817.  NUMBER OF TRUSTEES.

                 (a)      The number of Trustees shall be five, provided that
the Holder of all of the Common Securities by written instrument may increase
or decrease the number of Administrative Trustees.  The Property Trustee and
the Delaware Trustee may be the same Person.

                 (b)      If a Trustee ceases to hold office for any reason and
the number of Administrative Trustees is not reduced pursuant to Section
817(a), or if the number of Trustees is




                                      43
<PAGE>   49

increased pursuant to Section 817(a), a vacancy shall occur.  The vacancy shall
be filled with a Trustee appointed in accordance with Section 810.

                 (c)      The death, resignation, retirement, removal,
bankruptcy, incompetence or incapacity to perform the duties of a Trustee shall
not operate to annul the Trust.  Whenever a vacancy in the number of
Administrative Trustees shall occur, until such vacancy is filled by the
appointment of an Administrative Trustee in accordance with Section 810, the
Administrative Trustees in office, regardless of their number (and
notwithstanding any other provision of this Agreement), shall have all the
powers granted to the Administrative Trustees and shall discharge all the
duties imposed upon the Administrative Trustees by this Trust Agreement.

         SECTION 818.  DELEGATION OF POWER.

                 (a)      Any Administrative Trustee may, by power of attorney
consistent with applicable law, delegate to any other natural person over the
age of 21 his or her power for the purpose of executing any documents
contemplated in Section 207(a); and

                 (b)      The Administrative Trustees shall have power to
delegate from time to time to such of their number or to the Depositor the
doing of such things and the execution of such instruments either in the name
of the Trust or the names of the Administrative Trustees or otherwise as the
Administrative Trustees may deem expedient, to the extent such delegation is
not prohibited by applicable law or contrary to the provisions of the Trust, as
set forth herein.

         SECTION 819.  VOTING.

         Except as otherwise provided in this Trust Agreement, the consent or
approval of the Administrative Trustees shall require consent or approval by
not less than a majority of the Administrative Trustees unless there are only
two, in which case both must consent.

                                   ARTICLE IX
                      TERMINATION, LIQUIDATION AND MERGER

         SECTION 901.  TERMINATION UPON EXPIRATION DATE.

         Unless earlier dissolved, the Trust shall automatically dissolve on
December 31, 2046 (the "Expiration Date") subject to distribution of the Trust
Property in accordance with Section 904.

         SECTION 902.  EARLY TERMINATION.

         The first to occur of any of the following events is an "Early
Termination Event":

                 (a)     the occurrence of a Bankruptcy Event in respect of, 
or the dissolution or liquidation of, the Depositor;




                                      44
<PAGE>   50

                 (b)      delivery of written direction to the Property Trustee
by the Depositor at any time (which direction is optional and wholly within the
discretion of the Depositor) to dissolve the Trust and distribute the
Debentures to Securityholders in exchange for the Preferred Securities in
accordance with Section 904;

                 (c)      the redemption of all of the Preferred Securities in
connection with the redemption of all of the Debentures; and

                 (d)      an order for dissolution of the Trust shall have been
entered by a court of competent jurisdiction.

         SECTION 903.  TERMINATION.

         The respective obligations and responsibilities of the Trustees and
the Trust created and continued hereby shall terminate upon the latest to occur
of the following: (a) the distribution by the Property Trustee to
Securityholders upon the liquidation of the Trust pursuant to Section 904, or
upon the redemption of all of the Trust Securities pursuant to Section 402, of
all amounts required to be distributed hereunder upon the final payment of the
Trust Securities; (b) the payment of any expenses owed by the Trust; (c) the
discharge of all administrative duties of the Administrative Trustees,
including the performance of any tax reporting obligations with respect to the
Trust or the Securityholders, and (d) the filing of a certificate of
cancellation by the Administrative Trustee under the Business Trust Act.

         SECTION 904.  LIQUIDATION.

                 (a)      If an Early Termination Event specified in clause
(a), (b), or (d) of Section 902 occurs or upon the Expiration Date, the Trust
shall be liquidated by the Trustees as expeditiously as the Trustees determine
to be possible by distributing, after satisfaction of liabilities to creditors
of the Trust as provided by applicable law, to each Securityholder a Like
Amount of Debentures, subject to Section 904(d).  Notice of liquidation shall
be given by the Property Trustee by first-class mail, postage prepaid, mailed
not later than 30 nor more than 60 days prior to the Liquidation Date to each
Holder of Trust Securities at such Holder's address appearing in the Securities
Register.  All notices of liquidation shall:

                          (i)     state the Liquidation Date;

                          (ii)    state that from and after the Liquidation
Date, the Trust Securities will no longer be deemed to be Outstanding and any
Trust Securities Certificates not surrendered for exchange will be deemed to
represent a Like Amount of Debentures; and

                          (iii)   provide such information with respect to the
mechanics by which Holders may exchange Trust Securities certificates for
Debentures, or if Section 904(d) applies receive a Liquidation Distribution, as
the Administrative Trustees or the Property Trustee shall deem appropriate.




                                      45
<PAGE>   51

                 (b)      Except where Section 902(c) or 904(d) applies, in
order to effect the liquidation of the Trust and distribution of the Debentures
to Securityholders, the Property Trustee shall establish a record date for such
distribution (which shall be not more than 45 days prior to the Liquidation
Date) and, either itself acting as exchange agent or through the appointment of
a separate exchange agent, shall establish such procedures as it shall deem
appropriate to effect the distribution of Debentures in exchange for the
Outstanding Trust Securities Certificates.

                 (c)      Except where Section 902(c) or 904(d) applies, after
the Liquidation Date, (i) the Trust Securities will no longer be deemed to be
outstanding, (ii) certificates (or, at the election of the Depositor a Global
Debenture, subject to the provisions of the Indenture) representing a Like
Amount of Debentures will be issued to holders of Trust Securities Certificates
upon surrender of such certificates to the Administrative Trustees or their
agent for exchange, (iii) the Depositor shall use its reasonable efforts to
have the Debentures listed on the Nasdaq National Market or on such other
securities exchange or other organization as the Preferred Securities are then
listed or traded, (iv) any Trust Securities Certificates not so surrendered for
exchange will be deemed to represent a Like Amount of Debentures, accruing
interest at the rate provided for in the Debentures from the last Distribution
Date on which a Distribution was made on such Trust Securities Certificates
until such certificates are so surrendered (and until such certificates are so
surrendered, no payments of interest or principal will be made to holders of
Trust Securities Certificates with respect to such Debentures) and (v) all
rights of Securityholders holding Trust Securities will cease, except the right
of such Securityholders to receive Debentures upon surrender of Trust
Securities Certificates.

                 (d)      In the event that, notwithstanding the other
provisions of this Section 904, whether because of an order for dissolution
entered by a court of competent jurisdiction or otherwise, distribution of the
Debentures in the manner provided herein is determined by the Property Trustee
not to be practical, the Trust Property shall be liquidated, and the Trust
shall be dissolved, wound-up or terminated, by the Property Trustee in such
manner as the Property Trustee determines.  In such event, on the date of the
dissolution, winding- up or other termination of the Trust, Securityholders
will be entitled to receive out of the assets of the Trust available for
distribution to Securityholders, after satisfaction of liabilities to creditors
of the Trust as provided by applicable law, an amount equal to the Liquidation
Amount per Trust Security plus accumulated and unpaid Distributions thereon to
the date of payment (such amount being the "Liquidation Distribution").  If,
upon any such dissolution, winding-up or termination, the Liquidation
Distribution can be paid only in part because the Trust has insufficient assets
available to pay in full the aggregate Liquidation Distribution, then, subject
to the next succeeding sentence, the amounts payable by the Trust on the Trust
Securities shall be paid on a pro rata basis (based upon Liquidation Amounts).
The holder of the Common Securities will be entitled to receive Liquidation
Distributions upon any such dissolution, winding-up or termination pro rata
(determined as aforesaid) with Holders of Preferred securities, except that, if
a Debenture Event of Default has occurred and is continuing, the Preferred
Securities shall have a priority over the Common Securities.

         SECTION 905.  MERGERS, CONSOLIDATIONS, AMALGAMATIONS OR REPLACEMENTS
OF THE TRUST.




                                      46
<PAGE>   52

         The Trust may not merge with or into, consolidate, amalgamate, or be
replaced by, or convey, transfer or lease its properties and assets
substantially as an entirety to any corporation or other Person, except
pursuant to this Section 905.  At the request of the Depositor, with the
consent of the Administrative Trustees and without the consent of the holders
of the Preferred Securities, the Property Trustee or the Delaware Trustee, the
Trust may merge with or into, consolidate, amalgamate, be replaced by or
convey, transfer or lease its properties and assets substantially as an
entirety to a trust organized as such under the laws of any state; provided,
that (i) such successor entity either (a) expressly assumes all of the
obligations of the Trust with respect to the Preferred Securities or (b)
substitutes for the Preferred Securities other securities having substantially
the same terms as the Preferred Securities (the "Successor Securities") so long
as the Successor Securities rank the same as the Preferred Securities rank in
priority with respect to distributions and payments upon liquidation,
redemption and otherwise, (ii) the Depositor expressly appoints a trustee of
such successor entity possessing substantially the same powers and duties as
the Property Trustee as the holder of the Debentures, (iii) the Successor
Securities are listed or traded, or any Successor Securities will be listed or
traded upon notification of issuance, on the Nasdaq National Market or any
national securities exchange or other organization on which the Preferred
Securities are then listed, if any, (iv) such merger, consolidation,
amalgamation, replacement, conveyance, transfer or lease does not adversely
affect the rights, preferences and privileges of the holders of the Preferred
Securities (including any Successor Securities) in any material respect, (v)
such successor entity has a purpose identical to that of IBC Capital, (vi)
prior to such merger, consolidation, amalgamation, replacement, conveyance,
transfer or lease, the Depositor has received an Opinion of Counsel to the
effect that (a) such merger, consolidation, amalgamation, replacement,
conveyance, transfer or lease does not adversely affect the rights, preferences
and privileges of the holders of the Preferred Securities (including any
Successor Securities) in any material respect, and (b) following such merger,
consolidation, amalgamation, replacement, conveyance, transfer or lease,
neither the Trust nor such successor entity will be required to register as an
investment company under the 1940 Act and (vii) the Depositor owns all of the
Common Securities of such successor entity and guarantees the obligations of
such successor entity under the Successor Securities at least to the extent
provided by the Guarantee.  Notwithstanding the foregoing, the Trust shall not,
except with the consent of holders of 100% in Liquidation Amount of the
Preferred Securities, consolidate, amalgamate, merge with or into, or be
replaced by or convey, transfer or lease its properties and assets
substantially as an entirety to any other Person or permit any other Person to
consolidate, amalgamate, merge with or into, or replace it if such
consolidation, amalgamation, merger or replacement would cause the Trust or the
successor entity to be classified as other than a grantor trust for United
States federal income tax purposes.



                                      47

<PAGE>   53

                                   ARTICLE X
                            MISCELLANEOUS PROVISIONS

         SECTION 1001.  LIMITATION OF RIGHTS OF SECURITYHOLDERS.

         The death or incapacity of any Person having an interest, beneficial
or otherwise, in Trust Securities shall not operate to terminate this Trust
Agreement, nor entitle the legal representatives or heirs of such Person or any
Securityholder for such Person, to claim an accounting, take any action or
bring any proceeding in any court for a partition or winding-up of the
arrangements contemplated hereby, nor otherwise affect the rights, obligations
and liabilities of the parties hereto or any of them.

         SECTION 1002.  AMENDMENT.

                 (a)      This Trust Agreement may be amended from time to time
by the Trustees and the Depositor, without the consent of any Securityholders,
(i) as provided in Section 811 with respect to acceptance of appointment by a
successor Trustee, (ii) to cure any ambiguity, correct or supplement any
provision herein or therein which may be inconsistent with any other provision
herein or therein, or to make any other provisions with respect to matters or
questions arising under this Trust Agreement, that shall not be inconsistent
with the other provisions of this Trust Agreement, or (iii) to modify,
eliminate or add to any provisions of this Trust Agreement to such extent as
shall be necessary to ensure that the Trust will be classified for United
States federal income tax purposes as a grantor trust at all times that any
Trust Securities are outstanding or to ensure that the Trust will not be
required to register as an "investment company" under the 1940 Act; provided,
however, that in the case of clause (ii), such action shall not adversely
affect in any material respect the interests of any Securityholder, and any
amendments of this Trust Agreement shall become effective when notice thereof
is given to the Securityholders.

                 (b)      Except as provided in Section 601(c) or Section
1002(c) hereof, any provision of this Trust Agreement may be amended by the
Trustees and the Depositor (i) with the consent of Trust Securityholders
representing not less than a majority (based upon Liquidation Amounts) of the
Trust Securities then Outstanding and (ii) upon receipt by the Trustees of an
Opinion of Counsel to the effect that such amendment or the exercise of any
power granted to the Trustees in accordance with such amendment will not affect
the Trust's status as a grantor trust for United States federal income tax
purposes or the Trust's exemption from status as an "investment company" under
the 1940 Act.

                 (c)      In addition to and notwithstanding any other
provision in this Trust Agreement, without the consent of each affected
Securityholder (such consent being obtained in accordance with Section 603 or
606 hereof), this Trust Agreement may not be amended to (i) change the amount
or timing of any Distribution on the Trust Securities or otherwise adversely
affect the amount of any Distribution required to be made in respect of the
Trust Securities as of a specified date or (ii) restrict the right of a
Securityholder to institute suit for the enforcement of any such payment on or
after such date; notwithstanding any other provision herein, without the
unanimous




                                      48
<PAGE>   54

consent of the Securityholders (such consent being obtained in accordance with
Section 603 or 606 hereof), this paragraph (c) of this Section 1002 may not be
amended.

                 (d)      Notwithstanding any other provisions of this Trust
Agreement, no Administrative Trustee shall enter into or consent to any
amendment to this Trust Agreement which would cause the Trust to fail or cease
to qualify for the exemption from status of an "investment company" under the
1940 Act or to fail or cease to be classified as a grantor trust for United
States federal income tax purposes.

                 (e)      Notwithstanding anything in this Trust Agreement to
the contrary, without the consent of the Depositor, this Trust Agreement may
not be amended in a manner which imposes any additional obligation on the
Depositor.

                 (f)      In the event that any amendment to this Trust
Agreement is made, the Administrative Trustees shall promptly provide to the
Depositor a copy of such amendment.

                 (g)      Neither the Property Trustee nor the Delaware Trustee
shall be required to enter into any amendment to this Trust Agreement which
affects its own rights, duties or immunities under this Trust Agreement.  The
Property Trustee shall be entitled to receive an Opinion of Counsel and an
Officers' Certificate stating that any amendment to this Trust Agreement is in
compliance with this Trust Agreement.

         SECTION 1003.  SEPARABILITY.

         In case any provision in this Trust Agreement or in the Trust
Securities Certificates shall be invalid, illegal or unenforceable, the
validity, legality and enforceability of the remaining provisions shall not in
any way be affected or impaired thereby.

         SECTION 1004.  GOVERNING LAW.

         THIS TRUST AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF EACH OF THE
SECURITYHOLDERS, THE TRUST AND THE TRUSTEES WITH RESPECT TO THIS TRUST
AGREEMENT AND THE TRUST SECURITIES SHALL BE CONSTRUED IN ACCORDANCE WITH AND
GOVERNED BY THE LAWS OF THE STATE OF DELAWARE (WITHOUT REGARD TO CONFLICT OF
LAWS PRINCIPLES).

         SECTION 1005.  PAYMENTS DUE ON NON-BUSINESS DAY.

         If the date fixed for any payment on any Trust Security shall be a day
that is not a Business Day, then such payment need not be made on such date but
may be made on the next succeeding day which is a Business Day, with the same
force and effect as though made on the date fixed for such payment, and no
distribution shall accumulate thereon for the period after such date.

         SECTION 1006.  SUCCESSORS.




                                      49
<PAGE>   55

         This Trust Agreement shall be binding upon and shall inure to the
benefit of any successor to the Depositor, the Trust or the Relevant
Trustee(s), including any successor by operation of law.  Except in connection
with a consolidation, merger or sale involving the Depositor that is permitted
under Article XII of the Indenture and pursuant to which the assignee agrees in
writing to perform the Depositor's obligations hereunder, the Depositor shall
not assign its obligations hereunder.

         SECTION 1007.  HEADINGS.

         The Article and Section headings are for convenience only and shall
not affect the construction of this Trust Agreement.

         SECTION 1008.  REPORTS, NOTICES AND DEMANDS.

         Any report, notice, demand or other communication which by any
provision of this Trust Agreement is required or permitted to be given or
served to or upon any Securityholder or the Depositor may be given or served in
writing by deposit thereof, first-class postage prepaid, in the United States
mail, hand delivery or facsimile transmission, in each case, addressed, (a) in
the case of a Preferred Securityholder, to such Preferred Securityholder as
such Securityholder's name and address may appear on the Securities Register;
and (b) in the case of the Common Securityholder or the Depositor, to
Independent Bank Corporation, 230 West Main Street, Ionia, Michigan 48846,
Attention: Treasurer, facsimile no.: (616) 527-5634.  Any notice to Preferred
Securityholders shall also be given to such owners as have, within two years
preceding the giving of such notice, filed their names and addresses with the
Property Trustee for that purpose.  Such notice, demand or other communication
to or upon a Securityholder shall be deemed to have been sufficiently given or
made, for all purposes, upon hand delivery, mailing or transmission.

         Any notice, demand or other communication which by any provision of
this Trust Agreement is required or permitted to be given or served to or upon
the Trust, the Property Trustee or the Administrative Trustees shall be given
in writing addressed (until another address is published by the Trust) as
follows: (a) with respect to the Property Trustee to State Street Bank and
Trust Company, Attention: Corporate Trust Administration; (b) with respect to
the Delaware Trustee, to Wilmington Trust Company, Rodney Square North, 1100
North Market Street, Wilmington, Delaware 19890-0001, Attention: Corporate
Trust Trustee Administration; and (c) with respect to the Administrative
Trustees, to them at the address above for notices to the Depositor, marked
"Attention: Administrative Trustees of IBC Capital." Such notice, demand or
other communication to or upon the Trust or the Property Trustee shall be
deemed to have been sufficiently given or made only upon actual receipt of the
writing by the Trust or the Property Trustee.




                                      50
<PAGE>   56

         SECTION 1009.  AGREEMENT NOT TO PETITION.

         Each of the Trustees and the Depositor agree for the benefit of the
Securityholders that, until at least one year and one day after the Trust has
been terminated in accordance with Article IX, they shall not file, or join in
the filing of, a petition against the Trust under any bankruptcy, insolvency,
reorganization or other similar law (including, without limitation, the United
States Bankruptcy Code) (collectively, "Bankruptcy Laws") or otherwise join in
the commencement of any proceeding against the Trust under any Bankruptcy Law.
In the event the Depositor takes action in violation of this Section 1009, the
Property Trustee agrees, for the benefit of Securityholders, that at the
expense of the Depositor (which expense shall be paid prior to the filing), it
shall file an answer with the bankruptcy court or otherwise properly contest
the filing of such petition by the Depositor against the Trust or the
commencement of such action and raise the defense that the Depositor has agreed
in writing not to take such action and should be stopped and precluded
therefrom.  The provisions of this Section 1009 shall survive the termination
of this Trust Agreement.

         SECTION 1010.  TRUST INDENTURE ACT; CONFLICT WITH TRUST INDENTURE ACT.

                 (a)      This Trust Agreement is subject to the provisions of
the Trust Indenture Act that are required to be part of this Trust Agreement
and shall, to the extent applicable, be governed by such provisions.

                 (b)      The Property Trustee shall be the only Trustee which
is a trustee for the purposes of the Trust Indenture Act.

                 (c)      If any provision hereof limits, qualifies or
conflicts with another provision hereof which is required to be included in
this Trust Agreement by any of the provisions of the Trust Indenture Act, such
required provision shall control.  If any provision of this Trust Agreement
modifies or excludes any provision of the Trust Indenture Act which may be so
modified or excluded, the latter provision shall be deemed to apply to this
Trust Agreement as so modified or to be excluded, as the case may be.

                 (d)      The application of the Trust Indenture Act to this
Trust Agreement shall not affect the nature of the Securities as equity
securities representing undivided beneficial interests in the assets of the
Trust.

         SECTION 1011.  ACCEPTANCE OF TERMS OF TRUST AGREEMENT, GUARANTEE AND
INDENTURE.

         THE RECEIPT AND ACCEPTANCE OF A TRUST SECURITY OR ANY INTEREST THEREIN
BY OR ON BEHALF OF A SECURITYHOLDER OR ANY BENEFICIAL OWNER, WITHOUT ANY
SIGNATURE OR FURTHER MANIFESTATION OF ASSENT, SHALL CONSTITUTE THE
UNCONDITIONAL ACCEPTANCE BY THE SECURITYHOLDER AND ALL OTHERS HAVING A
BENEFICIAL INTEREST IN SUCH TRUST SECURITY OF ALL THE TERMS AND PROVISIONS OF
THIS TRUST AGREEMENT AND AGREEMENT TO THE SUBORDINATION PROVISIONS AND OTHER
TERMS OF THE GUARANTEE AND THE




                                      51
<PAGE>   57

INDENTURE, AND SHALL CONSTITUTE THE AGREEMENT OF THE TRUST, SUCH SECURITYHOLDER
AND SUCH OTHERS THAT THE TERMS AND PROVISIONS OF THIS TRUST AGREEMENT SHALL BE
BINDING, OPERATIVE AND EFFECTIVE AS BETWEEN THE TRUST AND SUCH SECURITYHOLDER
AND SUCH OTHERS.




                                      52
<PAGE>   58

                                    INDEPENDENT BANK CORPORATION


                                    By: /s/ William R. Kohls 
                                        --------------------------------------
                                            Name:   William R. Kohls
                                            Title:  Executive Vice President and
                                                    Chief Financial Officer


                                     STATE STREET BANK AND TRUST
                                     COMPANY
                                     as Property Trustee


                                     By: /s/ Paul D. Allen    
                                         --------------------------------------
                                            Name:   Paul D. Allen
                                            Title:  Vice President


                                     WILMINGTON TRUST COMPANY
                                     as Delaware Trustee


                                     By: /s/ Norma Closs 
                                         -------------------------------------- 
                                            Name:   Norma Closs
                                            Title:  Vice President


                                        /s/ Charles C. Van Loan 
                                        ---------------------------------------
                                        Charles C. Van Loan
                                        As Administrative Trustee


                                        /s/ William R. Kohls
                                        --------------------------------------- 
                                        William R. Kohls
                                        As Administrative Trustee


                                        /s/ James J. Twarozynski
                                        --------------------------------------
                                        James J. Twarozynski
                                        As Administrative Trustee


                                      53


<PAGE>   59

                                   EXHIBIT A

                              CERTIFICATE OF TRUST
                                       OF
                              IBC CAPITAL FINANCE

         This Certificate of Trust of IBC CAPITAL FINANCE (the "Trust"), dated
November 7, 1996, is being duly executed and filed by Wilmington Trust Company,
a Delaware banking corporation, Charles C. Van Loan, William R. Kohls, and
James J. Twarozynski, each an individual, as trustees, to form a business trust
under the Delaware Business Trust Act (12 Del. C. Section  3801 et seq.).

1.               NAME.  The name of the business trust formed hereby is IBC
                 Capital Finance.

2.               DELAWARE TRUSTEE.  The name and business address of the
                 trustee of the Trust in the State of Delaware is Wilmington
                 Trust Company, Rodney Square North, 1100 North Market Street,
                 Wilmington, Delaware 19890-0001, Attn:  Corporate Trust
                 Administration.

3.               EFFECTIVE DATE.  This Certificate of Trust shall be effective
                 on November 7, 1996.

         IN WITNESS WHEREOF, the undersigned, being the sole trustees of the
Trust, has executed this Certificate of Trust as of the date first above
written.

                                               WILMINGTON TRUST COMPANY,
                                               as trustee

                                               By: /s/ Norma Closs 
                                                  -----------------------------
                                                  Name:  Norma Closs
                                                  Title: Vice President


                                                 /s/ Charles C. Van Loan
                                               ---------------------------------
                                               CHARLES C. VAN LOAN, as Trustee


                                                 /s/ William R. Kohls
                                               ---------------------------------
                                               WILLIAM R. KOHLS, as Trustee


                                                 /s/ James J. Twarozynski
                                               ---------------------------------
                                               JAMES J. TWAROZYNSKI, as Trustee





                                      A-1
<PAGE>   60

                                   EXHIBIT B

                               December 17, 1996



The Depository Trust Company,
55 Water Street, 49th Floor,
New York, New York 10041-0099.

Attention: _________________________________
              General Counsel's Office

Re:      IBC Capital Finance
         Cumulative Trust Preferred Securities

Ladies and Gentlemen:

         The purpose of this letter is to set forth certain matters relating to
the issuance and deposit with The Depository Trust Company ("DEPOSITORY TRUST
COMPANY") of IBC Capital Finance Cumulative Trust Preferred Securities (the
"Preferred Securities"), of IBC Capital Finance, a Delaware business trust (the
"Issuer"),created pursuant to a Trust Agreement between Independent Bank
Corporation, a Michigan corporation ("IBC"), State Street Bank and Trust
Company, as Property Trustee, Wilmington Trust Company, as Delaware Trustee and
the Administrative Trustees named therein.  The payment of distributions on the
Preferred Securities and payments due upon liquidation of Issuer or redemption
of the Preferred Securities, to the extent the Issuer has funds available for
the payment thereof, are guaranteed by IBC to the extent set forth in a
Guarantee Agreement, dated December 17, 1996, by IBC with respect to the
Preferred Securities.  IBC and the Issuer propose to sell the Preferred
Securities to Stifel, Nicolaus & Company, Incorporated (the "Underwriter")
pursuant to an Underwriting Agreement, dated December 13, 1996, by and among
the Underwriters, the Issuer and IBC, and the Underwriters wish to take
delivery of the Preferred Securities through DEPOSITORY TRUST COMPANY.  State
Street Bank and Trust Company is acting as transfer agent and registrar with
respect to the Preferred Securities (the "Transfer Agent and Registrar").

         To induce DEPOSITORY TRUST COMPANY to accept the Preferred Securities
as eligible for deposit at DEPOSITORY TRUST COMPANY, and to act in accordance
with DEPOSITORY TRUST COMPANY's rules with respect to the Preferred Securities,
the Issuer, the Transfer Agent and Registrar and DEPOSITORY TRUST COMPANY agree
among each other as follows:

         1.      Prior to the closing of the sale of the Preferred Securities
to the Underwriters, which is expected to occur on or about December 18, 1996,
there shall be deposited with DEPOSITORY TRUST COMPANY one or more global
certificates (individually and collectively, the "Global Certificate")
registered in the name of DEPOSITORY TRUST COMPANY's Preferred Securities





                                      B-1
<PAGE>   61

nominee, Cede & Co., representing an aggregate of 690,000 Preferred Securities
(Liquidation Amount $25 per Preferred Security) and bearing the following
legend:

                 Unless this certificate is presented by an authorized
                 representative of The Depository Trust Company, a New York
                 corporation ("DEPOSITORY TRUST COMPANY"), to Issuer or its
                 agent for registration of transfer, exchange, or payment, and
                 any certificate issued is registered in the name of Cede & Co.
                 or in such other name as is requested by an authorized
                 representative of DEPOSITORY TRUST COMPANY (and any payment is
                 made to Cede & Co. or to such other entity as is requested by
                 an authorized representative of DEPOSITORY TRUST COMPANY), ANY
                 TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE
                 BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered
                 owner hereof, Cede & Co., has an interest herein.

         2.      The Amended and Restated Trust Agreement of the Issuer
provides for the voting by holders of the Preferred Securities under certain
limited circumstances.  The Issuer shall establish a record date for such
purposes and shall, to the extent possible, give DEPOSITORY TRUST COMPANY
notice of such record date not less than 15 calendar days in advance of such
record date.

         3.      In the event of a stock split, conversion, recapitalization,
reorganization or any other similar transaction resulting in the cancellation
of all or any part of the Preferred Securities outstanding, the Issuer or the
Transfer Agent and Registrar shall send DEPOSITORY TRUST COMPANY a notice of
such event at least 5 business days prior to the effective date of such event.

         4.      In the event of distribution on, or an offering or issuance of
rights with respect to, the Preferred Securities outstanding, the Issuer or the
Transfer Agent and Registrar shall send DEPOSITORY TRUST COMPANY a notice
specifying: (a) the amount of and conditions, if any, applicable to the payment
of any such distribution or any such offering or issuance of rights; (b) any
applicable expiration or deadline date, or any date by which any action on the
part of the holders of Preferred Securities is required; and (c) the date any
required notice is to be mailed by or on behalf of the Issuer to holders of
Preferred Securities or published by or on behalf of the Issuer (whether by
mail or publication, the "Publication Date").  Such notice shall be sent to
DEPOSITORY TRUST COMPANY by a secure means (e.g., legible telecopy, registered
or certified mail, overnight delivery) in a timely manner designed to assure
that such notice is in DEPOSITORY TRUST COMPANY's possession no later than the
close of business on the business day before the Publication Date.  The Issuer
or the Transfer Agent and Registrar will forward such notice either in a
separate secure transmission for each CUSIP number or in a secure transmission
of multiple CUSIP numbers (if applicable) that includes a manifest or list of
each CUSIP number submitted in that transmission. (The party sending such
notice shall have a method to verify subsequently the use of such means and the
timeliness of such notice.) The Publication Date shall be not less than 30
calendar days nor more than 60 calendar days prior to the payment of any such
distribution or any such offering or issuance of rights with respect to the
Preferred Securities.  After establishing the





                                      B-2
<PAGE>   62

amount of payment to be made on the Preferred Securities, the Issuer or the
Transfer Agent and Registrar will notify DEPOSITORY TRUST COMPANY's Dividend
Department of such payment 5 business days prior to payment date.  Notices to
DEPOSITORY TRUST COMPANY's Dividend Department by telecopy shall be sent to
(212) 709-1723.  Such notices by mail or by any other means shall be sent to:

                          Manager, Announcements
                          Dividend Department
                          The Depository Trust Company
                          7 Hanover Square, 23rd Floor
                          New York, New York 10004-2695

         The Issuer or the Transfer Agent and Registrar shall confirm
DEPOSITORY TRUST COMPANY's receipt of such telecopy by telephoning the Dividend
Department at (212) 709-1270.

         5.      In the event of a redemption by the Issuer of the Preferred
Securities, notice specifying the terms of the redemption and the Publication
Date of such notice shall be sent by the Issuer or the Transfer Agent and
Registrar to DEPOSITORY TRUST COMPANY not less than 30 calendar days prior to
such event by a secure means in the manner set forth in paragraph 4. Such
redemption notice shall be sent to DEPOSITORY TRUST COMPANY's Call Notification
Department at (516) 227-4164 or (516) 227-4190, and receipt of such notice
shall be confirmed by telephoning (516) 227-4070.  Notice by mail or by any
other means shall be sent to:

                          Call Notification Department
                          The Depository Trust Company
                          711 Stewart Avenue
                          Garden City, New York 11530-4719

         6. In the event of any invitation to tender the Preferred Securities,
notice specifying the terms of the tender and the Publication Date of such
notice shall be sent by the Issuer or the Transfer Agent and Registrar to
DEPOSITORY TRUST COMPANY by a secure means and in a timely manner as described
in paragraph 4. Notices to DEPOSITORY TRUST COMPANY pursuant to this paragraph
and notices of other corporate actions (including mandatory tenders, exchanges
and capital changes), shall be sent, unless notification to another department
is expressly provided for herein, by telecopy to DEPOSITORY TRUST COMPANY's
Reorganization Department at (212)709-1093 or (212) 709-1094 and receipt of
such notice shall be confirmed by telephoning (212)709-6884, or by mail or any
other means to:

                          Manager, Reorganization Department
                          Reorganization window
                          The Depository Trust Company
                          7 Hanover Square, 23rd Floor
                          New York, New York 10004-2695





                                      B-3
<PAGE>   63

         7.      All notices and payment advices sent to DEPOSITORY TRUST
COMPANY shall contain the CUSIP number or numbers of the Preferred Securities
and the accompanying designation of the Preferred Securities, which, as of the
date of this letter, is "IBC Capital Finance Cumulative Trust Preferred
Securities."

         8.      Distribution payments or other cash payments with respect to
the Preferred Securities evidenced by the Global Certificate shall be received
by Cede & Co., as nominee of DEPOSITORY TRUST COMPANY, or its registered
assigns in next day funds on each payment date (or in accordance with existing
arrangements between the Issuer or the Transfer Agent and Registrar and
DEPOSITORY TRUST COMPANY).  Such payments shall be made payable to the order of
Cede & Co., and shall be addressed as follows:

                          NDFS Redemption Department
                          The Depository Trust Company
                          7 Hanover Square, 23rd Floor
                          New York, New York 10004-2695

         9.      DEPOSITORY TRUST COMPANY may by prior written notice direct
the Issuer and the Transfer Agent and Registrar to use any other telecopy
number or address of DEPOSITORY TRUST COMPANY as the number or address to which
notices or payments may be sent.

         10.     In the event of a conversion, redemption, or any other similar
transaction (e.g., tender made and accepted in response to the Issuer's or the
Transfer Agent and Registrar's invitation) necessitating a reduction in the
aggregate number of Preferred Securities outstanding evidenced by the Global
Certificate, DEPOSITORY TRUST COMPANY, in its discretion: (a) may request the
Issuer or the Transfer Agent and Registrar to issue and countersign a new
Global Certificate; or (b) may make an appropriate notation on the Global
Certificate indicating the date and amount of such reduction.

         11.     DEPOSITORY TRUST COMPANY may discontinue its services as a
securities depositary with respect to the Preferred Securities at any time by
giving at least 90 days' prior written notice to the Issuer and the Transfer
Agent and Registrar (at which time DEPOSITORY TRUST COMPANY will confirm with
the Issuer or the Transfer Agent and Registrar the aggregate number of
Preferred Securities deposited with it) and discharging its responsibilities
with respect thereto under applicable law.  Under such circumstances, the
Issuer may determine to make alternative arrangements for book-entry settlement
for the Preferred Securities, make available one or more separate global
certificates evidencing Preferred Securities to any Participant having
Preferred Securities credited to its DEPOSITORY TRUST COMPANY account, or issue
definitive Preferred Securities to the beneficial holders thereof, and in any
such case, DEPOSITORY TRUST COMPANY agrees to cooperate fully with the Issuer
and the Transfer Agent and Registrar and to return the Global Certificate, duly
endorsed for transfer as directed by the Issuer or the Transfer Agent and
Registrar, together with any other documents of transfer reasonably requested
by the Issuer or the Transfer Agent and Registrar.





                                      B-4
<PAGE>   64

         12.     In the event that the Issuer determines that beneficial owners
of Preferred Securities shall be able to obtain definitive Preferred
Securities, the Issuer or the Transfer Agent and Registrar shall notify
DEPOSITORY TRUST COMPANY of the availability of certificates.  In such event,
the Issuer or the Transfer Agent and Registrar shall issue, transfer and
exchange certificates in appropriate amounts, as required by DEPOSITORY TRUST
COMPANY and others, and DEPOSITORY TRUST COMPANY agrees to cooperate fully with
the Issuer and the Transfer Agent and Registrar and to return the Global
Certificate, duly endorsed for transfer as directed by the Issuer or the
Transfer Agent and Registrar, together with any other documents of transfer
reasonably requested by the Issuer or the Transfer Agent and Registrar.

         13.     This letter may be executed in any number of counterparts,
each of which when so executed shall be deemed to be an original, but all such
counterparts shall together constitute but one and the same instrument.

         Nothing herein shall be deemed to require the Transfer Agent and
Registrar to advance funds on behalf of IBC Capital Finance.

                                               Very truly yours,

                                               IBC CAPITAL FINANCE
                                               (As Issuer)

                                               By:_____________________________
                                                  Name:   William R. Kohls
                                                  Title:  Administrative Trustee


                                                STATE STREET BANK AND TRUST
                                                COMPANY
                                                as Property Trustee
                                                and as Transfer Agent and
                                                Registrar 


                                                By:_____________________________
                                                      Name:   Paul D. Allen
                                                      Title:  Vice President


RECEIVED AND ACCEPTED:

THE DEPOSITORY TRUST COMPANY





                                      B-5
<PAGE>   65

                                   EXHIBIT C

                      THIS CERTIFICATE IS NOT TRANSFERABLE

Certificate Number ________                         Number of Common Securities


                    Certificate Evidencing Common Securities
                                       of
                              IBC Capital Finance

                              % Common Securities
                  (liquidation amount $25 per Common Security)


         IBC CAPITAL FINANCE, a statutory business trust created under the laws
of the State of Delaware (the "Trust"), hereby certifies that INDEPENDENT BANK
CORPORATION (the "Holder") is the registered owner of
_________________________________________________________________________
___________________ (__________________) common securities of the Trust
representing undivided beneficial interests in the assets of the Trust and
designated the ____________% Common Securities (liquidation amount $25 per
Common Security) (the "Common Securities").  In accordance with Section 510 of
the Trust Agreement (as defined below), the Common Securities are not
transferable and any attempted transfer hereof shall be void.  The
designations, rights, privileges, restrictions, preferences, and other terms
and provisions of the Common Securities are set forth in, and this certificate
and the Common Securities represented hereby are issued and shall in all
respects be subject to the terms and provisions of, the Amended and Restated
Trust Agreement of the Trust, dated as of December 17, 1996, as the same may be
amended from time to time (the "Trust Agreement"), including the designation of
the terms of the Common Securities as set forth therein.  The Trust will
furnish a copy of the Trust Agreement to the Holder without charge upon written
request to the Trust at its principal place of business or registered office.

         Upon receive of this certificate, the Holder is bound by the Trust
Agreement and is entitled to the benefits thereunder.

         IN WITNESS WHEREOF, one of the Administrative Trustees of the Trust
has executed this certificate this 18th day of December, 1996.


                                                   IBC CAPITAL FINANCE


                                        By:_____________________________________
                                           Name:   William R. Kohls 
                                           Title:  Administrative Trustee





                                      C-1
<PAGE>   66

                                   EXHIBIT D

                    AGREEMENT AS TO EXPENSES AND LIABILITIES


         AGREEMENT dated as of December 17, 1996, between Independent Bank
Corporation, a Michigan corporation ("IBC"), and IBC Capital Finance, a
Delaware business trust (the "Trust").

         WHEREAS, the Trust intends to issue its common securities (the "Common
Securities") to, and receive Debentures from, IBC and to issue and sell 9.25%
Cumulative Trust Preferred Securities (the "Preferred Securities") with such
powers, preferences and special rights and restrictions as are set forth in the
Amended and Restated Trust Agreement of the Trust dated as of December 17,
1996, as the same may be amended from time to time (the "Trust Agreement");

         WHEREAS, IBC will directly or indirectly own all of the Common
Securities of the Trust and will issue the Debentures;

         NOW, THEREFORE, in consideration of the purchase by each holder of the
Preferred Securities, which purchase IBC hereby agrees shall benefit IBC and
which purchase IBC acknowledges will be made in reliance upon the execution and
delivery of this Agreement, IBC, including in its capacity as holder of the
Common Securities, and the Trust hereby agree as follows:

                                   ARTICLE I

         SECTION 1.1. GUARANTEE BY IBC.

         Subject to the terms and conditions hereof, IBC, including in its
capacity as holder of the Common Securities, hereby irrevocably and
unconditionally guarantees to each person or entity to whom the Trust is now or
hereafter becomes indebted or liable (the "Beneficiaries") the full payment
when and as due, of any and all Obligations (as hereinafter defined) to such
Beneficiaries.  As used herein, "Obligations" means any costs, expenses or
liabilities of the Trust other than obligations of the Trust to pay to holders
of any Preferred Securities or other similar interests in the Trust the amounts
due such holders pursuant to the terms of the Preferred Securities or such
other similar interests, as the case may be.  This Agreement is intended to be
for the benefit of, and to be enforceable by, all such Beneficiaries, whether
or not such Beneficiaries have received notice hereof.

         SECTION 1.2. TERM OF AGREEMENT.

         This Agreement shall terminate and be of no further force and effect
upon the later of (a) the date on which full payment has been made of all
amounts payable to all holders of all the Preferred Securities (whether upon
redemption, liquidation, exchange or otherwise) and (b) the date on which there
are no Beneficiaries remaining; provided, however, that this Agreement shall
continue to be effective or shall be reinstated, as the case may be, if at any
time any holder of Preferred Securities





                                      D-1
<PAGE>   67

or any Beneficiary must restore payment of any sums paid under the Preferred
Securities, under any obligation, under the Guarantee Agreement dated the date
hereof by IBC and State Street Bank & Trust Company as guarantee trustee or
under this Agreement for any reason whatsoever.  This Agreement is continuing,
irrevocable, unconditional and absolute.

         SECTION 1.3.     WAIVER OF NOTICE.

         IBC hereby waives notice of acceptance of this Agreement and of any
obligation to which it applies or may apply, and IBC hereby waives presentment,
demand for payment, protest, notice of nonpayment, notice of dishonor, notice
of redemption and all other notices and demands.

         SECTION 1.4.     NO IMPAIRMENT.

         The obligations, covenants, agreements and duties of IBC under this
Agreement shall in no way be affected or impaired by reason of the happening
from time to time of any of the following:

         (a)     the extension of time for the payment by the Trust of all or
any portion of the obligations or for the performance of any other obligation
under, arising out of, or in connection with, the obligations;

         (b)     any failure, omission, delay or lack of diligence on the part
of the Beneficiaries to enforce, assert or exercise any right, privilege, power
or remedy conferred on the Beneficiaries with respect to the obligations or any
action on the part of the Trust granting indulgence or extension of any kind;
or

         (c)     the voluntary or involuntary liquidation, dissolution, sale of
any collateral, receivership, insolvency, bankruptcy, assignment for the
benefit of creditors, reorganization, arrangement composition or readjustment
of debt of, or other similar proceedings affecting, the Trust or any of the
assets of the Trust.

There shall be no obligation of the Beneficiaries to give notice to, or obtain
the consent of, IBC with respect to the happening of any of the foregoing.

         SECTION 1.5.     ENFORCEMENT.

         A Beneficiary may enforce this Agreement directly against IBC, and IBC
waives any right or remedy to require that any action be brought against the
Trust or any other person or entity before proceeding against IBC.





                                      D-2
<PAGE>   68

                                   ARTICLE II

         SECTION 2.1.     BINDING EFFECT.

         All guarantees and agreements contained in this Agreement shall bind
the successors, assigns, receivers, trustees and representatives of IBC and
shall inure to the benefit of the Beneficiaries.

         SECTION 2.2.     AMENDMENT.

         So long as there remains any Beneficiary or any Preferred Securities
of any series are outstanding, this Agreement shall not be modified or amended
in any manner adverse to such Beneficiary or to the holders of the Preferred
Securities.

         SECTION 2.3.     NOTICES.

         Any notice, request or other communication required or permitted to be
given hereunder shall be given in writing by delivering the same by facsimile
transmission (confirmed by mail), telex, or by registered or certified mail,
addressed as follows (and if so given, shall be deemed given when mailed or
upon receipt of an answer back, if sent by telex):

         IBC Capital
         c/o State Street Bank and Trust Company
         Two International Place, 4th Floor
         Boston, MA 02110
         Facsimile No.: 617-664-5365
         Attention: Corporate Trust Department

         Independent Bank Corporation
         230 West Main Street
         Ionia, MI 48846
         Facsimile No.: 616-527-5836
         Attention:       Chief Financial Officer

         Section 2.4.     This agreement shall be governed by and construed and
interpreted in accordance with the laws of the State of Michigan (without
regard to conflict of laws principles).




                     [SIGNATURES ARE ON THE FOLLOWING PAGE]





                                      D-3
<PAGE>   69


         THIS AGREEMENT is executed as of the day and year first above written.


                                            INDEPENDENT BANK CORPORATION


                                            By:     ___________________________
                                            Name:   William R. Kohls
                                            Title:  Executive Vice President and
                                                    Chief Financial Officer

                                            IBC CAPITAL FINANCE


                                            By:      __________________________
                                                     Name:   William R. Kohls
                                                     Title:  Administrative 
                                                             Trustee





                                      D-4
<PAGE>   70

                                   EXHIBIT E

         This Preferred Security is a Global Certificate within the meaning of
the Trust Agreement hereinafter referred to and is registered in the name of
The Depository Trust Company, a New York Corporation ("DEPOSITORY TRUST
COMPANY") or a nominee of the DEPOSITORY TRUST COMPANY.  This Preferred
Security is exchangeable for Preferred Securities registered in the name of a
person other than the DEPOSITORY TRUST COMPANY or its nominee only in the
limited circumstances described in the Trust Agreement (as defined below) and
no transfer of this Preferred Security (other than a transfer of this Preferred
Security as a whole by the DEPOSITORY TRUST COMPANY to a nominee of the
DEPOSITORY TRUST COMPANY or by a nominee of the DEPOSITORY TRUST COMPANY to the
DEPOSITORY TRUST COMPANY or another nominee of the DEPOSITORY TRUST COMPANY)
may be registered except in limited circumstances.

         Unless this Preferred Security is presented by an authorized
representative of the DEPOSITORY TRUST COMPANY to IBC Capital Finance or its
agent for registration of transfer, exchange or payment, and any certificate
issued is registered in the name of Cede & Co., or such other name as is
requested by an authorized representative of DEPOSITORY TRUST COMPANY (and any
payment hereon is made to Cede & Co. or to such other entity as is requested by
an authorized representative of DEPOSITORY TRUST COMPANY, ANY TRANSFER, PLEDGE,
OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL
inasmuch as the registered owner hereof, Cede & Co., has an interest herein.


Certificate Number                                Number of Preferred Securities
        P-

                                                           CUSIP NO. 453-838-500

          Certificate Evidencing Cumulative Trust Preferred Securities
                                       of
                              IBC Capital Finance

                    % Cumulative Trust Preferred Securities
                (liquidation amount $25 per Preferred Security)


         IBC CAPITAL FINANCE, a statutory business trust created under the laws
of the State of Delaware (the "Trust"), hereby certifies that CEDE & CO. (the
"Holder") is the registered owner of
________________________________________________________________________________
 (__________________) preferred securities of the Trust representing undivided
beneficial interests in the assets of the Trust and designated the
____________% Cumulative Trust Preferred Securities (liquidation amount $25 per
Preferred Security) (the "Preferred Securities").  The Preferred Securities are
transferable on the books and records of the Trust, in person or by a duly
authorized attorney, upon surrender of this certificate duly endorsed and in
proper form for transfer as provided in Section 504 of the Trust Agreement (as
defined below). The designations, rights, privileges, restrictions,
preferences, and other terms and provisions of the Preferred Securities are set
forth in, and this certificate and the Preferred Securities





                                      E-1
<PAGE>   71

represented hereby are issued and shall in all respects be subject to the terms
and provisions of, the Amended and Restated Trust Agreement of the Trust dated
as of December 17, 1996, as the same may be amended from time to time (the
"Trust Agreement"), including the designation of the terms of Preferred
Securities as set forth therein.  The Holder is entitled to the benefits of the
Preferred Securities Guarantee Agreement entered into by Independent Bank
Corporation, a Michigan corporation, and State Street Bank & Trust Company, as
guarantee trustee, dated as of December 17, 1996 (the "Guarantee"), to the
extent provided therein.  The Trust will furnish a copy of the Trust Agreement
and the Guarantee to the Holder without charge upon written request to the
Trust at its principal place of business or registered office.

         Upon receipt of this certificate, the Holder is bound by the Trust
Agreement and is entitled to the benefits thereunder.

         IN WITNESS WHEREOF, one of the Administrative Trustees of the Trust
has executed this certificate this 18th day of December, 1996.


                                             IBC CAPITAL FINANCE


                                             By   
                                                 ------------------------------
                                                 Name:   William R. Kohls
                                                 Title:  Administrative Trustee





                                      E-2

<PAGE>   1
                                                                    EXHIBIT 4.6 


     This Preferred Security is a Global Certificate within the meaning of the
Trust Agreement hereinafter referred to and is registered in the name of The
Depository Trust Company, a New York Corporation ("DEPOSITORY TRUST COMPANY")
or a nominee of DEPOSITORY TRUST COMPANY.  This Preferred Security is
exchangeable for Preferred Securities registered in the name of a person other
than DEPOSITORY TRUST COMPANY or its nominee only in the limited circumstances
described in the Trust Agreement (as defined below) and no transfer of this
Preferred Security (other than a transfer of this Preferred Security as a whole
by DEPOSITORY TRUST COMPANY to a nominee of DEPOSITORY TRUST COMPANY or by a
nominee of the DEPOSITORY TRUST COMPANY to DEPOSITORY TRUST COMPANY or another
nominee of DEPOSITORY TRUST COMPANY) may be registered except in limited
circumstances.

     Unless this Preferred Security is presented by an authorized
representative of  DEPOSITORY TRUST COMPANY to IBC Capital Finance or its agent
for registration of transfer, exchange or payment, and any certificate issued
is registered in the name of Cede & Co., or such other name as is requested by
an authorized representative of DEPOSITORY TRUST COMPANY (and any payment
hereon is made to Cede & Co. or to such other entity as is requested by an
authorized representative of DEPOSITORY TRUST COMPANY, ANY TRANSFER, PLEDGE, OR
OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL
inasmuch as the registered owner hereof, Cede & Co., has an interest herein.


Certificate Number                               Number of Preferred Securities
     P-1                                                      690,000

                                                      CUSIP NO. 453-838-500


          Certificate Evidencing Cumulative Trust Preferred Securities
                                       of
                              IBC Capital Finance

                  9.25% Cumulative Trust Preferred Securities
                (liquidation amount $25 per Preferred Security)


     IBC CAPITAL FINANCE, a statutory business trust created under the laws of
the State of Delaware (the "Trust"), hereby certifies that CEDE & CO. (the
"Holder") is the registered owner of Six Hundred Ninety Thousand (690,000)
preferred securities of the Trust representing undivided beneficial interests
in the assets of the Trust and designated the 9.25% Cumulative Trust Preferred
Securities (liquidation amount $25 per Preferred Security) (the "Preferred
Securities").  The Preferred Securities are transferable on the books and
records of the Trust, in person or by a duly authorized attorney, upon
surrender of this certificate duly endorsed and in proper form for transfer as
provided in Section 504 of the Trust Agreement (as defined below).  The
designations, rights, privileges, restrictions, preferences, and other terms
and provisions of the Preferred Securities are set forth in, and this
certificate and the Preferred Securities represented hereby are issued and
shall in all respects be subject to the terms and provisions of, the Amended
and Restated Trust Agreement of the Trust dated as of December 17, 1996, as the
same may be amended from time to time (the

<PAGE>   2


"Trust Agreement"), including the designation of the terms of Preferred
Securities as set forth therein.  The Holder is entitled to the benefits of the
Preferred Securities Guarantee Agreement entered into by Independent Bank
Corporation, a Michigan corporation, and State Street Bank & Trust Company, as
guarantee trustee, dated as of December 17, 1996 (the "Guarantee"), to the
extent provided therein.  The Trust will furnish a copy of the Trust Agreement
and the Guarantee to the Holder without charge upon written request to the
Trust at its principal place of business or registered office.

     Upon receipt of this certificate, the Holder is bound by the Trust
Agreement and is entitled to the benefits thereunder.

     IN WITNESS WHEREOF, one of the Administrative Trustees of the Trust has
executed this certificate this 18th day of December, 1996.


                                        IBC CAPITAL FINANCE


                                        By  /s/ William R. Kohls
                                            -------------------------------
                                            Name:   William R. Kohls
                                            Title:  Administrative Trustee




                                      2

<PAGE>   1
                                                                    EXHIBIT 4.7
================================================================================





                    PREFERRED SECURITIES GUARANTEE AGREEMENT





                          INDEPENDENT BANK CORPORATION


                                      AND


                      STATE STREET BANK AND TRUST COMPANY





                         DATED AS OF DECEMBER 17, 1996





================================================================================
<PAGE>   2

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                        Page No.
                                                                                        --------
<S>                                                                                           <C>
ARTICLE I - DEFINITIONS AND INTERPRETATION  . . . . . . . . . . . . . . . . . . . . . . . . .  1
                                                                                        
         SECTION 1.1      Definitions and Interpretation  . . . . . . . . . . . . . . . . . .  1
                                                                                        
ARTICLE II - TRUST INDENTURE ACT  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
                                                                                        
         SECTION 2.1      Trust Indenture Act; Application  . . . . . . . . . . . . . . . . .  4
         SECTION 2.2      Lists of Holders of Securities  . . . . . . . . . . . . . . . . . .  4
         SECTION 2.3      Reports by the Preferred Guarantee Trustee  . . . . . . . . . . . .  4
         SECTION 2.4      Periodic Reports to Preferred Guarantee Trustee . . . . . . . . . .  5
         SECTION 2.5      Evidence of Compliance with Conditions Precedent  . . . . . . . . .  5
         SECTION 2.6      Events of Default; Waiver . . . . . . . . . . . . . . . . . . . . .  5
         SECTION 2.7      Event of Default; Notice  . . . . . . . . . . . . . . . . . . . . .  5
         SECTION 2.8      Conflicting Interests . . . . . . . . . . . . . . . . . . . . . . .  6
                                                                                        
ARTICLE III - POWERS, DUTIES AND RIGHTS OFPREFERRED GUARANTEE TRUSTEE . . . . . . . . . . . .  6
                                                                                        
         SECTION 3.1      Powers and Duties of the Preferred Guarantee Trustee  . . . . . . .  6
         SECTION 3.2      Certain Rights of Preferred Guarantee Trustee . . . . . . . . . . .  7
         SECTION 3.3      Not Responsible for Recitals or Issuance of Guarantee . . . . . . .  9
                                                                                        
ARTICLE IV - PREFERRED GUARANTEE TRUSTEE  . . . . . . . . . . . . . . . . . . . . . . . . . .  9
                                                                                        
         SECTION 4.1      Preferred Guarantee Trustee; Eligibility  . . . . . . . . . . . . .  9
         SECTION 4.2      Appointment, Removal and Resignation of                       
                          Preferred Guarantee Trustees  . . . . . . . . . . . . . . . . . . . 10
                                                                                        
ARTICLE V - GUARANTEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
                                                                                        
         SECTION 5.1      Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
         SECTION 5.2      Waiver of Notice and Demand . . . . . . . . . . . . . . . . . . . . 11
         SECTION 5.3      Obligations Not Affected  . . . . . . . . . . . . . . . . . . . . . 11
         SECTION 5.4      Rights of Holders . . . . . . . . . . . . . . . . . . . . . . . . . 12
         SECTION 5.5      Guarantee of Payment  . . . . . . . . . . . . . . . . . . . . . . . 12
         SECTION 5.6      Subrogation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
         SECTION 5.7      Independent Obligations . . . . . . . . . . . . . . . . . . . . . . 13
</TABLE>





                                       i
<PAGE>   3


<TABLE>
<S>                                                                                           <C>
ARTICLE VI - LIMITATION OF TRANSACTIONS; SUBORDINATION  . . . . . . . . . . . . . . . . . . . 13
                                                                                        
         SECTION 6.1      Limitation of Transactions  . . . . . . . . . . . . . . . . . . . . 13
         SECTION 6.2      Ranking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
                                                                                        
ARTICLE VII - TERMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
                                                                                        
         SECTION 7.1      Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
                                                                                        
ARTICLE VIII - INDEMNIFICATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
                                                                                        
         SECTION 8.1      Exculpation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
         SECTION 8.2      Indemnification . . . . . . . . . . . . . . . . . . . . . . . . . . 14
                                                                                        
ARTICLE IX - MISCELLANEOUS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
                                                                                        
         SECTION 9.1      Successors and Assigns  . . . . . . . . . . . . . . . . . . . . . . 15
         SECTION 9.2      Amendments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
         SECTION 9.3      Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
         SECTION 9.4      Benefit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
         SECTION 9.5      Governing Law . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
</TABLE>





                                       ii
<PAGE>   4

                             CROSS REFERENCE TABLE

<TABLE>
<CAPTION>
Section of Trust                                                     Section of
Indenture Act of                                                     Guarantee
1939, as Amended                                                     Agreement
- ----------------                                                     ---------
<S>                                                                 <C>
310(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     4.1(a)
310(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     4.1(c), 2.8
310(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     Inapplicable
311(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.2(b)
311(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.2(b)
311(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     Inapplicable
312(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.2(a)
312(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.2(b)
313 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.3
314(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.4
314(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     Inapplicable
314(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.5
314(d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     Inapplicable
314(e)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     1.1, 2.5, 3.2
314(f)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.1, 3.2
315(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     3.1(d)
315(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.7
315(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     3.1
315(d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     3.1(d)
316(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     1.1, 3.6, 5.4
316(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     5.3
316(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     8.2
317(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     Inapplicable
317(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     Inapplicable
318(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.1(b)
318(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.1
318(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2.1(a)
</TABLE>

Note: This reconciliation and tie shall not, for any purpose, be deemed to be a
part of this Agreement.



                                      iii
<PAGE>   5

                    PREFERRED SECURITIES GUARANTEE AGREEMENT

         This PREFERRED SECURITIES GUARANTEE AGREEMENT (the "Preferred
Securities Guarantee"), dated as of December 17, 1996, is executed and
delivered by Independent Bank Corporation, a Michigan corporation (the
"Guarantor"), and State Street Bank and Trust Company, as trustee (the
"Preferred Guarantee Trustee"), for the benefit of the Holders (as defined
herein) from time to time of the Preferred Securities (as defined herein) of
IBC Capital Finance, a Delaware statutory business trust ("IBC Capital").

        WHEREAS, pursuant to an Amended and Restated Trust Agreement (the
"Trust Agreement"), dated as of December 17, 1996, among the trustees of IBC
Capital named therein, the Guarantor, as sponsor, and the holders from time to
time of undivided beneficial interests in the assets of IBC Capital, IBC
Capital is issuing on the date hereof 690,000 preferred securities, having an
aggregate liquidation amount of $17,250,000, designated the 9.25% Cumulative
Trust Preferred Securities (the "Preferred Securities");

        WHEREAS, as incentive for the Holders to purchase the Preferred
Securities, the Guarantor desires irrevocably and unconditionally to agree, to
the extent set forth in this Preferred Securities Guarantee, to pay to the
Holders of the Preferred Securities the Guarantee Payments (as defined herein)
and to make certain other payments on the terms and conditions set forth
herein.

        NOW, THEREFORE, in consideration of the purchase by each Holder of
Preferred Securities, which purchase the Guarantor hereby agrees shall benefit
the Guarantor, the Guarantor executes and delivers this Preferred Securities
Guarantee for the benefit of the Holders.

                                   ARTICLE I
                         DEFINITIONS AND INTERPRETATION

SECTION 1.1      Definitions and Interpretation

         In this Preferred Securities Guarantee, unless the context otherwise
requires:

         (a)     Capitalized terms used in this Preferred Securities Guarantee
but not defined in the preamble above have the respective meanings assigned to
them in this Section 1.1;

         (b)     a term defined anywhere in this Preferred Securities Guarantee
has the same meaning throughout;

         (c)     all references to "the Preferred Securities Guarantee" or
"this Preferred Securities Guarantee" are to this Preferred Securities
Guarantee as modified, supplemented or amended from time to time;

         (d)     all references in this Preferred Securities Guarantee to
Articles and Sections are to Articles and Sections of this Preferred Securities
Guarantee, unless otherwise specified;
<PAGE>   6

          (e)    a term defined in the Trust Indenture Act has the same meaning
when used in this Preferred Securities Guarantee, unless otherwise defined in
this Preferred Securities Guarantee or unless the context otherwise requires;
and

         (f)      a reference to the singular includes the plural and vice
versa.

         "Affiliate" has the same meaning as given to that term in Rule 405 of
the Securities Act of 1933, as amended, or any successor rule thereunder.

         "Business Day" means any day other than (a) a Saturday or Sunday, (b)
a day on which banking institutions in The City of New York are authorized or
required by law or executive order to remain closed, or (c) a day on which
Property Trustee's Corporate Trust Office or the Corporate Trust Office of the
Debenture Trustee is closed for business.

         "Corporate Trust Office" means the office of the Preferred Guarantee
Trustee at which the corporate trust business of the Preferred Guarantee
Trustee shall, at any particular time, be principally administered, which
office at the date of execution of this Agreement is located at [address].

         "Covered Person" means any Holder or beneficial owner of  Preferred
Securities.

         "Debentures" means the series of convertible junior subordinated debt
securities of the Guarantor designated the 9.25% Cumulative Subordinated
Debentures due 2026 held by the Property Trustee (as defined in the Trust
Agreement) of IBC Capital.

         "Event of Default" means a default by the Guarantor on any of its
payment or other obligations under this Preferred Securities Guarantee.

         "Guarantee Payments" means the following payments or distributions,
without duplication, with respect to the Preferred Securities, to the extent
not paid or made by IBC Capital:  (i) any accrued and unpaid Distributions (as
defined in the Trust Agreement) that are required to be paid on such Preferred
Securities to the extent IBC Capital shall have funds available therefor, (ii)
the redemption price, including all accrued and unpaid Distributions to the
date of redemption (the "Redemption Price") to the extent IBC Capital has funds
available therefor, with respect to any Preferred Securities called for
redemption by IBC Capital, and (iii) upon a voluntary or involuntary
dissolution, winding-up or termination of IBC Capital (other than in connection
with the distribution of Debentures to the Holders in exchange for Preferred
Securities as provided in the Trust Agreement), the lesser of (a) the aggregate
of the liquidation amount and all accrued and unpaid Distributions on the
Preferred Securities to the date of payment, to the extent IBC Capital shall
have funds available therefor, and (b) the amount of assets of IBC Capital
remaining available for distribution to Holders in liquidation of IBC Capital
(in either case, the "Liquidation Distribution").

         "Holder" shall mean any holder, as registered on the books and records
of IBC Capital of any Preferred Securities; provided, however, that, in
determining whether the holders of the requisite





                                       2
<PAGE>   7

percentage of Preferred Securities have given any request, notice, consent or
waiver hereunder, "Holder" shall not include the Guarantor or any Affiliate of
the Guarantor.

         "Indemnified Person" means the Preferred Guarantee Trustee, any
Affiliate of the Preferred Guarantee Trustee, or any officers, directors,
shareholders, members, partners, employees, representatives, nominees,
custodians or agents of the Preferred Guarantee Trustee.


         "Indenture" means the Indenture dated as of December 17, 1996, among
the Guarantor (the "Debenture Issuer") and State Street Bank and Trust Company,
as trustee, and any indenture supplemental thereto pursuant to which certain
subordinated debt securities of the Debenture Issuer are to be issued to the
Property Trustee of IBC Capital.

         "Majority in liquidation amount of the Preferred Securities" means,
except as provided by the Trust Indenture Act, a vote by Holder(s) of Preferred
Securities, voting separately as a class, of more than 50% of the liquidation
amount (including the stated amount that would be paid on redemption,
liquidation or otherwise, plus accrued and unpaid Distributions to the date
upon which the voting percentages are determined) of all Preferred Securities.

         "Officers' Certificate" means, with respect to any Person, a
certificate signed by two Authorized Officers of such Person.  Any Officers'
Certificate delivered with respect to compliance with a condition or covenant
provided for in this Preferred Securities Guarantee shall include:

         (a)      a statement that each officer signing the Officers'
Certificate has read the covenant or condition and the definition relating
thereto;

         (b)     a brief statement of the nature and scope of the examination
or investigation undertaken by each officer in rendering the Officers'
Certificate;

         (c)      a statement that each such officer has made such examination
or investigation as, in such officer's opinion, is necessary to enable such
officer to express an informed opinion as to whether or not such covenant or
condition has been complied with; and

         (d)     a statement as to whether, in the opinion of each such
officer, such condition or covenant has been complied with.

         "Person" means a legal person, including any individual, corporation,
estate, partnership, joint venture, association, joint stock company, limited
liability company, trust, unincorporated association, or government or any
agency or political subdivision thereof, or any other entity of whatever
nature.

         "Preferred Guarantee Trustee" means State Street Bank and Trust
Company, until a Successor Preferred Guarantee Trustee has been appointed and
has accepted such appointment pursuant to the terms of this Preferred
Securities Guarantee and thereafter means each such Successor Preferred
Guarantee Trustee.





                                       3
<PAGE>   8

         "Responsible Officer" means, with respect to the Preferred Guarantee
Trustee, any officer within the Corporate Trust Office of the Preferred
Guarantee Trustee, including any vice-president, any assistant vice-president,
any assistant secretary, the treasurer, any assistant treasurer or other
officer of the Corporate Trust Office of the Preferred Guarantee Trustee
customarily performing functions similar to those performed by any of the above
designated officers and also means, with respect to a particular corporate
trust matter, any other officer to whom such matter is referred because of that
officer's knowledge of and familiarity with the particular subject.

         "Successor Preferred Guarantee Trustee" means a successor Preferred
Guarantee Trustee possessing the qualifications to act as Preferred Guarantee
Trustee under Section 4.1.

         "Trust Indenture Act" means the Trust Indenture Act of 1939,  as
amended.

                                   ARTICLE II
                              TRUST INDENTURE ACT

SECTION 2.1      Trust Indenture Act; Application

         (a)     This Preferred Securities Guarantee is subject to the
provisions of the Trust Indenture Act that are required to be part of this
Preferred Securities Guarantee and shall, to the extent applicable, be governed
by such provisions; and

         (b)     If and to the extent that any provision of this Preferred
Securities Guarantee limits, qualifies or conflicts with the duties imposed by
Section 310 to 317, inclusive, of the Trust Indenture Act, such imposed duties
shall control.

SECTION 2.2      Lists of Holders of Securities

         (a)     The Guarantor shall provide the Preferred Guarantee Trustee
with a list, in such form as the Preferred Guarantee Trustee may reasonably
require, of the names and addresses of the Holders of the Preferred Securities
("List of Holders") as of such date, (i) within 1 Business Day after January 1
and June 30 of each year, and (ii) at any other time within 30 days of receipt
by the Guarantor of a written request for a List of Holders as of a date no
more than 14 days before such List of Holders is given to the Preferred
Guarantee Trustee provided, that the Guarantor shall not be obligated to
provide such List of Holders at any time the List of Holders does not differ
from the most recent List of Holders given to the Preferred Guarantee Trustee
by the Guarantor.  The Preferred Guarantee Trustee may destroy any List of
Holders previously given to it on receipt of a new List of Holders.

         (b)     The Preferred Guarantee Trustee shall comply with its
obligations under Sections 311(a), 311(b) and Section 312(b) of the Trust
Indenture Act.





                                       4
<PAGE>   9

SECTION 2.3      Reports by the Preferred Guarantee Trustee

         Within 60 days after May 15 of each year, the Preferred Guarantee
Trustee shall provide to the Holders of the Preferred Securities such reports
as are required by Section 313 of the Trust Indenture Act, if any, in the form
and in the manner provided by Section 313 of the Trust Indenture Act. The
Preferred Guarantee Trustee shall also comply with the requirements of Section
313(d) of the Trust Indenture Act.

SECTION 2.4      Periodic Reports to Preferred Guarantee Trustee

         The Guarantor shall provide to the Preferred Guarantee Trustee such
documents, reports and information as required by Section 314 (if any) and the
compliance certificate required by Section 314 of the Trust Indenture Act in
the form, in the manner and at the times required by Section 314 of the Trust
Indenture Act.

SECTION 2.5      Evidence of Compliance with Conditions Precedent

         The Guarantor shall provide to the Preferred Guarantee Trustee such
evidence of compliance with any conditions precedent, if any, provided for in
this Preferred Securities Guarantee that relate to any of the matters set forth
in Section 314(c) of the Trust Indenture Act.  Any certificate or opinion
required to be given by an officer pursuant to Section 314(c)(1) may be given
in the form of an Officers' Certificate.

SECTION 2.6      Events of Default; Waiver

         The Holders of a Majority in liquidation amount of Preferred
Securities may, by vote, on behalf of the Holders of all of the Preferred
Securities, waive any past Event of Default and its consequences.  Upon such
waiver, any such Event of Default shall cease to exist, and any Event of
Default arising therefrom shall be deemed to have been cured, for every purpose
of this Preferred Securities Guarantee, but no such waiver shall extend to any
subsequent or other default or Event of Default or impair any right consequent
thereon.

SECTION 2.7      Event of Default; Notice

         (a)     The Preferred Guarantee Trustee shall, within 90 days after
the occurrence of an Event of Default, transmit by mail, first class postage
prepaid, to the Holders of the Preferred Securities, notices of all Events of
Default actually known to a Responsible Officer of the Preferred Guarantee
Trustee, unless such defaults have been cured before the giving of such notice,
provided, that, the Preferred Guarantee Trustee shall be protected in
withholding such notice if and so long as a Responsible Officer of the
Preferred Guarantee Trustee in good faith determines that the withholding of
such notice is in the interests of the Holders of the Preferred Securities.

         (b)     The Preferred Guarantee Trustee shall not be deemed to have
knowledge of any Event of Default unless the Preferred Guarantee Trustee shall
have received written notice, or of





                                       5
<PAGE>   10

which a Responsible Officer of the Preferred Guarantee Trustee charged with the
administration of the Trust Agreement shall have obtained actual knowledge.

SECTION 2.8      Conflicting Interests

         The Trust Agreement shall be deemed to be specifically described in
this Preferred Securities Guarantee for the purposes of clause (i) of the first
proviso contained in Section 310(b) of the Trust Indenture Act.

                                  ARTICLE III
                          POWERS, DUTIES AND RIGHTS OF
                          PREFERRED GUARANTEE TRUSTEE

SECTION 3.1      Powers and Duties of the Preferred Guarantee Trustee

         (a)     This Preferred Securities Guarantee shall be held by the
Preferred Guarantee Trustee for the benefit of the Holders of the Preferred
Securities, and the Preferred Guarantee Trustee shall not transfer this
Preferred Securities Guarantee to any Person except a Holder of Preferred
Securities exercising his or her rights pursuant to Section 5.4(b) or to a
Successor Preferred Guarantee Trustee on acceptance by such Successor Preferred
Guarantee Trustee of its appointment to act as Successor Preferred Guarantee
Trustee.  The right, title and interest of the Preferred Guarantee Trustee
shall automatically vest in any Successor Preferred Guarantee Trustee, and such
vesting and cessation of title shall be effective whether or not conveyancing
documents have been executed and delivered pursuant to the appointment of such
Successor Preferred Guarantee Trustee.

         (b)     If an Event of Default actually known to a Responsible Officer
of the Preferred Guarantee Trustee has occurred and is continuing, the
Preferred Guarantee Trustee shall enforce this Preferred Securities Guarantee
for the benefit of the Holders of the Preferred Securities.

         (c)     The Preferred Guarantee Trustee, before the occurrence of any
Event of Default and after the curing of all Events of Default that may have
occurred, shall undertake to perform only such duties as are specifically set
forth in this Preferred Securities Guarantee, and no implied covenants shall be
read into this Preferred Securities Guarantee against the Preferred Guarantee
Trustee.  In case an Event of Default has occurred (that has not been cured or
waived pursuant to Section 2.6) and is actually known to a Responsible Officer
of the Preferred Guarantee Trustee, the Preferred Guarantee Trustee shall
exercise such of the rights and powers vested in it by this Preferred
Securities Guarantee, and use the same degree of care and skill in its exercise
thereof, as a prudent person would exercise or use under the circumstances in
the conduct of his or her own affairs.

         (d)     No provision of this Preferred Securities Guarantee shall be
construed to relieve the Preferred Guarantee Trustee from liability for its own
negligent action, its own negligent failure to act, or its own willful
misconduct, except that:

                 (i)      prior to the occurrence of any Event of Default and
after the curing or waiving of all such Events of Default that may have
occurred:





                                       6
<PAGE>   11

                          (A)     the duties and obligations of the Preferred
Guarantee Trustee shall be determined solely by the express provisions of this
Preferred Securities Guarantee, and the Preferred Guarantee Trustee shall not
be liable except for the performance of such duties and obligations as are
specifically set forth in this Preferred Securities Guarantee, and no implied
covenants or obligations shall be read into this Preferred Securities Guarantee
against the Preferred Guarantee Trustee; and

                          (B)     in the absence of bad faith on the part of
the Preferred Guarantee Trustee, the Preferred Guarantee Trustee may
conclusively rely, as to the truth of the statements and the correctness of the
opinions expressed therein, upon any certificates or opinions furnished to the
Preferred Guarantee Trustee and conforming to the requirements of this
Preferred Securities Guarantee; but in the case of any such certificates or
opinions that by any provision hereof are specifically required to be furnished
to the Preferred Guarantee Trustee, the Preferred Guarantee Trustee shall be
under a duty to examine the same to determine whether or not they conform to
the requirements of this Preferred Securities Guarantee;

                 (ii)     the Preferred Guarantee Trustee shall not be liable
for any error of judgment made in good faith by a Responsible Officer of the
Preferred Guarantee Trustee, unless it shall be proved that the Preferred
Guarantee Trustee was negligent in ascertaining the pertinent facts upon which
such judgment was made;

                 (iii)    the Preferred Guarantee Trustee shall not be liable
with respect to any action taken or omitted to be taken by it in good faith  in
accordance with the direction of the Holders of not less than a Majority in
liquidation amount of the Preferred Securities relating to the time, method and
place of conducting any proceeding for any remedy available to the Preferred
Guarantee Trustee, or exercising any trust or power conferred upon the
Preferred Guarantee Trustee under this Preferred Securities Guarantee; and

                 (iv)     no provision of this Preferred Securities Guarantee
shall require the Preferred Guarantee Trustee to expend or risk its own funds
or otherwise incur personal financial liability in the performance of any of
its duties or in the exercise of any of its  rights or powers, if the Preferred
Guarantee Trustee shall have reasonable grounds for believing that the
repayment of such funds or liability is not reasonably assured to it under the
terms of this Preferred Securities Guarantee or indemnity, reasonably
satisfactory to the Preferred Guarantee Trustee, against such risk or liability
is not reasonably assured to it.

SECTION 3.2      Certain Rights of Preferred Guarantee Trustee

         (a)     Subject to the provisions of Section 3.1:

                 (i)      The Preferred Guarantee Trustee may conclusively
rely, and shall be fully protected in acting or refraining from acting upon,
any resolution, certificate, statement, instrument, opinion, report, notice,
request, direction, consent, order, bond, debenture, note, other evidence of
indebtedness or other paper or document believed by it to be genuine and to
have been signed, sent or presented by the proper party or parties.





                                       7
<PAGE>   12

                 (ii)     Any direction or act of the Guarantor contemplated by
this Preferred Securities Guarantee shall be sufficiently evidenced by a
Direction or an Officers' Certificate.

                 (iii)    Whenever, in the administration of this Preferred
Securities Guarantee, the Preferred Guarantee Trustee shall deem it desirable
that a matter be proved or established before taking, suffering or omitting any
action hereunder, the Preferred Guarantee Trustee (unless other evidence is
herein specifically prescribed) may, in the absence of bad faith on its part,
request and conclusively rely upon an Officers' Certificate which, upon receipt
of such request, shall be promptly delivered by the Guarantor.

                 (iv)     The Preferred Guarantee Trustee shall have no duty to
see to any recording, filing or registration of any instrument (or any
rerecording, refiling or registration thereof).

                 (v)      The Preferred Guarantee Trustee may consult with
counsel, and the written advice or opinion of such counsel with respect to
legal matters shall be full and complete authorization and protection in
respect of any action taken, suffered or omitted by it hereunder in good faith
and in accordance with such advice or opinion.  Such counsel may be counsel to
the Guarantor or any of its Affiliates and may include any of its employees.
The Preferred Guarantee Trustee shall have the right at any time to seek
instructions concerning the administration of this Preferred Securities
Guarantee from any court of competent jurisdiction.

                 (vi)     The Preferred Guarantee Trustee shall be under no
obligation to exercise any of the rights or powers vested in it by this
Preferred Securities Guarantee at the request or direction of any Holder,
unless such Holder shall have provided to the Preferred Guarantee Trustee such
security and indemnity, reasonably satisfactory to the Preferred Guarantee
Trustee, against the costs, expenses (including attorneys' fees and expenses
and the expenses of the Preferred Guarantee Trustee's agents, nominees or
custodians) and liabilities that might be incurred by it in complying with such
request or direction, including such reasonable advances as may be requested by
the Preferred Guarantee Trustee; provided that, nothing contained in this
Section 3.2(a)(vi) shall be taken to relieve the Preferred Guarantee Trustee,
upon the occurrence of an Event of Default, of its obligation to exercise the
rights and powers vested in it by this Preferred Securities Guarantee.

                 (vii)    The Preferred Guarantee Trustee shall not be bound to
make any investigation into the facts or matters stated in any resolution,
certificate, statement, instrument, opinion, report, notice, request,
direction, consent, order, bond, debenture, note, other evidence of
indebtedness or other paper or document, but the Preferred Guarantee Trustee,
in its discretion, may make such further inquiry or investigation into such
facts or matters as it may see fit.

                 (viii)   The Preferred Guarantee Trustee may execute any of
the trusts or powers hereunder or perform any duties hereunder either directly
or by or through agents, nominees, custodians or attorneys, and the Preferred
Guarantee Trustee shall not be responsible for any misconduct or negligence on
the part of any agent or attorney appointed with due care by it hereunder.





                                       8
<PAGE>   13

                 (ix)     Any action taken by the Preferred Guarantee Trustee
or its agents hereunder shall bind the Holders of the Preferred Securities, and
the signature of the Preferred Guarantee Trustee or its agents alone shall be
sufficient and effective to perform any such action.  No third party shall be
required to inquire as to the authority of the Preferred Guarantee Trustee to
so act or as to its compliance with any of the terms and provisions of this
Preferred Securities Guarantee, both of which shall be conclusively evidenced
by the Preferred Guarantee Trustee's or its agent's taking such action.

                 (x)      Whenever in the administration of this Preferred
Securities Guarantee the Preferred Guarantee Trustee shall deem it desirable to
receive instructions with respect to enforcing any remedy or right or taking
any other action hereunder, the Preferred Guarantee Trustee (i) may request
instructions from the Holders of a Majority in liquidation amount of the
Preferred Securities, (ii) may refrain from enforcing such remedy or right or
taking such other action until such instructions are received, and (iii) shall
be protected in conclusively relying on or acting in accordance with such
instructions.

         (b)     No provision of this Preferred Securities Guarantee shall be
deemed to impose any duty or obligation on the Preferred Guarantee Trustee to
perform any act or acts or exercise any right, power, duty or obligation
conferred or imposed on it in any jurisdiction in which it shall be illegal, or
in which the Preferred Guarantee Trustee shall be unqualified or incompetent in
accordance with applicable law, to perform any such act or acts or to exercise
any such right, power, duty or obligation.  No permissive power or authority
available to the Preferred Guarantee Trustee shall be construed to be a duty.

SECTION 3.3      Not Responsible for Recitals or Issuance of Guarantee

         The recitals contained in this Guarantee shall be taken as the
statements of the Guarantor, and the Preferred Guarantee Trustee does not
assume any responsibility for their correctness.  The Preferred Guarantee
Trustee makes no representation as to the validity or sufficiency of this
Preferred Securities Guarantee.

                                   ARTICLE IV
                          PREFERRED GUARANTEE TRUSTEE

SECTION 4.1      Preferred Guarantee Trustee; Eligibility

         (a)     There shall at all times be a Preferred Guarantee Trustee
which shall:

                 (i)      not be an Affiliate of the Guarantor; and

                 (ii)     be a corporation organized and doing business under
the laws of the United States of America or any State or Territory thereof or
of the District of Columbia, or a corporation or Person permitted by the
Securities and Exchange Commission to act as an institutional trustee under the
Trust Indenture Act, authorized under such laws to exercise corporate trust
powers, having a combined capital and surplus of at least 50 million U.S.
dollars ($50,000,000), and subject to





                                       9
<PAGE>   14

supervision or examination by Federal, State, Territorial or District of
Columbia authority.  If such corporation publishes reports of condition at
least annually, pursuant to law or to the requirements of the supervising or
examining authority referred to above, then, for the purposes of this Section
4.1(a)(ii), the combined capital and surplus of such corporation shall be
deemed to be its combined capital and surplus as set forth in its most recent
report of condition so published.

         (b)     If at any time the Preferred Guarantee Trustee shall cease to
be eligible to so act under Section 4.1(a), the Preferred Guarantee Trustee
shall immediately resign in the manner and with the effect set out in Section
4.2(c).

         (c)     If the Preferred Guarantee Trustee has or shall acquire  any
"conflicting interest" within the meaning of Section 310(b) of the Trust
Indenture Act, the Preferred Guarantee Trustee and Guarantor shall in all
respects comply with the provisions of Section 310(b) of the Trust Indenture
Act.

SECTION 4.2      Appointment, Removal and Resignation of Preferred Guarantee
Trustees

         (a)     Subject to Section 4.2(b), the Preferred Guarantee Trustee may
be appointed or removed without cause at any time by the Guarantor.

         (b)      The Preferred Guarantee Trustee shall not be removed in
accordance with Section 4.2(a) until a Successor Preferred Guarantee Trustee
has been appointed and has accepted such appointment by written instrument
executed by such Successor Preferred Guarantee Trustee and delivered to the
Guarantor.

         (c)     The Preferred Guarantee Trustee appointed to office shall hold
office until a Successor Preferred Guarantee Trustee shall have been appointed
or until its removal or resignation.  The Preferred Guarantee Trustee may
resign from office (without need for prior or subsequent accounting) by an
instrument in writing executed by the Preferred Guarantee Trustee and delivered
to the Guarantor, which resignation shall not take effect until a Successor
Preferred Guarantee Trustee has been appointed and has accepted such
appointment by instrument in writing executed by such Successor Preferred
Guarantee Trustee and delivered to the Guarantor and the resigning Preferred
Guarantee Trustee.

         (d)     If no Successor Preferred Guarantee Trustee shall have been
appointed and accepted appointment as provided in this Section 4.2 within 60
days after delivery to the Guarantor of an instrument of resignation, the
resigning Preferred Guarantee Trustee may petition any court of competent
jurisdiction for appointment of a Successor Preferred Guarantee Trustee.  Such
court may thereupon, after prescribing such notice, if any, as it may deem
proper, appoint a Successor Preferred Guarantee Trustee.

         (e)     No Preferred Guarantee Trustee shall be liable for the acts or
omissions to act of any Successor Preferred Guarantee Trustee.





                                       10
<PAGE>   15

         (f)     Upon termination of this Preferred Securities Guarantee or
removal or resignation of the Preferred Guarantee Trustee pursuant to this
Section 4.2, the Guarantor shall pay to the Preferred Guarantee Trustee all
amounts accrued to the date of such termination, removal or resignation.

                                   ARTICLE V
                                   GUARANTEE

SECTION 5.1      Guarantee

         The Guarantor irrevocably and unconditionally agrees to pay in full to
the Holders the Guarantee Payments (without duplication of amounts theretofore
paid by IBC Capital), as and when due, regardless of any defense, right of
set-off or counterclaim that IBC Capital may have or assert.  The Guarantor's
obligation to make a Guarantee Payment may be satisfied by direct payment of
the required amounts by the Guarantor to the Holders or by causing IBC Capital
to pay such amounts to the Holders.

SECTION 5.2      Waiver of Notice and Demand

         The Guarantor hereby waives notice of acceptance of this Preferred
Securities Guarantee and of any liability to which it applies or may apply,
presentment, demand for payment, any right to require a proceeding first
against IBC Capital or any other Person before proceeding against the
Guarantor, protest, notice of nonpayment, notice of dishonor, notice of
redemption and all other notices and demands.

SECTION 5.3      Obligations Not Affected

         The obligations, covenants, agreements and duties of the Guarantor
under this Preferred Securities Guarantee shall in no way be affected or
impaired by reason of the happening from time to time of any of the following:

         (a)     the release or waiver, by operation of law or otherwise, of
the performance or observance by IBC Capital of any express or implied
agreement, covenant, term or condition relating to the Preferred Securities to
be performed or observed by IBC Capital;


         (b)     the extension of time for the payment by IBC Capital of all or
any portion of the Distributions, Redemption Price, Liquidation Distribution or
any other sums payable under the terms of the Preferred Securities or the
extension of time for the performance of any other obligation under, arising
out of, or in connection with, the Preferred Securities (other than an
extension of time for payment of Distributions, Redemption Price, Liquidation
Distribution or other sum payable that results from the extension of any
interest payment period on the Debentures or any extension of the maturity date
of the Debentures permitted by the Indenture);

         (c)     any failure, omission, delay or lack of diligence on the part
of the Holders to enforce, assert or exercise any right, privilege, power or
remedy conferred on the Holders pursuant to the





                                       11
<PAGE>   16

terms of the Preferred Securities, or any action on the part of IBC Capital
granting indulgence or extension of any kind;

         (d)     the voluntary or involuntary liquidation, dissolution, sale of
any collateral, receivership, insolvency, bankruptcy, assignment for the
benefit of creditors, reorganization, arrangement, composition or readjustment
of debt of, or other similar proceedings affecting, IBC Capital or any of the
assets of IBC Capital;

         (e)     any invalidity of, or defect or deficiency in, the Preferred
Securities;

         (f)     the settlement or compromise of any obligation guaranteed
hereby or hereby incurred; or

         (g)     any other circumstance whatsoever that might otherwise
constitute a legal or equitable discharge or defense of a guarantor, it being
the intent of this Section 5.3 that the obligations of the Guarantor hereunder
shall be absolute and unconditional under any and all circumstances.

         There shall be no obligation of the Holders to give notice to, or
obtain consent of, the Guarantor with respect to the happening of any of the
foregoing.

SECTION 5.4      Rights of Holders

         (a)     The Holders of a Majority in liquidation amount of the
Preferred Securities have the right to direct the time, method and place of
conducting of any proceeding for any remedy available to the Preferred
Guarantee Trustee in respect of this Preferred Securities Guarantee or
exercising any trust or power conferred upon the Preferred Guarantee Trustee
under this Preferred Securities Guarantee.


         (b)     Any Holder of Preferred Securities may institute a legal
proceeding directly against the Guarantor to enforce its rights under this
Preferred Securities Guarantee, without first instituting a legal proceeding
against IBC Capital, the Preferred Guarantee Trustee or any other Person.

SECTION 5.5      Guarantee of Payment

         This Preferred Securities Guarantee creates a guarantee of payment and
not of collection.

SECTION 5.6      Subrogation

         The Guarantor shall be subrogated to all (if any) rights of the
Holders of Preferred Securities against IBC Capital in respect of any amounts
paid to such Holders by the Guarantor under this Preferred Securities
Guarantee; provided, however, that the Guarantor shall not (except to the
extent required by mandatory provisions of law) be entitled to enforce or
exercise any right that it may acquire by way of subrogation or any indemnity,
reimbursement or other agreement, in all cases as a result of payment under
this Preferred Securities Guarantee, if, at the time of any such payment,





                                       12
<PAGE>   17

any amounts are due and unpaid under this Preferred Securities Guarantee.  If
any amount shall be paid to the Guarantor in violation of the preceding
sentence, the Guarantor agrees to hold such amount in trust for the Holders and
to pay over such amount to the Holders.

SECTION 5.7      Independent Obligations

         The Guarantor acknowledges that its obligations hereunder are
independent of the obligations of IBC Capital with respect to the Preferred
Securities, and that the Guarantor shall be liable as principal and as debtor
hereunder to make Guarantee Payments pursuant to the terms of this Preferred
Securities Guarantee notwithstanding the occurrence of any event referred to in
subsections (a) through (g), inclusive, of Section 5.3 hereof.

                                   ARTICLE VI
                   LIMITATION OF TRANSACTIONS; SUBORDINATION

SECTION 6.1      Limitation of Transactions

         So long as any Preferred Securities remain outstanding, if there shall
have occurred an Event of Default or an event of default under the Trust
Agreement, then (a) the Guarantor shall not declare or pay any dividend on,
make any distributions with respect to, or redeem, purchase, acquire or make a
liquidation payment with respect to, any of its capital stock, (b) the
Guarantor shall not make any payment of interest, principal or premium, if any,
on or repay, repurchase or redeem any debt securities (including guarantees)
issued by the Guarantor which rank pari passu with or junior to the Debentures
or (c) the Guarantor shall not make any guarantee payments with respect to the
foregoing (other than pursuant to the Preferred Securities Guarantee
Agreement); provided, however, the Guarantor may declare and pay a stock
dividend where the dividend stock is the same stock as that on which the
dividend is being paid.

SECTION 6.2      Ranking

         This Preferred Securities Guarantee will constitute an unsecured
obligation of the Guarantor and will rank (i) subordinate and junior in right
of payment to all other liabilities of the Guarantor, (ii) pari passu with the
most senior preferred or preference stock now or hereafter issued by the
Guarantor and with any guarantee now or hereafter entered into by the Guarantor
in respect of any preferred or preference stock of any Affiliate of the
Guarantor, and (iii) senior to the Guarantor's common stock.

                                  ARTICLE VII
                                  TERMINATION

SECTION 7.1      Termination

         This Preferred Securities Guarantee shall terminate upon (i) full
payment of the Redemption Price of all Preferred Securities, (ii) upon full
payment of the amounts payable in accordance with the Trust Agreement upon
liquidation of IBC Capital or (iii) upon distribution of the Debentures to





                                       13
<PAGE>   18

the holders of the Preferred Securities. Notwithstanding the foregoing, this
Preferred Securities Guarantee will continue to be effective or will be
reinstated, as the case may be, if at any time any Holder of Preferred
Securities must restore payment of any sums paid under the Preferred Securities
or under this Preferred Securities Guarantee.

                                  ARTICLE VIII
                                INDEMNIFICATION

SECTION 8.1      Exculpation

         (a)     No Indemnified Person shall be liable, responsible or
accountable in damages or otherwise to the Guarantor or any Covered Person for
any loss, damage or claim incurred by reason of any act or omission performed
or omitted by such Indemnified Person in good faith in accordance with this
Preferred Securities Guarantee and in a manner that such Indemnified Person
reasonably believed to be within the scope of the authority conferred on such
Indemnified Person by this Preferred Securities Guarantee or by law, except
that an Indemnified Person shall be liable for any such loss, damage or claim
incurred by reason of such Indemnified Person's negligence or willful
misconduct with respect to such acts or omissions.

         (b)     An Indemnified Person shall be fully protected in relying in
good faith upon the records of the Guarantor and upon such information,
opinions, reports or statements presented to the Guarantor by any Person as to
matters the Indemnified Person reasonably believes are within such other
Person's professional or expert competence and who has been selected with
reasonable care by or on behalf of the Guarantor, including information,
opinions, reports or statements as to the value and amount of the assets,
liabilities, profits, losses, or any other facts pertinent to the existence and
amount of assets from which Distributions to Holders of Preferred Securities
might properly be paid.

SECTION 8.2      Indemnification

         The Guarantor agrees to indemnify each Indemnified Person for, and to
hold each Indemnified Person harmless against, any loss, liability or expense
incurred without negligence or bad faith on its part, arising out of or in
connection with the acceptance or administration of the trust or trusts
hereunder, including the costs and expenses (including reasonable legal fees
and expenses) of defending itself against, or investigating, any claim or
liability in connection with the exercise or performance of any of its powers
or duties hereunder.  The obligation to indemnify as set forth in this Section
8.2 shall survive the termination of this Preferred Securities Guarantee.





                                       14
<PAGE>   19

                                   ARTICLE IX
                                 MISCELLANEOUS

SECTION 9.1      Successors and Assigns

         All guarantees and agreements contained in this Preferred Securities
Guarantee shall bind the successors, assigns, receivers, trustees and
representatives of the Guarantor and shall inure to the benefit of the Holders
of the Preferred Securities then outstanding.

SECTION 9.2      Amendments

         Except with respect to any changes that do not materially adversely
affect the rights of Holders (in which case no consent of Holders will be
required), this Preferred Securities Guarantee may only be amended with the
prior approval of the Holders of at least a Majority in liquidation amount
(including the stated amount that would be paid on redemption, liquidation or
otherwise, plus accrued and unpaid Distributions to the date upon which the
voting percentages are determined) of all the outstanding Preferred Securities.
The provisions of Article VI of the Trust Agreement with respect to meetings of
Holders of the Securities apply to the giving of such approval.

SECTION 9.3      Notices

         All notices provided for in this Preferred Securities Guarantee shall
be in writing, duly signed by the party giving such notice, and shall be
delivered, telecopied or mailed by registered or certified mail, as follows:

         (a)     If given to the Preferred Guarantee Trustee, at the  Preferred
Guarantee Trustee's mailing address set forth below (or such other  address as
the Preferred Guarantee Trustee may give notice of to the Holders  of the
Preferred Securities):

                          State Street Bank and Trust Company
                          Two International Place, 4th Floor
                          Boston, MA 02110
                          Attention: Corporate Trust Department

         (b)     If given to the Guarantor, at the Guarantor's mailing address
set forth below (or such other address as the Guarantor may give notice of to
the Holders of the Preferred Securities):

                          Independent Bank Corporation
                          230 West Main Street
                          Ionia, MI 48846
                          Attention: Chief Financial Officer

         (c)     If given to any Holder of Preferred Securities, at the address
set forth on the books and records of IBC Capital.





                                       15
<PAGE>   20

         All such notices shall be deemed to have been given when received in
person, telecopied with receipt confirmed, or mailed by first class mail,
postage prepaid except that if a notice or other document is refused delivery
or cannot be delivered because of a changed address of which no notice was
given, such notice or other document shall be deemed to have been delivered on
the date of such refusal or inability to deliver.

SECTION 9.4      Benefit

         This Preferred Securities Guarantee is solely for the benefit of the
Holders of the Preferred Securities and, subject to Section 3.1(a), is not
separately transferable from the Preferred Securities.  

SECTION 9.5      Governing Law


         THIS PREFERRED SECURITIES GUARANTEE SHALL BE GOVERNED BY, AND
CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF
MICHIGAN.

         THIS PREFERRED SECURITIES GUARANTEE is executed as of the day and year
first above written.

                                        Independent Bank Corporation,
                                        as Guarantor


                                        By: /s/ William R. Kohls
                                            ------------------------------------
                                            Name:   William R. Kohls
                                            Title:  Chief Financial Officer/
                                                    Executive Vice President

                                        State Street Bank and Trust Company,
                                        as Preferred Guarantee Trustee


                                        By: /s/ Paul D. Allen
                                            ------------------------------------
                                            Name:   Paul D. Allen
                                            Title:  Vice President





                                       16

<PAGE>   1
                                                                     EXHIBIT 4.8



                    AGREEMENT AS TO EXPENSES AND LIABILITIES


     AGREEMENT dated as of December 17, 1996, between Independent Bank
Corporation, a Michigan corporation ("IBC"), and IBC Capital Finance, a
Delaware business trust (the "Trust").

     WHEREAS, the Trust intends to issue its common securities (the "Common
Securities") to, and receive Debentures from, IBC and to issue and sell 9.25%
Cumulative Trust Preferred Securities (the "Preferred Securities") with such
powers, preferences and special rights and restrictions as are set forth in the
Amended and Restated Trust Agreement of the Trust dated as of December 17,
1996, as the same may be amended from time to time (the "Trust Agreement");

     WHEREAS, IBC will directly or indirectly own all of the Common Securities
of the Trust and will issue the Debentures;

     NOW, THEREFORE, in consideration of the purchase by each holder of the
Preferred Securities, which purchase IBC hereby agrees shall benefit IBC and
which purchase IBC acknowledges will be made in reliance upon the execution and
delivery of this Agreement, IBC, including in its capacity as holder of the
Common Securities, and the Trust hereby agree as follows:

                                   ARTICLE I

     SECTION 1.1. GUARANTEE BY IBC.

     Subject to the terms and conditions hereof, IBC, including in its capacity
as holder of the Common Securities, hereby irrevocably and unconditionally
guarantees to each person or entity to whom the Trust is now or hereafter
becomes indebted or liable (the "Beneficiaries") the full payment when and as
due, of any and all Obligations (as hereinafter defined) to such Beneficiaries.
As used herein, "Obligations" means any costs, expenses or liabilities of the
Trust other than obligations of the Trust to pay to holders of any Preferred
Securities or other similar interests in the Trust the amounts due such holders
pursuant to the terms of the Preferred Securities or such other similar
interests, as the case may be.  This Agreement is intended to be for the
benefit of, and to be enforceable by, all such Beneficiaries, whether or not
such Beneficiaries have received notice hereof.

     SECTION 1.2. TERM OF AGREEMENT.

     This Agreement shall terminate and be of no further force and effect upon
the later of (a) the date on which full payment has been made of all amounts
payable to all holders of all the Preferred Securities (whether upon
redemption, liquidation, exchange or otherwise) and (b) the date on which there
are no Beneficiaries remaining; provided, however, that this Agreement shall
continue to be effective or shall be reinstated, as the case may be, if at any
time any holder of Preferred Securities or any Beneficiary must restore payment
of any sums paid under the Preferred Securities, under any obligation, under
the Guarantee Agreement dated the date hereof by IBC and State Street Bank &
Trust Company as guarantee trustee or under this Agreement for any reason
whatsoever.  This Agreement is continuing, irrevocable, unconditional and
absolute.




<PAGE>   2
     SECTION 1.3. WAIVER OF NOTICE.

     IBC hereby waives notice of acceptance of this Agreement and of any
obligation to which it applies or may apply, and IBC hereby waives presentment,
demand for payment, protest, notice of nonpayment, notice of dishonor, notice
of redemption and all other notices and demands.

     SECTION 1.4. NO IMPAIRMENT.

     The obligations, covenants, agreements and duties of IBC under this
Agreement shall in no way be affected or impaired by reason of the happening
from time to time of any of the following:

     (a) the extension of time for the payment by the Trust of all or any
portion of the obligations or for the performance of any other obligation
under, arising out of, or in connection with, the obligations;

     (b) any failure, omission, delay or lack of diligence on the part of the
Beneficiaries to enforce, assert or exercise any right, privilege, power or
remedy conferred on the Beneficiaries with respect to the obligations or any
action on the part of the Trust granting indulgence or extension of any kind;
or

     (c) the voluntary or involuntary liquidation, dissolution, sale of any
collateral, receivership, insolvency, bankruptcy, assignment for the benefit of
creditors, reorganization, arrangement composition or readjustment of debt of,
or other similar proceedings affecting, the Trust or any of the assets of the
Trust.

There shall be no obligation of the Beneficiaries to give notice to, or obtain
the consent of, IBC with respect to the happening of any of the foregoing.

     SECTION 1.5. ENFORCEMENT.

     A Beneficiary may enforce this Agreement directly against IBC, and IBC
waives any right or remedy to require that any action be brought against the
Trust or any other person or entity before proceeding against IBC.

                                   ARTICLE II

     SECTION 2.1. BINDING EFFECT.

     All guarantees and agreements contained in this Agreement shall bind the
successors, assigns, receivers, trustees and representatives of IBC and shall
inure to the benefit of the Beneficiaries.

     SECTION 2.2. AMENDMENT.

     So long as there remains any Beneficiary or any Preferred Securities of
any series are outstanding, this Agreement shall not be modified or amended in
any manner adverse to such 




                                     -2-

<PAGE>   3

Beneficiary or to the holders of the Preferred Securities.

     SECTION 2.3. NOTICES.

     Any notice, request or other communication required or permitted to be
given hereunder shall be given in writing by delivering the same by facsimile
transmission (confirmed by mail), telex, or by registered or certified mail,
addressed as follows (and if so given, shall be deemed given when mailed or
upon receipt of an answer back, if sent by telex):

     IBC Capital
     c/o State Street Bank and Trust Company
     Two International Place, 4th Floor
     Boston, MA 02110
     Facsimile No.: 617-664-5365
     Attention: Corporate Trust Department

     Independent Bank Corporation
     230 West Main Street
     Ionia, MI 48846
     Facsimile No.: 616-527-5836
     Attention:  Chief Financial Officer



     Section 2.4. This agreement shall be governed by and construed and
interpreted in accordance with the laws of the State of Michigan (without
regard to conflict of laws principles).




                     [SIGNATURES ARE ON THE FOLLOWING PAGE]




                                     -3-
<PAGE>   4



      THIS AGREEMENT is executed as of the day and year first above written.


                                     INDEPENDENT BANK CORPORATION


                                     By:   /s/ William R. Kohls 
                                           ------------------------------------
                                           Name:  William R. Kohls
                                           Title: Executive Vice President and
                                                  Chief Financial Officer

                                     IBC CAPITAL FINANCE


                                     By:   /s/ William R. Kohls
                                           ------------------------------------
                                           Name:  William R. Kohls
                                           Title: Administrative Trustee





                                     -4-




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