COLONIAL INVESTMENT GRADE MUNICIPAL TRUST
N-2/A, 1999-08-23
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<PAGE>   1

  AS FILED WITH THE U.S. SECURITIES AND EXCHANGE COMMISSION ON AUGUST 23, 1999


                                          SECURITIES ACT FILE NO.   333-81131
                                  INVESTMENT COMPANY ACT FILE NO.   811-05785

                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM N-2

                        (Check appropriate box or boxes)

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933            [X]


                    Pre-Effective Amendment No. 2                  [X]


                                                -----------
                    Post-Effective Amendment No.                   [ ]
                                                -----------

                                     and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940    [X]


                    Amendment No.       9                          [X]

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

                   COLONIAL INVESTMENT GRADE MUNICIPAL TRUST
               (Exact Name of Registrant as Specified in Charter)

                One Financial Center, Boston, Massachusetts 02111
                    (Address of Principal Executive Offices)

                                 (617) 426-3750
              (Registrant's Telephone Number, including Area Code)


<TABLE>
<CAPTION>
Name and Address of
Agent for Service                                       Copies to
<S>                                   <C>                               <C>
William J. Ballou, Esq.                John M. Loder, Esq.               Gary Schpero, Esq.
Colonial Management Associates, Inc.   Ropes & Gray                      Simpson Thacher & Bartlett
One Financial Center                   One International Place           425 Lexington Avenue
Boston, Massachusetts 02111-2621       Boston, Massachusetts 02110-2624  New York, New York 10017-3954

</TABLE>


                APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
As soon as practicable after the effective date of this Registration Statement.

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, as amended (the "Securities Act"), other than securities offered only in
connection with dividend or interest reinvestment plans, check the following
box. [ ]

It is proposed that this filing will become effective (check appropriate box):
  [ ] when declared effective pursuant to Section 8(c)



        CALCULATION OF REGISTRATION FEE UNDER THE SECURITIES ACT OF 1933

<TABLE>
<CAPTION>

                                            PROPOSED MAXIMUM      PROPOSED MAXIMUM
TITLE OF SECURITIES    AMOUNT BEING         OFFERING PRICE PER    AGGREGATE OFFERING    AMOUNT OF
BEING REGISTERED       REGISTERED (1)       UNIT (1)              PRICE (1)             REGISTRATION FEE (2)
- ---------------------- -------------------- --------------------- --------------------- --------------------
<S>                       <C>                 <C>                   <C>                   <C>
Municipal Auction         2,400               $25,000               $60,000,000           $16,680
Rate Cumulative
Preferred Shares
No Par Value
Per Share

</TABLE>

(1) Estimated solely for purposes of calculating the registration fee.

(2) Previously paid.

The Registrant hereby amends this Registration Statement on such date or dates
as may be necessary to delay its effective date until the Registrant shall file
a further amendment which specifically states that this Registration Statement
shall thereafter become effective in accordance with Section 8(a) of the
Securities Act of 1933 or until the Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.
<PAGE>   2

                  COLONIAL INVESTMENT GRADE MUNICIPAL TRUST
               MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES

                              CROSS REFERENCE SHEET
                           ITEMS REQUIRED BY FORM N-2


                                     PART A

<TABLE>
<CAPTION>

ITEM NO.          ITEM CAPTION                       PROSPECTUS CAPTION
- --------          ------------                       -------------------
<S>               <C>                                <C>
  1               Outside Front Cover                Front Cover Page

  2               Inside Front and Outside           Front and Back Cover Page
                  Back Cover Page

  3               Fee Table and Synopsis             Not Applicable

  4               Financial Highlights               Financial Highlights

  5               Plan of Distribution               Underwriting

  6               Selling Shareholders               Not Applicable

  7               Use of Proceeds                    Use of Proceeds

  8               General Description of the         Prospectus Summary; The
                                                     Trust; Management of the
                                                     Trust; Investment
                                                     Objectives and Policies;
                                                     Risk Factors and Special
                                                     Considerations

 9                Management                         Management of the Trust;
                                                     Custodian, Transfer Agent,
                                                     Dividend Disbursing Agent
                                                     and Registrar

10                Capital Stock, Long-Term Debt,     Capitalization at June 30,
                  Other Securities                   1999; and Description
                                                     of Municipal Preferred;
                                                     Description of Common
                                                     Shares; Certain Provisions
                                                     in the Agreement and
                                                     Declaration of Trust
</TABLE>


<PAGE>   3

<TABLE>
<S>               <C>                                <C>
11                Defaults and Arrears on Senior     Not Applicable
                  Securities

12                Legal Proceedings                  Not Applicable

13                Table of Contents of the           Table of Contents of the
                  Statement of Additional            Statement of Additional
                  Information                        Information

</TABLE>

                                     PART B

<TABLE>
<CAPTION>

                                                     STATEMENT OF ADDITIONAL
ITEM  NO.         ITEM CAPTION                       INFORMATION CAPTION
- ---------         ------------                       ------------------------

<S>               <C>                                <C>

14                Cover Page                         Cover Page

15                Table of Contents                  Table of Contents

16                General Information and History    Not Applicable

17                Investment Objective and           Investment Objectives and
                  Policies                           Policies; Miscellaneous
                                                     Investment Practices

18                Management                         Management of the Trust

19                Control Persons and Principal      Management of the Trust
                  Holders of Securities

20                Investment Advisory and Other      Management of the Trust
                  Services

21                Brokerage Allocation and Other     Portfolio Transactions
                  Practices

22                Tax Status                         Tax Matters

23                Financial Statements               Financial Statements

</TABLE>

                                      -2-
<PAGE>   4

THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE MAY
NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER
TO SELL THESE SECURITIES AND IS NOT SOLICITING AN OFFER TO BUY THESE SECURITIES
IN ANY STATE WHERE THE OFFER OR SALE IS NOT PERMITTED.


                  SUBJECT TO COMPLETION, DATED AUGUST 23, 1999


PROSPECTUS

                                  $60,000,000

                   COLONIAL INVESTMENT GRADE MUNICIPAL TRUST

   MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED ("MUNICIPAL PREFERRED") SHARES
                             2,400 SHARES, SERIES M
                    LIQUIDATION PREFERENCE $25,000 PER SHARE
                               ------------------
    Colonial Investment Grade Municipal Trust is selling 2,400 Series M
Municipal Auction Rate Cumulative Preferred Shares. The Trust is a diversified,
closed-end management investment company that seeks, as its investment
objective, as high a level of after-tax return as is consistent with prudent
risk, by pursuing current income exempt from ordinary federal income tax and
opportunities for long-term appreciation from a portfolio primarily invested in
investment grade municipal bonds. The bonds and notes purchased by the Trust
generally are issued by or on behalf of state and local governmental units,
whose interest is exempt from federal income tax. The Trust may use various
investment techniques and engage in hedging transactions. No assurance can be
given that the Trust's investment objective will be achieved. An investment in
the Trust is not appropriate for all investors.

    Investors in Municipal Preferred shares will be entitled to receive cash
dividends at an annual rate that may vary for the successive dividend periods
for such shares. The dividend rate on the Municipal Preferred shares for the
period from and including the date of issue to but excluding              , 1999
will be     % per year. For each subsequent period, the auction agent will
determine the dividend rate for a particular period by an auction conducted on
the business day prior to that period. Investors in shares of Municipal
Preferred may participate in auctions through their broker-dealers in accordance
with the procedures specified herein. The Trust may redeem shares of Municipal
Preferred as described under "Description of Municipal Preferred -- Redemption."

    This Prospectus sets forth concisely the information you should know before
investing, including information about risks. You should read this Prospectus
before you invest and keep it for future reference. The Trust's Statement of
Additional Information, dated            , 1999, contains additional information
about the Trust and is incorporated by reference into (which means it is
considered to be a part of) this Prospectus. You may obtain a free copy by
calling Colonial Management Associates, Inc. at 1-800-426-3750. See page 41 of
this Prospectus for a table of contents of the Statement of Additional
Information.
                               ------------------
    INVESTING IN THE SHARES OF MUNICIPAL PREFERRED INVOLVES RISKS. SEE THE "RISK
FACTORS AND SPECIAL CONSIDERATIONS" SECTION BEGINNING ON PAGE 6 OF THIS
PROSPECTUS.

    Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or determined if this
Prospectus is truthful or complete. Any representation to the contrary is a
criminal offense.
                               ------------------

<TABLE>
<CAPTION>
                                               PER SHARE       TOTAL
                                               ---------    -----------
<S>                                            <C>          <C>
Public Price.................................   $25,000     $60,000,000
Sales Load...................................
Proceeds to Trust (before expenses)..........
</TABLE>

    The public offering price per share will be increased by the amount of
dividends, if any, that have accumulated from the date the shares of Municipal
Preferred are first issued.
                               ------------------
    The underwriter is offering the shares of Municipal Preferred subject to
various conditions. The underwriter expects to deliver the shares to purchasers,
in book-entry form through The Depository Trust Company, on or about
             , 1999.
                               ------------------
                              Salomon Smith Barney
            , 1999
<PAGE>   5

     YOU SHOULD RELY ONLY ON THE INFORMATION CONTAINED IN OR INCORPORATED BY
REFERENCE IN THIS PROSPECTUS. THE TRUST HAS NOT, AND THE UNDERWRITER HAS NOT,
AUTHORIZED ANY OTHER PERSON TO PROVIDE YOU WITH DIFFERENT INFORMATION. IF ANYONE
PROVIDES YOU WITH DIFFERENT OR INCONSISTENT INFORMATION, YOU SHOULD NOT RELY ON
IT. THE TRUST IS NOT, AND THE UNDERWRITER IS NOT, MAKING AN OFFER TO SELL THESE
SECURITIES IN ANY JURISDICTION WHERE THE OFFER OR SALE IS NOT PERMITTED. YOU
SHOULD ASSUME THAT THE INFORMATION APPEARING IN THIS PROSPECTUS IS ACCURATE AS
OF THE DATE ON THE FRONT COVER OF THIS PROSPECTUS ONLY. THE TRUST'S BUSINESS,
FINANCIAL CONDITION, RESULTS OF OPERATIONS AND PROSPECTS MAY HAVE CHANGED SINCE
THAT DATE.

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

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
PROSPECTUS SUMMARY..........................................    1
RISK FACTORS AND SPECIAL CONSIDERATIONS.....................    6
FINANCIAL HIGHLIGHTS........................................    9
THE TRUST...................................................   10
USE OF PROCEEDS.............................................   10
CAPITALIZATION AT JUNE 30, 1999.............................   11
PORTFOLIO COMPOSITION.......................................   11
INVESTMENT OBJECTIVES AND POLICIES..........................   12
MANAGEMENT OF THE TRUST.....................................   20
THE AUCTION.................................................   22
DETERMINATION OF NET ASSET VALUE............................   25
DESCRIPTION OF MUNICIPAL PREFERRED..........................   26
RATING AGENCY GUIDELINES....................................   33
DESCRIPTION OF COMMON SHARES................................   34
CERTAIN PROVISIONS IN THE AGREEMENT AND DECLARATION OF
  TRUST.....................................................   34
REPURCHASE OF COMMON SHARES; CONVERSION TO OPEN-END FUND....   35
TAX MATTERS.................................................   36
CUSTODIAN, TRANSFER AGENT, DIVIDEND DISBURSING AGENT AND
  REGISTRAR.................................................   39
UNDERWRITING................................................   39
LEGAL OPINIONS..............................................   40
REPORTS TO SHAREHOLDERS.....................................   40
EXPERTS.....................................................   40
FURTHER INFORMATION.........................................   40
TABLE OF CONTENTS OF STATEMENT OF ADDITIONAL INFORMATION....   41
</TABLE>
<PAGE>   6

                               PROSPECTUS SUMMARY

     This summary highlights selected information from this Prospectus. It may
not contain all of the information that is important to you. To understand the
offering of the Municipal Preferred shares fully, you should read this entire
Prospectus carefully, including the risk factors. This summary is qualified in
its entirety by reference to the detailed information included in this
Prospectus and the Statement of Additional Information.

THE OFFERING..................   Colonial Investment Grade Municipal Trust (the
                                 "Trust") is offering a total of 2,400 shares of
                                 Series M Municipal Preferred at a purchase
                                 price of $25,000 per share plus dividends, if
                                 any, that have accumulated from the date the
                                 Trust first issues the shares. Salomon Smith
                                 Barney Inc. is offering the shares as
                                 underwriter.

                                 The Municipal Preferred shares will be
                                 preferred shares of the Trust that entitle
                                 their holders to receive cash dividends at an
                                 annual rate that may vary for the successive
                                 dividend periods for such shares. In general,
                                 except as described under "-- Dividends and
                                 Dividend Periods" and "Description of Municipal
                                 Preferred -- Dividends and Dividend Periods,"
                                 each dividend period will be seven days. An
                                 auction agent will determine the dividend rate
                                 for a particular period by an auction conducted
                                 on the business day immediately prior to the
                                 start of that dividend period.

                                 Investors and potential investors in the
                                 Municipal Preferred shares may participate in
                                 auctions for the Municipal Preferred shares
                                 through their broker-dealers.

                                 Generally, investors in Municipal Preferred
                                 shares will not receive certificates
                                 representing ownership of their shares. The
                                 securities depository (The Depository Trust
                                 Company or any successor) or its nominee for
                                 the account of the investor's agent member
                                 (generally the investor's broker-dealer) will
                                 maintain ownership of the Municipal Preferred
                                 shares in book-entry form. An investor's agent
                                 member, in turn, will maintain records of that
                                 investor's beneficial ownership of Municipal
                                 Preferred shares.

THE TRUST.....................   Colonial Investment Grade Municipal Trust has
                                 operated as a diversified, closed-end
                                 management investment company since 1989. See
                                 "The Trust." The Trust was organized as a
                                 Massachusetts business trust on March 16, 1989
                                 and has registered under the Investment Company
                                 Act of 1940. The Trust's common shares of
                                 beneficial interest are traded on the New York
                                 Stock Exchange under the symbol "CXH."

DIVIDENDS AND DIVIDEND
PERIODS.......................   Dividends on Municipal Preferred shares are
                                 cumulative from the date the shares are first
                                 issued. The Trust will pay dividends on the
                                 shares of Municipal Preferred, out of legally
                                 available funds and when declared by the Board
                                 of Trustees, beginning on                  ,
                                 1999.

                                 After the initial dividend period, each
                                 dividend period for the shares of Municipal
                                 Preferred will generally consist of seven days;
                                 provided, however, that before any auction, the
                                 Trust may
                                        1
<PAGE>   7

                                 decide, subject to limitations and only if it
                                 gives the required notices, to declare a
                                 special dividend period of up to five years.
                                 Accordingly, in the case of dividend periods
                                 that are not special dividend periods,
                                 dividends generally will be payable on each
                                 succeeding Tuesday. The Trust may specify
                                 different dividend payment dates for special
                                 dividend periods.

                                 The Trust will pay dividends through the
                                 securities depository (The Depository Trust
                                 Company) on each dividend payment date.

                                 The dividend rate on the shares of Municipal
                                 Preferred for the period from and including the
                                 date of issue to but excluding
                                   , 1999 will be   % per year. For each
                                 subsequent dividend period, the auction agent
                                 (Bankers Trust Company) will determine the
                                 dividend rate on the shares of Municipal
                                 Preferred through an auction.

MAXIMUM DIVIDEND RATE.........   Generally, the rate at which the Trust pays
                                 dividends on shares of Municipal Preferred may
                                 not exceed the maximum dividend rate. The
                                 maximum dividend rate may vary for different
                                 dividend periods. The maximum dividend rate is
                                 based upon the current credit rating assigned
                                 to the shares of Municipal Preferred and an
                                 independent reference rate that may vary over
                                 time.

                                 If the number of shares of Municipal Preferred
                                 available during an auction exceeds the total
                                 number of shares subject to bids for that
                                 auction at less than or equal to the maximum
                                 dividend rate, then the dividend rate for the
                                 subsequent dividend period will be the maximum
                                 dividend rate. In addition, if the Trust fails
                                 to pay a dividend on shares of Municipal
                                 Preferred, or if the Trust fails to pay the
                                 full redemption price for shares of Municipal
                                 Preferred when due, then the dividend rate for
                                 the subsequent dividend period will be the
                                 maximum dividend rate. If, however, the Trust
                                 cures its failure to pay a dividend or to pay
                                 the full redemption price, then the maximum
                                 dividend rate will not automatically apply.

ASSET MAINTENANCE.............   Under the Trust's Amended and Restated By-Laws,
                                 which establish and fix the rights and
                                 preferences of the shares of Municipal
                                 Preferred, the Trust must maintain

                                      - asset coverage of the Municipal
                                        Preferred shares as required by the
                                        rating agency or agencies rating the
                                        Municipal Preferred shares, and

                                      - asset coverage of the Municipal
                                        Preferred shares of at least 200% as
                                        required by the Investment Company Act
                                        of 1940.

                                 Based on the composition of the Trust's
                                 portfolio and market conditions as of June 30,
                                 1999, the asset coverage of the Municipal
                                 Preferred shares as measured pursuant to the
                                 Investment Company Act of 1940 would be
                                 approximately 310% if the Trust were to issue
                                 all Municipal Preferred shares offered in this
                                 Prospectus, representing approximately 32% of
                                 the Trust's capital.
                                        2
<PAGE>   8

MANDATORY REDEMPTION..........   If the Trust does not maintain its required
                                 asset coverage, it must redeem shares of
                                 Municipal Preferred at $25,000 per share plus
                                 any dividends that accumulate and remain unpaid
                                 up to the date fixed for redemption. The Trust
                                 will limit redemption to the number of
                                 Municipal Preferred shares, together with all
                                 other preferred shares of the Trust, if any,
                                 necessary to restore the required asset
                                 coverage. As of the date of this offering,
                                 there are no other preferred shares
                                 outstanding. The Trust may avoid mandatory
                                 redemption by restoring its required asset
                                 coverage pursuant to rating agency guidelines.
                                 The provisions of the Investment Company Act of
                                 1940 may restrict the Trust's ability to make a
                                 mandatory redemption in connection with a
                                 failure to comply with the rating agencies'
                                 asset coverage requirements.

OPTIONAL REDEMPTION...........   The Trust, at its option and subject to various
                                 conditions, may choose to redeem all or a
                                 portion of the shares of Municipal Preferred
                                 generally on the second business day preceding
                                 any dividend payment date at the price of
                                 $25,000 per share plus accumulated but unpaid
                                 dividends, if any, whether or not earned or
                                 declared to (but not including) the date fixed
                                 for redemption, and, during some special
                                 dividend rate periods, any applicable premium.

LIQUIDATION PREFERENCE........   The liquidation preference (that is, the amount
                                 the Trust must pay to Municipal Preferred
                                 shareholders if the Trust is liquidated) for
                                 shares of Municipal Preferred will be $25,000
                                 per share plus accumulated but unpaid
                                 dividends, if any, whether or not earned or
                                 declared.

VOTING RIGHTS.................   The Investment Company Act of 1940 requires
                                 that the holders of Municipal Preferred shares,
                                 and the holders of any other preferred shares
                                 of the Trust, voting as a separate class, have
                                 the right to

                                      - elect at least two trustees at all
                                        times, and

                                      - elect a majority of the trustees at any
                                        time when dividends on the Municipal
                                        Preferred shares, or any other preferred
                                        shares of the Trust, are unpaid for two
                                        full years.

                                 In each case, the holders of common shares,
                                 Municipal Preferred shares, and any other
                                 preferred shares of the Trust, voting together
                                 as a single class, will elect the remaining
                                 trustees. The holders of Municipal Preferred
                                 shares, and the holders of any other preferred
                                 shares of the Trust, will vote as a separate
                                 class or classes on other matters as required
                                 under the Trust's Agreement and Declaration of
                                 Trust, the Investment Company Act of 1940, and
                                 Massachusetts law. Each common share, each
                                 Municipal Preferred share, and each share of
                                 any other class of preferred shares of the
                                 Trust is entitled to one vote per share.


TAXATION......................   Dividends on shares of Municipal Preferred will
                                 be exempt from regular federal income tax in
                                 the hands of owners of such shares to the
                                 extent such dividends are payable from net
                                 tax-exempt income earned on the Trust's
                                 investments. All or a portion of the


                                        3
<PAGE>   9

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

                                 Trust's dividends may be subject to the federal
                                 alternative minimum tax. The Trust is currently
                                 required to allocate net capital gain and other
                                 income taxable for federal income tax purposes,
                                 if any, proportionately between common shares
                                 of beneficial interest and shares of Municipal
                                 Preferred. The Trust shall, in the case of a
                                 seven-day dividend period or a special dividend
                                 period of 28 days or fewer for the shares of
                                 Municipal Preferred, and may, in the case of
                                 any other special dividend period for such
                                 shares, give notice of the amount of any income
                                 taxable for federal income tax purposes to be
                                 included in a dividend on shares of Municipal
                                 Preferred in advance of the related auction.
                                 The amount of taxable income allocable to
                                 shares of Municipal Preferred will depend upon
                                 the amount of such income realized by the
                                 Trust, but is not generally expected to be
                                 significant.

INVESTMENT OBJECTIVES.........   The Trust's primary investment objective is to
                                 provide as high a level of after-tax total
                                 return as is consistent with prudent risk, by
                                 pursuing current income exempt from ordinary
                                 federal income tax and opportunities for
                                 long-term appreciation from a portfolio
                                 primarily invested in investment grade
                                 municipal bonds.

INVESTMENT STRATEGIES.........   The interest on the instruments in which the
                                 Trust primarily invests is exempt from federal
                                 income tax (other than the possible incidence
                                 of any alternative minimum tax).


                                 Under normal circumstances, the Trust will
                                 invest at least 65% of its assets in investment
                                 grade municipal obligations (which are
                                 considered to be bonds rated Baa or higher by
                                 Moody's Investors Service, Inc. ("Moody's") or
                                 BBB or higher by Standard & Poor's Ratings
                                 Services, a division of The McGraw-Hill
                                 Companies, Inc. ("Standard & Poor's"), or
                                 comparably rated by any other national bond
                                 rating service, or which are unrated but
                                 considered by the Trust's investment advisor,
                                 Colonial Management Associates, Inc., to be of
                                 comparable quality).


                                 The Trust may invest in bonds in lower rating
                                 categories (bonds rated lower than Baa by
                                 Moody's or lower than BBB by Standard & Poor's,
                                 or comparably rated bonds), but the Trust will
                                 not invest more than 35% of its total assets in
                                 lower rated bonds or unrated bonds of all
                                 credit qualities (excluding prerefunded bonds).
                                 Furthermore, the Trust will not invest more
                                 than 25% of its total assets in unrated bonds
                                 of all credit qualities (excluding prerefunded
                                 bonds). The Trust may invest in bonds on which
                                 the issuer has defaulted or failed to pay
                                 principal or interest when due.

                                 In addition to investing in municipal
                                 obligations, the Trust may hedge against
                                 changes in interest rates by engaging in the
                                 following:

                                      - interest rate futures contracts,

                                      - index futures, and

- --------------------------------------------------------------------------------
                                        4
<PAGE>   10

                                      - options on interest rate futures
                                        contracts, tax-exempt indices, and index
                                        futures.

INVESTMENT ADVISOR............   Colonial Management Associates, Inc., an
                                 investment advisor registered under the
                                 Investment Advisers Act of 1940, has served as
                                 the Trust's investment advisor since the
                                 Trust's inception. The investment advisor is a
                                 wholly owned subsidiary of Liberty Funds Group
                                 LLC, which is an indirect majority-owned
                                 subsidiary of Liberty Mutual Insurance Company.

RATINGS.......................   The Trust will not issue shares of Municipal
                                 Preferred unless such shares have a rating of
                                 aaa from Moody's and AAA from Standard &
                                 Poor's.

SECONDARY MARKET TRADING......   Broker-dealers may, but are not obligated to,
                                 maintain a secondary market in shares of
                                 Municipal Preferred outside of auctions. There
                                 can be no assurance that a secondary market
                                 will develop or, if it does develop, that it
                                 will provide owners with liquidity of
                                 investment. Shares of Municipal Preferred may
                                 be transferred outside of auctions only to a
                                 broker-dealer or such other persons who may be
                                 permitted by the Trust.

                                        5
<PAGE>   11

                    RISK FACTORS AND SPECIAL CONSIDERATIONS

     You should consider the following risk factors and other special
considerations in deciding whether to invest in shares of Municipal Preferred:

     DEBT SECURITIES.  The market value of the portfolio securities of Colonial
Investment Grade Municipal Trust (the "Trust") will generally vary inversely
with changes in prevailing interest rates. The Trust's investments will consist
primarily of investment grade securities. The Trust will limit its investments
in (a) bonds rated lower than Baa by Moody's, lower than BBB by Standard and
Poor's or comparably rated bonds and (b) unrated bonds of all credit qualities
but excluding prerefunded bonds, in the aggregate, to not more than 35% of total
assets. The Trust may invest in municipal obligations that are unrated, but will
not purchase any such municipal obligations if as a result the portion of the
Trust's assets invested in unrated securities of all credit qualities, excluding
prerefunded bonds, would exceed 25% of the Trust's total assets.

     Lower rated bonds and unrated bonds of comparable quality generally are
characterized by greater volatility of price and risk of nonpayment of principal
and interest than securities in higher rating categories. The possibility of
defaults by or bankruptcies of issuers of these securities creates, in part,
this risk of principal and interest and may result in nonpayment of principal or
interest or restructuring of debt obligations and, possibly, a reduction in the
Trust's distributions to shareholders and net asset value. Medium and lower
quality tax-exempt securities in which the Trust may invest are speculative to
varying degrees. While these securities may have some quality and protective
characteristics, large uncertainties or major risk exposures to adverse
conditions are expected to outweigh such characteristics. Municipal obligations
in the lower rating categories, and comparable unrated bonds, are regarded as
predominantly speculative in character. With respect to unrated tax-exempt
securities, the Trust will rely more on the judgment, analysis and experience of
the Trust's investment advisor, Colonial Management Associates, Inc. (the
"Advisor"), than for rated securities.

     In evaluating the creditworthiness of an issue, whether rated or unrated,
the Advisor may consider, among other things, the following factors:

     - the issuer's financial resources;

     - the issuer's sensitivity to economic conditions and trends;

     - any operating history of and the community support for the facility
       financed by the issuer;

     - the ability of the issuer's management; and

     - regulatory matters.

     The Advisor may attempt to reduce the risks of investing in medium or lower
rated or unrated municipal obligations and the risks of adverse changes in the
value of the Trust's assets resulting from changes in general market levels of
interest rates through the use of credit analysis and hedging transactions.

     In addition, medium and lower rated or unrated municipal obligations are
frequently traded only in markets where the number of potential purchasers and
sellers, if any, is very limited. This may limit the Trust's ability to buy and
sell such securities at their fair value.

     ZERO COUPON SECURITIES.  The Trust may invest in zero coupon tax-exempt
bonds. Such bonds are debt obligations that do not entitle the holder to any
periodic payments of interest either for the entire life of the obligation or
for an initial period after the issuance of the obligation. See "Investment
Objective and Policies -- Description of Municipal Obligations." Zero coupon
bonds are issued and traded at a discount from their face amounts. The amount of
the discount varies depending on, among other things, the following factors:

     - the time remaining until maturity of the bonds;

     - prevailing interest rates;
                                        6
<PAGE>   12

     - the liquidity of the security; and

     - the perceived credit quality of the issuer.

The market prices of zero coupon bonds generally are more volatile than the
market prices of securities that pay interest periodically and are likely to
respond to changes in interest rates to a greater degree than do non-zero coupon
bonds having similar maturities and credit quality. In order to satisfy a
requirement for qualification as a "regulated investment company" under the
Internal Revenue Code of 1986, the Trust must distribute each year at least 90%
of its net investment income, including the original issue discount accrued on
zero coupon bonds. See "Tax Matters -- Federal Income Tax Matters -- Federal
Taxation of the Trust" in the Statement of Additional Information. Because the
Trust will not receive on a current basis cash payments from the issuer of a
zero coupon bond in respect of accrued original issue discount, in some years
the Trust may have to distribute cash obtained from other sources in order to
satisfy the 90% distribution requirement under the Internal Revenue Code. Such
cash might be obtained from selling other portfolio holdings of the Trust. In
some circumstances, such sales might be necessary in order to satisfy cash
distribution requirements even though investment considerations might otherwise
make it undesirable for the Trust to sell such securities at such time.

     OPTIONS AND FUTURES TRANSACTIONS.  The Trust may seek to hedge its
portfolio against changes in interest rates by using options, index options and
futures and financial futures contracts. The Trust's hedging transactions are
designed to reduce volatility but come at some cost. The Trust must pay for the
option, and the price of the security may not in fact drop. In large part, the
success of the Trust's hedging activities depends on its ability to forecast
movements in securities prices and interest rates. The Trust does not, however,
intend to enter into options and futures transactions for speculative purposes.
The Trust is not required to hedge its portfolio.

     PRIVATE ACTIVITY BONDS.  The Trust may invest in tax-exempt securities
classified as "private activity bonds." These bonds may subject some investors
in the Trust to the alternative minimum tax. The Trust may invest all or any
part of its assets in such private activity bonds.

     ANTITAKEOVER PROVISIONS.  The Trust's Agreement and Declaration of Trust
includes provisions that could limit the ability of other entities or persons to
acquire control of the Trust or to change the composition of its Board of
Trustees. Such provisions could discourage a third party from seeking to obtain
control of the Trust.

     INVESTMENT CONSIDERATIONS.  Investors in the shares of Municipal Preferred
should consider the following factors:

     - The credit ratings of the shares of Municipal Preferred could be reduced
       while an investor holds such shares.

     - Neither broker-dealers nor the Trust are obligated to purchase shares of
       Municipal Preferred in an auction or otherwise nor is the Trust required
       to redeem shares of Municipal Preferred in the event of a failed auction.

     - If sufficient bids do not exist in an auction, the applicable dividend
       rate will be the maximum applicable dividend rate, and in such event,
       owners of the shares of Municipal Preferred wishing to sell will not be
       able to sell all, and may not be able to sell any, of such shares in the
       auction. As a result, investors may not have liquidity of investment.

     SECONDARY MARKET.  The broker-dealers intend to maintain a secondary
trading market in the shares of Municipal Preferred outside of auctions;
however, they have no obligation to do so and there can be no assurance that a
secondary market for the shares of Municipal Preferred will develop or, if it
does develop, that it will provide holders with a liquid trading market. The
shares of Municipal Preferred will not be registered on any stock exchange or on
any automated quotation system. An increase in the level of interest rates
likely will have an adverse effect on the secondary market price of the shares
of Municipal Preferred, and a selling shareholder may have to sell shares of
Municipal Preferred between auctions at a

                                        7
<PAGE>   13

price per share of less than $25,000. You may transfer shares of Municipal
Preferred outside of auctions only to broker-dealers or such other persons as
may be permitted by the Trust.

     YEAR 2000 COMPLIANCE.  Like other investment companies, financial and
business organizations and individuals around the world, the Trust could be
adversely affected if the computer systems used by the Advisor, other service
providers and the issuers in which the Trust invests do not properly process and
calculate date-related information and data from and after January 1, 2000. This
is commonly known as the "Year 2000 Problem." The Advisor is taking steps that
it believes are reasonably designed to address the Year 2000 Problem, including
communicating with vendors who provide services, software and systems to the
Trust to provide that date-related information and data can be properly
processed and calculated on and after January 1, 2000. Many Trust service
providers and vendors, including the Advisor, are in the process of making Year
2000 modifications to their services, software and systems and believe that such
modifications will be completed on a timely basis prior to January 1, 2000. In
addition, Year 2000 readiness information, if available, is one of the factors
considered by the Advisor in its assessment of the issuers in which the Trust
invests. There can be no assurance that these steps will be sufficient to avoid
any adverse impact on the Trust.

                                        8
<PAGE>   14

                              FINANCIAL HIGHLIGHTS

     The table below sets forth specified information for a common share of
beneficial interest of the Trust outstanding throughout each period presented.
The financial highlights for each period presented have been audited by
PricewaterhouseCoopers LLP, the Trust's independent accountants, whose
unqualified report on the periods from 1994 through 1998 is included in the
Trust's December 31, 1998 Annual Report and in "Report of Independent
Accountants" in the "Financial Statements" section of the Statement of
Additional Information. The financial highlights should be read in conjunction
with the financial statements and notes thereto included in "Financial
Statements" in the Statement of Additional Information.
<TABLE>
<CAPTION>
                                                 FOR THE FISCAL YEARS ENDED DECEMBER 31,
                                     ---------------------------------------------------------------
                                       1998       1997       1996       1995       1994       1993
                                     --------   --------   --------   --------   --------   --------
<S>                                  <C>        <C>        <C>        <C>        <C>        <C>
Net asset value -- beginning of
 period............................  $ 11.430   $ 10.870   $ 11.050   $  9.930   $ 11.050   $ 10.960
                                     --------   --------   --------   --------   --------   --------
Net investment income..............     0.600      0.620      0.630      0.644      0.673      0.788
Net realized and unrealized gain
 (loss)............................     0.069      0.575     (0.193)     1.111     (1.121)     0.090
                                     --------   --------   --------   --------   --------   --------
   Total from investment
     operations....................     0.669      1.195      0.437      1.755     (0.448)     0.878
                                     --------   --------   --------   --------   --------   --------
Distributions:
 From net investment income........    (0.607)    (0.635)    (0.617)    (0.635)    (0.672)    (0.788)
 In excess of net investment
   income..........................    (0.002)        --         --         --         --         --
                                     --------   --------   --------   --------   --------   --------
   Total distributions.............    (0.609)    (0.635)    (0.617)    (0.635)    (0.672)    (0.788)
                                     --------   --------   --------   --------   --------   --------
Expenses incurred from initial
 public offering...................        --         --         --         --         --         --
                                     --------   --------   --------   --------   --------   --------
Net asset value -- end of period...  $ 11.490   $ 11.430   $ 10.870   $ 11.050   $  9.930   $ 11.050
                                     ========   ========   ========   ========   ========   ========
Per share market value -- end of
 period............................  $ 11.187   $ 10.560   $ 10.130   $  9.880   $  9.250   $ 10.750
                                     ========   ========   ========   ========   ========   ========
Total return based on net asset
 value(e)..........................      6.23%     11.61%      4.60%     18.63%     (4.08)%     7.85%
                                     ========   ========   ========   ========   ========   ========
Total return based on market
 value(f)..........................     11.94%     10.76%      9.06%     13.87%     (8.12)%    (2.16)%
                                     ========   ========   ========   ========   ========   ========
Ratio of operating expenses to
 average net assets(h).............      0.77%      0.83%      0.88%      1.08%      0.94%      0.87%
Ratio of net investment income to
 average net assets(h).............      5.24%      5.63%      5.80%      6.08%      6.46%      7.08%
Portfolio turnover rate............        24%        21%        20%        37%        34%        35%
Net assets at end of period
 (000).............................  $132,242   $131,503   $125,125   $127,118   $114,260   $127,213

<CAPTION>
                                       FOR THE FISCAL YEARS ENDED DECEMBER 31,
                                     -------------------------------------------
                                       1992       1991       1990       1989(a)
                                     --------   --------   --------     --------
<S>                                  <C>        <C>        <C>          <C>
Net asset value -- beginning of
 period............................  $ 11.090   $ 10.850   $ 11.020     $ 11.160
                                     --------   --------   --------     --------
Net investment income..............     0.848      0.886      0.942(b)     0.535(c)
Net realized and unrealized gain
 (loss)............................    (0.132)     0.248     (0.167)      (0.107)
                                     --------   --------   --------     --------
   Total from investment
     operations....................     0.716      1.134      0.775        0.428
                                     --------   --------   --------     --------
Distributions:
 From net investment income........    (0.846)    (0.894)    (0.945)      (0.524)
 In excess of net investment
   income..........................        --         --         --           --
                                     --------   --------   --------     --------
   Total distributions.............    (0.846)    (0.894)    (0.945)      (0.524)
                                     --------   --------   --------     --------
Expenses incurred from initial
 public offering...................        --         --         --       (0.044)
                                     --------   --------   --------     --------
Net asset value -- end of period...  $ 10.960   $ 11.090   $ 10.850     $ 11.020
                                     ========   ========   ========     ========
Per share market value -- end of
 period............................  $ 11.750   $ 11.750           (d)          (d)
                                     ========   ========   ========     ========
Total return based on net asset
 value(e)..........................      6.17%     10.12%      6.83%            (e)
                                     ========   ========   ========     ========
Total return based on market
 value(f)..........................      7.43%     12.55%      2.83%        2.29%(g)
                                     ========   ========   ========     ========
Ratio of operating expenses to
 average net assets(h).............      0.86%      0.87%      0.45%(b)       --(c)
Ratio of net investment income to
 average net assets(h).............      7.76%      8.11%      8.66%(b)     8.30%(c)(i)
Portfolio turnover rate............        18%        15%        22%          32%(i)
Net assets at end of period
 (000).............................  $126,169   $127,589   $124,871     $126,856
</TABLE>

- ---------------
(a) The Trust commenced investment operations on May 26, 1989.

(b) Net of fees and expenses waived or borne by the Advisor which amounted to $
    0.046 and a ratio of fees and expenses waived or borne by the Advisor to
    average net assets of 0.43%.

(c) Net of fees and expenses waived or borne by the Advisor which amounted to $
    0.052 and a ratio of fees and expenses waived or borne by the Advisor to
    average net assets of 0.81% (annualized).

(d) Per share market value: End of period of the Trust was not included in the
    audited financial statements of the Trust for periods prior to 1991.

(e) Total return at net asset value assuming all distributions reinvested. Total
    return at net asset value for the Trust was not included in the audited
    financial statements of the Trust for periods prior to 1990.

(f) Total return at market value assuming all distributions reinvested and
    excluding brokerage commissions.

(g) Not annualized.

(h) The benefits derived from custody credits and directed brokerage
    arrangements had no impact. Ratios for periods prior to 1995 are net of
    benefits received, if any.

(i) Annualized.

                                        9
<PAGE>   15

                                   THE TRUST

     The Trust is a closed-end, diversified management investment company. The
Trust's investment objective is to seek as high a level of after-tax total
return as is consistent with prudent risk, by pursuing current income exempt
from ordinary federal income tax and opportunities for long-term appreciation
from a portfolio primarily invested in investment grade municipal bonds. The
bonds and notes purchased by the Trust generally are issued by or on behalf of
state and local governmental units, and the interest on such bonds and notes is
exempt from federal income tax (other than the possible incidence of any
alternative minimum tax) ("Municipal Obligations"). See "Investment Objectives
and Policies." No assurance can be given that the Trust's investment objectives
will be achieved. All or a portion of the Trust's dividends may be subject to
the federal alternative minimum tax. The Trust was organized as a Massachusetts
business trust under the laws of the Commonwealth of Massachusetts on March 16,
1989 and is registered under the Investment Company Act of 1940. In May 1989,
the Trust issued 10,000,000 shares of beneficial interest, no par value (the
"Common Shares"), pursuant to the initial public offering thereof and commenced
operations. The Trust's Common Shares are traded on the New York Stock Exchange
under the symbol "CXH." The Trust's principal office is located at One Financial
Center, Boston, MA 02111, and its telephone number is (617) 426-3750.

                                USE OF PROCEEDS

     The net proceeds of this offering will be approximately $          , after
payment of the sales load to Salomon Smith Barney Inc. (the "Underwriter") and
estimated offering costs.

     The net proceeds of the offering will be invested in accordance with the
Trust's investment objectives and policies. It is presently anticipated that the
Trust will be able to invest substantially all of the net proceeds in Municipal
Obligations that meet the Trust's investment objectives at or shortly (within
six to eight weeks) after the completion of the offering. To the extent that all
of the proceeds cannot be so invested, pending such investment, the Trust will
invest such proceeds initially in high-quality, short-term tax-exempt money
market securities, the income on which will be exempt from federal income taxes
(other than the possible incidence of any alternative minimum tax), or in
high-quality Municipal Obligations with relatively low volatility (such as
prerefunded and intermediate-term securities), to the extent such securities are
available. If necessary to invest fully the net proceeds of the offerings
immediately, the Trust may also purchase, as temporary investments, short-term
taxable investments of the type described under "Investment Objectives and
Policies -- Temporary and Defensive Investments," the income on which is subject
to federal income taxes.

                                       10
<PAGE>   16

                                 CAPITALIZATION
                                AT JUNE 30, 1999

     The following table sets forth the unaudited capitalization of the Trust at
June 30, 1999 and as adjusted to give effect to the issuance of the shares of
Series M Municipal Preferred offered hereby (including estimated offering
expenses and sales loads of $889,180).

<TABLE>
<CAPTION>
                                                                 ACTUAL       AS ADJUSTED
                                                              ------------    ------------
<S>                                                           <C>             <C>
Shareholders' Equity:
  Preferred Shares, no par value per share; 2,400 shares
     authorized (no shares issued; 2,400 shares of Municipal
     Auction Rate Cumulative Preferred Shares issued, as
     adjusted, at $25,000 per share liquidation
     preference)............................................  $         --    $ 60,000,000
  Common Shares, no par value per share; unlimited shares
     authorized; 11,509,000 shares outstanding*.............   127,930,049     127,040,869
  Undistributed (overdistributed) net investment income.....       (77,854)        (77,854)
  Net realized gain (loss) from investment transactions.....    (4,516,371)     (4,516,371)
  Net unrealized appreciation of investments................     3,351,332       3,351,332
                                                              ------------    ------------
     Net Assets.............................................  $126,687,156    $185,797,976
                                                              ============    ============
</TABLE>

- ---------------
* None of these outstanding shares are held by or for the account of the Trust.

                             PORTFOLIO COMPOSITION

     As of June 30, 1999, approximately 99.8% of the market value of the Trust's
portfolio was invested in long- and intermediate-term Municipal Obligations and
approximately 0.2% of the market value of the Trust's portfolio was invested in
short-term securities. For purposes of the foregoing sentence, futures in which
the Trust has invested are not included as long- and intermediate-term Municipal
Obligations or as short-term securities and are not included in the market
valuation of the Trust's portfolio. The following table sets forth information
with respect to the composition of the Trust's investment portfolio (excluding
short-term securities) as of June 30, 1999.

<TABLE>
<CAPTION>
  STANDARD &   NUMBER OF       MARKET                             NUMBER OF       MARKET
  POOR'S*       ISSUES          VALUE        PERCENT   MOODY'S*    ISSUES          VALUE        PERCENT
  ----------   ---------   ---------------   -------   --------   ---------   ---------------   -------
  <S>          <C>         <C>               <C>       <C>        <C>         <C>               <C>
    AAA            52      $ 63,767,875.70    50.65%      Aaa         57      $ 66,563,894.60    52.88%
    AA              7         9,550,885.00     7.59        Aa         10        12,202,259.95     9.69
     A              9        13,249,067.40    10.52         A          5         7,641,956.50     6.07
    BBB            14        15,137,271.65    12.02       Baa          8        10,656,497.10     8.46
                                                           Ba          1           972,500.00     0.77
   NR**            37        24,195,016.20    19.22      NR**         38        27,863,007.80    22.13
                  ---      ---------------   ------     -----        ---      ---------------   ------
   Total          119      $125,900,115.95   100.00%    Total        119      $125,900,115.95   100.00%
                  ===      ===============   ======     =====        ===      ===============   ======
</TABLE>

- ---------------
* Standard & Poor's rating categories may be modified further by a plus (+) or
  minus (-) in AA, A, BBB, BB, B and C ratings. Moody's rating categories may be
  modified further by a 1, 2 or 3 in Aa, A, Baa, Ba and B ratings.

** Many bonds are rated by only one rating agency, which results in a higher
   percentage of bonds in this category. The total market value of bonds that do
   not carry a rating from any rating service is $20,014,303, which represents
   15.9% of the Trust.

                                       11
<PAGE>   17

                       INVESTMENT OBJECTIVES AND POLICIES

     The Trust's investment objective is to seek as high a level of after-tax
total return as is consistent with prudent risk, by pursuing current income
exempt from ordinary federal income tax and opportunities for long-term
appreciation from a portfolio primarily invested in investment grade municipal
bonds. The bonds and notes purchased by the Trust generally are issued by or on
behalf of state and local governmental units, and the interest on such bonds and
notes is exempt from federal income tax (other than the possible incidence of
any alternative minimum tax).

     Under normal circumstances, the Trust will invest primarily (at least 65%
of its assets) in investment grade Municipal Obligations (bonds rated Baa or
higher by Moody's or BBB or higher by Standard & Poor's or comparably rated by
any other national bond rating service, or which are unrated but considered by
the Advisor to be of comparable quality). In addition, the Trust will not
purchase any Municipal Obligation that is not rated by a national bond rating
service, excluding prerefunded bonds, if as a result the portion of the Trust's
assets invested in Municipal Obligations that are not rated, when added to the
portion of the Trust's assets invested in securities rated lower than Baa by
Moody's, lower than BBB by Standard & Poor's or comparably by another national
bond rating service, if any, would exceed 35% of the Trust's total assets. The
Trust will limit its investments in unrated bonds of all credit qualities,
excluding prerefunded bonds, to 25% of its total assets (which 25% shall be
included in the 35% aggregate limit for lower rated and unrated bonds above).
The Trust will not purchase bonds rated lower than B or that are unrated but
considered by the Advisor to be of equivalent quality.

     Although the Trust's investments will consist primarily of investment grade
securities, whose issuers are considered to have a current adequate capacity to
pay principal and interest, they may include bonds in the lower rating
categories, and comparable unrated bonds, which are considered to be speculative
to varying degrees. For example, bonds rated Ba or BB are regarded, on balance,
as predominantly speculative with respect to capacity to pay interest and repay
principal in accordance with the terms of the obligation. For a more complete
description of bond ratings, see Appendix A to the Statement of Additional
Information. Medium and lower rated or unrated tax-exempt bonds are frequently
traded only in markets where the number of potential purchasers and sellers, if
any, is very limited. This consideration may limit the ability of the Trust to
sell such securities at their fair value in response to changes in the economy
or the financial markets.

     The Trust may invest in a relatively high percentage of Municipal
Obligations issued by entities having similar characteristics. The issuers may
be located in the same geographic area or may pay their interest obligations
from revenues of similar projects. This may make the Trust more susceptible to
similar economic, political or regulatory occurrences. As the similarity in
issuers increases, the potential for fluctuation of the net asset value of the
Trust's securities also increases.

     The Trust's policy is not to concentrate in any industry, but the Trust may
invest up to 25% of its assets in industrial development revenue bonds or
private activity revenue bonds that are based, directly or indirectly, on the
credit of private entities in any one industry, or in securities of private
issuers in any one industry (governmental issuers are not considered to be part
of any "industry"). See "Investment Objectives and Policies -- Fundamental
Investment Policies" and "Investment Objectives and Policies -- Other Investment
Policies" in the Statement of Additional Information.

     It is a fundamental policy of the Trust, which may not be changed without
approval of holders of a majority of the Trust's outstanding voting securities
(as defined in "Investment Objectives and Policies -- Fundamental Investment
Policies" and "Investment Objectives and Policies -- Other Investment Policies"
in the Statement of Additional Information), to invest, under normal
circumstances, at least 80% of its assets in tax-exempt bonds and tax-exempt
notes. Except for this policy and the investment policies listed in the
Statement of Additional Information under "Investment Objectives and
Policies -- Fundamental Investment Policies," the Trust's investment policies
and its investment objectives may be changed without shareholder approval.

                                       12
<PAGE>   18

     In addition to investing in Municipal Obligations, the Trust may seek to
achieve its objectives by engaging in hedging transactions. As a hedge against
changes in interest rates the Trust may engage in transactions involving
interest rate futures contracts ("financial futures"), index futures and options
on financial futures, tax-exempt indices and index futures. See "Investment
Objectives and Policies -- Hedging Activities." The costs of and possible losses
incurred from such transactions may reduce the Trust's current return.

     The Trust may also purchase securities on a "when-issued" basis, enter into
repurchase agreements and invest in other taxable instruments, subject to
limitations. See "Investment Objectives and Policies -- Forward Commitments,"
"Investment Objectives and Policies -- Repurchase Agreements" and "Investment
Objectives and Policies -- Temporary and Defensive Investments."

DESCRIPTION OF MUNICIPAL OBLIGATIONS

     As used in this Prospectus, the term "Municipal Obligations" refers to debt
obligations the interest on which was at the time of issuance, in the opinion of
bond counsel to the issuer, exempt from federal income tax (other than the
possible incidence of any alternative minimum tax). (For a description of the
federal alternative minimum tax, see "Tax Matters -- Federal Taxation of
Shareholders.") Municipal Obligations include debt obligations issued by a state
(including the District of Columbia), a territory or a possession of the United
States, or any political subdivision thereof, to obtain funds for various public
purposes, including the construction of a wide range of public facilities such
as airports, bridges, highways, housing, mass transportation, roads, schools and
water and sewer works or for other public purposes. Interest on industrial
development bonds used to fund the construction, equipment, repair or
improvement of privately operated industrial or commercial facilities may also
be exempt from federal income tax, but the size of such issues is limited under
current federal tax law. The Trust may not be a desirable investment for
"substantial users" of facilities financed by industrial development bonds or
private activity bonds or for "related persons" of substantial users. See "Tax
Matters" in this Prospectus and "Tax Matters" in the Statement of Additional
Information. The Trust has no present intention of investing in Municipal
Obligations the interest on which is not exempt from federal income tax (other
than the possible incidence of any alternative minimum tax).

     The two principal classifications of Municipal Obligations are general
obligation bonds and limited obligation (or revenue) bonds. General obligation
bonds are obligations involving the credit of an issuer possessing taxing power
and are payable from the issuer's general unrestricted revenues and not from any
particular fund or source. The characteristics and method of enforcement of
general obligation bonds vary according to the law applicable to the particular
issuer, and payment may be dependent upon appropriation by the issuer's
legislative body. Limited obligation bonds are payable only from the revenues
derived from a particular facility or class of facilities or, in some cases,
from the proceeds of a special excise or other specific revenue source.
Tax-exempt industrial development bonds and private activity bonds also
generally are revenue bonds and thus not payable from the unrestricted revenues
of the issuer. The credit quality of industrial development bonds and private
activity bonds is usually directly related to the credit of the corporate user
of the facilities. Payment of principal of and interest on industrial
development bonds and private activity bonds is the responsibility of the
corporate user (and any guarantor).

     Prices and yields on Municipal Obligations are dependent on a variety of
factors, including general money market conditions, the financial condition of
the issuer, general conditions in the tax-exempt bond market, the size of a
particular offering, the maturity of the obligation and the ratings of
particular issues, and are subject to change from time to time. Information
about the financial condition of an issuer of Municipal Obligations may not be
as extensive as that which is made available by corporations whose securities
are publicly traded.

     The ratings of Moody's, Standard & Poor's and other national bond rating
services represent their opinions and are not absolute standards of quality.
Municipal Obligations with the same maturity, interest rate and rating may have
different yields while Municipal Obligations of the same maturity and interest
rate with different ratings may have the same yield.

                                       13
<PAGE>   19

     Obligations of issuers of Municipal Obligations are subject to the
provisions of bankruptcy, insolvency and other laws, such as the Federal
Bankruptcy Reform Act of 1978, affecting the rights and remedies of creditors.
Congress or state legislatures may seek to extend the time for payment of
principal or interest, or both, or to impose other constraints upon enforcement
of such obligations. There is also the possibility that, as a result of
litigation or other conditions, the power or ability of issuers to meet their
obligations to pay interest on and principal of their Municipal Obligations may
be materially impaired or their obligations may be found to be invalid or
unenforceable. Such litigation or conditions may from time to time have the
effect of introducing uncertainties in the market for Municipal Obligations or
certain segments thereof, or materially affecting the credit risk with respect
to particular bonds. Adverse economic, business, legal or political developments
might affect all or a substantial portion of the Trust's Municipal Obligations
in the same manner.

     The Trust may invest up to 15% of its net assets in inverse floating rate
municipal bonds (which are bonds whose interest rates bear an inverse
relationship to the interest rate on another security or the value of an index)
("inverse floaters"). An investment in inverse floaters may involve greater risk
than an investment in a fixed rate bond. Because changes in the interest rate on
the other security or index inversely affect the residual interest paid on the
inverse floater, the value of an inverse floater is generally more volatile than
that of a fixed rate bond. Inverse floaters have interest rate adjustment
formulas which generally reduce or, in the extreme, eliminate the interest paid
to the Trust when short-term interest rates rise, and increase the interest paid
to the Trust when short-term interest rates fall. Inverse floaters have varying
degrees of liquidity, and the market for these securities is volatile. These
securities tend to underperform the market for fixed rate bonds in a rising
interest rate environment, but tend to outperform the market for fixed rate
bonds when interest rates decline. Although volatile, inverse floaters typically
offer the potential for yields exceeding the yields available on fixed rate
bonds with comparable credit quality, coupon, call provisions and maturity.
These securities usually permit the investor to convert the floating rate to a
fixed rate (normally adjusted downward), and this optional conversion feature
may provide a partial hedge against rising rates if exercised at an opportune
time. Investment in inverse floaters may amplify the effects of the Trust's use
of leverage. Should short-term interest rates rise, the combination of the
Trust's investment in inverse floaters and its use of leverage likely will
adversely affect the Trust's income and distributions to shareholders.

HEDGING ACTIVITIES

     Hedging is a means of transferring risk that an investor does not desire to
assume in an uncertain interest rate environment. The Advisor believes it is
possible to reduce or enhance the effects of interest rate fluctuations through
the use of futures contracts and options on financial instruments. However, so
long as either Standard & Poor's or Moody's is rating the shares of Municipal
Preferred, the Trust will only engage in futures or options transactions in
accordance with guidelines of such rating agencies and, to the extent
transactions would not be permitted by such guidelines, only after it has
received written confirmation from Standard & Poor's or Moody's, as appropriate,
that such transactions would not impair the ratings then assigned by such rating
agency to shares of Municipal Preferred. Thus, the ability of the Trust to
engage in hedging activities may be limited by such rating agency restrictions.

     The Trust may purchase and sell financial futures and tax-exempt bond index
futures contracts ("index futures") to hedge against changes, caused by changing
interest rates, in the market value of Municipal Obligations in its portfolio or
that it intends to acquire. In order to hedge, the Trust may also purchase and
write put and call options on financial futures, tax-exempt bond indices and
index futures. The costs of and possible losses incurred from these transactions
may reduce the Trust's current return.

     Income earned by the Trust from its hedging activities will be treated as
capital gain and, if not offset by net realized capital loss, will be
distributed to shareholders in taxable distributions. See "Tax
Matters -- Federal Taxation of Shareholders."

     The Trust will not engage in transactions in futures contracts or related
options for speculative purposes but only as a hedge against changes resulting
from market conditions in the values of securities in

                                       14
<PAGE>   20

its portfolio or that it intends to acquire. In addition, the Trust will not
purchase or sell futures contracts or purchase or sell related options if
immediately thereafter the sum of the amount of its initial margin deposits on
its existing futures and related options positions and premiums paid for related
options would exceed 5% of its total assets (taken at current value). In
instances involving the purchase or sale of futures contracts or call options
thereon or the writing of call or put options thereon by the Trust, an amount of
cash or liquid high-grade securities, equal to the underlying commodity value of
the futures contracts and options (less any related margin deposits) will be
deposited in a segregated account with the Trust's custodian to collateralize
the position and thereby ensure that the use of such futures contracts and
options is unleveraged.

     FINANCIAL FUTURES.  In connection with its hedging activities, the Trust
may engage in transactions involving financial futures. A financial future is a
contract that obligates the seller to deliver and the purchaser to take delivery
of a specified type of financial instrument at a specified future time and at a
specified price. Although financial futures contracts by their terms require
actual delivery and acceptance of securities, in most cases the contracts are
closed out before the settlement date without the making or taking of delivery
of securities. Closing out a futures contract purchase or sale is effected by
entering into an offsetting transaction. Financial futures trade on boards of
trade that have been designated "contracts markets" by the Commodity Futures
Trading Commission. Financial futures trade on these markets in a manner that is
similar to the way a stock trades on a stock exchange. The boards of trade,
through their clearing corporations, guarantee performance of the contracts.
Currently, there are financial futures based on long-term U.S. Treasury bonds,
U.S. Treasury notes, Government National Mortgage Association ("GNMA")
certificates, three-month U.S. Treasury bills and three-month domestic bank
certificates of deposit. The Trust expects other financial futures to be
developed and traded. The Trust expects to engage in transactions involving
financial futures if, in the opinion of the Advisor, they are appropriate
hedging instruments for the Trust.

     The sale of financial futures by the Trust is for the purpose of hedging
the Trust's holdings of long-term debt securities. In the event of a rise in
interest rates, the value of the Trust's short position in financial futures
would increase at approximately the same rate as the value of the long-term
bonds in its portfolio would decline, thereby keeping the net asset value of the
Trust from declining as much as it otherwise would have.

     If, on the other hand, the Trust held cash reserves and interest rates were
expected to decline, the Trust might purchase futures contracts and thus take
advantage of the anticipated rise in the value of long-term securities without
actually buying them. In such an event, the futures contracts could be
liquidated and the Trust's cash reserves could then be used to buy long-term
securities in the cash market.

     Unlike when the Trust purchases or sells a security, no price is paid or
received by the Trust upon the sale or purchase of a financial future. The Trust
will initially be required to deposit with the Trust's custodian an amount of
"initial margin" of cash or U.S. Treasury bills equal to a small percentage of
the contract amount. The nature of initial margin in futures transactions is
different from that of margin in securities transactions in that initial margin
on financial futures does not involve the borrowing of funds by the customer to
finance the transactions. Rather, the initial margin is in the nature of a
performance bond or good faith deposit on the contract which is returned to the
Trust upon termination of the financial future, assuming all contractual
obligations have been satisfied. Subsequent payments, called maintenance margin,
to and from the broker, will be made on a daily basis as the price of the
underlying debt security fluctuates, making the long and short positions in the
financial future more or less valuable, a process known as "marking to market."
For example, when the Trust has sold a financial future and the price of the
underlying debt security has declined, that position will have increased in
value and the Trust will receive from the broker a maintenance margin payment
equal to that increase. Conversely, where the Trust has sold a financial future
and the price of the underlying debt security has increased, the position would
be less valuable, and the Trust would be required to make a maintenance margin
payment to the broker. At any time prior to expiration of the financial future,
the Trust may elect to close the position by taking an opposite position in the
financial future. A final determination of maintenance margin is then made,
additional cash is required to be paid by or released to the Trust, and the
Trust realizes a loss or a

                                       15
<PAGE>   21

gain. While financial futures based on debt securities do provide for the
delivery and acceptance of securities, such deliveries and acceptances are very
seldom made. Generally, the financial future is terminated by entering into an
offsetting transaction. An offsetting transaction for a financial future sale is
effected by the Trust entering into a financial future purchase for the same
aggregate amount of the specific type of financial instrument and same delivery
date. If the price in the sale exceeds the price in the offsetting purchase, the
Trust immediately is paid the difference and thus realizes a gain. If the
offsetting purchase price exceeds the sale price, the Trust pays the difference
and realizes a loss.

     There are several risks in connection with the use of financial futures by
the Trust as a hedging device. One risk arises because of the imperfect
correlation between movements in the price of the financial future and movements
in the price of the debt securities that are the subject of the hedge. Financial
futures based on U.S. Government securities and GNMA certificates historically
have reacted to an increase or decrease in interest rates in a similar fashion
to the underlying U.S. Government securities and GNMA certificates. To the
extent, however, that the Trust enters into financial futures on other than
Municipal Obligations, which together with futures on municipal indices are the
only financial futures currently available, there is a possibility that the
value of such financial futures would not vary in direct proportion to the value
of the Trust's holdings of Municipal Obligations.

     Another result of the imperfect correlation between movements in the prices
of the financial future and of the debt securities being hedged is that the
price of the financial future may move more or less than the price of the debt
securities being hedged. If the price of the financial future moves less than
the price of the securities that are the subject of the hedge, the hedge will
not be fully effective, but if the price of the securities being hedged has
moved in an unfavorable direction, the Trust would be in a better position than
if it had not hedged at all. If the price of the securities being hedged has
moved in a favorable direction, the advantage will be partially offset by the
futures contract. If the price of the financial future moves more than the price
of the security, the Trust will experience either a loss or a gain on the future
which will not be completely offset by movements in the prices of the debt
securities which are the subject of the hedge. To compensate for the imperfect
correlation of movements in the price of debt securities being hedged and
movements in the price of related financial futures, the Trust may sell
financial futures in a greater or lesser dollar amount than the dollar amount of
the securities being hedged.

     The market prices of financial futures may be affected by several factors
other than interest rates. First, all participants in the futures market are
subject to margin deposit and maintenance requirements. Rather than meeting
additional margin deposit requirements, investors may close financial futures
through offsetting transactions, which could distort the normal relationship
between the debt securities and futures markets. Second, from the point of view
of speculators, the deposit requirements in the futures market are less onerous
than margin requirements in the securities market. Therefore, increased
participation by speculators in the futures market may also cause temporary
price distortions. Due to the possibility of price distortions in the futures
market and the imperfect correlation between movements in the prices of debt
securities and movements in the prices of related financial futures, a correct
forecast of interest rate trends by the Advisor may still not result in a
successful hedging transaction.

     Positions in futures contracts may be closed out only on an exchange or
board of trade that provides a secondary market for such futures. Although the
Trust intends to engage in futures transactions only on exchanges or boards of
trade where there appears to be an active secondary market, there is no
assurance that a liquid secondary market on an exchange or board of trade will
exist for any particular contract or at any particular time. If there is not a
liquid secondary market at a particular time, it may not be possible to close a
futures position at such time, and in the event of adverse price movements, the
Trust would continue to be required to make daily cash payments of maintenance
margin. However, in the event financial futures are used to hedge portfolio
securities, such securities will not be sold until the financial futures can be
terminated. In such circumstances, an increase in the price of the securities,
if any, may partially or completely offset losses on the financial futures.

     OPTIONS ON FINANCIAL FUTURES.  The Trust may also purchase put and call
options on financial futures which are traded on a U.S. exchange or board of
trade and enter into closing transactions with respect to

                                       16
<PAGE>   22

such options to terminate an existing position. The purchase of put options on
financial futures is analogous to the sale of futures so as to hedge the Trust's
portfolio of debt securities against the risk of rising interest rates. The
purchase of call options on financial futures is analogous to the purchase of
futures contracts and represents a means of obtaining temporary exposure to
market appreciation at limited risk. Such options may be used to protect against
a market advance when the Trust is not fully invested.

     The Trust may write call options on futures contracts, which constitutes a
partial hedge against any declining price of long-term debt securities. If the
futures price at expiration is below the exercise price, the Trust will retain
the full amount of the option premium, which provides a partial hedge against
any decline that may have occurred in the Trust's holdings of debt securities.
If the futures price at expiration exceeds the exercise price, the Trust will
ordinarily realize a loss equal to the amount of such excess.

     The Trust may write put options on futures contracts, which constitutes a
partial hedge against an increase in the price of long-term debt securities when
the Trust is not fully invested. If the futures price at expiration is above the
exercise price, the Trust will retain the full amount of the option premium,
which provides a partial hedge against any increase in the market price of
long-term debt securities. If the futures price at expiration is less than the
exercise price, the Trust will ordinarily realize a loss equal to the difference
between the futures price and the exercise price.

     An option on a futures contract gives the purchaser the right, in return
for the premium paid, to assume a position in a futures contract (a long
position if the option is a call and a short position if the option is a put) at
a specified exercise price at any time during the period of the option. Upon
exercise of the option, the delivery of the futures position by the writer of
the option to the holder of the option will be accompanied by delivery of the
accumulated balance in the writer's futures margin account which represents the
amount by which the market price of the futures contract, at exercise, exceeds,
in the case of a call, or is less than, in the case of a put, the exercise price
of the option on the futures contract. If an option is exercised on the last
trading day prior to the expiration date of the option, the settlement will be
made entirely in cash in an amount equal to the difference between the exercise
price of the option and the closing price of the futures contract on the
expiration date. Currently options can be purchased or written with respect to
futures contracts on U.S. Treasury bonds on the Chicago Board of Trade. The
holder or writer of an option may terminate his position by selling or
purchasing an option of the same series. There is no guarantee that such closing
transactions can be effected.

     Several special risks relate to transactions in options on futures. The
ability to establish and close out positions on such options will be subject to
the maintenance of a liquid secondary market. Compared to the sale of financial
futures, the purchase of put options on financial futures involves less
potential risk to the Trust because the maximum amount at risk is the premium
paid for the options (plus transaction costs). However, there may be
circumstances when the purchase of a put option on a financial future would
result in a loss to the Trust when the sale of a financial future would not,
such as when there is no movement in the price of debt securities.

     An option position may be closed out only on an exchange or board of trade
that provides a secondary market for an option of the same series. Although the
Trust generally will purchase only those options for which there appears to be
an active secondary market, there is no assurance that a liquid secondary market
on an exchange or board of trade will exist for any particular option, or at any
particular time, and for some options, no secondary market on an exchange or
board of trade may exist. In such event, it might not be possible to effect
closing transactions in particular options, with the result that the Trust would
have to exercise its options in order to realize any profit and would incur
transaction costs upon closing out the futures positions acquired pursuant to
the exercise of such option.

     Reasons for the absence of a liquid secondary market on an exchange or
board of trade include the following:

     - there may be insufficient trading interest in certain options;

     - restrictions may be imposed by an exchange or board of trade on opening
       transactions or closing transactions or both;

                                       17
<PAGE>   23

     - trading halts, suspensions or other restrictions may be imposed with
       respect to particular classes or series of options;

     - unusual or unforeseen circumstances may interrupt normal operations on an
       exchange or board of trade;

     - the facilities of an exchange or board of trade or the Options Clearing
       Corporation (the "Clearing Corporation") may not at all times be adequate
       to handle current trading volume; or

     - one or more exchanges or boards of trade could, for economic or other
       reasons, decide or be compelled at some future date to discontinue the
       trading of options (or a particular class or series of options), in which
       event the secondary market on that exchange or board of trade (or in that
       class or series of options) would cease to exist, although outstanding
       options on that exchange or board of trade which had been issued by the
       Clearing Corporation as a result of trades on that exchange or board of
       trade could continue to be exercisable in accordance with their terms.

     There is no assurance that higher than anticipated trading activity or
other unforeseen events might not, at times, render certain of the facilities of
the Clearing Corporation inadequate, and thereby result in the institution by an
exchange or board of trade of special procedures that may interfere with the
timely execution of customers' orders.

     TAX-EXEMPT BOND INDEX TRANSACTIONS.  The Trust anticipates utilizing
tax-exempt bond index futures as a hedge against changes in the market value of
the Municipal Obligations in its portfolio or which it intends to acquire. A
tax-exempt bond index assigns relative values to the Municipal Obligations
included in the index. A tax-exempt bond index fluctuates with changes in the
market values of the Municipal Obligations included in the index. An index
future is a bilateral agreement pursuant to which two parties agree to receive
or deliver at settlement an amount of cash equal to a specified dollar amount
multiplied by the difference between the value of the index at the close of the
last trading day of the contract and the price at which the future was
originally written. An index future has similar characteristics to financial
futures discussed above except that settlement is made through delivery of cash
rather than the underlying securities.

     The Trust's strategies in employing index futures will be similar to the
strategies involved in financial futures transactions. Tax-exempt bond index
futures transactions also will be subject to risks similar to those described
above with respect to financial futures, except that the correlation between
movements in the price of a futures contract and movements in the price of the
Trust's portfolio securities is likely to be higher for index futures than for
financial futures.

     The Trust may also purchase and write put and call options on tax-exempt
bond indices and on tax-exempt bond index futures and enter into closing
transactions with respect to such options. An option on an index gives the
holder the right to receive cash upon exercise of the option in an amount equal
to a specified multiple times the amount by which the fixed exercise price of
the option exceeds, in the case of a put, or is less than, in the case of a
call, the closing value of the underlying index on the date of exercise. An
option on an index future gives the purchaser the right, in return for the
premium paid, to assume a position in an index contract rather than to sell (in
the case of a put option) or buy (in the case of a call option) a debt
instrument at a specified exercise price at any time during the period of the
option. Upon exercise of the put option, the delivery of the futures position by
the holder of the option to the writer of the option will be accompanied by
delivery of the accumulated balance of the writer's futures margin account,
which represents the amount by which the market price of the index futures
contract, at exercise, is less than the exercise price of the put option on the
index future.

FORWARD COMMITMENTS

     New issues of Municipal Obligations are often purchased on a "when-issued"
or delayed delivery basis. The payment obligations and the interest rate that
will be received on the securities are fixed at the time the buyer enters into
the commitment. The Trust will not begin earning interest on such securities,
however, until the securities are scheduled for settlement. The Trust may enter
into such "forward

                                       18
<PAGE>   24

commitments" if it holds and maintains until the settlement date, in a
segregated account, cash or liquid securities which are "marked to market" daily
in an amount sufficient to meet the purchase price. Forward commitments involve
a risk of loss if the value of the Municipal Obligation to be purchased declines
prior to the settlement date. Such a decline in value could result from, among
other things, changes in the level of interest rates or other market factors.
This risk is in addition to the risk of decline in the value of the Trust's
other assets. Although the Trust generally will enter into forward commitments
with the intention of acquiring Municipal Obligations for its portfolio, the
Trust may dispose of a commitment prior to settlement if the Advisor deems it
appropriate to do so. The Trust may realize capital gain or loss upon the sale
of forward commitments. Any such gains, if not offset by net realized capital
losses, will be distributed to shareholders in taxable distributions.

REPURCHASE AGREEMENTS

     The Trust may purchase U.S. Government securities and concurrently enter
into so-called "repurchase agreements" with the seller, usually a bank or
broker-dealer, whereby the seller agrees to repurchase such securities at the
Trust's cost plus interest within a specified time (normally one day). While
repurchase agreements involve risks not associated with direct investments in
U.S. Government securities, the Trust will follow procedures designed to
minimize such risks. These procedures include effecting repurchase transactions
only with the member banks of the Federal Reserve System and registered
broker-dealers having creditworthiness substantially equivalent to that of the
issuers of investment grade debt securities. In addition, the Trust's repurchase
agreements will always be at least equal to the repurchase price, including any
accrued interest earned on the repurchase agreement. In the event of a default
or bankruptcy by a seller, the Trust will seek to liquidate such collateral.
However, the exercise of the Trust's right to liquidate such collateral could
involve costs or delays and, to the extent that proceeds from any sale upon a
default of the obligation to repurchase were less than the repurchase price, the
Trust could suffer a loss.

ZERO COUPON SECURITIES (ZEROS)

     The Trust may invest in zero coupon securities, which are securities issued
at a significant discount from face value and pay interest only at maturity
rather than at intervals during the life of the security and in certificates
representing undivided interests in the interest or principal of mortgage-backed
securities (interest only/principal only), which tend to be more volatile than
other types of securities. The Trust will accrue and distribute income from zero
coupon and stripped securities and certificates on a current basis and may have
to sell securities to generate cash for distributions.

TEMPORARY AND DEFENSIVE INVESTMENTS

     A portion of the Trust's assets will be held in cash or invested in
short-term securities for day-to-day operating purposes. It is the intention of
the Trust that short-term investments will also be in tax-exempt securities.
However, if suitable short-term tax-exempt securities are not available or if
short-term tax-exempt securities are available only on a when-issued basis, the
Trust may invest up to 20% of its assets in short-term obligations of the U.S.
Government or in repurchase agreements, or short-term notes and obligations
rated A-1+, of banks that have or whose parent holding companies have long-term
debt ratings of AAA or of corporations with long-term debt ratings of AAA, the
interest on all of which is not exempt from federal income taxes.
Notwithstanding the foregoing, the Trust may temporarily invest more than 20% of
its assets in such taxable obligations for defensive purposes. The ability of
the Trust to invest in securities other than tax-exempt securities (as well as
its ability to enter into repurchase agreements) is limited, however, by a
requirement of the Internal Revenue Code that at least 50% of its total assets
be invested in tax-exempt securities at the end of each quarter in order to pass
through to shareholders the federal income tax exemption for dividends derived
from net investment income on tax-exempt securities. See "Tax Matters -- Federal
Taxation of Shareholders."

                                       19
<PAGE>   25

                            MANAGEMENT OF THE TRUST

TRUSTEES AND OFFICERS

     The Board of Trustees is responsible for the general supervision of the
Trust, including general supervision of the duties performed by the Advisor
under its Management Agreement with the Trust. There are 13 trustees of the
Trust, five of whom are "interested persons" (as defined in the Investment
Company Act of 1940) of the Trust, the Advisor or the Underwriter. The names and
addresses of the trustees and officers of the Trust and their principal
occupations and other affiliations during the past five years are set forth
under "Management of the Trust" in the Statement of Additional Information.

THE ADVISOR

     The Advisor is Colonial Management Associates, Inc., a Massachusetts
corporation having its principal offices at One Financial Center, Boston,
Massachusetts 02111. The Advisor is a wholly owned subsidiary of Liberty Funds
Group LLC ("Liberty Funds Group") and both Liberty Funds Group and the Advisor
are indirect, majority-owned subsidiaries of Liberty Mutual Insurance Company
("Liberty"), an underwriter of workers' compensation insurance and a property
and casualty insurer in the United States. The Advisor has been an investment
advisor since 1931. As of the date of this Prospectus, the Advisor serves as
investment advisor or sub-advisor for 35 open-end and 5 closed-end management
investment companies and manages over $16 billion in assets.

     The Advisor's investment advisory business is managed together with the
mutual funds and institutional investment advisory businesses of its affiliate,
Stein Roe & Farnham Incorporated ("Stein Roe"), by a combined management team of
employees from both companies. Stein Roe also shares personnel, facilities and
systems with the Advisor that may be used in providing administrative services
to the Trust. Both the Advisor and Stein Roe are subsidiaries of Liberty
Financial Companies, Inc.

     William C. Loring, a Senior Vice President of the Advisor, has managed the
Trust since 1993. Mr. Loring has managed various other tax-exempt funds for the
Advisor since 1986.

MANAGEMENT AGREEMENT

     The Management Agreement between the Advisor and the Trust (the "Management
Agreement") provides that, subject to the direction of the Board of Trustees of
the Trust and the applicable provisions of the Investment Company Act of 1940,
the Advisor is responsible for the actual management of the Trust's portfolio.
The responsibility for making decisions to buy, sell or hold a particular
investment rests with the Advisor, subject to review by the Board of Trustees of
the Trust and compliance with the applicable provisions of the Investment
Company Act of 1940.

     The Advisor provides the Trust with accounting, bookkeeping and pricing
services and other services and office facilities (the expenses of which are
borne by the Trust as specified below), except to the extent these services are
provided by an administrator or an accounting firm hired by the Trust.

     Under the Management Agreement with the Trust, the Advisor receives a
monthly advisory fee at the annual rate of 0.65% of the average weekly net
assets of the Trust. Since the Advisor's fee is based on the average weekly net
assets of the Trust, the Advisor will benefit from the increase in the Trust's
net assets resulting from the offering of the shares of Municipal Preferred. It
is not possible to state precisely the amount of additional compensation the
Advisor will receive as a result of the offering because the proceeds of the
offering will be invested in additional portfolio securities which will
fluctuate in value. However, based on the estimated proceeds from the offering,
assuming all the shares of Municipal Preferred offered hereby are purchased, the
Advisor would receive additional annual advisory fees of approximately $384,220
as a result of the increase in average weekly net assets under management over
the Trust's current net assets under management, assuming no fluctuations in the
value of Trust portfolio securities.

     The Advisor places all orders for the purchase and sale of portfolio
securities. In selecting broker-dealers, the Advisor may consider research and
brokerage services furnished by such broker-dealers to the

                                       20
<PAGE>   26

Advisor and its affiliates. In recognition of the research and brokerage
services provided, the Advisor may cause the Trust to pay the selected
broker-dealer a higher commission than would have been charged by another
broker-dealer not providing such services. Subject to seeking best execution,
the Advisor may consider sales of shares of certain other funds distributed by
affiliates of Liberty in selecting broker-dealers for portfolio security
transactions.

                                       21
<PAGE>   27

                                  THE AUCTION

SUMMARY OF AUCTION PROCEDURES

     The following is a brief summary of the auction procedures. They are
described in more detail in the Statement of Additional Information. The auction
procedures are complicated, and there are exceptions to these procedures. Many
of the terms in this section have a special meaning. Any terms in this section
not defined have the meaning assigned to them in the Statement of Additional
Information. See the Statement of Additional Information for a full description
of the auction procedures. The auction determines the Applicable Rate (the
dividend rate) for Municipal Preferred shares, but the Applicable Rate will not
be higher than the Maximum Rate. See "Description of Municipal
Preferred -- Dividends and Dividend Periods." You also may buy or sell shares of
Municipal Preferred in the auction.

     If you own shares of Municipal Preferred, you may instruct, orally or in
writing, a Broker-Dealer or a broker-dealer that has entered into an agreement
with a Broker-Dealer, to enter an order in the auction. For purposes of this
discussion regarding the auction procedures, a "Broker-Dealer" is any
broker-dealer, commercial bank or other entity permitted by law to perform the
functions required of a Broker-Dealer that is a member of, or a participant in,
The Depository Trust Company or is an affiliate of such member or participant,
has been selected by the Trust and has entered into an agreement with the Trust
and the auction agent to follow the auction procedures. Existing Municipal
Preferred shareholders can enter three kinds of orders regarding their Municipal
Preferred shares: sell, bid, and hold.

     - If you enter a sell order, you indicate that you want to sell shares of
       Municipal Preferred at $25,000 per share, no matter what the next rate
       period's Applicable Rate will be.

     - If you enter a bid (or "hold at a rate") order, you indicate that you
       want to sell shares of Municipal Preferred only if the next rate period's
       Applicable Rate is less than the rate you specify.

     - If you enter a hold order, you indicate that you want to continue to own
       shares of Municipal Preferred, no matter what the next rate period's
       Applicable Rate will be.

     You may enter different types of orders for your Municipal Preferred
shares, as well as orders for additional Municipal Preferred shares. All orders
must be for whole shares. All orders you submit are irrevocable. There are a
fixed number of Municipal Preferred shares, and the Applicable Rate likely will
vary from auction to auction depending on the number of bidders, the number of
shares the bidders seek to buy, and general economic conditions including
current interest rates. If you own Municipal Preferred shares and submit a bid
higher than the Maximum Rate, your bid will be treated as a sell order. If you
do not enter an order, the Broker-Dealer will assume that you want to continue
to hold Municipal Preferred shares, but if you fail to submit an order and the
rate period is longer than 28 days, the Broker-Dealer will treat your failure to
submit a bid as a sell order.

     If you do not currently own shares of Municipal Preferred, or want to buy
more shares, you may instruct a Broker-Dealer, or a broker-dealer that has
entered into an agreement with a Broker-Dealer, to enter a bid order to buy
shares in an auction at $25,000 per share at or above a specified dividend rate.
If your bid specifies a rate higher than the Maximum Rate, your order will not
be accepted.

     Broker-Dealers will submit orders from existing and potential shareholders
to the auction agent. Neither the Trust nor the auction agent will be
responsible for a Broker-Dealer's failure to submit orders from existing
shareholders and potential shareholders. A Broker-Dealer's failure to submit
orders for Municipal Preferred shares held by it or its customers will be
treated in the same manner as a shareholder's failure to submit an order to the
Broker-Dealer. A Broker-Dealer may submit orders to the auction agent for its
own account provided it is not an affiliate of the Trust.

     The auction agent after each auction for shares of Municipal Preferred will
pay to each Broker-Dealer, from funds provided by the Trust, a service charge at
the annual rate of 1/4 of 1% in the case of any auction immediately preceding a
rate period of less than one year, or a percentage agreed to by the

                                       22
<PAGE>   28

Trust and the Broker-Dealers, in the case of any auction immediately preceding a
rate period of one year or longer, of the purchase price of shares of Municipal
Preferred placed by the Broker-Dealers at the auction.

     If the number of Municipal Preferred shares subject to bid orders with a
dividend rate equal to or lower than the Maximum Rate for shares of Municipal
Preferred is at least equal to the number of Municipal Preferred shares subject
to sell orders, then the Applicable Rate for the next rate period will be the
lowest rate submitted which, taking into account that rate and all lower rates
submitted in order from existing and potential shareholders, would result in
existing and potential shareholders owning all the Municipal Preferred shares
available for purchase in the auction.

     If the number of Municipal Preferred shares subject to bid orders with a
dividend rate equal to or lower than the Maximum Rate for shares of Municipal
Preferred is less than the number of Municipal Preferred shares subject to sell
orders, then the auction is considered to be a failed auction, and the dividend
rate will be the Maximum Rate. In that event, existing shareholders that have
submitted sell orders (or are treated as having submitted sell orders) may not
be able to sell any or all of the shares for which they submitted sell orders.

     The auction agent will not accept a bid above the Maximum Rate. The purpose
of the Maximum Rate is to place an upper limit on Municipal Preferred dividends
and in so doing to help protect the earnings available to pay common share
dividends, and to serve as the Applicable Rate in the event of a failed auction
(that is, an auction where there are more Municipal Preferred shares offered for
sale than there are buyers for those shares).

     If Broker-Dealers submit or are deemed to submit hold orders for all
outstanding shares of Municipal Preferred, that is considered an "all hold"
auction and the Applicable Rate for the next rate period will be the All Hold
Order Rate. The All Hold Order Rate is the lesser of the Standard & Poor's Kenny
30-day High Grade Index (if the rate period is less than 183 days) or the
product of:

          (1)(a) the "AA" Composite Commercial Paper Rate on the auction date
     for that rate period if the rate period is less than 183 days, (b) the
     Treasury Bill Rate on the auction date for that rate period if the rate
     period is greater than 182 days but less than 365 days, or (c) the Treasury
     Note Rate on the auction date for that rate period if the rate period is
     greater than 364 days; and

          (2) 1 minus the greater of the maximum marginal regular federal
     individual income tax rate applicable to ordinary income or the maximum
     marginal regular federal corporate income tax rate.

However, if the Trust has notified the auction agent that it intends to allocate
any net capital gains or other federally taxable income to shares of Municipal
Preferred for that rate period, the All Hold Order Rate may be adjusted as set
forth in the Statement of Additional Information.

     The auction procedures include a pro rata allocation of shares for purchase
and sale. This allocation process may result in an existing shareholder
continuing to hold or selling, or a potential shareholder buying, fewer shares
than the number of shares in its order. If this happens, Broker-Dealers will be
required to make appropriate pro rata allocations among their customers.

     Settlement of purchases and sales will be made on the next business day
(which also is a dividend payment date) after the auction date through The
Depository Trust Company. Purchasers will pay for their shares through
Broker-Dealers in same-day funds to The Depository Trust Company against
delivery to the Broker-Dealers. The Depository Trust Company will make payment
to the sellers' Broker-Dealers in accordance with its normal procedures, which
require Broker-Dealers to make payment against delivery in same-day funds.
Throughout this Prospectus, a business day is a day on which the New York Stock
Exchange is open for trading, and which is neither a Saturday, Sunday nor any
other day on which banks in New York, New York are authorized by law to close.

     If the Trust plans to include any net capital gains or other federal
taxable income in a Municipal Preferred dividend, it generally will notify the
auction agent of the amount to be included at least a week

                                       23
<PAGE>   29

before the next dividend payment date for the rate period in which taxable
income will be included in the dividend. The auction agent will notify
Broker-Dealers, who in turn will notify their customers.

     The first auction for shares of Municipal Preferred will be held on Monday,
            , 1999, the business day preceding the dividend payment date for the
initial rate period. Thereafter, except during special rate periods, auctions
will normally be held every Monday, and each subsequent rate period will
normally begin on the following Tuesday.

     The following is a simplified example of how a typical auction works.
Assume that the Trust has 1,000 outstanding shares of Municipal Preferred, and
three current shareholders. The three current shareholders and three potential
shareholders submit orders through Broker-Dealers at the auction:

<TABLE>
<S>                      <C>                             <C>
Current Shareholder A    Owns 500 shares, wants to sell  Bid order of 3.5% rate for all
                         all 500 shares if auction rate  500 shares
                         is less than 3.5%
Current Shareholder B    Owns 300 shares, wants to hold  Hold order -- will take the
                                                         auction rate
Current Shareholder C    Owns 200 shares, wants to sell  Bid order of 3.3% rate for all
                         all 200 shares if auction rate  200 shares
                         is less than 3.3%
Potential Shareholder D  Wants to buy 200 shares         Places order to buy at or
                                                         above 3.4%
Potential Shareholder E  Wants to buy 300 shares         Places order to buy at or
                                                         above 3.3%
Potential Shareholder F  Wants to buy 200 shares         Places order to buy at or
                                                         above 3.5%
</TABLE>

     The lowest dividend rate that will result in all 1,000 shares of Municipal
Preferred continuing to be held is 3.4% (the offer by D). Therefore, the
Applicable Rate will be 3.4%. Current shareholders B and C will continue to own
their shares. Current shareholder A will sell its shares because A's dividend
rate bid was higher than the Applicable Rate. Potential shareholder D will buy
200 shares and Potential shareholder E will buy 300 shares, both because their
bid rates were at or below the Applicable Rate. Potential shareholder F will not
buy any shares because its bid rate was above the Applicable Rate.

SECONDARY MARKET TRADING AND TRANSFER OF MUNICIPAL PREFERRED

     The Broker-Dealers (including the Underwriter) expect, but are not
obligated, to maintain a secondary trading market in shares of Municipal
Preferred outside of auctions. There can be no assurance that a secondary
trading market for shares of Municipal Preferred will develop or, if it does
develop, that it will provide owners with liquidity of investment. The shares of
Municipal Preferred will not be registered on any stock exchange or on the
National Association of Securities Dealers Automated Quotations System.
Investors who purchase shares of Municipal Preferred in an auction for a special
rate period should note that because the dividend rate on such shares will be
fixed for the length of that rate period, the value of such shares may fluctuate
in response to changes in interest rates, and may be more or less than their
original cost if sold on the open market in advance of the next auction thereof,
depending on market conditions.

     An existing shareholder may sell, transfer, or otherwise dispose of shares
of Municipal Preferred only in whole shares and only (1) pursuant to a bid or
sell order placed with the auction agent in accordance with the auction
procedures, (2) to a Broker-Dealer or (3) to such other persons as may be
permitted by the Trust; provided, however, that (a) a sale, transfer or other
disposition of shares of Municipal Preferred from a customer of a Broker-Dealer
who is listed on the records of that Broker-Dealer as the holder of such shares
to that Broker-Dealer or another customer of that Broker-Dealer shall not be
deemed to be a sale, transfer or other disposition for purposes of the foregoing
if such Broker-Dealer remains the existing

                                       24
<PAGE>   30

shareholder of the shares so sold, transferred or disposed of immediately after
such sale, transfer or disposition and (b) in the case of all transfers other
than pursuant to auctions, the Broker-Dealer (or other person, if permitted by
the Trust) to whom such transfer is made shall advise the auction agent of such
transfer.

                        DETERMINATION OF NET ASSET VALUE

     Net asset value of the Trust will be determined no less frequently than as
of the close of regular trading on the New York Stock Exchange (generally 4:00
p.m. Eastern time) on the last business day of each week (generally Friday), and
at such other times as the Trust may authorize. The net asset value of the Trust
equals the value of the Trust's assets less the Trust's liabilities. Portfolio
securities for which market quotations are readily available are valued at
current market value. Short-term investments maturing in 60 days or less are
valued at amortized cost when the Advisor determines, pursuant to procedures
adopted by the Board of Trustees, that such cost approximates current market
value. All other securities and assets are valued at their fair value following
procedures adopted by the Board of Trustees.

                                       25
<PAGE>   31

                       DESCRIPTION OF MUNICIPAL PREFERRED

GENERAL

     The following is a brief description of the terms of the shares of
Municipal Preferred. For the complete terms of the Municipal Preferred, you may
refer to the Trust's Amended and Restated By-Laws (the "By-Laws") filed as an
Exhibit to the Trust's registration statement on Form N-2. The Agreement and
Declaration of Trust of the Trust (the "Declaration") provides that the Trust
may authorize separate classes of shares of beneficial interest. The By-Laws of
the Trust will, at the time they are amended and restated, authorize the
issuance of 2,400 preferred shares of beneficial interest, no par value per
share, which may be issued from time to time in such series and with such
designations, preferences and other rights, qualifications, limitations and
restrictions as are determined in a resolution of the Board of Trustees
("Preferred Shares"). The By-Laws authorize the issuance of up to 2,400 shares
of Series M Municipal Preferred. Shares of Municipal Preferred carry one vote
per share. Shares of Municipal Preferred will, when issued, be fully paid and,
subject to matters discussed in "Shareholder Liability" in the Statement of
Additional Information, nonassessable, and will have no pre-emptive or
conversion rights or rights to cumulative voting.

DIVIDENDS AND DIVIDEND PERIODS

     GENERAL.  The following is a general description of dividends and rate
periods. The calculation of dividends and rate periods is complex and subject to
special rules. See the Statement of Additional Information for a description of
the terms used in this section and a more detailed discussion of this topic.

     The dividend rate for the initial rate period for Municipal Preferred
shares will be the rate set out on the cover of the Prospectus. For subsequent
rate periods, Municipal Preferred shares will pay dividends based on a rate set
at the auction, normally held weekly, but the rate set at the auction will not
exceed the Maximum Rate. Rate periods generally will be seven days, and a rate
period will begin on the first business day after the auction. In most
instances, dividends are also paid weekly, on the day following the end of the
rate period. The Trust, subject to some limitations, may change the length of
rate periods, designating them as "special rate periods." See "Description of
Municipal Preferred -- Designation of Special Rate Periods."

     DIVIDEND PAYMENTS.  Except as provided below, the dividend payment date
will be the day after the rate period ends. If the Tuesday on which your shares
normally pay dividends is not a business day, then your dividends will be paid
on the first business day that falls after that Tuesday. The Trust may specify
different dividend payment dates in respect of any special rate period of more
than 28 rate period days. See "Description of Municipal Preferred -- Designation
of Special Rate Periods" for a discussion of payment dates for a special rate
period.

     Dividends on Municipal Preferred shares will be paid on the dividend
payment date to holders of record as their names appear on the Trust's record
books, on the business day next preceding the dividend payment date. If
dividends are in arrears, they may be declared and paid at any time, to holders
of record as their names appear on the Trust's record books, on that date, not
more than 15 days before the payment date, as the Trust's Board of Trustees may
fix.

     The Depository Trust Company, in accordance with its current procedures, is
expected to credit on each dividend payment date dividends received from the
Trust to the accounts of its agent members, in next-day funds. "Agent members"
are Broker-Dealers or broker-dealers that are members of or participants in The
Depository Trust Company who act on behalf of Municipal Preferred shareholders.
Agent members, in turn, are expected to distribute dividend payments to the
person for whom they are acting as agents. The initial Broker-Dealer, Salomon
Smith Barney Inc., however, has indicated to the Trust that it or the agent
member it designates will make these dividend payments available in same-day
funds, rather than next-day funds, on each dividend payment date to customers
that use that Broker-Dealer or its designee as its agent member. A Municipal
Preferred shareholder that does not use an initial Broker-Dealer, or one of its
affiliates, should contact his or her Broker-Dealer or another broker-dealer
                                       26
<PAGE>   32

that is an agent member of The Depository Trust Company to determine whether it
will make dividend payments available to the shareholder in same-day or next-day
funds. If a Broker-Dealer or a broker-dealer that is an agent member of The
Depository Trust Company does not make dividends available to Municipal
Preferred shareholders in same-day funds, these shareholders will not have funds
available until the next business day.

     DIVIDEND RATE SET AT AUCTION.  Municipal Preferred shares pay dividends
based on a rate set at auction. The auction usually is held weekly, but may be
held less frequently. The auction sets the dividend rate, and Municipal
Preferred shares may be bought and sold at the auction. Bankers Trust Company,
the auction agent, reviews orders from Broker-Dealers on behalf of existing
shareholders that wish to sell, hold at the auction rate, or hold only at a
specified rate, and on behalf of potential shareholders that wish to buy
Municipal Preferred shares. The auction agent then determines the lowest
dividend rate that will result in all of the outstanding Municipal Preferred
shares continuing to be held. The shares in this offering will trade at auction
starting in the week following this offering. See "The Auction."

     DETERMINATION OF DIVIDEND RATES.  The Trust computes the dividends per
share by multiplying the dividend rate determined at the auction by a fraction,
the numerator of which normally is seven and the denominator of which normally
is 365. If the Trust has designated a special rate period, then the numerator is
the number of days in the rate period, and the denominator is 360. In either
case, this rate is then multiplied by $25,000 to arrive at the dividend per
share. The numerator may be different if the rate period includes a holiday.

     If an auction for any subsequent rate period of Municipal Preferred shares
is not held for any reason other than as described below, the dividend rate on
those shares will be the Maximum Rate on the auction date for that subsequent
rate period.

     MAXIMUM RATE.  The dividend rate that results from an auction for Municipal
Preferred will not be greater than the Maximum Rate, which is:

          (a) for any auction date which is not the auction date immediately
     prior to the first day of any proposed special rate period, the product of
     (i) the Reference Rate on that auction date for the next rate period of
     Municipal Preferred shares and (ii) the Rate Multiple on that auction date,
     unless Municipal Preferred shares have or had a special rate period (other
     than a special rate period of 28 rate period days or fewer) and an auction
     at which sufficient clearing bids existed has not yet occurred after that
     special rate period for a minimum rate period (seven days) of Municipal
     Preferred shares, in which case the Maximum Rate will be the higher of:

             (A) the dividend rate on Municipal Preferred shares for the
        then-ending rate period, and

             (B) the product of (x) the higher of (I) the Reference Rate on that
        auction date for a rate period equal in length to the then-ending rate
        period of Municipal Preferred shares, if the then-ending rate period was
        364 rate period days or fewer, or the Treasury Note Rate on that auction
        date for a rate period equal in length to the then-ending rate period of
        Municipal Preferred shares, if the then-ending rate period was more than
        364 rate period days, and (II) the Reference Rate on that auction date
        for a rate period equal in length to that special rate period of
        Municipal Preferred shares, if that special rate period was 364 rate
        period days or fewer, or the Treasury Note Rate on that auction date for
        a rate period equal in length to that special rate period, if that
        special rate period was more than 364 rate period days and (y) the Rate
        Multiple on that auction date; or

          (b) for any auction date that is the auction date immediately prior to
     the first day of any proposed special rate period, the product of (i) the
     highest of (x) the Reference Rate on that auction date for a rate period
     equal in length to the then-ending rate period of Municipal Preferred
     shares, if the then-ending rate period was 364 rate period days or fewer,
     or the Treasury Note Rate on that auction date for a rate period equal in
     length to the then-ending rate period of Municipal Preferred shares, if the
     then-ending rate period was more than 364 rate period days, (y) the
     Reference Rate on that auction date for the special rate period for which
     the auction is being held if that special rate
                                       27
<PAGE>   33

     period is 364 rate period days or fewer or the Treasury Note Rate on that
     auction date for the special rate period for which the auction is being
     held if that special rate period is more than 364 rate period days, and (z)
     the Reference Rate on that auction date for minimum rate periods and (ii)
     the Rate Multiple on that auction date.

     The Reference Rate is (i) the higher of the Taxable Equivalent of the
Short-Term Municipal Bond Rate and the "AA" Composite Commercial Paper Rate in
the case of minimum rate periods and special rate periods of 28 rate period days
or fewer; (ii) the "AA" Composite Commercial Paper Rate in the case of special
rate periods of more than 28 rate period days but fewer than 183 rate period
days; and (iii) the Treasury Bill Rate in the case of special rate periods of
more than 182 rate period days but fewer than 365 rate period days.

     The Taxable Equivalent of the Short-Term Municipal Bond Rate, "AA"
Composite Commercial Paper Rate, Treasury Bill Rate and Treasury Note Rate will
be the rates announced on the auction date for the business day immediately
before the auction date. See the Statement of Additional Information for the
definitions of these rates. The "Rate Multiple" will be a percentage, determined
as set out below, based on the prevailing rating of Municipal Preferred shares
in effect at the close of business on the business day immediately before the
auction date. See the Statement of Additional Information for a description of
"prevailing rating."

<TABLE>
<CAPTION>
PREVAILING RATING                                             PERCENTAGE
- -----------------                                             ----------
<S>                                                           <C>
"aa3"/AA- or higher.........................................     110%
"a3"/A-.....................................................     125%
"baa3"/BBB-.................................................     150%
"ba3"/BB-...................................................     200%
Below "ba3"/BB-.............................................     250%
</TABLE>

     If the Trust has notified the auction agent that it intends to allocate
federal taxable income to Municipal Preferred shares before the auction
establishing the Applicable Rate for those shares, the applicable percentage in
the table above will be divided by the quantity 1 minus the greater of the
maximum marginal regular federal individual income tax rate applicable to
ordinary income or the maximum marginal regular federal corporate income tax
rate. If the ratings for shares of Municipal Preferred are split between two of
the foregoing categories, the lower rating will determine the prevailing rating.
If only one rating agency is rating Municipal Preferred shares, that agency's
rating will be the prevailing rating.

     The Trust may only pay dividends when and if the Trust's Board of Trustees
declares dividends out of monies legally available for this purpose, at the
applicable rate per year for this purpose and no more (except as described under
"Description of Municipal Preferred -- Dividends and Dividend Periods --
Gross-Up Payments"), payable on the dates determined as described below. If the
Trust does not pay a dividend when the Board declares it, then that dividend
will be added to dividends payable on those Municipal Preferred shares in the
future.

     EFFECT OF FAILURE TO PAY DIVIDENDS IN A TIMELY MANNER.  If the Trust fails
to pay, in a timely manner, the auction agent the full amount of any dividend
on, or the redemption price of, any Municipal Preferred shares during any rate
period (other than any special rate period of more than 364 rate period days or
any rate period succeeding any special rate period of more than 364 rate period
days during which a failure occurred that has not been cured), but the Trust
cures the failure and pays any late charge before 12:00 noon Eastern time on the
third business day following the date the failure occurred, no auction will be
held for Municipal Preferred shares for the first subsequent rate period
thereafter, and the dividend rate for Municipal Preferred shares for that
subsequent rate period will be the Maximum Rate on the auction date for that
subsequent rate period.

     If the Trust fails to pay, in a timely manner, the auction agent the full
amount of any dividend on, or the redemption price of, any Municipal Preferred
shares during any rate period thereof (other than any

                                       28
<PAGE>   34

special rate period of more than 364 rate period days or any rate period
succeeding any special rate period of more than 364 rate period days during
which a failure occurred that has not been cured), and the Trust does not cure
the failure and pay any late charge before 12:00 noon Eastern time on the third
business day next succeeding the date on which the failure occurred, no auction
will be held for Municipal Preferred shares for the first subsequent rate period
thereafter (or for any rate period thereafter, to and including the rate period
during which the failure is cured and the late charge is paid) (the late charge
is to be paid only in the event Moody's is rating the shares at the time the
Trust cures the failure), and the dividend rate for shares of that series for
each such subsequent rate period will be an annual rate equal to the Maximum
Rate on the auction date for that subsequent rate period (but with the
prevailing rating for Municipal Preferred, for purposes of determining the
Maximum Rate, being "Below 'ba3'/BB-").

     If the Trust fails to pay, in a timely manner, the auction agent the full
amount of any dividend on, or the redemption price of, any shares of Municipal
Preferred during a special rate period of more than 364 rate period days, or
during any rate period succeeding any special rate period of more than 364 rate
period days during which a failure occurred that has not been cured, and the
Trust does not cure the failure and pay a late charge, no auction will be held
for Municipal Preferred shares for that subsequent rate period (or for any rate
period thereafter, to and including the rate period during which the failure is
cured and the late charge paid) (the late charge is to be paid only in the event
Moody's is rating Municipal Preferred shares at the time the Trust cures the
failure), and the dividend rate for Municipal Preferred shares for each such
subsequent rate period will be an annual rate equal to the Maximum Rate on the
auction date for each such subsequent rate period (but with the prevailing
rating for Municipal Preferred, for purposes of determining the Maximum Rate,
being "Below 'ba3'/BB-").

     The Trust cures a failure to pay dividends on shares of Municipal Preferred
for any rate period, within the respective time periods described in the
By-Laws, by paying the auction agent all accumulated and unpaid dividends on the
Municipal Preferred shares.

     GROSS-UP PAYMENTS.  Holders of shares of Municipal Preferred shall be
entitled to receive, when, as and if declared by the Board of Trustees, out of
funds legally available therefor in accordance with the Declaration, the By-Laws
and applicable law, dividends in an amount equal to the aggregate Gross-up
Payment in accordance with the following:

     If, in the case of any minimum rate period or any special rate period of 28
rate period days or fewer, the Trust allocates any net capital gain or other
income taxable for federal income tax purposes to a dividend paid on shares of
Municipal Preferred without having given advance notice thereof to the auction
agent as described above under "The Auction -- Auction Procedures" (a "Taxable
Allocation") solely by reason of the fact that such allocation is made
retroactively as a result of the redemption of all or a portion of the
outstanding shares of Municipal Preferred or the liquidation of the Trust, the
Trust will, prior to the end of the calendar year in which such dividend was
paid, provide notice thereof to the auction agent and direct the Trust's
dividend disbursing agent to send such notice with a Gross-up Payment to each
holder of shares (initially Cede & Co., as nominee of The Depository Trust
Company) that was entitled to such dividend payment with respect to shares of
Municipal Preferred during such calendar year at such holder's address as the
same appears or last appeared on the record books of the Trust.

     If, in the case of any special rate period of more than 28 rate period
days, the Trust makes a Taxable Allocation to a dividend paid on shares of
Municipal Preferred, the Trust shall, prior to the end of the calendar year in
which such dividend was paid, provide notice thereof to the auction agent and
direct the Trust's dividend disbursing agent to send such notice with a Gross-up
Payment to each holder of such shares that was entitled to such dividend payment
during such calendar year at such holder's address as the same appears or last
appeared on the record books of the Trust.

     The Trust shall not be required to make Gross-up Payments with respect to
any net capital gain or other taxable income determined by the Internal Revenue
Service to be allocable in a manner different from that allocated by the Trust.

                                       29
<PAGE>   35

     A "Gross-up Payment" in respect of any dividend means payment to a holder
of shares of Municipal Preferred of an amount which, giving effect to the
Taxable Allocations made with respect to such dividend, would cause such
holder's after-tax returns (taking into account both the Taxable Allocations and
the Gross-up Payment) to be equal to the after-tax return the holder would have
received if no such Taxable Allocations had occurred. Such Gross-up Payment
shall be calculated: (i) without consideration being given to the time value of
money; (ii) assuming that no holder of shares of Municipal Preferred is subject
to the federal alternative minimum tax with respect to dividends received from
the Trust; and (iii) assuming that each holder of shares of Municipal Preferred
is taxable at the maximum marginal regular federal individual income tax rate
applicable to ordinary income or net capital gain, as applicable, or the maximum
marginal regular federal corporate income tax rate applicable to ordinary income
or net capital gain, as applicable, whichever is greater, in effect at the time
such Gross-up Payment is made.

     RESTRICTIONS ON DIVIDENDS AND OTHER DISTRIBUTIONS.  When the Trust has any
Municipal Preferred shares outstanding, the Trust may not pay any dividend or
distribution (other than a dividend or distribution paid in shares of a series
of, or in options, warrants or rights to subscribe for or purchase, Common
Shares) in respect of Common Shares or call for redemption, redeem, purchase or
otherwise acquire for consideration any Common Shares (except by conversion into
or exchange for shares of the Trust ranking junior to the shares of Municipal
Preferred as to the payment of dividends and the distribution of assets upon
liquidation), unless (1) it has paid all cumulative dividends on Municipal
Preferred shares; (2) it has redeemed any Municipal Preferred shares that it has
called for mandatory redemption; and (3) after paying the dividend, the Trust
meets Moody's and Standard & Poor's asset coverage requirements described under
"Rating Agency Guidelines."

     Except as set forth in the next sentence, no dividends shall be declared or
paid or set apart for payment on any class or series of shares of beneficial
interest of the Trust ranking, as to the payment of dividends, on a parity with
shares of Municipal Preferred for any period unless full cumulative dividends
have been or contemporaneously are declared and paid on the shares of each
series of Municipal Preferred through their most recent dividend payment date.
When dividends are not paid in full upon the shares of a series of Municipal
Preferred through their most recent dividend payment date or upon any other
class or series of shares ranking on a parity as to the payment of dividends
with shares of Municipal Preferred through their most recent respective dividend
payment dates, all dividends declared upon shares of Municipal Preferred and any
other such class or series of shares ranking on a parity as to the payment of
dividends with shares of Municipal Preferred shall be declared pro rata so that
the amount of dividends declared per share on shares of each series of Municipal
Preferred and such other class or series of shares shall in all cases bear to
each other the same ratio that accumulated dividends per share on the shares of
each series of Municipal Preferred and such other class or series of shares bear
to each other.

DESIGNATION OF SPECIAL RATE PERIODS

     The Trust may instruct the auction agent to hold auctions and pay dividends
less frequently than weekly. The Trust may do this if, for example, the Trust
expects that short-term rates might increase or market conditions otherwise
change, in an effort to optimize the effect of the Trust's leverage on common
shareholders. If the Trust decides to use a special rate period, the special
rate period will consist of a number of days evenly divisible by seven and not
more than 1,820 days (approximately five years), subject to adjustments. The
Trust does not currently expect to hold auctions and pay dividends less
frequently than weekly in the near future. If the Trust designates a special
rate period, changes in interest rates could affect the price you would receive
if you sold your shares in the secondary market.

     Before the Trust designates a special rate period: (1) at least 20 (or such
lesser number of days as may be agreed to from time to time by the auction
agent) and not more than 30 days before the first day of the proposed special
rate period, the Trust must publish a notice of its intention to designate a
special rate period in a newspaper circulated to the financial community in New
York, and must mail a notice to Municipal Preferred shareholders of its intent
to designate a special rate period; (2) the Trust must inform the auction agent
by 11:00 a.m. Eastern time on the second business day before the first day of
the proposed special rate period; (3) an auction must have been held in the rate
period before the special rate
                                       30
<PAGE>   36

period, and in that auction sufficient clearing bids existed; and (4) the Trust
must deposit the redemption price with the auction agent for any shares it has
decided to redeem.

     If the Trust has designated a special rate period of 14, 21, or 28 days,
then dividends generally will be paid on the same day of the week on which
dividends are paid in a seven-day rate period, but will be the second, third, or
fourth such day of the week, respectively, after the first day of the special
rate period. Thus, the dividend payment date for a special rate period of 14,
21, or 28 days generally will be the second, third, or fourth Tuesday,
respectively, after the first day of the special rate period. The dividend
payment date for a special rate period of more than 28 days will be set out in
the notice designating a special rate period. The dividend payment date will be
a business day, and the last dividend payment date for any special rate period
will be the business day immediately following the last day of the special rate
period. After any special rate period, the rate periods normally will be seven
days, and dividends on Municipal Preferred shares will be payable, except as
described elsewhere in this Prospectus or the Statement of Additional
Information, on each succeeding regular dividend payment date, but the Trust may
further designate any subsequent rate period as a special rate period.

VOTING RIGHTS

     In addition to voting rights described below under "Certain Provisions in
the Agreement and Declaration of Trust" and in the Statement of Additional
Information under "Investment Objectives and Policies -- Fundamental Investment
Policies," holders of shares of Municipal Preferred, voting as a separate class,
are entitled to elect (1) two trustees of the Trust at all times and (2) a
majority of the trustees if at any time dividends on shares of Municipal
Preferred shall be unpaid in an amount equal to two years' dividends thereon,
and to continue to be so represented until all dividends in arrears shall have
been paid or otherwise provided for. In all other cases, trustees shall be
elected by holders of Common Shares and Preferred Shares (including shares of
Municipal Preferred), voting together as a single class.

     Subject to the voting rights described above and except as otherwise
specified under "Certain Provisions in the Agreement and Declaration of Trust,"
the Trust may not, among other things, without the approval of the holders of a
"majority of the outstanding" shares of Municipal Preferred, voting as a
separate class, approve any plan of reorganization adversely affecting shares of
Municipal Preferred. In addition, the Trust may not, without the affirmative
vote of the holders of at least a majority of the shares of Municipal Preferred
outstanding at the time, voting as a separate class: (a) authorize, create or
issue additional shares of Municipal Preferred or classes or series of Preferred
Shares ranking prior to or on a parity with shares of Municipal Preferred with
respect to the payment of dividends or the distribution of assets upon
liquidation or (b) amend, alter or repeal the provisions of the Declaration or
the By-Laws, whether by merger, consolidation or otherwise, so as to materially
affect any preference, right or power of such shares of Municipal Preferred or
the holders thereof; provided, however, that a division of a share of Municipal
Preferred shall be deemed to materially affect any such preference, right or
power only if the terms of such division adversely affect the holders of shares
of Municipal Preferred. The Trust may not, without the affirmative vote of the
holders of at least 66 2/3% of the shares of Municipal Preferred outstanding at
the time, voting as a separate class, file a voluntary application for relief
under federal bankruptcy law or any similar application under state law for so
long as the Trust is solvent and does not foresee becoming insolvent.
Notwithstanding the second sentence of this paragraph, the Trust may, without
the vote of the holders of shares of Municipal Preferred, authorize, create or
issue additional shares of Municipal Preferred or classes or series of Preferred
Shares ranking on a parity with shares of Municipal Preferred with respect to
the payment of dividends and the distribution of assets upon liquidation if the
Trust obtains written confirmation from Moody's (if Moody's is then rating the
shares of Municipal Preferred) and Standard & Poor's (if Standard & Poor's is
then rating the shares of Municipal Preferred) that the issuance of any such
additional shares or class or series of shares would not impair the rating then
assigned by such rating agency to shares of Municipal Preferred; provided,
however, that if Moody's or Standard & Poor's is not then rating the shares of
Municipal Preferred, the aggregate liquidation preference of all Preferred
Shares of the Trust outstanding after any such issuance, exclusive of
accumulated and unpaid dividends, may not exceed $60,000,000.

                                       31
<PAGE>   37


     To the extent permitted by the Investment Company Act of 1940, if any
action set forth in the preceding paragraph would adversely affect the rights of
one or more series (the "Affected Series") of Municipal Preferred in a manner
different from any other series of Municipal Preferred, the Trust will not
approve any such action without the affirmative vote of the holders of at least
a majority of the shares of each such Affected Series outstanding at the time
(each such Affected Series voting as a separate class).


REDEMPTION

     MANDATORY REDEMPTION.  In the event the Trust does not timely cure a
failure to maintain (1) a Discounted Value of its portfolio equal to the
Municipal Preferred Basic Maintenance Amount or (2) the 1940 Act Municipal
Preferred Asset Coverage, in each case in accordance with the requirements of
the rating agency or agencies then rating the shares of Municipal Preferred,
shares of Municipal Preferred will be subject to mandatory redemption on a date
specified by the Board of Trustees, out of funds legally available therefor in
accordance with the Declaration, the By-Laws and applicable law, at the
redemption price of $25,000 per share plus an amount equal to accumulated but
unpaid dividends thereon (whether or not earned or declared) to (but not
including) the date fixed for redemption. Any such redemption will be limited to
the number of shares of Municipal Preferred necessary to restore the required
Discounted Value or the 1940 Act Municipal Preferred Asset Coverage, as the case
may be.

     In determining the number of shares of Municipal Preferred required to be
redeemed in accordance with the foregoing, the Trust will allocate the number of
shares required to be redeemed to satisfy the Municipal Preferred Basic
Maintenance Amount or the 1940 Act Municipal Preferred Asset Coverage, as the
case may be, pro rata among shares of Municipal Preferred and other Preferred
Shares of the Trust, subject to redemption or retirement.

     OPTIONAL REDEMPTION.  Shares of Municipal Preferred are redeemable, at the
option of the Trust:

          (i) in whole or in part, on the second business day preceding any
     dividend payment date for such shares, out of funds legally available
     therefor in accordance with the Declaration, the By-Laws and applicable
     law, at the redemption price of $25,000 per share plus an amount equal to
     accumulated but unpaid dividends thereon (whether or not earned or
     declared) to (but not including) the date fixed for redemption; provided,
     however, that (1) shares of Municipal Preferred may not be redeemed in part
     if after such partial redemption fewer than 500 shares remain outstanding
     and (2) the notice establishing a special rate period of shares of
     Municipal Preferred, as delivered to the auction agent and filed with the
     Secretary of the Trust, may provide that such shares shall not be
     redeemable during the whole or any part of such special rate period (except
     as provided in (ii) below) or shall be redeemable during the whole or any
     part of such special rate period only upon payment of such redemption
     premium or premiums as shall be specified therein; and

          (ii) as a whole but not in part, out of funds legally available
     therefor in accordance with the Declaration, the By-Laws and applicable
     law, on the first day following any dividend period included in a rate
     period of more than 364 rate period days if, on the date of determination
     of the Applicable Rate for that rate period, that Applicable Rate equaled
     or exceeded on such date of determination the Treasury Note Rate for that
     rate period, at a redemption price of $25,000 per share plus an amount
     equal to accumulated but unpaid dividends thereon (whether or not earned or
     declared) to (but not including) the date fixed for redemption.

     Notwithstanding the foregoing, if any dividends on shares of Municipal
Preferred (whether or not earned or declared) are in arrears, no shares of
Municipal Preferred shall be redeemed unless all outstanding shares of Municipal
Preferred are simultaneously redeemed, and the Trust shall not purchase or
otherwise acquire any shares of Municipal Preferred; provided, however, that the
foregoing shall not prevent the purchase or acquisition of all outstanding
shares of Municipal Preferred pursuant to the successful completion of an
otherwise lawful purchase or exchange offer made on the same terms to, and
accepted by, holders of all outstanding shares of Municipal Preferred.

                                       32
<PAGE>   38

LIQUIDATION

     Subject to the rights of holders of any series or class or classes of
shares ranking on a parity with shares of Municipal Preferred with respect to
the distribution of assets upon liquidation of the Trust, upon a liquidation of
the Trust, whether voluntary or involuntary, the holders of shares of Municipal
Preferred then outstanding will be entitled to receive and to be paid out of the
assets of the Trust available for distribution to its shareholders, before any
payment or distribution shall be made on the Common Shares, an amount equal to
the liquidation preference with respect to such shares ($25,000 per share), plus
an amount equal to all dividends thereon (whether or not earned or declared)
accumulated but unpaid to (but not including) the date of final distribution in
same-day funds, together with any applicable Gross-up Payments in connection
with the liquidation of the Trust. After the payment to the holders of the
shares of Municipal Preferred of the full liquidation preference amounts
provided for as described herein, the holders of Municipal Preferred as such
shall have no right or claim to any of the remaining assets of the Trust.

     Neither the sale of all or substantially all the property or business of
the Trust, nor the merger or consolidation of the Trust into or with any
Massachusetts business trust or corporation nor the merger or consolidation of
any Massachusetts business trust or corporation into or with the Trust shall be
a liquidation, whether voluntary or involuntary, for the purposes of the
foregoing paragraph.

                            RATING AGENCY GUIDELINES

     The Trust is required under Moody's and Standard & Poor's guidelines to
maintain assets having in the aggregate a Discounted Value at least equal to the
Municipal Preferred Basic Maintenance Amount. Moody's and Standard & Poor's have
each established separate guidelines for determining Discounted Value. To the
extent any particular portfolio holding does not satisfy the applicable rating
agency's guidelines, all or a portion of such holding's value will not be
included in the calculation of Discounted Value (as defined by such rating
agency). The Moody's and Standard & Poor's guidelines do not impose any
limitations on the percentage of Trust assets that may be invested in holdings
not eligible for inclusion in the calculation of the Discounted Value of the
Trust's portfolio. The amount of such assets included in the portfolio at any
time may vary depending upon the rating, diversification and other
characteristics of the eligible assets included in the portfolio. The Municipal
Preferred Basic Maintenance Amount includes the sum of (i) the aggregate
liquidation preference of shares of Municipal Preferred then outstanding and
(ii) accrued and projected payment obligations of the Trust.

     The Trust is also required under rating agency guidelines to maintain, with
respect to the shares of Municipal Preferred, as of the last business day of
each month in which any shares of Municipal Preferred are outstanding, asset
coverage of at least 200% with respect to senior securities which are shares,
including shares of Municipal Preferred (or such other asset coverage as may in
the future be specified in or under the Investment Company Act of 1940 as the
minimum asset coverage for senior securities which are shares of a closed-end
investment company as a condition of declaring dividends on its common shares)
("1940 Act Municipal Preferred Asset Coverage"). Based on the composition of the
Trust's portfolio and market conditions as of June 30, 1999, the 1940 Act
Municipal Preferred Asset Coverage with respect to shares of Municipal
Preferred, assuming the issuance on the date hereof of all shares of Municipal
Preferred offered hereby and after giving effect to the deduction of the sales
load and offering costs relating thereto estimated at $889,180, would be
computed as follows:

<TABLE>
<S>                                            <C>    <C>             <C>    <C>
Value of Trust assets less liabilities not
constituting senior securities                        $185,797,976
- -------------------------------------------           ------------
                                                 =                      =    310%
Senior securities representing indebtedness
  plus                                                $ 60,000,000
liquidation value of the shares of
Municipal Preferred
</TABLE>

     In the event the Trust does not timely cure a failure to maintain (1) a
Discounted Value of its portfolio equal to the Municipal Preferred Basic
Maintenance Amount or (2) the 1940 Act Municipal Preferred Asset Coverage, in
each case in accordance with the requirements of the rating agency or
                                       33
<PAGE>   39

agencies then rating the shares of Municipal Preferred, the Trust will be
required to redeem shares of Municipal Preferred as described above under
"Description of Municipal Preferred -- Redemption."

     The Trust may, but is not required to, adopt any modifications to the
guidelines that may hereafter be established by Moody's or Standard & Poor's.
Failure to adopt any such modifications, however, may result in a change in the
ratings described above or a withdrawal of ratings altogether. In addition, any
rating agency providing a rating for the shares of Municipal Preferred may, at
any time, change or withdraw any such rating. The Board of Trustees may, without
shareholder approval, amend, alter or repeal any or all of the definitions and
related provisions which have been adopted by the Trust pursuant to the rating
agency guidelines in the event the Trust receives written confirmation from
Moody's or Standard & Poor's, or both, as appropriate, that any such change
would not impair the ratings then assigned by Moody's and Standard & Poor's to
shares of Municipal Preferred.

     As described by Moody's and Standard & Poor's, a preferred share rating is
an assessment of the capacity and willingness of an issuer to pay preferred
share obligations. The ratings on the Municipal Preferred are not
recommendations to purchase, hold or sell shares of Municipal Preferred,
inasmuch as the ratings do not comment as to market price or suitability for a
particular investor. The rating agency guidelines described above also do not
address the likelihood that an owner of shares of Municipal Preferred will be
able to sell such shares in an auction or otherwise. The ratings are based on
current information furnished to Moody's and Standard & Poor's by the Trust and
the Advisor, and information obtained from other sources. The ratings may be
changed, suspended or withdrawn as a result of changes in, or the unavailability
of, such information.

     A rating agency's guidelines will apply to shares of Municipal Preferred
only so long as such rating agency is rating such shares. The Trust will pay
fees to Moody's or Standard & Poor's, or both, for rating shares of Municipal
Preferred.

                          DESCRIPTION OF COMMON SHARES

     In addition to the shares of Municipal Preferred, the Declaration
authorizes the issuance of an unlimited number of Common Shares, no par value.
All Common Shares have equal noncumulative voting rights and equal rights with
respect to dividends, assets and liquidation. Common Shares are fully paid and
nonassessable when issued and have no preemptive, conversion or exchange rights.
So long as any shares of Municipal Preferred are outstanding, the Trust is not
permitted to declare dividends on, make any distributions with respect to, or
purchase its Common Shares unless, at the time of such declaration, distribution
or purchase, as applicable (and after giving effect thereto), all accumulated
dividends on any preferred shares of the Trust have been paid.

     In the past, the Trust's Common Shares have traded at various times at
either a premium or a discount in relation to net asset value. Shares of other
closed-end investment companies frequently trade at a discount from net asset
value.

          CERTAIN PROVISIONS IN THE AGREEMENT AND DECLARATION OF TRUST

     The Board of Trustees is divided into three classes, each having a term of
three years. Each year the term of one class expires. This may make it more
difficult to change the Trust's management and could have the effect of
depriving shareholders of an opportunity to sell their Common Shares at a
premium over prevailing market prices by discouraging a third party from seeking
to obtain control of the Trust in a tender offer or similar transaction. In
addition, the Declaration provides that the affirmative vote or consent of
two-thirds of the outstanding Common Shares and any Preferred Shares of the
Trust (including shares of Municipal Preferred), voting together as a single
class, and of the Preferred Shares (including shares of Municipal Preferred)
voting together as a single class, would be required to authorize the conversion
of the Trust from a closed-end to an open-end investment company. This
two-thirds vote requirement is higher than the vote required under the
Investment Company Act of 1940.

     Reference should be made to the Declaration on file with the Commission for
the full text of these provisions.
                                       34
<PAGE>   40

            REPURCHASE OF COMMON SHARES; CONVERSION TO OPEN-END FUND

REPURCHASE OF SHARES

     Shares of closed-end investment companies frequently trade at a discount
from net asset value. The Board of Trustees regularly monitors the relationship
between the Trust's market price and net asset value. If shares of the Trust
were to trade at a substantial discount to net asset value for an extended
period of time, the Board of Trustees may consider the repurchase of its Common
Shares on the open market or the making of tender offers for such shares. Since
commencement of the Trust's operations, no such open market purchases or tender
offers have been made, and no assurances can be given that such actions will be
taken in the future. Subject to its investment restrictions, the Trust may
borrow money to finance the repurchase of shares, subject to compliance with the
1940 Act Municipal Preferred Asset Coverage, Section 18 of the Investment
Company Act of 1940 and the other limitations described under "Rating Agency
Guidelines." Shares may not be repurchased, however, (i) if applicable asset
coverage requirements under the Investment Company Act of 1940 (i.e., 200% with
respect to any Preferred Shares of the Trust, including shares of Municipal
Preferred) are not met or would not be met following such repurchase or (ii) if
otherwise prohibited by applicable law.

     There can be no assurance that repurchases or tenders, if they were to
occur, would result in the shares trading at a price which is equal to their net
asset value. The Trust anticipates that the market price of the shares will
usually vary from net asset value. The market price of the shares will be
determined, among other things, by the relative demand for and supply of the
shares in the market, the Trust's investment performance, the Trust's dividends
and yield and investor perception of the Trust's overall attractiveness as an
investment as compared with other investment alternatives. It should be
recognized that any such acquisitions of shares would decrease the total assets
of the Trust and therefore have the effect of increasing the Trust's expense
ratio. Furthermore, any interest on borrowings to finance share repurchase
transactions would reduce the Trust's net income.

CONVERSION TO OPEN-END STATUS

     The Trust's Board of Trustees may from time to time consider submitting to
the holders of the shares of beneficial interest of the Trust at any time a
proposal to convert the Trust to an open-end investment company. In determining
whether to exercise its discretion to submit this issue to shareholders, the
Board of Trustees would consider all factors then relevant, including the
relationship of the market price of the Common Shares to net asset value, the
extent to which the Trust's capital structure is leveraged and the possibility
of re-leveraging, the spread, if any, between yields on lower rated securities
in the Trust's portfolio and interest and dividend charges on senior securities
and general market and economic conditions. In addition to any vote required by
Massachusetts law, conversion of the Trust to an open-end investment company
would require the affirmative vote of two-thirds of the Common Shares and any
Preferred Shares of the Trust (including shares of Municipal Preferred), voting
together as a single class, and of the Preferred Shares (including shares of
Municipal Preferred) voting together as a single class, entitled to be voted on
the matter. This two-thirds vote requirement is higher than the vote required
under the Investment Company Act of 1940. Shareholders of an open-end investment
company may require the company to redeem their shares at any time (except in
certain circumstances as authorized by or under the Investment Company Act of
1940) at their net asset value, less such redemption charges, if any, as might
be in effect at the time of redemption. If the Trust converted to an open-end
investment company, it would be required to redeem all shares of Municipal
Preferred then outstanding at the redemption price specified under "Description
of Municipal Preferred -- Redemption -- Optional Redemption." In addition, the
Trust could be required to liquidate portfolio securities to meet required and
requested redemptions, and its Common Shares would no longer be listed on the
New York Stock Exchange. No assurance can be given that the Board of Trustees
will, at any time in the future, decide to submit a proposal to convert to
open-end status to the shareholders of the Trust.

                                       35
<PAGE>   41

                                  TAX MATTERS

     The following federal tax discussion is based on the advice of Ropes &
Gray, counsel to the Trust, and reflects provisions of the Internal Revenue
Code, existing Treasury regulations, rulings published by the Internal Revenue
Service, and other applicable authority, as of the date of this Prospectus.
These authorities are subject to change by legislative or administrative action.
The following discussion is only a summary of some of the important tax
considerations generally applicable to investments in the Trust. There may be
other tax considerations applicable to particular investors. In addition, income
earned through an investment in the Trust may be subject to foreign, state and
local taxes. Prospective shareholders are therefore urged to consult their tax
advisors with respect to the tax consequences to them of an investment in the
Trust. For more information on federal income tax considerations, see "Tax
Matters" in the Statement of Additional Information.

FEDERAL TAXATION OF THE TRUST

     The Trust intends to qualify each year for taxation as a regulated
investment company under Subchapter M of the Internal Revenue Code. If the Trust
so qualifies, the Trust will not be subject to federal income tax on income
distributed in a timely manner to Trust shareholders in the form of dividends or
capital gain distributions.

     The Trust's investments and hedging activities are subject to special
federal tax rules. Internal Revenue Code rules governing the Trust's hedging
transactions (including hedging transactions in futures and options) may alter
the character of distributions to holders of shares of Municipal Preferred.
Income earned as a result of the Trust's hedging transactions will not be
eligible to be treated as "exempt-interest dividends" when distributed to
shareholders. The Trust's investment in securities issued at a discount will
(and investments in securities purchased at a discount may) require the Trust to
accrue and distribute income not yet received. Therefore, in order to generate
sufficient cash to make the requisite distributions, the Trust may be required
to sell securities in its portfolio that it otherwise would have continued to
hold.

FEDERAL TAXATION OF SHAREHOLDERS

     DIVIDENDS AND OTHER DISTRIBUTIONS.  Assuming that the Trust qualifies for
taxation as a regulated investment company under Subchapter M of the Internal
Revenue Code and that, at the close of each quarter of the Trust's taxable year,
at least 50% of the value of the Trust's total assets consists of obligations
the interest on which is exempt from federal income tax under Internal Revenue
Code section 103(a), the Trust will qualify to pay "exempt-interest dividends"
to its shareholders to the extent of its tax-exempt interest income (less
applicable expenses). Distributions of net tax-exempt interest income that the
Trust properly designates as exempt-interest dividends are treated by
shareholders as interest excludable from their gross income for federal income
tax purposes but may be taxable for federal alternative minimum tax purposes
(discussed below) and for foreign, state and local tax purposes.

     Under the Internal Revenue Code, the interest on certain "private activity
bonds" issued after August 7, 1986 is treated as a preference item and is (after
reduction by applicable expenses) included in the federal alternative minimum
taxable income of both individuals and corporations. The Trust will furnish to
shareholders annually a report indicating the percentage of Trust income treated
as a preference item for alternative minimum tax purposes. In addition, for
corporations, alternative minimum taxable income is increased by a percentage of
the amount by which an alternative measure of income that includes interest on
all tax-exempt securities exceeds the amount otherwise determined to be
alternative minimum taxable income. Accordingly, the portion of the Trust's
dividends that would otherwise be tax-exempt to shareholders may cause certain
shareholders to be subject to the federal alternative minimum tax or may
increase the tax liability of a shareholder who is subject to such tax.
Investors should thus consider the possible effect of an investment in the Trust
on their federal alternative minimum tax liability.

     Exempt-interest dividends attributable to interest received on certain
private activity bonds and certain industrial development bonds will not be
tax-exempt to any shareholders who are, within the meaning of

                                       36
<PAGE>   42

Section 147(a) of the Internal Revenue Code, "substantial users" of the
facilities financed by such obligations or bonds or who are "related persons" of
such substantial users.

     The receipt of exempt-interest dividends may affect the portion, if any, of
an individual shareholder's Social Security and Railroad Retirement benefits
that will be includable in gross income subject to federal income tax. Up to 85
percent of Social Security and Railroad Retirement benefits may be included in
gross income in cases where the recipient's combined income, consisting of
adjusted gross income (with certain adjustments), tax-exempt interest income and
one-half of any Social Security and Railroad Retirement benefits, exceeds a base
amount ($25,000 for a single individual and $32,000 for individuals filing a
joint return). Individual shareholders receiving Social Security or Railroad
Retirement benefits should consult their tax advisors.

     All or a portion of interest on indebtedness incurred or continued by a
shareholder to purchase or carry Trust shares may not be deductible by the
shareholder. See "Tax Matters -- Federal Income Tax Matters -- Federal Taxation
of Shareholders" in the Statement of Additional Information.

     Distributions of net investment income that do not qualify as
exempt-interest dividends (including the excess, if any, of net short-term
capital gain over net long-term capital loss), will be taxable to shareholders
as ordinary income, and will not qualify for the corporate dividends-received
deduction. Distributions of net capital gain will be taxable to shareholders as
long-term capital gain, without regard to how long a shareholder has held shares
of the Trust, and will not qualify for the corporate dividends-received
deduction.


     Due to certain of the Trust's hedging and other investment activities, the
net investment income calculated for accounting purposes and distributed to
shareholders may in certain circumstances exceed or be less than the Trust's net
tax-exempt and taxable income. Because Trust expenses attributable to earning
tax-exempt income do not reduce the Trust's current earnings and profits, a
portion of any distribution in excess of the Trust's net tax-exempt and taxable
income may be considered paid out of the Trust's earnings and profits and
therefore treated as a taxable dividend (even though that portion economically
represents a return of the Trust's capital). If the Trust distributes amounts in
excess of the Trust's "earnings and profits" (which provides the measure of the
Trust's dividend-paying capacity for tax purposes), such distributions to
shareholders will be treated as a return of capital to the extent of a
shareholder's basis in his or her shares of Municipal Preferred, and thereafter
as gain from the sale or exchange of a capital asset. A return of capital is not
taxable to a shareholder and has the effect of reducing a shareholder's basis in
the relevant shares, which basis reduction would cause shareholders of Municipal
Preferred to realize gain if their shares of Municipal Preferred were sold for
an amount equal to the liquidation price.



     The Internal Revenue Service has taken the position in a published revenue
ruling indicating that the Trust is required to designate distributions paid
with respect to its Common Shares and its Preferred Shares as consisting of a
portion of each type of income distributed by the Trust. The portion of each
type of income deemed received by the holders of each class of shares will be
equal to the portion of total Trust distributions received by such class. Thus,
the Trust will designate dividends paid as exempt-interest dividends in a manner
that allocates such dividends between the holders of the Common Shares and the
holders of shares of Municipal Preferred, in proportion to the total dividends
paid to each such class during or with respect to the taxable year, or otherwise
as required by applicable law. Long-term capital gain distributions and other
income subject to regular federal income tax will similarly be allocated between
the two classes. The amount of taxable income allocable to shares of Municipal
Preferred will depend on the amount of such income realized by the Trust, but
generally is not expected to be significant. No dividend that the Trust pays
will be increased to compensate for the fact that it may be subject to foreign,
state or local taxes.


     If for any reason it is determined after the payment of any dividend that a
portion of that dividend was subject to federal income tax, the Trust will not
be required to pay any additional amount to compensate for any tax payable on
the dividend (other than Gross-up Payments payable under the circumstances
described in this Prospectus). See "Description of Municipal
Preferred -- Dividends and
                                       37
<PAGE>   43

Dividend Periods -- Gross-up Payments." The Trust will generally designate
Gross-up Payments as exempt-interest dividends to the extent it determines such
designation is consistent with the allocation principles set forth above. The
federal income tax consequences of Gross-up Payments under existing law are
uncertain. For example, existing authorities, including the revenue ruling
discussed in the above paragraph, do not specifically address whether dividends
(including possibly Gross-up Payments) that are paid following the close of a
taxable year, but that are treated for tax purposes as derived from the income
of such prior taxable year, are treated as dividends "paid" during such prior
taxable year for purposes of determining each class's proportionate share of a
particular type of income. The Trust currently intends to treat such dividends
as having been "paid" in the prior taxable year for purposes of determining each
class's proportionate share of a particular type of income with respect to such
prior taxable year. Existing authorities also do not specifically address the
allocation of taxable income among the dividends paid to holders of a class of
shares during or with respect to a taxable year. It is possible that the
Internal Revenue Service could disagree with the Trust's position concerning the
treatment of dividends paid after the close of a taxable year or with the
Trust's method of allocation, in which case the Internal Revenue Service could
attempt to recharacterize a portion of the dividends paid to the holders of
shares of Municipal Preferred and designated by the Trust as exempt-interest
dividends as consisting instead of capital gain or other taxable income. If the
Internal Revenue Service were to prevail with respect to any such attempted
recharacterization, holders of shares of Municipal Preferred could be subject to
tax on amounts so recharacterized and the Trust could be subject to federal
income and excise tax. In such event, no additional amounts (including Gross-up
Payments) would be paid by the Trust with respect to dividends so
recharacterized to compensate for any additional tax owed by holders of shares
of Municipal Preferred. Gross-up Payments will not include any amount to
compensate for the fact that the Gross-up Payments or the Taxable Allocations
(see "Description of Municipal Preferred -- Dividends and Dividend
Periods -- Gross-up Payments") may themselves be subject to foreign, state or
local taxes. No provision will be made to compensate holders of shares of
Municipal Preferred for any alternative minimum tax liability in respect of
distributions on such shares of Municipal Preferred. Ropes & Gray has advised
the Trust that, should the Internal Revenue Service attempt to so recharacterize
amounts allocated by the Trust to shares of Municipal Preferred, the Internal
Revenue Service would be unlikely to prevail. However, such advice represents
only Ropes & Gray's best legal judgment and is not binding on the Internal
Revenue Service.

     Any dividend paid by the Trust during January of a given year generally is
deemed to have been received by shareholders on December 31 of the preceding
year, provided that the dividend actually was declared by the Trust in October,
November or December of such preceding year and payable to shareholders of
record on a date in such a month.

     The Trust will notify shareholders each year of the amount and tax status
of dividends and other distributions, including the amount of any distribution
of net capital gain.

     The Internal Revenue Code provides that every shareholder required to file
a tax return must include for information purposes on such return the amount of
exempt-interest dividends received from all sources (including the Trust) during
the taxable year.

     SALE OR REDEMPTION OF SHARES.  In some circumstances, the sale or exchange
of shares of Municipal Preferred may give rise to gain or loss. In general, any
gain or loss realized upon a taxable disposition of shares of Municipal
Preferred by a shareholder will be treated as long-term capital gain or loss if
the shares have been held for more than twelve months, and otherwise as
short-term capital gain or loss. However, if a shareholder buys shares of
Municipal Preferred and sells them at a loss within six months, any loss will be
disallowed for federal income tax purposes to the extent of any exempt-interest
dividends received on such shares. In addition, any loss (not already disallowed
as provided in the preceding sentence) realized upon a taxable disposition of
shares of Municipal Preferred held for six months or less will be treated as
long-term, rather than short-term, capital loss to the extent of any net capital
gain distributions received by the shareholder with respect to those shares. All
or a portion of any loss realized upon a taxable disposition of shares of
Municipal Preferred will be disallowed if other shares of Municipal

                                       38
<PAGE>   44

Preferred are purchased within 30 days before or after the disposition. In such
a case, the basis of the newly purchased shares of Municipal Preferred will be
adjusted to reflect the disallowed loss.

     Gain or loss, if any, resulting from a redemption of shares of Municipal
Preferred generally will be treated as gain or loss from the sale or exchange of
a capital asset under Internal Revenue Code section 302, rather than as a
dividend, but only if the redemption distribution (i) is deemed not to be
essentially equivalent to a dividend, (ii) is in complete redemption of an
owner's interest in the Trust, (iii) is substantially disproportionate with
respect to the owner, or (iv) with respect to non-corporate owners, is in
partial liquidation of the Trust. For purposes of (i), (ii) and (iii) above, an
owner's common share ownership will be taken into account.

       CUSTODIAN, TRANSFER AGENT, DIVIDEND DISBURSING AGENT AND REGISTRAR

     The Trust's securities and cash are held by The Chase Manhattan Bank, whose
principal business address is 270 Park Avenue, New York, New York 10017-2070, as
custodian (the "Custodian") under a custodian contract.

     Bankers Trust Company, whose principal business address is Four Albany
Street, New York, New York 10006, serves as auction agent for the Trust in
connection with the shares of Municipal Preferred. BankBoston, N.A. (formerly
The First National Bank of Boston), whose principal business address is 100
Federal Street, Boston, Massachusetts 02110, serves as dividend disbursing
agent, as agent under the Trust's Dividend Reinvestment Plan and as transfer
agent and registrar for the Trust's Common Shares.

                                  UNDERWRITING

     Subject to the terms and conditions of the Underwriting Agreement between
Salomon Smith Barney Inc. (the "Underwriter") and the Trust (the "Underwriting
Agreement") dated the date hereof, the Underwriter has agreed to purchase, and
the Trust has agreed to sell, 2,400 shares of Series M Municipal Preferred
offered hereby.

     The Underwriting Agreement provides that the obligations of the Underwriter
are subject to the approval of certain legal matters by counsel and to certain
conditions precedent, and that the Underwriter is obligated to purchase all of
the shares of Municipal Preferred if any are purchased. In the Underwriting
Agreement, the Trust and the Advisor have agreed to indemnify the Underwriter
with respect to certain liabilities, including liabilities arising under the
Securities Act of 1933, and to contribute in respect thereof.


     The Trust has been advised by the Underwriter that it proposes initially to
offer the shares of Municipal Preferred offered hereby to the public at the
price set forth on the cover page of this Prospectus and to selected dealers at
such price less a concession not to exceed $     per share. The Underwriter may
allow, and such dealers may reallow, a concession not in excess of $     per
share on sales to certain other dealers. The underwriting commission to be paid
by the Trust of $     per share is equal to      % of the initial offering
price. After the initial public offering, the public offering price and the
concession may be changed by the Underwriter.


     The Trust anticipates that the Underwriter may from time to time act as a
broker or dealer in connection with the execution of its portfolio transactions
after it has ceased to be an Underwriter. The Trust anticipates that the
Underwriter or one of its affiliates may, from time to time, act in auctions as
a Broker-Dealer as set forth under "The Auction -- General" and will receive the
fees described under "The Auction -- Broker-Dealers" in the Statement of
Additional of Information in exchange for so acting. The Underwriter is an
active underwriter of, and dealer in, securities and acts as a market maker in a
number of such securities and therefore can be expected to engage in portfolio
transactions with the Trust.

     The principal business address of Salomon Smith Barney Inc. is 388
Greenwich Street, New York, New York 10010.

                                       39
<PAGE>   45

                                 LEGAL OPINIONS

     Certain legal matters in connection with the Series M Municipal Preferred
offered hereby will be passed upon for the Trust by Ropes & Gray, Boston,
Massachusetts, and for the Underwriters by Simpson Thacher & Bartlett, New York,
New York. Simpson Thacher & Bartlett will rely, as to certain matters of
Massachusetts law in its opinion, on the opinion of Ropes & Gray.

                            REPORTS TO SHAREHOLDERS

     The Trust will send unaudited semiannual and audited annual reports to its
shareholders, including, as currently required by regulations of the Securities
and Exchange Commission, a list of investments held.

                                    EXPERTS

     The Financial Statements included in the Statement of Additional
Information have been so included in reliance on the report of
PricewaterhouseCoopers LLP, independent accountants, given on the authority of
said firm as experts in accounting and auditing. The address of
PricewaterhouseCoopers LLP is 160 Federal Street, Boston, Massachusetts 02110.

                              FURTHER INFORMATION

     The Trust has filed with the Securities and Exchange Commission (the
"Commission"), Washington, DC 20549, a Registration Statement under the
Securities Act with respect to the shares of Municipal Preferred offered hereby.
Further information concerning these securities and the Trust may be found in
the Registration Statement, of which this Prospectus constitutes a part, on file
with the Commission. The Registration Statement may be inspected without charge
at the Commission's office in Washington, DC, and copies of all or any part
thereof may be obtained from such office after payment of the fees prescribed by
the Commission.

     The Trust is subject to the informational requirements of the Securities
Exchange Act of 1934 and the Investment Company Act of 1940, and in accordance
therewith files reports and other information with the Commission. Such reports,
proxy and information statements and other information can be inspected and
copied at the public reference facilities maintained by the Commission at 450
Fifth Street, N.W., Washington, DC 20549 and the Commission's regional offices,
including offices at Seven World Trade Center, New York, New York 10048. Call
1-800-SEC-0330 for information about the public reference facilities. Copies of
such material can be obtained from the Public Reference Section of the
Commission at 450 Fifth Street, N.W., Washington, DC 20549 at prescribed rates.
Such reports and other information concerning the Trust may also be inspected at
the offices of the New York Stock Exchange. The Commission maintains a Web site
(http://www.sec.gov) that contains the Statement of Additional Information,
material incorporated by reference into this Prospectus and the Statement of
Additional Information, and reports, proxy and information statements and other
information regarding registrants that file electronically with the Commission.
In addition, reports, proxy and information statements and other information
concerning the Trust can be inspected at the offices of the New York Stock
Exchange, 20 Broad Street, New York, New York 10005.

                                       40
<PAGE>   46

            TABLE OF CONTENTS OF STATEMENT OF ADDITIONAL INFORMATION

<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
Use of Proceeds.............................................   B-2
Investment Objectives and Policies..........................   B-2
Trust Charges and Expenses..................................   B-4
Management of the Trust.....................................   B-5
Portfolio Transactions......................................  B-11
Net Asset Value.............................................  B-11
The Auction.................................................  B-13
Description of Municipal Preferred..........................  B-25
Repurchase of Common Shares.................................  B-44
Miscellaneous Investment Practices..........................  B-46
Tax Matters.................................................  B-56
Shareholder Liability.......................................  B-59
Custodian...................................................  B-59
Independent Accountants.....................................  B-59
Glossary....................................................  B-60
Financial Statements........................................   F-1
Appendix A -- Ratings of Investments........................   A-1
Appendix B -- Auction Procedures............................   B-1
Appendix C -- Settlement Procedures.........................   C-1
Appendix D -- Rating Agency Futures and Options
  Restrictions..............................................   D-1
</TABLE>

                                       41
<PAGE>   47

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

                                  $60,000,000

                   COLONIAL INVESTMENT GRADE MUNICIPAL TRUST

               MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES

                             2,400 SHARES, SERIES M

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

                                   PROSPECTUS

                                           , 1999

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

                              SALOMON SMITH BARNEY

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   48

THE INFORMATION IN THIS STATEMENT OF ADDITIONAL INFORMATION IS NOT COMPLETE AND
MAY BE CHANGED. WE MAY NOT SELL THESE SECURITIES UNTIL THE REGISTRATION
STATEMENT FILED WITH THE SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS
STATEMENT OF ADDITIONAL INFORMATION IS NOT AN OFFER TO SELL THESE SECURITIES AND
IS NOT SOLICITING AN OFFER TO BUY THESE SECURITIES IN ANY STATE WHERE THE OFFER
OR SALE IS NOT PERMITTED.


                  SUBJECT TO COMPLETION, DATED AUGUST 23, 1999

                   COLONIAL INVESTMENT GRADE MUNICIPAL TRUST
                      STATEMENT OF ADDITIONAL INFORMATION

     This Statement of Additional Information ("SAI") relating to the Series M
Municipal Auction Rate Cumulative Preferred Shares ("Municipal Preferred")
offered by Colonial Investment Grade Municipal Trust (the "Trust") contains
information which may be useful to investors but which is not included in the
Prospectus of the Trust. This SAI is not a prospectus and is authorized for
distribution only when accompanied or preceded by the Prospectus of the Trust
dated                , 1999, describing the Municipal Preferred (the
"Prospectus"). This SAI should be read together with the Prospectus. Investors
may obtain a free copy of the Prospectus by calling Colonial Management
Associates, Inc. at 1-800-426-3750. Capitalized terms used but not defined in
this SAI have the meanings ascribed to them in the Prospectus.

                               TABLE OF CONTENTS

<TABLE>
<S>                                                           <C>
USE OF PROCEEDS.............................................   B-2
INVESTMENT OBJECTIVES AND POLICIES..........................   B-2
TRUST CHARGES AND EXPENSES..................................   B-4
MANAGEMENT OF THE TRUST.....................................   B-5
PORTFOLIO TRANSACTIONS......................................  B-11
NET ASSET VALUE.............................................  B-11
THE AUCTION.................................................  B-13
DESCRIPTION OF MUNICIPAL PREFERRED..........................  B-25
REPURCHASE OF COMMON SHARES.................................  B-44
MISCELLANEOUS INVESTMENT PRACTICES..........................  B-46
TAX MATTERS.................................................  B-56
SHAREHOLDER LIABILITY.......................................  B-59
CUSTODIAN...................................................  B-59
INDEPENDENT ACCOUNTANTS.....................................  B-59
GLOSSARY....................................................  B-60
FINANCIAL STATEMENTS........................................   F-1
APPENDIX A -- Ratings of Investments........................   A-1
APPENDIX B -- Auction Procedures............................   B-1
APPENDIX C -- Settlement Procedures.........................   C-1
APPENDIX D -- Rating Agency Futures and Options
  Restrictions..............................................   D-1
</TABLE>

 The date of this Statement of Additional Information is                , 1999.
<PAGE>   49

                                USE OF PROCEEDS

     The net proceeds of the offering of shares of Municipal Preferred will be
approximately $       after payment of the sales load to Salomon Smith Barney
Inc. (the "Underwriter") and estimated offering costs. A portion of the offering
costs has been advanced by the Trust's investment advisor, Colonial Management
Associates, Inc. (the "Advisor").

     The net proceeds of the offering will be invested in accordance with the
Trust's investment objectives and policies. It is presently anticipated that the
Trust will be able to invest substantially all of the net proceeds in Municipal
Obligations that meet the Trust's investment objectives at or shortly (within
six to eight weeks) after the completion of the offering. To the extent that all
of the proceeds cannot be so invested, pending such investment, they will be
invested initially in high-quality, short-term tax-exempt money market
securities, the income on which will be exempt from Federal income taxes, or in
high-quality Municipal Obligations with relatively low volatility (such as
pre-refunded and intermediate-term securities), to the extent such securities
are available. If necessary to invest fully the net proceeds of the offerings
immediately, the Trust may also purchase, as temporary investments, short-term
taxable investments of the type described under "Investment Objectives and
Policies -- Temporary and Defensive Investments" in the Prospectus, the income
on which is subject to Federal income taxes.

                       INVESTMENT OBJECTIVES AND POLICIES

     The Trust's Prospectus describes its investment objectives and investment
policies. This SAI includes additional information concerning, among other
things, the investment policies of the Trust and information about certain
securities and investment techniques that are described or referred to in the
Prospectus or in which the Trust expects to engage. Except as indicated under
"Fundamental Investment Policies," the Trust's investment policies are not
fundamental and the Trustees may change the policies without shareholder
approval.

FUNDAMENTAL INVESTMENT POLICIES

     The following fundamental restrictions are for the protection of the
Trust's shareholders and cannot be changed without the approval of the holders
of a "majority of the outstanding" Common Shares and Preferred Shares, including
shares of Municipal Preferred, voting together as a single class, and of the
holders of a "majority of the outstanding" Preferred Shares, including shares of
Municipal Preferred, voting as a separate class. A "majority of the outstanding"
shares means the lesser of (i) 67% of the shares represented at a meeting at
which more than 50% of the outstanding shares are represented or (ii) more than
50% of the outstanding shares, as defined in the Investment Company Act of 1940,
as amended (the "1940 Act").

     The Trust may:

     1. Issue senior securities or borrow money to the extent permitted by the
        1940 Act;

     2. Only own real estate acquired as a result of owning securities;

     3. Purchase and sell futures contracts and related options;

     4. Underwrite securities issued by others only when disposing of portfolio
        securities;

     5. Make loans through lending of securities, through the purchase of debt
        instruments or similar evidences of indebtedness typically sold to
        financial institutions and through repurchase agreements;

     6. Not concentrate more than 25% of its total assets in any one industry,
        or with respect to 75% of total assets purchase any security (other than
        obligations of the U.S. Government and cash items including receivables)
        if as a result more than 5% of its total assets would then be invested
        in securities of a single issuer or purchase the voting securities of an
        issuer if, as a result of such purchase, the Trust would own more than
        10% of the outstanding voting shares of such issuer (The Trust will
        treat each state and each separate political subdivision, agency,
        authority or
                                       B-2
<PAGE>   50

        instrumentality of such state, each multistate agency or authority, and
        each guarantor, if any, as separate issuers. In the utilities category,
        gas, electric, water and telephone companies will be considered as
        separate industries.);

     7. And will, under normal circumstances, invest at least 80% of its assets
        in tax-exempt bonds and tax-exempt notes.

     For the purpose of applying the limitation set forth above in subparagraph
(6), an issuer shall be deemed the sole issuer of a security when its assets and
revenues are separate from other governmental entities and its securities are
backed only by its assets and revenues. Similarly, in the case of a non-
governmental issuer, such as an industrial corporation or a privately owned or
operated hospital, if the security is backed only by the assets and revenues of
the non-governmental issuer, then such non-governmental issuer would be deemed
to be the sole issuer. Where a security is also backed by the enforceable
obligation of a superior or unrelated governmental or other entity (other than a
bond insurer), it shall also be included in the computation of securities owned
that are issued by such governmental or other entity. Where a security is
guaranteed by a governmental entity or some other facility, such as a bank
guarantee or letter of credit, such a guarantee or letter of credit would be
considered a separate security and would be treated as an issue of such
government, other entity or bank. When a Municipal Obligation is insured by bond
insurance, it shall not be considered a security that is issued or guaranteed by
the insurer; instead, the issuer of such Municipal Obligation will be determined
in accordance with the principles set forth above. The foregoing restrictions do
not limit the percentage of the Trust's assets that may be invested in Municipal
Obligations insured by any given insurer.

     The restrictions and other limitations set forth above will apply only at
the time of purchase of securities and will not be considered violated unless an
excess or deficiency occurs or exists immediately after and as a result of an
acquisition of securities.

OTHER INVESTMENT POLICIES

     As non-fundamental investment policies which may be changed by the Trust
without a shareholder vote, the Trust may not:

     1. Purchase securities on margin, but it may receive short-term credit to
        clear securities transactions and may make initial or maintenance margin
        deposits in connection with futures transactions;

     2. Have a short securities position, unless the Trust owns, or owns rights
        (exercisable without payment) to acquire, an equal amount of such
        securities;

     3. Purchase or sell commodities or commodity contracts, except that,
        consistent with its investment policies, the Trust may purchase and sell
        financial futures contracts and options and may enter into swap
        agreements, foreign exchange contracts and other financial transactions
        not requiring the delivery of physical commodities;*

     4. Own securities of any company if the Trust knows that the officers and
        Trustees of the Trust or officers and directors of the Advisor who
        individually own more than 0.5% of such securities together own more
        than 5% of such securities; and

     5. Invest in interests in oil, gas or other mineral exploration or
        development programs, including leases.

* The Trust deems the investment policy regarding commodities and commodities
  contracts to be a fundamental investment policy of the Trust and will not
  change this policy without the vote of the shareholders necessary to change a
  fundamental investment policy of the Trust.

     Restrictions imposed by Moody's or Standard & Poor's, or both, on engaging
in futures and options transactions as described under "Description of Municipal
Preferred -- Asset Maintenance," are not fundamental policies and may be changed
by the Trust from time to time without shareholder approval; provided, however,
that if Moody's or Standard & Poor's, or both, are rating the shares of
Municipal

                                       B-3
<PAGE>   51

Preferred, the Trust must receive written confirmation from Moody's or Standard
& Poor's, or both, as appropriate, that any such change would not impair the
ratings then assigned by Moody's and Standard & Poor's to shares of Municipal
Preferred. See also "Description of Municipal Preferred -- Rating Agency
Guidelines" for a description of other rating agency restrictions, none of which
is a fundamental policy of the Trust and which may be changed by the Trust from
time to time without shareholder approval subject to the foregoing proviso.

                           TRUST CHARGES AND EXPENSES

     Under the Trust's management agreement, the Trust pays the Advisor a
monthly fee based on the average weekly net assets of the Trust, including the
proceeds of the offering of the shares of Municipal Preferred, for such month at
the annual rate of 0.65%.

RECENT FEES PAID TO THE ADVISOR AND THE TRANSFER AGENT (BANKBOSTON, N.A.,
FORMERLY KNOWN AS THE FIRST NATIONAL BANK OF BOSTON)

<TABLE>
<CAPTION>
                                                              YEAR ENDED DECEMBER 31,
                                                              -----------------------
                                                              1998     1997     1996
                                                              -----    -----    -----
                                                              (DOLLARS IN THOUSANDS)
<S>                                                           <C>      <C>      <C>
Management fee..............................................  $854     $821     $802
Bookkeeping fee.............................................    37       36       35
Transfer agent fee..........................................    25       50       47
</TABLE>

BROKERAGE COMMISSIONS

     The Trust did not pay any brokerage commissions for the years ended
December 31, 1998, 1997 and 1996.

                                       B-4
<PAGE>   52

                            MANAGEMENT OF THE TRUST

TRUSTEES AND OFFICERS

     The names and business addresses of the Trustees and officers of the Trust
and their principal occupations and other affiliations during the past five
years are set forth below.

<TABLE>
<CAPTION>
NAME (AGE)                                POSITIONS AND                 PRINCIPAL OCCUPATIONS
AND ADDRESS                             OFFICES WITH TRUST             DURING PAST FIVE YEARS
- -----------                            --------------------    ---------------------------------------
<S>                                    <C>                     <C>
Robert J. Birnbaum (71)..............  Trustee                 Consultant (formerly Special Counsel,
313 Bedford Road                                               Dechert Price & Rhoads (law firm) from
Ridgewood, NJ 07450                                            September, 1988 to December, 1993;
                                                               President, New York Stock Exchange from
                                                               May, 1985 to June, 1988; President,
                                                               American Stock Exchange, Inc. from 1977
                                                               to May, 1985).

Tom Bleasdale (69)...................  Trustee                 Retired (formerly Chairman of the Board
502 Woodlands Drive                                            and Chief Executive Officer, Shore Bank
Linville, NC 07450                                             & Trust Company from 1992 to 1993);
                                                               Director of The Empire Company since
                                                               June, 1995.

John V. Carberry* (52)...............  Trustee                 Senior Vice President of Liberty
56 Woodcliff Road                                              Financial Companies, Inc. (formerly
Wellesley Hills, MA 02481                                      Managing Director, Salomon Brothers
                                                               (investment banking) from January, 1988
                                                               to January, 1998).

Lora S. Collins (63).................  Trustee                 Attorney (formerly Attorney, Kramer,
1175 Hill Road                                                 Levin, Naftalis & Frankel (law firm)
Southold, NY 11971                                             from September, 1986 to November,
                                                               1996).

James E. Grinnell (69)...............  Trustee                 Private Investor since November, 1988.
22 Harbor Avenue
Marblehead, MA 01945

Richard W. Lowry* (63)...............  Trustee                 Private Investor since August, 1987.
Seven Winter Street
Nantucket, MA 02554

Salvatore Macera (67)................  Trustee                 Private Investor (formerly Executive
26 Little Neck Lane                                            Vice President and Director of Itek
New Seabury, MA 02649                                          Corporation (electronics) from 1975 to
                                                               1981).

William E. Mayer* (59)...............  Trustee                 Partner, Development Capital, LLC
500 Park Avenue, 5th Floor                                     (venture capital) (formerly Dean,
New York, NY 10022                                             College of Business and Management,
                                                               University of Maryland from October,
                                                               1992 to November, 1996; Dean, Simon
                                                               Graduate School of Business, University
                                                               of Rochester from October, 1991 to
                                                               July, 1992).

James L. Moody, Jr.* (67)............  Trustee                 Retired (formerly Chairman of the
16 Running Tide Road                                           Board, Hannaford Bros. Co. (food
Cape Elizabeth, ME 04107                                       retailer) from May, 1984 to May, 1997,
                                                               and Chief Executive Officer, Hannaford
                                                               Bros. Co. from May, 1973 to May, 1992).

John J. Neuhauser (56)...............  Trustee                 Dean, Boston College School of
140 Commonwealth Avenue                                        Management since September, 1977.
Chestnut Hill, MA 02167
</TABLE>

                                       B-5
<PAGE>   53

<TABLE>
<CAPTION>
NAME (AGE)                                POSITIONS AND                 PRINCIPAL OCCUPATIONS
AND ADDRESS                             OFFICES WITH TRUST             DURING PAST FIVE YEARS
- -----------                            --------------------    ---------------------------------------
<S>                                    <C>                     <C>
Thomas E. Stitzel* (63)..............  Trustee                 Professor of Finance, College of
2208 Tawny Woods Place                                         Business, Boise State University
Boise, ID 83706                                                (higher education); Business consultant
                                                               and author.

Robert L. Sullivan* (71).............  Trustee                 Retired (formerly Partner, KPMG Peat
45 Sankaty Avenue                                              Marwick LLP, from July, 1966 to June,
Siasconset, MA 02564                                           1985).

Anne-Lee Verville (53)...............  Trustee                 Consultant (formerly General Manager,
359 Stickney Hill Road                                         Global Education Industry from 1994 to
Hopkinton, NH 03229                                            1997, and President, Applications
                                                               Solutions Division from 1991 to 1994,
                                                               IBM Corporation (global education and
                                                               global applications)).

Stephen E. Gibson (45)...............  President               President of the Trust and the Liberty
                                                               Funds since June, 1998, Chairman of the
                                                               Board since July, 1998, and Chief
                                                               Executive Officer and President since
                                                               December, 1996, and Director since 1996
                                                               of the Advisor (formerly Executive Vice
                                                               President from July, 1996 to December,
                                                               1996); Director, Chief Executive
                                                               Officer and President of Liberty Funds
                                                               Group LLC (formerly known as COGRA,
                                                               LLC) ("LFG") since December, 1998
                                                               (formerly Director, Chief Executive
                                                               Officer and President of The Colonial
                                                               Group, Inc. ("TCG") from December, 1996
                                                               to December, 1998); Assistant Chairman
                                                               of Stein Roe & Farnham Incorporated
                                                               ("SR&F") since August, 1998 (formerly
                                                               Managing Director of Marketing of
                                                               Putnam Investments from June, 1992 to
                                                               July, 1996).

J. Kevin Connaughton (34)............  Controller and Chief    Controller and Chief Accounting Officer
                                       Accounting Officer      of the Trust and the Liberty Funds,
                                                               except Liberty Funds Trust IX, since
                                                               February, 1998; Controller, Liberty
                                                               Funds Trust IX, since December, 1998;
                                                               Vice President of the Advisor since
                                                               February, 1998 (formerly Senior Tax
                                                               Manager, Coopers & Lybrand, LLP from
                                                               April, 1996 to January, 1998; Vice
                                                               President, 440 Financial Group/First
                                                               Data Investor Services Group from
                                                               March, 1994 to April, 1996.
</TABLE>

                                       B-6
<PAGE>   54

<TABLE>
<CAPTION>
NAME (AGE)                                POSITIONS AND                 PRINCIPAL OCCUPATIONS
AND ADDRESS                             OFFICES WITH TRUST             DURING PAST FIVE YEARS
- -----------                            --------------------    ---------------------------------------
<S>                                    <C>                     <C>
Timothy J. Jacoby (45)...............  Treasurer and Chief     Treasurer and Chief Financial Officer
                                       Financial Officer       of the Trust and the Liberty Funds,
                                                               except Liberty Funds Trust IX, since
                                                               October, 1996 (formerly Controller and
                                                               Chief Accounting Officer from October,
                                                               1997 to February, 1998); Treasurer of
                                                               Liberty Funds Trust IX since December,
                                                               1998; Senior Vice President of the
                                                               Advisor since September, 1996; Vice
                                                               President, Chief Financial Officer and
                                                               Treasurer of LFG since December, 1998
                                                               (formerly Vice President, Chief
                                                               Financial Officer and Treasurer of TCG
                                                               from July, 1997 to December, 1998);
                                                               Senior Vice President of SR&F since
                                                               August, 1998 (formerly Senior Vice
                                                               President, Fidelity Accounting and
                                                               Custody Services from September, 1993
                                                               to September, 1996).

Nancy L. Conlin (45).................  Secretary               Secretary of the Trust and the Liberty
                                                               Funds, except Liberty Funds Trust IX
                                                               since April, 1998 (formerly Assistant
                                                               Secretary from July, 1994 to April,
                                                               1998); Director, Senior Vice President,
                                                               General Counsel, Clerk and Secretary of
                                                               the Advisor since April, 1998 (formerly
                                                               Vice President, Counsel, Assistant
                                                               Secretary and Assistant Clerk from
                                                               July, 1994 to April, 1998); Vice
                                                               President, General Counsel and
                                                               Secretary of LFG since December, 1998
                                                               (formerly Vice President, General
                                                               Counsel and Clerk of TCG from April,
                                                               1998 to December, 1998; formerly
                                                               Assistant Clerk from July, 1994 to
                                                               April, 1998).
</TABLE>

- ---------------
* Denotes those Trustees who are "interested persons" (as defined in the
  Investment Company Act of 1940, as amended (the "1940 Act")) of the Trust, the
  Advisor or the Underwriter. Mr. Carberry is an "interested person" as defined
  in the 1940 Act because of his affiliation with Liberty Financial Companies,
  Inc., an indirect parent company of the Advisor. Mr. Mayer is an "interested
  person" as defined in the 1940 Act because he is a director of Hambrecht &
  Quist Incorporated, a registered broker-dealer. Messrs. Lowry, Moody and
  Stitzel are "interested persons" as defined in the 1940 Act because each has a
  direct or indirect beneficial interest in, or is designated as trustee,
  executor or guardian of a legal interest in, the Underwriter or a controlling
  person (as such term is defined in the 1940 Act) of the Underwriter.

     The business address of the officers of the Trust is One Financial Center,
Boston, MA 02111.

     The Trustees of the Trust are also directors or trustees, as the case may
be, of Liberty Funds Trust I, Liberty Funds Trust II, Liberty Funds Trust III,
Liberty Funds Trust IV, Liberty Funds Trust V, Liberty Funds Trust VI, Liberty
Funds Trust VII, Liberty Funds Trust VIII (formerly known as LFC Utilities
Trust), Liberty Variable Investment Trust ("LVIT"), Colonial Municipal Income
Trust, Colonial High Income Municipal Trust, Colonial Intermediate High Income
Fund, and Colonial Intermarket Income Trust I, (collectively, each trust or any
series thereof termed the "Liberty Funds").

     At the next annual meeting of the Trust's shareholders, holders of
outstanding shares of Municipal Preferred, voting together as one separate
class, will elect two trustees, and holders of outstanding Common Shares and
shares of Municipal Preferred, voting together as a single class, will elect
five trustees. See "Description of Municipal Preferred -- Voting Rights."

                                       B-7
<PAGE>   55

     The Trustees serve as trustees of all Liberty Funds for which each Trustee
(except Mr. Carberry) receives an annual retainer of $45,000 and attendance fees
of $8,000 for each regular joint meeting and $1,000 for each special joint
meeting. Committee chairs and the lead Trustee receive an annual retainer of
$5,000, and Committee chairs receive $1,000 for each special meeting attended on
a day other than a regular joint meeting day. Committee members receive an
annual retainer of $1,000 and $1,000 for each special meeting attended on a day
other than a regular joint meeting day. Two-thirds of the Trustee fees are
allocated among the Liberty Funds based on each Liberty Fund's relative net
assets, and one-third of the fees are divided equally among the Liberty Funds.

TRUSTEES AND TRUSTEES' FEES

     For the fiscal and calendar year ended December 31, 1998, the Trustees
received the following compensation for serving as Trustees (a):

<TABLE>
<CAPTION>
                                                                               TOTAL COMPENSATION FROM
                                      AGGREGATE COMPENSATION FROM THE        THE FUND COMPLEX PAID TO THE
                                      TRUST FOR THE FISCAL YEAR ENDED    TRUSTEES FOR THE CALENDAR YEAR ENDED
TRUSTEE                                      DECEMBER 31, 1998                   DECEMBER 31, 1998(b)
- -------                               -------------------------------    ------------------------------------
<S>                                   <C>                                <C>
Robert J. Birnbaum(c)...............              $1,267                               $ 99,429
Tom Bleasdale(c)....................               1,463(d)                             115,000(e)
John V. Carberry(f)(g)..............                 N/A                                    N/A
Lora S. Collins(c)..................               1,241                                 97,429
James E. Grinnell(c)................               1,312(gg)                            103,071
William D. Ireland, Jr.(h)..........                 550                                 35,333
Richard W. Lowry(c).................               1,250                                 98,214
Salvatore Macera(i).................                   0                                 25,250
William E. Mayer(c).................               1,315                                 99,286
James L. Moody, Jr.(c)..............               1,347(j)                             105,857(k)
John J. Neuhauser(c)................               1,342                                105,323
George L. Shinn(h)..................                 499                                 31,334
Thomas E. Stitzel(i)................                   0                                 25,250
Robert L. Sullivan(c)...............               1,349                                104,100
Anne-Lee Verville(c)(f).............                 933(l)                              23,445(m)
Sinclair Weeks, Jr.(h)..............                 539                                 34,333
</TABLE>

- ---------------
(a)  The Trust does not currently provide pension or retirement plan benefits to
     the Trustees.

(b)  At December 31, 1998, the complex consisted of 56 open-end and 5 closed-end
     management investment portfolios in the Liberty Funds (the "Fund Complex").

(c)  Elected by the shareholders of LVIT on October 30, 1998.

(d)  Includes $644 payable in later years as deferred compensation.

(e)  Includes $52,000 payable in later years as deferred compensation.

(f)  Elected by the trustees of the closed-end Liberty Funds on June 18, 1998,
     and by the shareholders of the open-end Liberty Funds on October 30, 1998.

(g)  Does not receive compensation because he is an affiliated Trustee and
     employee of Liberty Financial Companies, Inc. ("Liberty Financial").

(gg) Includes $11 payable in later years as deferred compensation.

(h)  Retired as a Trustee of the Trust on April 24, 1998.

(i)  Elected by the shareholders of the open-end Liberty Funds on October 30,
     1998, and by the trustees of the closed-end Liberty Funds on December 17,
     1998.

(j)  Total compensation of $1,347 for the fiscal year ended December 31, 1998,
     will be payable in later years as deferred compensation.
                                       B-8
<PAGE>   56

(k)  Total compensation of $105,857 for the calendar year ended December 31,
     1998, will be payable in later years as deferred compensation.

(l)  Total compensation of $933 for the fiscal year ended December 31, 1998,
     will be payable in later years as deferred compensation.

(m)  Total compensation of $23,445 for the calendar year ended December 31,
     1998, will be payable in later years as deferred compensation.

     For the fiscal year ended December 31, 1998, certain of the Trustees
received the following compensation in their capacities as trustees or directors
of Liberty All-Star Equity Fund, Liberty All-Star Growth Fund, Inc. and Liberty
Funds Trust IX (formerly known as LAMCO Trust I) (together, the "Liberty
All-Star Funds") (n):

<TABLE>
<CAPTION>
                                                          TOTAL COMPENSATION FROM THE LIBERTY
                                                          ALL-STAR FUNDS FOR THE CALENDAR YEAR
TRUSTEE                                                        ENDED DECEMBER 31, 1998(O)
- -------                                                   ------------------------------------
<S>                                                       <C>
Robert J. Birnbaum......................................                $25,000
John V. Carberry(p).....................................                    N/A
James E. Grinnell.......................................                 25,000
Richard W. Lowry........................................                 25,000
William E. Mayer(q).....................................                 14,000
John J. Neuhauser(r)....................................                 25,000
</TABLE>

- ---------------
(n)  The Liberty All-Star Funds do not currently provide pension or retirement
     plan benefits to the trustees/directors.

(o)  The Liberty All-Star Funds are advised by Liberty Asset Management Company
     ("LAMCO"). LAMCO is an indirect wholly-owned subsidiary of Liberty
     Financial (an intermediate parent of the Advisor).

(p)  Elected by the trustees/directors of the Liberty All-Star Funds on June 30,
     1998. Does not receive compensation because he is an affiliated trustee and
     employee of Liberty Financial.

(q)  Elected by the shareholders of the Liberty All-Star Equity Fund on April
     22, 1998, and by the directors of the Liberty All-Star Growth Fund, Inc. on
     December 17, 1998.

(r)  Elected by the shareholders of the Liberty All-Star Funds on April 22,
     1998.

     At August 17, 1999, the Trust's officers and Trustees as a group owned less
than 1% of the outstanding Common Shares.


     At July 31, 1999, CEDE & Co. WT FAST, P.O. Box 20, Bowling Green Station,
New York, New York 10274-0020, owned of record 9,588,364 shares, representing
83.3%, of the Trust's outstanding shares.


     In addition to the provisions discussed in the Prospectus under "Certain
Provisions in the Agreement and Declaration of Trust," the Declaration provides
that the obligations of the Trust are not binding upon the Trustees of the Trust
individually, but only upon the assets and property of the Trust. The
Declaration also provides that the Trust will indemnify its Trustees and
officers against liabilities and expenses incurred in connection with litigation
in which they may be involved because of their offices with the Trust but that
such indemnification will not relieve any officer or Trustee of any liability to
the Trust or its shareholders by reason of willful misfeasance, bad faith, gross
negligence or reckless disregard of his or her duties. The Trust, at its
expense, provides liability insurance for the benefit of its Trustees and
officers.

INVESTMENT ADVISOR

     Colonial Management Associates, Inc. (the "Advisor"), and/or its affiliate,
Colonial Advisory Services, Inc. ("CASI"), has rendered investment advisory
services to investment company, institutional and other clients since 1931. The
Advisor currently serves as investment advisor, sub-advisor or administrator for
64 open-end and 5 closed-end management investment company portfolios. Trustees
and

                                       B-9
<PAGE>   57

officers of the Trust, who are also officers of the Advisor or its affiliates,
will benefit from the advisory fees, sales commissions and agency fees paid or
allowed by the Trust. More than 30,000 financial advisors have recommended the
Liberty Funds to over 800,000 clients worldwide, representing more than $16.3
billion in assets.

     The Advisor is a subsidiary of Liberty Funds Group LLC ("LFG"), One
Financial Center, Boston, MA 02111. LFG is an indirect wholly owned subsidiary
of Liberty Financial Companies, Inc. ("Liberty Financial"), which in turn is a
direct majority-owned subsidiary of LFC Management Corporation, which in turn is
a direct wholly owned subsidiary of Liberty Corporate Holdings, Inc., which in
turn is a direct wholly owned subsidiary of LFC Holdings, Inc., which in turn is
a direct wholly owned subsidiary of Liberty Mutual Equity Corporation, which in
turn is a direct wholly owned subsidiary of Liberty Mutual Insurance Company
("Liberty Mutual"). Liberty Mutual is an underwriter of workers' compensation
insurance and a property and casualty insurer in the United States. Liberty
Financial's address is 600 Atlantic Avenue, Boston, MA 02210. Liberty Mutual's
address is 175 Berkeley Street, Boston, MA 02117.

     Under a Management Agreement (the "Agreement"), the Advisor has contracted
to furnish the Trust with investment research and recommendations or trust
management, respectively, and accounting and administrative personnel and
services, and with office space, equipment and other facilities. For these
services and facilities, the Trust pays a monthly fee based on the average
weekly net assets of the Trust for such month. Under the Agreement, any
liability of the Advisor to the Trust and/or its shareholders is limited to
situations involving the Advisor's own willful misfeasance, bad faith, gross
negligence or reckless disregard of its duties.

     The Agreement may be terminated with respect to the Trust at any time on 60
days' written notice by the Advisor or by the Trustees of the Trust or by a vote
of a majority of the outstanding voting securities of the Trust. The Agreement
will automatically terminate upon any assignment thereof and shall continue in
effect from year to year only so long as such continuance is approved at least
annually (i) by the Trustees of the Trust or by a vote of a majority of the
outstanding voting securities of the Trust and (ii) by vote of a majority of the
Trustees who are not interested persons (as such term is defined in the 1940
Act) of the Advisor or the Trust, cast in person at a meeting called for the
purpose of voting on such approval.

     The Advisor pays all salaries of officers of the Trust. The Trust pays all
expenses not assumed by the Advisor, including, but not limited to, auditing,
legal, custodial, investor servicing and shareholder reporting expenses. The
Trust pays the cost of printing and mailing any Prospectuses sent to
shareholders.

     The Advisor also provides the Trust with bookkeeping and pricing services,
and for these services, the Trust pays the Advisor a monthly fee of $1,500 for
the first $50 million of Trust assets, plus a monthly percentage fee at the
following annual rates: 0.0233% on the next $950 million; 0.0167% on the next $1
billion; 0.0100% on the next $1 billion; and 0.0007% on the excess over $3
billion of the average net assets of the Trust for such month.

     The Advisor also acts as investment advisor to the other Liberty Funds
(described under "Fund Charges and Expenses -- Trustees' Fees"). The Advisor's
affiliate, CASI, advises other institutional, corporate, fiduciary and
individual clients for which CASI performs various services. Various officers
and Trustees of the Trust also serve as officers, directors or trustees of other
Liberty Funds and the other corporate or fiduciary clients of the Advisor. The
other investment companies and clients advised by the Advisor may sometimes
invest in securities and options in which the Trust will also invest. If the
Trust, such other investment companies and such clients desire to buy or sell
the same portfolio securities or options at about the same time, the purchases
and sales will normally be made as nearly as practicable on a pro rata basis in
proportion to the amounts desired to be purchased or sold by each. Although in
some cases these practices may have a detrimental effect on the price or volume
of the securities or options as far as the Trust is concerned, in most cases it
is believed that these practices should produce better executions. It is the
opinion of the Trustees that the desirability of retaining the Advisor as
investment advisor to the Liberty Funds outweighs the disadvantages, if any,
which might result from these practices.

                                      B-10
<PAGE>   58

                             PORTFOLIO TRANSACTIONS

     The Advisor is responsible for decisions to buy and sell securities and
other portfolio holdings for the Trust, the selection of brokers and dealers to
effect the transactions and the negotiation of brokerage commissions, if any.
Fixed-income securities are generally traded on a "net" basis with dealers
acting as principals for their own accounts without a stated commission,
although the price of the security will likely include a profit to the dealer.
In underwritten offerings, securities are usually purchased at a fixed price
which includes an amount of compensation to the underwriter, generally referred
to as the underwriter's concession or discount. On occasion, certain money
market instruments may be purchased directly from an issuer, in which case no
commissions or discounts are paid.

     In placing orders for portfolio securities of the Trust, the Advisor is
required to give primary consideration to obtaining the most favorable price and
efficient execution. This means that the Advisor will seek to execute each
transaction at a price and commission, if any, which provides the most favorable
total cost or proceeds reasonably attainable under the circumstances. In seeking
the most favorable price and execution, the Advisor, having in mind the Trust's
best interests, will consider all factors it deems relevant, including, by way
of illustration, price, the size of the transaction, the nature of the market
for the security, the amount of commission, the timing of the transaction taking
into account market prices and trends, the reputation, experience and financial
stability of the broker-dealer involved and the quality of service rendered by
the broker-dealer in other transactions. Though the Advisor generally seeks
reasonably competitive spreads or commissions, the Trust will not necessarily be
paying the lowest spread or commission available. Within the framework of the
policy of obtaining the most favorable price and efficient execution, the
Advisor will consider research and investment services provided by brokers and
dealers who effect or are parties to portfolio transactions with the Trust, the
Advisor or the Advisor's other clients. Such research and investment services
are those which brokerage houses customarily provide to institutional investors
and include statistical and economic data and research reports on particular
issuers and industries. Such services are used by the Advisor in connection with
all of its investment activities, and some of such services obtained in
connection with the execution of transactions for the Trust may be used in
managing other investment accounts. Conversely, brokers furnishing such services
may be selected for the execution of transactions for such other accounts, and
the services furnished by such brokers may be used by the Advisor in providing
investment management for the Trust. Commission rates are established pursuant
to negotiations based on the quality and quantity of execution services provided
by the broker or dealer in light of generally prevailing rates. The management
fee paid by the Trust will not be reduced because the Advisor and/or other
clients receive such services. The allocation of orders and the commission rates
paid by the Trust will be reviewed periodically by the Board of Trustees.

     As permitted by Section 28(e) of the Securities Exchange Act of 1934, as
amended (the "1934 Act"), the Advisor may cause the Trust to pay a broker-dealer
which provides "brokerage and research services" (as defined in the 1934 Act) to
the Advisor, an amount of disclosed commission for effecting a securities
transaction for the Trust in excess of the commission which another
broker-dealer would have charged for effecting that transaction.

     For the fiscal years ended December 31, 1996, 1997 and 1998, the Trust paid
no brokerage commissions for the execution of portfolio transactions. The rates
of portfolio turnover for each of the fiscal years ended December 31, 1996, 1997
and 1998 were 20%, 21% and 24%, respectively.

                                NET ASSET VALUE

     Net asset value of the Trust will be determined no less frequently than as
of the close of regular trading on the New York Stock Exchange (the "Exchange")
(generally 4:00 p.m. Eastern time) on the last Business Day of each week
(generally Friday), and at such other times as the Trust may authorize. The net
asset value of the Trust equals the value of the Trust's assets less the Trust's
liabilities. Portfolio securities for which market quotations are readily
available are valued at current market value. Short-term investments maturing in
60 days or less are valued at amortized cost when the Advisor determines,
pursuant to procedures adopted by the Board of Trustees, that such cost
approximates current market
                                      B-11
<PAGE>   59

value. All other securities and assets are valued at their fair value following
procedures adopted by the Board of Trustees.

     In determining net asset value for the Trust, the Trust's custodian
utilizes the valuations of portfolio securities furnished by a pricing service
approved by the Board of Trustees. Securities for which quotations are not
readily available (which will constitute a majority of the securities held by
the Trust) are valued at fair value as determined by the pricing service using
methods which include consideration of the following: yields or prices of
municipal bonds of comparable quality, type of issue, coupon, maturity and
rating; indications as to value from dealers; and general market conditions. The
pricing service may employ electronic data processing techniques or a matrix
system, or both, to determine valuations. The procedures of the pricing service
and its valuations are reviewed by the officers of the Trust under the general
supervision of the Board of Trustees.

                                      B-12
<PAGE>   60

                                  THE AUCTION

GENERAL

     The Amended and Restated By-Laws of Colonial Investment Grade Municipal
Trust, adopted by the Board of Trustees (the "By-Laws"), provide that the
Applicable Rate for each Rate Period of Municipal Preferred after the Initial
Rate Period therefor shall be equal to the rate per annum that the Auction Agent
advises has resulted on the Business Day preceding the first day of such
Subsequent Rate Period (an "Auction Date") from implementation of the auction
procedures (the "Auction Procedures") set forth in the By-Laws and summarized
below, in which persons determine to hold or offer to sell or, based on dividend
rates bid by them, offer to purchase or sell such shares. Each periodic
implementation of the Auction Procedures is referred to herein as an "Auction."
The following summary is qualified by reference to the Auction Procedures set
forth in the By-Laws.

     As used herein with respect to shares of Municipal Preferred, (i)
"Applicable Rate" means the rate per annum at which dividends are payable on
such shares for any Rate Period thereof, (ii) "Beneficial Owner" means a
customer of a Broker-Dealer who is listed on the records of that Broker-Dealer
(or, if applicable, the Auction Agent) as a holder of such shares, (iii)
"Business Day" means a day on which the New York Stock Exchange is open for
trading and is not a Saturday, Sunday or other day on which banks in New York
City are authorized by law to close, (iv) "Date of Original Issue" means the
date on which the Trust initially issued such shares, (v) "Dividend Payment
Date" means any date on which dividends on such shares are payable as provided
under "Description of Municipal Preferred -- Dividends -- General," (vi)
"Dividend Period" means the period from and including the Date of Original Issue
of such shares to but excluding the initial Dividend Payment Date for such
shares and any period thereafter from and including one Dividend Payment Date
for such shares to but excluding the next succeeding Dividend Payment Date for
such shares, (vii) "Existing Holder" means a Broker-Dealer (or any such other
Person as may be permitted by the Trust) that is listed on the records of the
Auction Agent as a holder of such shares, (viii) "Initial Rate Period" means the
period from and including the Date of Original Issue of such shares to but
excluding the initial Dividend Payment Date for such shares, (ix) "Potential
Beneficial Owner" means a customer of a Broker-Dealer that is not a Beneficial
Owner of such shares that wishes to purchase such shares, or that is a
Beneficial Owner that wishes to purchase additional such shares, (x) "Potential
Holder" means a Broker-Dealer (or any such other Person as may be permitted by
the Trust) that is not an Existing Holder of such shares or that is an Existing
Holder of such shares that wishes to become the Existing Holder of additional
such shares, (xi) "Rate Period" means the Initial Rate Period of such shares and
any Subsequent Rate Period, including any Special Rate Period, of such shares,
(xii) "Subsequent Rate Period" means any period from and including the first day
following the Initial Rate Period of such shares to but excluding the next
Dividend Payment Date for such shares and any period thereafter from and
including one Dividend Payment Date for such shares to but excluding the next
succeeding Dividend Payment Date for such shares; provided, however, that if any
Subsequent Rate Period is also a Special Rate Period, such term shall mean the
period commencing on the first day of such Special Rate Period and ending on the
last day of the last Dividend Period thereof, (xiii) "Minimum Rate Period" means
any Rate Period consisting of 7 Rate Period Days and (xiv) "Special Rate Period"
means any Subsequent Rate Period commencing on the date designated by the Trust,
as set forth under "Description of Municipal
Preferred -- Dividends -- Designation of Special Rate Periods," and ending on
the last day of the last Dividend Period thereof.

     AUCTION AGENCY AGREEMENT.  The Trust will enter into an agreement (the
"Auction Agency Agreement") with Bankers Trust Company (together with any
successor bank or trust company or other entity entering into a similar
agreement with the Trust, the "Auction Agent") which provides, among other
things, that the Auction Agent will follow the Auction Procedures for purposes
of determining the Applicable Rate for shares of Municipal Preferred so long as
the Applicable Rate for such shares is to be based on the results of an Auction.

     BROKER-DEALER AGREEMENTS.  Each Auction requires the participation of one
or more broker-dealers. The Auction Agent will enter into an agreement with
Salomon Smith Barney Inc., and may enter into
                                      B-13
<PAGE>   61

similar agreements (collectively, the "Broker-Dealer Agreements") with one or
more additional broker-dealers (collectively, the "Broker-Dealers") selected by
the Trust, which provide for the participation of Broker-Dealers in Auctions.
See "Broker-Dealers" below.

     SECURITIES DEPOSITORY.  The Depository Trust Company ("DTC," together with
any successor securities depository selected by the Trust, the "Securities
Depository") will act as the Securities Depository for the Agent Members with
respect to shares of Municipal Preferred. One certificate for all of the shares
of Municipal Preferred will be registered in the name of Cede & Co. ("Cede"), as
nominee of the Securities Depository. Such certificate will bear a legend to the
effect that such certificate is issued subject to the provisions restricting
transfers of shares of Municipal Preferred contained in the By-Laws. The Trust
will also issue stop-transfer instructions to the transfer agent for shares of
Municipal Preferred. Prior to the commencement of the right of holders of
Preferred Shares to elect a majority of the Trust's trustees, as described below
under "Description of Municipal Preferred -- Voting Rights," Cede will be the
holder of record of all shares of Municipal Preferred, and owners of shares of
Municipal Preferred will not be entitled to receive certificates representing
their ownership interest in such shares.

     DTC, a New York-chartered limited purpose trust company, performs services
for its participants (including the Agent Members), some of whom (and/or their
representatives) own DTC. DTC maintains lists of its participants and will
maintain the positions (ownership interests) held by each such participant (the
"Agent Member") in shares of Municipal Preferred, whether for its own account or
as a nominee for another person.

AUCTION DATES; ADVANCE NOTICE OF ALLOCATION OF TAXABLE INCOME

     The first Auction for shares of Series M Municipal Preferred will be held
on Monday,             , 1999, the Business Day preceding the Dividend Payment
Date for the Initial Rate Period of Municipal Preferred. See "Description of
Municipal Preferred -- Dividends." Thereafter, Auctions will normally be held
every Monday, and each Subsequent Rate Period will normally begin on the
following Tuesday, unless the then-current Rate Period is a Special Rate Period
or, in certain circumstances, the day that would normally be the Auction Date or
the first day of such Subsequent Rate Period is not a Business Day. The Auction
Date and the first day of the related Rate Period (also a Dividend Payment Date)
must be Business Days but need not be consecutive days. See "Description of
Municipal Preferred -- Dividends" for information concerning the circumstances
under which the first day of a Rate Period or the Auction Date, or both, may be
moved to a date other than such specified days.

     Whenever the Trust intends to include any net capital gain or other income
taxable for Federal income tax purposes in any dividend on shares of Municipal
Preferred, the Trust shall, in the case of Minimum Rate Periods or Special Rate
Periods of 28 Rate Period Days or fewer, and may, in the case of any other
Special Rate Period, notify the Auction Agent of the amount to be so included
not later than the Dividend Payment Date next preceding the Auction Date on
which the Applicable Rate for such dividend is to be established. Whenever the
Auction Agent receives such notice from the Trust, it will be required in turn
to notify each Broker-Dealer, who, on or prior to such Auction Date, in
accordance with its Broker-Dealer Agreement, will be required to notify its
customers who are Beneficial Owners and Potential Beneficial Owners believed by
it to be interested in submitting an Order in the Auction to be held on such
Auction Date. See also "Description of Municipal
Preferred -- Dividends -- Gross-up Payments" below.

                                      B-14
<PAGE>   62

ORDERS BY EXISTING HOLDERS AND POTENTIAL HOLDERS

     Prior to the Submission Deadline (as defined under "Submission of Orders by
Broker-Dealers to Auction Agent" below) on each Auction Date for shares of
Municipal Preferred:

          (a) each Beneficial Owner of such shares may submit to its
     Broker-Dealer by telephone or otherwise a:

             (i) "Hold Order" -- indicating the number of outstanding shares of
        Municipal Preferred, if any, that such Beneficial Owner desires to
        continue to hold without regard to the Applicable Rate for such shares
        for the next succeeding Rate Period;

             (ii) "Bid" -- indicating the number of outstanding shares of
        Municipal Preferred, if any, that such Beneficial Owner offers to sell
        if the Applicable Rate for such shares for the next succeeding Rate
        Period shall be less than the rate per annum specified by such
        Beneficial Owner in such bid; and/or

             (iii) "Sell Order" -- indicating the number of outstanding shares
        of Municipal Preferred, if any, that such Beneficial Owner offers to
        sell without regard to the Applicable Rate for such shares for the next
        succeeding Rate Period; and

          (b) Broker-Dealers shall contact customers who are Potential
     Beneficial Owners by telephone or otherwise to determine whether such
     customers desire to submit Bids, in which they will indicate the number of
     shares of Municipal Preferred that they offer to purchase if the Applicable
     Rate for such shares for the next succeeding Rate Period is not less than
     the rate per annum specified in such Bids.

The communication to a Broker-Dealer of the foregoing information is herein
referred to as an "Order" and collectively as "Orders." A Beneficial Owner or a
Potential Beneficial Owner placing an Order with its Broker-Dealer is herein
referred to as a "Bidder" and collectively as "Bidders." The submission by a
Broker-Dealer of an Order to the Auction Agent shall likewise be referred to
herein as an "Order" and collectively as "Orders," and an Existing Holder or
Potential Holder who places an Order with the Auction Agent or on whose behalf
an Order is placed with the Auction Agent shall likewise be referred to herein
as a "Bidder" and collectively as "Bidders."

     A Beneficial Owner may submit different types of Orders to its
Broker-Dealer with respect to shares of Municipal Preferred then held by such
Beneficial Owner. A Bid placed by a Beneficial Owner specifying a rate higher
than the Applicable Rate determined in the Auction shall constitute an
irrevocable offer to sell the shares subject thereto. A Beneficial Owner that
submits a Bid to its Broker-Dealer having a rate higher than the Maximum Rate on
the Auction Date thereof will be treated as having submitted a Sell Order to its
Broker-Dealer. A Beneficial Owner that fails to submit to its Broker-Dealer
prior to the Submission Deadline for shares of Municipal Preferred an Order or
Orders covering all the outstanding shares of Municipal Preferred held by such
Beneficial Owner will be deemed to have submitted a Hold Order to its
Broker-Dealer covering the number of outstanding shares of Municipal Preferred
held by such Beneficial Owner and not subject to Orders submitted to its
Broker-Dealer; provided, however, that if a Beneficial Owner fails to submit to
its Broker-Dealer prior to the Submission Deadline for shares of Municipal
Preferred an Order or Orders covering all of the outstanding shares of Municipal
Preferred held by such Beneficial Owner for an Auction relating to a Special
Rate Period consisting of more than 28 Rate Period Days, such Beneficial Owner
will be deemed to have submitted a Sell Order to its Broker-Dealer covering the
number of outstanding shares of Municipal Preferred held by such Beneficial
Owner and not subject to Orders submitted to its Broker-Dealer. A Sell Order
shall constitute an irrevocable offer to sell the shares of Municipal Preferred
subject thereto at a price per share equal to $25,000. A Beneficial Owner of
shares of Municipal Preferred that offers to become the Beneficial Owner of
additional shares of Municipal Preferred is, for purposes of such offer, a
Potential Beneficial Owner.

     A Potential Beneficial Owner of shares of Municipal Preferred may submit to
its Broker-Dealer Bids in which it offers to purchase shares of Municipal
Preferred if the Applicable Rate for the next Rate Period is not less than the
rate specified in such Bid. A Bid placed by a Potential Beneficial Owner

                                      B-15
<PAGE>   63

specifying a rate not higher than the Maximum Rate shall constitute an
irrevocable offer to purchase the number of shares of Municipal Preferred
specified in such Bid if the rate determined in the Auction is equal to or
greater than the rate specified in such Bid.

     As described more fully below under "Submission of Orders by Broker-Dealers
to Auction Agent," the Broker-Dealers will submit the Orders of their respective
customers who are Beneficial Owners and Potential Beneficial Owners to the
Auction Agent, designating themselves (unless otherwise permitted by the Trust)
as Existing Holders in respect of shares subject to Orders submitted or deemed
submitted to them by Beneficial Owners and as Potential Holders in respect of
shares subject to Orders submitted to them by Potential Beneficial Owners.
However, neither the Trust nor the Auction Agent will be responsible for a
Broker-Dealer's failure to comply with the foregoing. Any Order placed with the
Auction Agent by a Broker-Dealer as or on behalf of an Existing Holder or a
Potential Holder will be treated in the same manner as an Order placed with a
Broker-Dealer by a Beneficial Owner or a Potential Beneficial Owner, as
described in the preceding paragraph. Similarly, any failure by a Broker-Dealer
to submit to the Auction Agent an Order in respect of any shares of Municipal
Preferred held by it or its customers who are Beneficial Owners will be treated
in the same manner as a Beneficial Owner's failure to submit to its
Broker-Dealer an Order in respect of shares of Municipal Preferred held by it,
as described in the second preceding paragraph. For information concerning the
priority given to different types of Orders placed by Existing Holders, see
"Submission of Orders by Broker-Dealers to Auction Agent" below.

     Neither the Trust nor an affiliate may submit an Order in any Auction,
except that any Broker-Dealer that is an affiliate of the Trust may submit
Orders in an Auction, but only if such Orders are not for its own account.

     The Auction Procedures include a pro rata allocation of shares for purchase
and sale, which may result in an Existing Holder continuing to hold or selling,
or a Potential Holder purchasing, a number of shares of Municipal Preferred that
is fewer than the number of shares of Municipal Preferred specified in its
Order. See "Acceptance and Rejection of Submitted Bids and Submitted Sell Orders
and Allocation of Shares" below. To the extent the allocation procedures have
that result, Broker-Dealers that have designated themselves as Existing Holders
or Potential Holders in respect of customer Orders will be required to make
appropriate pro rata allocations among their respective customers. Each purchase
or sale shall be made for settlement on the Business Day next succeeding the
Auction Date at a price per share equal to $25,000. See "Notification of
Results; Settlement" below.

     As described above, any Bid specifying a rate higher than the Maximum Rate
(as defined below) will (i) be treated as a Sell Order if submitted by a
Beneficial Owner or an Existing Holder and (ii) not be accepted if submitted by
a Potential Beneficial Owner or a Potential Holder. Accordingly, the Auction
Procedures establish the Maximum Rate as a maximum rate per annum that can
result from an Auction. See "Determination of Sufficient Clearing Bids, Winning
Bid Rate and Applicable Rate" and "Acceptance and Rejection of Submitted Bids
and Submitted Sell Orders and Allocation of Shares" below.

     As used herein, "Maximum Rate," when used with respect to shares of
Municipal Preferred on an Auction Date, means:

          (i) in the case of any Auction Date which is not the Auction Date
     immediately prior to the first day of any proposed Special Rate Period, the
     product of (1) the Reference Rate on such Auction Date for the next Rate
     Period and (2) the Rate Multiple on such Auction Date, unless such shares
     have or had a Special Rate Period (other than a Special Rate Period of 28
     Rate Period Days or fewer) and an Auction at which Sufficient Clearing Bids
     existed has not yet occurred for a Minimum Rate Period after such Special
     Rate Period, in which case the higher of:

             (A) the dividend rate on such shares for the then-ending Rate
        Period; and

             (B) the product of (x) the higher of (I) the Reference Rate on such
        Auction Date for a Rate Period equal in length to the then-ending Rate
        Period, if such then-ending Rate Period was 364 Rate Period Days or
        fewer, or the Treasury Note Rate on such Auction Date for a Rate Period
        equal in length to the then-ending Rate Period, if such then-ending Rate
        Period was more

                                      B-16
<PAGE>   64

        than 364 Rate Period Days, and (II) the Reference Rate on such Auction
        Date for a Rate Period equal in length to such Special Rate Period, if
        such Special Rate Period was 364 Rate Period Days or fewer, or the
        Treasury Note Rate on such Auction Date for a Rate Period equal in
        length to such Special Rate Period, if such Special Rate Period was more
        than 364 Rate Period Days and (y) the Rate Multiple on such Auction
        Date; or

          (ii) in the case of any Auction Date which is the Auction Date
     immediately prior to the first day of any proposed Special Rate Period, the
     product of (1) the highest of (x) the Reference Rate on such Auction Date
     for a Rate Period equal in length to the then-ending Rate Period, if such
     then-ending Rate Period was 364 Rate Period Days or fewer, or the Treasury
     Note Rate on such Auction Date for a Rate Period equal in length to the
     then-ending Rate Period, if such then-ending Rate Period was more than 364
     Rate Period Days, (y) the Reference Rate on such Auction Date for the
     Special Rate Period for which the Auction is being held if such Special
     Rate Period is 364 Rate Period Days or fewer or the Treasury Note Rate on
     such Auction Date for the Special Rate Period for which the Auction is
     being held if such Special Rate Period is more than 364 Rate Period Days,
     and (z) the Reference Rate on such Auction Date for Minimum Rate Periods
     and (2) the Rate Multiple on such Auction Date.

     As used herein, "Reference Rate" shall mean (i) the higher of the Taxable
Equivalent of the Short-Term Municipal Bond Rate and the "AA" Composite
Commercial Paper Rate in the case of Minimum Rate Periods and Special Rate
Periods of 28 Rate Period Days or fewer; (ii) the "AA" Composite Commercial
Paper Rate in the case of Special Rate Periods of more than 28 Rate Period Days
but fewer than 183 Rate Period Days; and (iii) the Treasury Bill Rate in the
case of Special Rate Periods of more than 182 Rate Period Days but fewer than
365 Rate Period Days.

     As used herein, "Taxable Equivalent of the Short-Term Municipal Bond Rate,"
on any date for any Minimum Rate Period or Special Rate Period of 28 Rate Period
Days or fewer, shall mean 90% of the quotient of (A) the per annum rate
expressed on an interest equivalent basis equal to the Standard & Poor's Kenny
30 day High Grade Index or any successor index (the "Kenny Index") (provided,
however, that any such successor index must be approved by Moody's (if Moody's
is then rating the shares of Municipal Preferred) and Standard & Poor's (if
Standard & Poor's is then rating the shares of Municipal Preferred)), made
available for the Business Day immediately preceding such date but in any event
not later than 8:30 A.M., Eastern time, on such date by Standard & Poor's J.J.
Kenny Evaluation Services or any successor thereto, based upon 30-day yield
evaluations at par of short-term bonds, the interest on which is excludable for
regular Federal income tax purposes under the Code, of "high grade" component
issuers selected by Standard & Poor's J.J. Kenny Evaluation Services or any such
successor from time to time in its discretion, which component issuers shall
include, without limitation, issuers of general obligation bonds but shall
exclude any bonds the interest on which constitutes an item of tax preference
under Section 57(a)(5) of the Code, or successor provisions, for purposes of the
"alternative minimum tax," divided by (B) 1.00 minus the greater of the maximum
marginal regular Federal individual income tax rate applicable to ordinary
income or the maximum marginal regular Federal corporate income tax rate
applicable to ordinary income (in each case expressed as a decimal); provided,
however, that if the Kenny Index is not made so available by 8:30 A.M., Eastern
time, on such date by Standard & Poor's J.J. Kenny Evaluation Services or any
successor, the Taxable Equivalent of the Short-Term Municipal Bond Rate shall
mean the quotient of (A) the per annum rate expressed on an interest equivalent
basis equal to the most recent Kenny Index so made available for any preceding
Business Day, divided by (B) 1.00 minus the greater of the maximum marginal
regular Federal individual income tax rate applicable to ordinary income or the
maximum marginal regular Federal corporate income tax rate applicable to
ordinary income (in each case expressed as a decimal).

     As used herein, "'AA' Composite Commercial Paper Rate," on any date for any
Rate Period, means:

          (i) (A) in the case of any Minimum Rate Period or any Special Rate
     Period of fewer than 49 Rate Period Days, the interest equivalent of the
     30-day rate; provided, however, that if such Rate Period is a Minimum Rate
     Period and the "AA" Composite Commercial Paper Rate is being used to

                                      B-17
<PAGE>   65

     determine the Applicable Rate when all of the outstanding shares of
     Municipal Preferred are subject to Submitted Hold Orders, then the interest
     equivalent of the seven-day rate, and (B) in the case of any Special Rate
     Period of (1) 49 or more but fewer than 70 Rate Period Days, the interest
     equivalent of the 60-day rate; (2) 70 or more but fewer than 85 Rate Period
     Days, the arithmetic average of the interest equivalent of the 60-day and
     90-day rates; (3) 85 or more but fewer than 99 Rate Period Days, the
     interest equivalent of the 90-day rate; (4) 99 or more but fewer than 120
     Rate Period Days, the arithmetic average of the interest equivalent of the
     90-day and 120-day rates; (5) 120 or more but fewer than 141 Rate Period
     Days, the interest equivalent of the 120-day rate; (6) 141 or more but
     fewer than 162 Rate Period Days, the arithmetic average of the 120-day and
     180-day rates; and (7) 162 or more but fewer than 183 Rate Period Days, the
     interest equivalent of the 180-day rate, in each case on commercial paper
     placed on behalf of issuers whose corporate bonds are rated "AA" by
     Standard & Poor's or the equivalent of such rating by Standard & Poor's or
     another rating agency, as made available on a discount basis or otherwise
     by the Federal Reserve Bank of New York for the Business Day immediately
     preceding such date; or

          (ii) in the event that the Federal Reserve Bank of New York does not
     make available any such rate, then the arithmetic average of such rates, as
     quoted on a discount basis or otherwise, by the Commercial Paper Dealers to
     the Auction Agent for the close of business on the Business Day next
     preceding such date.

If any Commercial Paper Dealer does not quote a rate required to determine the
"AA" Composite Commercial Paper Rate, the "AA" Composite Commercial Paper Rate
shall be determined on the basis of the quotation or quotations furnished by the
remaining Commercial Paper Dealer or Commercial Paper Dealers and any Substitute
Commercial Paper Dealer or Substitute Commercial Paper Dealers selected by the
Trust to provide such rate or rates not being supplied by any Commercial Paper
Dealer or Commercial Paper Dealers, as the case may be, or, if the Trust does
not select any such Substitute Commercial Paper Dealer or Substitute Commercial
Paper Dealers, by the remaining Commercial Paper Dealer or Commercial Paper
Dealers. For purposes of this definition, the "interest equivalent" of a rate
stated on a discount basis (a "discount rate") for commercial paper of a given
days' maturity shall be equal to the quotient (rounded upwards to the next
higher one-thousandth (0.001) of 1%) of (A) the discount rate divided by (B) the
difference between (x) 1.00 and (y) a fraction the numerator of which shall be
the product of the discount rate times the number of days in which such
commercial paper matures and the denominator of which shall be 360. As used
herein, "Commercial Paper Dealers" means Lehman Commercial Paper Incorporated,
Goldman, Sachs & Co. and Merrill Lynch, Pierce, Fenner & Smith Incorporated and
such other commercial paper dealer or dealers as the Trust may from time to time
appoint, or, in lieu of any thereof, their respective affiliates or successors.
As used herein, "Substitute Commercial Paper Dealer" means CS First Boston
Corporation or Morgan Stanley & Co. Incorporated or their respective affiliates
or successors, if such entity is a commercial paper dealer, provided that none
of such entities shall be a Commercial Paper Dealer.

     As used herein, "Treasury Bill Rate," on any date for any Rate Period,
means:

          (i) the bond equivalent yield, calculated in accordance with
     prevailing industry convention, of the rate on the most recently auctioned
     Treasury Bill with a remaining maturity closest to the length of such Rate
     Period, as quoted in The Wall Street Journal on such date for the Business
     Day next preceding such date; or

          (ii) in the event that any such rate is not published in The Wall
     Street Journal, then the bond equivalent yield, calculated in accordance
     with prevailing industry convention, as calculated by reference to the
     arithmetic average of the bid price quotations of the most recently
     auctioned Treasury Bill with a remaining maturity closest to the length of
     such Rate Period, as determined by bid price quotations as of the close of
     business on the Business Day immediately preceding such date obtained from
     the U.S. Government Securities Dealers to the Auction Agent.

                                      B-18
<PAGE>   66

     As used herein, "Treasury Note Rate," on any date for any Rate Period,
means:

          (i) the yield on the most recently auctioned Treasury Note with a
     remaining maturity closest to the length of such Rate Period, as quoted in
     The Wall Street Journal on such date for the Business Day next preceding
     such date; or

          (ii) in the event that any such rate is not published in The Wall
     Street Journal, then the yield as calculated by reference to the arithmetic
     average of the bid price quotations of the most recently auctioned Treasury
     Note with a remaining maturity closest to the length of such Rate Period,
     as determined by bid price quotations as of the close of business on the
     Business Day immediately preceding such date obtained from the U.S.
     Government Securities Dealers to the Auction Agent.

     For purposes of the foregoing, "Treasury Bill" means a direct obligation of
the U.S. government having a maturity at the time of issuance of 364 days or
less, and "Treasury Note" means a direct obligation of the U.S. government
having a maturity at the time of issuance of five years or less but more than
364 days. If any U.S. Government Securities Dealer does not quote a rate
required to determine the Treasury Bill Rate or the Treasury Note Rate, such
rate shall be determined on the basis of the quotation or quotations furnished
by the remaining U.S. Government Securities Dealer or U.S. Government Securities
Dealers and any Substitute U.S. Government Securities Dealers selected by the
Trust to provide such rate or rates not being supplied by any U.S. Government
Securities Dealer or U.S. Government Securities Dealers, as the case may be, or,
if the Trust does not select any such Substitute U.S. Government Securities
Dealer or Substitute U.S. Government Securities Dealers, by the remaining U.S.
Government Securities Dealer or U.S. Government Securities Dealers. As used
herein, "U.S. Government Securities Dealer" means Lehman Government Securities
Incorporated, Goldman, Sachs & Co., Salomon Smith Barney Inc. and Morgan
Guaranty Trust Company of New York or their respective affiliates or successors,
if such entity is a U.S. government securities dealer. As used herein,
"Substitute U.S. Government Securities Dealer" shall mean CS First Boston
Corporation and Merrill Lynch, Pierce, Fenner & Smith Incorporated or their
respective affiliates or successors, if such entity is a U.S. government
securities dealer, provided that none of such entities shall be a U.S.
Government Securities Dealer.

     The applicable "AA" Composite Commercial Paper Rates, Taxable Equivalent of
the Short-Term Municipal Bond Rates, Treasury Bill Rates and Treasury Note Rates
will be the rates announced on such Auction Date for the Business Day
immediately prior to such Auction Date.

     The "Rate Multiple" will be a percentage, determined as set forth below,
based on the prevailing rating of shares of Municipal Preferred in effect at the
close of business on the Business Day next preceding such Auction Date:

<TABLE>
<CAPTION>
PREVAILING RATING                                           PERCENTAGE
- -----------------                                           ----------
<S>                                                         <C>
"aa3"/AA- or higher.......................................     110%
"a3"/A-...................................................     125%
"baa3"/BBB-...............................................     150%
"ba3"/BB-.................................................     200%
Below "ba3"/BB-...........................................     250%
</TABLE>

provided, however, that in the event the Trust has notified the Auction Agent of
its intent to allocate income taxable for Federal income tax purposes to shares
of Municipal Preferred prior to the Auction establishing the Applicable Rate for
such shares, the applicable percentage in the foregoing table shall be divided
by the quantity 1 minus the greater of the maximum marginal regular Federal
individual income tax rate applicable to ordinary income or the maximum marginal
regular Federal corporate income tax rate applicable to ordinary income. If the
shares of Municipal Preferred are rated by only one rating agency, such rating
will be the prevailing rating.

     For purposes of this definition, the "prevailing rating" of shares of
Municipal Preferred shall be (i) "aa3"/AA- or higher if such shares have a
rating of "aa3" or better by Moody's and AA- or better by

                                      B-19
<PAGE>   67

Standard & Poor's or the equivalent of such ratings by such agencies or a
substitute rating agency or substitute rating agencies selected as provided
below, (ii) if not "aa3"/AA- or higher, then "a3"/A- if such shares have a
rating of "a3" or better by Moody's and A- or better by Standard & Poor's or the
equivalent of such ratings by such agencies or a substitute rating agency or
substitute rating agencies selected as provided below, (iii) if not "aa3"/AA- or
higher or "a3"/A-, then "baa3"/BBB- if such shares have a rating of "baa3" or
better by Moody's and BBB- or better by Standard & Poor's or the equivalent of
such ratings by such agencies or a substitute rating agency or substitute rating
agencies selected as provided below, (iv) if not "aa3"/AA- or higher, "a3"/A- or
"baa3"/BBB-, then "ba3"/BB- if such shares have a rating of "ba3" or better by
Moody's and BB- or better by Standard & Poor's or the equivalent of such ratings
by such agencies or a substitute rating agency or substitute rating agencies
selected as provided below, and (v) if not "aa3"/AA- or higher, "a3"/A-,
"baa3"/BBB-, or "ba3"/BB-, then Below "ba3"/BB-; provided, however, that if such
shares are rated by only one rating agency, the prevailing rating shall be
determined without reference to the rating of any other rating agency. The Trust
will take all reasonable action necessary to enable either Standard & Poor's or
Moody's to provide a rating for shares of Municipal Preferred. If neither
Standard & Poor's nor Moody's shall make such a rating available, Salomon Smith
Barney Inc. or its successor shall select at least one nationally recognized
statistical rating organization (as that term is used in the rules and
regulations of the SEC under the Securities Exchange Act of 1934, as amended) to
act as a substitute rating agency in respect of the shares of Municipal
Preferred, and the Trust shall take all reasonable action to enable such rating
agency to provide a rating for such shares.

SUBMISSION OF ORDERS BY BROKER-DEALERS TO AUCTION AGENT

     Prior to 1:30 P.M., Eastern time, on each Auction Date, or such other time
on the Auction Date specified by the Auction Agent (the "Submission Deadline"),
each Broker-Dealer will submit to the Auction Agent in writing all Orders
obtained by it for the Auction to be conducted on such Auction Date, designating
itself (unless otherwise permitted by the Trust) as the Existing Holder or
Potential Holder, as the case may be, in respect of the shares of Municipal
Preferred subject to such Orders. Any Order submitted by a Beneficial Owner or a
Potential Beneficial Owner to its Broker-Dealer, or by a Broker-Dealer to the
Auction Agent, prior to the Submission Deadline on any Auction Date, shall be
irrevocable.

     If any rate specified in any Bid contains more than three figures to the
right of the decimal point, the Auction Agent will round such rate to the next
highest one-thousandth (0.001) of 1%.

     If one or more Orders of an Existing Holder is submitted to the Auction
Agent covering in the aggregate more than the number of outstanding shares of
Municipal Preferred subject to an Auction held by such Existing Holder, such
Orders will be considered valid in the following order of priority:

          (a) all Hold Orders will be considered valid, but only up to and
     including in the aggregate the number of shares of Municipal Preferred held
     by such Existing Holder, and, if the number of shares subject to such Hold
     Orders exceeds the number of shares held by such Existing Holder, the
     number of shares subject to each such Hold Order shall be reduced pro rata
     to cover the number of shares held by such Existing Holder;

          (b) (i) any Bid will be considered valid up to and including the
     excess of the number of shares of Municipal Preferred held by such Existing
     Holder over the number of shares of Municipal Preferred subject to any Hold
     Orders referred to in clause (a) above;

             (ii) subject to subclause (i), if more than one Bid of an Existing
        Holder is submitted to the Auction Agent with the same rate and the
        number of shares of Municipal Preferred subject to such Bids is greater
        than such excess, such Bids will be considered valid up to and including
        the amount of such excess, and the number of shares of Municipal
        Preferred subject to each Bid with the same rate will be reduced pro
        rata to cover the number of shares of Municipal Preferred equal to such
        excess;

                                      B-20
<PAGE>   68

             (iii) subject to subclauses (i) and (ii), if more than one Bid of
        an Existing Holder is submitted to the Auction Agent with different
        rates, such Bids shall be considered valid in the ascending order of
        their respective rates up to and including the amount of such excess;
        and

             (iv) in any such event, the number, if any, of such shares subject
        to any portion of Bids considered not valid in whole or in part under
        this clause (b) will be treated as the subject of a Bid by or on behalf
        of a Potential Holder at the rate specified therein; and

          (c) all Sell Orders will be considered valid up to and including the
     excess of the number of outstanding shares of Municipal Preferred held by
     such Existing Holder over the sum of shares of Municipal Preferred subject
     to valid Hold Orders referred to in clause (a) above and valid Bids
     referred to in clause (b) above.

     If more than one Bid of a Potential Holder for shares of Municipal
Preferred is submitted to the Auction Agent by or on behalf of any Potential
Holder, each Bid submitted will be a separate Bid with the rate and number of
shares therein specified.

DETERMINATION OF SUFFICIENT CLEARING BIDS, WINNING BID RATE AND APPLICABLE RATE

     Not earlier than the Submission Deadline on each Auction Date, the Auction
Agent will assemble all valid Orders submitted or deemed submitted to it by the
Broker-Dealers (each such Hold Order, Bid or Sell Order as submitted or deemed
submitted by a Broker-Dealer being herein referred to as a "Submitted Hold
Order," a "Submitted Bid" or a "Submitted Sell Order," as the case may be, or as
a "Submitted Order" and collectively as "Submitted Hold Orders," "Submitted
Bids" or "Submitted Sell Orders," as the case may be, or as "Submitted Orders")
and will determine the excess of the number of outstanding shares of Municipal
Preferred over the number of outstanding shares of Municipal Preferred subject
to Submitted Hold Orders (such excess being herein referred to as the "Available
Municipal Preferred") and whether Sufficient Clearing Bids have been made in the
Auction. "Sufficient Clearing Bids" will have been made if the number of
outstanding shares of Municipal Preferred that are the subject of Submitted Bids
of Potential Holders specifying rates not higher than the Maximum Rate equals or
exceeds the number of outstanding shares of Municipal Preferred that are the
subject of Submitted Sell Orders (including the number of shares subject to Bids
of Existing Holders specifying rates higher than the Maximum Rate).

     If Sufficient Clearing Bids have been made, the Auction Agent will
determine the lowest rate specified in the Submitted Bids (the "Winning Bid
Rate") which, taking into account the rates in the Submitted Bids of Existing
Holders, would result in Existing Holders continuing to hold an aggregate number
of outstanding shares of Municipal Preferred which, when added to the number of
outstanding shares of Municipal Preferred to be purchased by Potential Holders,
based on the rates in their Submitted Bids, would equal not less than the
Available Municipal Preferred. In such event, the Winning Bid Rate will be the
Applicable Rate for the next Rate Period for all shares of Municipal Preferred.

     If Sufficient Clearing Bids have not been made (other than because all of
the outstanding shares of Municipal Preferred are subject to Submitted Hold
Orders), the Applicable Rate for the next Rate Period for all shares of
Municipal Preferred will be equal to the Maximum Rate. If Sufficient Clearing
Bids have not been made, Beneficial Owners that have submitted or that are
deemed to have submitted Sell Orders may not be able to sell in the Auction all
shares of Municipal Preferred subject to such Sell Orders but will continue to
own shares of Municipal Preferred for the next Rate Period, dividends for which
may include income taxable to such Beneficial Owners. See "The
Auction -- Auction Dates; Advance Notice of Allocation of Taxable Income" above
and "Acceptance and Rejection of Submitted Bids and Submitted Sell Orders and
Allocation of Shares" below.

     If all of the outstanding shares of Municipal Preferred are subject to
Submitted Hold Orders, the Applicable Rate for the next Rate Period will be the
lesser of the Kenny Index (if such Rate Period consists of fewer than 183 Rate
Period Days) or the product of (i) (1) the "AA" Composite Commercial Paper Rate
on the Auction Date for such Rate Period, if such Rate Period consists of fewer
than 183 Rate Period Days; (2) the Treasury Bill Rate on such Auction Date for
such Rate Period, if such Rate Period

                                      B-21
<PAGE>   69

consists of more than 182 but fewer than 365 Rate Period Days; or (3) the
Treasury Note Rate on such Auction Date for such Rate Period, if such Rate
Period is more than 364 Rate Period Days (the rate described in the foregoing
clause (i)(1), (2) or (3) as applicable, being referred to herein as the
"Benchmark Rate") and (ii) 1 minus the maximum marginal regular Federal
individual income tax rate applicable to ordinary income or the maximum marginal
regular Federal corporate income tax rate applicable to ordinary income,
whichever is greater; provided, however, that if the Trust has notified the
Auction Agent of its intent to allocate to shares of Municipal Preferred in such
Rate Period any net capital gain or other income taxable for Federal income tax
purposes ("Taxable Income"), the Applicable Rate for shares of Municipal
Preferred for such Rate Period will be (A) if the Taxable Yield Rate (as defined
below) is greater than the Benchmark Rate, then the Benchmark Rate, or (B) if
the Taxable Yield Rate is less than or equal to the Benchmark Rate, then the
rate equal to the sum of (x) the lesser of the Kenny Index (if such Rate Period
consists of fewer than 183 Rate Period Days) or the product of the Benchmark
Rate multiplied by the factor set forth in the preceding clause (ii) and (y) the
product of the maximum marginal regular Federal individual income tax rate
applicable to ordinary income or the maximum marginal regular Federal corporate
income tax applicable to ordinary income, whichever is greater, multiplied by
the Taxable Yield Rate. For purposes of the foregoing, "Taxable Yield Rate"
means the rate determined by (a) dividing the amount of Taxable Income available
for distribution per share of Municipal Preferred by the number of days in the
Dividend Period in respect of which such Taxable Income is contemplated to be
distributed, (b) multiplying the amount determined in (a) above by 365 (in the
case of a Dividend Period of 7 Rate Period Days) or 360 (in the case of any
other Dividend Period), and (c) dividing the amount determined in (b) above by
$25,000. In calculating the "AA" Composite Commercial Paper Rate, the Treasury
Bill Rate and the Treasury Note Rate for such purpose, the rates used will be
the rates or yields specified in the applicable definitions of "AA" Composite
Commercial Paper Rate, Treasury Bill Rate and Treasury Note Rate set forth under
"The Auction -- Orders by Existing Holders and Potential Holders."

ACCEPTANCE AND REJECTION OF SUBMITTED BIDS AND SUBMITTED SELL ORDERS AND
ALLOCATION OF SHARES

     Based on the determinations made under "Determination of Sufficient
Clearing Bids, Winning Bid Rate and Applicable Rate" above and, subject to the
discretion of the Auction Agent to round and allocate certain shares as
described below, Submitted Bids and Submitted Sell Orders will be accepted or
rejected in the order of priority set forth in the Auction Procedures, with the
result that Existing Holders and Potential Holders of shares of Municipal
Preferred will sell, continue to hold and/or purchase such shares as set forth
below. Existing Holders that submitted or were deemed to have submitted Hold
Orders (or on whose behalf Hold Orders were submitted or deemed to have been
submitted) will continue to hold the shares of Municipal Preferred subject to
such Hold Orders.

     If Sufficient Clearing Bids have been made:

          (a) Each Existing Holder that placed or on whose behalf was placed a
     Submitted Sell Order or Submitted Bid specifying any rate higher than the
     Winning Bid Rate will sell the outstanding shares of Municipal Preferred
     subject to such Submitted Sell Order or Submitted Bid;

          (b) Each Existing Holder that placed or on whose behalf was placed a
     Submitted Bid specifying a rate lower than the Winning Bid Rate will
     continue to hold the outstanding shares of Municipal Preferred subject to
     such Submitted Bid;

          (c) Each Potential Holder that placed or on whose behalf was placed a
     Submitted Bid specifying a rate lower than the Winning Bid Rate will
     purchase the number of outstanding shares of Municipal Preferred subject to
     such Submitted Bid;

          (d) Each Existing Holder that placed or on whose behalf was placed a
     Submitted Bid specifying a rate equal to the Winning Bid Rate will continue
     to hold the shares of Municipal Preferred subject to such Submitted Bid,
     unless the number of outstanding shares of Municipal Preferred subject to
     all such Submitted Bids is greater than the number of shares of Municipal
     Preferred in excess of the Available Municipal Preferred over the number of
     shares of Municipal Preferred accounted for in

                                      B-22
<PAGE>   70

     clauses (b) and (c) above, in which event each Existing Holder with such a
     Submitted Bid will continue to hold a number of outstanding shares of
     Municipal Preferred subject to such Submitted Bid determined on a pro rata
     basis based on the number of outstanding shares of Municipal Preferred
     subject to all such Submitted Bids of such Existing Holders; and

          (e) Each Potential Holder that placed or on whose behalf was placed a
     Submitted Bid specifying a rate equal to the Winning Bid Rate will purchase
     any shares of Available Municipal Preferred not accounted for in clauses
     (b) through (d) above on a pro rata basis based on the outstanding shares
     of Municipal Preferred subject to all such Submitted Bids.

     If Sufficient Clearing Bids have not been made (unless this results because
all outstanding shares of Municipal Preferred are subject to Submitted Hold
Orders):

          (a) Each Existing Holder that placed or on whose behalf was placed a
     Submitted Bid specifying a rate equal to or lower than the Maximum Rate
     will continue to hold the outstanding shares of Municipal Preferred subject
     to such Submitted Bid;

          (b) Each Potential Holder that placed or on whose behalf was placed a
     Submitted Bid specifying a rate equal to or lower than the Maximum Rate
     will purchase the number of outstanding shares of Municipal Preferred
     subject to such Submitted Bid; and

          (c) Each Existing Holder that placed or on whose behalf was placed a
     Submitted Bid specifying a rate higher than the Maximum Rate or a Submitted
     Sell Order will sell a number of shares of Municipal Preferred determined
     on a pro rata basis based on the number of outstanding shares of Municipal
     Preferred subject to all such Submitted Bids and Submitted Sell Orders.

     If, as a result of the pro rata allocation described in clauses (d) or (e)
of the second preceding paragraph or clause (c) of the next preceding paragraph,
any Existing Holder would be entitled or required to sell, or any Potential
Holder would be entitled or required to purchase, a fraction of a share of
Municipal Preferred, the Auction Agent will, in such manner as, in its sole
discretion, it will determine, round up or down to the nearest whole share the
number of shares of Municipal Preferred being sold or purchased on such Auction
Date so that the number of shares sold or purchased by each Existing Holder or
Potential Holder will be whole shares of Municipal Preferred. If as a result of
the pro rata allocation described in clause (e) of the second preceding
paragraph, any Potential Holder would be entitled or required to purchase less
than a whole share of Municipal Preferred, the Auction Agent will, in such
manner as, in its sole discretion, it will determine, allocate shares of
Municipal Preferred for purchase among Potential Holders so that only whole
shares of Municipal Preferred are purchased by any such Potential Holder, even
if such allocation results in one or more of such Potential Holders not
purchasing shares of Municipal Preferred.

NOTIFICATION OF RESULTS; SETTLEMENT

     The Auction Agent will be required to advise each Broker-Dealer that
submitted an Order of the Applicable Rate for the next Rate Period and, if the
Order was a Bid or Sell Order, whether such Bid or Sell Order was accepted or
rejected, in whole or in part, by telephone by approximately 3:00 P.M., Eastern
time, on each Auction Date. Each Broker-Dealer that submitted an Order for the
account of a customer will then be required to advise such customer of the
Applicable Rate for the next Rate Period and, if such Order was a Bid or a Sell
Order, whether such Bid or Sell Order was accepted or rejected, in whole or in
part, will be required to confirm purchases and sales with each customer
purchasing or selling shares of Municipal Preferred as a result of the Auction
and will be required to advise each customer purchasing or selling shares of
Municipal Preferred as a result of the Auction to give instructions to its Agent
Member of the Securities Depository to pay the purchase price against delivery
of such shares or to deliver such shares against payment therefor, as
appropriate. The Auction Agent will be required to record each transfer of
shares of Municipal Preferred on the registry of Existing Holders to be
maintained by the Auction Agent. See "General" above.

                                      B-23
<PAGE>   71

     In accordance with the Securities Depository's normal procedures, on the
Business Day after the Auction Date, the transactions described above will be
executed through the Securities Depository and the accounts of the respective
Agent Members at the Securities Depository will be debited and credited and
shares delivered as necessary to effect the purchases and sales of shares of
Municipal Preferred as determined in the Auction. Purchasers will make payment
through their Agent Members in same-day funds to the Securities Depository
against delivery through their Agent Members; the Securities Depository will
make payment in accordance with its normal procedures, which now provide for
payment against delivery by their Agent Members in same-day funds. The
settlement procedures to be used with respect to Auctions for shares of
Municipal Preferred are set forth in Appendix C hereto.

     If any Existing Holder selling shares of Municipal Preferred in an Auction
fails to deliver such shares, the Broker-Dealer of any person that was to have
purchased shares of Municipal Preferred in such Auction may deliver to such
person a number of whole shares of Municipal Preferred that is less than the
number of shares that otherwise was to be purchased by such person. In such
event, the number of shares of Municipal Preferred to be so delivered shall be
determined by such Broker-Dealer. Delivery of such lesser number of shares shall
constitute good delivery.

CONCERNING THE AUCTION AGENT

     The Auction Agent is acting as agent for the Trust in connection with
Auctions. In the absence of bad faith or negligence on its part, the Auction
Agent will not be liable for any action taken, suffered, or omitted or for any
error of judgment made by it in the performance of its duties under the Auction
Agency Agreement and will not be liable for any error of judgment made in good
faith unless the Auction Agent will have been negligent in ascertaining the
pertinent facts.

     The Auction Agent may rely upon, as evidence of the identities of the
Existing Holders of shares of Municipal Preferred, a list of initial owners of
such shares provided by the Trust, the results of Auctions, notices from any
Broker-Dealer (or other Person, if permitted by the Trust) with respect to
transfers described in the Prospectus under "The Auction -- Secondary Market
Trading and Transfer of Municipal Preferred" and notices from the Trust. The
Auction Agent is not required to accept any such notice for an Auction unless it
is received by the Auction Agent by 3:00 P.M., Eastern time, on the Business Day
preceding such Auction.

     The Auction Agent will be the transfer agent, registrar, dividend
disbursing agent and redemption agent for shares of Municipal Preferred. The
registrar for shares of Municipal Preferred will send notices to holders of
shares of Municipal Preferred of any special meetings at which holders of
Municipal Preferred have the right to elect trustees of the Trust. See
"Description of Municipal Preferred -- Voting Rights" below.

     The Auction Agent may terminate the Auction Agency Agreement upon notice to
the Trust on a date no earlier than 45 days after such notice. If the Auction
Agent should resign, the Trust will use its best efforts to enter into an
agreement with a successor Auction Agent containing substantially the same terms
and conditions as the Auction Agency Agreement. The Trust may remove the Auction
Agent provided that prior to such removal the Trust shall have entered into such
an agreement with a successor Auction Agent.

BROKER-DEALERS

     The Auction Agent after each Auction for shares of Municipal Preferred will
pay to each Broker-Dealer, from funds provided by the Trust, a service charge at
the annual rate of 1/4 of 1% in the case of any Auction immediately preceding a
Rate Period of less than one year, or a percentage agreed to by the Trust and
the Broker-Dealers in the case of any Auction immediately preceding a Rate
Period of one year or longer, of the purchase price of shares of Municipal
Preferred placed by such Broker-Dealer at such Auction. For the purposes of the
preceding sentence, shares of Municipal Preferred will be placed by a
Broker-Dealer if such shares were (i) the subject of Hold Orders deemed to have
been submitted to the Auction Agent by the Broker-Dealer and were acquired by
such Broker-Dealer for its own account or were
                                      B-24
<PAGE>   72

acquired by such Broker-Dealer for its customers who are Beneficial Owners or
(ii) the subject of an Order submitted by such Broker-Dealer that is (A) a
Submitted Bid of an Existing Holder that resulted in such Existing Holder
continuing to hold such shares as a result of the Auction or (B) a Submitted Bid
of a Potential Holder that resulted in such Potential Holder purchasing such
shares as a result of the Auction or (C) a valid Hold Order.

     The Trust may request the Auction Agent to terminate one or more
Broker-Dealer Agreements at any time, provided that at least one Broker-Dealer
Agreement is in effect after such termination.

     The Broker-Dealer Agreements provide that a Broker-Dealer (other than an
affiliate of the Trust) may submit Orders in Auctions for its own account,
unless the Trust notifies all Broker-Dealers that they may no longer do so, in
which case Broker-Dealers may continue to submit Hold Orders and Sell Orders for
their own accounts. Any Broker-Dealer that is an affiliate of the Trust may
submit Orders in Auctions, but only if such Orders are not for its own account.
If a Broker-Dealer submits an Order for its own account in any Auction, it might
have an advantage over other Bidders because it would have knowledge of all
Orders submitted by it in that Auction; such Broker-Dealer, however, would not
have knowledge of Orders submitted by other Broker-Dealers in that Auction.

     The Broker-Dealers expect, but are not obligated, to maintain a secondary
trading market in shares of Municipal Preferred outside of Auctions. There can
be no assurance that a secondary trading market in shares of Municipal Preferred
will develop or, if it does develop, that it will provide owners with liquidity
of investment. The shares of Municipal Preferred will not be registered on any
stock exchange or on the National Association of Securities Dealers Automated
Quotations system.

                       DESCRIPTION OF MUNICIPAL PREFERRED

     The descriptions of the shares of Municipal Preferred contained in the
Prospectus and this Statement of Additional Information do not purport to be
complete and are subject to and qualified in their entireties by reference to
the Declaration and the By-Laws. Copies of the Declaration and the form of the
By-Laws are filed as exhibits to the Registration Statement of which the
Prospectus and this Statement of Additional Information are a part and may be
inspected, and copies thereof may be obtained, as described under "Further
Information" in the Prospectus.

GENERAL

     The shares of Municipal Preferred will rank on a parity with each other,
with shares of any other series of Municipal Preferred and with shares of any
other series of Preferred Shares as to the payment of dividends and the
distribution of assets upon dissolution, liquidation or winding up of the
affairs of the Trust.

DIVIDENDS

     GENERAL.  The holders of shares of Municipal Preferred offered pursuant to
the Prospectus will be entitled to receive, when, as and if declared by the
Board of Trustees, out of funds legally available therefor in accordance with
the Declaration, the By-Laws and applicable law, cumulative cash dividends at
the Applicable Rate thereof, determined as set forth below under "Determination
of Dividend Rate," and no more (except as otherwise provided below under
"Gross-up Payments"), payable on the respective dates determined as set forth
below. Holders of shares of Municipal Preferred shall not be entitled to any
dividend, whether payable in cash, property or shares, in excess of full
cumulative dividends on shares of Municipal Preferred. No interest, or sum of
money in lieu of interest, will be payable in respect of any dividend payment or
payments on shares of Municipal Preferred which may be in arrears, and, except
as otherwise provided herein, no additional sum of money will be payable in
respect of any such arrearage.

     Dividends on shares of Municipal Preferred shall accumulate at the
Applicable Rate from the Date of Original Issue and, except as provided below,
shall be payable on Tuesday,                  , 1999, and thereafter on each
Tuesday; provided, however, that (1) if the Tuesday on which dividends would
                                      B-25
<PAGE>   73

otherwise be payable as set forth above is not a Business Day, then dividends
shall be payable instead on the first Business Day that falls after such Tuesday
and (2) the Trust in its discretion may establish Dividend Payment Dates in
respect of any Special Rate Period of such shares consisting of more than 28
Rate Period Days that differ from those set forth above; provided, however, that
such dates shall be set forth in the Notice of Special Rate Period relating to
such Special Rate Period, as delivered to the Auction Agent and filed with the
Secretary of the Trust; and further provided that (1) any such Dividend Payment
Date shall be a Business Day and (2) the last Dividend Payment Date in respect
of such Special Rate Period shall be the Business Day immediately following the
last day thereof, as such last day is determined as set forth below under
"Designation of Special Rate Periods."

     The amount of dividends per share payable on shares of Municipal Preferred
on any date on which dividends shall be payable on such shares shall be computed
by multiplying the Applicable Rate in effect for such Dividend Period or
Dividend Periods or part thereof for which dividends have not been paid by a
fraction, the numerator of which shall be the number of days in such Dividend
Period or Dividend Periods or part thereof and the denominator of which shall be
365 if such Dividend Period consists of 7 Rate Period Days and 360 for all other
Dividend Periods, and applying the rate obtained against $25,000. Any dividend
payment made on shares of Municipal Preferred shall first be credited against
the earliest accumulated but unpaid dividends due with respect to such shares.

     Each dividend on shares of Municipal Preferred will be paid on the Dividend
Payment Date therefor to the holders of record as their names appear on the
record books of the Trust on the Business Day next preceding such Dividend
Payment Date. Dividends in arrears for any past Dividend Period may be declared
and paid at any time, without reference to any regular Dividend Payment Date, to
the holders of record as their names appear on the record books of the Trust on
such date, not exceeding 15 days preceding the payment date thereof, as may be
fixed by the Board of Trustees.

     The Securities Depository, in accordance with its current procedures, is
expected to credit on each Dividend Payment Date dividends received from the
Trust to the accounts of the respective Agent Members in next-day funds. Each of
the initial Broker-Dealers, however, has represented to the Trust that such
Broker-Dealer (or if such Broker-Dealer does not act as Agent Member, the Agent
Member designated by such Broker-Dealer) will make such dividend payments
available in same-day funds on each Dividend Payment Date to Beneficial Owners
that use such Broker-Dealer or its designee as Agent Member. A Beneficial Owner
of shares of Municipal Preferred that does not use one of the initial Broker-
Dealers or a designee thereof as its Agent Member should contact the Agent
Member used by such Beneficial Owner to determine whether such Agent Member will
make dividend payments available to such Beneficial Owner in next-day or
same-day funds. If any Agent Member does not make such dividends available in
same-day funds to a Beneficial Owner, such Beneficial Owner who uses such Agent
Member would not have same-day funds available to it until the next Business
Day, which, in the case of a Dividend Payment Date that is a Tuesday, would be
the following Wednesday if it is a Business Day.

     DETERMINATION OF DIVIDEND RATE.  The dividend rates on shares of Municipal
Preferred offered pursuant to the Prospectus during the period from and after
the Date of Original Issue thereof to and including the last day of the Initial
Rate Period therefor will be equal to the rate per annum set forth with respect
to such shares on the cover page of the Prospectus. For each Subsequent Rate
Period thereafter, the dividend rate on such shares will be equal to the rate
per annum that results from an Auction on the Auction Date next preceding such
Subsequent Rate Period; provided, however, if:

          (i) an Auction for any Subsequent Rate Period is not held for any
     reason other than as described below, the dividend rate on such shares for
     such Subsequent Rate Period will be the Maximum Rate on the Auction Date
     therefor;

          (ii) any Failure to Deposit shall have occurred with respect to shares
     of Municipal Preferred during any Rate Period thereof (other than any
     Special Rate Period of more than 364 Rate Period Days or any Rate Period
     succeeding any Special Rate Period of more than 364 Rate Period Days during
     which a Failure to Deposit occurred that has not been cured), but, prior to
     12:00 Noon, Eastern time, on the third Business Day next succeeding the
     date on which such Failure to Deposit
                                      B-26
<PAGE>   74

     occurred, such Failure to Deposit shall have been cured in accordance with
     the next succeeding paragraph and the Trust shall have paid to the Auction
     Agent a late charge ("Late Charge") equal to the sum of (1) if such Failure
     to Deposit consisted of the failure timely to pay to the Auction Agent the
     full amount of dividends with respect to any Dividend Period of such
     shares, an amount computed by multiplying (x) 200% of the Reference Rate
     for the Rate Period during which such Failure to Deposit occurs on the
     Dividend Payment Date for such Dividend Period by (y) a fraction, the
     numerator of which shall be the number of days for which such Failure to
     Deposit has not been cured in accordance with the next succeeding paragraph
     (including the day such Failure to Deposit occurs and excluding the day
     such Failure to Deposit is cured) and the denominator of which shall be
     360, and applying the rate obtained against the aggregate Liquidation
     Preference of the outstanding shares of Municipal Preferred and (2) if such
     Failure to Deposit consisted of the failure timely to pay to the Auction
     Agent the Redemption Price of the shares of Municipal Preferred, if any,
     for which a Notice of Redemption has been mailed by the Trust, an amount
     computed by multiplying (x) 200% of the Reference Rate for the Rate Period
     during which such Failure to Deposit occurs on the redemption date by (y) a
     fraction, the numerator of which shall be the number of days for which such
     Failure to Deposit is not cured in accordance with the next succeeding
     paragraph (including the day such Failure to Deposit occurs and excluding
     the day such Failure to Deposit is cured) and the denominator of which
     shall be 360, and applying the rate obtained against the aggregate
     Liquidation Preference of the outstanding shares of Municipal Preferred to
     be redeemed, no Auction will be held in respect of shares of Municipal
     Preferred for the Subsequent Rate Period thereof and the dividend rate for
     such Subsequent Rate Period will be the Maximum Rate on the Auction Date
     for such Subsequent Rate Period;

          (iii) any Failure to Deposit shall have occurred with respect to
     shares of Municipal Preferred during any Rate Period thereof (other than
     any Special Rate Period of more than 364 Rate Period Days or any Rate
     Period succeeding any Special Rate Period of more than 364 Rate Period Days
     during which a Failure to Deposit occurred that has not been cured), and,
     prior to 12:00 Noon, Eastern time, on the third Business Day next
     succeeding the date on which such Failure to Deposit occurred, such Failure
     to Deposit shall not have been cured in accordance with the next succeeding
     paragraph or the Trust shall not have paid the applicable Late Charge to
     the Auction Agent, no Auction will be held in respect of Municipal
     Preferred for the first Subsequent Rate Period thereof thereafter (or for
     any Rate Period thereafter to and including the Rate Period during which
     (1) such Failure to Deposit is cured in accordance with the next succeeding
     paragraph and (2) the Trust pays the applicable Late Charge to the Auction
     Agent (the condition set forth in this clause (2) to apply only in the
     event Moody's is rating such shares at the time the Trust cures such
     Failure to Deposit), in each case no later than 12:00 Noon, Eastern time,
     on the fourth Business Day prior to the end of such Rate Period), and the
     dividend rate for shares of Municipal Preferred for each such Subsequent
     Rate Period will be a rate per annum equal to the Maximum Rate on the
     Auction Date for such Subsequent Rate Period (but with the prevailing
     rating for such shares, for purposes of determining such Maximum Rate,
     being deemed to be "Below 'ba3'/BB-"); or

          (iv) any Failure to Deposit shall have occurred with respect to shares
     of Municipal Preferred during a Special Rate Period thereof of more than
     364 Rate Period Days, or during any Rate Period thereof succeeding any
     Special Rate Period of more than 364 Rate Period Days during which a
     Failure to Deposit occurred that has not been cured, and, prior to 12:00
     Noon, Eastern time, on the fourth Business Day preceding the Auction Date
     for the Rate Period subsequent to such Rate Period, such Failure to Deposit
     shall not have been cured in accordance with the next succeeding paragraph
     or, in the event Moody's is then rating such shares, the Trust shall not
     have paid the applicable Late Charge to the Auction Agent (such Late
     Charge, for purposes of this subparagraph (iv), to be calculated by using,
     as the Reference Rate, the Reference Rate applicable to a Rate Period (x)
     consisting of more than 182 Rate Period Days but fewer than 365 Rate Period
     Days and (y) commencing on the date on which the Rate Period during which
     Failure to Deposit occurs commenced), no Auction will be held in respect of
     shares of Municipal Preferred for such Subsequent Rate Period (or for any
     Rate Period thereafter to and including the Rate Period during
                                      B-27
<PAGE>   75

     which (1) such Failure to Deposit is cured in accordance with the next
     succeeding paragraph and (2) the Trust pays the applicable Late Charge to
     the Auction Agent (the condition set forth in this clause (2) to apply only
     in the event Moody's is rating such shares at the time the Trust cures such
     Failure to Deposit), in each case no later than 12:00 Noon, Eastern time,
     on the fourth Business Day prior to the end of such Rate Period), and the
     dividend rate for shares of Municipal Preferred for each such Subsequent
     Rate Period shall be a rate per annum equal to the Maximum Rate on the
     Auction Date for such Subsequent Rate Period (but with the prevailing
     rating for such shares, for purposes of determining such Maximum Rate,
     being deemed to be "Below 'ba3'/BB-") (the rate per annum at which
     dividends are payable on shares of Municipal Preferred for any Rate Period
     being herein referred to as the "Applicable Rate" for such shares).

     A Failure to Deposit with respect to shares of Municipal Preferred shall
have been cured (if such Failure to Deposit is not solely due to the willful
failure of the Trust to make the required payments to the Auction Agent) with
respect to any Rate Period if, within the respective time periods described
immediately above, the Trust shall have paid to the Auction Agent (i) all
accumulated and unpaid dividends on the shares of Municipal Preferred and (ii)
without duplication, the Redemption Price for the shares of Municipal Preferred,
if any, for which a Notice of Redemption has been mailed; provided, however,
that the foregoing clause (ii) shall not apply to the Trust's failure to pay the
Redemption Price in respect of shares of Municipal Preferred when the related
Notice of Redemption provides that redemption of such shares is subject to one
or more conditions precedent and any such condition precedent shall not have
been satisfied at the time or times and in the manner specified in such Notice
of Redemption.

     The Trust shall pay to the Auction Agent, not later than 12:00 noon,
Eastern time, on the Business Day next preceding each Dividend Payment Date for
shares of Municipal Preferred, an aggregate amount of funds available on the
next Business Day in The City of New York, New York, equal to the dividends to
be paid to all Holders of such shares on such Dividend Payment Date. All moneys
paid to the Auction Agent for the payment of dividends (or for payment of any
Late Charge) shall be held in trust for the payment of such dividends (and any
such Late Charge) by the Auction Agent for the benefit of the Holders specified
above. Any moneys paid to the Auction Agent in accordance with the foregoing but
not applied by the Auction Agent to the payment of dividends (and any such Late
Charge) will, to the extent permitted by law, be repaid to the Trust at the end
of 90 days from the date on which such moneys were so to have been applied.

     GROSS-UP PAYMENTS.  Holders of shares of Municipal Preferred shall be
entitled to receive, when, as and if declared by the Board of Trustees, out of
funds legally available therefor in accordance with the Declaration, the By-Laws
and applicable law, dividends in an amount equal to the aggregate Gross-up
Payment in accordance with the following:

     If, in the case of any Minimum Rate Period or any Special Rate Period of 28
Rate Period Days or fewer, the Trust allocates any net capital gain or other
income taxable for Federal income tax purposes to a dividend paid on shares of
Municipal Preferred without having given advance notice thereof to the Auction
Agent as described above under "The Auction -- Auction Dates; Advance Notice of
Allocation of Taxable Income" (such allocation is referred to herein as a
"Taxable Allocation") solely by reason of the fact that such allocation is made
retroactively as a result of the redemption of all or a portion of the
outstanding shares of Municipal Preferred or the dissolution, liquidation or
winding up of the affairs of the Trust, the Trust will, prior to the end of the
calendar year in which such dividend was paid, provide notice thereof to the
Auction Agent and direct the Trust's dividend disbursing agent to send such
notice with a Gross-up Payment to each holder of shares (initially Cede & Co.,
as nominee of the Securities Depository) that was entitled to such dividend
payment during such calendar year at such holder's address as the same appears
or last appeared on the record books of the Trust.

     If, in the case of any Special Rate Period of more than 28 Rate Period
Days, the Trust makes a Taxable Allocation to a dividend paid on shares of
Municipal Preferred, the Trust shall, prior to the end of the calendar year in
which such dividend was paid, provide notice thereof to the Auction Agent and
direct

                                      B-28
<PAGE>   76

the Trust's dividend disbursing agent to send such notice with a Gross-up
Payment to each holder of shares that was entitled to such dividend payment
during such calendar year at such holder's address as the same appears or last
appeared on the record books of the Trust.

     The Trust shall not be required to make Gross-up Payments with respect to
any net capital gain or other taxable income determined by the Internal Revenue
Service to be allocable in a manner different from that allocated by the Trust.

     A "Gross-up Payment" in respect of any dividend means payment to a holder
of shares of Municipal Preferred of an amount which, giving effect to the
Taxable Allocations made with respect to such dividend, would cause such
holder's after-tax returns (taking into account both the Taxable Allocations and
the Gross-up Payment) to be equal to the after-tax return the holder would have
received if no such Taxable Allocations had occurred. Such Gross-up Payment
shall be calculated: (i) without consideration being given to the time value of
money; (ii) assuming that no holder of shares of Municipal Preferred is subject
to the Federal alternative minimum tax with respect to dividends received from
the Trust; and (iii) assuming that each holder of shares of Municipal Preferred
is taxable at the maximum marginal regular Federal individual income tax rate
applicable to ordinary income or net capital gain, as applicable, or the maximum
marginal regular Federal corporate income tax rate applicable to ordinary income
or net capital gain, as applicable, whichever is greater, in effect at the time
such Gross-up Payment is made.

     RESTRICTIONS ON DIVIDENDS AND OTHER PAYMENTS.  Under the 1940 Act, the
Board of Trustees may not declare any dividend (except a dividend payable in
Common Shares), or declare any other distribution, upon Common Shares, or
purchase Common Shares, unless in every such case the Preferred Shares,
including the shares of Municipal Preferred, have, at the time of any such
declaration or purchase (and after giving effect thereto), an asset coverage (as
defined in and determined pursuant to the 1940 Act) of at least 200% (or such
other percentage as may in the future be required by law).

     In addition, for so long as any shares of Municipal Preferred are
outstanding, except as set forth in the following paragraph or otherwise
described herein, (A) the Trust may not declare, pay or set apart for payment
any dividend or other distribution (other than a dividend or distribution paid
in shares of, or in options, warrants or rights to subscribe for or purchase,
Common Shares or other shares, if any, ranking junior to the shares of Municipal
Preferred as to the payment of dividends and the distribution of assets upon
dissolution, liquidation or winding up of the affairs of the Trust) in respect
of Common Shares or any other shares of the Trust ranking junior to or on a
parity with the shares of Municipal Preferred as to the payment of dividends or
the distribution of assets upon dissolution, liquidation or winding up of the
affairs of the Trust, or call for redemption, redeem, purchase or otherwise
acquire for consideration any Common Shares or any other such junior shares
(except by conversion into or exchange for shares of the Trust ranking junior to
the shares of Municipal Preferred as to the payment of dividends and the
distribution of assets upon dissolution, liquidation or winding up of the
affairs of the Trust), or any such parity shares (except by conversion into or
exchange for shares of the Trust ranking junior to or on a parity with the
shares of Municipal Preferred as to payment of dividends and the distribution of
assets upon dissolution, liquidation or winding up of the affairs of the Trust),
unless (1) full cumulative dividends on shares of Municipal Preferred through
their most recently ended Dividend Period shall have been paid or shall have
been declared and sufficient funds for the payment thereof deposited with the
Auction Agent and (2) the Trust has redeemed the full number of shares of
Municipal Preferred required to be redeemed by any provision for mandatory
redemption pertaining thereto and (B) if either Moody's or Standard & Poor's is
rating the shares of Municipal Preferred, the Trust may not declare, pay or set
apart for payment any dividend or other distribution (other than a dividend or
distribution paid in shares of, or in options, warrants or rights to subscribe
for or purchase, Common Shares or other shares, if any, ranking junior to shares
of Municipal Preferred as to the payment of dividends and the distribution of
assets upon dissolution, liquidation or winding up of the affairs of the Trust)
in respect of Common Shares or any other shares of the Trust ranking junior to
shares of Municipal Preferred as to the payment of dividends or the distribution
of assets upon dissolution, liquidation or winding up of the affairs of the
Trust, or call for redemption, redeem, purchase or otherwise acquire for
consideration any Common Shares or any other such junior shares (except by
conversion into or exchange for shares of the Trust ranking junior
                                      B-29
<PAGE>   77

to the shares of Municipal Preferred as to the payment of dividends or the
distribution of assets upon dissolution, liquidation or winding up of the
affairs of the Trust), unless immediately after such transaction the Discounted
Value of Moody's Eligible Assets or Standard & Poor's Eligible Assets, or both,
as the case may be, would at least equal the Municipal Preferred Basic
Maintenance Amount (see "Description of Municipal Preferred -- Rating Agency
Guidelines" and "-- Redemption").

     Except as set forth in the next sentence, no dividends shall be declared or
paid or set apart for payment on any class or series of shares of beneficial
interest of the Trust ranking, as to the payment of dividends, on a parity with
shares of Municipal Preferred for any period unless full cumulative dividends
have been or contemporaneously are declared and paid on the shares of Municipal
Preferred through their most recent Dividend Payment Date. When dividends are
not paid in full upon the shares of Municipal Preferred through their most
recent Dividend Payment Date or upon any other class or series of shares ranking
on a parity as to the payment of dividends with shares of Municipal Preferred
through their most recent respective dividend payment dates, all dividends
declared upon shares of Municipal Preferred and any other such class or series
of shares ranking on a parity as to the payment of dividends with shares of
Municipal Preferred shall be declared pro rata so that the amount of dividends
declared per share on shares of Municipal Preferred and such other class or
series of shares shall in all cases bear to each other the same ratio that
accumulated dividends per share on the shares of Municipal Preferred and such
other class or series of shares bear to each other (for purposes of this
sentence, the amount of dividends declared per share of Municipal Preferred
shall be based on the Applicable Rate for such share for the Dividend Periods
during which dividends were not paid in full).

     Under the Code, the Trust must, among other things, distribute at least 90%
of the sum of its net investment income (including the excess, if any, of net
short-term capital gain over net long-term capital loss) and its net tax-exempt
income each year in order to maintain its qualification for tax treatment as a
regulated investment company. The foregoing limitations on dividends,
distributions and purchases may under certain circumstances impair the Trust's
ability to maintain such qualification. See "Tax Matters -- Federal Income Tax
Matters."

     DESIGNATION OF SPECIAL RATE PERIODS.  The Trust, at its option, may
designate any succeeding Subsequent Rate Period of shares of Municipal Preferred
as a Special Rate Period consisting of a specified number of Rate Period Days
evenly divisible by seven and not more than 1,820 (approximately 5 years),
subject to adjustment as described below. A designation of a Special Rate Period
shall be effective only if (i) notice thereof shall have been given as provided
herein, (ii) an Auction for such shares shall have been held on the Auction Date
immediately preceding the first day of such proposed Special Rate Period and
Sufficient Clearing Bids for such shares shall have existed in such Auction and
(iii) if the Trust shall have mailed a Notice of Redemption with respect to any
shares of Municipal Preferred, as described under "Redemption -- Notice of
Redemption" below, the Redemption Price with respect to such shares shall have
been deposited with the Auction Agent. In the event the Trust wishes to
designate any succeeding Subsequent Rate Period for shares of Municipal
Preferred as a Special Rate Period consisting of more than 28 Rate Period Days,
the Trust shall notify Standard & Poor's (if Standard & Poor's is then rating
such shares) and Moody's (if Moody's is then rating such shares) in advance of
the commencement of such Subsequent Rate Period that the Trust wishes to
designate such Subsequent Rate Period as a Special Rate Period and shall provide
Standard & Poor's (if Standard & Poor's is then rating such shares) and Moody's
(if Moody's is then rating such shares) with such documents as either may
request.

     In the event the Trust wishes to designate a Subsequent Rate Period of
shares of Municipal Preferred as a Special Rate Period, but the day following
what would otherwise be the last day of such Special Rate Period is not a
Tuesday that is a Business Day, then the Trust shall designate such Subsequent
Rate Period as a Special Rate Period consisting of the period commencing on the
first day following the end of the immediately preceding Rate Period and ending
on the first Monday that is followed by a Tuesday that is a Business Day
preceding what would otherwise be such last day.

     If the Trust proposes to designate any succeeding Subsequent Rate Period of
shares of Municipal Preferred as a Special Rate Period, not less than 20 (or
such lesser number of days as may be agreed to

                                      B-30
<PAGE>   78

from time to time by the Auction Agent) nor more than 30 days prior to the date
the Trust proposes to designate as the first day of such Special Rate Period
(which shall be such day that would otherwise be the first day of a Minimum Rate
Period), notice shall be (i) published or caused to be published by the Trust in
a newspaper of general circulation to the financial community in The City of New
York, New York, which carries financial news, and (ii) mailed by the Trust by
first-class mail, postage prepaid, to the holders of shares of Municipal
Preferred. Each such notice shall state (A) that the Trust may exercise its
option to designate a succeeding Subsequent Rate Period of shares of Municipal
Preferred as a Special Rate Period, specifying the first day thereof and (B)
that the Trust will, by 11:00 A.M., Eastern time, on the second Business Day
next preceding such date (or by such later time or date, or both, as may be
agreed to by the Auction Agent), notify the Auction Agent of either (x) its
determination, subject to certain conditions, to exercise such option, in which
case the Trust shall specify the Special Rate Period designated, or (y) its
determination not to exercise such option.

     No later than 11:00 A.M., Eastern time, on the second Business Day next
preceding the first day of any proposed Special Rate Period as to which notice
has been given as set forth in the preceding paragraph (or such later time or
date, or both, as may be agreed to by the Auction Agent), the Trust shall
deliver to the Auction Agent either:

          (i) a notice ("Notice of Special Rate Period") stating (A) that the
     Trust has determined to designate the next succeeding Rate Period of shares
     of Municipal Preferred as a Special Rate Period, specifying the same and
     the first day thereof, (B) the Auction Date immediately prior to the first
     day of such Special Rate Period, (C) that such Special Rate Period shall
     not commence if (1) an Auction for such shares shall not be held on such
     Auction Date for any reason or (2) an Auction for such shares shall be held
     on such Auction Date but Sufficient Clearing Bids for such shares shall not
     exist in such Auction, (D) the scheduled Dividend Payment Dates for such
     shares during such Special Rate Period and (E) the Special Redemption
     Provisions, if any, applicable to such shares in respect of such Special
     Rate Period; such notice to be accompanied by a Municipal Preferred Basic
     Maintenance Report showing that, as of the third Business Day next
     preceding such proposed Special Rate Period, Moody's Eligible Assets (if
     Moody's is then rating such shares) and Standard & Poor's Eligible Assets
     (if Standard & Poor's is then rating such shares) each have an aggregate
     Discounted Value at least equal to the Municipal Preferred Basic
     Maintenance Amount as of such Business Day (assuming for purposes of the
     foregoing calculation that (a) the Maximum Rate is the Maximum Rate on such
     Business Day as if such Business Day were the Auction Date for the proposed
     Special Rate Period, and (b) the Moody's Discount Factors applicable to
     Moody's Eligible Assets will be determined by reference to the first
     Moody's Exposure Period longer than the Moody's Exposure Period then
     applicable to the Trust); or

          (ii) a notice stating that the Trust has determined not to exercise
     its option to designate a Special Rate Period of shares of Municipal
     Preferred and that the next succeeding Rate Period shall be a Minimum Rate
     Period.

     If the Trust fails to deliver either such notice (and, in the case of the
notice described in clause (i) above, a Municipal Preferred Basic Maintenance
Report to the effect set forth in clause (i) (if either Moody's or Standard &
Poor's is then rating the shares of Municipal Preferred)) with respect to any
designation of any proposed Special Rate Period to the Auction Agent by 11:00
A.M., Eastern time, on the second Business Day next preceding the first day of
such proposed Special Rate Period (or by such later time or date, or both, as
may be agreed to by the Auction Agent), the Trust shall be deemed to have
delivered a notice to the Auction Agent with respect to such Special Rate Period
to the effect set forth in clause (ii) above. In the event the Trust delivers to
the Auction Agent a notice described in clause (i) above, it shall file a copy
of such notice with the Secretary of the Trust, and the contents of such notice
shall be binding on the Trust. In the event the Trust delivers to the Auction
Agent a notice described in clause (ii) above, the Trust will provide Moody's
(if Moody's is then rating the shares of Municipal Preferred) and Standard &
Poor's (if Standard & Poor's is then rating the shares of Municipal Preferred) a
copy of such notice.

                                      B-31
<PAGE>   79

VOTING RIGHTS

     Holders of shares of Municipal Preferred are entitled to vote on certain
matters as described herein under "Investment Objectives and
Policies -- Fundamental Investment Policies" and in the Prospectus under
"Description of Municipal Preferred -- Voting Rights" and "Certain Provisions in
the Agreement and Declaration of Trust."

     In connection with the election of the Trust's trustees, holders of
outstanding Preferred Shares, including shares of Municipal Preferred, voting
together as one separate class, shall be entitled to elect two of the Trust's
trustees, and the remaining trustees will be elected by holders of Common Shares
and Preferred Shares, including shares of Municipal Preferred, voting together
as a single class. In addition, if at any time dividends (whether or not earned
or declared) on outstanding Preferred Shares, including shares of Municipal
Preferred, shall be due and unpaid in an amount equal to two full years'
dividends thereon, and sufficient cash or specified securities shall not have
been deposited with the Auction Agent for the payment of such dividends, then,
as the sole remedy of holders of outstanding Preferred Shares, including shares
of Municipal Preferred, the number of trustees constituting the Board of
Trustees shall be automatically increased by the smallest number that, when
added to the two trustees elected exclusively by the holders of Preferred
Shares, including shares of Municipal Preferred, as described above, would
constitute a majority of the Board of Trustees as so increased by such smallest
number; and at a special meeting of shareholders which will be called and held
as soon as practicable, and at all subsequent meetings at which trustees are to
be elected, the holders of Preferred Shares, including shares of Municipal
Preferred, voting as a separate class, will be entitled to elect the smallest
number of additional trustees that, together with the two trustees which such
holders will be in any event entitled to elect, constitutes a majority of the
total number of trustees of the Trust as so increased. The terms of office of
the persons who are trustees at the time of that election will continue. If the
Trust thereafter shall pay, or declare and set apart for payment, in full all
dividends payable on all outstanding Preferred Shares, including shares of
Municipal Preferred, the voting rights stated in the preceding sentence shall
cease, and the terms of office of all of the additional trustees elected by the
holders of Preferred Shares, including shares of Municipal Preferred (but not of
the trustees with respect to whose election the holders of Common Shares were
entitled to vote or the two trustees the holders of Preferred Shares have the
right to elect in any event), will terminate automatically.

     So long as any shares of Municipal Preferred are outstanding, the Trust may
not, without the affirmative vote of the holders of at least a majority of the
shares of Municipal Preferred outstanding at the time, voting together as one
separate class:

          (a) authorize, create or issue additional shares of Municipal
     Preferred or classes or series of Preferred Shares ranking prior to or on a
     parity with shares of Municipal Preferred with respect to the payment of
     dividends or the distribution of assets upon dissolution, liquidation or
     winding up of the affairs of the Trust (except that the Trust may, without
     the vote of the holders of shares of Municipal Preferred, authorize, create
     or issue additional shares of Municipal Preferred or classes or series of
     Preferred Shares ranking on a parity with shares of Municipal Preferred
     with respect to the payment of dividends and the distribution of assets
     upon dissolution, liquidation or winding up of the affairs of the Trust if
     the Trust obtains written confirmation from Moody's (if Moody's is then
     rating the shares of Municipal Preferred) and Standard & Poor's (if
     Standard & Poor's is then rating the shares of Municipal Preferred) that
     the issuance of any such additional shares or class or series of shares
     would not impair the rating then assigned by such rating agency to shares
     of Municipal Preferred; provided, however, that if Moody's or Standard &
     Poor's is not then rating the shares of Municipal Preferred the aggregate
     liquidation preference of all Preferred Shares of the Trust outstanding
     after any such issuance, exclusive of accumulated and unpaid dividends, may
     not exceed $60,000,000);

          (b) amend, alter or repeal the provisions of the Declaration or the
     By-Laws, whether by merger, consolidation or otherwise, so as to materially
     affect any preference, right or power of the shares of Municipal Preferred
     or the holders thereof (provided, however, that a division of a share of
     Municipal

                                      B-32
<PAGE>   80

     Preferred shall be deemed to affect any such preference, right or power
     only if the terms of such division adversely affect the holders of any
     shares of Municipal Preferred);

provided, however, that (i) none of the actions permitted by the exception to
(a) above will be deemed to affect such preferences, rights or powers and (ii)
the authorization, creation and issuance of classes or series of shares ranking
junior to the Municipal Preferred with respect to the payment of dividends and
the distribution of assets upon dissolution, liquidation or winding up of the
affairs of the Trust will be deemed to affect such preferences, rights or powers
only if at least one of Moody's or Standard & Poor's is then rating the shares
of Municipal Preferred and such issuance would, at the time thereof, cause the
Trust not to satisfy the 1940 Act Municipal Preferred Asset Coverage or the
Municipal Preferred Basic Maintenance Amount. So long as any shares of Municipal
Preferred are outstanding, the Trust may not, without the affirmative vote of
the holders of at least 66 2/3% of the shares of Municipal Preferred outstanding
at the time, voting as a separate class, file a voluntary application for relief
under Federal bankruptcy law or any similar application under state law for so
long as the Trust is solvent and does not foresee becoming insolvent. If any
action set forth in this paragraph would adversely affect the rights of one or
more series (the "Affected Series") of Municipal Preferred in a manner different
from any other series of Municipal Preferred, the Trust will not approve any
such action without the affirmative vote of the holders of at least a majority
of the shares of each such Affected Series outstanding at the time (each such
Affected Series voting as a separate class).

     Voting provisions will not apply with respect to shares of Municipal
Preferred if, at or prior to the time when a vote is required, such shares shall
have been (i) redeemed or (ii) called for redemption and sufficient funds shall
have been deposited in trust to effect such redemption.

     The Board of Trustees may, without shareholder approval, amend, alter or
repeal any or all of the definitions and related provisions required to be
contained in the By-Laws by the rating agencies in the event the Trust receives
written confirmation from Moody's or Standard & Poor's, or both, as appropriate,
that any such amendment, alteration or repeal would not impair the ratings then
assigned by Moody's and Standard & Poor's to shares of Municipal Preferred.

RATING AGENCY GUIDELINES

     The Trust intends that, so long as shares of Municipal Preferred are
outstanding, the composition of its portfolio will reflect guidelines
established by at least one of Moody's or Standard & Poor's in connection with
the Trust's receipt on the Date of Original Issue of the shares of Municipal
Preferred of ratings of "aaa" from Moody's or AAA from Standard & Poor's.
Moody's and Standard & Poor's, nationally recognized independent rating
agencies, issue ratings for various securities reflecting their perceived
creditworthiness of such securities. The guidelines described below have been
developed by Moody's and Standard & Poor's in connection with other issuances of
asset-backed and similar securities, including debt obligations and adjustable
rate preferred shares, generally on a case-by-case basis through discussions
with the issuers of those securities. The guidelines are designed to ensure that
assets underlying outstanding debt or preferred shares will be sufficiently
varied and will be of sufficient quality and amount to justify investment grade
ratings. The guidelines do not have the force of law, but have been adopted by
the Trust in order to satisfy current requirements necessary for Moody's or
Standard & Poor's, or both, to issue the above-described ratings for shares of
Municipal Preferred, which ratings are generally relied upon by investors in
purchasing such securities. In the context of a closed-end investment company
such as the Trust, therefore, the guidelines provide a set of tests for
portfolio composition and asset coverage that supplement (and in some cases are
more restrictive than) the applicable requirements under the 1940 Act. A rating
agency's guidelines will apply to shares of Municipal Preferred only so long as
such rating agency is rating such shares. The Board of Trustees may, without
shareholder approval, amend, alter or repeal any or all of the definitions and
related provisions which have been adopted by the Trust pursuant to the rating
agency guidelines in the event the Trust receives written confirmation from
Moody's or Standard & Poor's, or both, as appropriate, that any such change
would not impair the ratings then assigned by Moody's and Standard & Poor's to
shares of Municipal Preferred.

                                      B-33
<PAGE>   81

     So long as either Standard & Poor's or Moody's, or both, are rating the
shares of Municipal Preferred, the Trust may not, among other things, (1) buy or
sell futures or write put or call options and similar securities and buy or sell
Inverse Floaters, except to the extent set forth in the By-Laws, which include
the restrictions set forth as Appendix D to this Statement of Additional
Information, (2) borrow money, except that the Trust may, without obtaining the
written confirmation described below, borrow money for the purpose of clearing
securities transactions if (a) the Municipal Preferred Basic Maintenance Amount
would continue to be satisfied after giving effect to such borrowing (which
shall mean, for purposes of the calculation of the Municipal Preferred Basic
Maintenance Amount, adding the amount of the liability for such borrowing to the
calculation of the Municipal Preferred Basic Maintenance Amount) and (b) such
borrowing (i) is privately arranged with a bank or other person and is evidenced
by a promissory note or other evidence of indebtedness that is not intended to
be publicly distributed or (ii) is for "temporary purposes," is evidenced by a
promissory note or other evidence of indebtedness and is an amount not exceeding
5 per centum of the value of the total assets of the Trust at the time of the
borrowing (for purposes of the foregoing, "temporary purpose" means that the
borrowing is to be repaid within sixty days and is not to be extended or
renewed), (3) issue additional shares of Municipal Preferred or any class or
series of shares ranking prior to or on a parity with the shares of Municipal
Preferred with respect to the payment of dividends or the distribution of assets
upon dissolution, liquidation or winding up of the affairs of the Trust, or
reissue any shares of Municipal Preferred previously purchased or redeemed by
the Trust, (4) engage in any short sales of securities, (5) lend any securities,
(6) merge or consolidate into or with any corporation, (7) change the pricing
service (currently the Trust uses both Muller Data Corporation and Standard &
Poor's J.J. Kenny Evaluation Services) referred to in the definition of Market
Value to a pricing service other than Muller Data Corporation or Standard &
Poor's J.J. Kenny Evaluation Services, or (8) enter into reverse repurchase
agreements, unless in each case (except as described above) it has received
written confirmation from Standard & Poor's or Moody's, or both, as appropriate,
that any such action would not impair the rating then assigned by such rating
agency to shares of Municipal Preferred. While the Trust does not presently
intend to borrow, and while the Trust is restricted under the 1940 Act from
borrowing in excess of 33  1/3% of its total assets and is otherwise restricted
from borrowing pursuant to rating agency guidelines, under certain circumstances
and notwithstanding adverse interest rate or market conditions, the Trust is
permitted to borrow for temporary or emergency purposes (e.g., to make required
distributions or pay dividends) or to repurchase shares when such borrowing is
deemed to be in the best interest of the common shareholders. See "Repurchase of
Common Shares" herein and "Repurchase of Common Shares; Conversion to Open-End
Fund" in the Prospectus for the circumstances under which the Trust may purchase
Common Shares and incur indebtedness in connection therewith. Should the Trust
borrow, the Trust would be required to pay when due the interest obligation on
any debt incurred by the Trust before it would be able to pay dividends on
shares of Municipal Preferred, and it is likely that the Trust would be required
to pay the principal amount of any such debt prior to meeting the liquidation
preference of the shares of Municipal Preferred. Because the interest expense on
borrowings by the Trust will reduce the Trust's net investment earnings
available to pay dividends on shares of Municipal Preferred, borrowing may
impair the Trust's ability to pay such dividends on shares of Municipal
Preferred. This risk is heightened in the event the Trust incurs variable rate
debt, the interest rate on which may increase with increases in prevailing
market rates.

ASSET MAINTENANCE

     1940 ACT MUNICIPAL PREFERRED ASSET COVERAGE.  The Trust will be required
under rating agency guidelines to maintain, as of the last Business Day of each
month on which any shares of Municipal Preferred are outstanding, asset coverage
of at least 200% with respect to such shares (or such other asset coverage as
may in the future be specified in or under the 1940 Act as the minimum asset
coverage for senior securities which are shares of a closed-end investment
company as a condition of declaring dividends on its common shares). If the
Trust fails to maintain such asset coverage in accordance with the requirements
of the rating agency or agencies then rating the shares of Municipal Preferred
("1940 Act Municipal Preferred Asset Coverage") and such failure is not cured as
of the last Business Day of the

                                      B-34
<PAGE>   82

following month (the "1940 Act Cure Date"), the Trust will be required under
certain circumstances to redeem certain of the shares of Municipal Preferred.
See "Redemption" below.

     MUNICIPAL PREFERRED BASIC MAINTENANCE AMOUNT.  The Trust will be required
under rating agency guidelines to maintain, as of each Business Day (a
"Valuation Date") on which shares of Municipal Preferred are outstanding, assets
having in the aggregate a Discounted Value at least equal to the Municipal
Preferred Basic Maintenance Amount established by the rating agency or agencies
then rating the shares of Municipal Preferred. If the Trust fails to meet such
requirement on any Valuation Date and such failure is not cured on or before the
second Business Day after such Valuation Date (the "Municipal Preferred Basic
Maintenance Cure Date"), the Trust will be required under certain circumstances
to redeem certain of the shares of Municipal Preferred. See "Redemption" below.

     The "Municipal Preferred Basic Maintenance Amount" as of any Valuation Date
is defined as the dollar amount equal to the sum of:

          (A) (i) the product of the number of shares of Municipal Preferred
     outstanding on such date multiplied by $25,000 (plus the product of the
     number of shares of any other series of Preferred Shares outstanding on
     such date multiplied by the liquidation preference of such shares), plus
     any redemption premium applicable to shares of Municipal Preferred (or
     other Preferred Shares) then subject to redemption;

             (ii) the aggregate amount of dividends that will have accumulated
        at the Applicable Rate (whether or not earned or declared) to (but not
        including) the first Dividend Payment Date for each share of Municipal
        Preferred outstanding that follows such Valuation Date (plus the
        aggregate amount of dividends, whether or not earned or declared, that
        will have accumulated in respect of other outstanding Preferred Shares
        to, but not including, the first respective dividend payment dates for
        such other shares that follow such Valuation Date);

             (iii) subject to certain exceptions, the aggregate amount of
        dividends that would accumulate on shares of Municipal Preferred
        outstanding from such first Dividend Payment Date through the 49th day
        after such Valuation Date, at the Maximum Rate (calculated as if such
        Valuation Date were the Auction Date for the Rate Period commencing on
        such Dividend Payment Date) for a Minimum Rate Period thereof to
        commence on such Dividend Payment Date, assuming, solely for purposes of
        the foregoing, that if on such Valuation Date the Trust shall have
        delivered a Notice of Special Rate Period to the Auction Agent with
        respect to such shares, such Maximum Rate shall be the higher of (a) the
        Maximum Rate for the Special Rate Period of such shares to commence on
        such Dividend Payment Date and (b) the Maximum Rate for a Minimum Rate
        Period of such shares to commence on such Dividend Payment Date,
        multiplied by the Volatility Factor applicable to a Minimum Rate Period,
        or, in the event the Trust shall have delivered a Notice of Special Rate
        Period to the Auction Agent with respect to such shares designating a
        Special Rate Period consisting of 49 Rate Period Days or more, the
        Volatility Factor applicable to a Special Rate Period of that length;

             (iv) the amount of anticipated Trust expenses for the 90 days
        subsequent to such Valuation Date;

             (v) the amount of the Trust's Maximum Potential Gross-up Payment
        Liability as of such Valuation Date; and

             (vi) any current liabilities as of such Valuation Date to the
        extent not reflected in any of (A)(i) through (A)(v) (including, without
        limitation, any payables for Municipal Obligations purchased as of such
        Valuation Date and any liabilities incurred for the purpose of clearing
        securities transactions) less

          (B) the value of any Trust assets irrevocably deposited by the Trust
     for the payment of any of (A)(i) through (A)(vi), all as calculated in
     accordance with the requirements of the rating agency or agencies then
     rating the shares of Municipal Preferred.

                                      B-35
<PAGE>   83

For purposes of the foregoing, "Maximum Potential Gross-up Payment Liability,"
as of any Valuation Date, means the aggregate amount of Gross-up Payments that
would be due if the Trust were to make Taxable Allocations, with respect to any
taxable year, estimated based upon dividends paid and the amount of
undistributed realized net capital gain and other taxable income earned by the
Trust, as of the end of the calendar month immediately preceding such Valuation
Date, and assuming such Gross-up Payments are fully taxable.

     In managing the Trust's portfolio, the Advisor will not alter the
composition of the Trust's portfolio if, in the reasonable belief of the
Advisor, the effect of any such alteration would be to cause the Trust to have
Eligible Assets with an aggregate Discounted Value, as of the immediately
preceding Valuation Date, less than the Municipal Preferred Basic Maintenance
Amount as of such Valuation Date; provided, however, that in the event that, as
of the immediately preceding Valuation Date, the aggregate Discounted Value of
the Trust's Eligible Assets exceeded the Municipal Preferred Basic Maintenance
Amount by 5% or less, the Advisor will not alter the composition of the Trust's
portfolio in a manner reasonably expected to reduce the aggregate Discounted
Value of the Trust's Eligible Assets unless the Trust shall have confirmed that,
after giving effect to such alteration, the aggregate Discounted Value of the
Trust's Eligible Assets would exceed the Municipal Preferred Basic Maintenance
Amount.

     Upon any failure to maintain the required Discounted Value, the Trust will
seek to alter the composition of its portfolio to reattain the Municipal
Preferred Basic Maintenance Amount on or prior to the Municipal Preferred Basic
Maintenance Cure Date, thereby incurring additional transaction costs and
possible losses and/or gains on dispositions of portfolio securities.

     On or before the third Business Day after a Valuation Date on which the
Trust fails to meet the Municipal Preferred Basic Maintenance Amount, and on the
third Business Day after the Municipal Preferred Basic Maintenance Cure Date
with respect to such Valuation Date, the Trust is required to deliver to the
Auction Agent (so long as either Moody's or Standard & Poor's is rating the
shares of Municipal Preferred) a report with respect to the calculation of the
Municipal Preferred Basic Maintenance Amount and the value of its portfolio
holdings as of the date of such failure or such cure date, as the case may be (a
"Municipal Preferred Basic Maintenance Report"). The Trust will also deliver, as
required, a Municipal Preferred Basic Maintenance Report as of (i) the fifteenth
day of each month (or, if such day is not a Business Day, the next succeeding
Business Day) and (ii) the last Business Day of each month, in each case on or
before the third Business Day after such day. Within ten Business Days after
delivery of such report relating to the last Business Day of each of February,
May, August and November of each year, commencing                  , 1999, the
Trust will deliver a letter prepared by the Trust's independent accountants
regarding the accuracy of the calculations made by the Trust in its most recent
Municipal Preferred Basic Maintenance Report. If any such letter prepared by the
Trust's independent accountants shows that an error was made in the most recent
Municipal Preferred Basic Maintenance Report, the calculation or determination
made by the Trust's independent accountants will be conclusive and binding on
the Trust.

     The Discount Factors and guidelines for determining the market value of the
Trust's portfolio holdings, described below, have been based by the rating
agencies on criteria such as the sensitivity of the market value of the relevant
asset to changes in interest rates, the liquidity and depth of the market for
the relevant asset, the credit quality of the relevant asset (for example, the
lower the rating of a debt obligation, the higher the related discount factor)
and the frequency with which the relevant asset is marked to market. The ratings
may be changed, suspended or withdrawn as a result of changes in, or the
unavailability of, such information.

     STANDARD & POOR'S AAA RATING GUIDELINES.  For purposes of calculating the
Discounted Value of the Trust's portfolio under current Standard & Poor's
guidelines, the fair market value of Municipal Obligations eligible for
consideration under such guidelines ("Standard & Poor's Eligible Assets") must
be discounted by certain discount factors set forth in the table below
("Standard & Poor's Discount Factors"). The Discounted Value of a Municipal
Obligation under Standard & Poor's guidelines is the fair market value thereof
divided by the Standard & Poor's Discount Factor. The Standard & Poor's Discount

                                      B-36
<PAGE>   84

Factor used to discount a particular Municipal Obligation will be determined by
reference to the "Standard & Poor's Exposure Period" (currently, three Business
Days) and the Standard & Poor's rating on such Municipal Obligation. Standard &
Poor's Discount Factors for a range of exposure periods are set forth below:

<TABLE>
<CAPTION>
                                                 STANDARD & POOR'S DISCOUNT
                                                  FACTORS RATING CATEGORY
                                     --------------------------------------------------
          EXPOSURE PERIOD            AAA*    AA*    A*     BBB*    UNRATED*    ZEROS***
          ---------------            ----    ---    ---    ----    --------    --------
<S>                                  <C>     <C>    <C>    <C>     <C>         <C>
45 Business Days...................  190%    195%   210%   250%      220%        572%
25 Business Days...................  170     175    190    230       220         496
10 Business Days...................  155     160    175    215       220         426
7 Business Days....................  150     155    170    210       220         411
3 Business Days....................  130     135    150    190       220         388
</TABLE>

- ---------------
  * Standard & Poor's rating.

 ** Standard & Poor's eligible assets not rated or rated less than BBB by
    Standard & Poor's and not rated at least the equivalent of an "A" rating by
    another nationally recognized crediting rating agency.

*** Municipal obligations rated AAA by Standard & Poor's which are not interest
    bearing or do not pay interest at least semi-annually.

     Since the Standard & Poor's Exposure Period currently applicable to the
Trust is three Business Days, the Standard & Poor's Discount Factors currently
applicable to Standard & Poor's Eligible Assets will be determined by reference
to the factors set forth opposite the line entitled "3 Business Days."
Notwithstanding the foregoing, (i) the Standard & Poor's Discount Factor for
short-term Municipal Obligations will be 115%, so long as such Municipal
Obligations are rated A-1+ or SP-1+ by Standard & Poor's and mature or have a
demand feature exercisable within 30 days or less, 120% if such Municipal
Obligations are rated A-1 or SP-1- by Standard & Poor's and mature or have a
demand feature exercisable within 30 days or less, or 125% if such Municipal
Obligations are not rated by Standard & Poor's but are rated VMIG-1, P-1 or
MIG-1 by Moody's; provided, however, that any such Moody's-rated short-term
Municipal Obligations which have demand features exercisable within 30 days or
less must be backed by a letter of credit, liquidity facility or guarantee from
a bank or other financial institution with a short-term rating of at least A-1+
from Standard & Poor's; and further provided that such Moody's-rated short-term
Municipal Obligations may comprise no more than 50% of short-term Municipal
Obligations that qualify as Standard & Poor's Eligible Assets; (ii) no Standard
& Poor's Discount Factor will be applied to cash options and similar instruments
or to Receivables for Municipal Obligations Sold; and (iii) except as set forth
in clause (i) above, in the case of any Municipal Obligation that is not rated
by Standard & Poor's but qualifies as a Standard & Poor's Eligible Asset
pursuant to clause (1)(c) of the following paragraph, such Municipal Obligation
will be deemed to have a Standard & Poor's rating one full rating category lower
than the Standard & Poor's rating category that is the equivalent of the rating
category in which such Municipal Obligation is placed by another nationally
recognized credit rating agency. For purposes of the foregoing, Anticipation
Notes rated SP-1+ or, if not rated by Standard & Poor's, rated MIG-1 or VMIG-1
by Moody's, which do not mature or have a demand feature at par exercisable in
30 days and which do not have a long-term rating, will be considered to be
short-term Municipal Obligations. "Receivables for Municipal Obligations Sold,"
for purposes of calculating Standard & Poor's Eligible Assets as of any
Valuation Date, means the book value of receivables for Municipal Obligations
sold as of or prior to such Valuation Date if such receivables are due within
five business days of such Valuation Date.

     The Standard & Poor's guidelines impose certain minimum issue size, issuer,
geographical diversification and other requirements for purposes of determining
Standard & Poor's Eligible Assets. Solely for purposes of this definition, the
term "Municipal Obligation" means any obligation the interest on which is exempt
from regular Federal income taxation and which is issued by any of the fifty
United States, the District of Columbia or any of the territories of the United
States, their subdivisions, counties,

                                      B-37
<PAGE>   85

cities, towns, villages, school districts and agencies (including authorities
and special districts created by the states), and federally sponsored agencies
such as local housing authorities. Notwithstanding the foregoing limitations:

          (1) In order to be considered Standard & Poor's Eligible Assets,
     Municipal Obligations owned by the Trust must:

             (a) be interest bearing and pay interest at least semi-annually;

             (b) be payable in U.S. dollars;

             (c) be publicly rated BBB or higher by Standard & Poor's or, except
        in the case of Anticipation Notes that are Grant Anticipation Notes or
        Bond Anticipation Notes which must be rated by Standard & Poor's to be
        included in Standard & Poor's Eligible Assets, if not rated by Standard
        & Poor's but rated by another nationally recognized credit rating
        agency, be publicly rated A or higher by such agency;

             (d) not be private placements (except in the case of Inverse
        Floaters);

             (e) be part of an issue with an original issue size of at least $20
        million or, if of an issue with an original issue size below $20 million
        (but in no event lower than $10 million), be issued by an issuer with a
        total of at least $50 million of securities outstanding; and

             (f) not be subject to a covered call or covered put option written
        by the Trust.

          (2) Municipal Obligations (excluding Escrowed Bonds) of any one issuer
     or guarantor (excluding bond insurers) will be considered Standard & Poor's
     Eligible Assets only to the extent the Market Value of such Municipal
     Obligations does not exceed 10% of the aggregate Market Value of Standard &
     Poor's Eligible Assets, provided that 2% is added to the applicable
     Standard & Poor's Discount Factor for every 1% by which the Market Value of
     such Municipal Obligations exceeds 5% of the aggregate Market Value of
     Standard & Poor's Eligible Assets, and provided that Municipal Obligations
     (excluding Escrowed Bonds) not rated or rated less than BBB by Standard &
     Poor's and not rated at least A by another nationally recognized credit
     rating agency of any one issuer or guarantor (excluding bond insurers)
     shall constitute Standard & Poor's Eligible Assets only to the extent the
     Market Value of such Municipal Obligations does not exceed 5% of the
     aggregate Market Value of Standard & Poor's Eligible Assets.

          (3) Municipal Obligations not rated at least BBB or not rated by
     Standard & Poor's and not rated at least A by another nationally recognized
     credit rating agency will be considered Standard & Poor's Eligible Assets
     only to the extent the Market Value of such Municipal Obligations does not
     exceed 50% of the aggregate Market Value of Standard & Poor's Eligible
     Assets; provided, however, that if the Market Value of such Municipal
     Obligations exceeds 50% of the aggregate Market Value of Standard & Poor's
     Eligible Assets, a portion of such Municipal Obligations (selected by the
     Trust) shall not be considered Standard & Poor's Eligible Assets, so that
     the Market Value of such Municipal Obligations (excluding such portion)
     does not exceed 50% of the aggregate Market Value of Standard & Poor's
     Eligible Assets.

          (4) Long-term Municipal Obligations (excluding Escrowed Bonds) issued
     by issuers in any one state or territory will be considered Standard &
     Poor's Eligible Assets only to the extent the Market Value of such
     Municipal Obligations does not exceed 25% of the aggregate Market Value of
     Standard & Poor's Eligible Assets.

          (5) Municipal Obligations which are not interest bearing or do not pay
     interest at least semi-annually shall be considered Standard & Poor's
     Eligible Assets if rated AAA by Standard & Poor's.

     MOODY'S "aaa" RATING GUIDELINES.  For purposes of calculating the
Discounted Value of the Trust's portfolio under current Moody's guidelines,
Municipal Obligations eligible for consideration under such guidelines ("Moody's
Eligible Assets") must be discounted by certain discount factors set forth in
the table below ("Moody's Discount Factors"). The Discounted Value of a
Municipal Obligation under
                                      B-38
<PAGE>   86

Moody's guidelines is, as of any Valuation Date, (i) with respect to a Moody's
Eligible Asset that is not currently callable as of such Valuation Date at the
option of the issuer thereof, the quotient of the market value thereof divided
by the applicable Moody's Discount Factor, or (ii) with respect to a Moody's
Eligible Asset that is currently callable as of such Valuation Date at the
option of the issuer thereof, the quotient of (a) the lesser of the market value
or call price thereof, including any call premium, divided by (b) the applicable
Moody's Discount Factor. The Moody's Discount Factor used to discount a
particular Municipal Obligation will be determined by reference to the "Moody's
Exposure Period" (currently, the period commencing on a given Valuation Date and
ending 49 days thereafter) and the Moody's rating on such Municipal Obligation.
Moody's Discount Factors for a range of exposure periods are set forth below:

<TABLE>
<CAPTION>
                                                         MOODY'S DISCOUNT FACTORS
                                                             RATING CATEGORY
                                --------------------------------------------------------------------------
EXPOSURE PERIOD                 Aaa*   Aa*   A*    Baa*   OTHER**   (V)MIG-1***   SP-1+****   UNRATED*****
- ---------------                 ----   ---   ---   ----   -------   -----------   ---------   ------------
<S>                             <C>    <C>   <C>   <C>    <C>       <C>           <C>         <C>
7 weeks.......................  151%   159%  166%  173%     187%        136%         148%         225%
8 weeks or less but greater
  than 7 weeks................  154    161   168   176      190         137          149          231
9 weeks or less but greater
  than 8 weeks................  156    163   170   177      192         138          150          240
</TABLE>

- ---------------
    *  Moody's rating.

   **  Municipal Obligations not rated by Moody's but rated BBB by Standard &
       Poor's.

  ***  Municipal Obligations rated MIG-1 or VMIG-1, which do not mature or have
       a demand feature at par exercisable in 30 days and which do not have a
       long-term rating.

 ****  Municipal Obligations not rated by Moody's but rated SP-1+ by Standard &
       Poor's, which do not mature or have a demand feature at par exercisable
       in 30 days and which do not have a long-term rating.

*****  Municipal Obligations not rated or rated lower than Baa3 by Moody's and
       not rated or rated lower than BBB by Standard & Poor's.

     Since the Moody's Exposure Period currently applicable to the Trust is 49
days, the Moody's Discount Factors currently applicable to Moody's Eligible
Assets will be determined by reference to the factors set forth opposite the
line entitled "7 weeks." Notwithstanding the foregoing, (i) the Moody's Discount
Factor for short-term Municipal Obligations will be 115%, so long as such
Municipal Obligations are rated at least MIG-1, VMIG-1 or P-1 by Moody's and
mature or have a demand feature at par exercisable in 30 days or less or 125% so
long as such Municipal Obligations are rated at least A-1+/AA or SP-1+/AA by
Standard & Poor's and mature or have a demand feature at par exercisable in 30
days or less and (ii) no Moody's Discount Factor will be applied to cash or to
Receivables for Municipal Obligations Sold. "Receivables for Municipal
Obligations Sold," for purposes of calculating Moody's Eligible Assets as of any
Valuation Date, means no more than the aggregate of the following: (i) the book
value of receivables for Municipal Obligations sold as of or prior to such
Valuation Date if such receivables are due within five business days of such
Valuation Date, and if the trades which generated such receivables are (x)
settled through clearing house firms with respect to which the Trust has
received prior written authorization from Moody's or (y) with counterparties
having a Moody's long-term debt rating of at least Baa3; and (ii) the Moody's
Discounted Value of Municipal Obligations sold as of or prior to such Valuation
Date which generated receivables, if such receivables are due within five
business days of such Valuation Date but do not comply with either of conditions
(x) or (y).

                                      B-39
<PAGE>   87

     The Moody's guidelines impose certain minimum issue size, issuer,
geographical diversification and other requirements for purposes of determining
Moody's Eligible Assets, as set forth in the table below:

<TABLE>
<CAPTION>
                                                MINIMUM        MAXIMUM           MAXIMUM
                                               ISSUE SIZE     UNDERLYING    STATE OR TERRITORY
RATING                                        ($ MILLIONS)    OBLIGOR(%)    CONCENTRATION (%)
- ------                                        ------------    ----------    ------------------
<S>                                           <C>             <C>           <C>
Aaa.........................................       10            100               100
Aa..........................................       10             20               60
A...........................................       10             10               40
Baa.........................................       10             6                20
Other*......................................       10             4                12
Unrated**...................................       10             4                12
</TABLE>

- ---------------
*  Municipal Obligations not rated by Moody's but rated BBB by Standard &
   Poor's.

** Municipal Obligations not rated or rated lower than Baa3 by Moody's and not
   rated or rated lower than BBB by Standard & Poor's.

     For purposes of the foregoing table, the percentages provided, for a given
rating, in the columns entitled "Maximum Underlying Obligor" and "Maximum State
or Territory Concentration" shall apply to the aggregate total of the Municipal
Obligations in the rating category indicated and all rated Municipal Obligations
in lower rating categories, as well as unrated Municipal Obligations that are
Moody's Eligible Assets.

     The percentages set forth in the preceding table are based upon Moody's
Eligible Assets calculated excluding cash. Current Moody's guidelines also
require that Municipal Obligations constituting Moody's Eligible Assets (i) pay
interest in cash, (ii) not have suspended ratings, and (iii) not be subject to a
covered call or a covered put option written by the Trust. For purposes of
determining the Moody's Discount Factors applicable to such Standard &
Poor's-rated Municipal Obligations, any such Municipal Obligation (excluding
short-term Municipal Obligations) will be deemed to have a Moody's rating which
is one full rating category lower than its Standard & Poor's rating. For
purposes of applying the foregoing requirements, Municipal Obligations rated
MIG-1, VMIG-1, or P-1, or, if not rated by Moody's, rated A-1+/AA or SP-1+/AA by
Standard & Poor's, will be considered to have a long-term rating of A. In
general, Municipal Obligations which are rated less than Baa3 by Moody's or less
than BBB by Standard & Poor's or not rated by Moody's or Standard & Poor's may
comprise no more than 40% of the aggregate Market Value of Moody's Eligible
Assets.

     The Trust will enter into futures and options transactions only for bona
fide hedging purposes and not for leveraging or speculative purposes. So long as
either Standard & Poor's or Moody's is rating the Municipal Preferred, the Trust
will only engage in futures or options transactions in accordance with
guidelines of such ratings agencies and, to the extent transactions would not be
permitted by such guidelines, only after it has received written confirmation
from Standard & Poor's or Moody's, as appropriate, that such transactions would
not impair the ratings then assigned by such rating agency to shares of
Municipal Preferred. The guidelines in effect with respect to futures and
options transactions in which the Trust may engage are set forth in the By-Laws
and are included as Appendix D to this Statement of Additional Information.

REDEMPTION

     OPTIONAL REDEMPTION.  Except as described below,

          (i) shares of Municipal Preferred are redeemable, at the option of the
     Trust, as a whole or from time to time in part, on the second Business Day
     preceding any Dividend Payment Date therefor, out of funds legally
     available therefor in accordance with the Declaration, the By-Laws and
     applicable law, at a redemption price per share equal to the sum of $25,000
     plus an amount equal to accumulated but unpaid dividends thereon (whether
     or not earned or declared) to (but not including)

                                      B-40
<PAGE>   88

     the date fixed for redemption; provided, however, that (1) shares of
     Municipal Preferred may not be redeemed in part if after such partial
     redemption fewer than 500 shares remain outstanding; (2) unless otherwise
     provided in the By-laws, shares of Municipal Preferred are redeemable by
     the Trust during the Initial Rate Period thereof only on the second
     Business Day next preceding the last Dividend Payment Date for such Initial
     Rate Period; and (3) subject to the next succeeding sentence, the Notice of
     Special Rate Period relating to a Special Rate Period of shares of
     Municipal Preferred, as delivered to the Auction Agent and filed with the
     Secretary of the Trust, may provide that such shares shall not be
     redeemable during the whole or any part of such Special Rate Period (except
     as provided in (ii) below) or shall be redeemable during the whole or any
     part of such Special Rate Period only upon payment of such redemption
     premium or premiums as shall be specified therein ("Special Redemption
     Provisions"); and

          (ii) shares of Municipal Preferred are redeemable, at the option of
     the Trust, as a whole but not in part, out of funds legally available
     therefor in accordance with the Declaration, the By-Laws and applicable
     law, on the first day following any Dividend Period thereof included in a
     Rate Period of more than 364 Rate Period Days if, on the date of
     determination of the Applicable Rate for such shares for such Rate Period,
     such Applicable Rate equaled or exceeded on such date of determination the
     Treasury Note Rate for such Rate Period, at a redemption price of $25,000
     per share plus an amount equal to accumulated but unpaid dividends thereon
     (whether or not earned or declared) to (but not including) the date fixed
     for redemption.

A Notice of Special Rate Period relating to shares of Municipal Preferred for a
Special Rate Period may contain Special Redemption Provisions only if the Board
of Trustees, after consultation with the Broker-Dealer or Broker-Dealers for
such Special Rate Period of such shares, determines that such Special Redemption
Provisions are in the best interest of the Trust.

     If fewer than all of the outstanding shares of Municipal Preferred are to
be redeemed as set forth above, the number of shares to be redeemed shall be
determined by the Board of Trustees, and such shares shall be redeemed pro rata
from the holders of record of shares of such series (initially Cede & Co. as
nominee of the Securities Depository) in proportion to the number of such shares
held by such holders. Since the nominee of the Securities Depository is the only
record holder of shares of Municipal Preferred, the Securities Depository will
determine the number of shares to be redeemed from the accounts of the Agent
Members. The Agent Members, in turn, may determine to redeem shares from some
persons listed on their records as beneficial owners (which may include an Agent
Member holding shares for its own account) without redeeming shares from the
accounts of other persons listed on their records as beneficial owners.

     The Trust may not mail a Notice of Redemption relating to an optional
redemption as described above on any date unless on such date (a) the Trust has
available certain Deposit Securities with maturity or tender dates not later
than the day preceding the applicable redemption date and having a value not
less than the amount (including any applicable premium) due to holders of shares
of Municipal Preferred by reason of the redemption of such shares on such
redemption date and (b) the Discounted Value of Moody's Eligible Assets (if
Moody's is then rating the shares of Municipal Preferred) and the Discounted
Value of Standard & Poor's Eligible Assets (if Standard & Poor's is then rating
the shares of Municipal Preferred) each at least equal the Municipal Preferred
Basic Maintenance Amount and would at least equal the Municipal Preferred Basic
Maintenance Amount immediately subsequent to such redemption if such redemption
were to occur on such date. For purposes of determining in clause (b) of the
preceding sentence whether the Discounted Value of Moody's Eligible Assets at
least equals the Municipal Preferred Basic Maintenance Amount, the Moody's
Discount Factors applicable to Moody's Eligible Assets will be determined by
reference to the first Moody's Exposure Period longer than the Moody's Exposure
Period then applicable to the Trust.

     MANDATORY REDEMPTION.  The Trust will be required to redeem, at a
redemption price equal to $25,000 per share plus accumulated but unpaid
dividends thereon (whether or not earned or declared) to (but not including) the
date fixed by the Board of Trustees for redemption (such amount, together with

                                      B-41
<PAGE>   89

the redemption prices described above under "Optional Redemption," being herein
referred to as the "Redemption Price"), certain of the shares of Municipal
Preferred to the extent permitted under the 1940 Act, the Declaration, the
By-Laws and any applicable law, if the Trust fails to maintain the Municipal
Preferred Basic Maintenance Amount or the 1940 Act Municipal Preferred Asset
Coverage in accordance with the requirements of the rating agency or rating
agencies then rating the shares of Municipal Preferred and such failure is not
cured on or before the Municipal Preferred Basic Maintenance Cure Date or the
1940 Act Cure Date (herein respectively referred to as a "Cure Date"), as the
case may be. The number of shares of Municipal Preferred to be redeemed will be
equal to the lesser of (a) the minimum number of shares of Municipal Preferred,
together with all other Preferred Shares subject to redemption or retirement,
the redemption of which, if deemed to have occurred immediately prior to the
opening of business on the Cure Date, would have resulted in the satisfaction of
the Municipal Preferred Basic Maintenance Amount or the 1940 Act Municipal
Preferred Asset Coverage, as the case may be, on such Cure Date (provided,
however, that, if there is no such minimum number of shares of Municipal
Preferred and other Preferred Shares the redemption or retirement of which would
have had such result, all shares of Municipal Preferred and Preferred Shares
then outstanding will be redeemed), and (b) the maximum number of shares of
Municipal Preferred, together with all other Preferred Shares subject to
redemption or retirement, that can be redeemed out of funds expected to be
legally available therefor. In determining the shares of Municipal Preferred
required to be redeemed in accordance with the foregoing, the Trust will
allocate the number of shares required to be redeemed to satisfy the Municipal
Preferred Basic Maintenance Amount or the 1940 Act Municipal Preferred Asset
Coverage, as the case may be, pro rata among shares of Municipal Preferred and
any other Preferred Shares subject to redemption or retirement.

     The Trust is required to effect such a mandatory redemption not earlier
than 20 days and not later than 40 days after such Cure Date, except that if the
Trust does not have funds legally available under the Declaration, the By-Laws
and applicable law for the redemption of all of the required number of shares of
Municipal Preferred and other Preferred Shares which are subject to mandatory
redemption or retirement or the Trust otherwise is unable to effect such
redemption on or prior to 40 days after such Cure Date, the Trust will redeem
those shares of Municipal Preferred and other Preferred Shares which it was
unable to redeem on the earliest practicable date on which it is able to effect
such redemption. If fewer than all of the outstanding shares of Municipal
Preferred are to be redeemed pursuant to a mandatory redemption, the number of
shares to be redeemed shall be redeemed pro rata from the holders of such shares
in proportion to the number of such shares held by such holders, in the same
manner as described above in respect of optional redemptions of fewer than all
outstanding shares of Municipal Preferred.

     NOTICE OF REDEMPTION.  Notice of redemption shall be given by mailing the
same to each holder of the shares to be redeemed (initially Cede & Co. as
nominee of the Securities Depository), not less than 20 nor more than 45 days
prior to the date fixed for redemption thereof, to the respective addresses of
such holders as the same shall appear on the record books of the Trust ("Notice
of Redemption"). Each such notice shall state (i) the redemption date; (ii) the
number of shares of Municipal Preferred to be redeemed; (iii) the CUSIP number
for such shares; (iv) the Redemption Price; (v) the place or places where
certificate(s) for such shares (properly endorsed or assigned for transfer, if
the Board of Trustees shall so require and the notice shall so state) are to be
surrendered for payment of the Redemption Price; (vi) that dividends on the
shares to be redeemed will cease to accumulate on such redemption date; and
(vii) the provisions of the By-Laws under which such redemption is made. If
fewer than all shares of Municipal Preferred held by any holder are to be
redeemed, the notice mailed to such holder shall also specify the number of
shares to be redeemed from such holder. The Trust may provide in any Notice of
Redemption relating to an optional redemption that such redemption is subject to
one or more conditions precedent and that the Trust shall not be required to
effect such redemption unless each such condition shall have been satisfied at
the time or times and in the manner specified in such Notice of Redemption.

     OTHER REDEMPTION PROCEDURES.  To the extent that any redemption for which a
Notice of Redemption has been mailed is not made by reason of the absence of
legally available funds therefor, such redemption will be made as soon as
practicable to the extent such funds become available. Failure to redeem shares
of Municipal Preferred will be deemed to exist at any time after the date
specified for redemption in a

                                      B-42
<PAGE>   90

Notice of Redemption when the Trust shall have failed, for any reason
whatsoever, to deposit with the Auction Agent the Redemption Price with respect
to any shares for which such Notice of Redemption has been mailed.
Notwithstanding the fact that the Trust may not have redeemed shares of
Municipal Preferred for which a Notice of Redemption has been mailed, dividends
may be declared and paid on shares of Municipal Preferred and will include those
shares of Municipal Preferred for which a Notice of Redemption has been mailed.
The first two sentences of this paragraph shall not apply in the event the Trust
provides in any Notice of Redemption relating to an optional redemption that
such redemption is subject to one or more conditions precedent and any such
condition precedent shall not have been satisfied at the time or times and in
the manner specified in such Notice of Redemption.

     Provided a Notice of Redemption has been mailed as described above, upon
the deposit with the Auction Agent (on the Business Day next preceding the date
fixed for redemption thereby, in funds available on the next Business Day in The
City of New York, New York) of funds sufficient to redeem the shares of
Municipal Preferred that are the subject of such notice, dividends on such
shares will cease to accumulate and such shares will no longer be deemed
outstanding for any purpose, and all rights of the holders of the shares so
called for redemption will cease and terminate, except the right of the holders
thereof to receive the Redemption Price, but without any interest or other
additional amount, except as otherwise provided above under
"Dividends -- Determination of Dividend Rate" and "-- Gross-up Payments." Upon
surrender in accordance with the Notice of Redemption of the certificates for
any shares so redeemed (properly endorsed or assigned for transfer, if the Board
of Trustees shall so require and the notice shall so state), the Redemption
Price shall be paid by the Auction Agent to the holders of shares of Municipal
Preferred subject to redemption. In the case that fewer than all of the shares
represented by any such certificate are redeemed, a new certificate shall be
issued, representing the unredeemed shares, without cost to the holder thereof.
The Trust will be entitled to receive from the Auction Agent, promptly after the
date fixed for redemption, any cash deposited with the Auction Agent in excess
of (i) the aggregate Redemption Price of the shares of Municipal Preferred
called for redemption on such date and (ii) all other amounts to which holders
of shares of Municipal Preferred called for redemption may be entitled. Any
funds so deposited that are unclaimed at the end of 90 days from such redemption
date will, to the extent permitted by law, be repaid to the Trust, after which
time the holders of shares of Municipal Preferred so called for redemption may
look only to the Trust for payment of the Redemption Price and all other amounts
to which they may be entitled. The Trust will be entitled to receive, from time
to time after the date fixed for redemption, any interest on the funds so
deposited.

     Notwithstanding the foregoing, if any dividends on shares of Municipal
Preferred (whether or not earned or declared) are in arrears, no shares of
Municipal Preferred shall be redeemed unless all outstanding shares of Municipal
Preferred are simultaneously redeemed, and the Trust shall not purchase or
otherwise acquire any shares of Municipal Preferred; provided, however, that the
foregoing shall not prevent the purchase or acquisition of all outstanding
shares of Municipal Preferred pursuant to the successful completion of an
otherwise lawful purchase or exchange offer made on the same terms to, and
accepted by, holders of all outstanding shares of Municipal Preferred.

     Except as described above with respect to redemptions and under "The
Auction -- Orders by Existing Holders and Potential Holders," the Declaration
and the By-Laws do not prohibit the Trust or any affiliate of the Trust from
purchasing or otherwise acquiring any shares of Municipal Preferred.

     The Trust has the right to arrange for third parties to purchase from the
holders thereof shares of Municipal Preferred which are to be redeemed as
described above.

LIQUIDATION

     Upon a dissolution, liquidation or winding up of the affairs of the Trust,
whether voluntary or involuntary, the holders of shares of Municipal Preferred
then outstanding will be entitled to receive and to be paid out of the assets of
the Trust available for distribution to its shareholders, before any payment or
distribution shall be made on the Common Shares or on any other class of shares
of the Trust ranking junior to the Municipal Preferred upon dissolution,
liquidation or winding up of the affairs of the Trust, an

                                      B-43
<PAGE>   91

amount equal to the liquidation preference with respect to such shares. The
liquidation preference for shares of Municipal Preferred shall be $25,000 per
share, plus an amount equal to all dividends thereon (whether or not earned or
declared) accumulated but unpaid to (but not including) the date of final
distribution in same-day funds, together with any applicable Gross-up Payments
in connection with the dissolution, liquidation or winding up of the affairs of
the Trust. After the payment to the holders of the shares of Municipal Preferred
of the full liquidation preference amounts provided for as described herein, the
holders of Municipal Preferred as such shall have no right or claim to any of
the remaining assets of the Trust. In the event the assets of the Trust
available for distribution to the holders of shares of Municipal Preferred, upon
any dissolution, liquidation or winding up of the affairs of the Trust, whether
voluntary or involuntary, shall be insufficient to pay in full all amounts to
which such holders are entitled, no such distribution shall be made on account
of any other class or series of Preferred Shares ranking on a parity with the
shares of Municipal Preferred upon such dissolution, liquidation or winding up
unless proportionate distributive amounts shall be paid on account of the shares
of Municipal Preferred, ratably, in proportion to the full distributable amounts
for which holders of all such parity shares are respectively entitled upon such
dissolution, liquidation or winding up. Subject to the rights of the holders of
any series or class or classes of shares ranking on a parity with the shares of
Municipal Preferred with respect to the distribution of assets upon dissolution,
liquidation or winding up of the affairs of the Trust, after payment shall have
been made in full to the holders of the shares of Municipal Preferred as
described herein, but not prior thereto, any other series or class or classes of
shares ranking junior to the shares of Municipal Preferred with respect to the
distribution of assets upon dissolution, liquidation or winding up shall,
subject to the respective terms and provisions (if any) applying thereto, be
entitled to receive any and all assets remaining to be paid or distributed, and
the holders of the shares of Municipal Preferred shall not be entitled to share
therein.

     Neither the sale of all or substantially all the property or business of
the Trust, nor the merger or consolidation of the Trust into or with any
Massachusetts business trust or corporation nor the merger or consolidation of
any Massachusetts business trust or corporation into or with the Trust shall be
a dissolution, liquidation or winding up of the affairs of the Trust, whether
voluntary or involuntary, for the purposes of the foregoing paragraph.

                          REPURCHASE OF COMMON SHARES

     The Trust is a closed-end investment company and as such its shareholders
will not have the right to cause the Trust to redeem their shares. Common Shares
trade in the open market at a price that is a function of several factors,
including net asset value and yield. Although the common shares of a closed-end
investment company such as the Trust that invests substantially all of its
assets in investment grade municipal obligations have generally traded at a
premium to net asset value, such shares have occasionally traded at a discount
to net asset value. The Board of Trustees has currently determined that, at
least annually, it will consider action that might be taken to reduce or
eliminate any material discount from net asset value in respect of Common
Shares, which may include the repurchase of such shares in the open market or in
private transactions, the making of a tender offer for such shares at net asset
value, or the conversion of the Trust to an open-end investment company. There
can be no assurance, however, that the Board of Trustees will decide to take any
of these actions, or that share repurchases or tender offers, if undertaken,
will reduce market discount. In addition, see "Description of Municipal
Preferred -- Dividends -- Restrictions on Dividends and Other Payments" for a
discussion of the limitations on the Trust's ability to engage in certain
transactions. The staff of the SEC currently requires that any tender offer made
by a closed-end investment company for its shares must be at a price equal to
the net asset value of such shares on the close of business on the last day of
the tender offer. Any service fees incurred in connection with any tender offer
made by the Trust will be borne by the Trust and will not reduce the stated
consideration to be paid to tendering shareholders.

     Subject to its investment limitations, the Trust may borrow to finance the
repurchase of shares or to make a tender offer. Interest on any borrowings to
finance share repurchase transactions or the accumulation of cash by the Trust
in anticipation of share repurchases or tenders will reduce the Trust's
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net income. Any share repurchase, tender offer or borrowing that might be
approved by the Board of Trustees would have to comply with the Securities
Exchange Act of 1934, as amended, and the 1940 Act and the rules and regulations
thereunder.

     Although the decision to take action in response to a discount from net
asset value will be made by the Board of Trustees at the time it considers such
issue, it is the Board's present policy, which may be changed by the Board, not
to authorize repurchases of the Trust's Common Shares or a tender offer for such
shares if (1) such transactions, if consummated, would (a) result in the
delisting of the Common Shares from the New York Stock Exchange (the
"Exchange"), or (b) impair the Trust's status as a regulated investment company
under the Code (which would make the Trust a taxable entity, causing the Trust's
income to be taxed at the corporate level in addition to the taxation of
shareholders who receive dividends from the Trust) or as a registered closed-end
investment company under the 1940 Act; (2) the Trust would not be able to
liquidate portfolio securities in an orderly manner and consistent with the
Trust's investment objectives and policies in order to repurchase shares; or (3)
there is, in the Board's judgment, any (a) material legal action or proceeding
instituted or threatened challenging such transactions or otherwise materially
adversely affecting the Trust, (b) general suspension of or limitation on prices
for trading securities on the Exchange, (c) declaration of a banking moratorium
by Federal or state authorities or any suspension of payment by United States or
New York State banks in which the Trust invests, (d) material limitation
affecting the Trust or the issuers of its portfolio securities by Federal or
state authorities on the extension of credit by lending institutions or on the
exchange of foreign currency, (e) commencement of war, armed hostilities or
other international or national calamity directly or indirectly involving the
United States, or (f) other event or condition which would have a material
adverse effect (including any adverse tax effect) on the Trust or its
shareholders if shares were repurchased. The Board of Trustees may in the future
modify these conditions in light of experience. Before deciding whether to take
any action in response to a discount from net asset value, the Board of Trustees
would consider all relevant factors, including the extent and duration of the
discount, the liquidity of the Trust's portfolio, the impact of any action that
might be taken on the Trust or its shareholders, and market considerations.
Based on these considerations, even if the Trust's Common Shares should trade at
a discount, the Board may determine that, in the interest of the Trust and its
shareholders, no action should be taken.

                                      B-45
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                       MISCELLANEOUS INVESTMENT PRACTICES

SHORT-TERM TRADING

     In seeking the Trust's objective, the Advisor will buy or sell portfolio
securities whenever the Advisor believes it appropriate to do so. In deciding
whether to sell a portfolio security, the Advisor does not consider how long the
Trust has owned the security. From time to time the Trust will buy securities
intending to seek short-term trading profits. A change in the securities held by
the Trust is known as "portfolio turnover" and generally involves some expense
to the Trust. This expense may include brokerage commissions or dealer markups
and other transaction costs on both the sale of securities and the reinvestment
of the proceeds in other securities. If sales of portfolio securities cause the
Trust to realize net short-term capital gain, such gain generally will be
taxable as ordinary income. As a result of the Trust's investment policies,
under certain market conditions the Trust's portfolio turnover rate may be
higher than that of other investment companies. Portfolio turnover rate for a
fiscal year is the ratio of the lesser of purchases or sales of portfolio
securities to the monthly average of the value of portfolio
securities -- excluding securities whose maturities at acquisition were one year
or less. The Trust's portfolio turnover rate is not a limiting factor when the
Advisor considers a change in the Trust's portfolio.

LOWER-RATED SECURITIES

     The Trust may invest in lower-rated securities (commonly known as "high
yield," high risk securities or "junk bonds"). The lower ratings of certain
securities held by the Trust reflect a greater possibility that adverse changes
in the financial condition of the issuer or in general economic conditions, or
both, or an unanticipated rise in interest rates, may impair the ability of the
issuer to make payments of interest and principal. The inability (or perceived
inability) of issuers to make timely payments of interest and principal would
likely make the values of securities held by the Trust more volatile and could
limit the Trust's ability to sell its securities at prices approximating the
values the Trust had placed on such securities. In the absence of a liquid
trading market for securities held by it, the Trust at times may be unable to
establish the fair value for such securities.

     Securities ratings are based largely on the issuer's historical financial
condition and the rating agencies' analysis at the time of rating. Consequently,
the rating assigned to any particular security is not necessarily a reflection
of the issuer's current financial condition, which may be better or worse than
the rating would indicate. In addition, the rating assigned to a security by
Moody's or Standard & Poor's (or by any other nationally recognized securities
rating organization) does not reflect an assessment of the volatility of the
security's market value or the liquidity of an investment in the security. See
Appendix A for a description of security ratings.

     Like those of other fixed-income securities, the values of lower-rated
securities fluctuate in response to changes in interest rates. A decrease in
interest rates will generally result in an increase in the value of the Trust's
assets. Conversely, during periods of rising interest rates, the value of the
Trust's assets will generally decline. The values of lower-rated securities may
often be affected to a greater extent by changes in general economic conditions
and business conditions affecting the issuers of such securities and their
industries. Negative publicity or investor perceptions may also adversely affect
the values of lower-rated securities. Changes by recognized rating services in
their ratings of any fixed-income security and changes in the ability of an
issuer to make payments of interest and principal may also affect the value of
these investments. Changes in the value of portfolio securities generally will
not affect income derived from these securities, but will affect the Trust's net
asset value. The Trust will not necessarily dispose of a security when its
rating is reduced below its rating at the time of purchase. However, the Advisor
will monitor the investment to determine whether its retention will assist in
meeting the Trust's investment objective.

     Issuers of lower-rated securities are often highly leveraged, so that their
ability to service their debt obligations during an economic downturn or during
sustained periods of rising interest rates may be impaired. Such issuers may not
have more traditional methods of financing available to them and may be

                                      B-46
<PAGE>   94

unable to repay outstanding obligations at maturity by refinancing. The risk of
loss due to default in payment of interest or repayment of principal by such
issuers is significantly greater because such securities frequently are
unsecured and subordinated to the prior payment of senior indebtedness.

     At times, a substantial portion of the Trust's assets may be invested in
securities as to which the Trust, by itself or together with other Trusts and
accounts managed by the Advisor and its affiliates, holds all or a major portion
of the securities outstanding. Although the Advisor generally considers such
securities to be liquid because of the availability of an institutional market
for such securities, it is possible that, under adverse market or economic
conditions or in the event of adverse changes in the financial condition of the
issuer, the Trust could find it more difficult to sell these securities when the
Advisor believes it advisable to do so or may be able to sell the securities
only at prices lower than if they were more widely held. Under these
circumstances, it may also be more difficult to determine the fair value of such
securities for purposes of computing the Trust's net asset value. In order to
enforce its rights in the event of a default under such securities, the Trust
may be required to participate in various legal proceedings or take possession
of and manage assets securing the issuer's obligations on such securities. This
could increase the Trust's operating expenses and adversely affect the Trust's
net asset value.

     Certain securities held by the Trust may permit the issuer at its option to
"call," or redeem, its securities. If an issuer were to redeem securities held
by the Trust during a time of declining interest rates, the Trust might not be
able to reinvest the proceeds in securities providing the same investment return
as the securities redeemed. The Trust may invest without limit in such bonds.

     To the extent the Trust invests in securities in the lower rating
categories, the achievement of the Trust's goals is more dependent on the
Advisor's investment analysis than would be the case if the Trust were investing
in securities in the higher rating categories.

PRIVATE PLACEMENTS

     The Trust may invest in securities that are purchased in private placements
and, accordingly, may be subject to restrictions on resale as a matter of
contract or under federal securities laws. Because there may be relatively few
potential purchasers for such investments, especially under adverse market or
economic conditions or in the event of adverse changes in the financial
condition of the issuer, the Trust could find it more difficult to sell such
securities when the Advisor believes it advisable to do so or may be able to
sell such securities only at prices lower than if such securities were more
widely held. At times, it may also be more difficult to determine the fair value
of such securities for purposes of computing the Trust's net asset value.

STEP COUPON BONDS (STEPS)

     The Trust may invest in debt securities which do not pay interest for a
stated period of time and then pay interest at a series of different rates for a
series of periods. In addition to the risks associated with the credit rating of
the issuers, these securities are subject to the volatility risk of zero coupon
bonds for the period when no interest is paid.

TENDER OPTION BONDS

     A tender option bond is a municipal security (generally held pursuant to a
custodial arrangement) having a relatively long maturity and bearing interest at
a fixed rate substantially higher than prevailing short-term tax-exempt rates
that has been coupled with the agreement of a third party, such as a bank,
broker-dealer or other financial institution, pursuant to which such institution
grants the security holders the option, at periodic intervals, to tender their
securities to the institution and receive the face value thereof. As
consideration for providing the option, the financial institution receives
periodic fees equal to the difference between the municipal security's fixed
coupon rate and the rate, as determined by a remarketing or similar agent at or
near the commencement of such period, that would cause the securities, coupled
with the tender option, to trade at par on the date of such determination. Thus,
after payment of this fee, the security holder effectively holds a demand
obligation that bears interest at the prevailing
                                      B-47
<PAGE>   95

short-term tax-exempt rate. The Advisor will consider on an ongoing basis the
creditworthiness of the issuer of the underlying municipal securities, of any
custodian, and of the third-party provider of the tender option. In certain
instances and for certain tender option bonds, the option may be terminable in
the event of a default in payment of principal or interest on the underlying
municipal securities and for other reasons.

PAY-IN-KIND (PIK) SECURITIES

     The Trust may invest in securities which pay interest either in cash or
additional securities at the issuer's option. These securities are generally
high yield securities and in addition to the other risks associated with
investing in high yield securities are subject to the risks that the interest
payments, which consist of additional securities, will also be subject to the
risks of high yield securities.

MONEY MARKET INSTRUMENTS

     The Trust may invest in short-term money market instruments as follows:
Government obligations are issued by the U.S. or foreign governments, their
subdivisions, agencies and instrumentalities. Supranational obligations are
issued by supranational entities and are generally designed to promote economic
improvements. Certificates of deposit are issued against deposits in a
commercial bank with a defined return and maturity. Banker's acceptances are
used to finance the import, export or storage of goods and are "accepted" when
guaranteed at maturity by a bank. Commercial paper is promissory notes issued by
businesses to finance short-term needs (including those with floating or
variable interest rates, or including a frequent interval put feature).
Short-term corporate obligations are bonds and notes (with one year or less to
maturity at the time of purchase) issued by businesses to finance long-term
needs.

FORWARD COMMITMENTS

     The Trust may enter into contracts to purchase securities for a fixed price
at a future date beyond customary settlement time ("forward commitments") if the
Trust sets aside, on the books and records of its custodian, liquid assets in an
amount sufficient to meet the purchase price, or if the Trust enters into
offsetting contracts for the forward sale of other securities it owns. In the
case of to-be-announced ("TBA") purchase commitments, the unit price and the
estimated principal amount are established when the Trust enters into a
contract, with the actual principal amount being within a specified range of the
estimate. Forward commitments may be considered securities in themselves, and
involve a risk of loss if the value of the security to be purchased declines
prior to the settlement date, which risk is in addition to the risk of decline
in the value of the Trust's other assets. Where such purchases are made through
dealers, the Trust relies on the dealer to consummate the sale. The dealer's
failure to do so may result in the loss to the Trust of an advantageous yield or
price. Although the Trust will generally enter into forward commitments with the
intention of acquiring securities for its portfolio or for delivery pursuant to
options contracts it has entered into, the Trust may dispose of a commitment
prior to settlement if the Advisor deems it appropriate to do so. The Trust may
realize short-term profits or losses on the sale of forward commitments.

     The Trust may enter into TBA sale commitments to hedge its portfolio
positions or to sell securities it owns under delayed delivery arrangements.
Proceeds of TBA sale commitments are not received until the contractual
settlement date. During the time a TBA sale commitment is outstanding,
equivalent deliverable securities, or an offsetting TBA purchase commitment
deliverable on or before the sale commitment date, are held as "cover" for the
transaction. Unsettled TBA sale commitments are valued at current market value
of the underlying securities. If the TBA sale commitment is closed through the
acquisition of an offsetting purchase commitment, the Trust realizes a gain or
loss on the commitment without regard to any unrealized gain or loss on the
underlying security. If the Trust delivers securities under the commitment, the
Trust realizes a gain or loss from the sale of the securities based upon the
unit price established at the date the commitment was entered into.

                                      B-48
<PAGE>   96

REPURCHASE AGREEMENTS

     The Trust may enter into repurchase agreements. A repurchase agreement is a
contract under which the Trust acquires a security for a relatively short period
(usually not more than one week), subject to the obligation of the seller to
repurchase and the Trust to resell such security at a fixed time and price
(representing the Trust's cost plus interest). It is the Trust's present
intention to enter into repurchase agreements only with commercial banks and
registered broker-dealers and only with respect to obligations of the U.S.
government or its agencies or instrumentalities. Repurchase agreements may also
be viewed as loans made by the Trust which are collateralized by the securities
subject to repurchase. The Advisor will monitor such transactions to ensure that
the value of the underlying securities will be at least equal at all times to
the total amount of the repurchase obligation, including the interest factor. If
the seller defaults, the Trust could realize a loss on the sale of the
underlying security to the extent that the proceeds of sale, including accrued
interest, are less than the resale price provided in the agreement, including
interest. In addition, if the seller should be involved in bankruptcy or
insolvency proceedings, the Trust may incur delay and costs in selling the
underlying security or may suffer a loss of principal and interest if the Trust
is treated as an unsecured creditor and required to return the underlying
collateral to the seller's estate.

     Pursuant to an exemptive order issued by the Securities and Exchange
Commission, the Trust may transfer uninvested cash balances into a joint
account, along with cash of other Liberty Funds and certain other accounts.
These balances may be invested in one or more repurchase agreements and/or
short-term money market instruments.

OPTIONS ON SECURITIES

     WRITING COVERED OPTIONS.  The Trust may write covered call options and
covered put options on optionable securities held in its portfolio, when in the
opinion of the Advisor such transactions are consistent with the Trust's
investment objective and policies. Call options written by the Trust give the
purchaser the right to buy the underlying securities from the Trust at a stated
exercise price; put options give the purchaser the right to sell the underlying
securities to the Trust at a stated price.

     The Trust may write only covered options, which means that, so long as the
Trust is obligated as the writer of a call option, it will own the underlying
securities subject to the option (or comparable securities satisfying the cover
requirements of securities exchanges). In the case of put options, the Trust
will hold cash and/or high-grade short-term debt obligations equal to the price
to be paid if the option is exercised. In addition, the Trust will be considered
to have covered a put or call option if and to the extent that it holds an
option that offsets some or all of the risk of the option it has written. The
Trust may write combinations of covered puts and calls on the same underlying
security.

     The Trust will receive a premium from writing a put or call option, which
increases the Trust's return on the underlying security in the event the option
expires unexercised or is closed out at a profit. The amount of the premium
reflects, among other things, the relationship between the exercise price and
the current market value of the underlying security, the volatility of the
underlying security, the amount of time remaining until expiration, current
interest rates and the effect of supply and demand in the options market and in
the market for the underlying security. By writing a call option, the Trust
limits its opportunity to profit from any increase in the market value of the
underlying security above the exercise price of the option but continues to bear
the risk of a decline in the value of the underlying security. By writing a put
option, the Trust assumes the risk that it may be required to purchase the
underlying security for an exercise price higher than its then-current market
value, resulting in a potential capital loss unless the security subsequently
appreciates in value.

     The Trust may terminate an option that it has written prior to its
expiration by entering into a closing purchase transaction in which it purchases
an offsetting option. The Trust realizes a profit or loss from a closing
transaction if the cost of the transaction (option premium plus transaction
costs) is less or more than the premium received from writing the option. If the
Trust writes a call option but does not own the underlying security, and when it
writes a put option, the Trust may be required to deposit cash or securities
with its broker as "margin," or collateral, for its obligation to buy or sell
the underlying security.

                                      B-49
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As the value of the underlying security varies, the Trust may have to deposit
additional margin with the broker. Margin requirements are complex and are fixed
by individual brokers, subject to minimum requirements currently imposed by the
Federal Reserve Board and by stock exchanges and other self-regulatory
organizations.

     PURCHASING PUT OPTIONS.  The Trust may purchase put options to protect its
portfolio holdings in an underlying security against a decline in market value.
Such protection is provided during the life of the put option since the Trust,
as holder of the option, is able to sell the underlying security at the put
exercise price regardless of any decline in the underlying security's market
price. In order for a put option to be profitable, the market price of the
underlying security must decline sufficiently below the exercise price to cover
the premium and transaction costs. By using put options in this manner, the
Trust will reduce any profit it might otherwise have realized from appreciation
of the underlying security by the premium paid for the put option and by
transaction costs.

     PURCHASING CALL OPTIONS.  The Trust may purchase call options to hedge
against an increase in the price of securities that the Trust wants ultimately
to buy. Such hedge protection is provided during the life of the call option
since the Trust, as holder of the call option, is able to buy the underlying
security at the exercise price regardless of any increase in the underlying
security's market price. In order for a call option to be profitable, the market
price of the underlying security must rise sufficiently above the exercise price
to cover the premium and transaction costs.

RISK FACTORS IN OPTIONS TRANSACTIONS

     The successful use of the Trust's options strategies depends on the ability
of the Advisor to forecast interest rate and market movements correctly. For
example, if the Trust were to write a call option based on the Advisor's
expectation that the price of the underlying security would fall, but the price
were to rise instead, the Trust could be required to sell the security upon
exercise at a price below the current market price. Similarly, if the Trust were
to write a put option based on the Advisor's expectation that the price of the
underlying security would rise, but the price were to fall instead, the Trust
could be required to purchase the security upon exercise at a price higher than
the current market price.

     When the Trust purchases an option, it runs the risk that it will lose its
entire investment in the option in a relatively short period of time, unless the
Trust exercises the option or enters into a closing sale transaction before the
option's expiration. If the price of the underlying security does not rise (in
the case of a call) or fall (in the case of a put) to an extent sufficient to
cover the option premium and transaction costs, the Trust will lose part or all
of its investment in the option. This contrasts with an investment by the Trust
in the underlying security, since the Trust will not realize a loss if the
security's price does not change.

     The effective use of options also depends on the Trust's ability to
terminate option positions at times when the Advisor deems it desirable to do
so. There is no assurance that the Trust will be able to effect closing
transactions at any particular time or at an acceptable price.

     If a secondary market in options were to become unavailable, the Trust
could no longer engage in closing transactions. Lack of investor interest might
adversely affect the liquidity of the market for particular options or series of
options. A market may discontinue trading of a particular option or options
generally. In addition, a market could become temporarily unavailable if unusual
events -- such as volume in excess of trading or clearing capability -- were to
interrupt its normal operations.

     A market may at times find it necessary to impose restrictions on
particular types of options transactions, such as opening transactions. For
example, if an underlying security ceases to meet qualifications imposed by the
market or the Options Clearing Corporation, new series of options on that
security will no longer be opened to replace expiring series, and opening
transactions in existing series may be prohibited. If an options market were to
become unavailable, the Trust as a holder of an option would be able to realize
profits or limit losses only by exercising the option, and the Trust, as option
writer, would remain obligated under the option until expiration or exercise.

                                      B-50
<PAGE>   98

     Disruptions in the markets for the securities underlying options purchased
or sold by the Trust could result in losses on the options. If trading is
interrupted in an underlying security, the trading of options on that security
is normally halted as well. As a result, the Trust as purchaser or writer of an
option will be unable to close out its positions until options trading resumes,
and it may be faced with considerable losses if trading in the security reopens
at a substantially different price. In addition, the Options Clearing
Corporation or other options markets may impose exercise restrictions. If a
prohibition on exercise is imposed at the time when trading in the option has
also been halted, the Trust as purchaser or writer of an option will be locked
into its position until one of the two restrictions has been lifted. If the
Options Clearing Corporation were to determine that the available supply of an
underlying security appears insufficient to permit delivery by the writers of
all outstanding calls in the event of exercise, it may prohibit indefinitely the
exercise of put options. The Trust, as holder of such a put option, could lose
its entire investment if the prohibition remained in effect until the put
option's expiration.

FUTURES CONTRACTS AND RELATED OPTIONS

     Subject to applicable law, the Trust may invest without limit in the types
of futures contracts and related options identified in the Prospectus for
hedging and non-hedging purposes, such as to manage the effective duration of
the Trust's portfolio or as a substitute for direct investment. A financial
futures contract sale creates an obligation by the seller to deliver the type of
financial instrument called for in the contract in a specified delivery month
for a stated price. A financial futures contract purchase creates an obligation
by the purchaser to take delivery of the type of financial instrument called for
in the contract in a specified delivery month at a stated price. The
determination is made in accordance with the rules of the exchange on which the
futures contract sale or purchase was made. Futures contracts are traded in the
United States only on commodity exchanges or boards of trade -- known as
"contract markets" -- approved for such trading by the Commodity Futures Trading
Commission (the "CFTC"), and must be executed through a futures commission
merchant or brokerage firm which is a member of the relevant contract market.

     Although futures contracts (other than index futures) by their terms call
for actual delivery or acceptance of commodities or securities, in most cases
the contracts are closed out before the settlement date without the making or
taking of delivery. Closing out a futures contract sale is effected by
purchasing a futures contract for the same aggregate amount of the specific type
of financial instrument or commodity with the same delivery date. If the price
of the initial sale of the futures contract exceeds the price of the offsetting
purchase, the seller is paid the difference and realizes a gain. Conversely, if
the price of the offsetting purchase exceeds the price of the initial sale, the
seller realizes a loss. If the Trust is unable to enter into a closing
transaction, the amount of the Trust's potential loss is unlimited. The closing
out of a futures contract purchase is effected by the purchaser's entering into
a futures contract sale. If the offsetting sale price exceeds the purchase
price, the purchaser realizes a gain, and if the purchase price exceeds the
offsetting sale price, the purchaser realizes a loss. In general, 40% of the
gain or loss arising from the closing out of a futures contract traded on an
exchange approved by the CFTC is treated as short-term gain or loss, and 60% is
treated as long-term gain or loss.

     Unlike when the Trust purchases or sells a security, no price is paid or
received by the Trust upon the purchase or sale of a futures contract. Upon
entering into a contract, the Trust is required to deposit with its custodian in
a segregated account in the name of the futures broker an amount of liquid
assets. This amount is known as "initial margin." The nature of initial margin
in futures transactions is different from that of margin in security
transactions in that futures contract margin does not involve the borrowing of
funds to finance the transactions. Rather, initial margin is similar to a
performance bond or good faith deposit which is returned to the Trust upon
termination of the futures contract, assuming all contractual obligations have
been satisfied. Futures contracts also involve brokerage costs.

     Subsequent payments, called "variation margin" or "maintenance margin," to
and from the broker (or the custodian) are made on a daily basis as the price of
the underlying security or commodity fluctuates, making the long and short
positions in the futures contract more or less valuable, a process known as
"marking to the market." For example, when the Trust has purchased a futures
contract on a security and

                                      B-51
<PAGE>   99

the price of the underlying security has risen, that position will have
increased in value and the Trust will receive from the broker a variation margin
payment based on that increase in value. Conversely, when the Trust has
purchased a security futures contract and the price of the underlying security
has declined, the position would be less valuable and the Trust would be
required to make a variation margin payment to the broker.

     The Trust may elect to close some or all of its futures positions at any
time prior to their expiration in order to reduce or eliminate a position then
currently held by the Trust. The Trust may close its positions by taking
opposite positions which will operate to terminate the Trust's position in the
futures contracts. Final determinations of variation margin are then made,
additional cash is required to be paid by or released to the Trust, and the
Trust realizes a loss or a gain. Such closing transactions involve additional
commission costs.

     The Trust does not intend to purchase or sell futures or related options
for other than hedging purposes if, as a result, the sum of the initial margin
deposits on the Trust's existing futures and related options positions and
premiums paid for outstanding options on futures contracts would exceed 5% of
the Trust's net assets.

     OPTIONS ON FUTURES CONTRACTS.  The Trust may purchase and write call and
put options on futures contracts and it may buy or sell and enter into closing
transactions with respect to such options to terminate existing positions.
Options on futures contracts give the purchaser the right, in return for the
premium paid, to assume a position in a futures contract at the specified option
exercise price at any time during the period of the option. The Trust may use
options on futures contracts in lieu of writing or buying options directly on
the underlying securities or purchasing and selling the underlying futures
contracts. For example, to hedge against a possible decrease in the value of its
portfolio securities, the Trust may purchase put options or write call options
on futures contracts rather than selling futures contracts. Similarly, the Trust
may purchase call options or write put options on futures contracts as a
substitute for the purchase of futures contracts to hedge against a possible
increase in the price of securities which the Trust expects to purchase. Such
options generally operate in the same manner as options purchased or written
directly on the underlying investments.

     As with options on securities, the holder or writer of an option may
terminate his position by selling or purchasing an offsetting option. There is
no guarantee that such closing transactions can be effected.

     The Trust will be required to deposit initial margin and maintenance margin
with respect to put and call options on futures contracts written by it pursuant
to brokers' requirements, similar to those described above in connection with
the discussion of futures contracts.

     RISKS OF TRANSACTIONS IN FUTURES CONTRACTS AND RELATED OPTIONS.  Successful
use of futures contracts by the Trust is subject to the Advisor's ability to
predict movements in various factors affecting securities markets, including
interest rates. Compared to the purchase or sale of futures contracts, the
purchase of call or put options on futures contracts involves less potential
risk to the Trust because the maximum amount at risk is the premium paid for the
options (plus transaction costs). However, there may be circumstances when the
purchase of a call or put option on a futures contract would result in a loss to
the Trust when the purchase or sale of a futures contract would not, such as
when there is no movement in the prices of the hedged investments. The writing
of an option on a futures contract involves risks similar to those risks
relating to the sale of futures contracts.

     The use of options and futures strategies also involves the risk of
imperfect correlation among movements in the prices of the securities underlying
the futures and options purchased and sold by the Trust, of the options and
futures contracts themselves, and, in the case of hedging transactions, of the
securities which are the subject of a hedge.

     There is no assurance that higher than normal trading activity or other
unforeseen events might not, at times, render certain market clearing facilities
inadequate, and thereby result in the institution by exchanges of special
procedures which may interfere with the timely execution of customer orders.

                                      B-52
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     To reduce or eliminate a position held by the Trust, the Trust may seek to
close out such position. The ability to establish and close out positions will
be subject to the development and maintenance of a liquid secondary market. It
is not certain that this market will develop or continue to exist for a
particular futures contract or option. Reasons for the absence of a liquid
secondary market on an exchange include the following: (i) there may be
insufficient trading interest in certain contracts or options, (ii) restrictions
may be imposed by an exchange on opening transactions or closing transactions or
both, (iii) trading halts, suspensions or other restrictions may be imposed with
respect to particular classes or series of contracts or options, or underlying
securities, (iv) unusual or unforeseen circumstances may interrupt normal
operations on an exchange, (v) the facilities of an exchange or a clearing
corporation may not at all times be adequate to handle current trading volume,
or (vi) one or more exchanges could, for economic or other reasons, decide or be
compelled at some future date to discontinue the trading of contracts or options
(or a particular class or series of contracts or options), in which event the
secondary market on that exchange for such contracts or options (or in the class
or series of contracts or options) would cease to exist, although outstanding
contracts or options on the exchange that had been issued by a clearing
corporation as a result of trades on that exchange would continue to be
exercisable in accordance with their terms.

     U.S. TREASURY SECURITY FUTURES CONTRACTS AND OPTIONS.  U.S. Treasury
security futures contracts require the seller to deliver, or the purchaser to
take delivery of, the type of U.S. Treasury security called for in the contract
at a specified date and price. Options on U.S. Treasury security futures
contracts give the purchaser the right, in return for the premium paid, to
assume a position in a U.S. Treasury security futures contract at the specified
option exercise price at any time during the period of the option.

     Successful use of U.S. Treasury security futures contracts by the Trust is
subject to the Advisor's ability to predict movements in the direction of
interest rates and other factors affecting markets for debt securities. For
example, if the Trust has sold U.S. Treasury security futures contracts in order
to hedge against the possibility of an increase in interest rates which would
adversely affect securities held in its portfolio, and the prices of the Trust's
securities increase instead as a result of a decline in interest rates, the
Trust would be likely to lose part or all of the benefit of the increased value
of its securities which it has hedged because it will have offsetting losses in
its futures positions. In addition, in such situations, if the Trust has
insufficient cash, it may have to sell securities to meet daily maintenance
margin requirements at a time when it may be disadvantageous to do so.

     There is also a risk that price movements in U.S. Treasury security futures
contracts and related options will not correlate closely with price movements in
markets for particular securities. For example, if the Trust has hedged against
a decline in the values of high yield corporate securities held by it by selling
Treasury security futures and the values of Treasury securities subsequently
increase while the values of its high yield corporate securities decrease, the
Trust would incur losses on both the Treasury security futures contracts written
by it and the high yield corporate securities held in its portfolio.

     INDEX FUTURES CONTRACTS.  An index futures contract is a contract to buy or
sell units of an index at a specified future date at a price agreed upon when
the contract is made. Entering into a contract to buy units of an index is
commonly referred to as buying or purchasing a contract or holding a long
position in the index. Entering into a contract to sell units of an index is
commonly referred to as selling a contract or holding a short position. A unit
is the current value of the index. The Trust may enter into stock index futures
contracts, debt index futures contracts, or other index futures contracts
appropriate to its objective. The Trust may also purchase and sell options on
index futures contracts.

     There are several risks in connection with the use by the Trust of index
futures. One risk arises because of the imperfect correlation between movements
in the prices of the index futures and movements in the prices of securities
which are the subject of the hedge. The Advisor will, however, attempt to reduce
this risk by buying or selling, to the extent possible, futures on indices the
movements of which will, in its judgment, have a significant correlation with
movements in the prices of the securities sought to be hedged.

     Successful use of index futures by the Trust is also subject to the
Advisor's ability to predict movements in the direction of the market. For
example, it is possible that, where the Trust has sold

                                      B-53
<PAGE>   101

futures to hedge its portfolio against a decline in the market, the index on
which the futures are written may advance and the value of securities held in
the Trust's portfolio may decline. If this occurred, the Trust would lose money
on the futures and also experience a decline in value in its portfolio
securities. It is also possible that, if the Trust has hedged against the
possibility of a decline in the market adversely affecting securities held in
its portfolio and securities prices increase instead, the Trust will lose part
or all of the benefit of the increased value of those securities it has hedged
because it will have offsetting losses in its futures positions. In addition, in
such situations, if the Trust has insufficient cash, it may have to sell
securities to meet daily variation margin requirements at a time when it is
disadvantageous to do so.

     In addition to the possibility that there may be an imperfect correlation,
or no correlation at all, between movements in the index futures and the portion
of the portfolio being hedged, the prices of index futures may not correlate
perfectly with movements in the underlying index due to certain market
distortions. First, all participants in the futures market are subject to margin
deposit and maintenance requirements. Rather than meeting additional margin
deposit requirements, investors may close futures contracts through offsetting
transactions which could distort the normal relationship between the index and
futures markets. Second, margin requirements in the futures market are less
onerous than margin requirements in the securities market, and as a result the
futures market may attract more speculators than the securities market does.
Increased participation by speculators in the futures market may also cause
temporary price distortions. Due to the possibility of price distortions in the
futures market and also because of the imperfect correlation between movements
in the index and movements in the prices of index futures, even a correct
forecast of general market trends by the Advisor may still not result in a
profitable position over a short time period.

     OPTIONS ON INDEX FUTURES.  Options on index futures are similar to options
on securities except that options on index futures give the purchaser the right,
in return for the premium paid, to assume a position in an index futures
contract (a long position if the option is a call and a short position if the
option is a put) at a specified exercise price at any time during the period of
the option. Upon exercise of the option, the delivery of the futures position by
the writer of the option to the holder of the option will be accompanied by
delivery of the accumulated balance in the writer's futures margin account which
represents the amount by which the market price of the index futures contract,
at exercise, exceeds (in the case of a call) or is less than (in the case of a
put) the exercise price of the option on the index future. If an option is
exercised on the last trading day prior to its expiration date, the settlement
will be made entirely in cash equal to the difference between the exercise price
of the option and the closing level of the index on which the future is based on
the expiration date. Purchasers of options who fail to exercise their options
prior to the exercise date suffer a loss of the premium paid.

OPTIONS ON INDICES

     As an alternative to purchasing call and put options on index futures, the
Trust may purchase and sell call and put options on the underlying indices
themselves. Such options would be used in a manner identical to the use of
options on index futures.

INDEX WARRANTS

     The Trust may purchase put warrants and call warrants whose values vary
depending on the change in the value of one or more specified securities indices
("index warrants"). Index warrants are generally issued by banks or other
financial institutions and give the holder the right, at any time during the
term of the warrant, to receive upon exercise of the warrant a cash payment from
the issuer based on the value of the underlying index at the time of exercise.
In general, if the value of the underlying index rises above the exercise price
of the index warrant, the holder of a call warrant will be entitled to receive a
cash payment from the issuer upon exercise based on the difference between the
value of the index and the exercise price of the warrant. If the value of the
underlying index falls, the holder of a put warrant will be entitled to receive
a cash payment from the issuer upon exercise based on the difference between the
exercise price of the warrant and the value of the index. The holder of a
warrant would not be entitled to any payments from the issuer at any time when,
in the case of a call warrant, the exercise price is greater than the value

                                      B-54
<PAGE>   102

of the underlying index, or, in the case of a put warrant, the exercise price is
less than the value of the underlying index. If the Trust were not to exercise
an index warrant prior to its expiration, then the Trust would lose the amount
of the purchase price paid by it for the warrant.

     The Trust will normally use index warrants in a manner similar to its use
of options on securities indices. The risks of the Trust's use of index warrants
are generally similar to those relating to its use of index options. Unlike most
index options, however, index warrants are issued in limited amounts and are not
obligations of a regulated clearing agency, but are backed only by the credit of
the bank or other institution which issues the warrant. Also, index warrants
generally have longer terms than index options. Although the Trust will normally
invest only in exchange-listed warrants, index warrants are not likely to be as
liquid as certain index options backed by a recognized clearing agency. In
addition, the terms of index warrants may limit the Trust's ability to exercise
the warrants at such time, or in such quantities, as the Trust would otherwise
wish to do.

ZERO COUPON SECURITIES (ZEROS)

     The Trust may invest in zero coupon securities, which are securities issued
at a significant discount from face value and pay interest only at maturity
rather than at intervals during the life of the security and in certificates
representing undivided interests in the interest or principal of mortgage-backed
securities (interest only/principal only), which tend to be more volatile than
other types of securities. The Trust will accrue and distribute income from zero
coupon and stripped securities and certificates on a current basis and may have
to sell securities to generate cash for distributions.

INVERSE FLOATERS

     Inverse floaters are derivative securities whose interest rates vary
inversely to changes in short-term interest rates and whose values fluctuate
inversely to changes in long-term interest rates. The value of certain inverse
floaters will fluctuate substantially more in response to a given change in
long-term rates than would a traditional debt security. These securities have
investment characteristics similar to leverage, in that interest rate changes
have a magnified effect on the value of inverse floaters.

                                      B-55
<PAGE>   103

                                  TAX MATTERS

FEDERAL INCOME TAX MATTERS

  Federal Taxation of the Trust

     The ability of the Trust to qualify for taxation as a regulated investment
company under Subchapter M of the Code requires, among other things, that the
Trust distribute to its shareholders with respect to each year at least 90% of
the sum of (1) its net tax-exempt interest income and (2) its taxable net
investment income (including, generally, taxable interest, dividends and certain
other income, less certain expenses, and the excess, if any, of net short-term
capital gain over net long-term capital loss) (the "Distribution Requirement").

     In addition to satisfying the Distribution Requirement for each taxable
year, a regulated investment company must derive at least 90% of its gross
income from dividends, interest, certain payments with respect to securities
loans, gains from the sale or other disposition of stock or securities or
foreign currencies (to the extent such currency gains are directly related to
the regulated investment company's principal business of investing in stock or
securities, or options and futures with respect to stock or securities) and
other income (including but not limited to gains from options, futures or
forward contracts) derived with respect to its business of investing in such
stock, securities or currencies (the "Income Requirement").

     Further, the Trust must satisfy an asset diversification test in order to
qualify as a regulated investment company. Under this test, at the close of each
quarter of the Trust's taxable year, at least 50% of the value of the Trust's
assets must consist of cash and cash items (including receivables), U.S.
Government securities, securities of other regulated investment companies, and
securities of other issuers (as to which the Trust has not invested more than 5%
of the value of the Trust's total assets in securities of such issuer and as to
which the Trust does not hold more than 10% of the outstanding voting securities
of such issuer), and no more than 25% of the value of its total assets may be
invested in the securities of any one issuer (other than U.S. Government
securities and securities of other regulated investment companies), or in two or
more issuers which the Trust controls and which are engaged in the same or
similar trades or businesses or related trades or businesses.

     A 4% non-deductible excise tax is imposed on a regulated investment company
that fails to distribute in each calendar year an amount at least equal to the
sum of 98% of ordinary taxable income for the calendar year and 98% of capital
gain net income for the one-year period ended on October 31 of such calendar
year (or, at the election of a regulated investment company having a taxable
year ending November 30 or December 31, for its taxable year), plus 100% of any
undistributed income from the preceding year. For the foregoing purposes, a
regulated investment company is treated as having distributed any amount on
which it is subject to income tax for any taxable year ending in such calendar
year.

     The Trust generally intends to make sufficient distributions or deemed
distributions of its ordinary taxable income and capital gain net income prior
to the end of each calendar year to avoid liability for the excise tax. However,
investors should note that the Trust may in certain circumstances be required to
liquidate portfolio investments to make sufficient distributions to avoid excise
tax liability. In addition, the Trust may elect to pay the excise tax liability
if it determines that the costs of making an excise tax distribution are greater
than the excise tax liability that would be due upon the failure to make such
excise tax distribution.

     If the Trust does not qualify for taxation as a regulated investment
company for any taxable year, the Trust's income will be subject to corporate
income taxes imposed at the Trust level, and all distributions from earnings and
profits, including distributions of net exempt-interest income and net capital
gain (i.e., the excess, if any, of net long-term capital gain over net
short-term capital loss), will be taxable to shareholders as ordinary income. In
addition, in order to requalify for taxation as a regulated investment

                                      B-56
<PAGE>   104

company, the Trust may be required to recognize unrealized gains, pay
substantial taxes and interest, and make certain distributions.

     If at any time when shares of Municipal Preferred are outstanding the Trust
does not meet applicable asset coverage requirements, the Trust will be required
to suspend distributions to holders of Common Shares until the requisite asset
coverage is restored. Any such suspension may cause the Trust to pay the 4%
Federal excise tax described above and may prevent the Trust from satisfying the
Distribution Requirement. The Trust may redeem shares of Municipal Preferred in
an effort to comply with the Distribution Requirement and to avoid the excise
tax. See "Description of Municipal Preferred -- Dividends."

  Federal Taxation of Shareholders

     DIVIDENDS AND OTHER DISTRIBUTIONS.  In order for any distributions to
holders of shares of Municipal Preferred to be eligible to be treated as
exempt-interest dividends, the shares of Municipal Preferred must be treated as
equity for Federal income tax purposes. Based in part on certain representations
made by the Trust to Ropes & Gray relating to the lack of any present intention
to redeem or purchase shares of Municipal Preferred at any time in the future,
it is the opinion of Ropes & Gray that the shares of Municipal Preferred will
constitute equity for Federal income tax purposes. This opinion relies in part
on a published ruling of the Internal Revenue Service stating that certain
auction rate preferred stock similar in many material respects to the Municipal
Preferred represents equity. The opinion of Ropes & Gray represents only its
best legal judgment and is not binding on the Internal Revenue Service or the
courts. If the Internal Revenue Service were successfully to assert that
variable rate preferred stock such as the Municipal Preferred should be treated
as debt for Federal income tax purposes, dividends on shares of Municipal
Preferred would be treated as taxable interest for Federal income tax purposes.
In such event, dividends on shares of Municipal Preferred would not be increased
by the Trust and holders of shares of Municipal Preferred would not be entitled
to any additional distributions from the Trust (including any Gross-up Payments)
to offset the effect of paying Federal income tax on Trust distributions so
recharacterized as interest. Ropes & Gray has advised the Trust that, should the
Internal Revenue Service pursue in court the position that the shares of
Municipal Preferred should be treated as debt for Federal income tax purposes,
the Internal Revenue Service would be unlikely to prevail.

     Prior proposed legislation that was ultimately not enacted would have
reinstated a deductible tax (the "Environmental Tax"), imposed through tax years
beginning before January 1, 1996, at a rate of 0.12% on a corporation's
alternative minimum taxable income (computed without regard to the alternative
minimum tax net operating loss deduction) in excess of $2 million. If the
Environmental Tax is reinstated, exempt-interest dividends paid by the Trust
that are included in a corporate shareholder's alternative minimum taxable
income may subject such shareholder to the Environmental Tax. It is not possible
for the Trust to predict whether similar legislation might be proposed and
enacted in the future. Corporate shareholders should consult with their own tax
advisors regarding the likelihood of such legislation and its effect on them.

     As discussed in the Prospectus, exempt-interest dividends attributable to
interest received on certain private activity bonds and certain industrial
development bonds will not be tax-exempt to any shareholders who are, within the
meaning of Section 147(a) of the Code, "substantial users" of the facilities
financed by such obligations or bonds or who are "related persons" of such
substantial users. In general, a "substantial user" of a facility includes a
"non-exempt person who regularly uses a part of such facility in his trade or
business." "Related persons" are in general defined to include persons among
whom there exists a relationship, either by family or business, which would
result in a disallowance of losses in transactions among them under various
provisions of the Code (or if they are members of the same controlled group of
corporations under the Code), including a partnership and each of its partners
(and their spouses and minor children), an S corporation and each of its
shareholders (and their spouses and minor children) and various combinations of
these relationships. The foregoing is not a complete statement of all of the
provisions of the Code covering the definitions of "substantial user" and
"related person." For additional information, investors should consult their tax
advisors before investing in Municipal Preferred.
                                      B-57
<PAGE>   105

     All or a portion of interest on indebtedness incurred or continued by a
shareholder to purchase or carry Trust shares may not be deductible by the
shareholder. The portion of interest that is not deductible is equal to the
total interest paid or accrued on the indebtedness multiplied by the percentage
of the Trust's total distributions (not including distributions of net capital
gain) paid to the shareholder that are exempt-interest dividends. Under rules
used by the Internal Revenue Service for determining when borrowed funds are
considered to have been used for the purpose of purchasing or carrying
particular assets, the purchase of shares of Municipal Preferred may be
considered to have been made with borrowed funds even though such funds are not
directly traceable to the purchase of shares.

     Under Federal tax law in effect at the date of this Prospectus, a
shareholder's interest deduction generally will not be disallowed if the average
adjusted basis of the shareholder's tax-exempt obligations (including shares of
Municipal Preferred) does not exceed two percent of the average adjusted basis
of the shareholder's trade or business assets (in the case of most corporations
and some individuals) and portfolio investments (in the case of individuals).
Prior proposed legislation that was ultimately not enacted would have further
limited or repealed this two-percent de minimis exception, which could reduce
the total after-tax yield of the Municipal Preferred to investors to whom the de
minimis exception would otherwise apply. It is not possible for the Trust to
predict whether similar legislation might be proposed and enacted in the future.
Shareholders should consult with their own tax advisors regarding the likelihood
of such legislation and its effect on them.

     SALES OR REDEMPTIONS OF SHARES.  From time to time the Trust may make a
tender or repurchase offer for its Common Shares. It is expected that the terms
of any such offer will require a tendering shareholder to tender all Common
Shares, and dispose of all shares of Municipal Preferred, held or considered
under Code rules to be held by such shareholder. Shareholders who tender all
Common Shares and dispose of all shares of Municipal Preferred held, or
considered held, by them will be treated as having sold such shares and
generally will realize a capital gain or loss. If, however, a shareholder
tenders fewer than all of its Common Shares, or retains a substantial portion of
its Municipal Preferred, such shareholder may be treated as having received a
taxable dividend upon the tender of its Common Shares. In such a case, there is
a remote risk that non-tendering shareholders (including holders of Municipal
Preferred) will be treated as having received taxable distributions from the
Trust. Likewise, if the Trust redeems some but not all of the Municipal
Preferred held by a holder of Municipal Preferred and such holder of Municipal
Preferred is treated as having received a taxable dividend upon such redemption,
there is a remote risk that holders of Common Shares and non-redeeming holders
of Municipal Preferred will be treated as having received taxable distributions
from the Trust.

     BACKUP WITHHOLDING.  The Trust generally is required to withhold and remit
to the U.S. Treasury 31% of the taxable dividends and other distributions paid
to non-corporate shareholders who fail to furnish the Trust with a correct
taxpayer identification number, who have underreported dividends or interest
income, or who fail to certify to the Trust that they are not subject to such
withholding. An individual's taxpayer identification number is his or her social
security number.

     FOREIGN INVESTORS.  Non-resident alien individuals, foreign corporations
and certain other foreign entities generally will be subject to a U.S.
withholding tax at a rate of 30% on the Trust's distributions from its ordinary
income and the excess of its net short-term capital gain over its net long-term
capital loss, unless the tax is reduced or eliminated by an applicable tax
treaty. Distributions from the excess of the Trust's net capital gain received
by such shareholders and any gain from the sale or other disposition of shares
of the Trust generally will not be subject to U.S. Federal income taxation,
provided that non-resident alien status has been certified by the shareholder.
Different U.S. tax consequences may result if the shareholder is engaged in a
trade or business in the United States, is present in the United States for a
sufficient period of time during a taxable year to be treated as a U.S.
resident, or fails to provide any required certifications regarding status as a
non-resident alien investor. Foreign shareholders should consult their tax
advisors regarding the U.S. and foreign tax consequences of an investment in the
Trust.

     The Internal Revenue Service recently revised its regulations affecting the
application to foreign investors of the back-up withholding and withholding tax
rules described above. The new regulations will

                                      B-58
<PAGE>   106

generally be effective for payments made after December 31, 2000. In some
circumstances, the new rules will increase the certification and filing
requirements imposed on foreign investors in order to qualify for exemption from
the 31% back-up withholding tax and for reduced withholding tax rates under
income tax treaties. Foreign investors in the Trust should consult their tax
advisors with respect to the potential application of these new regulations.

     The foregoing is a general, abbreviated summary of the provisions of the
Code and regulations thereunder presently in effect as they directly govern the
taxation of the Trust and owners of shares of Municipal Preferred. These
provisions are subject to change by legislative or administrative action, and
any such change may be retroactive with respect to Trust transactions. Owners of
shares of Municipal Preferred are advised to consult with their own tax advisors
for more detailed information concerning Federal income tax matters.

FOREIGN, STATE AND LOCAL TAX MATTERS

     The exemption from Federal income tax for exempt-interest dividends does
not necessarily result in exemption for such dividends under the income or other
tax laws of any foreign, state or local taxing authority. Some states exempt
from state income tax that portion of any exempt-interest dividend that is
derived from interest received by a regulated investment company on its holdings
of securities of that state and its political subdivisions and
instrumentalities. Therefore, the Trust will report annually to its shareholders
the percentage of interest income earned by the Trust during the preceding year
on tax-exempt obligations indicating, on a state-by-state basis, the source of
such income. Holders of shares of Municipal Preferred are advised to consult
with their own tax advisors about foreign, state and local tax matters.

                             SHAREHOLDER LIABILITY

     Under Massachusetts law, shareholders could, under certain circumstances,
be held personally liable for the obligations of the Trust. However, the
Declaration disclaims shareholder liability for acts or obligations of the Trust
and requires that a notice of such disclaimer be given in each agreement,
obligation or instrument entered into or executed by the Trust or the Trustees.
The Declaration provides for indemnification out of Trust property for all loss
and expense of any shareholder held personally liable for the obligations of the
Trust. Thus, the risk of a shareholder's incurring financial loss on account of
shareholder liability is limited to circumstances (which are considered remote)
in which the Trust would be unable to meet its obligations and the disclaimer
was inoperative.

                                   CUSTODIAN

     The Chase Manhattan Bank, located at 270 Park Avenue, New York, New York
10017-2070, is the Trust's custodian. The custodian is responsible for
safeguarding the Trust's cash and securities, receiving and delivering
securities and collecting the Trust's interest and dividends.

                            INDEPENDENT ACCOUNTANTS

     PricewaterhouseCoopers LLP are the Trust's independent accountants,
providing audit and tax return preparation services and assistance and
consultation in connection with the review of various Securities and Exchange
Commission filings. The address of PricewaterhouseCoopers LLP is 160 Federal
Street, Boston, Massachusetts 02110. The financial statements included in this
SAI have been so included, and the financial highlights included in the
Prospectus have been so included, in reliance upon the report of
PricewaterhouseCoopers LLP given on the authority of said firm as experts in
accounting and auditing.

                                      B-59
<PAGE>   107

                                    GLOSSARY

     " 'AA' Composite Commercial Paper Rate" has the meaning set forth on pages
B-17 to B-18 of this Statement of Additional Information.

     "Advisor" means Colonial Management Associates, Inc.

     "Affected Series" has the meaning set forth on page B-33 of this Statement
of Additional Information.

     "Affiliate" means, for purposes of the definition of "Outstanding," any
Person known to the Auction Agent to be controlled by, in control of or under
common control with the Trust; provided, however, that no Broker-Dealer
controlled by, in control of or under common control with the Trust shall be
deemed to be an Affiliate nor shall any corporation or any Person controlled by,
in control of or under common control with such corporation one of the
directors, trustees or executive officers of which is a trustee of the Trust be
deemed to be an Affiliate solely because such director, trustee or executive
officer is also a trustee of the Trust.

     "Agent Member" means a member of or participant in the Securities
Depository that will act on behalf of a Bidder.

     "Anticipation Notes" means Tax Anticipation Notes (TANs), Revenue
Anticipation Notes (RANs), Tax and Revenue Anticipation Notes (TRANs), Grant
Anticipation Notes (GANs) that are rated by Standard & Poor's and Bond
Anticipation Notes (BANs).

     "Applicable Rate" has the meaning set forth on page B-13 of this Statement
of Additional Information.

     "Auction" means each periodic implementation of the Auction Procedures.

     "Auction Agency Agreement" has the meaning set forth on page B-13 of this
Statement of Additional Information.

     "Auction Agent" means the entity appointed as such by a resolution of the
Board of Trustees.

     "Auction Date," with respect to any Rate Period, means the Business Day
next preceding the first day of such Rate Period.

     "Auction Procedures" means the procedures for conducting Auctions as
described in this Statement of Additional Information, including Appendix B
hereto.

     "Available Municipal Preferred" has the meaning set forth on page B-21 of
this Statement of Additional Information.

     "Benchmark Rate" has the meaning set forth on page B-22 of this Statement
of Additional Information.

     "Beneficial Owner" has the meaning set forth on page B-13 of this Statement
of Additional Information.

     "Bid" has the meaning set forth on page B-15 of this Statement of
Additional Information.

     "Bidder" and "Bidders" have the respective meanings set forth on page B-15
of this Statement of Additional Information.

     "Board of Trustees" or "Board" means the Board of Trustees of the Trust or
any duly authorized committee thereof.

     "Broker-Dealer" means any broker-dealer, commercial bank or other entity
permitted by law to perform the functions required of a Broker-Dealer, that is a
member of, or a participant in, the Securities Depository or is an affiliate of
such member or participant, has been selected by the Trust and has entered into
a Broker-Dealer Agreement that remains effective.

                                      B-60
<PAGE>   108

     "Broker-Dealer Agreement" means an agreement among the Trust, the Auction
Agent and a Broker-Dealer pursuant to which such Broker-Dealer agrees to follow
the procedures specified in the By-Laws, the Prospectus and this Statement of
Additional Information.

     "Business Day" has the meaning set forth on page B-13 of this Statement of
Additional Information.

     "By-Laws" means the Amended and Restated By-Laws of Colonial Investment
Grade Municipal Trust on file with the Secretary of the Commonwealth of
Massachusetts.

     "Cede" means Cede & Co., the nominee of DTC in whose name the shares of
Municipal Preferred initially will be registered.

     "CFTC" has the meaning set forth on page B-51 of this Statement of
Additional Information.

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

     "Commercial Paper Dealers" has the meaning set forth on page B-18 of this
Statement of Additional Information.

     "Common Shares" means the common shares of beneficial interest, without par
value, of the Trust.

     "Cure Date" means the Municipal Preferred Basic Maintenance Cure Date or
the 1940 Act Cure Date, as the case may be.

     "Date of Original Issue" has the meaning set forth on page B-13 of this
Statement of Additional Information.

     "Declaration" means the Agreement and Declaration of Trust of Colonial
Investment Grade Municipal Trust, as amended, on file with the Secretary of the
Commonwealth of Massachusetts.

     "Deposit Securities" means cash and Municipal Obligations rated at least
A-1+ or SP-1+ by Standard & Poor's, except that, for purposes of determining
whether the Trust may mail a Notice of Redemption, such Municipal Obligations
shall be considered "Deposit Securities" only if they are also rated P-1, MIG-1
or VMIG-1 by Moody's.

     "Discount Factor" means a Moody's Discount Factor or a Standard & Poor's
Discount Factor, as the case may be.

     "Discounted Value" means, as of any Valuation Date, (i) with respect to a
Standard & Poor's Eligible Asset, the quotient of the Market Value thereof
divided by the applicable Standard & Poor's Discount Factor and (ii)(a) with
respect to a Moody's Eligible Asset that is not currently callable as of such
Valuation Date at the option of the issuer thereof, the quotient of the Market
Value thereof divided by the applicable Moody's Discount Factor, or (b) with
respect to a Moody's Eligible Asset that is currently callable as of such
Valuation Date at the option of the issuer thereof, the quotient of (1) the
lesser of the Market Value or call price thereof, including any call premium,
divided by (2) the applicable Moody's Discount Factor.

     "Dividend Payment Date" has the meaning set forth on page B-13 of this
Statement of Additional Information.

     "Dividend Period" has the meaning set forth on page B-13 of this Statement
of Additional Information.

     "DTC" has the meaning set forth on page B-14 of this Statement of
Additional Information.

     "Eligible Assets" means Moody's Eligible Assets or Standard & Poor's
Eligible Assets, as the case may be.

     "Escrowed Bonds" means Municipal Obligations that (i) have been determined
to be legally defeased in accordance with Standard & Poor's legal defeasance
criteria, (ii) have been determined to be economically defeased in accordance
with Standard & Poor's economic defeasance criteria and assigned a rating of AAA
by Standard & Poor's, (iii) are not rated by Standard & Poor's but have been
determined
                                      B-61
<PAGE>   109

to be legally defeased by Moody's, or (iv) have been determined to be
economically defeased by Moody's and assigned a rating no lower than the rating
that is Moody's equivalent of Standard & Poor's AAA rating.

     "Exchange" has the meaning set forth on page B-45 of this Statement of
Additional Information.

     "Existing Holder" has the meaning set forth on page B-13 of this Statement
of Additional Information.

     "Failure to Deposit," with respect to shares of Municipal Preferred, means
a failure by the Trust to pay to the Auction Agent, not later than 12:00 noon,
Eastern time, (A) on the Business Day next preceding any Dividend Payment Date
for such shares, in funds available on such Dividend Payment Date in The City of
New York, New York, the full amount of any dividend (whether or not earned or
declared) to be paid on such Dividend Payment Date on any share or (B) on the
Business Day next preceding any redemption date in funds available on such
redemption date for such shares in The City of New York, New York, the
Redemption Price to be paid on such redemption date for any share after Notice
of Redemption is mailed as set forth in the By-Laws, the Prospectus or this
Statement of Additional Information; provided, however, that the foregoing
clause (B) shall not apply to the Trust's failure to pay the Redemption Price in
respect of shares of Municipal Preferred when the related Notice of Redemption
provides that redemption of such shares is subject to one or more conditions
precedent and any such condition precedent shall not have been satisfied at the
time or times and in the manner specified in such Notice of Redemption.

     "Gross-up Payment" has the meaning set forth on page B-29 of this Statement
of Additional Information.

     "Hold Order" has the meaning set forth on page B-15 of this Statement of
Additional Information.

     "Holder" means the registered holder of shares of Municipal Preferred as
the same appears on the record books of the Trust.

     "Initial Margin" means the amount of cash or securities deposited with a
broker as a margin payment at the time of purchase or sale of a futures
contract.

     "Initial Rate Period" has the meaning set forth on page B-13 of this
Statement of Additional Information.

     "IRS" means the Internal Revenue Service.

     "Inverse Floater" shall mean trust certificates or other instruments
evidencing interests in one or more municipal securities that qualify as
Standard & Poor's Eligible Assets (and are not part of a private placement of
municipal securities and satisfy the issuer and size requirements of the
definition of Standard & Poor's Eligible Assets) the interest rates on which are
adjusted at short-term intervals on a basis that is inverse to the simultaneous
readjustment of the interest rates on corresponding floating rate trust
certificates or other instruments issued by the same issuer, provided that the
ratio of the aggregate dollar amount of floating rate instruments to inverse
floating rate instruments issued by the same issuer does not exceed one to one
at their time of original issuance unless the floating rate instrument has only
one reset remaining until maturity.

     "Kenny Index" has the meaning set forth on page B-17 of this Statement of
Additional Information.

     "Late Charge" has the meaning set forth on page B-27 of this Statement of
Additional Information.

     "Liquidation Preference," with respect to a given number of shares of
Municipal Preferred, means $25,000 times that number.

     "Market Value" of any asset of the Trust means the market value thereof
determined by the pricing service designated from time to time by the Board of
Trustees. Market Value of any asset shall include any interest accrued thereon.
The pricing service will use current industry standards to value portfolio
securities. The pricing service may employ electronic data processing techniques
or a matrix system, or
                                      B-62
<PAGE>   110

both, to determine valuations. Securities for which quotations are not readily
available shall be valued at fair value as determined by the pricing service
using methods which include consideration of: yields or prices of municipal
bonds of comparable quality, type of issue, coupon, maturity and rating;
indications as to value from dealers; and general market conditions. In the
event the pricing service is unable to value a security, the security shall be
valued at the lower of two dealer bids obtained by the Trust from dealers who
are members of the National Association of Securities Dealers, Inc. and make a
market in the security, at least one of which shall be in writing. Futures
contracts and options are valued at closing prices for such instruments
established by the exchange or board of trade on which they are traded, or if
market quotations are not readily available, are valued at fair value on a
consistent basis using methods determined in good faith by the Trustees.

     "Maximum Potential Gross-up Payment Liability" has the meaning set forth on
page B-36 of this Statement of Additional Information.

     "Maximum Rate" has the meaning set forth on pages B-16 to B-17 of this
Statement of Additional Information.

     "Minimum Rate Period" means any Rate Period consisting of 7 Rate Period
Days.

     "Moody's" means Moody's Investors Service, Inc. and its successors.

     "Moody's Discount Factors" has the meaning set forth on page B-38 of this
Statement of Additional Information.

     "Moody's Eligible Assets" has the meaning set forth on page B-38 of this
Statement of Additional Information.

     "Moody's Exposure Period" has the meaning set forth on page B-39 of this
Statement of Additional Information.

     "Moody's Volatility Factor" means, as of any Valuation Date, (i) in the
case of any Minimum Rate Period, any Special Rate Period of 28 Rate Period Days
or fewer, or any Special Rate Period of 57 Rate Period Days or more, a
multiplicative factor equal to 275%, except as otherwise provided in the last
sentence of this definition; (ii) in the case of any Special Rate Period of more
than 28 but fewer than 36 Rate Period Days, a multiplicative factor equal to
203%; (iii) in the case of any Special Rate Period of more than 35 but fewer
than 43 Rate Period Days, a multiplicative factor equal to 217%; (iv) in the
case of any Special Rate Period of more than 42 but fewer than 50 Rate Period
Days, a multiplicative factor equal to 226%; and (v) in the case of any Special
Rate Period of more than 49 but fewer than 57 Rate Period Days, a multiplicative
factor equal to 235%. If, as a result of the enactment of changes to the Code,
the greater of the maximum marginal Federal individual income tax rate
applicable to ordinary income and the maximum marginal Federal corporate income
tax rate applicable to ordinary income will increase, such increase being
rounded up to the next five percentage points, until the effective date of such
increase, the Moody's Volatility Factor in the case of any Rate Period described
in (i) above in this definition instead shall be determined by reference to the
following table:

<TABLE>
<CAPTION>
FEDERAL TAX                                                   VOLATILITY
RATE INCREASE                                                   FACTOR
- -------------                                                 ----------
<S>                                                           <C>
      5%....................................................     295%
     10%....................................................     317%
     15%....................................................     341%
     20%....................................................     369%
     25%....................................................     400%
     30%....................................................     436%
     35%....................................................     477%
     40%....................................................     525%
</TABLE>

                                      B-63
<PAGE>   111

     "Municipal Obligations" shall mean "Municipal Obligations" as defined on
page 10 of the prospectus filed as part of the Trust's registration statement on
Form N-2 on file with the Securities and Exchange Commission.

     "Municipal Preferred" means the Municipal Auction Rate Cumulative Preferred
Shares, without par value, liquidation preference $25,000 per share, of the
Trust.

     "Municipal Preferred Basic Maintenance Amount" has the meaning set forth on
page B-35 of this Statement of Additional Information.

     "Municipal Preferred Basic Maintenance Cure Date" has the meaning set forth
on page B-35 of this Statement of Additional Information.

     "Municipal Preferred Basic Maintenance Report" has the meaning set forth on
page B-36 of this Statement of Additional Information.

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

     "1940 Act Cure Date" has the meaning set forth on pages B-34 to B-35 of
this Statement of Additional Information.

     "1940 Act Municipal Preferred Asset Coverage" has the meaning set forth on
page B-34 of this Statement of Additional Information.

     "Notice of Redemption" has the meaning set forth on page B-42 of this
Statement of Additional Information.

     "Notice of Special Rate Period" has the meaning set forth on page B-31 of
this Statement of Additional Information.

     "Order" and "Orders" have the respective meanings set forth on page B-15 of
this Statement of Additional Information.

     "Outstanding" means, as of any Auction Date with respect to shares of
Municipal Preferred, the number of such shares theretofore issued by the Trust
except, without duplication, (i) any shares of Municipal Preferred theretofore
canceled or delivered to the Auction Agent for cancellation or redeemed by the
Trust, (ii) any shares of Municipal Preferred as to which the Trust or any
Affiliate thereof shall be an Existing Holder, and (iii) any shares of Municipal
Preferred represented by any certificate in lieu of which a new certificate has
been executed and delivered by the Trust.

     "Person" means and includes an individual, a partnership, a corporation, a
trust, an unincorporated association, a joint venture or other entity or a
government or any agency or political subdivision thereof.

     "Potential Beneficial Owner" has the meaning set forth on page B-13 of this
Statement of Additional Information.

     "Potential Holder" has the meaning set forth on page B-13 of this Statement
of Additional Information.

     "Preferred Shares" means the preferred shares of beneficial interest,
without par value of the Trust, and includes the Municipal Preferred.

     "Rate Multiple" has the meaning set forth on page B-19 of this Statement of
Additional Information.

     "Rate Period" has the meaning set forth on page B-13 of this Statement of
Additional Information.

     "Rate Period Days," for any Rate Period or Dividend Period, means the
number of days that would constitute such Rate Period or Dividend Period but for
the application of the second paragraph under "Description of Municipal
Preferred -- Dividends -- General" or the second paragraph under "Description of
Municipal Preferred -- Dividends -- Designation of Special Rate Periods."

                                      B-64
<PAGE>   112

     "Receivables for Municipal Obligations Sold," for purposes of calculating
Moody's Eligible Assets or Standard & Poor's Eligible Assets, as the case may
be, has the meaning set forth on pages B-39 and B-37 of this Statement of
Additional Information, respectively.

     "Redemption Price" has the meaning set forth on page B-42 of this Statement
of Additional Information.

     "Reference Rate" has the meaning set forth on page B-17 of this Statement
of Additional Information.

     "SEC" means the Securities and Exchange Commission.

     "Securities Depository" means The Depository Trust Company and its
successors and assigns or any other securities depository selected by the Trust
which agrees to follow the procedures required to be followed by such securities
depository in connection with shares of Municipal Preferred.

     "Sell Order" has the meaning set forth on page B-15 of this Statement of
Additional Information.

     "Special Rate Period" has the meaning set forth on page B-13 of this
Statement of Additional Information.

     "Special Redemption Provisions" has the meaning set forth on page B-41 of
this Statement of Additional Information.

     "Standard & Poor's" means Standard & Poor's Ratings Services, a division of
The McGraw-Hill Companies, Inc. and its successors.

     "Standard & Poor's Discount Factors" has the meaning set forth on page B-36
of this Statement of Additional Information.

     "Standard & Poor's Eligible Assets" has the meaning set forth on page B-36
of this Statement of Additional Information.

     "Standard & Poor's Exposure Period" has the meaning set forth on page B-37
of this Statement of Additional Information.

     "Standard & Poor's Volatility Factor" means, as of any Valuation Date, a
multiplicative factor equal to (i) 305% in the case of any Minimum Rate Period
or any Special Rate Period of 28 Rate Period Days or fewer, (ii) 268% in the
case of any Special Rate Period of more than 28 Rate Period Days but fewer than
183 Rate Period Days, and (iii) 204% in the case of any Special Rate Period of
more than 182 Rate Period Days.

     "Submission Deadline" means 1:30 P.M., Eastern time, on any Auction Date or
such other time on any Auction Date by which Broker-Dealers are required to
submit Orders to the Auction Agent as specified by the Auction Agent from time
to time.

     "Submitted Bid" and "Submitted Bids" have the respective meanings set forth
on page B-21 of this Statement of Additional Information.

     "Submitted Hold Order" and "Submitted Hold Orders" have the respective
meanings set forth on page B-21 of this Statement of Additional Information.

     "Submitted Order" and "Submitted Orders" have the respective meanings set
forth on page B-21 of this Statement of Additional Information.

     "Submitted Sell Order" and "Submitted Sell Orders" have the respective
meanings set forth on page B-21 of this Statement of Additional Information.

     "Subsequent Rate Period" has the meaning set forth on page B-13 of this
Statement of Additional Information.

                                      B-65
<PAGE>   113

     "Substitute Commercial Paper Dealer" has the meaning set forth on page B-18
of this Statement of Additional Information.

     "Substitute U.S. Government Securities Dealer" has the meaning set forth on
page B-19 of this Statement of Additional Information.

     "Sufficient Clearing Bids" has the meaning set forth on page B-21 of this
Statement of Additional Information.

     "Taxable Allocation" has the meaning set forth on page B-28 of this
Statement of Additional Information.

     "Taxable Equivalent of the Short-Term Municipal Bond Rate" has the meaning
set forth on page B-17 of this Statement of Additional Information.

     "Taxable Income" has the meaning set forth on page B-22 of this Statement
of Additional Information.

     "Taxable Yield Rate" has the meaning set forth on page B-22 of this
Statement of Additional Information.

     "Treasury Bill" has the meaning set forth on page B-19 of this Statement of
Additional Information.

     "Treasury Bill Rate" has the meaning set forth on page B-18 of this
Statement of Additional Information.

     "Treasury Note" has the meaning set forth on page B-19 of this Statement of
Additional Information.

     "Treasury Note Rate" has the meaning set forth on page B-19 of this
Statement of Additional Information.

     "Trust" means Colonial Investment Grade Municipal Trust, a Massachusetts
business trust, which is the issuer of the shares of Municipal Preferred.

     "U.S. Government Securities Dealer" has the meaning set forth on page B-19
of this Statement of Additional Information.

     "Valuation Date" has the meaning set forth on page B-35 of this Statement
of Additional Information.

     "Variation Margin" means, in connection with an outstanding futures
contract owned or sold by the Trust, the amount of cash or securities paid to or
received from a broker (subsequent to the Initial Margin payment) from time to
time as the price of such futures contract fluctuates.

     "Volatility Factor" means, as of any Valuation Date, the greater of the
Moody's Volatility Factor and the Standard & Poor's Volatility Factor.

     "Voting Period" means a period that shall commence (A) if at the close of
business on any dividend payment date accumulated dividends (whether or not
earned or declared) on any outstanding Preferred Share, including Municipal
Preferred, equal to at least two full years' dividends shall be due and unpaid
and sufficient cash or specified securities shall not have been deposited with
the Auction Agent for the payment of such accumulated dividends; or (B) if at
any time holders of Preferred Shares are entitled under the 1940 Act to elect a
majority of the trustees of the Trust.

     "Winning Bid Rate" has the meaning set forth on page B-21 of this Statement
of Additional Information.

                                      B-66
<PAGE>   114
                              FINANCIAL STATEMENTS


                              INVESTMENT PORTFOLIO
                        DECEMBER 31, 1998 (IN THOUSANDS)

<TABLE>
<CAPTION>
MUNICIPAL BONDS - 97.9%                                           PAR    VALUE
- -------------------------------------------------------------------------------
<S>                                                         <C>        <C>
EDUCATION - 7.7%
   EDUCATION - 6.5%
   CA State Educational Facilities
    Authority, Santa Clara University,
    Series 1996,
                           5.000%    09/01/15 (i)           $ 1,050    $ 1,064
   IL Chicago State University Trustees,
                           5.500%    12/01/23                 1,085      1,154
   MA State Industrial Finance Agency,
    Tabor Academy,
    Series 1998,
                           5.400%    12/01/28                 1,000      1,007
   MN University of Minnesota, Series 1996-A:
                           5.750%    07/01/14                   500        560
                           5.500%    07/01/21                 2,000      2,167
   NY State Lawrence University,
                           5.500%    07/01/13                 1,465      1,582
   RI Roger Williams University,
                           5.125%    11/15/12                 1,000      1,040
                                                                      --------
                                                                         8,574
                                                                      --------
   STUDENT LOAN - 1.2%
   NE Nebhelp, Inc.,
    Series 1993 A A-6,
                           6.450%    06/01/18                 1,500      1,625
                                                                      --------

 ..............................................................................
</TABLE>


                                      F-1
<PAGE>   115
<TABLE>
<S>                                                         <C>        <C>
 HEALTHCARE - 14.8%
   HOSPITAL - 8.4%
   AL Alabama Special Care Facilities Authority,
    Montgomery Healthcare,
    Series 1989,
                          11.000%    10/01/19                   935        949
   FL Orange County Health Facilities Authority,
    Orlando Regional Healthcare System,
    Series 1996-C,
                           6.250%    10/01/13                 2,460      2,892
   IL Health Facility Authority,
    Series 1992-B,  IFRN (variable rate),
                           9.872%    05/01/21                   700        821
   LA Jefferson Parish Hospital,
                           5.250%    07/01/12 (a)             1,000      1,052
   MN Rochester,
    Mayo Foundation,
    Series 1998-A,
                           5.500%    11/15/27                 1,000      1,046
   NH Higher Educational and Health Facilities
    Catholic Medical Center,
    Series 1989,           6.000%    07/01/17                 2,500      2,525
   TN Metropolitan Government, Nashville
    & Davidson Counties,
    Meharry Medical College,
    Series 1996,
                           6.000%    12/01/16                 1,575      1,801
                                                                      --------
                                                                        11,086
                                                                      --------
   INTERMEDIATE CARE FACILITIES - 1.1%
   IN Wabash First Mortgage, Hoosier
    Care, Inc. ,
   Series 1989-A,
                           9.750%    08/01/19                 1,420      1,484
                                                                      --------
   NURSING HOME - 5.3%
   CO Health Care Facilities Authority
    Pioneer Health Care,
</TABLE>


                                      F-2
<PAGE>   116
    Series 1989,
                          10.500%    05/01/19                 1,710      1,784
   DE State Economic Development Authority,
    Churchman Village Project,
    Series A,
                          10.000%    03/01/21                   975      1,226
   FL Escambia County,
    Beverly Enterprises-Florida, Inc.,
    Series 1985,
                           9.800%    06/01/11                   185        200
   KY Jefferson County Health Facilities
    Beverly Enterprises, Inc.,
    Series 1985-B,
                           9.750%    08/01/07                   680        715
   PA Chester County Industrial Development,
    Pennsylvania Nursing Home, Inc.,
    Series 1989,
                          10.125%    05/01/19 (b)             1,204      1,107
   PA Delaware County Authority,
    Main Line and Haverford Nursing,
    Series 1992,
                           9.000%    08/01/22                   595        686
   WI State Health & Educational Facilities
    Authority, Metro Health Foundation, Inc.,
    Series 1993,
                           8.000%    11/01/22 (c)             1,300      1,300
                                                                      --------
                                                                         7,018
                                                                      --------

 ..............................................................................
 HOUSING - 4.9%
   ASSISTED LIVING/SENIOR - 0.4%
   TX Bell County Health Facilities
    Development Corp., Care Institutions, Inc.,
                           9.000%    11/01/24                   500        573
                                                                      --------
   MULTI-FAMILY - 2.6%
   FL State Housing Finance Agency,


                                      F-3
<PAGE>   117
    Windsong Apartments,
    Series 1993-C,
                           9.250%    01/01/19                   240        216
   MN White Bear Lake,
    Birch Lake Townhome Project:
    Series 1989-A,
                          10.250%    07/15/19                   775        786
    Series 1989-B,
                          (d)        07/15/19                   709        213
   Resolution Trust Corp., Pass Through
   Certificates, Series 1993-A,
                           9.250%    12/01/16 (e)             2,124      2,188
                                                                      --------
                                                                         3,403
                                                                      --------
   SINGLE-FAMILY - 1.9%
   IN State Housing Finance Authority
    Single Family Mortgage-GNMA
    Series 1990-D,
                           7.800%    01/01/22                   110        115
   LA Louisiana Housing Finance Agency,
    Residual Lien Mortgage, Series 1992,
                           7.375%    09/01/13 (d)               550        584

   MA State Housing Finance Agency,
    Series 1988-B,
                           8.100%    08/01/23                   110        114
   NE State Investment Finance Authority,
                           7.550%    03/15/22                   100        104
   OH State Housing Finance Agency,
    Series B-4,
                          10.226%    03/31/31                 1,415      1,579
                                                                      --------
                                                                         2,496
                                                                      --------


                                      F-4
<PAGE>   118
f ..............................................................................
 OTHER - 7.5%
   REFUNDED/ESCROWED (f)
   CA California State,
                           5.750%    03/01/19                 1,930      2,141
   CA San Joaquin Hills Transportation
    Corridor Agency,
    Series 1993,
                          (g)        01/01/23                 5,250      1,571
   CO Denver City and County Airport,
    Series B,
                           7.250%    11/15/23                   205        234
   DC Hospital,
    Washington Hospital Center,
    Corp., Series 1990-A,
                           8.750%    01/01/15                   615        687
   DE State Economic Development Authority,
    Riverside Hospital,
    Series 1992-A,
                           9.500%    01/01/22                   225        285
   FL Clearwater Housing Authority,
    Hampton Apartments,
    Series 1994,
                           8.250%    05/01/24                   700        860
   MI Wayne County Building Authority,
    Series 1992-A,
                           8.000%    03/01/17                   250        286
   MN Mille Lacs Capital Improvement Authority,
    Mille Lacs Band of Chippewa,
    Series 1992-A,
                           9.250%    11/01/12                   245        298
   NC Lincoln County,
    Lincoln County Hospital,
                           9.000%    05/01/07                   160        193
   TN Metropolitan Government, Nashville &
    Davidson Counties,
                           6.150%    05/15/25                 1,000      1,095
   TN Shelby County, Health, Education,
    & Housing Facilities Board, Open Arms
    Development Center:
    Series 1992-A,


                                      F-5
<PAGE>   119
                           9.750%    08/01/19                   455        642
    Series 1992-C,
                           9.750%    08/01/19                   455        642
   TX Bexar Metropolitan Water District,
                           5.000%    05/01/19                 1,000      1,037
                                                                      --------
                                                                         9,971
                                                                      --------

 ..............................................................................
OTHER REVENUE - 1.6%
   HOTELS - 0.3%
   MN Minneapolis,
    Holiday Inn Metrodome Project,
                           6.000%    12/01/01                   350        354
                                                                      --------
   INDUSTRIAL - 1.3%
   MN Brooklyn Park,
    TL Systems Corp.,
    Series 1991,
                          10.000%    09/01/16                   905      1,101
   MN Buffalo,
    Von Ruden Manufacturing, Inc.,
    Series 1989,
                          10.500%    09/01/14                   520        550
                                                                      --------
                                                                         1,651
                                                                      --------

 ..............................................................................
 RESOURCE RECOVERY - 1.2%
   DISPOSAL
   MA State Industrial Finance Agency,
    Peabody Landfill Associates, Inc.:
    Ogden Hill Project,
    Series 1995,
                           9.000%    09/01/05                   220        243


                                      F-6
<PAGE>   120
    Series 1998-A,
                           5.450%    12/01/12                 1,250      1,280
                                                                      --------
                                                                         1,523
                                                                      --------

 ..............................................................................
 TAX-BACKED - 31.4%
   LOCAL APPROPRIATED - 0.9%
   TX Houston Independent School District
    Public Facilities Corp.,
    Series 1998-A,
                          (g)        09/15/13                 2,500      1,220
                                                                      --------
   LOCAL GENERAL OBLIGATIONS - 12.2%
   CO El Paso County School District No. 11,
    Series 1996,
                           7.125%    12/01/19                 1,870      2,419
   CO Highlands Ranch Metropolitan District,
    Series 1996,
                           6.500%    06/15/11                 1,375      1,647
   IL Chicago,
    Series 1995 A-2,
                           6.250%    01/01/14                 1,480      1,732
   IL St. Clair County Public
    Building Commission,
                          (g)        12/01/13                 2,000        969
   MI Grand Ledge Public School District,
    Series 1995,
                           5.375%    05/01/24                 1,750      1,798
   MI St. Johns Public School,
    Series 1998,
                           5.100%    05/01/25                 1,000      1,019
   MN Minneapolis  St Paul Airport,
                           5.250%    01/01/13                 1,000      1,053
   NY New York City,
    Series 1997-A,


                                      F-7
<PAGE>   121
                           7.000%    08/01/07                 2,000      2,373
   PA Philadelphia School District,
    Series B,
                           5.500%    09/01/18                 2,000      2,081
   TX La Joya Independent School District,
    Series 1998,
                           5.500%    02/15/12                 1,000      1,072
                                                                      --------
                                                                        16,163
                                                                      --------
   SPECIAL NON-PROPERTY TAX - 6.2%
   FL Tampa Sports Authority,
    Tampa Bay Arena Project,
    Series 1995,
                           5.750%    10/01/25                 1,000      1,122
   NM Dona Ana County,
    Series 1998,
                           5.500%    06/01/15                 1,000      1,086
   NY New York City Transitional Finance
    Authority: Series A,
                           5.125%    08/15/21                 1,000        999
    Series 1998-C,
                           4.750%    05/01/23                 1,000        951
   NY State Local Government Assistance Corp.,
    Series 1993-E,
                           5.000%    04/01/21                 3,000      3,008
   WV State Building Commission,
    Series 1997-A,
                           5.250%    07/01/09                 1,000      1,077
                                                                      --------
                                                                         8,243
                                                                      --------
   SPECIAL PROPERTY TAX - 1.0%
   CA Contra Costa County
   Public Financing Authority,
    Series 1992-A,
                           7.100%    08/01/22                 1,000      1,094


                                      F-8
<PAGE>   122
   FL Lexington Oaks Community
    Development District, Series 1998-B,
                           5.500%    05/01/05                   250        249
                                                                      --------
                                                                         1,343
                                                                      --------
   STATE APPROPRIATED - 7.9%
   IN State Office Building Commission,
    Women's Prison,
    Series B,
                           6.250%    07/01/16 (h)(i)          2,820      3,291
   NY New York State Dormitory Authority
    Consolidation City University
    Series 1993-A,
                           5.750%    07/01/18                 5,000      5,483
   NY State Medical Care Facilities
    Finance Agency, Mental Health Services
    Facilities Improvement,
    Series 1991-A,
                           7.500%    02/15/21                   100        109
   NY State Urban Development Corp.,
                           5.600%    04/01/15                 1,000      1,086
   WV State Building Commission,
    Series 1998 A,
                           5.375%    07/01/18                   500        529
                                                                      --------
                                                                        10,498
                                                                      --------
   STATE GENERAL OBLIGATIONS - 3.2%
   CA  State,
                           5.750%    03/01/19                    70         76
   CT State,
    Series 1996-C,
                           5.400%    11/01/14                 1,000      1,061
   MA Massachusetts Bay Transportation
    Authority, Series A,
                           5.000%    03/01/19                 1,000        996


                                      F-9
<PAGE>   123
   PR Commonwealth of Puerto Rico
    Aqueduct & Sewer Authority:
                           6.250%    07/01/12                 1,000      1,186
                           6.250%    07/01/13                   750        889
                                                                      --------
                                                                         4,208
                                                                      --------

 ..............................................................................
 TRANSPORTATION - 11.1%
   AIR TRANSPORTATION - 1.7%
   IN Indianapolis Airport Authority,
    Federal Express Corp.,
    Series 1994,
                           7.100%    01/15/17                 1,000      1,119
   NY Port Authority of New York & New Jersey,
    JFK International Air Terminal, Series 6,
                           6.250%    12/01/08                 1,000      1,154
                                                                      --------
                                                                         2,273
                                                                      --------
   AIRPORT - 1.0%
   CO Denver City and County Airport,
    Series B,
                           7.250%    11/15/23                   795        878
   MN Minneapolis-St. Paul Metropolitan
    Airport Commission,
    Series 1998-A,
                           5.000%    01/01/22                   500        497
                                                                      --------
                                                                         1,375
                                                                      --------
   TOLL FACILITIES - 7.4%
   CA Foothill/Eastern Transportation
    Corridor Agency,


                                      F-10
<PAGE>   124
    Series 1995-A,
                           5.000%    01/01/35                 1,000        954
   CA San Joaquin Hills Transportation
    Corridor Agency,
    Series A,
                          (g)        01/15/15                 2,000        910
   CO State Public Highway Authority,
    E-470, Series B,
                          (g)        09/01/11                 2,000      1,117
   FL Orlando & Orange County Expressway
    Authority,   Series 1998,
                           5.000%    07/01/21                 2,500      2,487
   IL Chicago,
    Skyway Bridge,
    Series 1996,
                           5.375%    01/01/16                 1,750      1,819
   MA State Turnpike Authority,
    Series C,
                          (g)        01/01/18                 3,000      1,159
   NH State Turnpike Systems,
    Series 1991-C, IFRN (variable rate),
                          10.159%    11/01/17 (i)             1,000      1,341
                                                                      --------
                                                                         9,787
                                                                      --------
   TRANSPORTATION - 1.0%
   IL Regional Transportation Authority,
    Series C,
                           7.750%    06/01/20                 1,000      1,363
                                                                      --------

 ..............................................................................
 UTILITY - 17.7%
   INDEPENDENT POWER PRODUCER - 0.9%
   FL Martin County Industrial
    Development Authority,
    Indiantown Cogeneration Project,
    Series 1994-A,
                           7.875%    12/15/25                 1,000      1,148
                                                                      --------


                                      F-11
<PAGE>   125
   INVESTOR OWNED - 3.2%
   IN Petersburg Pollution Control,
    Indianapolis Power & Light Company,
    Series 1993-B,
                           5.400%    08/01/17                 3,000      3,189
   MS State Business Finance Corp.,
    Systems Energy Resources Project,
    Series 1998,
                           5.875%    04/01/22                 1,000        998
                                                                      --------
                                                                         4,187
                                                                      --------
   JOINT POWER AUTHORITY - 2.4%
   IN State Municipal Power Agency,
    Series B,
                           6.000%    01/01/12 (i)             2,000      2,293
   MN Southern Minnesota
    Municipal Power Agency,
    Series A,
                           5.000%    01/01/16                   150        150
   NC State Municipal Power Agency,
    Catawba Electric No. 1,
    Series 1998-A,
                           5.500%    01/01/15                   640        696
                                                                      --------
                                                                         3,139
                                                                      --------
   MUNICIPAL ELECTRIC - 5.7%
   CA Sacramento Municipal Utilities District,
    Series L,
                           5.125%    07/01/22                 1,850      1,860
   NC University of North Carolina at
    Chapel Hill,
                          (g)        08/01/14                 1,000        476
   NE Public Power District,
    Series 1998-A,


                                      F-12
<PAGE>   126
                           5.250%    01/01/11                 1,000      1,064
   NY Long Island Power Authority:
    Series 1998-A,
                           5.000%    12/01/18                 1,500      1,496
    Series 1998,
                           5.125%    04/01/12                   500        523
   OH Cleveland,
    Series 1996 1,
                           5.000%    11/15/24                   500        494
   TN Metropolitan Government, Nashville
    & Davidson Counties,
    Series 1996-A,
                          (g)        05/15/09 (i)             1,825      1,166
   TX San Antonio,
    Series 1998-A,
                           4.500%    02/01/21                   500        465
                                                                      --------
                                                                         7,544
                                                                      --------
   WATER & SEWER - 5.5%
   MA State Water Resources Authority,
    Series 1993-B,
                           5.000%    03/01/22                 1,000        974
   MS V Lakes Utility District,
                           8.250%    07/15/24                   140        112
   PA Erie Sewer Authority,
                           5.625%    06/01/17                 1,500      1,590
   SC Chester Metropolitan Water District,
                           5.000%    03/01/15                 1,000      1,022
   TX Houston Water & Sewer System,
    Series D,
                           5.000%    12/01/17                 2,000      2,002
   TX Nueces River Authority,
    Corpus Christi Lake Texana Project,
                           5.250%    07/15/17 (i)             1,500      1,546
                                                                      --------


                                      F-13
<PAGE>   127
                                                                         7,246
                                                                      --------

   TOTAL MUNICIPAL BONDS  (cost of  $ 119,359) (j)                    $129,495
                                                                      --------

SHORT-TERM OBLIGATIONS  - 1.1%
- -------------------------------------------------------------------------------
VARIABLE RATE DEMAND NOTES (k)
   ID State Health Facilities Authority,
    St. Luke's Regional Medical Facility,
    Series 1995,
                           5.100%    05/01/22                   400        400
   IN Portage,
     Pedcor Investments, Series B,
                           4.100%    08/01/30                   245        245
   LA State Offshore Terminal Authority,
    Loop, Inc.,
                           5.100%    09/01/06                   100        100
   NM Farmington,
    Arizona Public Service Co.,
    Four Corners Project, Series 1994-B,
                           5.100%    09/01/24                   100        100
   NY New York City, General Obligation,
    Series B,
                           5.000%    10/01/22                   650        650
                                                                      --------
   TOTAL SHORT-TERM OBLIGATIONS                                          1,495
                                                                      --------

OTHER ASSETS & LIABILITIES, NET - 1.0%                                   1,252
- -------------------------------------------------------------------------------

NET ASSETS - 100.0%                                                   $132,242
                                                                      --------


                                      F-14
<PAGE>   128
NOTES TO INVESTMENT PORTFOLIO:
- -------------------------------------------------------------------------------
(a) This security has been purchased on a delayed delivery basis for settlement
    at a future date beyond the customary settlement date.
(b) This issuer is in default of certain debt covenants. Income is not being
    accrued.
(c) This is a restricted security which was acquired on February 25, 1996 at a
    cost of $1,432. This security represents 1.0% of the Fund's net assets as of
    December 31, 1998.
(d) Accrued interest accumulates in the value of the security and is payable at
    redemption.
(e) This security is exempt from registration under Rule 144A of the Securities
    Act of 1933. This security may be resold in transactions exempt from
    registration, normally to qualified institutional buyers. At December 31,
    1998, the value of this security amounted to $2,188 or 1.7% of net assets.
(f) The Fund has been informed that each issuer has placed direct obligations of
    the U.S. Government in an irrevocable trust, solely for the payment of the
    principal and interest.
(g) Zero coupon bond.
(h) This security, or a portion thereof, with a total market value of $1,156, is
    being used to collateralize the delayed delivery purchases indicated in note
    (a) above and open futures contracts.
(i) These securities, or a portion thereof, with a total market value of $6,618
    are being used to collateralize open futures contracts.
(j) Cost for federal income tax purposes is approximately the same.
(k) Variable rate demand notes are considered short-term obligations. Interest
    rates change periodically on specified dates. These securities are payable
    on demand and are secured by either letters of credit or other credit
    support agreements from banks. The rates listed are as of December 31, 1998.

<TABLE>
<CAPTION>
                       Acronym                             Name
                       -------                             ----
<S>                                                        <C>
</TABLE>


                                      F-15
<PAGE>   129
<TABLE>
<S>                                             <C>
                         IFRN                   Inverse Floating Rate Note
</TABLE>

   Short futures contracts open at December 31, 1998:

<TABLE>
<CAPTION>
                           Par value                             Unrealized
                          covered by            Expiration       depreciation
       Type                contracts              month          at 12/31/98
   ----------------------------------------------------------------------------
<S>                       <C>                   <C>              <C>
     Treasury Bond          $ 4,500               March             $ 20
</TABLE>


See notes to financial statements.


                        STATEMENT OF ASSETS & LIABILITIES
                                DECEMBER 31, 1998

<TABLE>
<CAPTION>
(in thousands except for per share amount)
<S>                                                    <C>         <C>
ASSETS
Investments at value (cost $119,359)                               $ 129,495
Short-term obligations                                                 1,495
                                                                   ----------
                                                                     130,990
Receivable for:
  Interest                                             $ 2,126
  Investments sold                                          72
 Variation margin on futures                                 6
Other                                                      107         2,311
                                                       --------    ----------
    Total Assets                                                     133,301

LIABILITIES
  Investments purchased                                  1,052
Accrued:
  Deferred Trustees fees                                     4
Other                                                        3
                                                       --------
    Total Liabilities                                                  1,059
                                                                   ----------
</TABLE>


                                      F-16
<PAGE>   130
<TABLE>
<S>                                                    <C>         <C>
NET ASSETS  at value for 11,509
     shares of beneficial interest outstanding                     $ 132,242
                                                                   ----------

Net asset value per share                                             $11.49
                                                                   ----------

COMPOSITION OF NET ASSETS
Capital paid in                                                    $ 127,930
Accumulated net realized loss                                         (5,804)
Net unrealized appreciation (depreciation) on:
  Investments                                                         10,136
  Open futures contracts                                                 (20)
                                                                   ----------
                                                                    $ 132,242
                                                                   ----------
</TABLE>

See notes to financial statements.


                             STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1998

<TABLE>
<CAPTION>
(in thousands)
<S>                                                    <C>         <C>
INVESTMENT INCOME
Interest                                                           $ 7,894

EXPENSES
Management fee                                         $   854
Transfer agent                                              25
Bookkeeping fee                                             37
Trustees fee                                                 4
Custodian fee                                               (a)
Audit fee                                                   29
Legal fee                                                    6
</TABLE>


                                      F-17
<PAGE>   131
<TABLE>
<S>                                                    <C>         <C>
Reports to shareholders                                     10
Other                                                       52       1,017
                                                       --------    --------
       Net Investment Income                                         6,877
                                                                   --------

NET REALIZED & UNREALIZED GAIN (LOSS) ON PORTFOLIO
 POSITIONS

Net realized gain
on:
 Investments                                             1,997
 Closed futures contracts                                  134
                                                       --------
  Net Realized Gain                                                  2,131

Change in net unrealized appreciation (depreciation)
 during the period on:
 Investments                                            (1,280)
 Open futures contracts                                     20
                                                       --------

Net Change in Unrealized Depreciation                               (1,260)
                                                                   --------
           Net Gain                                                    871
                                                                   --------
Increase in Net Assets from Operations                             $ 7,748
                                                                   --------
</TABLE>

(a) Rounds to less than one.

See notes to financial statements.


                       STATEMENT OF CHANGES IN NET ASSETS

<TABLE>
<CAPTION>
                                                            Year ended
 (in thousands)                                             December 31
                                                      -----------------------
<S>                                                   <C>           <C>
INCREASE (DECREASE) IN NET ASSETS                       1998          1997
</TABLE>


                                      F-18
<PAGE>   132
<TABLE>
<S>                                                   <C>           <C>
Operations:
Net investment income                                 $   6,877     $   7,113
Net realized gain                                         2,131         1,650
Net unrealized appreciation (depreciation)               (1,260)        4,917
                                                      ----------    ----------
    Net Increase from Operations                          7,748        13,680

Distributions:
From net investment income                               (6,984)       (7,302)
In excess of net investment income                          (25)          -
                                                      ----------    ----------
        Total Increase                                      739         6,378

NET ASSETS
Beginning of period                                     131,503       125,125
                                                      ----------    ----------
End of period (including undistributed net
  investment income of none and $107, respectively)   $ 132,242     $ 131,503
                                                      ----------    ----------

NUMBER OF FUND SHARES
Outstanding at end of period                             11,509        11,509
                                                      ----------    ----------
</TABLE>

See notes to financial statements.


                          NOTES TO FINANCIAL STATEMENTS
                                DECEMBER 31, 1998

NOTE 1. ACCOUNTING POLICIES
 ...............................................................................
ORGANIZATION: Colonial Investment Grade Municipal Trust (the Trust), is a
Massachusetts business trust, registered under the Investment Company


                                      F-19
<PAGE>   133
Act of 1940, as amended, as a diversified, closed-end management investment
company. The Trust's investment objective is to seek as high a level of
after-tax total return as is consistent with prudent risk, by pursuing current
income exempt from ordinary federal income tax and opportunities for long-term
appreciation from a portfolio primarily invested in investment grade municipal
bonds. The Trust authorized an unlimited number of shares.

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities and disclosure of
contingent assets and liabilities at the date of the financial statements and
the reported amounts of revenues and expenses during the reporting period.
Actual results could differ from those estimates. The following is a summary of
significant accounting policies consistently followed by the Trust in the
preparation of its financial statements.

SECURITY VALUATION AND TRANSACTIONS: Debt securities generally are valued by a
pricing service based upon market transactions for normal, institutional-size
trading units of similar securities. When management deems it appropriate, an
over-the-counter or exchange bid quotation is used.

Futures contracts are valued based on the difference between the last sale price
and the opening price of the contract.

Short-term obligations with a maturity of 60 days or less are valued at
amortized cost.

Portfolio positions for which market quotations are not readily available are
valued at fair value under procedures approved by the Trustees.

Security transactions are accounted for on the date the securities are
purchased, sold or mature.

Cost is determined and gains (losses) are based upon the specific identification
method for both financial statement and federal income tax purposes.


                                      F-20
<PAGE>   134
The Trust may trade securities on other than normal settlement terms. This may
increase the risk if the other party to the transaction fails to deliver and
causes the Trust to subsequently invest at less advantageous prices.

FEDERAL INCOME TAXES: Consistent with the Trust's policy to qualify as a
regulated investment company and to distribute all of its taxable income, no
federal income tax has been accrued.

INTEREST INCOME, DEBT DISCOUNT AND PREMIUM: Interest income is recorded on the
accrual basis. Original issue discount is accreted to interest income over the
life of a security with a corresponding increase in the cost basis; market
discount is not accreted. Premium is amortized against interest income with a
corresponding decrease in the cost basis.

DISTRIBUTIONS TO SHAREHOLDERS: Distributions to shareholders are recorded on the
ex-date.

The amount and character of income and gains to be distributed are determined in
accordance with income tax regulations which may differ from generally accepted
accounting principles. Reclassifications are made to the Trust's capital
accounts to reflect income and gains available for distribution (or available
capital loss carryforwards) under income tax regulations.

OTHER: The Trust has an agreement with its custodian bank under which custodian
fees were reduced by balance credits of $277 applied during the year ended
December 31, 1998. The Trust could have invested a portion of the assets
utilized in connection with the expense offset arrangements in an income
producing asset if it had not entered into such agreements.

NOTE 2.  FEES AND COMPENSATION PAID TO AFFILIATES
 ................................................................................
MANAGEMENT FEE:  Colonial Management Associates, Inc. (the Advisor)
is the investment Advisor of the Trust and furnishes accounting and other


                                      F-21
<PAGE>   135
services and office facilities for a monthly fee equal to 0.65% annually of
the Trust's average weekly net assets.

BOOKKEEPING FEE: The Advisor provides bookkeeping and pricing services for
$18,000 per year plus 0.0233% of the Trust's average net assets over $50
million.

OTHER: The Trust pays no compensation to its officers, all of whom are employees
of the Advisor.

The Trust's Trustees may participate in a deferred compensation plan which may
be terminated at any time. Obligations of the plan will be paid solely out of
the Trust's assets.

NOTE 3.  PORTFOLIO INFORMATION
 ...............................................................................
INVESTMENT ACTIVITY: During the six months ended December 31, 1998, purchases
and sales of investments, other than short-term obligations, were $31,777,388
and $30,349,809, respectively.

Unrealized appreciation (depreciation) at December 31, 1998, based on cost of
investments for both financial statement and federal income tax purposes was
approximately:

<TABLE>
<S>                                           <C>
    Gross unrealized appreciation             $12,117,000
    Gross unrealized depreciation              (1,981,000)
                                              -----------
      Net unrealized appreciation             $10,136,000
                                              -----------
</TABLE>

CAPITAL LOSS CARRYFORWARDS: At December 31, 1998, capital loss carryforwards
available (to the extent provided in regulations) to offset future realized
gains were approximately as follows:

<TABLE>
<CAPTION>
                          Year of               Capital loss
                         expiration             carryforward
                      ----------------          ------------
<S>                   <C>                       <C>
                      2002                          1,417,000
</TABLE>


                                      F-22
<PAGE>   136
<TABLE>
<S>                   <C>                          <C>
                      2003                          2,611,000
                      2004                          1,455,000
                                                   ----------
                                                   $5,483,000
                                                   ----------
</TABLE>

Expired capital loss carryforwards, if any, are recorded as a reduction of
capital paid in.

To the extent loss carryforwards are used to offset any future realized gains,
it is unlikely that such gains would be distributed since they may be taxable to
shareholders as ordinary income.

OTHER: The Trust had greater than 10% of its net assets at December 31,
1998,invested in New York.

There are certain risks arising from geographic concentration in any state.
Certain revenue or tax related events in a state may impair the ability of
certain issuers of municipal securities to pay principal and interest on their
obligations.

The Trust may focus its investments in certain industries, subjecting it to
greater risk than a fund that is more diversified.

The Trust may invest in municipal and Treasury bond futures contracts and
purchase and write options on futures. The Trust will invest in these
instruments to hedge against the effects of changes in the value of portfolio
securities due to anticipated changes in interest rates and/or market
conditions, for duration management, or when the transactions are economically
appropriate to the reduction of risk inherent in the management of the Trust and
not for trading purposes. The use of futures contracts and options involves
certain risks, which include (1) imperfect correlation between the price
movement of the instruments and the underlying securities, (2) inability to
close out positions due to different trading hours, or the temporary absence of
a liquid market, for either the instrument or the underlying securities or (3)
an inaccurate prediction by the Advisor of the future direction of interest


                                      F-23
<PAGE>   137
rates. Any of these risks may involve amounts exceeding the amount recognized in
the Trust's Statement of Assets and Liabilities at any given time.


                              FINANCIAL HIGHLIGHTS

Selected per share data, total return, ratios and supplemental data throughout
each period are as follows:

<TABLE>
<CAPTION>
                                            Year ended December 31
                                     -----------------------------------------
                                       1998            1997             1996
                                     --------        --------         --------
<S>                                  <C>             <C>              <C>
Net asset value -
   Beginning of period               $ 11.430        $ 10.870         $ 11.050
                                     --------        --------         --------
INCOME FROM INVESTMENT OPERATIONS:
Net investment income                   0.600           0.620            0.630
Net realized and
unrealized gain (loss)                  0.069           0.575           (0.193)
                                     --------        --------         --------
   Total from Investment
      Operations                        0.669           1.195            0.437
                                     --------        --------         --------
LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS:
From net investment income             (0.607)         (0.635)          (0.617)
In excess of net investment
    income                             (0.002)           -               -
                                     --------        --------         --------
Total Distributions
    Declared to Shareholders           (0.609)         (0.635)          (0.617)
                                     --------        --------         --------
</TABLE>


                                      F-24
<PAGE>   138
<TABLE>
<S>                                  <C>             <C>              <C>
Net asset value -
   End of period                     $ 11.490        $ 11.430         $ 10.870
                                     --------        --------         --------

Market price per share               $ 11.187        $ 10.560         $ 10.130
                                     --------        --------         --------
Total return - based on
    net asset value (a)                 6.23%          11.61%            4.60%
                                     --------        --------         --------
Total return - based on market
    value (b)                          11.94%          10.76%            9.06%
                                     --------        --------         --------

RATIOS TO AVERAGE NET ASSETS
Expenses (c)                            0.77%           0.83%            0.88%
Net investment income (c)               5.24%           5.63%            5.80%
Portfolio turnover                        24%             21%              20%
Net assets at end
of period (000)                      $132,242        $131,503         $125,125
</TABLE>

(a) Total return at net asset value assuming all distributions reinvested.
(b) Total return at market value assuming all distributions reinvested and
    excluding brokerage commissions.
(c) The benefits derived from custody credits and directed brokerage
    arrangements had no impact.

- ------------------------------------------------------------------
Federal income tax information (unaudited)
All of the distributions will be treated as exempt income for federal income tax
purposes.
- ------------------------------------------------------------------


                          FINANCIAL HIGHLIGHTS -- CONT.

Selected per share data, total return, ratios and supplemental data


                                      F-25
<PAGE>   139
throughout each period are as follows:

<TABLE>
<CAPTION>
                                        Year ended December 31
                                       ------------------------
                                        1995             1994
                                       -------         --------
<S>                                   <C>             <C>
Net asset value -
   Beginning of period                $  9.930         $ 11.050
                                       -------         --------
INCOME FROM INVESTMENT OPERATIONS:
Net investment income                    0.644            0.673
Net realized and
unrealized gain (loss)                   1.111           (1.121)
                                       -------         --------
   Total from Investment
      Operations                         1.755           (0.448)
                                       -------         --------
LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS:
From net investment income              (0.635)          (0.672)
                                       -------         --------
Net asset value -
   End of period                      $ 11.050         $  9.930
                                       -------         --------
Market price per share                $  9.880         $  9.250
                                       -------         --------
Total return - based on net
    asset value (a)                     18.63%            (4.08)%
                                       -------         --------
Total return - based on market
    value (b)                           13.87%            (8.12)%
                                       -------         --------

RATIOS TO AVERAGE NET ASSETS
Expenses                                 1.08% (c)        0.94%
Net investment income                    6.08% (c)        6.46%
Portfolio turnover                         37%              34%
Net assets at end
of period (000)                       $127,118         $114,260
</TABLE>

(a) Total return at net asset value assuming all distributions reinvested.
(b) Total return at market value assuming all distributions reinvested and
    excluding brokerage commissions.
(c) The benefits derived from custody credits and directed brokerage
    arrangements had no impact. Prior years' ratios are net of benefits
    received, if any.


                                      F-26
<PAGE>   140
                        REPORT OF INDEPENDENT ACCOUNTANTS

TO THE SHAREHOLDERS AND THE TRUSTEES OF COLONIAL INVESTMENT GRADE MUNICIPAL
TRUST

In our opinion, the accompanying statement of assets and liabilities, including
the investment portfolio, and the related statements of operations and of
changes in net assets and the financial highlights present fairly, in all
material respects, the financial position of Colonial Investment Grade Municipal
Trust (the "Trust") at December 31, 1998, the results of its operations, the
changes in its net assets and the financial highlights for the periods
indicated, in conformity with generally accepted accounting principles. These
financial statements and the financial highlights (hereafter referred to as
"financial statements") are the responsibility of the Trust's management; our
responsibility is to express an opinion on these financial statements based on
our audits. We conducted our audits of these financial statements in accordance
with generally accepted auditing standards which require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements, assessing the accounting principles used and significant estimates
made by management, and evaluating the overall financial statement presentation.
We believe that our audits, which included confirmation of portfolio positions
at December 31, 1998 by correspondence with the custodian and brokers, provide a
reasonable basis for the opinion expressed above.


PricewaterhouseCoopers LLP
Boston, Massachusetts
February 11, 1999





                                      F-27



<PAGE>   141

                                   APPENDIX A

                             RATINGS OF INVESTMENTS

STANDARD & POOR'S RATINGS SERVICES -- A brief description of the applicable
Standard & Poor's Ratings Services ("S&P") rating symbols and their meanings (as
published by S&P) follows:

LONG TERM DEBT

     An S&P corporate or municipal debt rating is a current assessment of the
creditworthiness of an obligor with respect to a specific obligation. This
assessment may take into consideration obligors such as guarantors, insurers, or
lessees.

     The debt rating is not a recommendation to purchase, sell, or hold a
security, inasmuch as it does not comment as to market price or suitability for
a particular investor.

     The ratings are based on current information furnished by the issuer or
obtained by S&P from other sources it considers reliable. S&P does not perform
an audit in connection with any rating and may, on occasion, rely on unaudited
financial information. The ratings may be changed, suspended, or withdrawn as a
result of changes in, or unavailability of, such information, or based on other
circumstances.

     The ratings are based, in varying degrees, on the following considerations:

          1. Likelihood of default-capacity and willingness of the obligor as to
     the timely payment of interest and repayment of principal in accordance
     with the terms of the obligation;

          2. Nature of and provisions of the obligation;

          3. Protection afforded by, and relative position of, the obligation in
     the event of bankruptcy, reorganization, or other arrangement under the
     laws of bankruptcy and other laws affecting creditors' rights.

INVESTMENT GRADE

<TABLE>
<S>  <C>
AAA  Debt rated 'AAA' has the highest rating assigned by S&P.
     Capacity to pay interest and repay principal is extremely
     strong.
AA   Debt rated 'AA' has a very strong capacity to pay interest
     and repay principal and differs from the highest rated
     issues only in small degree.
A    Debt rated 'A' has a strong capacity to pay interest and
     repay principal although it is somewhat more susceptible to
     the adverse effects of changes in circumstances and economic
     conditions than debt in higher rated categories.
BBB  Debt rated 'BBB' is regarded as having an adequate capacity
     to pay interest and repay principal. Whereas it normally
     exhibits adequate protection parameters, adverse economic
     conditions or changing circumstances are more likely to lead
     to a weakened capacity to pay interest and repay principal
     for debt in this category than in higher rated categories.
</TABLE>

SPECULATIVE GRADE RATING

     Debt rated 'BB', 'B', 'CCC', 'CC' and 'C' is regarded as having
predominantly speculative characteristics with respect to capacity to pay
interest and repay principal. 'BB' indicates the least degree of speculation and
'C' the highest. While such debt will likely have some quality and protective
characteristics, these are outweighed by major uncertainties or major exposures
to adverse conditions.

<TABLE>
<S>  <C>
BB   Debt rated 'BB' has less near-term vulnerability to default
     than other speculative issues. However, it faces major
     ongoing uncertainties or exposure to adverse business,
     financial, or economic conditions which could lead to
     inadequate capacity to meet timely interest and principal
     payments. The 'BB' rating category is also used for debt
     subordinated to senior debt that is assigned an actual or
     implied 'BBB-' rating.
</TABLE>

                                       A-1
<PAGE>   142

<TABLE>
<S>        <C>
B          Debt rated 'B' has a greater vulnerability to default but currently has the capacity to meet interest
           payments and principal repayments. Adverse business, financial, or economic conditions will likely impair
           capacity or willingness to pay interest and repay principal.
           The 'B' rating category is also used for debt subordinated to senior debt that is assigned an actual or
           implied 'BB' or 'BB-' rating.
CCC        Debt rated 'CCC' has a currently identifiable vulnerability to default, and is dependent upon favorable
           business, financial, and economic conditions to meet timely payment of interest and repayment of principal.
           In the event of adverse business, financial, or economic conditions, it is not likely to have the capacity
           to pay interest and repay principal.
           The 'CCC' rating category is also used for debt subordinated to senior debt that is assigned an actual or
           implied 'B' or 'B-' rating.
CC         The rating 'CC' typically is applied to debt subordinated to senior debt that is assigned an actual or
           implied 'CCC' debt rating.
C          The rating 'C' typically is applied to debt subordinated to senior debt which is assigned an actual or
           implied 'CCC-' debt rating. The 'C' rating may be used to cover a situation where a bankruptcy petition has
           been filed, but debt service payments are continued.
CI         The rating 'CI' is reserved for income bonds on which no interest is being paid.
D          Debt rated 'D' is in payment default. The 'D' rating category is used when interest payments or principal
           payments are not made on the date due even if the applicable grace period has not expired, unless S&P
           believes that such payments will be made during such grace period. The 'D' rating also will be used upon
           the filing of a bankruptcy petition if debt service payments are jeopardized.
</TABLE>

PLUS (+) OR MINUS (-):  The ratings from 'AA' to 'CCC' may be modified by the
addition of a plus or minus sign to show relative standing within the major
rating categories.

<TABLE>
<S>  <C>
c    The "c" subscript is used to provide additional information
     to investors that the bank may terminate its obligation to
     purchase tendered bonds if the long-term credit rating of
     the issuer is below an investment-grade level and/or the
     issuer's bonds are deemed taxable.
*    Continuance of the ratings is contingent upon S&P's receipt
     of an executed copy of the escrow agreement or closing
     documentation confirming investments and cash flows.
r    The "r" highlights derivative, hybrid, and certain other
     obligations that S&P believes may experience high volatility
     or high variability in expected returns as a result of
     noncredit risks. Examples of such obligations are securities
     with principal or interest return indexed to equities,
     commodities, or currencies; certain swaps and options; and
     interest-only and principal-only mortgage securities. The
     absence of an "r" symbol should not be taken as an
     indication that an obligation will exhibit no volatility or
     variability in total return.
</TABLE>

PROVISIONAL RATINGS:  The letter "p" indicates that the rating is provisional. A
provisional rating assumes the successful completion of the project financed by
the debt being rated and indicates that payment of debt service requirements is
largely or entirely dependent upon the successful and timely completion of the
project. This rating, however, while addressing credit quality subsequent to
completion of the project, makes no comment on the likelihood of, or the risk of
default upon failure of, such completion. The investor should exercise judgment
with respect to such likelihood and risk.

NR Indicates no rating has been requested, that there is insufficient
   information on which to base a rating, or that S&P does not rate a particular
   type of obligation as a matter of policy.

                                       A-2
<PAGE>   143

MUNICIPAL NOTES

     An S&P note rating reflects the liquidity concerns and market access risks
unique to notes. Notes due in 3 years or less will likely receive a note rating.
Notes maturing beyond 3 years will most likely receive a long-term debt rating.
The following criteria will be used in making that assessment:

     -- Amortization schedule (the larger the final maturity relative to other
        maturities, the more likely it will be treated as a note).

     -- Source of payment (the more dependent the issue is on the market for its
        refinancing, the more likely it will be treated as a note).

NOTE RATING SYMBOLS ARE AS FOLLOWS:

<TABLE>
<S>   <C>
SP-1  Very strong or strong capacity to pay principal and
      interest. Those issues determined to possess overwhelming
      safety characteristics will be given a plus (+) designation.
SP-2  Satisfactory capacity to pay principal and interest.
SP-3  Speculative capacity to pay principal and interest.
</TABLE>

A note rating is not a recommendation to purchase, sell, or hold a security
inasmuch as it does not comment as to market price or suitability for a
particular investor. The ratings are based on current information furnished to
S&P by the issuer or obtained by S&P from other sources it considers reliable.
S&P does not perform an audit in connection with any rating and may, on
occasion, rely on unaudited financial information. The ratings may be changed,
suspended, or withdrawn as a result of changes in or unavailability of such
information or based on other circumstances.

COMMERCIAL PAPER

     An S&P commercial paper rating is a current assessment of the likelihood of
timely payment of debt having an original maturity of no more than 365 days.

     Ratings are graded into several categories, ranging from "A-1" for the
highest quality obligations to "D" for the lowest. These categories are as
follows:

<TABLE>
<S>  <C>
A-1  This highest category indicates that the degree of safety
     regarding timely payment is strong. Those issues determined
     to possess extremely strong safety characteristics are
     denoted with a plus sign (+) designation.
A-2  Capacity for timely payment on issues with this designation
     is satisfactory. However, the relative degree of safety is
     not as high as for issues designated "A-l."
A-3  Issues carrying this designation have adequate capacity for
     timely payment. They are, however, more vulnerable to the
     adverse effects of changes in circumstances than obligations
     carrying the higher designations.
B    Issues rated "B" are regarded as having only speculative
     capacity for timely payment.
C    This rating is assigned to short-term debt obligations with
     a doubtful capacity for payment.
D    Debt rated "D" is in payment default. The "D" rating
     category is used when interest payments or principal
     payments are not made on the date due, even if the
     applicable grace period has not expired, unless S&P believes
     that such payments will be made during such grace period.
</TABLE>

A commercial paper rating is not a recommendation to purchase, sell, or hold a
security inasmuch as it does not comment as to market price or suitability for a
particular investor. The ratings are based on current information furnished to
S&P by the issuer or obtained by S&P from other sources it considers reliable.
S&P does not perform an audit in connection with any rating and may, on
occasion, rely on unaudited financial information. The ratings may be changed,
suspended, or withdrawn as a result of changes in or unavailability of such
information or based on other circumstances.

                                       A-3
<PAGE>   144

MOODY'S INVESTORS SERVICE, INC. -- A brief description of the applicable Moody's
Investors Service, Inc. ("Moody's") rating symbols and their meanings (as
published by Moody's) follows:

MUNICIPAL BONDS

<TABLE>
<S>    <C>
Aaa    Bonds which are rated Aaa are judged to be of the best
       quality. They carry the smallest degree of investment risk
       and are generally referred to as "gilt edge." Interest
       payments are protected by a large or by an exceptionally
       stable margin and principal is secure. While the various
       protective elements are likely to change, such changes as
       can be visualized are most unlikely to impair the
       fundamentally strong position of such issues.
Aa     Bonds which are rated Aa are judged to be of high quality by
       all standards. Together with the Aaa group they comprise
       what are generally known as high grade bonds. They are rated
       lower than the best bonds because margins of protection may
       not be as large as in Aaa securities or fluctuation of
       protective elements may be of greater amplitude or there may
       be other elements present which make the long-term risks
       appear somewhat larger than in Aaa securities.
A      Bonds which are rated A possess many favorable investment
       attributes and are to be considered as upper medium grade
       obligations. Factors giving security to principal and
       interest are considered adequate, but elements may be
       present which suggest a susceptibility to impairment
       sometime in the future.
Baa    Bonds which are rated Baa are considered as medium grade
       obligations, i.e. they are neither highly protected nor
       poorly secured. Interest payments and principal security
       appear adequate for the present but certain protective
       elements may be lacking or may be characteristically
       unreliable over any great length of time. Such bonds lack
       outstanding investment characteristics and in fact have
       speculative characteristics as well.
Ba     Bonds which are rated Ba are judged to have speculative
       elements; their future cannot be considered as well assured.
       Often the protection of interest and principal payments may
       be very moderate and thereby not well safeguarded during
       both good and bad times over the future. Uncertainty of
       position characterizes bonds in this class.
B      Bonds which are rated B generally lack characteristics of
       the desirable investment. Assurance of interest and
       principal payments or of maintenance of other terms of the
       contract over any long period of time may be small.
Caa    Bonds which are rated Caa are of poor standing. Such issues
       may be in default or there may be present elements of danger
       with respect to principal or interest.
Ca     Bonds which are rated Ca represent obligations which are
       speculative in a high degree. Such issues are often in
       default or have other marked shortcomings.
C      Bonds which are rated C are the lowest rated class of bonds
       and issues so rated can be regarded as having extremely poor
       prospects of ever attaining any real investment standing.
       BONDS FOR WHICH THE SECURITY DEPENDS UPON THE COMPLETION OF
       SOME ACT OR THE FULFILLMENT OF SOME CONDITION ARE RATED
       CONDITIONALLY. THESE ARE BONDS SECURED BY (A) EARNINGS OF
       PROJECTS UNDER CONSTRUCTION, (B) EARNINGS OF PROJECTS
       UNSEASONED IN OPERATION EXPERIENCE, (C) RENTALS WHICH BEGIN
       WHEN FACILITIES ARE COMPLETED, OR (D) PAYMENTS TO WHICH SOME
       OTHER LIMITING CONDITION ATTACHES. PARENTHETICAL RATING
       DENOTES PROBABLE CREDIT STATURE UPON COMPLETION OF
       CONSTRUCTION OR ELIMINATION OF BASIS OF CONDITION.
NOTE:  Those bonds in the Aa, A, Baa, Ba and B groups which Moody's
       believes possess the strongest investment attributes are
       designated by the symbols Aal, Al, Baal, Bal and Bl.
</TABLE>

                                       A-4
<PAGE>   145

SHORT-TERM LOANS

<TABLE>
<S>           <C>
MIG 1/VMIG 1  This designation denotes best quality. There is present
              strong protection by established cash flows, superior
              liquidity support or demonstrated broadbased access to the
              market for refinancing.
MIG 2/VMIG 2  This designation denotes high quality. Margins of protection
              are ample although not so large as in the preceding group.
MIG 3/VMIG 3  This designation denotes favorable quality. All security
              elements are accounted for but there is lacking the
              undeniable strength of the preceding grades. Liquidity and
              cash flow protection may be narrow and market access for
              refinancing is likely to be less well established.
MIG 4/VMIG 4  This designation denotes adequate quality. Protection
              commonly regarded as required of an investment security is
              present and although not distinctly or predominantly
              speculative, there is specific risk.
S.G.          This designation denotes speculative quality. Debt
              instruments in this category lack margins of protection.
</TABLE>

COMMERCIAL PAPER

     Issuers rated PRIME-1 (or related supporting institutions) have a superior
capacity for repayment of short-term promissory obligations. Prime-1 repayment
capacity will normally be evidenced by the following characteristics:

     -- Leading market positions in well established industries.

     -- High rates of return on funds employed.

     -- Conservative capitalization structures with moderate reliance on debt
and ample asset protection.

     -- Broad margins in earnings coverage of fixed financial charges and high
internal cash generation.

     -- Well established access to a range of financial markets and assured
sources of alternate liquidity.

     Issuers rated PRIME-2 (or related supporting institutions) have a strong
capacity for repayment of short-term promissory obligations. This will normally
be evidenced by many of the characteristics cited above but to a lesser degree.
Earnings trends and coverage ratios, while sound, will be more subject to
variation. Capitalization characteristics, while still appropriate, may be more
affected by external conditions. Ample alternate liquidity is maintained.

     Issuers rated PRIME-3 (or related supporting institutions) have an
acceptable capacity for repayment of short-term promissory obligations. The
effect of industry characteristics and market composition may be more
pronounced. Variability in earnings and profitability may result in changes in
the level of debt protection measurements and the requirement for relatively
high financial leverage. Adequate alternate liquidity is maintained.

     Issuers rated NOT PRIME do not fall within any of the Prime rating
categories.

                                       A-5
<PAGE>   146

                                   APPENDIX B

                               AUCTION PROCEDURES

     The following procedures will be set forth as Paragraphs 1 through 8 of
Part II of Section 12.1 of the Amended and Restated By-Laws of the Trust. The
terms not defined below are defined in the Prospectus or this Statement of
Additional Information, including the Glossary.

     1. Orders.

          (a) Prior to the Submission Deadline on each Auction Date for shares
     of a series of Municipal Preferred:

             (i) each Beneficial Owner of shares of such series may submit to
        its Broker-Dealer by telephone or otherwise information as to:

                (A) the number of Outstanding shares, if any, of such series
           held by such Beneficial Owner which such Beneficial Owners desires to
           continue to hold without regard to the Applicable Rate for shares of
           such series for the next succeeding Rate Period of such shares;

                (B) the number of Outstanding shares, if any, of such series
           held by such Beneficial Owner offers to sell if the Applicable Rate
           for shares of such series for the next succeeding Rate Period of
           shares of such series shall be less than the rate per annum specified
           by such Beneficial Owner; and/or

                (C) the number of Outstanding shares, if any, of such series
           held by such Beneficial Owners which such Beneficial Owner offers to
           sell without regard to the Applicable Rate for shares of such series
           for the next Rate Period of shares of such series;

and

             (ii) one or more Broker-Dealers, using lists of Potential
        Beneficial Owners, shall in good faith for the purpose of conducting a
        competitive Auction in a commercially reasonable manner, contact
        Potential Beneficial Owners (by telephone or otherwise), including
        Persons that are not Beneficial Owners, on such lists to determine the
        number of shares, if any, of such series which each such Potential
        Beneficial Owner offers to purchase if the Applicable Rate for shares of
        such series for the next succeeding Rate Period of shares of such series
        shall not be less than the rate per annum specified by such Potential
        Beneficial Owner.

For purposes hereof, the communication by a Beneficial Owner or Potential
Beneficial Owner to a Broker-Dealer, or by a Broker-Dealer to the Auction Agent,
of information referred to in clause (i)(a), (i)(B), (i)(C), or (ii) of this
subparagraph (a) is hereinafter referred to as an "order" and collectively as
"Orders" and each Beneficial Owner and each Potential Beneficial Owner placing
an Order with a Broker-Dealer, and such Broker-Dealer placing an Order with the
Auction Agent, is hereinafter referred to as a "Bidder" and collectively as
"Bidders"; an Order containing the information referred to in clause (i)(A) of
this subparagraph (a) is hereinafter referred to as a "Hold Order" and
collectively as "Hold Orders"; an Order containing the information referred to
in clause (i)(B) or (ii) of this subparagraph (a) is hereinafter referred to as
a "Bid" and collectively as "Bids"; and an Order containing the information
referred to in clause (i)(C) of this subparagraph (a) is hereinafter referred to
as a "Sell Order" and collectively as "Sell Orders."

          (b)(i) A Bid by a Beneficial Owner or an Existing Holder of shares of
     a series of Municipal Preferred subject to an Auction on any Auction Date
     shall constitute an irrevocable offer to sell:

                (A) the number of Outstanding shares of such series specified in
           such Bid if the Applicable Rate for shares of such series determined
           on such Auction Date shall be less than the rate specified therein;

                                       B-1
<PAGE>   147

                (B) such number or a lesser number of Outstanding shares of such
           series to be determined as set forth in paragraph 4(a)(iv) herein if
           the Applicable Rate for shares of such series determined on such
           Auction Date shall be equal to the rate specified therein; or

                (C) the number of Outstanding shares of such series specified in
           such Bid if the rate specified therein shall be higher than the
           Maximum Rate for shares of such series, or such number or a lesser
           number of Outstanding shares of such series to be determined as set
           forth in paragraph 4(b)(iii) herein if the rate specified therein
           shall be higher than the Maximum Rate for shares of such series and
           Sufficient Clearing Bids for shares of such series do not exist.

             (ii) A Sell Order by a Beneficial Owner or an Existing Holder of
        shares of a series of Municipal Preferred subject to an Auction on any
        Auction Date shall constitute an irrevocable offer to sell:

                (A) the number of Outstanding shares of such series specified in
           such Sell Order; or

                (B) such number or a lesser number of Outstanding shares of such
           series as set forth in paragraph 4(b)(iii) herein if Sufficient
           Clearing Bids for shares of such series do not exist;

provided, however, that a Broker-Dealer that is an Existing Holder with respect
to shares of a series of Municipal Preferred shall not be liable to any Person
for failing to sell such shares pursuant to a Sell Order described in the
proviso to paragraph 2(c) herein if (1) such shares were transferred by the
Beneficial Owner thereof without compliance by such Beneficial Owner or its
transferee Broker-Dealer (or other transferee person, if permitted by the Trust)
with the provisions of paragraph 7 herein or (2) such Broker-Dealer has informed
the Auction Agent pursuant to the terms of its Broker-Dealer Agreement that,
according to such Broker-Dealer's records, such Broker-Dealer believes it is not
the Existing Holder of such shares.

             (iii) A Bid by a Potential Beneficial Holder or a Potential Holder
        of shares of a series of Municipal Preferred subject to an Auction on
        any Auction Date shall constitute an irrevocable offer to purchase:

                (A) the number of Outstanding shares of such series specified in
           such Bid if the Applicable Rate for shares of such series determined
           on such Auction Date shall be higher than the rate specified therein;
           or

                (B) such number or a lesser number of Outstanding shares of such
           series as set forth in paragraph 4(a)(v) herein if the Applicable
           Rate for shares of such series determined on such Auction Date shall
           be equal to the rate specified therein.

          (c) No Order for any number of shares of Municipal Preferred other
     than whole shares shall be valid.

     2. Submission of Orders by Broker-Dealers to Auction Agent.

          (a) Each Broker-Dealer shall submit in writing to the Auction Agent
     prior to the Submission Deadline on each Auction Date all Orders for shares
     of Municipal Preferred of a series subject to an Auction on such Auction
     Date obtained by such Broker-Dealer, designating itself (unless otherwise
     permitted by the Trust) as an Existing Holder in respect of shares subject
     to Orders submitted or deemed submitted to it by Beneficial Owners and as a
     Potential Holder in respect of shares subject to Orders submitted to it by
     Potential Beneficial Owners, and shall specify with respect to each Order
     for such shares:

             (i) the name of the Bidder placing such Order (which shall be the
        Broker-Dealer unless otherwise permitted by the Trust);

             (ii) the aggregate number of shares of such series that are the
        subject of such Order;

                                       B-2
<PAGE>   148

             (iii) to the extent that such Bidder is an Existing Holder of
        shares of such series:

                (A) the number of shares, if any, of such series subject to any
           Hold Order of such Existing Holder;

                (B) the number of shares, if any, of such series subject to any
           Bid of such Existing Holder and the rate specified in such Bid; and

                (C) the number of shares, if any, of such series subject to any
           Sell Order of such Existing Holder; and

             (iv) to the extent such Bidder is a Potential Holder of shares of
        such series, the rate and number of shares of such series specified in
        such Potential Holder's Bid.

          (b) If any rate specified in any Bid contains more than three figures
     to the right of the decimal point, the Auction Agent shall round such rate
     up to the next highest one thousandth (.001) of 1%.

          (c) If an Order or Orders covering all of the Outstanding shares of
     Municipal Preferred of a series held by any Existing Holder is not
     submitted to the Auction Agent prior to the Submission Deadline, the
     Auction Agent shall deem a Hold Order to have been submitted by or on
     behalf of such Existing Holder covering the number of Outstanding shares of
     such series held by such Existing Holder and not subject to Orders
     submitted to the Auction Agent; provided, however, that if an Order or
     Orders covering all of the Outstanding shares of such series held by any
     Existing Holder is not submitted to the Auction Agent prior to the
     Submission Deadline for an Auction relating to a Special Rate Period
     consisting of more than 28 Rate Period Days, the Auction Agent shall deem a
     Sell Order to have been submitted by or on behalf of such Existing Holder
     covering the number of outstanding shares of such series held by such
     Existing Holder and not subject to Orders submitted to the Auction Agent.

          (d) If one or more Orders of an Existing Holder is submitted to the
     Auction Agent covering in the aggregate more than the number of Outstanding
     shares of Municipal Preferred of a series subject to an Auction held by
     such Existing Holder, such Orders shall be considered valid in the
     following order of priority:

             (i) all Hold Orders for shares of such series shall be considered
        valid, but only up to and including in the aggregate the number of
        Outstanding shares of such series held by such Existing Holder, and if
        the number of shares of such series subject to such Hold Orders exceeds
        the number of Outstanding shares of such series held by such Existing
        Holder, the number of shares subject to each such Hold Order shall be
        reduced pro rata to cover the number of Outstanding shares of such
        series held by such Existing Holder;

             (ii) (A) any Bid for shares of such series shall be considered
        valid up to and including the excess of the number of Outstanding shares
        of such series held by such Existing Holder over the number of shares of
        such series subject to any Hold Orders referred to in clause (i) above;

                (B) subject to subclause (A), if more than one Bid of an
           Existing Holder for shares of such series is submitted to the Auction
           Agent with the same rate and the number of Outstanding shares of such
           series subject to such Bids is greater than such excess, such Bids
           shall be considered valid up to and including the amount of such
           excess, and the number of shares of such series subject to each Bid
           with the same rate shall be reduced pro rata to cover the number of
           shares of such series equal to such excess;

                (C) subject to subclauses (A) and (B), if more than one Bid of
           an Existing Holder for shares of such series is submitted to the
           Auction Agent with different rates, such Bids shall be considered
           valid in the ascending order of their respective rates up to and
           including the amount of such excess; and

                (D) in any such event, the number, if any, of such Outstanding
           shares of such series subject to any portion of Bids considered not
           valid in whole or in part under this clause (ii)
                                       B-3
<PAGE>   149

           shall be treated as the subject of a Bid for shares of such series by
           or on behalf of a Potential Holder at the rate therein specified; and

             (iii) all Sell Orders for shares of such series shall be considered
        valid up to and including the excess of the number of Outstanding shares
        of such series held by such Existing Holder over the sum of shares of
        such series subject to valid Hold Orders referred to in clause (i) above
        and valid Bids referred to in clause (ii) above.

          (e) If more than one Bid for one or more shares of a series of
     Municipal Preferred is submitted to the Auction Agent by or on behalf of
     any Potential Holder, each such Bid submitted shall be a separate Bid with
     the rate and number of shares therein specified.

          (f) Any Order submitted by a Beneficial Owner or a Potential
     Beneficial Owner to its Broker-Dealer, or by a Broker-Dealer to the Auction
     Agent, prior to the Submission Deadline on any Auction Date, shall be
     irrevocable.

     3. Determination of Sufficient Clearing Bids, Winning Bid Rate and
Applicable Rate.

          (a) Not earlier than the Submission Deadline on each Auction Date for
     shares of a series of Municipal Preferred, the Auction Agent shall assemble
     all valid Orders submitted or deemed submitted to it by the Broker-Dealers
     in respect of shares of such series (each such Order as submitted or deemed
     submitted by a Broker-Dealer being hereinafter referred to individually as
     a "Submitted Holder Order," a "Submitted Bid" or a "Submitted Sell Order,"
     as the case may be, or as a "Submitted Order" and collectively as
     "Submitted Hold Orders," "Submitted Bids" or "Submitted Sell Orders," as
     the case may be, or as "Submitted Orders") and shall determine for such
     series:

             (i) the excess of the number of Outstanding shares of such series
        over the number of Outstanding shares of such series subject to
        Submitted Hold Orders (such excess being hereinafter referred to as the
        "Available Municipal Preferred" of such series);

             (ii) from the Submitted Orders for shares of such series whether:

                (A) the number of Outstanding shares of such series subject to
           Submitted Bids of Potential Holders specifying one or more rates
           equal to or lower than the Maximum Rate for shares of such series;

                exceeds or is equal to the sum of:

                (B) the number of Outstanding shares of such series subject to
           Submitted Bids of Existing Holders specifying one or more rates
           higher than the Maximum Rate for shares of such series; and

                (C) the number of Outstanding shares of such series subject to
           Submitted Sell Orders

                (in the event such excess or such equality exists (other than
           because the number of shares of such series in subclauses (B) and (C)
           above is zero because all of the Outstanding shares of such series
           are subject to Submitted Hold Orders), such Submitted Bids in
           subclause (A) above being hereinafter referred to collectively as
           "Sufficient Clearing Bids" for shares of such series); and

             (iii) if Sufficient Clearing Bids for shares of such series exist,
        the lowest rate specified in such Submitted Bids (the "Winning Bid Rate"
        for shares of such series) which if:

                (A) (I) each such Submitted Bid of Existing Holders specifying
           such lowest rate and (II) all other such Submitted Bids of Existing
           Holders specifying lower rates were rejected, thus entitling such
           Existing Holders to continue to hold the shares of such series that
           are subject to such Submitted Bids; and

                                       B-4
<PAGE>   150

                (B) (I) each such Submitted Bid of Potential Holders specifying
           such lowest rate and (II) all other such Submitted Bids of Potential
           Holders specifying lower rates were accepted;

would result in such Existing Holders described in subclause (A) above
continuing to hold an aggregate number of Outstanding shares of such series
which, when added to the number of Outstanding shares of such series to be
purchased by such Potential Holders described in subclause (B) above, would
equal not less than the Available Municipal Preferred of such series.

          (b) Promptly after the Auction Agent has made the determinations
     pursuant to subparagraph (a) of this paragraph 3, the Auction Agent shall
     advise the Trust of the Maximum Rate for shares of the series of Municipal
     Preferred for which an Auction is being held on the Auction Date and, based
     on such determination, the Applicable Rate for shares of such series for
     the next succeeding Rate Period thereof as follows:

             (i) if Sufficient Clearing Bids for shares of such series exist,
        that the Applicable Rate for all shares of such series for the next
        succeeding Rate Period thereof shall be equal to the Winning Bid Rate
        for shares of such series so determined;

             (ii) if Sufficient Clearing Bids for shares of such series do not
        exist (other than because all of the Outstanding shares of such series
        are subject to Submitted Hold Orders), that the Applicable Rate for all
        shares of such series for the next succeeding Rate Period thereof shall
        be equal to the Maximum Rate for shares of such series; or

             (iii) if all of the Outstanding shares of such series are subject
        to Submitted Hold Orders, that the Applicable Rate for all shares of
        such series for the next succeeding Rate Period thereof shall be as set
        forth in subparagraph (c) of this paragraph 3.

          (c) For purposes of subparagraph (b)(iii) of this paragraph 3, the
     Applicable Rate for shares of such series for the next succeeding Rate
     Period of shares of such series shall be equal to the lesser of the Kenny
     Index (if such Rate Period consists of fewer than 183 Rate Period Days) or
     the product of (A) (I) the "AA" Composite Commercial Paper Rate on such
     Auction Date for such Rate Period, if such Rate Period consists of fewer
     than 183 Rate Period Days; (II) the Treasury Bill Rate on such Auction Date
     for such Rate Period, if such Rate Period consists of more than 182 but
     fewer than 365 Rate Period Days; or (III) the Treasury Note Rate on such
     Auction Date for such Rate Period, if such Rate Period is more than 364
     Rate Period Days (the rate described in the foregoing clause (A)(I), (II)
     or (III), as applicable, being referred to herein as the "Benchmark Rate")
     and (B) 1 minus the maximum marginal regular Federal individual income tax
     rate applicable to ordinary income or the maximum marginal regular Federal
     corporate income tax rate applicable to ordinary income, whichever is
     greater; provided, however, that if the Trust has notified the Auction
     Agent of its intent to allocate to shares of such series in such Rate
     Period any net capital gains or other income taxable for Federal income tax
     purposes ("Taxable Income"), the Applicable Rate for shares of such series
     for such Rate Period will be (i) if the Taxable Yield Rate (as defined
     below) is greater than the Benchmark Rate, then the Benchmark Rate, or (ii)
     if the Taxable Yield Rate is less than or equal to the Benchmark Rate, then
     the rate equal to the sum of (x) the lesser of the Kenny Index (if such
     Rate Period consists of fewer than 183 Rate Period Days) or the product of
     the Benchmark Rate multiplied by the factor set forth in the preceding
     clause (B) and (y) the product of the maximum marginal regular Federal
     individual income tax rate applicable to ordinary income or the maximum
     marginal regular Federal corporate income tax applicable to ordinary
     income, whichever is greater, multiplied by the Taxable Yield Rate. For
     purposes of the foregoing, Taxable Yield Rate means the rate determined by
     (a) dividing the amount of Taxable Income available for distribution per
     such share of Municipal Preferred by the number of days in the Dividend
     Period in respect of which such Taxable Income is contemplated to be
     distributed, (b) multiplying the amount determined in (a) above by 365 (in
     the case of a Dividend Period of 7 Rate Period Days) or 360 (in the case of
     any other Dividend Period), and (c) dividing the amount determined in (b)
     above by $25,000.
                                       B-5
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     4. Acceptance and Rejection of Submitted Bids and Submitted Sell Orders and
Allocation of Shares. Existing Holders shall continue to hold the shares of
Municipal Preferred that are subject to Submitted Hold Orders, and, based on the
determinations made pursuant to paragraph 3(a) herein, the Submitted Bids and
Submitted Sell Orders shall be accepted or rejected by the Auction Agent and the
Auction Agent shall take such other action as set forth below:

          (a) If Sufficient Clearing Bids for shares of a series of Municipal
     Preferred have been made, all Submitted Sell Orders with respect to shares
     of such series shall be accepted and, subject to the provisions of
     subparagraphs (d) and (e) of this paragraph 4, Submitted Bids with respect
     to shares of such series shall be accepted or rejected as follows in the
     following order of priority and all other Submitted Bids with respect to
     shares of such series shall be rejected:

             (i) Existing Holders' Submitted Bids for shares of such series
        specifying any rate that is higher than the Winning Bid Rate for shares
        of such series shall be accepted, thus requiring each such Existing
        Holder to sell the shares of Municipal Preferred subject to such
        Submitted Bids;

             (ii) Existing Holders' Submitted Bids for shares of such series
        specifying any rate that is lower than the Winning Bid Rate for shares
        of such series shall be rejected, thus entitling each such Existing
        Holder to continue to hold the shares of Municipal Preferred subject to
        such Submitted Bids;

             (iii) Potential Holders' Submitted Bids for shares of such series
        specifying any rate that is lower than the Winning Bid Rate for shares
        of such series shall be accepted;

             (iv) each Existing Holders' Submitted Bid for shares of such series
        specifying a rate that is equal to the Winning Bid Rate for shares of
        such series shall be rejected, thus entitling such Existing Holder to
        continue to hold the share of Municipal Preferred subject to such
        Submitted Bid, unless the number of Outstanding shares of Municipal
        Preferred subject to all such Submitted Bids shall be greater than the
        number of shares of Municipal Preferred ("remaining shares") in the
        excess of the Available Municipal Preferred of such series over the
        number of shares of Municipal Preferred subject to Submitted Bids
        described in clauses (ii) and (iii) of this paragraph (a), in which
        event such Submitted Bid of such Existing Holder shall be rejected in
        part, and such Existing Holder shall be entitled to continue to hold
        shares of Municipal Preferred subject to such Submitted Bid, but only in
        an amount equal to the number of shares of Municipal Preferred of such
        series obtained by multiplying the number of remaining shares by a
        fraction, the numerator of which shall be the number of Outstanding
        shares of Municipal Preferred held by such Existing Holder subject to
        such Submitted Bid and the denominator of which shall be the aggregate
        number of Outstanding shares of Municipal Preferred subject to such
        Submitted Bids may be all such Existing Holders that specified a rate
        equal to the Winning Bid Rate for shares of such series; and

             (v) each Potential Holder's Submitted Bid for shares of such series
        specifying a rate that is equal to the Winning Bid Rate of shares of
        such series shall be accepted but only in an amount equal to the number
        of shares of such series obtained by multiplying the number of shares in
        the excess of the Available Municipal Preferred of such series over the
        number of shares of Municipal Preferred subject to Submitted Bids
        described in clauses (ii) through (iv) of this subparagraph (a) by a
        fraction, the numerator of which shall be the number of Outstanding
        shares Municipal Preferred subject to such Submitted Bids made by all
        such Potential Holders that specified a rate equal to the Winning Bid
        Rate for shares of such series.

          (b) If Sufficient Clearing Bids for shares of a series of Municipal
     Preferred have not been made (other than because all of the Outstanding
     shares of such series are subject to Submitted Hold Orders), subject to the
     provisions of subparagraph (d) of this paragraph 4, Submitted Orders for

                                       B-6
<PAGE>   152

     shares of such series shall be accepted or rejected as follows in the
     following orders of priority and all other Submitted Bids for shares of
     such series shall be rejected:

             (i) Existing Holders' Submitted Bids for shares of such series
        specifying any rate that is equal to or lower than the Maximum Rate for
        shares of such series shall be rejected, thus entitling such Existing
        Holders to continue to hold the shares of Municipal Preferred subject to
        such Submitted Bids;

             (ii) Potential Holders' Submitted Bids for shares of such series
        specifying any rate that is equal to or lower than the Maximum Rate for
        shares of such series shall be accepted; and

             (iii) Each Existing Holder's Submitted Bid for shares of such
        series specifying any rate that is higher than the Maximum Rate for
        shares of such series and the Submitted Sell Orders for shares of such
        series of each Existing Holder shall be accepted, thus entitling each
        Existing Holder that submitted or on whose behalf was submitted any such
        Submitted Bid or Submitted Sell Order to sell the shares of such series
        subject to such Submitted Bid or Submitted Sell Order, but in both cases
        only in an amount equal to the number of shares of such series obtained
        by multiplying the number of shares of such series subject to Submitted
        Bids described in clause (ii) of this subparagraph (b) by a fraction,
        the numerator of which shall be the number of Outstanding shares of such
        series held by such Existing Holder subject to such Submitted Bid or
        Submitted Sell Order and the denominator of which shall be the aggregate
        number of Outstanding shares of such series subject to all such
        Submitted Bids and Submitted Sell Orders.

          (c) If all of the Outstanding shares of a series of Municipal
     Preferred are subject to Submitted Hold Orders, all Submitted Bids for
     shares of such series shall be rejected.

          (d) If, as a result of the procedures described in clause (iv) or (v)
     of subparagraph (a) or clause (iii) of subparagraph (b) of this paragraph
     4, any Existing Holder would be entitled or required to sell, or any
     Potential Holder would be entitled or required to purchase, a fraction of a
     share of a series of Municipal Preferred on any Auction Date, the Auction
     Agent shall, in such manner as it shall determine in its sole discretion,
     round up or down the number of shares of Municipal Preferred of such series
     to be purchased or sold by any Existing Holder or Potential Holder on such
     Auction Date as a result of such procedures so that the number of shares so
     purchased or sold by each Existing Holder or Potential Holder on such
     Auction Date shall be whole shares of Municipal Preferred.

          (e) If, as a result of the procedures described in clause (v) of
     subparagraph (a) of this paragraph 4, any Potential Holder would be
     entitled or required to purchase less than a whole share of series of
     Municipal Preferred on any Auction Date, the Auction Agent shall, in such
     manner as it shall determine in its sole discretion, allocate shares of
     Municipal Preferred of such series for purchase among Potential Holders so
     that only whole shares of Municipal Preferred of such series are purchased
     on such Auction Date as a result of such procedures by any Potential
     Holder, even if such allocation results in one or more Potential Holders
     not purchasing shares of Municipal Preferred of such series on such Auction
     Date.

          (f) Based on the results of each Auction for shares of a series of
     Municipal Preferred, the Auction Agent shall determine the aggregate of
     shares of such series to be purchased and the aggregate number of shares of
     such series to be sold by Potential Holders and Existing Holders and, with
     respect to each Potential Holder and Existing Holder, to the extent that
     such aggregate number of shares to be purchased and such aggregate number
     of shares to be sold differ, determine to which other Potential Holder(s)
     or Existing Holder(s) they shall deliver, or from which other Potential
     Holder(s) or Existing Holder(s) they shall receive, as the case may be,
     shares of Municipal Preferred of such series. Notwithstanding any provision
     of the Auction procedures or the Settlement Procedures to the contrary, in
     the event an Existing Holder or Beneficial Owner of shares of a series of
     Municipal Preferred with respect to whom a Broker-Dealer submitted a Bid to
     the Auction Agent for such shares that was accepted in whole or in part, or
     submitted or is deemed to have submitted a Sell

                                       B-7
<PAGE>   153

     Order for such shares that was accepted in whole or in part, fails to
     instruct its Agent Member to deliver such shares against payment therefor,
     partial deliveries of shares of Municipal Preferred that have been made in
     respect of Potential Holders' or Potential Beneficial Owners' Submitted
     Bids for shares of such series that have been accepted in whole or in part
     shall constitute good delivery to such Potential Holders and Potential
     Beneficial Owners.

          (g) Neither the Trust nor the Auction Agent nor any affiliate of
     either shall have any responsibility or liability with respect to the
     failure of an Existing Holder, a Potential Holder, a Benefit Owner, a
     Potential Beneficial Owner or its respective Agent Member to deliver shares
     of Municipal Preferred of any series or to pay for shares of Municipal
     Preferred of any series sold or purchased pursuant to the Auction
     Procedures or otherwise.

     5. Notification of Allocations.  Whenever the Trust intends to include any
net capital gain or other income taxable for Federal income tax purposes in any
dividend on shares of Municipal Preferred, the Trust shall, in the case of a
Minimum Rate Period or a Special Rate Period of 28 Rate Period Days or fewer,
and may, in the case of any other Special Rate Period, notify the Auction Agent
of the amount to be so included not later than the Dividend Payment Date next
preceding the Auction Date on which the Applicable Rate for such dividend is to
be established. Whenever the Auction Agent receives such notice from the Trust,
it will be required in turn to notify each Broker-Dealer, who, on or prior to
such Auction Date, in accordance with its Broker-Dealer Agreement, will be
required to notify its Beneficial Owners and Potential Beneficial Owners of
shares of Municipal Preferred believed by it to be interested in submitting an
Order in the Auction to be held on such Auction Date.

     6. Auction Agent.  For so long as any shares of Municipal Preferred are
outstanding, the Auction Agent, duly appointed by the Trust to so act, shall be
in each case a commercial bank, trust company or other financial institution
independent of the Trust and its affiliates (which however, may engage or have
engaged in business transactions with the Trust or its affiliates) and at no
time shall the Trust or any of its affiliates act as the Auction Agent in
connection with the Auction Procedures. If the Auction Agent resigns or for any
reason its appointment is terminated during any period that any shares of
Municipal Preferred are outstanding, the Board of Trustees shall use its best
efforts promptly thereafter to appoint another qualified commercial bank, trust
company or financial institution to act as the Auction Agent. The Auction
Agent's registry of Existing Holders of shares of a series of Municipal
Preferred shall be conclusive and binding on the Broker-Dealers. A Broker-Dealer
may inquire of the Auction Agent between 3:00 p.m. on the Business Day preceding
an Auction for shares of a series of Municipal Preferred and 9:30 a.m. on the
Auction Date for such Auction to ascertain the number of shares of a series in
respect of which the Auction Agent has determined such Broker-Dealer to be an
Existing Holder. If such Broker-Dealer believes it is the Existing Holder of
fewer shares of such series than specified by the Auction Agent in response to
such Broker-Dealer's inquiry, such Broker-Dealer may so inform the Auction Agent
of that belief. Such Broker-Dealer shall not, in its capacity as Existing Holder
of shares of such series, submit Orders in such Auction in respect of shares of
such series covering in the aggregate more than the number of shares of such
series specified by the Auction Agent in response to such Broker-Dealer's
inquiry.

     7. Transfer of Shares of Municipal Preferred.  Unless otherwise permitted
by the Trust, a Beneficial Owner or an Existing Holder may sell, transfer or
otherwise dispose of shares of Municipal Preferred only in whole shares and only
pursuant to a Bid or Sell Order placed with the Auction Agent in accordance with
the procedures described herein or to a Broker-Dealer; provided, however, that
(a) a sale, transfer or other disposition of shares of Municipal Preferred from
a customer of a Broker-Dealer who is listed on the records of that Broker-Dealer
as the holder of such shares to that Broker-Dealer or another customer of that
Broker-Dealer shall not be deemed to be a sale, transfer or other disposition
for purposes of this paragraph 7 if such Broker-Dealer remains the Existing
Holder of the shares so sold, transferred or disposed of immediately after such
sale, transfer or disposition and (b) in the case of all transfers other than
pursuant to Auctions, the Broker-Dealer (or other Person, if permitted by the
Trust) to whom such transfer is made shall advise the Auction Agent of such
transfer.

                                       B-8
<PAGE>   154

     8. Global Certificate.  Prior to the commencement of a Voting Period, (i)
all of the shares of a series of Municipal Preferred outstanding from time to
time shall be represented by one global certificate registered in the name of
the Securities Depository or its nominee and (ii) no registration of transfer of
shares of a series of Municipal Preferred shall be made on the books of the
Trust to any Person other than the Securities Depository or its nominee.

                                       B-9
<PAGE>   155

                                   APPENDIX C

                             SETTLEMENT PROCEDURES

     Capitalized terms used herein have the respective meanings specified in the
Statement of Additional Information, including the Glossary.

     (a) On each Auction Date for shares of Municipal Preferred, the Auction
Agent shall notify by telephone the Broker-Dealers that participated in the
Auction held on such Auction Date and submitted an Order to the Auction Agent as
or on behalf of an Existing Holder or Potential Holder of:

          (i) the Applicable Rate fixed for the next Rate Period;

          (ii) whether Sufficient Clearing Bids existed for the determination of
     the Applicable Rate;

          (iii) if such Broker-Dealer submitted a Bid or a Sell Order to the
     Auction Agent as or on behalf of an Existing Holder, whether such Bid or
     Sell Order was accepted or rejected, in whole or in part, and the number of
     shares, if any, of Municipal Preferred then outstanding to be sold by such
     Existing Holder;

          (iv) if such Broker-Dealer submitted a Bid to the Auction Agent as or
     on behalf of a Potential Holder, whether such Bid was accepted or rejected,
     in whole or in part, and the number of shares, if any, of Municipal
     Preferred to be purchased by such Potential Holder;

          (v) if the aggregate number of shares of Municipal Preferred to be
     sold by all Existing Holders with respect to whom such Broker-Dealer
     submitted Bids or Sell Orders to the Auction Agent is different than the
     aggregate number of shares of Municipal Preferred to be purchased by all
     Potential Holders with respect to whom such Broker-Dealer submitted Bids to
     the Auction Agent, the name or names of one or more other Broker-Dealers
     (and the Agent Member, if any, of each such other Broker-Dealer) and the
     number of shares of Municipal Preferred to be (x) purchased from one or
     more Existing Holders with respect to whom such other Broker-Dealers
     submitted Bids or Sell Orders to the Auction Agent, or (y) sold to one or
     more Potential Holders with respect to whom such other Broker-Dealers
     submitted Bids to the Auction Agent; and

          (vi) the scheduled Auction Date of the next succeeding Auction for
     shares of Municipal Preferred.

     (b) On each Auction Date for shares of Municipal Preferred, each
Broker-Dealer that submitted an Order to the Auction Agent as or on behalf of
any Existing Holder or Potential Holder shall:

          (i) advise each Existing Holder and Potential Holder (and each
     Beneficial Owner and Potential Beneficial Owner) with respect to whom such
     Broker-Dealer submitted a Bid or Sell Order to the Auction Agent whether
     such Bid or Sell Order was accepted or rejected, in whole or in part;

          (ii) instruct each Potential Holder (and each Potential Beneficial
     Owner) with respect to whom such Broker-Dealer submitted a Bid to the
     Auction Agent that was accepted, in whole or in part, to instruct such
     Bidder's Agent Member to pay to such Broker-Dealer (or its Agent Member)
     through the Securities Depository the amount necessary to purchase the
     number of shares of Municipal Preferred to be purchased pursuant to such
     Bid against receipt of such shares;

          (iii) instruct each Existing Holder (and each Beneficial Owner) with
     respect to whom such Broker-Dealer submitted a Bid to the Auction Agent
     that was accepted, in whole or in part, or a Sell Order that was accepted,
     in whole or in part, to instruct such Bidder's Agent Member to deliver to
     such Broker-Dealer (or its Agent Member) through the Securities Depository
     the number of shares of Municipal Preferred to be sold pursuant to such Bid
     or Sell Order against payment therefor;

          (iv) advise each Existing Holder (and each Beneficial Owner) with
     respect to whom such Broker-Dealer submitted an Order to the Auction Agent
     and each Potential Holder (and each Potential Beneficial Owner) with
     respect to whom such Broker-Dealer submitted a Bid to the Auction Agent of
     the Applicable Rate for the next succeeding Rate Period;
                                       C-1
<PAGE>   156

          (v) advise each Existing Holder (and each Beneficial Owner) with
     respect to whom such Broker-Dealer submitted an Order to the Auction Agent
     of the Auction Date of the next succeeding Auction; and

          (vi) advise each Potential Holder (and each Potential Beneficial
     Owner) with respect to whom such Broker-Dealer submitted a Bid to the
     Auction Agent that was accepted, in whole or in part, of the Auction Date
     of the next succeeding Auction for Municipal Preferred.

     (c) On the basis of the information provided to it pursuant to paragraph
(a) above, each Broker-Dealer that submitted a Bid or Sell Order to the Auction
Agent for any shares of Municipal Preferred shall allocate any funds received by
it (or its Agent Member) in respect of such shares pursuant to paragraph (b)(ii)
above and any shares of Municipal Preferred received by it (or its Agent Member)
pursuant to paragraph (b)(iii) above among the Potential Holders and Potential
Beneficial Owners, if any, with respect to whom such Broker-Dealer submitted
Bids to the Auction Agent for such shares, the Existing Holders and Beneficial
Owners, if any, with respect to whom such Broker-Dealer submitted Bids or Sell
Orders to the Auction Agent for such shares, and any Broker-Dealers identified
to it by the Auction Agent pursuant to paragraph (a)(v) above.

     (d) On the Business Day after the Auction Date, the Securities Depository
shall execute the transactions described above, debiting and crediting the
accounts of the respective Agent Members as necessary to effect the purchases
and sales of shares of Municipal Preferred as determined in the Auction for
shares of Municipal Preferred.

                                       C-2
<PAGE>   157

                                   APPENDIX D

                 RATING AGENCY FUTURES AND OPTIONS RESTRICTIONS

     The following restrictions will be set forth in Paragraph 10(a) of Part I
of Section 12.1 of the Amended and Restated By-Laws (the "By-Laws") of the
Trust. The terms not defined below are defined in the Prospectus, the Statement
of Additional Information, including the Glossary, or the By-Laws, filed as an
exhibit to the Registration Statement of the Trust. Reference is made to the
By-Laws for the full text of the rating agency restrictions on futures and
options transactions and certain other actions or investments by the Trust.

     (a) For so long as any shares of Municipal Preferred are rated by Standard
& Poor's or Moody's, the Trust will not purchase or sell futures contracts,
write, purchase or sell options on futures contracts or write put options
(except covered put options) or call options (except covered call options) on
portfolio securities unless it receives written confirmation from Standard &
Poor's or Moody's, or both, as the case may be, that engaging in such
transactions will not impair the ratings then assigned to the Municipal
Preferred by Standard & Poor's or Moody's, or both, except that the Trust may
purchase or sell futures contracts based on the Bond Buyer Municipal Bond Index
(the "Municipal Index") or United States Treasury Bonds or Notes ("Treasury
Bonds") and write, purchase or sell put and call options on such contracts
(collectively, "Hedging Transactions"), subject to the following limitations:

          (i) the Trust will not engage in any Hedging Transaction based on the
     Municipal Index (other than transactions which terminate a futures contract
     or option held by the Trust by the Trust's taking an opposite position
     thereto ("Closing Transactions")), which would cause the Trust at the time
     of such transaction to own or have sold the least of (i) more than 1,000
     outstanding futures contracts based on the Municipal Index, (ii)
     outstanding futures contracts based on the Municipal Index exceeding in
     number 25% of the quotient of the Market Value of the Trust's total assets
     divided by $1,000 or (iii) outstanding futures contracts based on the
     Municipal Index exceeding in number 10% of the average number of daily
     outstanding futures contracts based on the Municipal Index in the 30 days
     preceding the time of effecting such transaction as reported by The Wall
     Street Journal.

          (ii) the Trust will not engage in any Hedging Transaction based on
     Treasury Bonds (other than Closing Transactions) which would cause the
     Trust at the time of such transaction to own or have sold the lesser of (A)
     outstanding futures contracts based on Treasury Bonds exceeding in number
     50% of the quotient of the Market Value of the Trust's total assets divided
     by $100,000 ($200,000 in the case of the two-year United States Treasury
     Note) or (B) outstanding futures contracts based on Treasury Bonds
     exceeding in number 10% of the average number of daily traded futures
     contracts based on Treasury Bonds in the 30 days preceding the time of
     effecting such transaction as reported by The Wall Street Journal;

          (iii) the Trust will engage in Closing Transactions to close out any
     outstanding futures contract which the Trust owns or has sold or any
     outstanding option thereon owned by the Trust in the event (A) the Trust
     does not have Standard & Poor's Eligible Assets or Moody's Eligible Assets,
     as the case may be, with an aggregate Discounted Value equal to or greater
     than the Municipal Preferred Basic Maintenance Amount on two consecutive
     Valuation Dates and (B) the Trust is required to pay Variation Margin on
     the second such Valuation Date;

          (iv) the Trust will engage in a Closing Transaction to close out any
     outstanding futures contract or option thereon in the month prior to the
     delivery month under the terms of such futures contract or option thereon
     unless the Trust holds the securities deliverable under such terms; and

          (v) when the Trust writes a futures contract or option thereon, it
     will either maintain an amount of cash, cash equivalents or high grade
     (rated A or better by Standard & Poor's or Moody's, as the case may be),
     fixed-income securities in a segregated account with the Trust's custodian,
     so that the amount so segregated plus the amount of Initial Margin and
     Variation Margin held in the account of or on behalf of the Trust's broker
     with respect to such futures contract or option equals the Market Value of
     the futures contract or option, or, in the event the Trust writes a futures
     contract or option
                                       D-1
<PAGE>   158

     thereon which requires delivery of an underlying security, it shall hold
     such underlying security in its portfolio.

     For purposes of determining whether the Trust has Standard & Poor's
Eligible Assets or Moody's Eligible Assets, as the case may be, with a
Discounted Value that equals or exceeds the Municipal Preferred Basic
Maintenance Amount, the Discounted Value of cash or securities held for the
payment of Initial Margin or Variation Margin shall be zero and the aggregate
Discounted Value of Standard & Poor's Eligible Assets or Moody's Eligible
Assets, as the case may be, shall be reduced by an amount equal to (I) 30% of
the aggregate settlement value, as marked to market, of any outstanding futures
contracts based on the Municipal Index which are owned by the Trust plus (II)
25% of the aggregate settlement value, as marked to market, of any outstanding
futures contracts based on Treasury Bonds which contracts are owned by the
Trust.

                                       D-2
<PAGE>   159
PART C

                               OTHER INFORMATION

Item 24. Financial Statements and Exhibits

     (1)  Financial Statements:

               Included in Part A

               Fee Table
               Financial Highlights


               Included in Part B

               Included in Part B are the financial statements contained in the
               Registrant's Annual Report dated December 31, 1998 (which were
               previously filed electronically pursuant to Section 30(b)(2) of
               the Investment Company Act of 1940 - Accession Number:
               0000950156-99-000212):

               The Financial Statements contained in Part B are as follows:

               Investment portfolio, December 31, 1998

               Statement of assets and liabilities, December 31, 1998

               Statement of operations, December 31, 1998

               Statement of changes in net assets, Years ended December 31, 1997
               & 1998

               Notes to Financial Statements

               Financial Highlights

               Report of Independent Accountants

     (2)  Exhibits

          (a)(1)    Agreement and Declaration of Trust(1)

          (a)(2)    Amendment No. 1 to Agreement and Declaration of Trust(2)
          (b)(1)    By-Laws, as amended (2)
          (b)(2)    Form of Amended and Restated By-Laws

          (c)       Not applicable

          (d)(1)    Portions of the Agreement and Declaration of Trust, as
                      amended, included as Exhibit (a)(1) and (a)(2), and the
                      Form of Amended and Restated By-Laws of the Registrant,
                      included as Exhibit (b)(2) (see Article III, Sections 1,
                      2, 4 and 5; Article V; Article VIII, Section 4; and
                      Article IX, Sections 4 and 7 of the Agreement and
                      Declaration of Trust, as amended, and Sections 2-3, 4(c),
                      5 and 9-12 of Part I of Section 12.1 and Sections 1-5 and
                      7 of Part II of Section 12.1 of the Form of Amended and
                      Restated By-Laws.


          (d)(2)    Form of specimen certificate for the Municipal Auction Rate
                      Cumulative Preferred Shares

          (e)       Dividend Reinvestment Plan(1)
          (f)       Not applicable

          (g)       Management Agreement with Colonial Management Associates,
                      Inc.(2)


          (h)       Form of Underwriting Agreement

          (i)       Not applicable
          (j)(1)    Global Custody Agreement with The Chase Manhattan Bank
                      (incorporated herein by reference to Exhibit 8. to
                      Post-Effective Amendment No. 13 to the


                                      C-1
<PAGE>   160


                     Registration Statement of Liberty Funds Trust VI (formerly
                     known as Colonial Trust VI), Registration Nos. 33-45117
                     and 811-6529, filed with the Commission on or about
                     October 24, 1997)
          (j)(2)    Amendment 4 to Appendix A of Global Custody Agreement
                     (incorporated herein by reference to Exhibit (g)(2) to the
                     Registration Statement of Liberty Funds Trust I (formerly
                     known as Colonial Trust I), Registration Nos. 2-41251 and
                     811-2214 filed with the Commission on May 27, 1999)

          (k)(1)    Form of Auction Agency Agreement
          (k)(2)    Form of Broker-Dealer Agreement

          (k)(3)    Agreement for Stock Transfer Services between the Registrant
                     and The First National Bank of Boston(1)
          (k)(4)    Service Contract with Colonial Management Associates, Inc.
                     (1)
          (k)(5)    Amendment to Service Contract with Colonial Management
                     Associates, Inc.(1)

          (k)(6)    Agreement for Stock Transfer Services between Colonial
                     Investment Grade Municipal Trust and BankBoston, N.A.(2)
          (l)(1)    Opinion and Consent of Ropes & Gray, counsel to Registrant

          (m)       Not applicable
          (n)       Consent of independent accountants
          (o)       Not applicable
          (p)       Not applicable
          (q)       Not applicable

A copy of the Power of Attorney for each of Robert J. Birnbaum, Tom Bleasdale,
John Carberry, Lora S. Collins, James E. Grinnell, Richard W. Lowry, Salvatore
Macera, William E. Mayer, James L. Moody, Jr., John J. Neuhauser, Robert L.
Sullivan and Anne-Lee Verville is incorporated herein by reference to
Post-Effective Amendment No. 50 to the Registration Statement of Colonial Trust
IV, Registration Nos. 2-62492 and 811-2865, filed with the Commission on or
about November 6, 1998.

- ----------------------------------
(1)  Incorporated by reference to the Registration Statement filed with the
     Commission via EDGAR on or about June 18, 1999.

(2)  Incorporated by reference to the Registration Statement filed with the
     Commission via EDGAR on or about August 18, 1999.


Item 25.        Marketing Arrangements.
                See Sections 5(l), 5(m) and 6(s) of Exhibit (h) of Item 24(2) of
                this Registration Statement.


Item 26.        Other Expenses of Issuance and Distribution.
                The following table sets forth the expenses to be incurred in
                connection with the Offer described in this Registration
                Statement:

               Registration fees............................    $ 16,680
               Printing.....................................    $ 20,000
               Accounting fees and expenses.................    $  7,500
               Legal fees and expenses......................    $ 80,000
               Miscellaneous................................    $ 15,000
                                                                --------
                    Total                                       $139,180(*)
                                                                ========
(*)  Estimated

Item 27.        Persons Controlled by or under Common Control with Registrant.

                None.

Item 28.        Number of Holders of Securities

<TABLE>
<CAPTION>
                                                     Number of Record Holders
                Title of Class                       as of May 31, 1999
                --------------                       ------------------------
<S>                                                  <C>
                Shares of Beneficial Interest               1,648
                Municipal Auction Rate Cumulative
                 Preferred Shares                             -0-
</TABLE>

Item 29.        Indemnification.

                The Agreement and Declaration of Trust, as amended, filed as
                Exhibit (a)(1) and (a)(2) to this Registration Statement,
                provides for indemnification to each of the Registrant's
                Trustees and officers against all liabilities and expenses
                incurred in acting

                                      C-2
<PAGE>   161
                as Trustee or officer, except in the case of wilful misfeasance,
                bad faith, gross negligence or reckless disregard of the duties
                involved in the conduct of such Trustees and officers.

                Insofar as indemnification for liability arising under the
                Securities Act of 1933 may be permitted to trustees, officers
                and controlling persons of the Registrant pursuant to the
                foregoing provisions, or otherwise, the Registrant has been
                advised that in the opinion of the Securities and Exchange
                Commission such indemnification is against public policy as
                expressed in the Act and is, therefore, unenforceable. In the
                event that a claim for indemnification against such liabilities
                (other than the payment by the Registrant of expenses incurred
                or paid by a trustee, officer or controlling person of the
                Registrant in the successful defense of any action, suit or
                proceeding) is asserted by such trustee, officer or controlling
                person in connection with the securities being registered, the
                Registrant will, unless in the opinion of its counsel the matter
                has been settled by controlling precedent, submit to a court of
                appropriate jurisdiction the question whether such
                indemnification by it is against public policy as expressed in
                the Act and will be governed by the final adjudication of such
                issue.

                The Registrant, Colonial Management Associates, Inc. and their
                respective trustees, directors and officers are insured by a
                directors and officers/errors and omissions liability policy.

Item 30.        Business and Other Connections of Investment Adviser. The
                description of the business of Colonial Management Associates,
                Inc., the Registrant's Investment Adviser, is set forth under
                the caption "The Advisor" in the Prospectus forming part of this
                Registration Statement. The following sets forth business and
                other connections of each director and officer of Colonial
                Management Associates, Inc.


Registrant's investment adviser, Colonial Management Associates, Inc.
("Colonial"), is registered as an investment adviser under the Investment
Advisers Act of 1940 (1940 Act). Colonial Advisory Services, Inc. (CASI), an
affiliate of Colonial, is also registered as an investment adviser under the
1940 Act. As of the end of the fiscal year, December 31, 1998, CASI had four
institutional, corporate or other accounts under management or supervision, the
market value of which was approximately $227 million. As of the end of the
fiscal year, December 31, 1998, Colonial was the investment adviser, sub-adviser
and/or administrator to 57 mutual funds, including funds sub-advised by
Colonial, the market value of which investment companies was approximately
$18,950.90 million.

The following sets forth the business and other connections of each director and
officer of Colonial Management Associates, Inc.:

<TABLE>
<CAPTION>

(1)                       (2)                       (3)                            (4)
Name and principal
business
addresses*            Affiliation
of officers and       with            Period is through 05/31/99.  Other
directors of          investment      business, profession, vocation or
investment adviser    adviser         employment connection                Affiliation
- ------------------    ----------      --------------------------------     -----------
<S>                   <C>              <C>                                  <C>
Allard, Laurie        V.P.

Archer, Joseph A.     V.P.


Ballou, William J.    V.P.,           Liberty Trusts I through IX          Asst. Sec.
                      Asst.           Colonial High Income
                      Sec.,              Municipal Trust                   Asst. Sec.
                      Counsel         Colonial InterMarket Income
                                         Trust I                           Asst. Sec.
                                      Colonial Intermediate High
</TABLE>


                                      C-3
<PAGE>   162
<TABLE>
<CAPTION>
<S>                  <C>              <C>                                  <C>

                                         Income Fund                       Asst. Sec.
                                      Colonial Investment Grade
                                         Municipal Trust                   Asst. Sec.
                                      Colonial Municipal Income
                                         Trust                             Asst. Sec.
                                      AlphaTrade Inc.                      Asst. Clerk
                                      Liberty Funds Distributor,
                                         Inc.                              Asst. Clerk
                                      Liberty Financial Advisers,
                                         Inc.                              Asst. Sec.
                                      Liberty Funds Group LLC              Asst. Sec.
                                      Liberty Variable Investment
                                         Trust                             Asst. Sec.
                                      Liberty All-Star Equity Fund         Asst. Sec.
                                      Liberty All-Star Growth Fund,
                                         Inc.                              Asst. Sec.

Barron, Suzan M.      V.P.,           Liberty Trusts I through IX          Asst. Sec.
                      Asst.           Colonial High Income
                      Sec.,              Municipal Trust                   Asst. Sec.
                      Counsel         Colonial InterMarket Income
                                         Trust I                           Asst. Sec.
                                      Colonial Intermediate High
                                         Income Fund                       Asst. Sec.
                                      Colonial Investment Grade
                                         Municipal Trust                   Asst. Sec.
                                      Colonial Municipal Income
                                         Trust                             Asst. Sec.
                                      AlphaTrade Inc.                      Asst. Clerk
                                      Liberty Funds Distributor,
                                         Inc.                              Asst. Clerk
                                      Liberty Financial Advisers,
                                         Inc.                              Asst. Sec.
                                      Liberty Funds Group LLC              Asst. Sec.
                                      Liberty Variable Investment
                                         Trust                             Asst. Sec.
                                      Liberty All-Star Equity Fund         Asst. Sec.
                                      Liberty All-Star Growth Fund,
                                         Inc.                              Asst. Sec.
</TABLE>


                                      C-4
<PAGE>   163

<TABLE>
<CAPTION>
<S>                   <C>             <C>                                  <C>
Barsketis, Ophelia    Sr.V.P.         Stein Roe & Farnham Incorporated     Snr. V.P.

Berliant, Allan       V.P.

Boatman, Bonny E.     Sr.V.P.;        Colonial Advisory Services,
                      IPC Mbr.           Inc.                              Exec. V.P.

Bunten, Walter        V.P.

Campbell, Kimberly    V.P.

Carnabucci,
  Dominick            V.P.

Carome, Kevin         Sr.V.P.;        Liberty Funds Distributor,
                      IPC Mbr.          Inc.                               Assistant Clerk
                                      Liberty Funds Group LLC              Sr. V.P.
                                      Stein Roe & Farnham
                                        Incorporated                       General Counsel

Carroll, Sheila A.  Sr.V.P.

Citrone, Frank      Sr.V.P.


Conlin, Nancy L.    Sr. V.P.;          Liberty Trusts I through IX         Secretary
                    Sec.; Clerk        Colonial High Income
                    IPC Mbr.;            Municipal Trust                   Secretary
                    Dir; Gen.          Colonial InterMarket Income
                    Counsel              Trust I                           Secretary
                                       Colonial Intermediate High
                                         Income Fund                       Secretary
                                       Colonial Investment Grade
                                         Municipal Trust                   Secretary
                                       Colonial Municipal Income
                                         Trust                             Secretary
                                       Liberty Funds Distributor,
                                         Inc.                              Dir.; Clerk
                                       Liberty Funds Services, Inc.        Clerk; Dir.
                                       Liberty Funds Group LLC             V.P.; Gen.
                                                                           Counsel and
                                                                           Secretary
                                       Liberty Variable Investment
                                         Trust                             Secretary
</TABLE>

                                      C-5
<PAGE>   164
<TABLE>
<CAPTION>
<S>                   <C>             <C>                                  <C>
                                       Colonial Advisory Services,
                                         Inc.                              Dir.; Clerk
                                       AlphaTrade Inc.                     Dir.; Clerk
                                       Liberty Financial Advisors,
                                         Inc.                              Dir.; Sec.
                                       Liberty All-Star Equity Fund        Secretary
                                       Liberty All-Star Growth Fund,
                                         Inc.                              Secretary

Connaughton,        V.P.               Liberty Trust I through VIII        CAO; Controller
  J. Kevin                             Liberty Variable Investment
                                         Trust                             CAO; Controller
                                       Colonial High Income
                                         Municipal Trust                   CAO; Controller
                                       Colonial Intermarket Income
                                         Trust I                           CAO; Controller
                                       Colonial Intermediate High
                                         Income Fund                       CAO; Controller
                                       Colonial Investment Grade
                                         Municipal Trust                   CAO; Controller
                                       Colonial Municipal Income
                                         Trust                             CAO; Controller
                                       Liberty All-Star Equity Fund        Controller
                                       Liberty All-Star Growth Fund,
                                         Inc.                              Controller
                                       Liberty Trust IX                    Controller

Daniszewski,        V.P.
 Joseph J.

Dearborn, James     V.P.

Desilets, Marian H. V.P.               Liberty Funds Distributor,
                                         Inc.                              V.P.
                                       Liberty Trust I through IX          Asst. Sec.
                                       Colonial High Income
                                         Municipal Trust                   Asst. Sec.
                                       Colonial Intermarket Income
                                         Trust I                           Asst. Sec.
                                       Colonial Intermediate High
                                         Income Fund                       Asst. Sec.
                                       Colonial Investment Grade
</TABLE>

                                      C-6
<PAGE>   165
<TABLE>
<CAPTION>
<S>                   <C>             <C>                                  <C>
                                         Municipal Trust                   Asst. Sec.
                                       Colonial Municipal Income
                                         Trust                             Asst. Sec.
                                       Liberty Variable Investment
                                         Trust                             Asst. Sec.
                                       Liberty All-Star Equity Fund        Asst. Sec.
                                       Liberty All-Star Growth Fund,
                                         Inc.                              Asst. Sec.

DiSilva-Begley,     V.P.               Colonial Advisory Services,         Compliance
  Linda             IPC Mbr.             Inc.                              Officer

Eckelman, Marilyn   Sr.V.P.

Ericson, Carl C.    Sr.V.P.            Colonial Intermediate High
                    IPC Mbr.             Income Fund                       V.P.
                                       Colonial Advisory Services,         Pres.; CEO
                                         Inc.                              and CIO

Evans, C. Frazier   Sr.V.P.            Liberty Funds Distributor,
                                         Inc.                              Mng. Director

Feloney, Joseph L.  V.P.               Colonial Advisory Services,
                    Asst. Treas.         Inc.                              Asst. Treas.
                                       Liberty Funds Group LLC             Asst. Treas.

Finnemore,          Sr.V.P.            Colonial Advisory Services,
  Leslie W.                              Inc.                              Sr. V.P.

Franklin,           Sr. V.P.           AlphaTrade Inc.                     President
  Fred J.           IPC Mbr.           Liberty Financial Companies,        Chief
                                         Inc.                              Compliance Ofcr

Garrison, William   V.P.               Stein Roe & Farnham
                                         Incorporated                      V.P.

Gibson, Stephen E.  Dir.; Pres.;       Liberty Funds Group LLC             Dir.;
                    CEO;                                                   Pres.; CEO;
                    Chairman of                                            Exec. Cmte.
                    the Board;                                             Mbr.; Chm.
                    IPC Mbr.           Liberty Funds Distributor,
                                         Inc.                              Dir.; Chm.
                                       Colonial Advisory Services,
                                         Inc.                              Dir.; Chm.
</TABLE>

                                      C-7
<PAGE>   166
<TABLE>
<CAPTION>
<S>                   <C>             <C>                                  <C>
                                       Liberty Funds Services, Inc.        Dir.; Chm.
                                       AlphaTrade Inc.                     Dir.
                                       Liberty Trusts I through VIII       President
                                       Colonial High Income
                                         Municipal Trust                   President
                                       Colonial InterMarket Income
                                         Trust I                           President
                                       Colonial Intermediate High
                                         Income Fund                       President
                                       Colonial Investment Grade
                                         Municipal Trust                   President
                                       Colonial Municipal Income
                                         Trust                             President
                                       Liberty Financial Advisors,
                                         Inc.                              Director
                                       Stein Roe & Farnham
                                         Incorporated                      Asst. Chairman
                                       Liberty Variable Investment
                                         Trust                             President

Grabowski, Neil     V.P.

Hanson, Loren       Sr. V.P.;
                    IPC Mbr.

Harasimowicz,       V.P.
 Stephen

Harris, David       V.P.               Stein Roe Global Capital Mngmt.     Principal

Hartford, Brian     Sr.V.P.

Haynie, James P.    Sr.V.P.            Colonial Advisory Services,
                                         Inc.                              Sr. V.P.

Held, Dorothy       V.P.

Hernon, Mary        V.P.

Hill, William       V.P.               Colonial Advisory Services,
                                         Inc.                              V.P.

Hounsell, Clare     V.P.               Stein Roe & Farnham
                                         Incorporated                      V.P.

Iudice, Jr.         V.P.;              Liberty Funds Group LLC             Controller,
 Philip J.          Controller                                             CAO, Asst.

</TABLE>

                                      C-8
<PAGE>   167
<TABLE>
<CAPTION>
<S>                   <C>             <C>                                  <C>
                    Asst.                                                  Treas.
                    Treasurer          Liberty Funds Distributor,          CFO,
                                         Inc.                              Treasurer
                                       Colonial Advisory Services,         Controller;
                                         Inc.                              Asst. Treas.
                                       AlphaTrade Inc.                     CFO, Treas.
                                       Liberty Financial Advisors,
                                         Inc.                              Asst. Treas.

Jacoby, Timothy J.  Sr. V.P.;          Liberty Funds Group LLC             V.P., Treasr.,
                    CFO;                                                   CFO
                    Treasurer          Liberty Trusts I through VIII       Treasr.,CFO
                                       Colonial High Income
                                         Municipal Trust                   Treasr.,CFO
                                       Colonial InterMarket Income
                                         Trust I                           Treasr.,CFO
                                       Colonial Intermediate High
                                         Income Fund                       Treasr.,CFO
                                       Colonial Investment Grade
                                         Municipal Trust                   Treasr.,CFO
                                       Colonial Municipal Income
                                         Trust                             Treasr.,CFO
                                       Colonial Advisory Services,
                                         Inc.                              CFO, Treasr.
                                       Liberty Financial Advisors,
                                         Inc.                              Treasurer
                                       Stein Roe & Farnham
                                         Incorporated                      Snr. V.P.
                                       Liberty Variable Investment
                                         Trust                             Treasurer, CFO
                                       Liberty All-Star Equity Fund        Treasurer
                                       Liberty All-Star Growth Fund,
                                         Inc.                              Treasurer
                                       Liberty Trust IX                    Treasurer

Jansen, Deborah     Sr.V.P.            Stein Roe & Farnham
                                         Incorporated                      Sr. V.P.

Jersild, North      V.P.               Stein Roe & Farnham
                                         Incorporated                      V.P.
</TABLE>

                                      C-9
<PAGE>   168
<TABLE>
<CAPTION>
<S>                   <C>             <C>                                  <C>
Johnson, Gordon     V.P.

Knudsen, Gail E.    V.P.               Liberty Trusts I through IX         Asst. Treas.
                                       Colonial High Income
                                         Municipal Trust                   Asst. Treas.
                                       Colonial InterMarket Income
                                         Trust I                           Asst. Treas.
                                       Colonial Intermediate High
                                         Income Fund                       Asst. Treas.
                                       Colonial Investment Grade
                                         Municipal Trust                   Asst. Treas.
                                       Colonial Municipal Income
                                         Trust                             Asst. Treas.
                                       Liberty Variable Investment
                                         Trust                             Asst. Treas.
                                       Liberty All-Star Equity Fund        Asst. Treas.
                                       Liberty All-Star Growth Fund,
                                         Inc.                              Asst. Treas.
Lapointe, Thomas    V.P.

Lasher, Bennett     V.P.

Lasman, Gary        V.P.

Lennon, John E.     Sr.V.P.            Colonial Advisory Services,
                                         Inc.                              V.P.
Lenzi, Sharon       V.P.

Lessard, Kristen    V.P.

Loring, William
   C., Jr.          Sr.V.P.

MacKinnon,
    Donald S.       Sr.V.P.

Marcus, Harold      V.P.

Muldoon, Robert     V.P.

Newman, Maureen     Sr.V.P.

O'Brien, David      Sr.V.P.

Ostrander, Laura    Sr.V.P.            Colonial Advisory Services,
                                         Inc.                              V.P.
Palombo, Joseph R.  Dir.;              Colonial Advisory Services,
                    Exe.V.P.;            Inc.                              Dir.
                    IPC Mbr.;          Colonial High Income
</TABLE>

                                      C-10
<PAGE>   169
<TABLE>
<CAPTION>
<S>                   <C>             <C>                                  <C>
                                         Municipal Trust                   V.P.
                                       Colonial InterMarket
                                         Income Trust I                    V.P.
                                       Colonial Intermediate High
                                         Income Fund                       V.P.
                                       Colonial Investment Grade
                                         Municipal Trust                   V.P.
                                       Colonial Municipal Income
                                         Trust                             V.P.
                                       Liberty Trusts I through IX         V.P.
                                       Liberty Funds Services, Inc.        Director
                                       Liberty Funds Group LLC             CAO; Ex. V.P.
                                       Liberty Funds Distributor,
                                         Inc.                              Director
                                       AlphaTrade Inc.                     Director
                                       Liberty Financial Advisors,
                                         Inc.                              Director
                                       Stein Roe & Farnham
                                         Incorporated                      Exec. V.P.
                                       Liberty Variable Investment
                                         Trust                             V.P.
                                       Liberty All-Star Equity Fund        V.P.
                                       Liberty All-Star Growth Fund,
                                         Inc.                              V.P.

Peishoff, William   V.P.

Peterson, Ann T.    V.P.               Colonial Advisory Services,
                                         Inc.                              V.P.
Pielech, Mitchell   V.P.

Pope, David         V.P.

Rao, Gita           Sr.V.P.

Reading, John       V.P.;              Liberty Funds Services, Inc.        Asst. Clerk
                    Asst.              Liberty Funds Group LLC             Asst. Sec.
                    Sec.;              Colonial Advisory Services,
                    Asst.                Inc.                              Asst. Clerk
                    Clerk and          Liberty Funds Distributor,
                    Counsel              Inc.                              Asst. Clerk
                                       AlphaTrade Inc.                     Asst. Clerk
                                       Liberty Trusts I through IX         Asst. Sec.
                                       Colonial High Income
                                         Municipal Trust                   Asst. Sec.
                                       Colonial InterMarket Income
                                         Trust I                           Asst. Sec.

</TABLE>

                                      C-11
<PAGE>   170
<TABLE>
<CAPTION>
<S>                   <C>             <C>                                  <C>
                                       Colonial Intermediate High
                                         Income Fund                       Asst. Sec.
                                       Colonial Investment Grade
                                         Municipal Trust                   Asst. Sec.
                                       Colonial Municipal Income
                                         Trust                             Asst. Sec.
                                       Liberty Financial Advisors,
                                         Inc.                              Asst. Sec.
                                       Liberty Variable Investment
                                         Trust                             Asst. Sec.
                                       Liberty All-Star Equity Fund        Asst. Sec.
                                       Liberty All-Star Growth Fund,
                                         Inc.                              Asst. Sec.

Rega, Michael       V.P.               Colonial Advisory Services,
                                         Inc.                              V.P.
Salopek, Steven     V.P.               Stein Roe & Farnham
                                         Incorporated                      V.P.

Schermerhorn, Scott Sr. V.P.

Seibel, Sandra L.   V.P.               Colonial Advisory Services,
                                         Inc.                              V.P.

Shields, Yvonne     V.P.               Stein Roe & Farnham
                                         Incorporated                      V.P.

Smalley, Greg       V.P.

Spanos, Gregory J.  Sr. V.P.           Colonial Advisory Services,
                                         Inc.                              Exec. V.P.

Stevens, Richard    V.P.               Colonial Advisory Services,
                                         Inc.                              V.P.

Stoeckle, Mark      Sr.V.P.            Colonial Advisory Services,
                                         Inc.                              V.P.

Swayze, Gary        Sr.V.P.

Thomas, Ronald      V.P.

Wallace, John       V.P.               Colonial Advisory Services,
                    Asst.Treas.          Inc.                              Asst. Treas.
                                       Liberty Funds Group LLC             Asst. Treas.
Ware, Elizabeth M.  V.P.

Wiley, Christine    V.P.
</TABLE>

                                      C-12
<PAGE>   171
<TABLE>
<CAPTION>
<S>                 <C>            <C>                            <C>
Wiley, Peter        V.P.
</TABLE>

- -----------------------------------------------
*The Principal address of all of the officers and directors of the investment
 adviser is One Financial Center, Boston, MA 02111.


Item 31.  Location of Accounts and Records:

          Registrant:                  Colonial Investment Grade Municipal Trust
                                       One Financial Center
                                       Boston, Massachusetts 02111-2621

          Investment Advisor:          Colonial Management Associates, Inc.
                                       One Financial Center
                                       Boston, Massachusetts 02111-2621

          Custodian:                   The Chase Manhattan Bank
                                       270 Park Avenue
                                       New York, New York 10017-2070


          Transfer Agent:              Bank Boston, N.A.
                                       100 Federal Street
                                       Boston, Massachusetts 02110


Item 32.  Management Services.
          Not Applicable.


Item 33.  Undertakings.

          The undersigned Registrant hereby undertakes:

         (1)    To suspend the offering of its preferred shares until it amends
                its prospectus contained herein if (i) subsequent to the
                effective date of this Registration Statement, its net asset
                value per share of beneficial interest declines more than ten
                percent from its net asset value per share of beneficial
                interest as of the effective date of this Registration
                Statement, or (ii) its net asset value per share of beneficial
                interest increases to an amount greater than its net proceeds as
                stated in the prospectus contained herein.

         (2)    Not applicable.

         (3)    Not applicable.

         (4)    Not applicable.

         (5)(a) That, for the purpose of determining any liability under the
                Securities Act of 1933, the information omitted from the form of
                prospectus filed as a part of this Registration Statement in
                reliance upon Rule 430A and contained in a form of prospectus
                filed by the Registrant under Rule 497(h) under the Securities
                Act of 1933 shall be deemed to be a part of this Registration
                Statement as of the time it was declared effective; and

            (b) That, for the purpose of determining any liability under the
                Securities Act of 1933, each post-effective amendment that
                contains a form of prospectus shall be deemed to be a new
                registration statement relating to the securities offered
                therein, and the offering of the securities at that time shall
                be deemed to be the initial bona fide offering thereof.

         (6)    To send by first class mail or other means designed to ensure
                equally prompt delivery, within two business days of receipt of
                a written or oral request, the Statement of Additional
                Information.







                                      C-13
<PAGE>   172




                                   SIGNATURES


Pursuant to the requirements of the Securities Act of 1933, as amended, and the
Investment Company Act of 1940, as amended, the Registrant has duly caused this
Amendment to the Registration Statement on Form N-2 to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Boston and the
Commonwealth of Massachusetts on the 20th day of August, 1999.



                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST



                         By: /s/ STEPHEN E. GIBSON
                             ---------------------
                             Stephen E. Gibson
                             President

Pursuant to the requirements of the Securities Act of 1933, this Amendment to
the Registration Statement has been signed below by the following persons in
their capacities and on the date indicated.

SIGNATURES                    TITLE                         DATE
- ----------                    -----                         ----



/s/ STEPHEN E. GIBSON         President (chief              August 20, 1999
- ------------------------      executive officer)
Stephen E. Gibson



/s/ J. KEVIN CONNAUGHTON      Controller and Chief          August 20, 1999
- ------------------------      Accounting Officer
J. Kevin Connaughton



/s/ TIMOTHY J. JACOBY         Treasurer and Chief           August 20, 1999
- ------------------------      Financial Officer
Timothy J. Jacoby



                                      C-14
<PAGE>   173






ROBERT J. BIRNBAUM*           Trustee
- ------------------
Robert J. Birnbaum


TOM BLEASDALE*                Trustee
- -------------
Tom Bleasdale


JOHN CARBERRY*                Trustee
- -------------
John Carberry


LORA S. COLLINS*              Trustee
- ---------------
Lora S. Collins


JAMES E. GRINNELL*            Trustee
- -----------------
James E. Grinnell


RICHARD W. LOWRY*             Trustee             By:*/s/ WILLIAM J. BALLOU
- ----------------                                      ---------------------
Richard W. Lowry                                      William J. Ballou
                                                      Attorney-in-fact
                                                      For each Trustee
                                                      August 20, 1999


SALVATORE MACERA*             Trustee
- -----------------
Salvatore Macera


WILLIAM E. MAYER*             Trustee
- ----------------
William E. Mayer


JAMES L. MOODY, JR. *         Trustee
- -------------------
James L. Moody, Jr.


JOHN J. NEUHAUSER*            Trustee
- -----------------
John J. Neuhauser


THOMAS E. STITZEL*            Trustee
- -----------------
Thomas E. Stitzel


ROBERT L. SULLIVAN*           Trustee
- ------------------
Robert L. Sullivan


ANNE-LEE VERVILLE*            Trustee
- -----------------
Anne-Lee Verville



                                      C-15
<PAGE>   174



                                  EXHIBIT INDEX



          (b)(2)    Form of Amended and Restated By-Laws

          (d)(2)    Form of specimen certificate for the Municipal Auction Rate
                     Cumulative Preferred Shares

          (h)       Form of Underwriting Agreement

          (k)(1)    Form of Auction Agency Agreement

          (k)(2)    Form of Broker-Dealer Agreement

          (l)(1)    Opinion and Consent of Ropes & Gray

          (n)       Consent of independent accountants


<PAGE>   1
                                                                  Exhibit (b)(2)

                          AMENDED AND RESTATED BY-LAWS
                                       OF
                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST




                                    Article 1.
             AGREEMENT AND DECLARATION OF TRUST AND PRINCIPAL OFFICE

     1.1. AGREEMENT AND DECLARATION OF TRUST. These By-Laws shall be subject to
the Agreement and Declaration of Trust, as from time to time in effect (the
"Declaration of Trust"), of Colonial Investment Grade Municipal Trust, a
Massachusetts business trust established by the Declaration of Trust (the
"Trust").

     1.2. PRINCIPAL OFFICE OF THE TRUST. The principal office of the Trust shall
be located in Boston, Massachusetts.

                                    Article 2.
                                  SHAREHOLDERS

     2.1. SHAREHOLDERS MEETINGS. The annual meeting of the shareholders of the
Trust shall be held between April 1 and May 31 in each year, beginning in 1990,
on a date and at a time within that period set by the Trustees. A special
meeting of the shareholders of the Trust may be called at any time by the
Trustees, by the president or, if the Trustees and the president shall fail to
call any meeting of shareholders for a period of 30 days after written
application of one or more shareholders who hold at least 10% of all outstanding
shares of the Trust, then such shareholders may call such meeting. Each call of
a meeting shall state the place, date, hour and purposes of the meeting.

     2.2. PLACE OF MEETINGS. All meetings of the shareholders shall be held at
the principal office of the Trust, or, to the extent permitted by the
Declaration of Trust, at such other place within the United States as shall be
designated by the Trustees or the president of the Trust.

     2.3. NOTICE OF MEETINGS. A written notice of each meeting of shareholders,
stating the place, date and hour and the purposes of the meeting, shall be given
at least seven days before the meeting to each shareholder entitled to vote
thereat by leaving such notice with him or at his residence or usual place of
business or by mailing it, postage prepaid, and addressed to such shareholder at
his address as it appears in the records of the Trust. Such notice shall be
given by the secretary or an assistant secretary or by an officer designated by
the Trustees. No notice of any meeting of shareholders need be given to a
shareholder if a written waiver of notice, executed before or after the meeting
by such shareholder or his attorney thereunto duly authorized, is filed with the
records of the meeting.

<PAGE>   2

     2.4. BALLOTS. No ballot shall be required for any election unless requested
by a shareholder present or represented at the meeting and entitled to vote in
the election.

     2.5. PROXIES. Shareholders entitled to vote may vote either in person or by
proxy in writing dated not more than six months before the meeting named
therein, which proxies shall be filed with the secretary or other person
responsible to record the proceedings of the meeting before being voted. Unless
otherwise specifically limited by their terms, such proxies shall entitle the
holders thereof to vote at any adjournment of such meeting but shall not be
valid after the final adjournment of such meeting. The placing of a
shareholder's name on a proxy pursuant to telephonic or electronically
transmitted instructions obtained pursuant to procedures reasonably designed to
verify that such instructions have been authorized by such shareholder shall
constitute execution of such proxy by or on behalf of such shareholder.

                                   Article 3.
                                    TRUSTEES

     3.1. COMMITTEES AND ADVISORY BOARD. The Trustees may appoint from their
number an executive committee and other committees. Except as the Trustees may
otherwise determine, any such committee may make rules for conduct of its
business. The Trustees may appoint an advisory board to consist of not less than
two nor more than five members. The members of the advisory board shall be
compensated in such manner as the Trustees may determine and shall confer with
and advise the Trustees regarding the investments and other affairs of the
Trust. Each member of the advisory board shall hold office until the first
meeting of the Trustees following the next meeting of the shareholders and until
his successor is elected and qualified, or until he sooner dies, resigns, is
removed, or becomes disqualified, or until the advisory board is sooner
abolished by the Trustees.

     In addition, the Trustees may appoint a Dividend Committee of not less than
three persons, at least one of whom shall be a Trustee of the Trust.

     No special compensation shall be payable to members of the Dividend
Committee. Each member of the Dividend Committee will hold office until his or
her successor is elected and qualified or until the member dies, resigns, is
removed, becomes disqualified or until the Committee is abolished by the
Trustees.

     3.2. REGULAR MEETINGS. Regular meetings of the Trustees may be held without
call or notice at such places and at such times as the Trustees may from time to
time determine, provided that notice of the first regular meeting following any
such determination shall be given to absent Trustees.

     3.3. SPECIAL MEETINGS. Special meetings of the Trustees may be held at any
time and at any place designated in the call of the meeting, when called by the
president or the treasurer or by

                                      -2-

<PAGE>   3



     two or more Trustees, sufficient notice thereof being given to each Trustee
by the secretary or an assistant secretary or by the officer or one of the
Trustees calling the meeting.

     3.4. NOTICE. It shall be sufficient notice to a Trustee to send notice by
mail at least forty-eight hours or by telegram at least twenty-four hours before
the meeting addressed to the Trustee at his or her usual or last known business
or residence address or to give notice to him or her in person or by telephone
at least twenty-four hours before the meeting. Notice of a meeting need not be
given to any Trustee if a written waiver of notice, executed by him or her
before or after the meeting, is filed with the records of the meeting, or to any
Trustee who attends the meeting without protesting prior thereto or at its
commencement the lack of notice to him or her. Neither notice of a meeting nor a
waiver of a notice need specify the purposes of the meeting.

     3.5. QUORUM. At any meeting of the Trustees one-third of the Trustees then
in office shall constitute a quorum; provided, however, a quorum shall not be
less than two unless the number of Trustees then in office shall be one. Any
meeting may be adjourned from time to time by a majority of the votes cast upon
the question, whether or not a quorum is present, and the meeting may be held as
adjourned without further notice.

                                    Article 4.
                               OFFICERS AND AGENTS

     4.1. ENUMERATION; QUALIFICATION. The officers of the Trust shall be a
president, a treasurer, a secretary and such other officers, if any, as the
Trustees from time to time may in their discretion elect or appoint or as the
elected officers may appoint pursuant to section 4.3 of these By-Laws. The Trust
may also have such agents, if any, as the Trustees from time to time may in
their discretion appoint. Any officer may be but none need be a Trustee or
shareholder. Any two or more offices may be held by the same person.

     4.2. POWERS. Subject to the other provisions of these By-Laws, each officer
shall have, in addition to the duties and powers herein and in the Declaration
of Trust set forth, such duties and powers as are commonly incident to his or
her office as if the Trust were organized as a Massachusetts business
corporation and such other duties and powers as the Trustees may from time to
time designate, including without limitation the power to make purchases and
sales of portfolio securities of the Trust pursuant to recommendations of the
Trust's investment adviser in accordance with the policies and objectives of the
Trust set forth in its prospectus and with such general or specific instructions
as the Trustees may from time to time have issued.

     4.3. ELECTION. The president, the treasurer and the secretary shall be
elected annually by the Trustees at their first meeting following the annual
meeting of the shareholders. Other elected officers, if any, may be elected or
appointed by the Trustees at said meeting or at any other time. Assistant
officers may be appointed by the elected officers.

                                      -3-

<PAGE>   4



     4.4. TENURE. The president, the treasurer and the secretary shall hold
office until their respective successors are chosen and qualified, or in each
case until he or she sooner dies, resigns, is removed or becomes disqualified.
Each other officer shall hold office at the pleasure of the Trustees. Each agent
shall retain his or her authority at the pleasure of the Trustees.

     4.5. PRESIDENT AND VICE PRESIDENTS. The president shall be the chief
executive officer of the Trust. The president shall preside at all meetings of
the shareholders and of the Trustees at which he or she is present, except as
otherwise voted by the Trustees. Any vice president shall have such duties and
powers as shall be designated from time to time by the Trustees.

     4.6. TREASURER AND CONTROLLER. The treasurer shall be the chief financial
officer of the Trust and, subject to any arrangement made by the Trustees with a
bank or trust company or other organization as custodian or transfer or
shareholder services agent, shall be in charge of its valuable papers and shall
have such duties and powers as shall be designated from time to time by the
Trustees or by the president. Any assistant treasurer shall have such duties and
powers as shall be designated from time to time by the Trustees.

     The Controller shall be the chief accounting officer of the Trust and shall
be in charge of its books of account and accounting records. The Controller
shall be responsible for preparation of financial statements of the Trust and
shall have such other duties and powers as may be designated from time to time
by the Trustees or the President.

     4.7. SECRETARY AND ASSISTANT SECRETARIES. The secretary shall record all
proceedings of the shareholders and the Trustees in books to be kept therefor,
which books shall be kept at the principal office of the Trust. In the absence
of the secretary from any meeting of shareholders or Trustees, an assistant
secretary, or if there be none or he or she is absent, a temporary clerk chosen
at the meeting shall record the proceedings thereof in the aforesaid books.

                                    Article 5.
                            RESIGNATIONS AND REMOVALS

     Any Trustee, officer or advisory board member may resign at any time by
delivering his or her resignation in writing to the president, the treasurer or
the secretary or to a meeting of the Trustees. The Trustees may remove any
officer elected by them with or without cause by the vote of a majority of the
Trustees then in office. Except to the extent expressly provided in a written
agreement with the Trust, no Trustee, officer, or advisory board member
resigning, and no officer or advisory board member removed shall have any right
to any compensation for any period following his or her resignation or removal,
or any right to damages on account of such removal.


                                      -4-

<PAGE>   5

                                    Article 6.
                                    VACANCIES

     A vacancy in any office may be filled at any time. Each successor shall
hold office for the unexpired term, and in the case of the president, the
treasurer and the secretary, until his or her successor is chosen and qualified,
or in each case until he or she sooner dies, resigns, is removed or becomes
disqualified.

                                    Article 7.
                          SHARES OF BENEFICIAL INTEREST

     7.1. SHARE CERTIFICATES. Except as provided in Section 12.1, each
shareholder shall be entitled to a certificate stating the number of shares
owned by him or her, in such form as shall be prescribed from time to time by
the Trustees. Such certificate shall be signed by the president or a vice
president and by the treasurer or an assistant treasurer. Such signatures may be
facsimiles if the certificate is signed by a transfer agent or by a registrar
who is not a Trustee, officer or employee of the Trust. In case any officer who
has signed or whose facsimile signature has been placed on such certificate
shall have ceased to be such officer before such certificate is issued, it may
be issued by the Trust with the same effect as if he or she were such officer at
the time of its issue.

     In lieu of issuing certificates for shares, the Trustees or the transfer
agent may either issue receipts therefor or may keep accounts upon the books of
the Trust for the record holders of such shares, who shall in either case be
deemed, for all purposes hereunder, to be the holders of certificates for such
shares as if they had accepted such certificates and shall be held to have
expressly assented and agreed to the terms hereof.

     7.2. LOSS OF CERTIFICATES. In the case of the alleged loss or destruction
or the mutilation of a share certificate, a duplicate certificate may be issued
in place thereof, upon such terms as the Trustees may prescribe.

     7.3. DISCONTINUANCE OF ISSUANCE OF CERTIFICATES. The Trustees may at any
time discontinue the issuance of share certificates and may, by written notice
to each shareholder, require the surrender of share certificates of the Trust
for cancellation. Such surrender and cancellation shall not affect the ownership
of shares in the Trust.

                                    Article 8.
                     RECORD DATE AND CLOSING TRANSFER BOOKS

     The Trustees may fix in advance a time, which shall not be more than 90
days before the date of any meeting of shareholders or the date for the payment
of any dividend or making of any other distribution to shareholders, as the
record date for determining the shareholders having the right to notice and to
vote at such meeting and any adjournment thereof or the right to receive


                                      -5-
<PAGE>   6


such dividend or distribution, and in such case only shareholders of record on
such record date shall have such right, notwithstanding any transfer of shares
on the books of the Trust after the record date; or without fixing such record
date the Trustees may for any such purposes close the transfer books for all or
any part of such period.

                                    Article 9.
                                      SEAL

     The seal of the Trust shall, subject to alteration by the Trustees, consist
of a flat-faced circular die with the word "Massachusetts" together with the
name of the Trust and the year of its organization, cut or engraved thereon;
but, unless otherwise required by the Trustees, the seal shall not be necessary
to be placed on, and its absence shall not impair the validity of, any document,
instrument or other paper executed and delivered by or on behalf of the Trust.

                                   Article 10.
                               EXECUTION OF PAPERS

     Except as the Trustees may generally or in particular cases authorize the
execution thereof in some other manner, all deeds, leases, transfers, contracts,
bonds, notes, checks, drafts and other obligations made, accepted or endorsed by
the Trust shall be signed, and all transfers of securities standing in the name
of the Trust shall be executed, by the president or by one of the vice
presidents or by the treasurer or by whomsoever else shall be designated for
that purpose by the vote of the Trustees and need not bear the seal of the
Trust.

                                   Article 11.
                                   FISCAL YEAR

     Except as from time to time otherwise provided by the Trustees, the fiscal
year of the Trust shall end on December 31.

                                   Article 12.
                          SHARES OF BENEFICIAL INTEREST

         The Trust has an unlimited number of common shares, without par value,
which may be issued from time to time by the Trustees of the Trust. The Trust
also has a class of 2,400 preferred shares, without par value, which may be
issued by the Trustees from time to time in one or more series and with such
designations, preferences and other rights, qualifications, limitations and
restrictions as are determined by the Board of Trustees or a duly authorized
committee thereof and set forth in this Article 12.

                                      -6-

<PAGE>   7

     12.1. STATEMENT CREATING ONE SERIES OF MUNICIPAL AUCTION RATE CUMULATIVE
PREFERRED SHARES .

     There is one series of Municipal Auction Rate Cumulative Preferred Shares.

                                     PART I
                                  DESIGNATION

     SERIES M: A series of 2,400 preferred shares, without par value,
liquidation preference $25,000 per share plus accumulated but unpaid dividends,
if any, thereon (whether or not earned or declared), is hereby designated
"Municipal Auction Rate Cumulative Preferred Shares, Series M" and is referred
to below as "Series M Municipal Preferred." Each share of Series M Municipal
Preferred shall be issued on __________ __, 1999; have an Applicable Rate for
its Initial Rate Period equal to ___% per annum; have an initial Dividend
Payment Date of Tuesday, __________ __, 1999; and have such other preferences,
limitations and relative voting and other rights, in addition to those required
by applicable law or set forth in the Trust's Declaration of Trust, as are set
forth in Part I and Part II of this Section 12.1. Series M Municipal Preferred
shall constitute a separate series of Municipal Preferred of the Trust. The
Board of Trustees of the Trust may, in their discretion, increase the number of
shares of Municipal Preferred authorized under these By-laws to authorize the
issuance of another series of Municipal Preferred so long as such issuance is
permitted by paragraph 5 of Part I of this Section 12.1.

     1. DEFINITIONS. Unless the context or use indicates another or different
meaning or intent, in Part I and Part II of this Section 12.1 the following
terms have the following meanings, whether used in the singular or plural:

     "'AA' Composite Commercial Paper Rate," on any date for any Rate Period of
shares of a series of Municipal Preferred, shall mean (i) (A) in the case of any
Minimum Rate Period or any Special Rate Period of fewer than 49 Rate Period
Days, the interest equivalent of the 30-day rate; provided, however, that if
such Rate Period is a Minimum Rate Period and the "AA" Composite Commercial
Paper Rate is being used to determine the Applicable Rate for shares of such
series when all of the Outstanding shares of such series are subject to
Submitted Hold Orders, then the interest equivalent of the seven-day rate, and
(B) in the case of any Special Rate Period of (1) 49 or more but fewer than 70
Rate Period Days, the interest equivalent of the 60-day rate; (2) 70 or more but
fewer than 85 Rate Period Days, the arithmetic average of the interest
equivalent of the 60-day and 90-day rates; (3) 85 or more but fewer than 99 Rate
Period Days, the interest equivalent of the 90-day rate; (4) 99 or more but
fewer than 120 Rate Period Days, the arithmetic average of the interest
equivalent of the 90-day and 120-day rates; (5) 120 or more but fewer than 141
Rate Period Days, the interest equivalent of the 120-day rate; (6) 141 or more
but fewer than 162 Rate Period Days, the arithmetic average of the interest
equivalent of the 120-day and 180-day rates; and (7) 162 or more but fewer than
183 Rate Period Days, the interest equivalent of the 180-day rate, in each case
on commercial paper placed on behalf of issuers whose corporate bonds are rated
"AA" by S&P or the equivalent of such rating by S&P or another rating agency,


                                      -7-

<PAGE>   8


as made available on a discount basis or otherwise by the Federal Reserve Bank
of New York for the Business Day next preceding such date; or (ii) in the event
that the Federal Reserve Bank of New York does not make available any such rate,
then the arithmetic average of such rates, as quoted on a discount basis or
otherwise, by the Commercial Paper Dealers to the Auction Agent for the close of
business on the Business Day next preceding such date. If any Commercial Paper
Dealer does not quote a rate required to determine the "AA" Composite Commercial
Paper Rate, the "AA" Composite Commercial Paper Rate shall be determined on the
basis of the quotation or quotations furnished by the remaining Commercial Paper
Dealer or Commercial Paper Dealers and any Substitute Commercial Paper Dealer or
Substitute Commercial Paper Dealers selected by the Trust to provide such rate
or rates not being supplied by any Commercial Paper Dealer or Commercial Paper
Dealers, as the case may be, or, if the Trust does not select any such
Substitute Commercial Paper Dealer or Substitute Commercial Paper Dealers, by
the remaining Commercial Paper Dealer or Commercial Paper Dealers. For purposes
of this definition, the "interest equivalent" of a rate stated on a discount
basis (a "discount rate") for commercial paper of a given days' maturity shall
be equal to the quotient (rounded upwards to the next higher one-thousandth
(.001) of 1% of (A) the discount rate divided by (B) the difference between (x)
1.00 and (y) a fraction the numerator of which shall be the product of the
discount rate times the number of days in which such commercial paper matures
and the denominator of which shall be 360.

     "Accountant's Confirmation" shall have the meaning specified in paragraph
7(c) of Part I of this Section 12.1.

     "Affiliate" shall mean, for purposes of the definition of "Outstanding,"
any Person known to the Auction Agent to be controlled by, in control of or
under common control with the Trust; provided, however, that no Broker-Dealer
controlled by, in control of or under common control with the Trust shall be
deemed to be an Affiliate nor shall any corporation or any Person controlled by,
in control of or under common control with such corporation, one of the
trustees, directors or executive officers of which is a trustee of the Trust be
deemed to be an Affiliate solely because such trustee, director or executive
officer is also a trustee of the Trust.

     "Agent Member" shall mean a member of or participant in the Securities
Depository that will act on behalf of a Bidder.

     "Anticipation Notes" shall mean Tax Anticipation Notes (TANs), Revenue
Anticipation Notes (RANs), Tax and Revenue Anticipation Notes (TRANs), Grant
Anticipation Notes (GANs) that are rated by S&P and Bond Anticipation Notes
(BANs).

     "Applicable Rate" shall have the meaning specified in paragraph 2(e)(i) of
Part I of this Section 12.1.

     "Auction" shall mean each periodic implementation of the Auction
Procedures.


                                      -8-

<PAGE>   9


     "Auction Agency Agreement" shall mean the agreement between the Trust and
the Auction Agent which provides, among other things, that the Auction Agent
will follow the Auction Procedures for purposes of determining the Applicable
Rate for shares of a series of Municipal Preferred so long as the Applicable
Rate for shares of such series is to be based on the results of an Auction.

     "Auction Agent" shall mean the entity appointed as such by a resolution of
the Board of Trustees in accordance with paragraph 6 of Part II of this Section
12.1.

     "Auction Date," with respect to any Rate Period, shall mean the Business
Day next preceding the first day of such Rate Period.

     "Auction Procedures" shall mean the procedures for conducting Auctions set
forth in Part II of this Section 12.1.

     "Available Municipal Preferred" shall have the meaning specified in
paragraph 3(a) of Part II of this Section 12.1.

     "Benchmark Rate" shall have the meaning specified in paragraph 3(c) of Part
II of this Section 12.1.

     "Beneficial Owner" with respect to shares of a series of Municipal
Preferred, means a customer of a Broker-Dealer who is listed on the records of
that Broker-Dealer (or, if applicable, the Auction Agent) as a holder of shares
of such series.

     "Bid" and "Bids" shall have the respective meanings specified in paragraph
1(a) of Part II of this Section 12.1.

     "Bidder" and "Bidders" shall have the respective meanings specified in
paragraph 1(a) of Part II of this Section 12.1; provided, however, that neither
the Trust nor any affiliate thereof shall be permitted to be a Bidder in an
Auction, except that any Broker-Dealer that is an affiliate of the Trust may be
a Bidder in an Auction, but only if the Orders placed by such Broker-Dealer are
not for its own account.

     "Board of Trustees" shall mean the Board of Trustees of the Trust or any
duly authorized committee thereof.

     "Broker-Dealer" shall mean any broker-dealer, commercial bank or other
entity permitted by law to perform the functions required of a Broker-Dealer in
Part II of this Section 12.1, that is a member of, or a participant in, the
Securities Depository or is an affiliate of such member or participant, has been
selected by the Trust and has entered into a Broker-Dealer Agreement that
remains effective.

                                      -9-

<PAGE>   10


     "Broker-Dealer Agreement" shall mean an agreement among the Trust, the
Auction Agent and a Broker-Dealer pursuant to which such Broker-Dealer agrees to
follow the procedures specified in Part II of this Section 12.1.

     "Business Day" shall mean a day on which the New York Stock Exchange is
open for trading, and which is neither a Saturday, Sunday nor any other day on
which banks in The City of New York, New York are authorized by law to close.

     "By-laws" means these Amended and Restated By-laws of the Trust.

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

     "Commercial Paper Dealers" means Lehman Commercial Paper Incorporated,
Goldman, Sachs & Co. and Merrill Lynch, Pierce, Fenner & Smith Incorporated and
such other commercial paper dealer or dealers as the Trust may from time to time
appoint, or, in lieu of any thereof, their respective affiliates or successors.

     "Common Shares" means the common shares of beneficial interest, without par
value, of the Trust.

     "Cure Date" shall have the meaning specified in paragraph 11(b) of Part I
of this Section 12.1.

     "Date of Original Issue" with respect to shares of a series of Municipal
Preferred, shall mean the date on which the Trust originally issued such shares.

     "Declaration" shall mean the Agreement and Declaration of Trust dated March
16, 1989 of the Trust, as amended by Amendment No. 1 dated July 30, 1999 to the
Agreement and Declaration of Trust of the Trust, both on file with the Secretary
of The Commonwealth of Massachusetts and as hereafter restated or amended from
time to time.

     "Deposit Securities" shall mean cash and Municipal Obligations rated at
least A-1+ or SP-1+ by S&P, except that, for purposes of subparagraph (a)(v) of
paragraph 11 of Part I of this Section 12.1, such Municipal Obligations shall be
considered "Deposit Securities" only if they are also rated P-1, MIG-1 or VMIG-1
by Moody's.

     "Discounted Value," as of any Valuation Date, shall mean, (i) with respect
to an S&P Eligible Asset, the quotient of the Market Value thereof divided by
the applicable S&P Discount Factor and (ii) (a) with respect to a Moody's
Eligible Asset that is not currently callable as of such Valuation Date at the
option of the issuer thereof, the quotient of the Market Value thereof divided
by the applicable Moody's Discount Factor, or (b) with respect to a Moody's
Eligible Asset that is currently callable as of such Valuation Date at the
option of the issuer thereof, the

                                      -10-

<PAGE>   11


quotient of (1) the lesser of the Market Value or call price thereof, including
any call premium, divided by (2) the applicable Moody's Discount Factor.

     "Dividend Payment Date," with respect to shares of a series of Municipal
Preferred, shall mean any date on which dividends are payable on shares of such
series pursuant to the provisions of paragraph 2(d) of Part I of this Section
12.1.

     "Dividend Period," with respect to shares of a series of Municipal
Preferred, shall mean the period from and including the Date of Original Issue
of shares of such series to but excluding the initial Dividend Payment Date for
shares of such series and any period thereafter from and including one Dividend
Payment Date for shares of such series to but excluding the next succeeding
Dividend Payment Date for shares of such series.

     "Escrowed Bonds" means Municipal Obligations that (i) have been determined
to be legally defeased in accordance with S&P's legal defeasance criteria, (ii)
have been determined to be economically defeased in accordance with S&P's
economic defeasance criteria and assigned a rating of AAA by S&P, (iii) are not
rated by S&P but have been determined to be legally defeased by Moody's, or (iv)
have been determined to be economically defeased by Moody's and assigned a
rating no lower than the rating that is Moody's equivalent of S&P's AAA rating.

     "Existing Holder," with respect to shares of a series of Municipal
Preferred, shall mean a Broker-Dealer (or any such other Person as may be
permitted by the Trust) that is listed on the records of the Auction Agent as a
holder of shares of such series.

     "Failure to Deposit," with respect to shares of a series of Municipal
Preferred, shall mean a failure by the Trust to pay to the Auction Agent, not
later than 12:00 noon, New York City time, (A) on the Business Day next
preceding any Dividend Payment Date for shares of such series, in funds
available on such Dividend Payment Date in The City of New York, New York, the
full amount of any dividend (whether or not earned or declared) to be paid on
such Dividend Payment Date on any share of such series or (B) on the Business
Day next preceding any redemption date in funds available on such redemption
date for shares of such series in The City of New York, New York, the Redemption
Price to be paid on such redemption date for any shares of such series after
notice of redemption is mailed pursuant to paragraph 11(c) of Part I of this
Section 12.1; provided, however, that the foregoing clause (B) shall not apply
to the Trust's failure to pay the Redemption Price in respect of shares of
Municipal Preferred when the related Notice of Redemption provides that
redemption of such shares is subject to one or more conditions precedent and any
such condition precedent shall not have been satisfied at the time or times and
in the manner specified in such Notice of Redemption.

     "Federal Tax Rate Increase" shall have the meaning specified in the
definition of "Moody's Volatility Factor."

                                      -11-

<PAGE>   12


     "Gross-up Payment" in respect of any dividend means payment to a Holder of
shares of a series of Municipal Preferred of an amount which, giving effect to
the Taxable Allocations made with respect to such dividend, would cause such
Holder's after-tax returns (taking into account both the Taxable Allocations and
the Gross-up Payment) to be equal to the after-tax return the Holder would have
received if no such Taxable Allocations had occurred. Such Gross-up Payment
shall be calculated: (i) without consideration being given to the time value of
money; (ii) assuming that no Holder of shares of Municipal Preferred is subject
to the Federal alternative minimum tax with respect to dividends received from
the Trust; and (iii) assuming that each Holder of shares of Municipal Preferred
is taxable at the maximum marginal regular Federal individual income tax rate
applicable to ordinary income or net capital gain, as applicable, or the maximum
marginal regular Federal corporate income tax rate applicable to ordinary income
or net capital gain, as applicable, whichever is greater, in effect at the time
such Gross-up Payment is made.

     "Holder," with respect to shares of a series of Municipal Preferred, shall
mean the Registered Holder of such shares as the same appears on the record
books of the Trust.

     "Hold Order" and "Hold Orders" shall have the respective meanings specified
in paragraph 1(a) of Part II of this Section 12.1.

     "Independent Accountant" shall mean a nationally recognized accountant, or
firm of accountants, that is, with respect to the Trust, an independent public
accountant or firm of independent public accountants under the Securities Act of
1933, as amended from time to time.

     "Initial Margin" means the amount of cash or securities deposited with a
broker as a margin payment at the time of purchase or sale of a futures
contract.

     "Initial Rate Period," with respect to shares of a series of Municipal
Preferred, shall mean the period from and including the Date of Original Issue
for such series to but excluding the initial Dividend Payment Date for such
series.

     "Interest Equivalent" shall mean a yield on a 360-day basis of a discount
basis security which is equal to the yield on an equivalent interest-bearing
security.

     "Inverse Floater" shall mean trust certificates or other instruments
evidencing interests in one or more municipal securities that qualify as S&P
Eligible Assets (and satisfy the issuer and size requirements of the definition
of S&P Eligible Assets) the interest rates on which are adjusted at short-term
intervals on a basis that is inverse to the simultaneous readjustment of the
interest rates on corresponding floating rate trust certificates or other
instruments issued by the same issuer, provided that the ratio of the aggregate
dollar amount of floating rate instruments to inverse floating rate instruments
issued by the same issuer does not exceed one to one at their time or original
issuance unless the floating rate instrument has only one reset remaining until
maturity.


                                      -12-

<PAGE>   13



     "Kenny Index" shall have the meaning set forth under the definition of
"Taxable Equivalent of the Short-Term Municipal Bond Rate."

     "Late Charge" shall have the meaning specified in paragraph 2(e)(i)(B) of
Part I of this Section 12.1.

     "Liquidation Preference," with respect to a given number of shares of
Municipal Preferred, means $25,000 times that number.

     "Market Value" of any asset of the Trust means the market value thereof
determined by the pricing service designated from time to time by the Board of
Trustees. Market Value of any asset shall include any interest accrued thereon.
The pricing service will use current industry standards to value portfolio
securities. The pricing service may employ electronic data processing techniques
or a matrix system, or both, to determine valuations. Securities for which
quotations are not readily available shall be valued at fair value as determined
by the pricing service using methods which include consideration of: yields or
prices of municipal bonds of comparable quality, type of issue, coupon, maturity
and rating; indications as to value from dealers; and general market conditions.
In the event the pricing service is unable to value a security, the security
shall be valued at the lower of two dealer bids obtained by the Trust from
dealers who are nationally recognized members of the National Association of
Securities Dealers, Inc. who are independent of the investment advisor to the
Trust and make a market in the security, at least one of which shall be in
writing. Futures contracts and options are valued at closing prices for such
instruments established by the exchange or board of trade on which they are
traded, or if market quotations are not readily available, are valued at fair
value on a consistent basis using methods determined in good faith by the
Trustees.

     "Maximum Potential Gross-up Payment Liability," as of any Valuation Date,
shall mean the aggregate amount of Gross-up Payments that would be due if the
Trust were to make Taxable Allocations, with respect to any taxable year,
estimated based upon dividends paid and the amount of undistributed realized net
capital gains and other taxable income earned by the Trust, as of the end of the
calendar month immediately preceding such Valuation Date, and assuming such
Gross-up Payments are fully taxable.

     "Maximum Rate," for shares of a series of Municipal Preferred on any
Auction Date for shares of such series, shall mean:

          (i) in the case of any Auction Date which is not the Auction Date
     immediately prior to the first day of any proposed Special Rate Period
     designated by the Trust pursuant to paragraph 4 of Part I of this Section
     12.1, the product of (A) the Reference Rate on such Auction Date for the
     next Rate Period of shares of such series and (B) the Rate Multiple on such
     Auction Date, unless shares of such series have or had a Special Rate
     Period (other than a Special Rate Period of 28 Rate Period Days or fewer)
     and an Auction

                                      -13-

<PAGE>   14


     at which Sufficient Clearing Bids existed has not yet occurred for a
     Minimum Rate Period of shares of such series after such Special Rate
     Period, in which case the higher of:

               (A) the dividend rate on shares of such series for the
          then-ending Rate Period; and

               (B) the product of (1) the higher of (x) the Reference Rate on
          such Auction Date for a Rate Period equal in length to the then-ending
          Rate Period of shares of such series, if such then-ending Rate Period
          was 364 Rate Period Days or fewer, or the Treasury Note Rate on such
          Auction Date for a Rate Period equal in length to the then-ending Rate
          Period of shares of such series, if such then-ending Rate Period was
          more than 364 Rate Period Days, and (y) the Reference Rate on such
          Auction Date for a Rate Period equal in length to such Special Rate
          Period of shares of such series, if such Special Rate Period was 364
          Rate Period Days or fewer, or the Treasury Note Rate on such Auction
          Date for a Rate Period equal in length to such Special Rate Period, if
          such Special Rate Period was more than 364 Rate Period Days and (2)
          the Rate Multiple on such Auction Date; or

          (ii) in the case of any Auction Date which is the Auction Date
     immediately prior to the first day of any proposed Special Rate Period
     designated by the Trust pursuant to paragraph 4 of Part I of this Section
     12.1, the product of (A) the highest of (1) the Reference Rate on such
     Auction Date for a Rate Period equal in length to the then-ending Rate
     Period of shares of such series, if such then-ending Rate Period was 364
     Rate Period Days or fewer, or the Treasury Note Rate on such Auction Date
     for a Rate Period equal in length to the then-ending Rate Period of shares
     of such series, if such then-ending Rate Period was more than 364 Rate
     Period Days, (2) the Reference Rate on such Auction Date for the Special
     Rate Period for which the Auction is being held if such Special Rate Period
     is 364 Rate Period Days or fewer or the Treasury Note Rate on such Auction
     Date for the Special Rate Period for which the Auction is being held if
     such Special Rate Period is more than 364 Rate Period Days, and (3) the
     Reference Rate on such Auction Date for Minimum Rate Periods and (B) the
     Rate Multiple on such Auction Date.

     "Minimum Rate Period" shall mean any Rate Period consisting of 7 Rate
Period Days.

     "Moody's" shall mean Moody's Investors Service, Inc., a Delaware
corporation, and its successors.

     "Moody's Discount Factor" shall mean, for purposes of determining the
Discounted Value of any Moody's Eligible Asset, the percentage determined by
reference to the rating on such asset and the shortest Exposure Period set forth
opposite such rating that is the same length as or is longer than the Moody's
Exposure Period, in accordance with the table set forth below:

                                      -14-

<PAGE>   15

<TABLE>
<CAPTION>
                                                                      RATING CATEGORY
                                   --------------------------------------------------------------------------------------------

EXPOSURE PERIOD                    AAA*        AA*         A*       BAA*      OTHER**    (V)MIG-1***    SP-1+****  UNRATED*****
- ---------------                    ----        ---         --       ----      -------    -----------    ---------  -----------
<C>                                <C>         <C>         <C>      <C>        <C>          <C>         <C>         <C>
7 weeks ..................         151%        159%        166%     173%        187%        136%        148%        225%
8 weeks or less but
greater than seven
weeks ....................         154         161         168      176         190         137         149         231
9 weeks or less but
greater than eight
weeks ....................         156         163         170      177         192         138         150         240
</TABLE>

     *        Moody's rating.
     **       Municipal Obligations not rated by Moody's but rated BBB by S&P.
     ***      Municipal Obligations rated MIG-1 or VMIG-1, which
              do not mature or have a demand feature at par exercisable in
              30 days and which do not have a long-term rating.
     ****     Municipal Obligations not rated by Moody's but
              rated SP-1+ by S&P, which do not mature or have a demand
              feature at par exercisable in 30 days and which do not have a
              long-term rating.
     *****    Municipal Obligations rated less than Baa3 by Moody's or less
              than BBB by S&P or not rated by Moody's or S&P.

     Notwithstanding the foregoing, (i) the Moody's Discount Factor for
short-term Municipal Obligations will be 115%, so long as such Municipal
Obligations are rated at least MIG-1, VMIG-1 or P-1 by Moody's and mature or
have a demand feature at par exercisable in 30 days or less, or 125%, so long as
such Municipal Obligations are rated at least A-1+/AA or SP-1+/AA by S&P and
mature or have a demand feature at par exercisable in 30 days or less, and (ii)
no Moody's Discount Factor will be applied to cash or to Receivables for
Municipal Obligations Sold or futures, options and similar instruments (to the
extent such securities are Moody's Eligible Assets); provided, however, that for
purposes of determining the Moody's Discount Factor applicable to a Municipal
Obligation, any Municipal Obligation (excluding any short-term Municipal
Obligation) not rated by Moody's but rated by S&P shall be deemed to have a
Moody's rating which is one full rating category lower than its S&P rating.

     "Moody's Eligible Asset" shall mean cash, Receivables for Municipal
Obligations Sold, futures, options and similar instruments (other than Inverse
Floaters and index warrants) or a Municipal Obligation that (i) pays interest in
cash, (ii) does not have its Moody's rating, if applicable, suspended by
Moody's, (iii) is part of an issue of Municipal Obligations of at least
$10,000,000, and (iv) is not subject to a covered call or a covered put option
written by the Trust. Municipal Obligations issued by any one issuer and not
rated by Moody's or rated lower than Baa3 by Moody's and not rated by S&P or
rated lower than BBB by S&P ("Unrated Moody's Municipal Obligations") may
comprise no more than 4% of total Moody's Eligible Assets; such Unrated Moody's
Municipal Obligations, if any, together with any Municipal Obligations issued by
the same issuer and rated BBB by S&P may comprise no more than 4% of total
Moody's Eligible Assets; such BBB-rated Municipal Obligations and Unrated
Moody's Municipal Obligations, if any, together with any Municipal Obligations
issued

                                      -15-

<PAGE>   16


by the same issuer and rated Baa by Moody's or A by S&P may comprise no more
than 6% of total Moody's Eligible Assets; such BBB, Baa and A-rated Municipal
Obligations and Unrated Moody's Municipal Obligations, if any, together with any
Municipal Obligations issued by the same issuer and rated A by Moody's or AA by
S&P, may comprise no more than 10% of total Moody's Eligible Assets; and such
BBB, Baa, A and AA-rated Municipal Obligations and Unrated Moody's Municipal
Obligations, if any, together with any Municipal Obligations issued by the same
issuer and rated Aa by Moody's or AAA by S&P, may comprise no more than 20% of
total Moody's Eligible Assets. For purposes of the foregoing sentence, any
Municipal Obligation backed by the guaranty, letter of credit or insurance
issued by a third party shall be deemed to be issued by such third party if the
issuance of such third-party credit is the sole determinant of the rating on
such Municipal Obligations. Municipal Obligations issued by issuers located
within a single state or territory and not rated by Moody's or rated lower than
Baa3 by Moody's and not rated by S&P or rated lower than BBB by S&P may comprise
no more than 12% of total Moody's Eligible Assets; such Unrated Moody's
Municipal Obligations, if any, together with any Municipal Obligations issued by
issuers located within the same state or territory and rated BBB by S&P may
comprise no more than 12% of total Moody's Eligible Assets; such BBB-rated
Municipal Obligations and Unrated Moody's Municipal Obligations, if any,
together with any Municipal Obligations issued by issuers located within the
same state or territory and rated Baa by Moody's or A by S&P, may comprise no
more than 20% of total Moody's Eligible Assets; such BBB, Baa and A-rated
Municipal Obligations and Unrated Moody's Municipal Obligations, if any,
together with any Municipal Obligations issued by issuers located within the
same state or territory and rated A by Moody's or AA by S&P, may comprise no
more than 40% of total Moody's Eligible Assets; and such BBB, Baa, A and
AA-rated Municipal Obligations and Unrated Moody's Municipal Obligations, if
any, together with any Municipal Obligations issued by issuers located within
the same state or territory and rated Aa by Moody's or AAA by S&P, may comprise
no more than 60% of total Moody's Eligible Assets. Municipal Obligations which
are not rated by Moody's or S&P may comprise no more than 40% of the aggregate
Market Value of Moody's Eligible Assets; provided, however, that if the Market
Value of such Municipal Obligations exceeds 40% of the aggregate Market Value of
Moody's Eligible Assets, a portion of such Municipal Obligations (selected by
the Trust) shall not be considered Moody's Eligible Assets, so that the Market
Value of such Municipal Obligations (excluding such portion) does not exceed 40%
of the aggregate Market Value of Moody's Eligible Assets; provided, however,
that no such unrated Municipal Obligation shall be considered a Moody's Eligible
Asset if such Municipal Obligation shall be in "default", which term shall mean
for purposes of this definition, either (a) the nonpayment by the issuer of
interest or principal when due or (b) the notification of the Trust by the
trustee under the underlying indenture or other governing instrument for such
Municipal Obligation that the issuer will fail to pay when due principal or
interest on such Municipal Obligation. For purposes of applying the foregoing
requirements, a Municipal Obligation shall be deemed to be rated BBB by S&P if
rated BBB-, BBB or BBB+ by S&P, Moody's Eligible Assets shall be calculated
without including cash, and Municipal Obligations rated MIG-1, VMIG-1 or P-1 or,
if not rated by Moody's, rated A-1+/Aa


                                      -16-
<PAGE>   17


or SP-1+/AA by S&P, shall be considered to have a long-term rating of A. When
the Trust sells a Municipal Obligation and agrees to repurchase such Municipal
Obligation at a future day, such Municipal Obligation shall be valued at its
Discounted Value for purposes of determining Moody's Eligible Assets, and the
amount of the repurchase price of such Municipal Obligation shall be included as
a liability for purposes of calculating the Municipal Preferred Basic
Maintenance Amount. When the Trust purchases a Moody's Eligible Asset and agrees
to sell it at a future date, such Eligible Asset shall be valued at the amount
of cash to be received by the Trust upon such future date, provided that the
counterparty to the transaction has a long-term debt rating of at least A2 and a
short-term debt rating of at least P1 from Moody's and the transaction has a
term of no more than 30 days; otherwise such Eligible Asset shall be valued at
the Discounted Value of such Eligible Asset. For purposes of determining the
aggregate Discounted Value of Moody's Eligible Assets, such aggregate amount
shall be reduced with respect to any futures contracts as set forth in paragraph
10(a) of Part I of this Section 12.1.

     Notwithstanding the foregoing, an asset will not be considered a Moody's
Eligible Asset to the extent it is (i) subject to any material lien, mortgage,
pledge, security interest or security agreement of any kind (collectively,
"Liens"), except for (a) Liens which are being contested in good faith by
appropriate proceedings and which Moody's has indicated to the Trust will not
affect the status of such asset as a Moody's Eligible Asset, (b) Liens for taxes
that are not then due and payable or that can be paid thereafter without
penalty, (c) Liens to secure payment for services rendered or cash advanced to
the Trust by Colonial Management Associates, Inc., The Chase Manhattan Bank or
the Auction Agent and (d) Liens by virtue of any repurchase agreement or futures
contract; or (ii) deposited irrevocably for the payment of any liabilities for
purposes of determine the Municipal Preferred Basic Maintenance Amount.

     "Moody's Exposure Period" shall mean the period commencing on a given
Valuation Date and ending 49 days thereafter.

     "Moody's Volatility Factor" shall mean, as of any Valuation Date, (i) in
the case of any Minimum Rate Period, any Special Rate period of 28 Rate Period
Days or fewer, or any Special Rate Period of 57 Rate Period Days or more, a
multiplicative factor equal to 275%, except as otherwise provided in the last
sentence of this definition; (ii) in the case of any Special Rate Period of more
than 28 but fewer than 36 Rate Period Days, a multiplicative factor equal to
203%; (iii) in the case of any Special Rate Period of more than 35 but fewer
than 43 Rate Period Days, a multiplicative factor equal to 217%; (iv) in the
case of any Special Rate Period of more than 42 but fewer than 50 Rate Period
Days, a multiplicative factor equal to 226%; and (v) in the case of any Special
Rate Period of more than 49 but fewer than 57 Rate Period Days, a multiplicative
factor equal to 235%. If, as a result of the enactment of changes to the Code,
the greater of the maximum marginal Federal individual income tax rate
applicable to ordinary income and the maximum marginal Federal corporate income
tax rate applicable to ordinary income will increase, such increase being
rounded up to the next five percentage points (the "Federal Tax Rate Increase"),
until the effective date of such increase, the Moody's Volatility Factor in the
case of any Rate Period described in (i) above in this definition instead shall
be determined by reference to the following table:

                                      -17-
<PAGE>   18

<TABLE>
<CAPTION>
                         FEDERAL                    VOLATILITY
                    TAX RATE INCREASE                 FACTOR

                           <S>                         <C>
                           5%                          295%
                          10%                          317%
                          15%                          341%
                          20%                          369%
                          25%                          400%
                          30%                          436%
                          35%                          477%
                          40%                          525%
</TABLE>

     "Municipal Obligations" shall mean "Municipal Obligations" as defined in
the Trust's registration statement on Form N-2 as filed with the Securities and
Exchange Commission on August 20, 1999 (the "Registration Statement").

     "Municipal Preferred" shall mean Municipal Auction Rate Cumulative
Preferred Shares, without par value, liquidation preference $25,000 per share,
of the Trust.

     "Municipal Preferred Basic Maintenance Amount," as of any Valuation Date,
shall mean the dollar amount equal to the sum of (i) (A) the product of the
number of shares of Municipal Preferred outstanding on such date multiplied by
$25,000 (plus the product of the number of shares of any other series of
Preferred Shares outstanding on such date multiplied by the liquidation
preference of such shares), plus any redemption premium applicable to shares of
Municipal Preferred (or other Preferred Shares) then subject to redemption; (B)
the aggregate amount of dividends that will have accumulated at the respective
Applicable Rates (whether or not earned or declared) to (but not including) the
first respective Dividend Payment Dates for shares of Municipal Preferred
outstanding that follow such Valuation Date (plus the aggregate amount of
dividends, whether or not earned or declared, that will have accumulated in
respect of other outstanding Preferred Shares to, but not including, the first
respective dividend payment dates for such other shares that follow such
Valuation Date); (C) the aggregate amount of dividends that would accumulate on
shares of each series of Municipal Preferred outstanding from such first
respective Dividend Payment Date therefor through the 49th day after such
Valuation Date, at the Maximum Rate (calculated as if such Valuation Date were
the Auction Date for the Rate Period commencing on such Dividend Payment Date)
for a Minimum Rate Period of shares of such series to commence on such Dividend
Payment Date, assuming, solely for purposes of the foregoing, that if on such
Valuation Date the Trust shall have delivered a Notice of Special Rate Period to
the Auction Agent pursuant to paragraph 4(d)(i) of Part I of this Section 12.1
with respect to shares of such series, such Maximum Rate shall be the higher of
(a) the Maximum Rate for the Special Rate Period of shares of such series to
commence on such Dividend Payment Date and (b) the Maximum Rate for a Minimum
Rate Period of shares of such series to commence on such Dividend Payment Date,
multiplied by the Volatility Factor applicable to a Minimum Rate Period, or, in
the event the Trust shall have delivered a Notice of Special Rate Period to the

                                      -18-

<PAGE>   19



Auction Agent pursuant to paragraph 4(d)(i) of Part I of this Section 12.1 with
respect to shares of such series designating a Special Rate Period consisting of
49 Rate Period Days or more, the Volatility Factor applicable to a Special Rate
Period of that length (plus the aggregate amount of dividends that would
accumulate at the maximum dividend rate or rates on any other Preferred Shares
outstanding from such respective dividend payment dates through the 49th day
after such Valuation Date, as established by or pursuant to the respective
statements establishing and fixing the rights and preferences of such other
Preferred Shares) (except that (1) if such Valuation Date occurs at a time when
a Failure to Deposit (or, in the case of Preferred Shares other than Municipal
Preferred, a failure similar to a Failure to Deposit) has occurred that has not
been cured, the dividend for purposes of calculation would accumulate at the
current dividend rate then applicable to the shares in respect of which such
failure has occurred and (2) for those days during the period described in this
subparagraph (C) in respect of which the Applicable Rate in effect immediately
prior to such Dividend Payment Date will remain in effect (or, in the case of
the Preferred Shares other than Municipal Preferred, in respect of which the
dividend rate or rates in effect immediately prior to such respective dividend
payment dates will remain in effect), the dividend for purposes of calculation
would accumulate at such Applicable Rate (or other rate or rates, as the case
may be) in respect of those days); (D) the amount of anticipated expenses of the
Trust for the 90 days subsequent to such Valuation Date; (E) the amount of the
Trust's Maximum Potential Gross-up Payment Liability in respect of shares of
Municipal Preferred (and similar amounts payable in respect of other Preferred
Shares pursuant to provisions similar to those contained in paragraph 3 of Part
I of this Section 12.1) as of such Valuation Date; and (F) any current
liabilities as of such Valuation Date to the extent not reflected in any of (i)
(A) through (i)(E) (including, without limitation, any payables for Municipal
Obligations purchased as of such Valuation Date and any liabilities incurred for
the purpose of clearing securities transactions) less (ii) the value (i.e., for
purposes of current Moody's guidelines, the face value of cash, short-term
Municipal Obligations rated MIG-1, VMIG-1 or P-1, and short-term securities that
are the direct obligation of the U.S. government, provided in each case that
such securities mature on or prior to the date upon which any of (i) (A) through
(i)(F) become payable, otherwise the Moody's Discounted Value or for purposes of
current S&P guides, the face value of cash, short-term municipal securities
rated "A-1+" or "SP-1+" and mature or have a demand feature exercisable in 30
days or less, and short-term securities that are the direct obligation of the
U.S. government, provided in each case that such securities mature on or prior
to the date upon which any of (i)(A) through (i)(F) become payable, otherwise
S&P's Discounted Value) of any of the Trust's assets irrevocably deposited by
the Trust for the payment of any of (i) (A) through (i)(F).

     "Municipal Preferred Basic Maintenance Cure Date," with respect to the
failure by the Trust to satisfy the Municipal Preferred Basic Maintenance Amount
(as required by paragraph 7(a) of Part I of this Section 12.1) as a given
Valuation Date, shall mean the second Business Day following such Valuation
Date.

     "Municipal Preferred Basic Maintenance Report" shall mean a report signed
by the President, Treasurer, Controller, Secretary or any Senior Vice President
or Vice President of the Trust which sets forth, as of the related Valuation
Date, the assets of the Trust, the Market Value


                                      -19-

<PAGE>   20

and the Discounted Value thereof (seriatim and in aggregate), and the Municipal
Preferred Basic Maintenance Amount.

     "1940 Act" shall mean the Investment Company Act of 1940, as amended from
time to time.

     "1940 Act Cure Date," with respect to the failure by the Trust to maintain
the 1940 Act Municipal Preferred Asset Coverage (as required by paragraph 7 of
Part I of this Section 12.1) as of the last Business Day of each month, shall
mean the last Business Day of the following month.

     "1940 Act Municipal Preferred Asset Coverage" shall mean asset coverage, as
defined in Section 18(h) of the 1940 Act, of at least 200% with respect to all
outstanding senior securities of the Trust which are shares of beneficial
interest, including all outstanding shares of Municipal Preferred (or such other
asset coverage as may in the future be specified in or under the 1940 Act as the
minimum asset coverage for senior securities which are shares or stock of a
closed-end investment company as a condition of declaring dividends on its
common shares or stock).

     "Notice of Redemption" shall mean any notice with respect to the redemption
of shares of Municipal Preferred pursuant to paragraph 11(c) of Part I of this
Section 12.1.

     "Notice of Special Rate Period" shall mean any notice with respect to a
Special Rate Period of shares of Municipal Preferred pursuant to paragraph
4(d)(i) of Part I of this Section 12.1.

     "Order" and "Orders" shall have the respective meanings specified in
paragraph 1(a) of Part II of this Section 12.1.

     "Outstanding" shall mean, as of any Auction Date with respect to shares of
any series of Municipal Preferred, the number of shares of such series
theretofore issued by the Trust except, without duplication, (i) any shares of
such series theretofore canceled or delivered to the Auction Agent for
cancellation or redeemed by the Trust, (ii) any shares of such series as to
which the Trust or any Affiliate thereof shall be an Existing Holder and (iii)
any shares of such series represented by any certificate in lieu of which a new
certificate has been executed and delivered by the Trust.

     "Persons" shall mean and include an individual, a partnership, a
corporation, a trust, an unincorporated association, a joint venture or other
entity or a government or any agency or political subdivision thereof.

     "Potential Beneficial Owner," with respect to shares of a series of
Municipal Preferred, shall mean a customer of a Broker-Dealer that is not a
Beneficial Owner of shares of such series but that wishes to purchase shares of
such series, or that is a Beneficial Owner of shares of such series that wishes
to purchase additional shares of such series.


                                      -20-

<PAGE>   21

     "Potential Holder," with respect to shares of a series of Municipal
Preferred, shall mean a Broker-Dealer (or any such other person as may be
permitted by the Trust) that is not an Existing Holder of shares of such series
or that is an Existing Holder of shares of such series that wishes to become the
Existing Holder of additional shares of such series.

     "Preferred Shares" shall mean the preferred shares, without par value, of
the Trust, and includes the shares of Municipal Preferred.

     "Quarterly Valuation Date" shall mean the last Business Day of each March,
June, September and December of each year, commencing on September 30, 1999 with
respect to Series M Municipal Preferred.

     "Rate Multiple," for shares of a series of Municipal Preferred on any
Auction Date for shares of such series, shall mean the percentage, determined as
set forth below, based on the prevailing rating of shares of such series in
effect at the close of business on the Business Day next preceding such Auction
Date:
<TABLE>
<CAPTION>
         PREVAILING RATING                                 PERCENTAGE
         -----------------                                 ----------
         <S>                                                 <C>
         "aa3"/AA- or higher.................................110%
         "a3"/A-.............................................125%
         "baa3"/BBB-.........................................150%
         "ba3"/BB-...........................................200%
         Below "ba3"/BB-.....................................250%
</TABLE>

provided, however, that in the event the Trust has notified the Auction Agent of
its intent to allocate income taxable for Federal income tax purposes to shares
of such series prior to the Auction establishing the Applicable Rate for shares
of such series, the applicable percentage in the foregoing table shall be
divided by the quantity 1 minus the greater of the maximum marginal regular
Federal individual income tax rate applicable to ordinary income or the maximum
marginal regular Federal corporate income tax rate applicable to ordinary
income.

     For purposes of this definition, the "prevailing rating" of shares of a
series of Municipal Preferred shall be (i) "aa3"/AA- or higher if such shares
have a rating of "aa3" or better by Moody's and AA- or better by S&P or the
equivalent of such ratings by such agencies or a substitute rating agency or
substitute rating agencies selected as provided below, (ii) if not "aa3"/AA- or
higher, then "a3"/A- if such shares have a rating of "a3" or better by Moody's
and A- or better by S&P or the equivalent of such ratings by such agencies or a
substitute rating agency or substitute rating agencies selected as provided
below, (iii) if not "aa3"/AA- or higher or "a3"/A-, then "baa3"/BBB- if such
shares have a rating of "baa3" or better by Moody's and BBB- or better by S&P or
the equivalent of such ratings by such agencies or a substitute rating

                                      -21-

<PAGE>   22

agency or substitute rating agencies selected as provided below, (iv) if not
"aa3"/AA- or higher, "a3"/A- or "baa3"/BBB-, then "ba3"/BB- if such shares have
a rating of "ba3" or better by Moody's and BB- or better by S&P or the
equivalent of such ratings by such agencies or a substitute rating agency or
substitute rating agencies selected as provided below, and (v) if not "aa3"/AA-
or higher, "a3"/A-, "baa3"/BBB-, or "ba3"/BB-, then below "ba3"/BB-; provided,
however, that if such shares are rated by only one rating agency, the prevailing
rating will be determined without reference to the rating of any other rating
agency. The Trust shall take all reasonable action necessary to enable either
S&P or Moody's to provide a rating for shares of Municipal Preferred. If neither
S&P nor Moody's shall make such a rating available, Salomon Smith Barney Inc. or
its successor shall select at least one nationally recognized statistical rating
organization (as that term is used in the rules and regulations of the
Securities and Exchange Commission under the Securities Exchange Act of 1934, as
amended from time to time) to act as a substitute rating agency in respect of
shares of such series of Municipal Preferred, and the Trust shall take all
reasonable action to enable such rating agency to provide a rating for such
shares.

     "Rate Period," with respect to shares of a series of Municipal Preferred,
shall mean the Initial Rate Period of shares of such series and any Subsequent
Rate Period, including any Special Rate Period, of shares of such series.

     "Rate Period Days," for any Rate Period or Dividend Period, means the
number of days that would constitute such Rate Period or Dividend Period but for
the application of paragraph 2(d) of Part I of this Section 12.1 or paragraph
4(b) of Part I of this Section 12.1.

     "Receivables for Municipal Obligations Sold" shall mean (A) for purposes of
calculating Moody's Eligible Assets as of any Valuation Date, no more than the
aggregate of the following: (i) the book value of receivables for Municipal
Obligations sold as of or prior to such Valuation Date if such receivables are
due within five business days of such Valuation Date, and if the trades which
generated such receivables are (x) settled through clearing house firms with
respect to which the Trust has received prior written authorization from Moody's
or (y) with counterparties having a Moody's long-term debt rating of at least
Baa3; and (ii) the Moody's Discounted Value of Municipal Obligations sold as of
or prior to such Valuation Date which generated receivables, if such receivables
are due within five business days of such Valuation Date but do not comply with
either of the conditions specified in (i) above, and (B) for purposes of
calculating S&P Eligible Assets as of any Valuation Date, the book value of
receivables for Municipal Obligations sold as of or prior to such Valuation Date
if such receivables are due within five business days of such Valuation Date.

     "Redemption Price" shall mean the applicable redemption price specified in
paragraph 11(a) or (b) of Part I of this Section 12.1.

     "Reference Rate" shall mean (i) the higher of the Taxable Equivalent of the
Short-Term Municipal Bond Rate and the "AA" Composite Commercial Paper Rate in
the case of Minimum Rate Periods and Special Rate Periods of 28 Rate Period Days
or fewer; (ii) the "AA" Composite Commercial Paper Rate in the case of Special
Rate Periods of more than 28 Rate Period Days but fewer than 183 Rate Period
Days; and (iii) the Treasury Bill Rate in the case of Special Rate Periods of
more than 182 Rate Period Days but fewer than 365 Rate Period Days.

                                      -22-

<PAGE>   23

     "Registration Statement" has the meaning specified in the definition of
"Municipal Obligations."

     "S&P" means Standard & Poor's Ratings Services, a division of The
McGraw-Hill Companies, Inc., and its successors.

     "S&P Discount Factor" shall mean, for purposes of determining the
Discounted Value of any S&P Eligible Asset, the percentage determined by
reference to the rating on such asset and the shortest S&P Exposure Period set
forth opposite such rating that is the same length as or is longer than the S&P
Exposure Period, in accordance with the table set forth below:
<TABLE>
<CAPTION>
                                                                                     RATING CATEGORY
                                                              ----------------------------------------------------
EXPOSURE PERIOD                                               AAA*     AA*      A*     BBB*    UNRATED**  ZEROS***
- ---------------                                               ----     ---      ---    ----    ---------  --------

<C>                                                           <C>      <C>      <C>    <C>       <C>      <C>
45 Business Days..........................................    190%     195%     210%   250%      220%     572%
25 Business Days..........................................    170      175      190    230       220      496
10 Business Days..........................................    155      160      175    215       220      426
  7 Business Days.........................................    150      155      170    210       220      411
  3 Business Days.........................................    130      135      150    190       220      388
</TABLE>
- --------------
*    S&P rating.

**   S&P Eligible Assets not rated by S&P or rated less than BBB by S&P and not
     rated at least the equivalent of an "A" rating by another nationally
     recognized credit rating agency.

***  Municipal Obligations rated AAA by S&P which are not interest bearing or do
     not pay interest at least semi-annually.

     Notwithstanding the foregoing, (i) the S&P Discount Factor for short-term
Municipal Obligations will be 115%, so long as such Municipal Obligations are
rated A-1+ or SP-1+ by S&P and mature or have a demand feature exercisable
within 30 days or less, 120% if such Municipal Obligations are rated A-1 or
SP-1- by S&P and mature or have a demand feature exercisable within 30 days or
less, or 125% if such Municipal Obligations are not rated by S&P but are rated
VMIG-1, P-1 or MIG-1 by Moody's; provided, however, that any such Moody's-rated
short-term Municipal Obligations which have demand features exercisable within
30 days or less must be backed by a letter of credit, liquidity facility or
guarantee from a bank or other financial institution with a short-term rating of
at least A-1+ from S&P; and further provided that such Moody's-rated short-term
Municipal Obligations may comprise no more than 50% of short-term Municipal
Obligations that qualify as S&P Eligible Assets; (ii) no S&P Discount Factor
will be applied to cash, options and similar instruments or to Receivables for
Municipal Obligations Sold, except that S&P Discount Factors will be applied to
futures and Inverse Floaters; and (iii) except as set forth in clause (i) above,
in the case of any Municipal Obligation that is not rated by S&P but qualifies
as an S&P Eligible Asset pursuant to clause (iii) of that definition, such
Municipal Obligation will be deemed to have an S&P rating one full rating
category lower than the S&P rating category that is the equivalent of the rating
category in which such Municipal Obligation is placed by such other nationally
recognized credit rating agency. For purposes of the foregoing, Anticipation
Notes rated SP-1+ or, if not rated by S&P, rated MIG-1 or VMIG-1 by


                                      -23-

<PAGE>   24


Moody's, which do not mature or have a demand feature at par exercisable in 30
days and which do not have a long-term rating, shall be considered to be
short-term Municipal Obligations.

     "S&P Eligible Asset" shall mean cash (excluding any cash irrevocably
deposited by the Trust for the payment of any liabilities within the meaning of
Municipal Preferred Basic Maintenance Amount), Receivables for Municipal
Obligations Sold, futures, options, Inverse Floaters and similar instruments or
a Municipal Obligation owned by the Trust that (i) is interest bearing and pays
interest at least semi-annually; (ii) is payable with respect to principal and
interest in U.S. Dollars; (iii) is publicly rated BBB or higher by S&P or,
except in the case of Anticipation Notes that are Grant Anticipation Notes or
Bond Anticipation Notes which must be rated by S&P to be included in S&P
Eligible Assets, if not rated by S&P but rated by another nationally recognized
credit rating agency, is rated at least A by such agency; (iv) is not part of a
private placement of Municipal Obligations (except in the case of Inverse
Floaters); (v) is part of an issue of Municipal Obligations with an original
issue size of at least $20 million or, if of an issue with an original issue
size below $20 million (but in no event below $10 million), is issued by an
issuer with a total of at least $50 million of securities outstanding; and (vi)
is not subject to a covered call or covered put option written by the Trust.
Solely for purposes of this definition, the term "Municipal Obligation" means
any obligation the interest on which is exempt from regular Federal income
taxation and which is issued by any of the fifty United States, the District of
Columbia or any of the territories of the United States, their subdivisions,
counties, cities, towns, villages, school districts and agencies (including
authorities and special districts created by the states), and federally
sponsored agencies such as local housing authorities. Notwithstanding the
foregoing limitations:

          (1) Municipal Obligations (excluding Escrowed Bonds) of any one issuer
     or guarantor (excluding bond insurers) shall be considered S&P Eligible
     Assets only to the extent the Market Value of such Municipal Obligations
     does not exceed 10% of the aggregate Market Value of S&P Eligible Assets,
     provided that 2% is added to the applicable S&P Discount Factor for every
     1% by which the Market Value of such Municipal Obligations exceeds 5% of
     the aggregate Market Value of S&P Eligible Assets, and provided that
     Municipal Obligations (excluding Escrowed Bonds) not rated by S&P or rated
     less than BBB by S&P or not rated at least A by another nationally
     recognized credit rating agency of any one issuer or guarantor (excluding
     bond insurers) shall constitute S&P Eligible Assets only to the extent the
     Market Value of such Municipal Obligations does not exceed 5% of the
     aggregate Market Value of S&P Eligible Assets;

          (2) Municipal Obligations not rated at least BBB by S&P or not rated
     by S&P or not rated at least A by another nationally recognized credit
     rating agency shall be considered S&P Eligible Assets only to the extent
     the Market Value of such Municipal Obligations does not exceed 50% of the
     aggregate Market Value of S&P Eligible Assets; provided, however, that if
     the Market Value of such Municipal Obligations exceeds 50% of the aggregate
     Market Value of S&P Eligible Assets, a portion of such Municipal
     Obligations (selected by the Trust) shall not be considered S&P Eligible
     Assets, so that the

                                      -24-

<PAGE>   25


     Market Value of such Municipal Obligations (excluding such portion) does
     not exceed 50% of the aggregate Market Value of S&P Eligible Assets;

          (3) Long-term Municipal Obligations (excluding Escrowed Bonds) issued
     by issuers in any one state or territory shall be considered S&P Eligible
     Assets only to the extent that the Market Value of such Municipal
     Obligations does not exceed 25% of the aggregate Market Value of S&P
     Eligible Assets; and

          (4) Municipal Obligations which are not interest bearing or do not pay
     interest at least semi-annually shall be considered S&P Eligible Assets if
     rated AAA by S&P.

     For purposes of determining the aggregate Discounted Value of S&P's
Eligible Assets, such aggregate amount shall be reduced with respect to any
futures contracts as set forth in paragraph 10(a) of Part I of this Section
12.1.

     "S&P Exposure Period" shall mean the period commencing on a given Valuation
Date and ending three business days thereafter.

     "S&P Volatility Factor" shall mean, as of any Valuation Date, a
multiplicative factor equal to (i) 305% in the case of any Minimum Rate Period
or any Special Rate Period of 28 Rate Period Days or fewer; (ii) 268% in the
case of any Special Rate Period of more than 28 Rate Period Days but fewer than
183 Rate Period Days; and (iii) 204% in the case of any Special Rate Period of
more than 182 Rate Period Days.

     "Securities Depository" shall mean The Depository Trust Company and its
successors and assigns or any other securities depository selected by the Trust
which agrees to follow the procedures required to be followed by such securities
depository in connection with shares of Municipal Preferred.

     "Sell Order" and "Sell Orders" shall have the respective meanings specified
in paragraph 1(a) of Part II of this Section 12.1.

     "Special Rate Period," with respect to shares of a series of Municipal
Preferred, shall have the meaning specified in paragraph 4(a) of Part I of this
Section 12.1.

     "Special Redemption Provisions" shall have the meaning specified in
paragraph 11(a)(i) of Part I of this Section 12.1.

     "Submission Deadline" shall mean 1:30 P.M., New York City time, on any
Auction Date or such other time on any Auction Date by which Broker-Dealers are
required to submit Orders to the Auction Agent as specified by the Auction Agent
from time to time.

                                      -25-

<PAGE>   26

     "Submitted Bid" and "Submitted Bids" shall have the respective meanings
specified in paragraph 3(a) of Part II of this Section 12.1.

     "Submitted Hold Order" and "Submitted Hold Orders" shall have the
respective meanings specified in paragraph 3(a) of Part II of this Section 12.1.

     "Submitted Order" and "Submitted Orders" shall have the respective meanings
specified in paragraph 3(a) of Part II of this Section 12.1.

     "Submitted Sell Order" and "Submitted Sell Orders" shall have the
respective meanings specified in paragraph 3(a) of Part II of this Section 12.1.

     "Subsequent Rate Period," with respect to shares of a series of Municipal
Preferred, shall mean the period from and including the first day following the
Initial Rate Period of shares of such series to but excluding the next Dividend
Payment Date for shares of such series and any period thereafter from and
including one Dividend Payment Date for shares of such series to but excluding
the next succeeding Dividend Payment Date for shares of such series; provided,
however, that if any Subsequent Rate Period is also a Special Rate Period, such
term shall mean the period commencing on the first day of such Special Rate
Period and ending on the last day of the last Dividend Period thereof.

     "Substitute Commercial Paper Dealer" shall mean CS First Boston or Morgan
Stanley & Co. Incorporated or their respective affiliates or successors, if such
entity is a commercial paper dealer; provided, however, that none of such
entities shall be a Commercial Paper Dealer.

     "Substitute U.S. Government Securities Dealer" shall mean CS First Boston
and Merrill Lynch, Pierce, Fenner & Smith Incorporated or their respective
affiliates or successors, if such entity is a U.S. Government securities dealer;
provided, however, that none of such entities shall be a U.S. Government
Securities Dealer.

     "Sufficient Clearing Bids" shall have the meaning specified in paragraph
3(a) of Part II of this Section 12.1.

     "Taxable Allocation" shall have the meaning specified in paragraph 3 of
Part I of this Section 12.1.

     "Taxable Equivalent of the Short-Term Municipal Bond Rate," on any date for
any Minimum Rate Period or Special Rate Period of 28 Rate Period Days or fewer,
shall mean 90% of the quotient of (A) the per annum rate expressed on an
interest equivalent basis equal to the S&P Kenny 30 day High Grade Index or any
successor index (the "Kenny Index") (provided, however, that any such successor
index must be approved by Moody's (if Moody's is then rating the shares of
Municipal Preferred) and S&P (if S&P is then rating the shares of Municipal
Preferred)), made available for the Business Day immediately preceding such date
but in any event not later than

                                      -26-

<PAGE>   27


8:30 A.M., New York City time, on such date by S&P J.J. Kenny Evaluation
Services or any successor thereto, based upon 30-day yield evaluations at par of
short-term bonds the interest on which is excludable for regular Federal income
tax purposes under the Code, of "high grade" component issuers selected by S&P
J.J. Kenny Evaluation Services or any such successor from time to time in its
discretion, which component issuers shall include, without limitation, issuers
of general obligation bonds, but shall exclude any bonds the interest on which
constitutes an item of tax preference under Section 57(a)(5) of the Code, or
successor provisions, for purposes of the "alternative minimum tax," divided by
(B) 1.00 minus the greater of the maximum marginal regular Federal individual
income tax rate applicable to ordinary income or the maximum marginal regular
Federal corporate income tax rate applicable to ordinary income (in each case
expressed as a decimal); provided, however, that if the Kenny Index is not made
so available by 8:30 A.M., New York City time, on such date by S&P J.J. Kenny
Evaluation Services or any successor, the Taxable Equivalent of the Short-Term
Municipal Bond Rate shall mean the quotient of (A) the per annum rate expressed
on an interest equivalent basis equal to the most recent Kenny Index so made
available for any preceding Business Day, divided by (B) 1.00 minus the greater
of the maximum marginal regular Federal individual income tax rate applicable to
ordinary income or the maximum marginal regular Federal corporate income tax
rate applicable to ordinary income (in each case expressed as a decimal).

     "Taxable Income" shall have the meaning specified in paragraph 3(c) of Part
II of this Section 12.1.

     "Treasury Bill" shall mean a direct obligation of the U.S. Government
having a maturity at the time of issuance of 364 days or less.

     "Treasury Bill Rate," on any date for any Rate Period, shall mean (i) the
bond equivalent yield, calculated in accordance with prevailing industry
convention, of the rate on the most recently auctioned Treasury Bill with a
remaining maturity closest to the length of such Rate Period, as quoted in The
Wall Street Journal on such date for the Business Day next preceding such date;
or (ii) in the event that any such rate is not published in The Wall Street
Journal, then the bond equivalent yield, calculated in accordance with
prevailing industry convention, as calculated by reference to the arithmetic
average of the bid price quotations of the most recently auctioned Treasury Bill
with a remaining maturity closest to the length of such Rate Period, as
determined by bid price quotations as of the close of business on the Business
Day immediately preceding such date obtained from the U.S. Government Securities
Dealers to the Auction Agent.

     "Treasury Note" shall mean a direct obligation of the U.S. Government
having a maturity at the time of issuance of five years or less but more than
364 days.

     "Treasury Note Rate," on any date for any Rate Period, shall mean (i) the
yield on the most recently auctioned Treasury Note with a remaining maturity
closest to the length of such Rate Period, as quoted in The Wall Street Journal
on such date for the Business Day next preceding such date; or (ii) in the event
that any such rate is not published in The Wall Street


                                      -27-

<PAGE>   28


Journal, then the yield as calculated by reference to the arithmetic average of
the bid price quotations of the most recently auctioned Treasury Note with a
remaining maturity closest to the length of such Rate Period, as determined by
bid price quotations as of the close of business on the Business Day immediately
preceding such date obtained from the U.S. Government Securities Dealers to the
Auction Agent. If any U.S. Government Securities Dealer does not quote a rate
required to determine the Treasury Bill Rate or the Treasury Note Rate, the
Treasury Bill Rate or the Treasury Note Rate shall be determined on the basis of
the quotation or quotations furnished by the remaining U.S. Government
Securities Dealer or U.S. Government Securities Dealers and any Substitute U.S.
Government Securities Dealers selected by the Trust to provide such rate or
rates not being supplied by any U.S. Government Securities Dealer or U.S.
Government Securities Dealers, as the case may be, or, if the Trust does not
select any such Substitute U.S. Government Securities Dealer or Substitute U.S.
Government Securities Dealers, by the remaining U.S. Government Securities
Dealer or U.S. Government Securities Dealers.

     "U.S. Government Securities Dealer" shall mean Lehman Government Securities
Incorporated, Goldman, Sachs & Co., Salomon Smith Barney Inc. and Morgan
Guaranty Trust Company of New York or their respective affiliates or successors,
if such entity is a U.S. government securities dealer.

     "Valuation Date" shall mean, for purposes of determining whether the Trust
is maintaining the Municipal Preferred Basic Maintenance Amount, each Business
Day.

     "Variation Margin" means, in connection with an outstanding futures
contract owned or sold by the Trust, the amount of cash or securities paid to or
received from a broker (subsequent to the Initial Margin payment) from time to
time as the price of such futures contract fluctuates.

     "Volatility Factor" shall mean, as of any Valuation Date, the greater of
the Moody's Volatility Factor and the S&P Volatility Factor.

     "Voting Period" shall have the meaning specified in paragraph 5(b) of Part
I of this Section 12.1.

     "Winning Bid Rate" shall have the meaning specified in paragraph 3(a) of
Part II of this Section 12.1.

     2. DIVIDENDS.

     (a) RANKING. The shares of a series of Municipal Preferred shall rank on a
parity with each other, with shares of any other series of Municipal Preferred
and with shares of any other series of Preferred Shares as to the payment of
dividends by the Trust.

                                      -28-

<PAGE>   29


     (b) CUMULATIVE CASH DIVIDENDS. The Holders of shares of Municipal Preferred
of any series shall be entitled to receive, when, as and if declared by the
Board of Trustees, out of funds legally available therefor in accordance with
the Declaration, these By-laws and applicable law, cumulative cash dividends at
the Applicable Rate for shares of such series, determined as set forth in
subparagraph (e) of this paragraph 2, and no more (except to the extent set
forth in paragraph 3 of Part I of this Section 12.1), payable on the Dividend
Payment Dates with respect to shares of such series determined pursuant to
subparagraph (d) of this paragraph 2. Holders of shares of Municipal Preferred
shall not be entitled to any dividend, whether payable in cash, property or
shares, in excess of full cumulative dividends, as herein provided, on shares of
Municipal Preferred. No interest, or sum of money in lieu of interest, shall be
payable in respect of any dividend payment or payments on shares of Municipal
Preferred which may be in arrears, and, except to the extent set forth in
subparagraph (e)(i) of this paragraph 2, no additional sum of money shall be
payable in respect of any such arrearage.

     (c) DIVIDENDS CUMULATIVE FROM DATE OF ORIGINAL ISSUE. Dividends on shares
of Municipal Preferred of any series shall accumulate at the Applicable Rate for
shares of such series from the Date of Original Issue thereof.

     (d) DIVIDEND PAYMENT DATES AND ADJUSTMENTS THEREOF. The Dividend Payment
Dates with respect to shares of a series of Municipal Preferred shall be
Tuesday, __________ __, 1999 and each Tuesday thereafter with respect to shares
of Series M Municipal Preferred; provided, however, that

          (i) (A) if the Tuesday on which dividends would otherwise be payable
     on shares of Series M Municipal Preferred is not a Business Day, then such
     dividends shall be payable on shares of such series on the first Business
     Day that falls after such Tuesday; and

          (ii) notwithstanding the foregoing provisions of this paragraph 2(d),
     the Trust in its discretion may establish the Dividend Payment Dates in
     respect of any Special Rate Period of shares of a series of Municipal
     Preferred consisting of more than 28 Rate Period Days; provided, however,
     that such dates shall be set forth in the Notice of Special Rate Period
     relating to such Special Rate Period, as delivered to the Auction Agent,
     which Notice of Special Rate Period shall be filed with the Secretary of
     the Trust; and further provided that (1) any such Dividend Payment Date
     shall be a Business Day and (2) the last Dividend Payment Date in respect
     of such Special Rate Period shall be the Business Day

                                      -29-

<PAGE>   30


immediately following the last day thereof, as such last day is determined in
accordance with subparagraph (b) of paragraph 4 of Part I of this Section 12.1.

     (e) DIVIDEND RATES AND CALCULATION OF DIVIDENDS.

          (i) DIVIDEND RATES. The dividend rate on shares of Municipal Preferred
     of any series during the period from and after the Date of Original Issue
     of shares of such series to and including the last day of the Initial Rate
     Period of shares of such series shall be equal to the rate per annum set
     forth with respect to shares of such series under "Designation" in Part I
     of this Section 12.1. For each Subsequent Rate Period of shares of such
     series thereafter, the dividend rate on shares of such series shall be
     equal to the rate per annum that results from an Auction for shares of such
     series on the Auction Date next preceding such Subsequent Rate Period;
     provided, however, that if:

               (A) an Auction for any such Subsequent Rate Period is not held
          for any reason other than as described below, the dividend rate on
          shares of such series for such Subsequent Rate Period will be the
          Maximum Rate for shares of such series on the Auction Date therefor;

               (B) any Failure to Deposit shall have occurred with respect to
          shares of such series during any Rate Period thereof (other than any
          Special Rate Period consisting of more than 364 Rate Period Days or
          any Rate Period succeeding any Special Rate Period consisting of more
          than 364 Rate Period Days during which a Failure to Deposit occurred
          that has not been cured), but, prior to 12:00 Noon, New York City
          time, on the third Business Day next succeeding the date on which such
          Failure to Deposit occurred, such Failure to Deposit shall have been
          cured in accordance with subparagraph (f) of this paragraph 2 and the
          Trust shall have paid to the Auction Agent a late charge ("Late
          Charge") equal to the sum of (1) if such Failure to Deposit consisted
          of the failure timely to pay to the Auction Agent the full amount of
          dividends with respect to any Dividend Period of the shares of such
          series, an amount computed by multiplying (x) 200% of the Reference
          Rate for the Rate Period during which such Failure to Deposit occurs
          on the Dividend Payment Date for such Dividend Period by (y) a
          fraction, the numerator of which shall be the number of days for which
          such Failure to Deposit has not been cured in accordance with
          subparagraph (f) of this paragraph 2 (including the day such Failure
          to Deposit occurs and excluding the day such Failure to Deposit is
          cured) and the denominator of which shall be 360, and applying the
          rate obtained against the aggregate Liquidation Preference of the
          outstanding shares of such series and (2) if such Failure to Deposit
          consisted of the failure timely to pay to the Auction Agent the
          Redemption Price of the shares, if any, of such series for which
          Notice of Redemption has been mailed by the Trust pursuant to
          paragraph 11(c) of Part I of this Section 12.1, an amount computed by
          multiplying (x) 200% of the Reference Rate for the Rate Period during
          which such Failure to Deposit occurs

                                      -30-

<PAGE>   31


          on the redemption date by (y) a fraction, the numerator of which shall
          be the number of days for which such Failure to Deposit is not cured
          in accordance with subparagraph (f) of this paragraph 2 (including the
          day such Failure to Deposit occurs and excluding the day such Failure
          to Deposit is cured) and the denominator of which shall be 360, and
          applying the rate obtained against the aggregate Liquidation
          Preference of the outstanding shares of such series to be redeemed, no
          Auction will be held in respect of shares of such series for the
          Subsequent Rate Period thereof and the dividend rate for shares of
          such series for such Subsequent Rate Period will be the Maximum Rate
          for shares of such series on the Auction Date for such Subsequent Rate
          Period;

               (C) any Failure to Deposit shall have occurred with respect to
          shares of such series during any Rate Period thereof (other than any
          Special Rate Period consisting of more than 364 Rate Period Days or
          any Rate Period succeeding any Special Rate Period consisting of more
          than 364 Rate Period Days during which a Failure to Deposit occurred
          that has not been cured), and, prior to 12:00 Noon, New York City
          time, on the third Business Day next succeeding the date on which such
          Failure to Deposit occurred, such Failure to Deposit shall not have
          been cured in accordance with subparagraph (f) of this paragraph 2 or
          the Trust shall not have paid the applicable Late Charge to the
          Auction Agent, no Auction will be held in respect of shares of such
          series for the first Subsequent Rate Period thereof thereafter (or for
          any Rate Period thereof thereafter to and including the Rate Period
          during which (1) such Failure to Deposit is cured in accordance with
          subparagraph (f) of this paragraph 2 and (2) the Trust pays the
          applicable Late Charge to the Auction Agent (the condition set forth
          in this clause (2) to apply only in the event Moody's is rating such
          shares at the time the Trust cures such Failure to Deposit), in each
          case no later than 12:00 Noon, New York City time, on the fourth
          Business Day prior to the end of such Rate Period), and the dividend
          rate for shares of such series for each such Subsequent Rate Period
          shall be a rate per annum equal to the Maximum Rate for shares of such
          series on the Auction Date for such Subsequent Rate Period (but with
          the prevailing rating for shares of such series, for purposes of
          determining such Maximum Rate, being deemed to be "Below 'ba3'/BB-");
          or

               (D) any Failure to Deposit shall have occurred with respect to
          shares of such series during a Special Rate Period thereof consisting
          of more than 364 Rate Period Days, or during any Rate Period thereof
          succeeding any Special Rate Period consisting of more than 364 Rate
          Period Days during which a Failure to Deposit occurred that has not
          been cured, and, prior to 12:00 Noon, New York City time, on the
          fourth Business Day preceding the Auction Date for the Rate Period
          subsequent to such Rate Period, such Failure to Deposit shall not have
          been cured in accordance with subparagraph (f) of this paragraph 2 or,
          in the event Moody's is then rating such shares, the Trust shall not
          have paid the applicable

                                      -31-

<PAGE>   32


          Late Charge to the Auction Agent (such Late Charge, for purposes of
          this subparagraph (D), to be calculated by using, as the Reference
          Rate, the Reference Rate applicable to a Rate Period (x) consisting of
          more than 182 Rate Period Days but fewer than 365 Rate Period Days and
          (y) commencing on the date on which the Rate Period during which
          Failure to Deposit occurs commenced), no Auction will be held in
          respect of shares of such series for such Subsequent Rate Period (or
          for any Rate Period thereof thereafter to and including the Rate
          Period during which (1) such Failure to Deposit is cured in accordance
          with subparagraph (f) of this paragraph 2 and (2) the Trust pays the
          applicable Late Charge to the Auction Agent (the condition set forth
          in this clause (2) to apply only in the event Moody's is rating such
          shares at the time the Trust cures such Failure to Deposit), in each
          case no later than 12:00 Noon, New York City time, on the fourth
          Business Day prior to the end of such Rate Period), and the dividend
          rate for shares of such series for each such Subsequent Rate Period
          shall be a rate per annum equal to the Maximum Rate for shares of such
          series on the Auction Date for such Subsequent Rate Period (but with
          the prevailing rating for shares of such series, for purposes of
          determining such Maximum Rate, being deemed to be "Below 'ba3'/BB-")
          (the rate per annum of which dividends are payable on shares of a
          series of Municipal Preferred for any Rate Period thereof being herein
          referred to as the "Applicable Rate" for shares of such series).

          (ii) CALCULATION OF DIVIDENDS. The amount of dividends per share
     payable on shares of a series of Municipal Preferred on any date on which
     dividends shall be payable on shares of such series shall be computed by
     multiplying the Applicable Rate for shares of such series in effect for
     such Dividend Period or Dividend Periods or part thereof for which
     dividends have not been paid by a fraction, the numerator of which shall be
     the number of days in such Dividend Period or Dividend Periods or part
     thereof and the denominator of which shall be 365 if such Dividend Period
     consists of 7 Rate Period Days and 360 for all other Dividend Periods, and
     applying the rate obtained against $25,000.

     (f) CURING A FAILURE TO DEPOSIT. A Failure to Deposit with respect to
shares of a series of Municipal Preferred shall have been cured (if such Failure
to Deposit is not solely due to the willful failure of the Trust to make the
required payments to the Auction Agent) with respect to any Rate Period of
shares of such series if, within the respective time periods described in
subparagraph (e)(i) of this paragraph 2, the Trust shall have paid to the
Auction Agent (A) all accumulated and unpaid dividends on shares of such series
and (B) without duplication, the Redemption Price for shares, if any, of such
series for which Notice of Redemption has been mailed by the Trust pursuant to
paragraph 11(c) of Part I of this Section 12.1; provided, however, that the
foregoing clause (B) shall not apply to the Trust's failure to pay the
Redemption Price in respect of shares of Municipal Preferred when the related
Redemption Notice provides that redemption of such shares is subject to one or
more conditions precedent and any such condition precedent shall not have been
satisfied at the time or times and in the manner specified in such Notice of
Redemption.


                                      -32-


<PAGE>   33


     (g) DIVIDEND PAYMENTS BY TRUST TO AUCTION AGENT. The Trust shall pay to the
Auction Agent, not later than 12:00 Noon, New York City time, on the Business
Day next preceding each Dividend Payment Date for shares of a series of
Municipal Preferred, an aggregate amount of funds available on the next Business
Day in The City of New York, New York, equal to the dividends to be paid to all
Holders of shares of such series on such Dividend Payment Date.

     (h) AUCTION AGENT AS TRUSTEE OF DIVIDEND PAYMENTS BY TRUST. All moneys paid
to the Auction Agent for the payment of dividends (or for the payment of any
Late Charge) shall be held in trust for the payment of such dividends (and any
such Late Charge) by the Auction Agent for the benefit of the Holders specified
in subparagraph (i) of this paragraph 2. Any moneys paid to the Auction Agent in
accordance with the foregoing but not applied by the Auction Agent to the
payment of dividends (and any such Late Charge) will, to the extent permitted by
law, be repaid to the Trust at the end of 90 days from the date on which such
moneys were so to have been applied.

     (i) DIVIDENDS PAID TO HOLDERS. Each dividend on shares of Municipal
Preferred shall be paid on the Dividend Payment Date therefor to the Holders
thereof as their names appear on the record books of the Trust on the Business
Day next preceding such Dividend Payment Date.

     (j) DIVIDENDS CREDITED AGAINST EARLIEST ACCUMULATED BUT UNPAID DIVIDENDS.
Any dividend payment made on shares of Municipal Preferred shall first be
credited against the earliest accumulated but unpaid dividends due with respect
to such shares. Dividends in arrears for any past Dividend Period may be
declared and paid at any time, without reference to any regular Dividend Payment
Date, to the Holders as their names appear on the record books of the Trust on
such date, not exceeding 15 days preceding the payment date thereof, as may be
fixed by the Board of Trustees.

     (k) DIVIDENDS DESIGNATED AS EXEMPT-INTEREST DIVIDENDS. Dividends on shares
of Municipal Preferred shall be designated as exempt-interest dividends up to
the amount of tax-exempt income of the Trust, to the extent permitted by, and
for purposes of, Section 852 of the Code.

     3. GROSS-UP PAYMENTS.

     Holders of shares of Municipal Preferred shall be entitled to receive,
when, as and if declared by the Board of Trustees, out of funds legally
available therefor in accordance with the Declaration, these By-laws and
applicable law, dividends in an amount equal to the aggregate Gross-up Payments
as follows:

     (a) MINIMUM RATE PERIODS AND SPECIAL RATE PERIODS OF 28 RATE PERIOD DAYS OR
FEWER. If, in the case of any Minimum Rate Period or any Special Rate Period of
28 Rate Period Days or fewer, the Trust allocates any net capital gain or other
income taxable for Federal income tax

                                      -33-

<PAGE>   34


purposes to a dividend paid on shares of Municipal Preferred without having
given advance notice thereof to the Auction Agent as provided in paragraph 5 of
Part II of this Section 12.1 (such allocation being referred to herein as a
"Taxable Allocation") solely by reason of the fact that such allocation is made
retroactively as a result of the redemption of all or a portion of the
outstanding shares of Municipal Preferred or the liquidation of the Trust, the
Trust shall, prior to the end of the calendar year in which such dividend was
paid, provide notice thereof to the Auction Agent and direct the Trust's
dividend disbursing agent to send such notice with a Gross-up Payment to each
Holder of such shares that was entitled to such dividend payment during such
calendar year at such Holder's address as the same appears or last appeared on
the record books of the Trust.

     (b) SPECIAL RATE PERIODS OF MORE THAN 28 RATE PERIOD DAYS. If, in the case
of any Special Rate Period of more than 28 Rate Period Days, the Trust makes a
Taxable Allocation to a dividend paid on shares of Municipal Preferred, the
Trust shall, prior to the end of the calendar year in which such dividend was
paid, provide notice thereof to the Auction Agent and direct the Trust's
dividend disbursing agent to send such notice with a Gross-up Payment to each
Holder of shares that was entitled to such dividend payment during such calendar
year at such Holder's address as the same appears or last appeared on the record
books of the Trust.

     (c) NO GROSS-UP PAYMENTS IN THE EVENT OF A REALLOCATION. The Trust shall
not be required to make Gross-up Payments with respect to any net capital gain
or other taxable income determined by the Internal Revenue Service to be
allocable in a manner different from that allocated by the Trust.

     4. DESIGNATION OF SPECIAL RATE PERIODS.

     (a) LENGTH OF AND PRECONDITIONS FOR SPECIAL RATE PERIOD. The Trust, at its
option, may designate any succeeding Subsequent Rate Period of shares of a
series of Municipal Preferred as a Special Rate Period consisting of a specified
number of Rate Period Days evenly divisible by seven and not more than 1,820,
subject to adjustment as provided in subparagraph (b) of this paragraph 4. A
designation of a Special Rate Period shall be effective only if (A) notice
thereof shall have been given in accordance with subparagraphs (c) and (d)(i) of
this paragraph 4, (B) an Auction for shares of such series shall have been held
on the Auction Date immediately preceding the first day of such proposed Special
Rate Period and Sufficient Clearing Bids for shares of such series shall have
existed in such Auction, and (C) if any Notice of Redemption shall have been
mailed by the Trust pursuant to paragraph 11(c) of Part I of this Section 12.1
with respect to any shares of such series, the Redemption Price with respect to
such shares shall have been deposited with the Auction Agent. In the event the
Trust wishes to designate any succeeding Subsequent Rate Period for shares of a
series of Municipal Preferred as a Special Rate Period consisting of more than
28 Rate Period Days, the Trust shall notify S&P (if S&P is then rating such
series) and Moody's (if Moody's is then rating such series) in advance of the
commencement of such Subsequent Rate Period that the Trust wishes to designate
such Subsequent Rate Period as a Special Rate Period and shall provide S&P (if
S&P is then rating such series) and Moody's (if Moody's is then rating such
series) with such documents as either may request.


                                      -34-

<PAGE>   35



     (b) ADJUSTMENT OF LENGTH OF SPECIAL RATE PERIOD. In the event the Trust
wishes to designate a Subsequent Rate Period as a Special Rate Period, but the
day following what would otherwise be the last day of such Special Rate Period
is not a Tuesday that is a Business Day, then the Trust shall designate such
Subsequent Rate Period as a Special Rate Period consisting of the period
commencing at the end of the immediately preceding Rate period and ending on the
first Monday that is followed by a Tuesday that is a Business Day preceding what
would otherwise be such last day, in the case of Series M Municipal Preferred.

     (c) NOTICE OF PROPOSED SPECIAL RATE PERIOD. If the Trust proposes to
designate any succeeding Subsequent Rate Period of shares of a series of
Municipal Preferred as a Special Rate Period pursuant to subparagraph (a) of
this paragraph 4, not less than 20 (or such lesser number of days as may be
agreed to from time to time by the Auction Agent) nor more than 30 days prior to
the date the Trust proposes to designate as the first day of such Special Rate
Period (which shall be such day that would otherwise be the first day of a
Minimum Rate Period), notice shall be (i) published or caused to be published by
the Trust in a newspaper of general circulation to the financial community in
The City of New York, New York, which carries financial news, and (ii) mailed by
the Trust by first-class mail, postage prepaid, to the Holders of shares of such
series. Each such notice shall state (A) that the Trust may exercise its option
to designate a succeeding Subsequent Rate Period of shares of such series as a
Special Rate Period, specifying the first day thereof and (B) that the Trust
will, by 11:00 A.M., New York City time, on the second Business Day next
preceding such date (or by such later time or date, or both, as may be agreed to
by the Auction Agent) notify the Auction Agent of either (x) its determination,
subject to certain conditions, to exercise such option, in which case the Trust
shall specify the Special Rate Period designated, or (y) its determination not
to exercise such option.

     (d) NOTICE OF SPECIAL RATE PERIOD. No later than 11:00 A.M., New York City
time, on the second Business Day next preceding the first day of any proposed
Special Rate Period of

                                      -35-

<PAGE>   36

shares of a series of Municipal Preferred as to which notice has been given as
set forth in subparagraph (c) of this paragraph 4 (or such later time or date,
or both, as may be agreed to by the Auction Agent), the Trust shall deliver to
the Auction Agent either:

          (i) a notice ("Notice of Special Rate Period") stating (A) that the
     Trust has determined to designate the next succeeding Rate Period of shares
     of such series as a Special Rate Period, specifying the same and the first
     day thereof, (B) the Auction Date immediately prior to the first day of
     such Special Rate Period, (C) that such Special Rate Period shall not
     commence if (1) an Auction for shares of such series shall not be held on
     such Auction Date for any reason or (2) an Auction for shares of such
     series shall be held on such Auction Date but Sufficient Clearing Bids for
     shares of such series shall not exist in such Auction, (D) the scheduled
     Dividend Payment Dates for shares of such series during such Special Rate
     Period and (E) the Special Redemption Provisions, if any, applicable to
     shares of such series in respect of such Special Rate Period; such notice
     to be accompanied by a Municipal Preferred Basic Maintenance Report showing
     that, as of the third Business Day next preceding such proposed Special
     Rate Period, Moody's Eligible Assets (if Moody's is then rating such
     series) and S&P Eligible Assets (if S&P is then rating such series) each
     have an aggregate Discounted Value at least equal to the Municipal
     Preferred Basic Maintenance Amount as of such Business Day (assuming for
     purposes of the foregoing calculation that (a) the Maximum Rate is the
     Maximum Rate on such Business Day as if such Business Day were the Auction
     Date for the proposed Special Rate Period, and (b) the Moody's Discount
     Factors applicable to Moody's Eligible Assets are determined by reference
     to the first Exposure Period longer than the Exposure Period then
     applicable to the Trust, as described in the definition of Moody's Discount
     Factor herein); or

          (ii) a notice stating that the Trust has determined not to exercise
     its option to designate a Special Rate Period of shares of such series and
     that the next succeeding Rate Period of shares of such series shall be a
     Minimum Rate Period.

     (e) FAILURE TO DELIVER NOTICE OF SPECIAL RATE PERIOD. If the Trust fails to
deliver either of the notices described in subparagraphs (d)(i) or (d)(ii) of
this paragraph 4 (and, in the case of the notice described in subparagraph
(d)(i) of this paragraph 4, a Municipal Preferred Basic Maintenance Report to
the effect set forth in such subparagraph (if either Moody's or S&P is then
rating the series in question)) with respect to any designation of any proposed
Special Rate Period to the Auction Agent by 11:00 A.M., New York City time, on
the second Business Day next preceding the first day of such proposed Special
Rate Period (or by such later time or date, or both, as may be agreed to by the
Auction Agent), the Trust shall be deemed to have delivered a notice to the
Auction Agent with respect to such Special Rate Period to the effect set forth
in subparagraph (d)(ii) of this paragraph 4. In the event the Trust delivers to
the Auction Agent a notice described in subparagraph (d)(i) of this paragraph 4,
it shall file a copy of such notice with the Secretary of the Trust, and the
contents of such notice shall be binding on the Trust. In the event the Trust
delivers to the Auction Agent a notice described in subparagraph (d)(ii) of this


                                      -36-

<PAGE>   37


paragraph 4, the Trust will provide Moody's (if Moody's is then rating the
series in question) and S&P (if S&P is then rating the series in question) a
copy of such notice.

     5. VOTING RIGHTS.

     (a) ONE VOTE PER SHARE OF MUNICIPAL PREFERRED. Except as otherwise provided
in the Declaration, this paragraph 5 or as otherwise required by law, (i) each
Holder of shares of Municipal Preferred shall be entitled to one vote for each
share of Municipal Preferred held by such Holder on each matter submitted to a
vote of shareholders of the Trust, and (ii) the holders of outstanding Preferred
Shares, including each share of Municipal Preferred, and of Common Shares shall
vote together as a single class; provided, however, that, at any meeting of the
shareholders of the Trust held for the election of trustees, the holders of
outstanding Preferred Shares, including Municipal Preferred, represented in
person or by proxy at said meeting, shall be entitled, as a class, to the
exclusion of the holders of all other securities and classes of shares of
beneficial interest of the Trust, to elect two trustees of the Trust, each
Preferred Share, including each share of Municipal Preferred, entitling the
holder thereof to one vote. Subject to subparagraph (b) of this paragraph 5, the
holders of outstanding Common Shares and Preferred Shares, including Municipal
Preferred, voting together as a single class, shall elect the balance of the
trustees.

     (b) VOTING FOR ADDITIONAL TRUSTEES.

          (i) VOTING PERIOD. During any period in which any one or more of the
     conditions described in subparagraphs (A) or (B) of this subparagraph
     (b)(i) shall exist (such period being referred to herein as a "Voting
     Period"), the number of trustees constituting the Board of Trustees shall
     be automatically increased by the smallest number that, when added to the
     two trustees elected exclusively by the holders of Preferred Shares,
     including shares of Municipal Preferred, would constitute a majority of the
     Board of Trustees as so increased by such smallest number; and the holders
     of Preferred Shares, including Municipal Preferred, shall be entitled,
     voting as a class on a one-vote-per-share basis (to the exclusion of the
     holders of all other securities and classes of shares of beneficial
     interest of the Trust), to elect such smallest number of additional
     trustees, together with the two trustees that such holders are in any event
     entitled to elect. A Voting Period shall commence:

               (A) if at the close of business on any dividend payment date
          accumulated dividends (whether or not earned or declared) on any
          outstanding Preferred Share, including Municipal Preferred, equal to
          at least two full years' dividends shall be due and unpaid and
          sufficient cash or specified securities shall not have been deposited
          with the Auction Agent for the payment of such accumulated dividends;
          or

                                      -37-

<PAGE>   38


               (B) if at any time holders of Preferred Shares are entitled under
          the 1940 Act to elect a majority of the trustees of the Trust.

Upon the termination of a Voting Period, the voting rights described in this
subparagraph (b)(i) shall cease, subject always, however, to the revesting of
such voting rights in the Holders upon the further occurrence of any of the
events described in this subparagraph (b)(i).

          (ii) NOTICE OF SPECIAL MEETING. As soon as practicable after the
     accrual of any right of the holders of Preferred Shares to elect additional
     trustees as described in subparagraph (b)(i) of this paragraph 5, the Trust
     shall notify the Auction Agent and the Auction Agent shall call a special
     meeting of such holders, by mailing a notice of such special meeting to
     such holders, such meeting to be held not less than 10 nor more than 20
     days after the date of mailing of such notice. If the Trust fails to send
     such notice to the Auction Agent or if the Auction Agent does not call such
     a special meeting, it may be called by any such holder on like notice. The
     record date for determining the holders entitled to notice of and to vote
     at such special meeting shall be the close of business on the fifth
     Business Day preceding the day on which such notice is mailed. At any such
     special meeting and at each meeting of holders of Preferred Shares held
     during a Voting Period at which trustees are to be elected, such holders,
     voting together as a class (to the exclusion of the holders of all other
     securities and classes of shares of beneficial interest of the Trust),
     shall be entitled to elected the number of trustees prescribed in
     subparagraph (b)(i) of this paragraph 5 on a one-vote-per-share basis.

          (iii) TERMS OF OFFICE OF EXISTING TRUSTEES. The terms of office of all
     persons who are trustees of the Trust at the time of a special meeting of
     Holders and holders of other Preferred Shares to elect trustees shall
     continue, notwithstanding the election at such meeting by the Holders and
     such other holders of the number of trustees that they are entitled to
     elect, and the persons so elected by the Holders and such other holders,
     together with the two incumbent trustees elected by the Holders and such
     other holders of Preferred Shares and the remaining incumbent trustees
     elected by the Holders of the Common Shares and Preferred Shares, shall
     constitute the duly elected trustees of the Trust.

          (iv) TERMS OF OFFICE OF CERTAIN TRUSTEES TO TERMINATE UPON TERMINATION
     OF VOTING PERIOD. Simultaneously with the termination of a Voting Period,
     the term of office of the additional trustees elected by the Holders and
     holders of other Preferred Shares pursuant to subparagraph (b)(i) of this
     paragraph 5 shall terminate, the remaining trustees shall constitute the
     trustees of the Trust and the voting rights of the Holders and such other
     holders to elect additional trustees pursuant to subparagraph (b)(i) of
     this paragraph 5 shall cease, subject to the provisions of the last
     sentence of subparagraph (b)(i) of this paragraph 5.

                                      -38-

<PAGE>   39


     (c) HOLDERS OF MUNICIPAL PREFERRED TO VOTE ON CERTAIN OTHER MATTERS.

          (i) INCREASES IN CAPITALIZATION. So long as any shares of Municipal
     Preferred are outstanding, the Trust shall not, without the affirmative
     vote or consent of the Holders of at least a majority of the shares of
     Municipal Preferred outstanding at the time, in person or by proxy, either
     in writing or at a meeting, voting as a separate class: (a) authorize,
     create or issue any class or series of shares ranking prior to or on a
     parity with shares of Municipal Preferred with respect to the payment of
     dividends or the distribution of assets upon dissolution, liquidation or
     winding up of the affairs of the Trust, or authorize, create or issue
     additional shares of any series of Municipal Preferred (except that,
     notwithstanding the foregoing, but subject to the provisions of paragraph
     10(c) of Part I of this Section 12.1, the Board of Trustees, without the
     vote or consent of the Holders of Municipal Preferred, may from time to
     time authorize and create, and the Trust may from time to time issue,
     additional shares of any series of Municipal Preferred or classes or series
     of Preferred Shares ranking on a parity with shares of Municipal Preferred
     with respect to the payment of dividends and the distribution of assets
     upon dissolution, liquidation or winding up of the affairs of the Trust;
     provided, however, that if Moody's or S&P is not then rating the shares of
     Municipal Preferred, the aggregate liquidation preference of all Preferred
     Shares of the Trust outstanding after any such issuance, exclusive of
     accumulated and unpaid dividends, may not exceed $60,000,000) or (b) amend,
     alter or repeal the provisions of the Declaration or the By-Laws, including
     this Section 12.1, whether by merger, consolidation or otherwise, so as to
     materially affect any preference, right or power of such shares of
     Municipal Preferred to the Holders thereof; provided, however, that (i)
     none of the actions permitted by the exception to (a) above will be deemed
     to affect such preferences, rights or powers, (ii) a division of a share of
     Municipal Preferred will be deemed to affect such preferences, rights or
     powers only if the terms of such division adversely affect the Holders of
     shares of Municipal Preferred and (iii) the authorization, creation and
     issuance of classes or series of shares ranking junior to shares of
     Municipal Preferred with respect to the payment of dividends and the
     distribution of assets upon dissolution, liquidation or winding up of the
     affairs of the Trust, will be deemed to affect such preferences, rights or
     powers only if Moody's or S&P is then rating shares of Municipal Preferred
     and such issuance would, at the time thereof, cause the Trust not to
     satisfy the 1940 Act Municipal Preferred Asset Coverage or the Municipal
     Preferred Basic Maintenance Amount. So long as any shares of Municipal
     Preferred are outstanding, the Trust shall not, without the affirmative
     vote or consent of the Holders of at least 66 2/3% of the shares of
     Municipal Preferred outstanding at the time, in person or by proxy, either
     in writing or at a meeting, voting as a separate class, file a voluntary
     application for relief under Federal bankruptcy law or any similar
     application under state law for so long as the Trust is solvent and does
     not foresee becoming insolvent.

          (ii) 1940 ACT MATTERS. Unless a higher percentage is provided for in
     the Declaration or these By-laws, (A) the affirmative vote of the Holders
     of at least a majority of the Preferred Shares, including Municipal
     Preferred, outstanding at the time, voting as a


                                      -39-

<PAGE>   40


     separate class, shall be required to approve any conversion of the Trust
     from a closed-end to an open-end investment company and (B) the affirmative
     vote of the Holders of a "majority of the outstanding Preferred Shares,"
     including Municipal Preferred, voting as a separate class, shall be
     required to approve any plan of reorganization (as such term is used in the
     1940 Act) adversely affecting such shares. The affirmative vote of the
     Holders of a "majority of the outstanding Preferred Shares," including
     Municipal Preferred, voting as a separate class, shall be required to
     approve any action not described in the first sentence of this paragraph
     5(c)(ii) requiring a vote of security holders of the Trust under Section
     13(a) of the 1940 Act. For purposes of the foregoing, "majority of the
     outstanding Preferred Shares" means (i) 67% or more of such shares present
     at a meeting, if the Holders of more than 50% of such shares are present or
     represented by proxy, or (ii) more than 50% of such shares, whichever is
     less. In the event a vote of Holders of Municipal Preferred is required
     pursuant to the provisions of Section 13(a) of the 1940 Act, the Trust
     shall, not later than ten Business Days prior to the date on which such
     vote is to be taken, notify Moody's (if Moody's is then rating the shares
     of Municipal Preferred) and S&P (if S&P is then rating the shares of
     Municipal Preferred) that such vote is to be taken and the nature of the
     action with respect to which such vote is to be taken. The Trust shall, not
     later than ten Business Days after the date on which such vote is taken,
     notify Moody's (if Moody's is then rating the shares of Municipal
     Preferred) and S&P (if S&P is then rating the shares of Municipal
     Preferred) of the results of such vote.

          (iii) SEPARATE VOTE BY SERIES. To the extent permitted by the 1940
     Act, with respect to actions set forth in paragraph 5(c)(i) and paragraph
     5(c)(ii) above (including amendment, alteration or repeal of the provisions
     of the Declaration of Trust or the By-Laws, whether by merger,
     consolidation or otherwise) that would adversely affect the rights of one
     or more series of Municipal Preferred (the "Affected Series") in a manner
     different from any other series of Municipal Preferred, the Trust will not
     approve any such action without the affirmative vote or consent of the
     Holders of at least a majority of the shares of each such Affected Series
     outstanding at the time, in person or proxy, either in writing or at a
     meeting (each such Affected Series voting as a separate class).

     (d) BOARD MAY TAKE CERTAIN ACTIONS WITHOUT SHAREHOLDER APPROVAL. The Board
of Trustees, without the vote or consent of the shareholders of the Trust, may
from time to time amend, alter or repeal any or all of the definitions of the
terms listed below, or any provision of this Section 12.1 viewed by Moody's or
S&P as a predicate for any such definition, and any such amendment, alteration
or repeal will not be deemed to affect the preferences, rights or powers of
shares of Municipal Preferred or the Holders thereof; provided, however, that
the Board of Trustees receives written confirmation from (i) Moody's (such
confirmation being required to be obtained only in the event Moody's is rating
the shares of Municipal Preferred and in no event being required to be obtained
in the case of the definitions of (x) Deposit Securities, Discounted Value,
Receivables for Municipal Obligations Sold and Other Issues as such terms apply
to S&P Eligible Asset and (y) S&P Discount Factor, S&P Eligible Asset, S&P
Exposure Period and S&P Volatility Factor) and (ii) S&P (such confirmation being
required to be obtained only in the event


                                      -40-

<PAGE>   41


S&P is rating the shares of Municipal Preferred and in no event being required
to be obtained in the case of the definitions of (x) Discounted Value,
Receivables for Municipal Obligations Sold and Other Issues as such terms apply
to Moody's Eligible Asset, and (y) Moody's Discount Factor, Moody's Eligible
Asset, Moody's Exposure Period and Moody's Volatility Factor) that any such
amendment, alteration or repeal would not impair the ratings then assigned by
Moody's or S&P, as the case may be, to shares of Municipal Preferred:
<TABLE>

         <S>                                                          <C>
         Deposit Securities                                           Moody's Exposure Period
         Discounted Value                                             Moody's Volatility Factor
         Escrowed Bonds                                               1940 Act Cure Date
         Market Value                                                 1940 Act Municipal Preferred Asset Coverage
         Maximum Potential Gross-up Payment Liability                 Other Issues
         Municipal Preferred Basic Maintenance                        Quarterly Valuation Date
            Amount                                                    Receivables for Municipal Obligations Sold
         Municipal Preferred Basic Maintenance Cure                   S&P Discount Factor
            Date                                                      S&P Eligible Asset
         Municipal Preferred Basic Maintenance Report                 S&P Exposure Period
         Moody's Discount Factor                                      S&P Volatility Factor
         Moody's Eligible Asset                                       Valuation Date
                                                                      Volatility Factor

</TABLE>

     (e) VOTING RIGHTS SET FORTH HEREIN ARE SOLE VOTING RIGHTS. Unless otherwise
required by law, these By-laws or by the Declaration, the Holders of shares of
Municipal Preferred shall not have any relative rights or preferences or other
special rights other than those specifically set forth herein.

     (f) NO PREEMPTIVE RIGHTS OR CUMULATIVE VOTING. The Holders of shares of
Municipal Preferred shall have no preemptive rights or rights to cumulative
voting.

     (g) VOTING FOR TRUSTEES SOLE REMEDY FOR TRUST'S FAILURE TO PAY DIVIDENDS.
In the event that the Trust fails to pay any dividends on the shares of
Municipal Preferred, the exclusive remedy of the Holders shall be the right to
vote for Trustees pursuant to the provisions of this paragraph 5.

     (h) HOLDERS ENTITLED TO VOTE. For purposes of determining any rights of the
Holders to vote on any matter, whether such right is created by this Section
12.1, by the other provisions of these By-laws or the Declaration, by statute or
otherwise, no Holder shall be entitled to vote any share of Municipal Preferred
and no share of Municipal Preferred shall be deemed to be "outstanding" for the
purpose of voting or determining the number of shares required to constitute a
quorum if, prior to or concurrently with the time of determination of shares
entitled to vote or shares deemed outstanding for quorum purposes, as the case
may be, the requisite Notice of Redemption with respect to such shares shall
have been mailed as provided in paragraph 11(c) of Part I of this Section 12.1
and the Redemption Price for the redemption of such shares shall have been
deposited in trust with the Auction Agent for that purpose. No shares of
Municipal Preferred held by the Trust or any affiliate of the Trust (except for
shares held by a Broker-Dealer that is an affiliate of the Trust for the account
of its customers) shall have any voting rights or be deemed to be outstanding
for voting or other purposes.

                                      -41-

<PAGE>   42

     (i) Notwithstanding any provision of these By-Laws to the contrary, neither
the Holders of Municipal Preferred, nor the Holders of any one or more series
thereof, shall be entitled to vote as a separate class with respect to any
matter, if such separate class vote is prohibited by the 1940 Act.

     6. 1940 ACT MUNICIPAL PREFERRED ASSET COVERAGE.

     The Trust shall maintain, as of the last Business Day of each month in
which any share of Municipal Preferred is outstanding, the 1940 Act Municipal
Preferred Asset Coverage.

     7. MUNICIPAL PREFERRED BASIC MAINTENANCE AMOUNT.

     (a) So long as shares of Municipal Preferred are outstanding, the Trust
shall maintain, on each Valuation Date, and shall verify to its satisfaction
that it is maintaining on such Valuation Date, (i) S&P Eligible Assets having an
aggregate Discounted Value equal to or greater than the Municipal Preferred
Basic Maintenance Amount (if S&P is then rating the shares of Municipal
Preferred) and (ii) Moody's Eligible Assets having an aggregate Discounted Value
equal to or greater than the Municipal Preferred Basic Maintenance Amount (if
Moody's is then rating the shares of Municipal Preferred).

     (b) On or before 5:00 P.M., New York City time, on the third Business Day
after a Valuation Date on which the Trust fails to satisfy the Municipal
Preferred Basic Maintenance Amount, and on the third Business Day after the
Municipal Preferred Basic Maintenance Cure Date with respect to such Valuation
Date, the Trust shall complete and deliver to S&P (if S&P is then rating the
shares of Municipal Preferred), Moody's (if Moody's is then rating the shares of
Municipal Preferred) and the Auction Agent (if either S&P or Moody's is then
rating the shares of Municipal Preferred) a Municipal Preferred Basic
Maintenance Report as of the date of such failure or such Municipal Preferred
Basic Maintenance Cure Date, as the case may be, which will be deemed to have
been delivered to the Auction Agent if the Auction Agent receives a copy of
telecopy, telex or other electronic transcription thereof and on the same day
the Trust mails to the Auction Agent for delivery on the next Business Day the
full Municipal Preferred Basic Maintenance Report.

     The Trust shall also deliver a Municipal Preferred Basic Maintenance Report
to (i) the Auction Agent (if either Moody's or S&P is then rating the shares of
Municipal Preferred) as of (A) the fifteenth day of each month (or, if such day
is not a Business Day, the next succeeding Business Day) and (B) the last
Business Day of each month, (ii) Moody's (if Moody's is then rating the shares
of Municipal Preferred) and S&P (if S&P is then rating the shares of Municipal
Preferred) as of any Quarterly Valuation Date, in each case on or before the
third Business Day after such day, and (iii) S&P and Moody's, if and when
requested for any Valuation Date, on or before the third Business Day after such
request. A failure by the Trust to deliver a Municipal Preferred Basic
Maintenance Report pursuant to the preceding sentence shall be deemed to be

                                      -42-

<PAGE>   43

delivery of a Municipal Preferred Basic Maintenance Report indicating the
Discounted Value for all assets of the Trust is less than the Municipal
Preferred Basic Maintenance Amount, as of the relevant Valuation Date.

     (c) Within ten Business Days after the date of delivery of a Municipal
Preferred Basic Maintenance Report in accordance with subparagraph (b) of this
paragraph 7 relating to a Quarterly Valuation Date, the Trust shall cause the
Independent Accountant to confirm in writing to S&P (if S&P is then rating the
shares of Municipal Preferred), Moody's (if Moody's is then rating the shares of
Municipal Preferred) and the Auction Agent (if either S&P or Moody's is then
rating the shares of Municipal Preferred) (i) the mathematical accuracy of the
calculations reflected in such Report (and in any other Municipal Preferred
Basic Maintenance Report, randomly selected by the Independent Accountant, that
was delivered by the Trust during the quarter ending on such Quarterly Valuation
Date) and (ii) that, in such Report (and in such randomly selected Report), the
Trust determined in accordance with this paragraph whether the Trust had, at
such Quarterly Valuation Date (and at the Valuation Date addressed in such
randomly-selected Report), S&P Eligible Assets (if S&P is then rating the shares
of Municipal Preferred) of an aggregate Discounted Value at least equal to the
Municipal Preferred Basic Maintenance Amount and Moody's Eligible Assets (if
Moody's is then rating the shares of Municipal Preferred) of an aggregate
Discounted Value at least equal to the Municipal Preferred Basic Maintenance
Amount (such confirmation being herein called the "Accountant's Confirmation").

     (d) Within ten Business Days after the date of delivery of a Municipal
Preferred Basic Maintenance Report in accordance with subparagraph (b) of this
paragraph 7 relating to any Valuation Date on which the Trust failed to satisfy
the Municipal Preferred Basic Maintenance Amount, and relating to the Municipal
Preferred Basic Maintenance Cure Date with respect to such failure to satisfy
the Municipal Preferred Basic Maintenance Amount, the Trust shall cause the
Independent Accountant to provide to S&P (if S&P is then rating the shares of
Municipal Preferred), Moody's (if Moody's is then rating the shares of Municipal
Preferred) and the Auction Agent (if either S&P or Moody's is then rating the
shares of Municipal Preferred) an Accountant's Confirmation as to such Municipal
Preferred Basic Maintenance Report.

     (e) If any Accountant's Confirmation delivered pursuant to subparagraph (c)
or (d) of this paragraph 7 shows that an error was made in the Municipal
Preferred Basic Maintenance Report for a particular Valuation Date for which
such Accountant's Confirmation was required to be delivered, or shows that a
lower aggregate Discounted Value for the aggregate of all S&P Eligible Assets
(if S&P is then rating the shares of Municipal Preferred) or Moody's Eligible
Assets (if Moody's is then rating the shares of Municipal Preferred), as the
case may be, of the Trust was determined by the Independent Accountant, the
calculation or determination made by such Independent Accountant shall be final
and conclusive and shall be binding on the Trust, and the Trust shall
accordingly amend and deliver the Municipal Preferred Basic Maintenance Report
to S&P (if S&P is then rating the shares of Municipal Preferred), Moody's (if
Moody's is then rating the shares of Municipal Preferred) and the Auction Agent
(if either S&P or Moody's is then rating

                                      -43-


<PAGE>   44

the shares of Municipal Preferred) promptly following receipt by the Trust of
such Accountant's Confirmation.

     (f) On or before 5:00 p.m., New York City time, on the first Business Day
after the Date of Original Issue of any shares of Municipal Preferred, the Trust
shall complete and deliver to S&P (if S&P is then rating the shares of Municipal
Preferred) and Moody's (if Moody's is then rating the shares of Municipal
Preferred) a Municipal Preferred Basic Maintenance Report as of the close of
business on such Date of Original Issue. Within five Business Days of such Date
of Original Issue, the Trust shall cause the Independent Accountant to confirm
in writing to S&P (if S&P is then rating the shares of Municipal Preferred) (i)
the mathematical accuracy of the calculations reflected in such Report and (ii)
that the Discounted Value of S&P Eligible Assets reflected thereon equals or
exceeds the Municipal Preferred Basic Maintenance Amount reflected thereon.

     (g) On or before 5:00 p.m., New York City time, on the third Business Day
after either (i) the Trust shall have redeemed Common Shares or (ii) the ratio
of the Discounted Value of S&P Eligible Assets or the Discounted Value of
Moody's Eligible Assets to the Municipal Preferred Basic Maintenance Amount is
less than or equal to 105%, the Trust shall complete and deliver to S&P (if S&P
is then rating the shares of Municipal Preferred) or Moody's (if Moody's is then
rating the shares of Municipal Preferred), as the case may be, a Municipal
Preferred Basic Maintenance Report as of the date of either such event.

     8. [RESERVED].

     9. RESTRICTIONS ON DIVIDENDS AND OTHER DISTRIBUTIONS.

     (a) DIVIDENDS ON PREFERRED SHARES OTHER THAN MUNICIPAL PREFERRED. Except as
set forth in the next sentence, no dividends shall be declared or paid or set
apart for payment on the shares of any class or series of shares of beneficial
interest of the Trust ranking, as to the payment of dividends, on a parity with
shares of Municipal Preferred for any period unless full cumulative dividends
have been or contemporaneously are declared and paid on the shares of each
series of Municipal Preferred through its most recent Dividend Payment Date.
When dividends are not paid in full upon the shares of each series of Municipal
Preferred through its most recent Dividend Payment Date or upon the shares of
any other class or series of shares of beneficial interest of the Trust ranking
on a parity as to the payment of dividends with shares of Municipal Preferred
through their most recent respective dividend payment dates, all dividends
declared upon shares of Municipal Preferred and any other such class or series
of shares of beneficial interest ranking on a parity as to the payment of
dividends with shares of Municipal Preferred shall be declared pro rata so that
the amount of dividends declared per share on shares of Municipal Preferred and
such other class or series of shares of beneficial interest shall in all cases
bear to each other the same ratio that accumulated dividends per share on the
shares of Municipal Preferred and such other class or series of shares of
beneficial interest bear to each other (for purposes of this sentence, the
amount of dividends declared per share of Municipal Preferred shall be based on
the

                                      -44-

<PAGE>   45


Applicable Rate for such shares for the Dividend Periods during which dividends
were not paid in full).

     (b) DIVIDENDS AND OTHER DISTRIBUTIONS WITH RESPECT TO COMMON SHARES UNDER
THE 1940 ACT. The Board of Trustees shall not declare any dividend (except a
dividend payable in Common Shares), or declare any other distribution, upon the
Common Shares, or purchase Common Shares, unless in every such case the
Preferred Shares have, at the time of any such declaration or purchase, an asset
coverage (as defined in and determined pursuant to the 1940 Act) of at least
200% (or such other asset coverage as may in the future be specified in or under
the 1940 Act as the minimum asset coverage for senior securities which are
shares or stock of a closed-end investment company as a condition of declaring
dividends on its common shares or stock) after deducting the amount of such
dividend, distribution or purchase price, as the case may be.

     (c) OTHER RESTRICTIONS ON DIVIDENDS AND OTHER DISTRIBUTIONS. For so long as
any share of Municipal Preferred is outstanding, and except as set forth in
subparagraph (a) of this paragraph 9 and paragraph 12(c) of Part I of this
Section 12.1, (A) the Trust shall not declare, pay or set apart for payment any
dividend or other distribution (other than a dividend or distribution paid in
shares of, or in options, warrants or rights to subscribe for or purchase,
Common Shares or other shares, if any, ranking junior to the shares of Municipal
Preferred as to the payment of dividends and the distribution of assets upon
dissolution, liquidation or winding up) in respect of the Common Shares or any
other shares of the Trust ranking junior to or on a parity with the shares of
Municipal Preferred as to the payment of dividends or the distribution of assets
upon dissolution, liquidation or winding up, or call for redemption, redeem,
purchase or otherwise acquire for consideration any Common Shares or any other
such junior shares (except by conversion into or exchange for shares of the
Trust ranking junior to the shares of Municipal Preferred as to the payment of
dividends and the distribution of assets upon dissolution, liquidation or
winding up), or any such parity shares (except by conversion into or exchange
for shares of the Trust ranking junior to or on a parity with Municipal
Preferred as to the payment of dividends and the distribution of assets upon
dissolution, liquidation or winding up), unless (i) full cumulative dividends on
shares of each series of Municipal Preferred through its most recently ended
Dividend Period shall have been paid or shall have been declared and sufficient
funds for the payment thereof deposited with the Auction Agent and (ii) the
Trust has redeemed the full number of shares of Municipal Preferred required to
be redeemed by any provision for mandatory redemption pertaining thereto, and
(B) the Trust shall not declare, pay or set apart for payment any dividend or
other distribution (other than a dividend or distribution paid in shares of, or
in options, warrants or rights to subscribe for or purchase, Common Shares or
other shares, if any, ranking junior to shares of Municipal Preferred as to the
payment of dividends and the distribution of assets upon dissolution,
liquidation or winding up) in respect of Common Shares or any other shares of
the Trust ranking junior to shares of Municipal Preferred as to the payment of
dividends or the distribution of assets upon dissolution, liquidation or winding
up, or call for redemption, redeem, purchase or otherwise acquire for
consideration any Common Shares or any other such junior shares (except by
conversion into or exchange for shares of the Trust ranking junior to shares of
Municipal Preferred as to the payment of dividends and the distribution of
assets upon

                                      -45-

<PAGE>   46


dissolution, liquidation or winding up), unless immediately after such
transaction the Discounted Value of Moody's Eligible Assets (if Moody's is then
rating the shares of Municipal Preferred) and S&P Eligible Assets (if S&P is
then rating the shares of Municipal Preferred) would each at least equal the
Municipal Preferred Basic Maintenance Amount.

     10. RATING AGENCY RESTRICTIONS.

     For so long as any shares of Municipal Preferred are outstanding and
Moody's or S&P, or both, are rating such shares, the Trust will not, unless it
has received written confirmation from Moody's or S&P, or both, as appropriate,
that any such action would not impair the ratings then assigned by such rating
agency to such shares, engage in any one or more of the following transactions:

     (a) purchase or sell futures contracts, write, purchase or sell options on
futures contracts or write put options (except covered put options) or call
options (except covered call options) on portfolio securities except that the
Trust may purchase or sell futures contracts based on the Bond Buyer Municipal
Bond Index (the "Municipal Index") or United States Treasury Bonds or Notes
("Treasury Bonds") and write, purchase or sell put and call options on such
contracts (collectively, "Hedging Transactions"), subject to the following
limitations:

          (i) the Trust will not engage in any Hedging Transaction based on the
     Municipal Index (other than transactions which terminate a futures contract
     or option held by the Trust by the Trust's taking an opposite position
     thereto ("Closing Transactions")), which would cause the Trust at the time
     of such transaction to own or have sold the least of (A) more than 1,000
     outstanding futures contracts based on the Municipal Index, (B) outstanding
     futures contracts based on the Municipal Index exceeding in number 25% of
     the quotient of the Market Value of the Trust's total assets divided by
     $1,000 or (C) outstanding futures contracts based on the Municipal Index
     exceeding in number 10% of the average number of daily open interest
     futures contracts based on the Municipal Index in the 30 days preceding the
     time of effecting such transaction as reported by The Wall Street Journal.

          (ii) the Trust will not engage in any Hedging Transaction based on
     Treasury Bonds (other than Closing Transactions) which would cause the
     Trust at the time of such transaction to own or have sold the lesser of (A)
     outstanding futures contracts based on Treasury Bonds exceeding in number
     50% of the quotient of the Market Value of the Trust's total assets divided
     by $100,000 ($200,000 in the case of a two-year United States Treasury
     Note) or (B) outstanding futures contracts based on Treasury Bonds
     exceeding in number 10% of the average number of daily traded futures
     contracts based on Treasury Bonds in the 30 days preceding the time of
     effecting such transaction as reported by The Wall Street Journal;

                                      -46-

<PAGE>   47



          (iii) the Trust will engage in Closing Transactions to close out any
     outstanding futures contract which the Trust owns or has sold or any
     outstanding option thereon owned by the Trust in the event (A) the Trust
     does not have S&P Eligible Assets or Moody's Eligible Assets, as the case
     may be, with an aggregate Discounted Value equal to or greater than the
     Municipal Preferred Basic Maintenance Amount on two consecutive Valuation
     Dates and (B) the Trust is required to pay Variation Margin on the second
     such Valuation Date;

          (iv) the Trust will engage in a Closing Transaction to close out any
     outstanding futures contract or option thereon in the month prior to the
     delivery month under the terms of such futures contract or option thereon
     unless the Trust holds the securities deliverable under such terms; and

          (v) when the Trust writes a futures contract or option thereon, it
     will either maintain an amount of cash, cash equivalents or high grade
     (rated A or better by S&P or Moody's, as the case may be), fixed-income
     securities in a segregated account with the Trust's custodian, so that the
     amount so segregated plus the amount of Initial Margin and Variation Margin
     held in the account of or on behalf of the Trust's broker with respect to
     such futures contract or option equals the Market Value of the futures
     contract or option, or, in the event the Trust writes a futures contract or
     option thereon which requires delivery of an underlying security, it shall
     hold such underlying security in its portfolio.

     For purposes of determining whether the Trust has S&P Eligible Assets or
Moody's Eligible Assets, as the case may be, with a Discounted Value that equals
or exceeds the Municipal Preferred Basic Maintenance Amount, the Discounted
Value of cash or securities held for the payment of Initial Margin or Variation
Margin shall be zero and the aggregate Discounted Value of S&P Eligible Assets
or Moody's Eligible Assets, as the case may be, shall be reduced by an amount
equal to (I) 30% of the aggregate settlement value, as marked to market, of any
outstanding futures contracts based on the Municipal Index which are owned by
the Trust plus (II) 25% of the aggregate settlement value, as marked to market,
of any outstanding futures contracts based on Treasury Bonds which contracts are
owned by the Trust.

     (b) borrow money, except that the Trust may, without obtaining the written
confirmation described above, borrow money for the purpose of clearing
securities transactions if (i) the Municipal Preferred Basic Maintenance Amount
would continue to be satisfied after giving effect to such borrowing (which
shall mean, for purposes of the calculation of the Municipal Preferred Basic
Maintenance Amount, adding the amount of the liability for such borrowing to the
calculation of the Municipal Preferred Basic Maintenance Amount under
subparagraph (F) under the definition of that term in Part I of this Section
12.1) and (ii) such borrowing (A) is privately arranged with a bank or other
person and is evidenced by a promissory note or other evidence of indebtedness
that is not intended to be publicly distributed or (B) is for "temporary
purposes," is evidenced by a promissory note or other evidence of indebtedness
and is an amount not exceeding

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<PAGE>   48


5% of the value of the total assets of the Trust at the time of the borrowing;
for purposes of the foregoing, "temporary purpose" means that the borrowing is
to be repaid within sixty days and is not to be extended or renewed;

     (c) issue additional shares of any series of Municipal Preferred or any
class or series of shares ranking prior to or on a parity with shares of
Municipal Preferred with respect to the payment of dividends or the distribution
of assets upon dissolution, liquidation or winding up of the Trust, or reissue
any shares of Municipal Preferred previously purchased or redeemed by the Trust;

     (d) engage in any short sales of securities;

     (e) lend securities;

     (f) merge or consolidate into or with any corporation;

     (g) change the pricing service (currently both Muller Data Corporation and
Standard & Poor's J.J. Kenny Evaluation Services are used by the Trust) referred
to in the definition of Market Value to a pricing service other than Muller Data
Corporation or Standard & Poor's J.J. Kenny Evaluation Services; or

     (h) enter into reverse repurchase agreements.

     11. REDEMPTION.

     (a) OPTIONAL REDEMPTION.

          (i) Subject to the provisions of subparagraph (v) of this subparagraph
     (a), shares of Municipal Preferred of any series may be redeemed, at the
     option of the Trust, as a whole or from time to time in part, on the second
     Business Day preceding any Dividend Payment Date for shares of such series,
     out of funds legally available therefor, at a redemption price per share
     equal to the sum of $25,000 plus an amount equal to accumulated but unpaid
     dividends thereon (whether or not earned or declared) to (but not
     including) the date fixed for redemption; provided, however, that (1)
     shares of a series of Municipal Preferred may not be redeemed in part if
     after such partial redemption fewer than 500 shares of such series remain
     outstanding; (2) unless otherwise provided herein, shares of a series of
     Municipal Preferred are redeemable by the Trust during the Initial Rate
     Period thereof only on the second Business Day next preceding the last
     Dividend Payment Date for such Initial Rate Period; and (3) subject to
     subparagraph (ii) of this subparagraph (a), the Notice of Special Rate
     Period relating to a Special Rate Period of shares of a series of Municipal
     Preferred, as delivered to the Auction Agent and filed with the Secretary
     of the Trust, may provide that shares of such series shall not be
     redeemable during the whole or any part of such Special Rate Period (except
     as provided in


                                      -48-


<PAGE>   49

     subparagraph (iv) of this subparagraph (a)) or shall be redeemable during
     the whole or any part of such Special Rate Period only upon payment of such
     redemption premium or premiums as shall be specified therein ("Special
     Redemption Provisions").

          (ii) A Notice of Special Rate Period relating to shares of a series of
     Municipal Preferred for a Special Rate Period thereof may contain Special
     Redemption Provisions only if the Trust's Board of Trustees, after
     consultation with the Broker-Dealer or Broker-Dealers for such Special Rate
     Period of shares of such series, determines that such Special Redemption
     Provisions are in the best interest of the Trust.

          (iii) If fewer than all of the outstanding shares of a series of
     Municipal Preferred are to be redeemed pursuant to subparagraph (i) of this
     subparagraph (a), the number of shares of such series to be redeemed shall
     be determined by the Board of Trustees, and such shares shall be redeemed
     pro rata from the Holders of shares of such series in proportion to the
     number of shares of such series held by such Holders.

          (iv) Subject to the provisions of subparagraph (v) of this
     subparagraph (a), shares of any series of Municipal Preferred may be
     redeemed, at the option of the Trust, as a whole but not in part, out of
     funds legally available therefor, on the first day following any Dividend
     Period thereof included in a Rate Period consisting of more than 364 Rate
     Period Days if, on the date of determination of the Applicable Rate for
     shares of such series for such Rate Period, such Applicable Rate equaled or
     exceeded on such date of determination the Treasury Note Rate for such Rate
     Period, at a redemption price per share equal to the sum of $25,000 plus an
     amount equal to accumulated but unpaid dividends thereon (whether or not
     earned or declared) to (but not including) to the date fixed for
     redemption.

          (v) The Trust may not on any date mail a Notice of Redemption pursuant
     to subparagraph (c) of this paragraph 11 in respect of a redemption
     contemplated to be effected pursuant to this subparagraph (a) unless on
     such date (a) the Trust has available Deposit Securities with maturity or
     tender dates not later than the day preceding the applicable redemption
     date and having a value not less than the amount (including any applicable
     premium) due to Holders of shares of Municipal Preferred by reason of the
     redemption of such shares on such redemption date and (b) the Discounted
     Value of Moody's Eligible Assets (if Moody's is then rating the shares of
     Municipal Preferred) and the Discounted Value of S&P Eligible Assets (if
     S&P is then rating the shares of Municipal Preferred) each at least equal
     the Municipal Preferred Basic Maintenance Amount, and would at least equal
     the Municipal Preferred Basic Maintenance Amount immediately subsequent to
     such redemption if such redemption were to occur on such date. For purposes
     of determining in clause (b) of the preceding sentence whether the
     Discounted Value of Moody's Eligible Assets at least equals the Municipal
     Preferred Basic Maintenance Amount, the Moody's Discount Factors applicable
     to Moody's Eligible Assets shall be determined by reference to the first
     Exposure Period longer than the


                                      -49-

<PAGE>   50


     Exposure Period then applicable to the Trust, as described in the
     definition of Moody's Discount Factor herein.

     (b) MANDATORY REDEMPTION. The Trust shall redeem, at a redemption price
equal to $25,000 per share plus accumulated but unpaid dividends thereon
(whether or not earned or declared) to (but not including) the date fixed by the
Board of Trustees for redemption, certain of the shares of Municipal Preferred,
if the Trust fails to have either Moody's Eligible Assets with a Discounted
Value, or S&P Eligible Assets with a Discounted Value, greater than or equal to
the Municipal Preferred Basic Maintenance Amount or fails to maintain the 1940
Act Municipal Preferred Asset Coverage, in accordance with the requirements of
the rating agency or agencies then rating the shares of Municipal Preferred, and
such failure is not cured on or before the Municipal Preferred Basic Maintenance
Cure Date or the 1940 Act Cure Date, as the case may be (the "Cure Date"). The
number of shares of Municipal Preferred to be redeemed shall be equal to the
lesser of (i) the minimum number of shares of Municipal Preferred, together with
all other Preferred Shares subject to redemption or retirement, the redemption
of which, if deemed to have occurred immediately prior to the opening of
business on the Cure Date, would have resulted in the Trust's having both
Moody's Eligible Assets with a Discounted Value, and S&P Eligible Assets with a
Discounted Value, greater than or equal to the Municipal Preferred Basic
Maintenance Amount or maintaining the 1940 Act Municipal Preferred Asset
Coverage, as the case may be, on such Cure Date (provided, however, that if
there is no such minimum number of shares of Municipal Preferred and other
Preferred Shares the redemption or retirement of which would have had such
result, all shares of Municipal Preferred and Preferred Shares then outstanding
shall be redeemed), and (ii) the maximum number of shares of Municipal
Preferred, together with all other Preferred Shares subject to redemption or
retirement, that can be redeemed out of funds expected to be legally available
therefor in accordance with the Declaration, these By-laws and applicable law.
In determining the shares of Municipal Preferred required to be redeemed in
accordance with the foregoing, the Trust shall allocate the number required to
be redeemed to satisfy the Municipal Preferred Basic Maintenance Amount or the
1940 Act Municipal Preferred Asset Coverage, as the case may be, pro rata among
shares of Municipal Preferred and other Preferred Shares (and, then pro rata
among each series of Municipal Preferred) subject to redemption or retirement.
The Trust shall effect such redemption on the date fixed by the Trust therefor,
which date shall not be earlier than 20 days nor later than 40 days after such
Cure Date, except that if the Trust does not have funds legally available for
the redemption of all of the required number of shares of Municipal Preferred
and other Preferred Shares which are subject to redemption or retirement or the
Trust otherwise is unable to effect such redemption on or prior to 40 days after
such Cure Date, the Trust shall redeem those shares of Municipal Preferred and
other Preferred Shares which it was unable to redeem on the earliest practicable
date on which it is able to effect such redemption. If fewer than all of the
outstanding shares of a series of Municipal Preferred are to be redeemed
pursuant to this subparagraph (b), the number of shares of such series to be
redeemed shall be redeemed pro rata from the Holders of shares of such series in
proportion to the number of shares of such series held by such Holders.


                                      -50-


<PAGE>   51


     (c) NOTICE OF REDEMPTION. If the Trust shall determine or be required to
redeem shares of a series of Municipal Preferred pursuant to subparagraph (a) or
(b) of this paragraph 11, it shall mail a Notice of Redemption with respect to
such redemption by first class mail, postage prepaid, to each Holder of the
shares of such series to be redeemed, at such Holder's address as the same
appears on the record books of the Trust on the record date established by the
Board of Trustees. Such Notice of Redemption shall be so mailed not less than 20
nor more than 45 days prior to the date fixed for redemption. Each such Notice
of Redemption shall state: (i) the redemption date; (ii) the number of shares of
Municipal Preferred to be redeemed and the series thereof; (iii) the CUSIP
number for shares of such series; (iv) the Redemption Price; (v) the place or
places where the certificate(s) for such shares (properly endorsed or assigned
for transfer, if the Board of Trustees shall so require and the Notice of
Redemption shall so state) are to be surrendered for payment of the Redemption
Price; (vi) that dividends on the shares to be redeemed will cease to accumulate
on such redemption date; and (vii) the provisions of this paragraph 11 under
which such redemption is made. If fewer than all shares of a series of Municipal
Preferred held by any Holder are to be redeemed, the Notice of Redemption mailed
to such Holder shall also specify the number of shares of such series to be
redeemed from such Holder. The Trust may provide in any Notice of Redemption
relating to an optional redemption contemplated to be effected pursuant to
subparagraph (a) of this paragraph 11 that such redemption is subject to one or
more conditions precedent and that the Trust shall not be required to make such
redemption unless each such condition shall have been satisfied at the time or
times and in the manner specified in such Notice of Redemption.

     (d) NO REDEMPTION UNDER CERTAIN CIRCUMSTANCES. Notwithstanding the
provisions of subparagraphs (a) or (b) of this paragraph 11, if any dividends on
shares of a series of Municipal Preferred (whether or not earned or declared)
are in arrears, no shares of such series shall be redeemed unless all
outstanding shares of such series are simultaneously redeemed, and the Trust
shall not purchase or otherwise acquire any shares of such series; provided,
however, that the foregoing shall not prevent the purchase or acquisition of all
outstanding shares of such series pursuant to the successful completion of an
otherwise lawful purchase or exchange offer made on the same terms to, and
accepted by, Holders of all outstanding shares of such series.

     (e) ABSENCE OF FUNDS AVAILABLE FOR REDEMPTION. To the extent that any
redemption for which Notice of Redemption has been mailed is not made by reason
of the absence of legally available funds therefor in accordance with the
Declaration, these By-laws and applicable law, such redemption shall be made as
soon as practicable to the extent such funds become available. Failure to redeem
shares of Municipal Preferred shall be deemed to occur if at any time after the
date specified for redemption in a Notice of Redemption the Trust shall have
failed, for any reason whatsoever, to deposit in trust with the Auction Agent
the Redemption Price with respect to any shares of which such Notice of
Redemption has been mailed; provided, however, that the foregoing shall not
apply in the case of the Trust's failure to deposit in trust with the Auction
Agent the Redemption Price with respect to any shares where (1) the Notice of
Redemption relating to such redemption provided that such redemption was subject
to one or more conditions precedent and (2) any such condition precedent shall
not have been satisfied at the time or times


                                      -51-

<PAGE>   52

and in the manner specified in such Notice of Redemption. Notwithstanding the
fact that the Trust may not have redeemed shares of Municipal Preferred for
which a Notice of Redemption has been mailed, dividends may be declared and paid
on shares of Municipal Preferred and shall include those shares of Municipal
Preferred for which a Notice of Redemption has been mailed.

     (f) AUCTION AGENT AS TRUSTEE OF REDEMPTION PAYMENTS BY TRUST. All moneys
paid to the Auction Agent for payment of the Redemption Price of shares of
Municipal Preferred called for redemption shall be held in trust by the Auction
Agent for the benefit of Holders of shares so to be redeemed.

     (g) SHARES FOR WHICH NOTICE OF REDEMPTION HAS BEEN GIVEN ARE NO LONGER
OUTSTANDING. Provided a Notice of Redemption has been mailed pursuant to
subparagraph (c) of this paragraph 11, upon the deposit with the Auction Agent
(on the Business Day next preceding the date fixed for redemption thereby, in
funds available on the next Business Day in The City of New York, New York) of
funds sufficient to redeem the shares of Municipal Preferred that are the
subject of such notice, dividends on such shares shall cease to accumulate and
such shares shall no longer be deemed to be outstanding for any purpose, and all
rights of the Holders of the shares so called for redemption shall cease and
terminate, except the right of such Holders to receive the Redemption Price, but
without any interest or other additional amount, except as provided in
paragraphs 2(e)(i) and 3 of Part I of this Section 12.1. Upon surrender in
accordance with the Notice of Redemption of the certificates for any shares so
redeemed (properly endorsed or assigned for transfer, if the Board of Trustees
shall so require and the Notice of Redemption shall so state), the Redemption
Price shall be paid by the Auction Agent to the Holders of shares of Municipal
Preferred subject to redemption. In the case that fewer than all of the shares
represented by any such certificate are redeemed, a new certificate shall be
issued, representing the unredeemed shares, without cost to the Holder thereof.
The Trust shall be entitled to receive from the Auction Agent, promptly after
the date fixed for redemption, any cash deposited with the Auction Agent in
excess of (i) the aggregate Redemption Price of the shares of Municipal
Preferred called for redemption on such date and (ii) all other amounts to which
Holders of shares of Municipal Preferred called for redemption may be entitled.
Any funds so deposited that are unclaimed at the end of 90 days from such
redemption date shall, to the extent permitted by law, be repaid to the Trust,
after which time the Holders of shares of Municipal Preferred so called for
redemption may look only to the Trust for payment of the Redemption Price and
all other amounts to which they may be entitled. The Trust shall be entitled to
receive, from time to time after the date fixed for redemption, any interest on
the funds so deposited.

     (h) COMPLIANCE WITH APPLICABLE LAW. In effecting any redemption pursuant to
this paragraph 11, the Trust shall use its best efforts to comply with all
applicable conditions precedent to effecting such redemption under the 1940 Act
and any applicable Massachusetts law, but shall effect no redemption except in
accordance with the 1940 Act and any applicable Massachusetts law.

                                      -52-

<PAGE>   53



     (i) ONLY WHOLE SHARES OF MUNICIPAL PREFERRED MAY BE REDEEMED. In the case
of any redemption pursuant to this paragraph 11, only whole shares of Municipal
Preferred shall be redeemed, and in the event that any provision of the
Declaration or these By-laws would require redemption of a fractional share, the
Auction Agent shall be authorized to round up so that only whole shares are
redeemed.

     12. LIQUIDATION RIGHTS.

     (a) RANKING. The shares of a series of Municipal Preferred shall rank on a
parity with each other, with shares of any other series of Municipal Preferred
and with shares of any other series of Preferred Shares as to the distribution
of assets upon dissolution, liquidation or winding up of the affairs of the
Trust.

     (b) DISTRIBUTIONS UPON LIQUIDATION. Upon the dissolution, liquidation or
winding up of the affairs of the Trust, whether voluntary or involuntary, the
Holders of shares of Municipal Preferred then outstanding shall be entitled to
receive and to be paid out of the assets of the Trust available for distribution
to its shareholders, before any payment or distribution shall be made on the
Common Shares or on any other class of shares of the Trust ranking junior to the
Municipal Preferred upon dissolution, liquidation or winding up, an amount equal
to the Liquidation Preference with respect to such shares plus an amount equal
to all dividends thereon (whether or not earned or declared) accumulated but
unpaid to (but not including) the date of final distributions in same-day funds,
together with any payments required to be made pursuant to paragraph 3 of Part I
of this Section 12.1 in connection with the liquidation of the Trust. After the
payment to the Holders of the shares of Municipal Preferred of the full
preferential amounts provided for in this subparagraph (b), the holders of
Municipal Preferred as such shall have no right or claim to any of the remaining
assets of the Trust.

     (c) PRO RATA DISTRIBUTIONS. In the event the assets of the Trust available
for distribution to the Holders of shares of Municipal Preferred upon any
dissolution, liquidation or winding up of the affairs of the Trust, whether
voluntary or involuntary, shall be insufficient to pay in full all amounts to
which such Holders are entitled pursuant to subparagraph (b) of this paragraph
12, no such distribution shall be made on account of any shares of any other
class or series of Preferred Shares ranking on a parity with the shares of
Municipal Preferred with respect to the distribution of assets upon such
dissolution, liquidation or winding up unless proportionate distributive amounts
shall be paid on account of the shares of Municipal Preferred, ratably, in
proportion to the full distributable amounts for which holders of all such
parity shares are respectively entitled upon such dissolution, liquidation or
winding up.

     (d) RIGHTS OF JUNIOR SHARES. Subject to the rights of the holders of shares
of any series or class or classes of shares ranking on a parity with the shares
of Municipal Preferred with respect to the distribution of assets upon
dissolution, liquidation or winding up of the affairs of the Trust, after
payment shall have been made in full to the Holders of the shares of Municipal
Preferred as provided in subparagraph (b) of this paragraph 12, but not prior
thereto, any other series or class

                                      -53-

<PAGE>   54


or classes of shares ranking junior to the shares of Municipal Preferred with
respect to the distribution of assets upon dissolution, liquidation or winding
up of the affairs of the Trust shall, subject to the respective terms and
provisions (if any) applying thereto, be entitled to receive any and all assets
remaining to be paid or distributed, and the Holders of the shares of Municipal
Preferred shall not be entitled to share therein.

     (e) CERTAIN EVENTS NOT CONSTITUTING LIQUIDATION. Neither the sale of all or
substantially all of the property or business of the Trust, nor the merger or
consolidation of the Trust into or with any Massachusetts business trust or
corporation nor the merger or consolidation of any Massachusetts business trust
or corporation into or with the Trust shall be a dissolution, liquidation or
winding up, whether voluntary or involuntary, for the purposes of this paragraph
12.

     13. MISCELLANEOUS.

     (a) AMENDMENT OF THIS SECTION 12.1 TO ADD ADDITIONAL SERIES. Subject to the
provisions of subparagraph (c) of paragraph 10 of Part I of this Section 12.1,
the Board of Trustees may, by resolution duly adopted, without shareholder
approval (except as otherwise provided by this Section 12.1 or required by
applicable law), amend Section 12.1 to (1) reflect any amendment hereto which
the Board of Trustees is entitled to adopt pursuant to the terms of this Section
12.1 without shareholder approval or (2) add additional series of Municipal
Preferred or additional shares of a series of Municipal Preferred (and terms
relating thereto) to the series and shares of Municipal Preferred theretofore
described thereon. Each such additional series and all such additional shares
shall be governed by the terms of this Section 12.1.

     (b) [RESERVED]

     (c) NO FRACTIONAL SHARES. No fractional shares of Municipal Preferred shall
be issued.

     (d) STATUS OF SHARES OF MUNICIPAL PREFERRED REDEEMED, EXCHANGED OR
OTHERWISE ACQUIRED BY THE TRUST. Shares of Municipal Preferred which are
redeemed, exchanged or otherwise acquired by the Trust shall return to the
status of authorized and unissued Preferred Shares without designation as to
series.

     (e) BOARD MAY RESOLVE AMBIGUITIES. To the extent permitted by applicable
law, the Board of Trustees may interpret or adjust the provisions of this
Section 12.1 to resolve any inconsistency or ambiguity or to remedy any formal
defect, and may amend this Section 12.1 with respect to any series of Municipal
Preferred prior to this issuance of shares of such series.

     (f) HEADINGS NOT DETERMINATIVE. The headings contained in this Section 12.1
are for convenience of reference only and shall not affect the meaning or
interpretation of this Section 12.1.

                                      -54-

<PAGE>   55


     (g) NOTICES. All notices or communications, unless otherwise specified in
these By-Laws or this Section 12.1, shall be sufficiently given if in writing
and delivered in person or mailed by first-class mail, postage prepaid.

                                     PART II

     1. ORDERS.

     (a) Prior to the Submission Deadline on each Auction Date for shares of a
series of Municipal Preferred:

          (i) each Beneficial Owner of shares of such series may submit to its
     Broker-Dealer by telephone or otherwise information as to:

               (A) the number of Outstanding shares, if any, of such series held
          by such Beneficial Owner which such Beneficial Owner desires to
          continue to hold without regard to the Applicable Rate for shares of
          such series for the next succeeding Rate Period of such shares;

               (B) the number of Outstanding shares, if any, of such series held
          by such Beneficial Owner which such Beneficial Owner offers to sell if
          the Applicable Rate for shares of such series for the next succeeding
          Rate Period of shares of such series shall be less than the rate per
          annum specified by such Beneficial Owner; and/or

               (C) the number of Outstanding shares, if any, of such series held
          by such Beneficial Owner which such Beneficial Owner offers to sell
          without regard to the Applicable Rate for shares of such series for
          the next succeeding Rate Period of shares of such series;

and

          (ii) one or more Broker-Dealers, using lists of Potential Beneficial
     Owners, shall in good faith for the purpose of conducting a competitive
     Auction in a commercially reasonable manner, contact Potential Beneficial
     Owners (by telephone or otherwise), including Persons that are not
     Beneficial Owners, on such lists to determine the number of shares, if any,
     of such series which each such Potential Beneficial Owner offers to
     purchase if the Applicable Rate for shares of such series for the next
     succeeding Rate Period of shares of such series shall not be less than the
     rate per annum specified by such Potential Beneficial Owner.

For purposes hereof, the communication by a Beneficial Owner or Potential
Beneficial Owner to a Broker-Dealer, or by a Broker-Dealer to the Auction Agent,
of information referred to in

                                      -55-

<PAGE>   56


clause (i)(A), (i)(B), (i)(C) or (ii) of this subparagraph (a) is hereinafter
referred to as an "Order" and collectively as "Orders" and each Beneficial Owner
and each Potential Beneficial Owner placing an Order with a Broker-Dealer, and
such Broker-Dealer placing an Order with the Auction Agent, is hereinafter
referred to as a "Bidder" and collectively as "Bidders"; an Order containing the
information referred to in clause (i)(A) of this subparagraph (a) is hereinafter
referred to as a "Hold Order" and collectively as "Hold Orders"; an Order
containing the information referred to in clause (i)(B) or (ii) of this
subparagraph (a) is hereinafter referred to as a "Bid" and collectively as
"Bids"; and an Order containing the information referred to in clause (i)(C) of
this subparagraph (a) is hereinafter referred to as a "Sell Order" and
collectively as "Sell Orders."

     (b) (i) A Bid by a Beneficial Owner or an Existing Holder of shares of a
series of Municipal Preferred subject to an Auction on any Auction Date shall
constitute an irrevocable offer to sell:

               (A) the number of Outstanding shares of such series specified in
          such Bid if the Applicable Rate for shares of such series determined
          on such Auction Date shall be less than the rate specified therein;

               (B) such number or a lesser number of Outstanding shares of such
          series to be determined as set forth in paragraph 4(a)(iv) of Part II
          of this Section 12.1 if the Applicable Rate for shares of such series
          determined on such Auction Date shall be equal to the rate specified
          therein; or

               (C) the number of Outstanding shares of such series specified in
          such Bid if the rate specified therein shall be higher than the
          Maximum Rate for shares of such series, or such number or a lesser
          number of Outstanding shares of such series to be determined as set
          forth in paragraph 4(b)(iii) of Part II of this Section 12.1 if the
          rate specified therein shall be higher than the Maximum Rate for
          shares of such series and Sufficient Clearing Bids for shares of such
          series do not exist.

          (ii) A Sell Order by a Beneficial Owner or an Existing Holder of
     shares of a series of Municipal Preferred subject to an Auction on any
     Auction Date shall constitute an irrevocable offer to sell:

               (A) the number of Outstanding shares of such series specified in
          such Sell Order; or

               (B) such number or a lesser number of Outstanding shares of such
          series as set forth in paragraph 4(b)(iii) of Part II of this Section
          12.1 if Sufficient Clearing Bids for shares of such series do not
          exist;

                                      -56-

<PAGE>   57



          provided, however, that a Broker-Dealer that is an Existing Holder
          with respect to shares of a series of Municipal Preferred shall not be
          liable to any Person for failing to sell such shares pursuant to a
          Sell Order described in the proviso to paragraph 2(c) of Part II of
          this Section 12.1 if (1) such shares were transferred by the
          Beneficial Owner thereof without compliance by such Beneficial Owner
          or its transferee Broker-Dealer (or other transferee person, if
          permitted by the Trust) with the provisions of paragraph 7 of Part II
          of this Section 12.1 or (2) such Broker-Dealer has informed the
          Auction Agent pursuant to the terms of its Broker-Dealer Agreement
          that, according to such Broker-Dealer's records, such Broker-Dealer
          believes it is not the Existing Holder of such shares.

          (iii) A Bid by a Potential Beneficial Holder or a Potential Holder of
     shares of a series of Municipal Preferred subject to an Auction on any
     Auction Date shall constitute an irrevocable offer to purchase:

               (A) the number of Outstanding shares of such series specified in
          such Bid if the Applicable Rate for shares of such series determined
          on such Auction Date shall be higher than the rate specified therein;
          or

               (B) such number or a lesser number of Outstanding shares of such
          series as set forth in paragraph 4(a)(v) of Part II of this Section
          12.1 if the Applicable Rate for shares of such series determined on
          such Auction Date shall be equal to the rate specified therein.

     (c) No Order for any number of shares of Municipal Preferred other than
whole shares shall be valid.

     2. SUBMISSION OF ORDERS BY BROKER-DEALERS TO AUCTION AGENT.

     (a) Each Broker-Dealer shall submit in writing to the Auction Agent prior
to the Submission Deadline on each Auction Date all Orders for shares of
Municipal Preferred of a series subject to an Auction on such Auction Date
obtained by such Broker-Dealer, designating itself (unless otherwise permitted
by the Trust) as an Existing Holder in respect of shares subject to Orders
submitted or deemed submitted to it by Beneficial Owners and as a Potential
Holder in respect of shares subject to Orders submitted to it by Potential
Beneficial Owners, and shall specify with respect to each Order for such shares:

          (i) the name of the Bidder placing such Order (which shall be the
     Broker-Dealer unless otherwise permitted by the Trust);

          (ii) the aggregate number of shares of such series that are the
     subject of such Order;

          (iii) to the extent that such Bidder is an Existing Holder of shares
     of such series:

                                      -57-

<PAGE>   58


               (A) the number of shares, if any, of such series subject to any
          Hold Order of such Existing Holder;

               (B) the number of shares, if any, of such series subject to any
          Bid of such Existing Holder and the rate specified in such Bid; and

               (C) the number of shares, if any, of such series subject to any
          Sell Order of such Existing Holder; and

          (iv) to the extent such Bidder is a Potential Holder of shares of such
     series, the rate and number of shares of such series specified in such
     Potential Holder's Bid.

     (b) If any rate specified in any Bid contains more than three figures to
the right of the decimal point, the Auction Agent shall round such rate up to
the next highest one thousandth (.001) of 1%.

     (c) If an Order or Orders covering all of the Outstanding shares of
Municipal Preferred of a series held by any Existing Holder is not submitted to
the Auction Agent prior to the Submission Deadline, the Auction Agent shall deem
a Hold Order to have been submitted by or on behalf of such Existing Holder
covering the number of Outstanding shares of such series held by such Existing
Holder and not subject to Orders submitted to the Auction Agent; provided,
however, that if an Order or Orders covering all of the Outstanding shares of
such series held by any Existing Holder is not submitted to the Auction Agent
prior to the Submission Deadline for an Auction relating to a Special Rate
Period consisting of more than 28 Rate Period Days, the Auction Agent shall deem
a Sell Order to have been submitted by or on behalf of such Existing Holder
covering the number of outstanding shares of such series held by such Existing
Holder and not subject to Orders submitted to the Auction Agent.

     (d) If one or more Orders of an Existing Holder is submitted to the Auction
Agent covering in the aggregate more than the number of Outstanding shares of
Municipal Preferred of a series subject to an Auction held by such Existing
Holder, such Orders shall be considered valid in the following order of
priority:

          (i) all Hold Orders for shares of such series shall be considered
     valid, but only up to and including in the aggregate the number of
     Outstanding shares of such series held by such Existing Holder, and if the
     number of shares of such series subject to such Hold Order exceeds the
     number of Outstanding shares of such series held by such Existing Holder,
     the number of shares subject to each such Hold Order shall be reduced pro
     rata to cover the number of Outstanding shares of such series held by such
     Existing Holder;

          (ii) (A) any Bid for shares of such series shall be considered valid
     up to and

                                      -58-

<PAGE>   59


     including the excess of the number of Outstanding shares of such
     series held by such Existing Holder over the number of shares of such
     series subject to any Hold Orders referred to in clause (i) above;

                           (B) subject to subclause (A), if more than one Bid of
                  an Existing Holder for shares of such series is submitted to
                  the Auction Agent with the same rate and the number of
                  Outstanding shares of such series subject to such Bids is
                  greater than such excess, such Bids shall be considered valid
                  up to and including the amount of such excess, and the number
                  of shares of such series subject to each Bid with the same
                  rate shall be reduced pro rata to cover the number of shares
                  of such series equal to such excess;

                           (C) subject to subclauses (A) and (B), if more than
                  one Bid of an Existing Holder for shares of such series is
                  submitted to the Auction Agent with different rates, such Bids
                  shall be considered valid in the ascending order of their
                  respective rates up to and including the amount of such
                  excess; and

                           (D) in any such event, the number, if any, of such
                  Outstanding shares of such series subject to any portion of
                  Bids considered not valid in whole or in part under this
                  clause (ii) shall be treated as the subject of a Bid for
                  shares of such series by or on behalf of a Potential Holder at
                  the rate therein specified; and

          (iii) all Sell Orders for shares of such series shall be considered
     valid up to and including the excess of the number of Outstanding shares of
     such series held by such Existing Holder over the sum of shares of such
     series subject to valid Hold Orders referred to in clause (i) above and
     valid Bids referred to in clause (ii) above.

     (e) If more than one Bid for one or more shares of a series of Municipal
Preferred is submitted to the Auction Agent by or on behalf of any Potential
Holder, each such Bid submitted shall be a separate Bid with the rate and number
of shares therein specified.

     (f) Any Order submitted by a Beneficial Owner or a Potential Beneficial
Owner to its Broker-Dealer, or by a Broker-Dealer to the Auction Agent, prior to
the Submission Deadline on any Auction Date, shall be irrevocable.

     3. DETERMINATION OF SUFFICIENT CLEARING BIDS, WINNING BID RATE AND
APPLICABLE RATE.

     (a) Not earlier than the Submission Deadline on each Auction Date for
shares of a series of Municipal Preferred, the Auction Agent shall assemble all
valid Orders submitted or deemed submitted to it by the Broker-Dealers in
respect of shares of such series (each such Order as submitted or deemed
submitted by a Broker-Dealer being hereinafter referred to individually as a
"Submitted Hold Order," a "Submitted Bid" or a "Submitted Sell Order," as the
case may be, or as a "Submitted Order," and collectively as "Submitted Hold
Orders," "Submitted Bids" or


                                      -59

<PAGE>   60

"Submitted Sell Orders," as the case may be, or as "Submitted Orders") and shall
determine for such series:

          (i) the excess of the number of Outstanding shares of such series over
     the number of Outstanding shares of such series subject to Submitted Hold
     Orders (such excess being hereinafter referred to as the "Available
     Municipal Preferred" of such series);

          (ii) from the Submitted Orders for shares of such series whether:

               (A) the number of Outstanding shares of such series subject to
          Submitted Bids of Potential Holders specifying one or more rates equal
          to or lower than the Maximum Rate for shares of such series;

          exceeds or is equal to the sum of:

               (B) the number of Outstanding shares of such series subject to
          Submitted Bids of Existing Holders specifying one or more rates higher
          than the Maximum Rate for shares of such series; and

               (C) the number of Outstanding shares of such series subject to
          Submitted Sell Orders

          (in the event such excess or such equality exists (other than because
          the number of shares of such series in subclauses (B) and (C) above is
          zero because all of the Outstanding shares of such series are subject
          to Submitted Hold Orders), such Submitted Bids in subclause (A) above
          being hereinafter referred to collectively as "Sufficient Clearing
          Bids" for shares of such series); and

          (iii) if Sufficient Clearing Bids for shares of such series exist, the
     lowest rate specified in such Submitted Bids (the "Winning Bid Rate" for
     shares of such series) which if:

               (A) (I) each such Submitted Bid of Existing Holders specifying
          such lowest rate and (II) all other such Submitted Bids of Existing
          Holders specifying lower rates were rejected, thus entitling such
          Existing Holders to continue to hold the shares of such series that
          are subject to such Submitted Bids; and

               (B) (I) each such Submitted Bid of Potential Holders specifying
          such lowest rate and (II) all other such Submitted Bids of Potential
          Holders specifying lower rates were accepted;

     would result in such Existing Holders described in subclause (A) above
     continuing to hold an aggregate number of Outstanding shares of such series
     which, when added to the

                                      -60-

<PAGE>   61


     number of Outstanding shares of such series to be purchased by such
     Potential Holders described in subclause (B) above, would equal not less
     than the Available Municipal Preferred of such series.

     (b) Promptly after the Auction Agent has made the determinations pursuant
to subparagraph (a) of this paragraph 3, the Auction Agent shall advise the
Trust of the Maximum Rate for shares of the series of Municipal Preferred for
which an Auction is being held on the Auction Date and, based on such
determination, the Applicable Rate for shares of such series for the next
succeeding Rate Period thereof as follows:

          (i) if Sufficient Clearing Bids for shares of such series exist, that
     the Applicable Rate for all shares of such series for the next succeeding
     Rate Period thereof shall be equal to the Winning Bid Rate for shares of
     such series so determined;

          (ii) if Sufficient Clearing Bids for shares of such series do not
     exist (other than because all of the Outstanding shares of such series are
     subject to Submitted Hold Orders), that the Applicable Rate for all shares
     of such series for the next succeeding Rate Period thereof shall be equal
     to the Maximum Rate for shares of such series; or

          (iii) if all of the Outstanding shares of such series are subject to
     Submitted Hold Orders, that the Applicable Rate for all shares of such
     series for the next succeeding Rate Period thereof shall be as set forth in
     subparagraph (c) of this paragraph 3.

     (c) For purposes of subparagraph (b)(iii) of this paragraph 3, the
Applicable Rate for shares of such series for the next succeeding Rate Period of
shares of such series shall be equal to the lesser of the Kenny Index (if such
Rate Period consists of fewer than 183 Rate Period Days) or the product of (A)
(I) the "AA" Composite Commercial Paper Rate on such Auction Date for such Rate
Period, if such Rate Period consists of fewer than 183 Rate Period Days; (II)
the Treasury Bill Rate on such Auction Date for such Rate Period, if such Rate
Period consists of more than 182 but fewer than 365 Rate Period Days; or (III)
the Treasury Note Rate on such Auction Date for such Rate Period, if such Rate
Period is more than 364 Rate Period Days (the rate described in the foregoing
clause (A)(I), (II) or (III), as applicable, being referred to herein as the
"Benchmark Rate") and (B) 1 minus the greater of the maximum marginal regular
Federal individual income tax rate applicable to ordinary income or the maximum
marginal regular Federal corporate income tax rate applicable to ordinary
income; provided, however, that if the Trust has notified the Auction Agent of
its intent to allocate to shares of such series in such Rate Period any net
capital gains or other income taxable for Federal income tax purposes ("Taxable
Income"), the Applicable Rate for shares of such series for such Rate Period
will be (i) if the Taxable Yield Rate (as defined below) is greater than the
Benchmark Rate, then the Benchmark Rate, or (ii) if the Taxable Yield Rate is
less than or equal to the Benchmark Rate, then the rate equal to the sum of (x)
the lesser of the Kenny Index (if such Rate Period consists of fewer than 183
Rate Period Days) or the product of the Benchmark Rate multiplied by the factor
set forth in the preceding clause (B) and (y) the product of the maximum
marginal regular Federal individual income tax


                                      -61-

<PAGE>   62


rate applicable to ordinary income or the maximum marginal regular Federal
corporate income tax applicable to ordinary income, whichever is greater,
multiplied by the Taxable Yield Rate. For purposes of the foregoing, "Taxable
Yield Rate" means the rate determined by (a) dividing the amount of Taxable
Income available for distribution per such share of Municipal Preferred by the
number of days in the Dividend Period in respect of which such Taxable Income is
contemplated to be distributed, (b) multiplying the amount determined in (a)
above by 365 (in the case of a Dividend Period of 7 Rate Period Days) or 360 (in
the case of any other Dividend Period), and (c) dividing the amount determined
in (b) above by $25,000.

     4. ACCEPTANCE AND REJECTION OF SUBMITTED BIDS AND SUBMITTED SELL ORDERS AND
ALLOCATION OF SHARES. Existing Holders shall continue to hold the shares of
Municipal Preferred that are subject to Submitted Hold Orders, and, based on the
determinations made pursuant to subparagraph (a) of paragraph 3 of Part II of
this Section 12.1, the Submitted Bids and Submitted Sell Orders shall be
accepted or rejected by the Auction Agent and the Auction Agent shall take such
other action as set forth below:

     (a) If Sufficient Clearing Bids for shares of a series of Municipal
Preferred have been made, all Submitted Sell Orders with respect to shares of
such series shall be accepted and, subject to the provisions of subparagraphs
(d) and (e) of this paragraph 4, Submitted Bids with respect to shares of such
series shall be accepted or rejected as follows in the following order of
priority and all other Submitted Bids with respect to shares of such series
shall be rejected:

          (i) Existing Holders' Submitted Bids for shares of such series
     specifying any rate that is higher than the Winning Bid Rate for shares of
     such series shall be accepted, thus requiring each such Existing Holder to
     sell the shares of Municipal Preferred subject to such Submitted Bids;

          (ii) Existing Holders' Submitted Bids for shares of such series
     specifying any rate that is lower than the Winning Bid Rate for shares of
     such series shall be rejected, thus entitling each such Existing Holder to
     continue to hold the shares of Municipal Preferred subject to such
     Submitted Bids;

          (iii) Potential Holders' Submitted Bids for shares of such series
     specifying any rate that is lower than the Winning Bid Rate for shares of
     such series shall be accepted;

          (iv) each Existing Holders' Submitted Bid for shares of such series
     specifying a rate that is equal to the Winning Bid Rate for shares of such
     series shall be rejected, thus entitling such Existing Holder to continue
     to hold the share of Municipal Preferred subject to such Submitted Bid,
     unless the number of Outstanding shares of Municipal Preferred subject to
     all such Submitted Bids shall be greater than the number of shares of
     Municipal Preferred ("remaining shares") in the excess of the Available
     Municipal Preferred of such series over the number of shares of Municipal
     Preferred subject to Submitted Bids described in clauses (ii) and (iii) of
     this subparagraph (a), in which event such Submitted

                                      -62-

<PAGE>   63


     Bid of such Existing Holder shall be rejected in part, and such Existing
     Holder shall be entitled to continue to hold shares of Municipal Preferred
     subject to such Submitted Bid, but only in an amount equal to the number of
     shares of Municipal Preferred of such series obtained by multiplying the
     number of remaining shares by a fraction, the numerator of which shall be
     the number of Outstanding shares of Municipal Preferred held by such
     Existing Holder subject to such Submitted Bid and the denominator of which
     shall be the aggregate number of Outstanding shares of Municipal Preferred
     subject to such Submitted Bids made by all such Existing Holders that
     specified a rate equal to the Winning Bid Rate for shares of such series;
     and

          (v) each Potential Holder's Submitted Bid for shares of such series
     specifying a rate that is equal to the Winning Bid Rate of shares of such
     series shall be accepted but only in an amount equal to the number of
     shares of such series obtained by multiplying the number of shares in the
     excess of the Available Municipal Preferred of such series over the number
     of shares of Municipal Preferred subject to Submitted Bids described in
     clauses (ii) through (iv) of this subparagraph (a) by a fraction, the
     numerator of which shall be the number of Outstanding shares of Municipal
     Preferred subject to such Submitted Bids and the denominator of which shall
     be the aggregate number of Outstanding shares of Municipal Preferred
     subject to such Submitted Bids made by all such Potential Holders that
     specified a rate equal to the Winning Bid Rate for shares of such series.

     (b) If Sufficient Clearing Bids for shares of a series of Municipal
Preferred have not been made (other than because all of the Outstanding shares
of such series are subject to Submitted Hold Orders), subject to the provisions
of subparagraph (d) of this paragraph 4, Submitted Orders for shares of such
series shall be accepted or rejected as follows in the following order of
priority and all other Submitted Bids for shares of such series shall be
rejected:

          (i) Existing Holders' Submitted Bids for shares of such series
     specifying any rate that is equal to or lower than the Maximum Rate for
     shares of such series shall be rejected, thus entitling such Existing
     Holders to continue to hold the shares of Municipal Preferred subject to
     such Submitted Bids;

          (ii) Potential Holders' Submitted Bids for shares of such series
     specifying any rate that is equal to or lower than the Maximum Rate for
     shares of such series shall be accepted; and

          (iii) Each Existing Holder's Submitted Bid for shares of such series
     specifying any rate that is higher than the Maximum Rate for shares of such
     series and the Submitted Sell Orders for shares of such series of each
     Existing Holder shall be accepted, thus entitling each Existing Holder that
     submitted or on whose behalf was submitted any such Submitted Bid or
     Submitted Sell Order to sell the shares of such series subject to such
     Submitted Bid or Submitted Sell Order, but in both cases only in an amount
     equal to the number of shares of such series obtained by multiplying the
     number of shares of such

                                      -63-

<PAGE>   64


     series subject to Submitted Bids described in clause (ii) of this
     subparagraph (b) by a fraction, the numerator of which shall be the number
     of Outstanding shares of such series held by such Existing Holder subject
     to such Submitted Bid or Submitted Sell Order and the denominator of which
     shall be the aggregate number of Outstanding shares of such series subject
     to all such Submitted Bids and Submitted Sell Orders.

     (c) If all of the Outstanding shares of a series of Municipal Preferred are
subject to Submitted Hold Orders, all Submitted Bids for shares of such series
shall be rejected.

     (d) If, as a result of the procedures described in clause (iv) or (v) of
subparagraph (a) or clause (iii) of subparagraph (b) of this paragraph 4, any
Existing Holder would be entitled or required to sell, or any Potential Holder
would be entitled or required to purchase, a fraction of a share of a series of
Municipal Preferred on any Auction Date, the Auction Agent shall, in such manner
as it shall determine in its sole discretion, round up or down the number of
shares of Municipal Preferred of such series to be purchased or sold by any
Existing Holder or Potential Holder on such Auction Date as a result of such
procedures so that the number of shares so purchased or sold by each Existing
Holder or Potential Holder on such Auction Date shall be whole shares of
Municipal Preferred.

     (e) If, as a result of the procedures described in clause (v) of paragraph
(a) of this paragraph 4, any Potential Holder would be entitled or required to
purchase less than a whole share of series of Municipal Preferred on any Auction
Date, the Auction Agent shall, in such manner as it shall determine in its sole
discretion, allocate shares of Municipal Preferred of such series for purchase
among Potential Holders so that only whole shares of Municipal Preferred of such
series are purchased on such Auction Date as a result of such procedures by any
Potential Holder, even if such allocation results in one or more Potential
Holders not purchasing shares of Municipal Preferred of such series on such
Auction Date.

     (f) Based on the results of each Auction for shares of a series of
Municipal Preferred, the Auction Agent shall determine the aggregate number of
shares of such series to be purchased and the aggregate number of shares of such
series to be sold by Potential Holders and Existing Holders and, with respect to
each Potential Holder and Existing Holder, to the extent that such aggregate
number of shares to be purchased and such aggregate number of shares to be sold
differ, determine to which other Potential Holder(s) or Existing Holder(s) they
shall deliver, or from which other Potential Holder(s) or Existing Holder(s)
they shall receive, as the case may be, shares of Municipal Preferred of such
series. Notwithstanding any provision of the Auction Procedures or the
Settlement Procedures to the contrary, in the event an Existing Holder or
Beneficial Owner of shares of a series of Municipal Preferred with respect to
whom a Broker-Dealer submitted a Bid to the Auction Agent for such shares that
was accepted in whole or in part, or submitted or is deemed to have submitted a
Sell Order for such shares that was accepted in whole or in part, fails to
instruct its Agent Member to deliver such shares against payment therefor,
partial deliveries of shares of Municipal Preferred that have been made in
respect of Potential Holders' or Potential Beneficial Owners' Submitted Bids for
shares of such series that


                                      -64-

<PAGE>   65

have been accepted in whole or in part shall constitute good delivery to such
Potential Holders and Potential Beneficial Owners.

     (g) Neither the Trust nor the Auction Agent nor any affiliate of either
shall have any responsibility or liability with respect to the failure of an
Existing Holder, a Potential Holder, a Benefit Owner, a Potential Beneficial
Owner or its respective Agent Member to deliver shares of Municipal Preferred of
any series or to pay for shares of Municipal Preferred of any series sold or
purchased pursuant to the Auction Procedures or otherwise.

     5. NOTIFICATION OF ALLOCATIONS. Whenever the Trust intends to include any
net capital gain or other income taxable for Federal income tax purposes in any
dividend on shares of Municipal Preferred, the Trust shall, in the case of a
Minimum Rate Period or a Special Rate Period of 28 Rate Period Days or fewer,
and may, in the case of any other Special Rate Period, notify the Auction Agent
of the amount to be so included not later than the Dividend Payment Date next
preceding the Auction Date on which the Applicable Rate for such dividend is to
be established. Whenever the Auction Agent receives such notice from the Trust,
it will be required in turn to notify each Broker-Dealer, who, on or prior to
such Auction Date, in accordance with its Broker-Dealer Agreement, will be
required to notify its Beneficial Owners and Potential Beneficial Owners of
shares of Municipal Preferred believed by it to be interested in submitting an
Order in the Auction to be held on such Auction Date.

     6. AUCTION AGENT. For so long as any shares of Municipal Preferred are
outstanding, the Auction Agent, duly appointed by the Trust to so act, shall be
in each case a commercial bank, trust company or other financial institution
independent of the Trust and its affiliates (which however, may engage or have
engaged in business transactions with the Trust or its affiliates) and at no
time shall the Trust or any of its affiliates act as the Auction Agent in
connection with the Auction Procedures. If the Auction Agent resigns or for any
reason its appointment is terminated during any period that any shares of
Municipal Preferred are outstanding, the Board of Trustees shall use its best
efforts promptly thereafter to appoint another qualified commercial bank, trust
company or financial institution to act as the Auction Agent. The Auction
Agent's registry of Existing Holders of shares of a series of Municipal
Preferred shall be conclusive and binding on the Broker-Dealers. A Broker-Dealer
may inquire of the Auction Agent between 3:00 p.m. on the Business Day preceding
an Auction for shares of a series of Municipal Preferred and 9:30 a.m. on the
Auction Date for such Auction to ascertain the number of shares of a series in
respect of which the Auction Agent has determined such Broker-Dealer to be an
Existing Holder. If such Broker-Dealer believes it is the Existing Holder of
fewer shares of such series than specified by the Auction Agent in response to
such Broker-Dealer's inquiry, such Broker-Dealer may so inform the Auction Agent
of that belief. Such Broker-Dealer shall not, in its capacity as Existing Holder
of shares of such series, submit Orders in such Auction in respect of shares of
such series covering in the aggregate more than the number of shares of such
series specified by the Auction Agent in response to such Broker-Dealer's
inquiry.

                                      -65-

<PAGE>   66

     7. TRANSFER OF SHARES OF MUNICIPAL PREFERRED. Unless otherwise permitted by
the Trust, a Beneficial Owner or an Existing Holder may sell, transfer or
otherwise dispose of shares of Municipal Preferred only in whole shares and only
pursuant to a Bid or Sell Order placed with the Auction Agent in accordance with
the procedures described in Part II of this Section 12.1 or to a Broker-Dealer;
provided, however, that (a) a sale, transfer or other disposition of shares of
Municipal Preferred from a customer of a Broker-Dealer who is listed on the
records of that Broker-Dealer as the holder of such shares to that Broker-Dealer
or another customer of that Broker-Dealer shall not be deemed to be a sale,
transfer or other disposition for purposes of this paragraph 7 if such
Broker-Dealer remains the Existing Holder of the shares so sold, transferred or
disposed of immediately after such sale, transfer or disposition and (b) in the
case of all transfers other than pursuant to Auctions, the Broker-Dealer (or
other Person, if permitted by the Trust) to whom such transfer is made shall
advise the Auction Agent of such transfer.

     8. GLOBAL CERTIFICATE. Prior to the commencement of a Voting Period, (i)
all of the shares of a series of Municipal Preferred outstanding from time to
time shall be represented by one global certificate registered in the name of
the Securities Depository or its nominee and (ii) no registration of transfer of
shares of a series of Municipal Preferred shall be made on the books of the
Trust to any Person other than the Securities Depository or its nominee.


                                   Article 13.
                                   AMENDMENTS

     Except as otherwise expressly stated herein, these By-Laws may be amended
or replaced, in whole or in part, by a majority of the Trustees then in office
at any meeting of the Trustees, or by one or more writings signed by such a
majority.



                                      -66-

<PAGE>   1
                                                                  Exhibit (d)(2)


                   MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED
                   SHARE(S) OF BENEFICIAL INTEREST, SERIES M

Number
U                                NO PAR VALUE
                     $25,000 Liquidation Preference per Share

                  THIS CERTIFICATE IS TRANSFERABLE
                    IN BOSTON OR IN NEW YORK CITY          CUSIP
                                                           SEE REVERSE FOR
                                                           CERTAIN DEFINITIONS

                   COLONIAL INVESTMENT GRADE MUNICIPAL TRUST
                            SHARE CERTIFICATE

        S        P        E        C        I        M        E        N

THIS
CERTIFIES
THAT                Cede & Co.

IS THE
OWNER OF            *Two Thousand Four Hundred* (2,400)

FULLY PAID AND NON-ASSESSABLE MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES
OF BENEFICIAL INTEREST, SERIES M, NO PAR VALUE, $25,000 LIQUIDATION
                        PREFERENCE PER SHARE, OF

Colonial Investment Grade Municipal Trust, the said shares being issued,
received and held under and subject to the terms and provisions of the Agreement
and Declaration of Trust dated as of March 16, 1989, establishing Colonial
Investment Grade Municipal Trust, and all amendments thereto, copies of which
are on file with the Secretary of the Commonwealth of Massachusetts, and to the
terms and provisions of the Amended and Restated By-Laws of Colonial Investment
Grade Municipal Trust, copies of which are on file with the Secretary of the
Trust. The said owner by accepting this certificate agrees to and is bound by
all of the said terms and provisions. The shares represented hereby are only
transferable in writing by the owner thereof in person or by attorney upon
surrender of this certificate to the Trustees properly endorsed for transfer.
This certificate is executed on behalf of the Trustees of the Trust as Trustees
and not individually and the obligations hereof are not binding upon any of the
Trustees, officers or shareholders of the Trust individually but are binding
only upon the assets and property of the Trust. This certificate is not valid
until countersigned and registered by the Transfer Agent and Registrar.

Witness  the  facsimile  seal  of the  Trust  and the
facsimile signatures of its duly authorized officers.

Dated:
Countersigned and Registered:



<PAGE>   2


BANKERS TRUST COMPANY
                           (Boston, Massachusetts)   Transfer Agent
                                                     and Registrar
BY

Authorized Signature.     TREASURER        PRESIDENT

EXPLANATION OF ABBREVIATIONS

The following  abbreviations  when used in the form of ownership on the
face of this  certificate  shall be construed as though they were written out in
full according to applicable laws or regulations.
Abbreviations in addition to those appearing below, may be used.

Abbreviation      Equivalent            Abbreviation       Equivalent
- ------------      ----------            ------------       ----------
JT TEN           As joint tenants,      TEN IN COM         As tenants in common
                 with right of          TEN BY ENT         As tenants by the
                 survivorship and                            entireties
                 not as tenants         UNIF TRANSFERS     Uniform Transfers to
                 in common              MIN ACT              Minors Act

Abbreviation      Equivalent            Abbreviation       Equivalent
- ------------      -----------           ------------       -----------
ADM               Administrator(s)      FDN                Foundation
                  Administratrix        PL                 Public Law
AGMT              Agreement             TR                 (As) trustees(s),
                                                           for, of
CUST              Custodian for         UA                 Under Agreement
EST               Estate, Of estate of  UW                 Under will of, Of
                                                             will of,
EX                Executor(s), Executrix                   Under last will &
FBO               For the benefit of                        Testament

 Additional  abbreviations  may also be used  though  not in the above list.
 ---------------------------------------------------------------------------
                                              TRANSFER FORM

FOR VALUE RECEIVED, _________________________________ hereby sell,
assign and transfer unto          (I/We)

PLEASE INSERT SOCIAL SECURITY OR OTHER
     IDENTIFYING NUMBER OF ASSIGNEE
- -------------------------------------------

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

- ------------------------------------------------------------------
Please print or typewrite name and address (including postal zip
  code of assignee)

___________________________________________________________________Shares
represented by this Certificate and do hereby irrevocably constitute and appoint

_____________________________________________________________________Attorney,
to transfer said shares on the books of the Trust with full


<PAGE>   3

power of substitution in the premises.

Dated:

SIGNATURE GUARANTEED BY       Signature(s)_________________________________
                                      (The signature to this assignment must
                                       correspond with the name as
                                       written upon the face of this
                                       Certificate in every
                                       particular, without alteration or
                                       enlargement or any change
                                       whatsoever. If more than one owner,
                                       all must sign.)

- -------------------------------------------------------------------------
(Signature  must be guaranteed  by a commercial  bank or trust company or
 member firm of any national stock exchange.)

                                IMPORTANT NOTICE:

     When you sign your name to the Transfer Form without filling in the name of
your "Assignee" this certificate becomes fully negotiable, similar to a check
endorsed in blank. Therefore, to safeguard a signed certificate, it is
recommended that you fill in the name of the new owner in the "Assignee" space.

     Alternatively, instead of using this Transfer Form, you may sign a separate
"stock power" form and then mail the unsigned certificate and the signed "stock
power" in separate envelopes. For added protection, use registered mail for a
certificate.


<PAGE>   1
                                                                     Exhibit (h)


               Municipal Auction Rate Cumulative Preferred Shares


                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST

                             2,400 Shares, Series M

                    Liquidation Preference $25,000 Per Share

                             UNDERWRITING AGREEMENT


                                                                 August __, 1999

SALOMON SMITH BARNEY INC.
388 Greenwich Street
New York, New York 10013

Ladies and Gentlemen:

                  Colonial Investment Grade Municipal Trust, a Massachusetts
business trust (the "Trust"), proposes, upon the terms and conditions set forth
herein, to issue and sell an aggregate of 2,400 shares of its Municipal Auction
Rate Cumulative Preferred Shares, Series M (the "Municipal Preferred"), each
with a liquidation preference of $25,000 per share (the shares of Municipal
Preferred to be sold hereby are referred to herein, collectively, as the
"Shares"). The Shares will be authorized by, and subject to the terms and
conditions of, the Amended and Restated By-Laws of the Trust in the form filed
as an exhibit to the Registration Statement referred to in Section 1 of this
agreement. The Trust and its investment adviser, Colonial Management Associates,
Inc., (the "Advisor"), wish to confirm as follows their agreement with Salomon
Smith Barney Inc. (the "Underwriter") in connection with the purchase of the
Shares by the Underwriter.

                  Collectively, (i) the Management Agreement, dated as of March
27, 1995, between the Trust and the Advisor (the "Management Agreement"), (ii)
the Custodian Agreement, dated as of August 17, 1997, between the Trust and The
Chase Manhattan Bank, as amended, (iii) the Auction Agency Agreement, to be
dated as of August __, 1999, between the Trust and Bankers Trust Company and
(iv) the Broker-Dealer Agreement, to be dated as of August __, 1999, between the
Trust and Salomon Smith Barney Inc. are hereinafter referred to as the "Trust
Agreements". This Underwriting Agreement is hereinafter referred to as the
"Agreement".

                  1. REGISTRATION STATEMENT AND PROSPECTUS. The Trust has
prepared in conformity with the provisions of the Securities Act of 1933, as
amended (the "1933 Act"), the Investment




<PAGE>   2


                                                                               2


Company Act of 1940, as amended (the "1940 Act"), and the rules and regulations
of the Securities and Exchange Commission (the "Commission") promulgated under
the 1933 Act (the "1933 Act Rules and Regulations") and the 1940 Act (the "1940
Act Rules and Regulations" and, together with the 1933 Act Rules and
Regulations, the "Rules and Regulations") a registration statement on Form N-2,
as amended (File No. 333-81131 and 811-5785), under the 1933 Act and the 1940
Act (the "registration statement"), including a prospectus relating to the
Shares, and has filed the registration statement and prospectus in accordance
with the 1933 Act and 1940 Act. The Trust also has filed a notification of
registration of the Trust as an investment company under the 1940 Act on Form
N-8A (the "1940 Act Notification"). The term "Registration Statement" as used in
this Agreement means the registration statement (including all financial
schedules and exhibits), as amended at the time it becomes effective under the
1933 Act or, if the registration statement became effective under the 1933 Act
prior to the execution of this Agreement, as amended or supplemented at the time
it became effective, prior to the execution of this Agreement. If it is
contemplated, at the time this Agreement is executed, that a post-effective
amendment to the registration statement will be filed under the 1933 Act and
must be declared effective before the offering of the Shares may commence, the
term "Registration Statement" as used in this Agreement means the registration
statement as amended by said post-effective amendment. If the Trust has filed an
abbreviated registration statement to register an additional amount of Shares
pursuant to Rule 462(b) under the 1933 Act (the "Rule 462 Registration
Statement"), then any reference herein to the term "Registration Statement"
shall include such Rule 462 Registration Statement. The term "Prospectus" as
used in this Agreement means the prospectus and statement of additional
information in the forms included in the Registration Statement or, if the
prospectus and statement of additional information included in the Registration
Statement omit information in reliance on Rule 430A under the 1933 Act Rules and
Regulations and such information is included in a prospectus and statement of
additional information filed with the Commission pursuant to Rule 497 under the
1933 Act, the term "Prospectus" as used in this Agreement means the prospectus
and statement of additional information in the forms included in the
Registration Statement as supplemented by the addition of the information
contained in the prospectus filed with the Commission pursuant to Rule 497. The
term "Prepricing Prospectus" as used in this Agreement means the prospectus and
statement of additional information subject to completion in the forms included
in the registration statement at the time of filing of amendment no.1 to the
registration statement with the Commission on August __, 1999, and as such
prospectus and statement of additional information shall have been amended from
time to time prior to the date of the Prospectus, together with any other
prospectus and statement of additional information relating to the Trust other
than the Prospectus approved in writing by or directly or indirectly prepared by
the Trust or the Advisor; it being understood that the definition of Prepricing
Prospectus above shall not include any Prepricing Prospectus prepared by the
Underwriter unless approved in writing by the Trust or the Advisor. The terms
"Registration Statement", "Prospectus" and "Prepricing Prospectus" shall also
include any financial statements incorporated by reference therein.

                  The Trust has furnished the Underwriter with copies of such
registration statement, each amendment to such registration statement filed with
the Commission and each Prepricing Prospectus.




<PAGE>   3


                                                                               3


                  2. AGREEMENTS TO SELL AND PURCHASE. The Trust hereby agrees,
subject to all the terms and conditions set forth herein, to issue and sell to
the Underwriter and, upon the basis of the representations, warranties and
agreements of the Trust and the Advisor herein contained and subject to all the
terms and conditions set forth herein, the Underwriter agrees to purchase from
the Trust, at a purchase price of $[ ] per Share, the number of shares of
Municipal Preferred set forth opposite the name of the Underwriter in Schedule I
hereto.

                  3. TERMS OF PUBLIC OFFERING. The Trust and the Advisor have
been advised by the Underwriter that the Underwriter proposes to make a public
offering of the Shares as soon after the Registration Statement and this
Agreement have become effective as in the Underwriter's judgment is advisable
and initially to offer the Shares upon the terms set forth in the Prospectus.

                  4. DELIVERY OF THE SHARES AND PAYMENT THEREFOR. Delivery to
the Underwriter of and payment for the Shares shall be made at the office of
Simpson Thacher & Bartlett, 425 Lexington Avenue, New York, NY 10017, at 9:30
A.M., New York City time, on August __, 1999 (the "Closing Date"). The place of
closing for the Shares and the Closing Date may be varied by agreement between
the Underwriter and the Trust.

                  Certificates for the Shares shall be registered in such names
and in such denominations as the Underwriter shall request prior to 9:30 A.M.,
New York City time, on the second business day preceding the Closing Date. Such
certificates shall be made available to the Underwriter in New York City for
inspection not later than 9:30 A.M., New York City time, on the business day
next preceding the Closing Date. The certificates evidencing the Shares shall be
delivered to the Underwriter on the Closing Date, through the facilities of The
Depository Trust Company, against payment of the purchase price therefor in
immediately available funds.

                  5. AGREEMENTS OF THE TRUST AND THE ADVISOR. The Trust and the
Advisor, jointly and severally, agree with the Underwriter as follows:

                  (a) If, at the time this Agreement is executed and delivered,
it is necessary for the Registration Statement or a post-effective amendment
thereto to be declared effective under the 1933 Act before the offering of the
Shares may commence, the Trust will endeavor to cause the Registration Statement
or such post-effective amendment to become effective under the 1933 Act as soon
as possible and will advise the Underwriter promptly and, if requested by the
Underwriter, will confirm such advice in writing when the Registration Statement
or such post-effective amendment has become effective.

                  (b) The Trust will advise the Underwriter promptly and, if
requested by the Underwriter, will confirm such advice in writing: (i) of any
request made by the Commission for amendment of or a supplement to the
Registration Statement, any Prepricing Prospectus or the Prospectus (or any
amendment or supplement to any of the foregoing) or for additional information,
(ii) of the issuance by the Commission, the National Association of Securities
Dealers, Inc. (the "NASD"), any state securities commission, any national
securities exchange, any arbitrator, any court or any other governmental,
regulatory, self-regulatory or administrative agency or any official of any
order suspending the effectiveness of the Registration Statement,




<PAGE>   4


                                                                               4


prohibiting or suspending the use of the Prospectus or any Prepricing
Prospectus, or any sales material, of any notice pursuant to Section 8(e) of the
1940 Act, of the suspension of qualification of the Shares for offering or sale
in any jurisdiction, or the initiation of any proceeding for any such purposes,
(iii) of receipt by the Trust, the Advisor, any affiliate of the Trust or the
Advisor or any representative or attorney of the Trust or the Advisor of any
other material communication from the Commission, the NASD, any state securities
commission, any national securities exchange, any arbitrator, any court or any
other governmental, regulatory, self-regulatory or administrative agency or any
official relating to the Trust (if such communication relating to the Trust is
received by such person within three years after the date of this Agreement),
the Registration Statement, the 1940 Act Notification, the Prospectus, any
Prepricing Prospectus, any sales material (or any amendment or supplement to any
of the foregoing) or this Agreement or any of the Trust Agreements and (iv)
within the period of time referred to in paragraph (f) below, of any material
adverse change in the condition (financial or other), business, prospects,
properties, net assets or results of operations of the Trust or the Advisor or
of the happening of any other event which makes any statement of a material fact
made in the Registration Statement or the Prospectus or any sales material (or
any amendment or supplement to any of the foregoing) untrue or which requires
the making of any additions to or changes in the Registration Statement or the
Prospectus, or any Prepricing Prospectus or any sales materials (as herein
defined) (or any amendment or supplement to any of the foregoing) in order to
state a material fact required by the 1933 Act, the 1940 Act or the Rules and
Regulations to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they were made, not
misleading or of the necessity to amend or supplement the Registration
Statement, the Prospectus, or any Prepricing Prospectus or any sales material
(as herein defined) (or any amendment or supplement to any of the foregoing) to
comply with the 1933 Act, the 1940 Act, the Rules and Regulations or any other
law or order of any court or regulatory body. If at any time the Commission, the
NASD, any state securities commission, any national securities exchange, any
arbitrator, any court or any other governmental, regulatory, self-regulatory or
administrative agency or any official shall issue any order suspending the
effectiveness of the Registration Statement, prohibiting or suspending the use
of the Prospectus or any sales material (as herein defined) (or any amendment or
supplement to any of the foregoing) or suspending the qualification of the
Shares for offering or sale in any jurisdiction, the Trust will make every
reasonable effort to obtain the withdrawal of such order at the earliest
possible time.

                  (c) The Trust will furnish to the Underwriter, without charge,
three signed copies of the Registration Statement as originally filed with the
Commission and of each amendment thereto, including financial statements and all
exhibits thereto, and will also furnish to the Underwriter, without charge, such
number of conformed copies of the Registration Statement as originally filed and
of each amendment thereto, but without exhibits, as the Underwriter may request.

                  (d) The Trust will not (i) file any amendment to the
Registration Statement or make any amendment or supplement to the Prospectus, or
any sales material (as herein defined), of which the Underwriter shall not
previously have been advised or to which the Underwriter shall reasonably object
after being so advised or (ii) so long as, in the opinion of counsel for the




<PAGE>   5


                                                                               5


Underwriter, a Prospectus is required by the 1933 Act to be delivered in
connection with sales by the Underwriter or any dealer, file any information,
documents or reports pursuant to the Securities Exchange Act of 1934, as amended
(the "1934 Act"), without delivering a copy of such information, documents or
reports to the Underwriter prior to or concurrently with such filing.

                  (e) Prior to the execution and delivery of this Agreement, the
Trust has delivered to the Underwriter, without charge, in such quantities as
the Underwriter has requested, copies of each form of the Prepricing Prospectus.
The Trust consents to the use, in accordance with the provisions of the 1933 Act
and with the state securities or blue sky laws of the jurisdictions in which the
Shares are offered by the Underwriter and by dealers, prior to the date of the
Prospectus, of each Prepricing Prospectus so furnished by the Trust.

                  (f) As soon after the execution and delivery of this Agreement
as possible and thereafter from time to time for such period as in the opinion
of counsel for the Underwriter a prospectus is required by the 1933 Act to be
delivered in connection with sales by the Underwriter or any dealer, the Trust
will expeditiously deliver to the Underwriter and each dealer, without charge,
as many copies of the Prospectus (and of any amendment or supplement thereto) as
the Underwriter may reasonably request. The Trust consents to the use of the
Prospectus (and of any amendment or supplement thereto) in accordance with the
provisions of the 1933 Act and with the state securities or blue sky laws of the
jurisdictions in which the Shares are offered by the Underwriter and by all
dealers to whom Shares may be sold, both in connection with the offering and
sale of the Shares and for such period of time thereafter as the Prospectus is
required by the 1933 Act to be delivered in connection with sales by the
Underwriter or any dealer. If during such period of time any event shall occur
that in the judgment of the Trust or in the opinion of counsel for the
Underwriter is required to be set forth in the Registration Statement or the
Prospectus (as then amended or supplemented) or should be set forth therein in
order to make the statements therein, in the light of the circumstances under
which they were made, not misleading, or if it is necessary to supplement or
amend the Registration Statement or the Prospectus to comply with the 1933 Act,
the 1940 Act, the Rules and Regulations or any other federal law, rule or
regulation, or any state securities or blue sky disclosure laws, rules or
regulations, the Trust will forthwith prepare and, subject to the provisions of
paragraph (d) above, promptly file with the Commission an appropriate supplement
or amendment thereto, and will expeditiously furnish to the Underwriter and
dealers, without charge, a reasonable number of copies thereof. In the event
that the Trust and the Underwriter agree that the Registration Statement or the
Prospectus should be amended or supplemented, the Trust, if requested by the
Underwriter, will promptly issue a press release announcing or disclosing the
matters to be covered by the proposed amendment or supplement.

                  (g) The Trust will make generally available to its security
holders an earnings statement, which need not be audited, covering a
twelve-month period ending not later than 15 months after the effective date of
the Registration Statement as soon as practicable after the end of such period,
which earnings statement shall satisfy the provisions of Section 11(a) of the
1933 Act and Rule 158 of the 1933 Act Rules and Regulations.




<PAGE>   6


                                                                               6


                  (h) During the period of five years hereafter, the Trust will
furnish to the Underwriter (i) as soon as available, a copy of each report of
the Trust mailed to stockholders or filed with the Commission or furnished to
the New York Stock Exchange (the "NYSE") other than reports on Form N-SAR, and
(ii) from time to time such other information concerning the Trust as the
Underwriter may reasonably request.

                  (i) If this Agreement shall terminate or shall be terminated
after execution pursuant to any provisions hereof (otherwise than by notice
given by the Underwriter terminating this Agreement pursuant to Section 12
hereof) or if this Agreement shall be terminated by the Underwriter because of
any failure or refusal on the part of the Trust or the Advisor to comply with
the terms or fulfill any of the conditions of this Agreement, the Trust and the
Advisor, jointly and severally, agree to reimburse the Underwriter for all
out-of-pocket expenses (including reasonable fees and expenses of counsel for
the Underwriter) incurred by the Underwriter in connection herewith.

                  (j) The Trust will apply the net proceeds from the sale of the
Shares substantially in accordance with the description set forth in the
Prospectus and in such a manner as to comply with the investment objectives,
policies and restrictions of the Trust as described in the Prospectus.

                  (k) The Trust will timely file the requisite copies of the
Prospectus with the Commission pursuant to Rule 497(c) or Rule 497(h) of the
1933 Act Rules and Regulations, whichever is applicable or, if applicable, will
timely file the certification permitted by Rule 497(j) of the 1933 Act Rules and
Regulations and will advise the Underwriter of the time and manner of such
filing.

                  (l) Except as provided in this Agreement, the Trust will not
sell, contract to sell, or otherwise dispose of any senior securities (as
defined in the 1940 Act) of the Trust, or grant any options or warrants to
purchase senior securities of the Trust, for a period of 120 days after the date
of the Prospectus, without the prior written consent of the Underwriter.

                  (m) Except as stated in this Agreement and in the Prepricing
Prospectus and Prospectus, neither the Trust nor the Advisor has taken, nor will
it take, directly or indirectly, any action designed to or that might reasonably
be expected to cause or result in stabilization or manipulation of the price of
any securities issued by the Trust to facilitate the sale or resale of the
Shares.

                  (n) The Trust will use its best efforts to cause the Municipal
Preferred, prior to the Closing Date, to be assigned a rating of 'aaa' by
Moody's Investors Service, Inc. ("Moody's") and AAA by Standard & Poor's Ratings
Services ("S&P" and, together with Moody's, the "Rating Agencies").

                  (o) The Trust and the Advisor will use their best efforts to
perform all of the agreements required of them and discharge all conditions to
closing as set forth in this Agreement.




<PAGE>   7


                                                                               7


                  6. REPRESENTATIONS AND WARRANTIES OF THE TRUST AND THE
ADVISOR. The Trust and the Advisor, jointly and severally, represent and warrant
to the Underwriter that:

                  (a) Each Prepricing Prospectus included as part of the
registration statement as originally filed or as part of any amendment or
supplement thereto, or filed pursuant to Rule 497 of the 1933 Act Rules and
Regulations, complied when so filed in all material respects with the provisions
of the 1933 Act, the 1940 Act and the Rules and Regulations. The Commission has
not issued any order preventing or suspending the use of any Prepricing
Prospectus.

                  (b) The registration statement in the form in which it became
or becomes effective and also in such form as it may be when any post-effective
amendment thereto shall become effective and the Prospectus and any supplement
or amendment thereto when filed with the Commission under Rule 497 of the 1933
Act Rules and Regulations and the 1940 Act Notification when originally filed
with the Commission and any amendment or supplement thereto when filed with the
Commission, complied or will comply in all material respects with the provisions
of the 1933 Act, the 1940 Act and the Rules and Regulations and did not or will
not at any such times 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, except that this representation and warranty
does not apply to statements in or omissions from the registration statement or
the Prospectus made in reliance upon and in conformity with information relating
to the Underwriter furnished to the Trust in writing by or on behalf of the
Underwriter expressly for use therein.

                  (c) All the outstanding Common Shares (as defined in the
Prospectus) of the Trust have been duly authorized and validly issued, are fully
paid and nonassessable and are free of any preemptive or similar rights; the
Shares have been duly authorized and, when issued and delivered to the
Underwriter against payment therefor in accordance with the terms hereof, will
be validly issued, fully paid and nonassessable and free of any preemptive or
similar rights and will conform to the description thereof in the Registration
Statement and the Prospectus (and any amendment or supplement to either of
them); and the capitalization of the Trust conforms to the description thereof
in the Registration Statement and the Prospectus (and any amendment or
supplement to either of them).

                  (d) The Trust is a business trust duly organized and validly
existing in good standing under the laws of the Commonwealth of Massachusetts
with full business trust power and authority to own, lease and operate its
properties and to conduct its business as described in the Registration
Statement and the Prospectus (and any amendment or supplement to either of
them), and is duly registered and qualified to conduct its business and is in
good standing in each jurisdiction or place where the nature of its properties
or the conduct of its business requires such registration or qualification,
except where the failure so to register or qualify does not have a material
adverse effect on the condition (financial or other), business, prospects,
properties, net assets or results of operations of the Trust; and the Trust has
no subsidiaries.

                  (e) There are no legal or governmental proceedings pending or,
to the knowledge of the Trust, threatened, against the Trust, or to which the
Trust or any of its properties is subject,




<PAGE>   8


                                                                               8


that are required to be described in the Registration Statement or the
Prospectus (and any amendment or supplement to either of them) but are not
described as required, and there are no agreements, contracts, indentures,
leases or other instruments that are required to be described in the
Registration Statement or the Prospectus (and any amendment or supplement to
either of them) or to be filed as an exhibit to the Registration Statement that
are not described or filed as required by the 1933 Act, the 1940 Act or the
Rules and Regulations.

                  (f) The Trust is not in violation of its Declaration of Trust
(the "Declaration") or its amended and restated bylaws (the "Bylaws") or other
organizational documents (together with the Declaration and Bylaws, the
"Organizational Documents"), or of any law, ordinance, administrative or
governmental rule or regulation applicable to the Trust or of any decree of the
Commission, the NASD, any state securities commission, any national securities
exchange, any arbitrator, any court or governmental agency, body or official
having jurisdiction over the Trust, or in default in any material respect in the
performance of any obligation, agreement or condition contained in any bond,
debenture, note or any other evidence of indebtedness or in any material
agreement, indenture, lease or other instrument to which the Trust is a party or
by which it or any of its properties may be bound.

                  (g) Neither the issuance and sale of the Shares, the
execution, delivery or performance of this Agreement or any of the Trust
Agreements by the Trust, nor the consummation by the Trust of the transactions
contemplated hereby or thereby (i) requires any consent, approval, authorization
or other order of or registration or filing with, the Commission, the NASD, any
state securities commission, any national securities exchange, any arbitrator,
any court, regulatory body, administrative agency or other governmental body,
agency or official (except such as may have been obtained prior to the date
hereof and such as may be required for compliance with the state securities or
blue sky laws of various jurisdictions which have been or will be effected in
accordance with this Agreement) or conflicts or will conflict with or
constitutes or will constitute a breach of, or a default under, the
Organizational Documents of the Trust or (ii) conflicts or will conflict with or
constitutes or will constitute a breach of, or a default under, any agreement,
indenture, lease or other instrument to which the Trust is a party or by which
it or any of its properties may be bound, or violates or will violate any
statute, law, regulation or judgment, injunction, order or decree applicable to
the Trust or any of its properties, or will result in the creation or imposition
of any lien, charge or encumbrance upon any property or assets of the Trust
pursuant to the terms of any agreement or instrument to which it is a party or
by which it may be bound or to which any of its property or assets is subject.
The Trust is not subject to any order of any court or of any arbitrator,
governmental authority or administrative agency.

                  (h) The accountants, PricewaterhouseCoopers LLP, who have
certified or shall certify the financial statements included or incorporated by
reference in the Registration Statement and the Prospectus (or any amendment or
supplement to either of them) are independent public accountants as required by
the 1933 Act, the 1940 Act and the Rules and Regulations.




<PAGE>   9


                                                                               9


                  (i) The financial statements, together with related schedules
and notes, included or incorporated by reference in the Registration Statement
and the Prospectus (and any amendment or supplement to either of them), present
fairly the financial position, results of operations and changes in financial
position of the Trust on the basis stated or incorporated by reference in the
Registration Statement at the respective dates or for the respective periods to
which they apply; such statements and related schedules and notes have been
prepared in accordance with generally accepted accounting principles
consistently applied throughout the periods involved, except as disclosed
therein; and the other financial and statistical information and data included
in the Registration Statement and the Prospectus (and any amendment or
supplement to either of them) are accurately presented and prepared on a basis
consistent with such financial statements and the books and records of the
Trust.

                  (j) The execution and delivery of, and the performance by the
Trust of its obligations under, this Agreement and the Trust Agreements have
been duly and validly authorized by the Trust, and this Agreement and the Trust
Agreements have been duly executed and delivered by the Trust and assuming due
authorization, execution and delivery by the other parties thereto, constitute
the valid and legally binding agreements of the Trust, enforceable against the
Trust in accordance with their terms (subject to the qualification that the
enforceability of the Trust's obligations thereunder may be limited by
bankruptcy, insolvency, reorganization, moratorium, and similar laws of general
applicability relating to or affecting creditors' rights, and to general
principles of equity regardless of whether enforceability is considered in a
proceeding in equity or at law), except as rights to indemnity and contribution
hereunder and thereunder may be limited by federal or state securities laws.

                  (k) Except as disclosed in the Registration Statement and the
Prospectus (or any amendment or supplement to either of them), subsequent to the
respective dates as of which such information is given in the Registration
Statement and the Prospectus (or any amendment or supplement to either of them),
the Trust has not incurred any liability or obligation, direct or contingent, or
entered into any transaction, not in the ordinary course of business, that is
material to the Trust, and there has not been any change in the capitalization,
or material increase in the short-term debt or long-term debt, of the Trust, or
any material adverse change, or any development involving or which may
reasonably be expected to involve, a prospective material adverse change, in the
condition (financial or other), business, prospects, properties, net assets or
results of operations of the Trust, whether or not arising in the ordinary
course of business (a "Material Adverse Effect").

                  (l) The Trust has not distributed and, prior to the later to
occur of (i) the Closing Date and (ii) completion of the distribution of the
Shares, will not distribute any offering material in connection with the
offering and sale of the Shares other than the Registration Statement, the
Prepricing Prospectus, the Prospectus or other materials, if any, permitted by
the 1933 Act, the 1940 Act or the Rules and Regulations.

                  (m) (i) The Trust has such permits, licenses, franchises and
authorizations of governmental or regulatory authorities ("permits") as are
necessary to own its properties and to conduct its business in the manner
described in the Prospectus (and any amendment or




<PAGE>   10


                                                                              10


supplement thereto), subject to such qualifications as may be set forth in the
Prospectus; (ii) the Trust has fulfilled and performed all its material
obligations with respect to such permits and no event has occurred which allows,
or after notice or lapse of time would allow, revocation or termination thereof
or results in any other material impairment of the rights of the Trust under any
such permit, subject in each case to such qualification as may be set forth in
the Prospectus (and any amendment or supplement thereto); and (iii) except as
described in the Prospectus (and any amendment or supplement thereto), none of
such permits contains any restriction that is materially burdensome to the
Trust, except where the failure of (i), (ii) or (iii) to be accurate would not,
individually or in the aggregate, have a Material Adverse Effect on the Trust.

                  (n) The Trust maintains a system of internal accounting
controls sufficient to provide reasonable assurances that (i) transactions are
executed in accordance with management's general or specific authorization and
with the applicable requirements of the 1940 Act, the 1940 Act Rules and
Regulations and the Internal Revenue Code of 1986, as amended (the "Code"); (ii)
transactions are recorded as necessary to permit preparation of financial
statements in conformity with generally accepted accounting principles and to
maintain accountability for assets and to maintain compliance with the books and
records requirements under the 1940 Act and the 1940 Act Rules and Regulations;
(iii) access to assets is permitted only in accordance with management's general
or specific authorization; and (iv) the recorded accountability for assets is
compared with existing assets at reasonable intervals and appropriate action is
taken with respect to any differences.

                  (o) The Trust has filed all tax returns required to be filed,
which returns are complete and correct in all material respects, and the Trust
is not in material default in the payment of any taxes which were payable
pursuant to said returns or any assessments with respect thereto.

                  (p) No holder of any security of the Trust has any right to
require registration of shares of beneficial interest, shares of Municipal
Preferred or any other security of the Trust because of the filing of the
registration statement or consummation of the transactions contemplated by this
Agreement.

                  (q) The conduct by the Trust of its business (as described in
the Prospectus) does not require it to be the owner, possessor or licensee of
any patents, patent licenses, trademarks, service marks or trade names which it
does not own, possess or license.

                  (r) The Trust is registered under the 1940 Act as a closed-end
non-diversified management investment company and the 1940 Act Notification has
been duly filed with the Commission and, at the time of filing thereof and any
amendment or supplement thereto, conformed in all material respects with all
applicable provisions of the 1940 Act and the Rules and Regulations. The Trust
is, and at all times through the completion of the transactions contemplated
hereby, will be, in compliance in all material respects with the terms and
conditions of the 1933 Act and the 1940 Act. No person is serving or acting as
an officer, director or investment Advisor of the Trust except in accordance
with the provisions of the 1940 Act and the 1940 Act Rules and Regulations and
the Investment Advisers Act of 1940, as




<PAGE>   11


                                                                              11


amended (the "Advisers Act"), and the rules and regulations of the Commission
promulgated under the Advisers Act (the "Advisers Act Rules and Regulations").

                  (s) Except as stated in this Agreement and in the Prospectus
(and any amendment or supplement thereto), the Trust has not taken, nor will it
take, directly or indirectly, any action designed to or which might reasonably
be expected to cause or result in stabilization or manipulation of the price of
any securities issued by the Trust to facilitate the sale or resale of the
Shares, and the Trust is not aware of any such action taken or to be taken by
any affiliates of the Trust.

                  (t) The Trust has filed in a timely manner each document or
report required to be filed by it pursuant to the 1934 Act and the rules and
regulations of the Commission promulgated thereunder (the "1934 Act Rules and
Regulations"); each such document or report at the time it was filed conformed
to the requirements of the 1934 Act and the 1934 Act Rules and Regulations; and
none of such documents or reports contained an untrue statement of any material
fact or omitted to state any material fact required to be stated therein or
necessary to make the statements therein not misleading.

                  (u) All advertising, sales literature or other promotional
material (including "prospectus wrappers," "broker kits," "road show slides" and
"road show scripts") authorized in writing by or prepared by the Trust or the
Advisor for use in connection with the offering and sale of the Shares
(collectively "sales material") complied and comply in all material respects
with the applicable requirements of the 1933 Act, the 1940 Act, the Rules and
Regulations and the rules and interpretations of the NASD and no such sales
material contained or contains an untrue statement of a material fact or omitted
or omits 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.

                  (v) Each of the Trust Agreements and the Trust's and the
Advisor's obligations under this Agreement and each of the Trust Agreements
comply in all material respects with all applicable provisions of the 1940 Act,
the 1940 Act Rules and Regulations, the Advisers Act and the Advisers Act Rules
and Regulations.

                  (w) The Trust currently complies with all requirements under
the Code to qualify as a regulated investment company under Subchapter M of the
Code.

                  (x) Except as disclosed in the Registration Statement and the
Prospectus (or any amendment or supplement to either of them), no director of
the Trust is an "interested person" (as defined in the 1940 Act) of the Trust or
an "affiliated person" (as defined in the 1940 Act) of the Underwriter.

                  (y) The Trust's Common Shares are duly listed on the NYSE.

                  (z) The Advisor has considered, and is taking actions to
address, the possible adverse effects of the Year 2000 on the critical computer
systems used by the Advisor and its




<PAGE>   12


                                                                              12


affiliates on behalf of the Trust. Testing and remediation of those systems is
complete and the Advisor has determined that recognition and execution of
date-sensitive functions involving certain dates prior to and after December 31,
1999 (the "Year 2000 Problem") will not pose significant problems for the
computer systems used by the Advisor on behalf of the Trust. The Advisor
believes, after reasonable inquiry, that suppliers, vendors, or financial
service organizations used in the operation of the Trust have remedied or will
remedy the Year 2000 Problem and that those suppliers, vendors or financial
service organizations believe that their modifications will be completed on a
timely basis, except to the extent that a failure to remedy by any such
supplier, vendor, or financial service organization would not have a material
adverse effect on the operations of the Trust. The Trust is in compliance with
the Commission's Release No. 33-7558 related to Year 2000 compliance, as amended
to date.

                  (aa) The proxy statement and all related materials distributed
to holders of Common Shares of the Trust in connection with the shareholder
meeting held on May 20, 1999, as adjourned to _______ __, 1999 (the "Shareholder
Meeting") did not, as of its date or the date of the Shareholder Meeting,
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, and the holders of the Common Shares duly approved all of the items
proposed at such meeting, in accordance with the Organizational Documents of the
Trust and applicable law.

                  7. REPRESENTATIONS AND WARRANTIES OF THE ADVISOR. The Advisor
represents and warrants to the Underwriter as follows:

                  (a) The Advisor is a corporation duly incorporated and validly
existing in good standing under the laws of the Commonwealth of Massachusetts,
with full corporate power and authority to own, lease and operate its properties
and to conduct its business as described in the Registration Statement and the
Prospectus (and any amendment or supplement to either of them), and is duly
registered and qualified to conduct its business and is in good standing in each
jurisdiction or place where the nature of its properties or the conduct of its
business requires such registration or qualification, except where the failure
so to register or to qualify does not have a material adverse effect on the
condition (financial or other), business, prospects, properties, net assets or
results of operations of the Advisor or on the ability of the Advisor to perform
its obligations under this Agreement and the Management Agreement.

                  (b) The Advisor is duly registered with the Commission as an
investment advisor under the Advisers Act and is not prohibited by the Advisers
Act, the Advisers Act Rules and Regulations, the 1940 Act or the 1940 Act Rules
and Regulations from acting under the Management Agreement for the Trust as
contemplated by the Prospectus (or any amendment or supplement thereto). There
does not exist any proceeding or any facts or circumstances the existence of
which could lead to any proceeding which might adversely affect the registration
of the Advisor with the Commission.

                  (c) There are no legal or governmental proceedings pending or,
to the knowledge of the Advisor, threatened against the Advisor, or to which the
Advisor or any of its properties is subject, that are required to be described
in the Registration Statement or the Prospectus (or any




<PAGE>   13


                                                                              13


amendment or supplement to either of them) but are not described as required or
that may reasonably be expected to involve a prospective material adverse
change, in the condition (financial or other), business, prospects, properties,
net assets or results of operations of the Advisor or on the ability of the
Advisor to perform its obligations under this Agreement and the Management
Agreement.

                  (d) Neither the execution, delivery or performance of this
Agreement or the performance of the Management Agreement by the Advisor, nor the
consummation by the Advisor of the transactions contemplated hereby or thereby
(A) requires the Advisor to obtain any consent, approval, authorization or other
order of or registration or filing with, the Commission, the NASD, any state
securities commission, any national securities exchange, any arbitrator, any
court, regulatory body, administrative agency or other governmental body, agency
or official or conflicts or will conflict with or constitutes or will constitute
a breach of or a default under, the certificate of incorporation or by-laws, or
other organizational documents, of the Advisor or (B) conflicts or will conflict
with or constitutes or will constitute a breach of or a default under, any
agreement, indenture, lease or other instrument to which the Advisor is a party
or by which it or any of its properties may be bound, or violates or will
violate any statute, law, regulation or filing or judgment, injunction, order or
decree applicable to the Advisor or any of its properties or will result in the
creation or imposition of any lien, charge or encumbrance upon any property or
assets of the Advisor pursuant to the terms of any agreement or instrument to
which it is a party or by which it may be bound or to which any of the property
or assets of the Advisor is subject. The Advisor is not subject to any order of
any court or of any arbitrator, governmental authority or administrative agency.

                  (e) The execution and delivery of, and the performance by the
Advisor of its obligations under, this Agreement and the Management Agreement
have been duly and validly authorized by the Advisor, and this Agreement and the
Management Agreement have been duly executed and delivered by the Advisor and
each constitutes the valid and legally binding agreement of the Advisor,
enforceable against the Advisor in accordance with its terms (subject to the
qualification that the enforceability of the Advisor's obligations thereunder
may be limited by bankruptcy, insolvency, reorganization, moratorium and similar
laws of general applicability relating to or affecting creditors' rights, and to
general principles of equity regardless of whether enforceability is considered
in a proceeding in equity or at law), except as rights to indemnity and
contribution hereunder may be limited by federal or state securities laws.

                  (f) The description of the Advisor in the Registration
Statement and the Prospectus (and any amendment or supplement thereto) complied
and comply in all material respects with the provisions of the 1933 Act, the
1940 Act, the Advisers Act, the Rules and Regulations and the Advisers Act Rules
and Regulations and 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, in light of the circumstances under
which they were made, not misleading.

                  (g) Except as disclosed in the Registration Statement and the
Prospectus (or any amendment or supplement to either of them), subsequent to the
respective dates as of which such




<PAGE>   14


                                                                              14


information is given in the Registration Statement and the Prospectus (or any
amendment or supplement to either of them), the Advisor has not incurred any
liability or obligation, direct or contingent, or entered into any transaction,
not in the ordinary course of business, that is material to the Advisor or the
Trust and that is required to be disclosed in the Registration Statement or the
Prospectus and there has not been any material adverse change, or any
development involving or which may reasonably be expected to involve, a
prospective material adverse change, in the condition (financial or other),
business, prospects, properties, net assets or results of operations of the
Advisor, whether or not arising in the ordinary course of business, or which, in
each case, could have a material adverse effect on the ability of the Advisor to
perform its obligations under this Agreement and the Management Agreement.

                  (h) (i) The Advisor has such permits, licenses, franchises and
authorizations of governmental or regulatory authorities ("permits") as are
necessary to own its properties and to conduct its business in the manner
described in the Prospectus (and any amendment thereto); (ii) the Advisor has
fulfilled and performed all its material obligations with respect to such
permits and no event has occurred which allows, or after notice or lapse of time
would allow, revocation or termination thereof or results in any other material
impairment of the rights of the Advisor under any such permit; and (iii) except
as described in the Prospectus (and any amendment or supplement thereto), none
of such permits contains any restriction that is materially burdensome to the
Advisor, except where the failure of (i), (ii), or (iii) to be accurate would
not, individually or in the aggregate, have a Material Adverse Effect on the
Advisor.

                  8. INDEMNIFICATION AND CONTRIBUTION. (a) The Trust and the
Advisor, jointly and severally, agree to indemnify and hold harmless each of the
Underwriter and each person, if any, who controls the Underwriter within the
meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act from and
against any and all losses, claims, damages, liabilities and expenses (including
reasonable costs of investigation), joint or several, arising out of or based
upon any untrue statement or alleged untrue statement of a material fact
contained in any Prepricing Prospectus or in the Registration Statement or the
Prospectus or in any amendment or 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 not misleading,
except insofar as such losses, claims, damages, liabilities or expenses arise
out of or are based upon any untrue statement or omission or alleged untrue
statement or omission which has been made therein or omitted therefrom in
reliance upon and in conformity with the information relating to the Underwriter
furnished in writing to the Trust by or on behalf of the Underwriter expressly
for use in connection therewith; provided, however, that the indemnification
contained in this paragraph (a) with respect to any Prepricing Prospectus shall
not inure to the benefit of the Underwriter (or to the benefit of any person
controlling the Underwriter) on account of any such loss, claim, damage,
liability or expense arising from the sale of the Shares by the Underwriter to
any person if a copy of the Prospectus shall not have been delivered or sent to
such person within the time required by the 1933 Act and the 1933 Act Rules and
Regulations, and the untrue statement or alleged untrue statement or omission or
alleged omission of a material fact contained in such Prepricing Prospectus was
corrected in the Prospectus, provided that the Trust has delivered the
Prospectus to the Underwriter in requisite quantity on a timely basis to permit
such delivery or sending. The foregoing indemnity




<PAGE>   15


                                                                              15


agreement shall be in addition to any liability which the Trust or the Advisor
may otherwise have.

                  (b) Any party that proposes to assert the right to be
indemnified under this Section 8 will, promptly after receipt of notice of
commencement of any action against such party in respect of which a claim is to
be made against an indemnifying party or parties under this Section 8, notify
each such indemnifying party of the commencement of such action, enclosing a
copy of all papers served, but the omission to so notify such indemnifying party
(i) will not relieve it from any liability that it may have to any indemnified
party under the foregoing provision of this Section 8 unless, and only to the
extent that, such omission results in the forfeiture of substantive rights or
defenses by the indemnifying party and (ii) will not, in any event, relieve such
indemnifying party from any other obligation (other than pursuant to the
foregoing provision of this Section 8) it may have under this Agreement. If any
action, suit or proceeding shall be brought against the Underwriter or any
person controlling the Underwriter in respect of which indemnity may be sought
against the Trust or the Advisor, the Underwriter or such controlling person
shall promptly notify the Trust or the Advisor, and the Trust or the Advisor
may, at its option and upon notice to the Underwriter assume the defense
thereof, including the employment of counsel and payment of all fees and
expenses. The Underwriter or any such controlling person shall have the right to
employ separate counsel in any such action, suit or proceeding and to
participate in the defense thereof, but the fees and expenses of such counsel
shall be at the expense of the Underwriter or such controlling person unless (i)
the Trust or the Advisor has agreed in writing to pay such fees and expenses,
(ii) the Trust and the Advisor have failed to assume the defense and employ
counsel, or (iii) the named parties to any such action, suit or proceeding
(including any impleaded parties) include both the Underwriter or such
controlling person and the Trust or the Advisor and the Underwriter or such
controlling person shall have been advised by its counsel that representation of
such indemnified party and the Trust or the Advisor by the same counsel would be
inappropriate under applicable standards of professional conduct (whether or not
such representation by the same counsel has been proposed) due to actual or
potential differing interests between them (in which case the Trust and the
Advisor shall not have the right to assume the defense of such action, suit or
proceeding on behalf of the Underwriter or such controlling person). It is
understood, however, that the Trust and the Advisor shall, in connection with
any one such action, suit or proceeding or separate but substantially similar or
related actions, suits or proceedings in the same jurisdiction arising out of
the same general allegations or circumstances, be liable for the reasonable fees
and expenses of only one separate firm of attorneys (in addition to any local
counsel) at any time for the Underwriter and controlling persons not having
actual or potential differing interests with you or among themselves, which firm
shall be designated in writing by the Underwriter, and that all such fees and
expenses shall be reimbursed as they are incurred. The Trust and the Advisor
shall not be liable for any settlement of any such action, suit or proceeding
effected without its written consent (which shall not be unreasonably withheld),
but if settled with such written consent, or if there be a final judgment for
the plaintiff in any such action, suit or proceeding, the Trust and the Advisor
agree to indemnify and hold harmless the Underwriter, to the extent provided in
the preceding paragraph, and any such controlling person from and against any
loss, claim, damage, liability or reasonable expense by reason of such
settlement or judgment.




<PAGE>   16


                                                                              16


                  (c) The Underwriter agrees to indemnify and hold harmless the
Trust and the Advisor, their directors, trustees and officers who sign the
Registration Statement, and any person who controls the Trust or the Advisor
within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act,
to the same extent as the foregoing indemnity from the Trust and the Advisor to
the Underwriter, but only with respect to information relating to the
Underwriter furnished in writing by or on behalf of the Underwriter expressly
for use in the Registration Statement, the Prospectus or any Prepricing
Prospectus, or any amendment or supplement thereto. If any action, suit or
proceeding shall be brought against the Trust or the Advisor, any of their
directors, any such officer, or any such controlling person based on the
Registration Statement, the Prospectus or any Prepricing Prospectus, or any
amendment or supplement thereto, and in respect of which indemnity may be sought
against the Underwriter pursuant to this paragraph (c), the Underwriter shall
have the rights and duties given to the Trust and the Advisor by paragraph (b)
above (except that if the Trust or the Advisor shall have assumed the defense
thereof the Underwriter shall not be required to do so, but may employ separate
counsel therein and participate in the defense thereof, but the fees and
expenses of such counsel shall be at the Underwriter's expense), and the Trust
and the Advisor, their directors, trustees and any such officer, and any such
controlling person shall have the rights and duties given to the Underwriter by
paragraph (b) above. The foregoing indemnity agreement shall be in addition to
any liability which the Underwriter may otherwise have.

                  (d) If the indemnification provided for in this Section 8 is
unavailable to an indemnified party under paragraphs (a) or (c) hereof in
respect of any losses, claims, damages, liabilities or expenses referred to
therein, then an 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 reasonable expenses
(i) in such proportion as is appropriate to reflect the relative benefits
received by the Trust and the Advisor on the one hand (treated jointly for this
purpose as one person) and the Underwriter on the other hand from the offering
of the Shares, 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 Trust and the Advisor on the one hand (treated jointly for this
purpose as one person) 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
with respect to the offering of the Shares. The relative benefits received by
the Trust and the Advisor on the one hand (treated jointly for this purpose as
one person) and the Underwriter on the other shall be deemed to be in the same
proportion as the total net proceeds from the offering (before deducting
expenses) received by the Trust bear to the total underwriting discounts and
commissions 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 Trust and the
Advisor on the one hand (treated jointly for this purpose as one person) and the
Underwriter on the other hand 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 Trust and the Advisor on the one hand (treated jointly for this
purpose as one person) or by the Underwriter on the other hand and the parties'
relative intent, knowledge, access to information and opportunity to correct or
prevent such statement or omission. Any party entitled




<PAGE>   17


                                                                              17


to contribution will, promptly after receipt of notice of commencement of any
action against such party in respect of which a claim for contribution may be
made under this Section 8(d), notify such party or parties from whom
contribution may be sought, but the omission so to notify (i) will not relieve
the party or parties from whom contribution may be sought from any other
obligation it or they may have under this Section 8(d), unless such omission
results in the forfeiture of substantive rights or defenses by the party or
parties from whom contribution is being sought and (ii) will not, in any event,
relieve the party or parties from whom contribution may be sought from any other
obligation (other than pursuant to this Section 8(d)) it or they may have under
this Agreement. Except for a settlement entered into pursuant to the last
sentence of Section 8(b) hereof, no party will be liable for contribution with
respect to any action or claim settled without its written consent (which
consent shall not be unreasonably withheld).

                  (e) The Trust, the Advisor and the Underwriter agree that it
would not be just and equitable if contribution pursuant to this Section 8 were
determined by a pro rata allocation or by any other method of allocation that
does not take account of the equitable considerations referred to in paragraph
(d) above. The amount paid or payable by an indemnified party as a result of the
losses, claims, damages, liabilities and expenses referred to in paragraph (d)
above 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 any claim or defending any such action, suit or
proceeding. Notwithstanding the provisions of this Section 8, the Underwriter
shall not be required to contribute any amount in excess of the amount by which
the total price of the Shares underwritten by it and distributed to the public
exceeds the amount of any damages which the 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 entitled to contribution
from any person who was not guilty of such fraudulent misrepresentation.

                  (f) No indemnifying party shall, without the prior written
consent of the indemnified party, effect any settlement of any pending or
threatened action, suit or proceeding in respect of which any indemnified party
is or could have been a party and indemnity could have been sought hereunder by
such indemnified party, unless such settlement includes an unconditional release
of such indemnified party from all liability on claims that are the subject
matter of such action, suit or proceeding.

                  (g) Notwithstanding any other provisions in this Section 8, no
party shall be entitled to the benefit of any provision under this Agreement
which protects or purports to protect such person against any liability to the
Trust or its security holders to which such person would otherwise be subject by
reason of such person's willful misfeasance, bad faith, or gross negligence, in
the performance of such person's duties hereunder, or by reason of such person's
reckless disregard of such person's obligations and duties hereunder.

                  (h) Any losses, claims, damages, liabilities or expenses for
which an indemnified party is entitled to indemnification or contribution under
this Section 8 shall be paid by the indemnifying party to the indemnified party
as such losses, claims, damages, liabilities or expenses are incurred. The
indemnity and contribution agreements contained in this Section 8




<PAGE>   18


                                                                              18


and the representations and warranties of the Trust and the Advisor 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, the Trust, the Advisor, their directors or
officers, or any person controlling the Trust or the Advisor, (ii) acceptance of
any Shares and payment therefor hereunder, and (iii) any termination of this
Agreement. A successor to the Underwriter or any person controlling the
Underwriter, or to the Trust, the Advisor, their directors or officers, or any
person controlling the Trust or the Advisor, shall be entitled to the benefits
of the indemnity, contribution, and reimbursement agreements contained in this
Section 8.

                  9. CONDITIONS OF UNDERWRITER'S OBLIGATIONS. The obligation of
the Underwriter to purchase the Shares hereunder are subject to the following
conditions:

                  (a) If, at the time this Agreement is executed and delivered,
it is necessary for the registration statement or a post-effective amendment
thereto to be declared effective before the offering of the Shares may commence,
the registration statement or such post-effective amendment shall have become
effective not later than 5:30 P.M., New York City time, on the date hereof, or
at such later date and time as shall be consented to in writing by the
Underwriter, and all filings, if any, required by Rules 497 and 430A under the
1933 Act and the 1933 Act Rules and Regulations shall have been timely made; no
stop order suspending the effectiveness of the Registration Statement or order
pursuant to Section 8(e) of the 1940 Act shall have been issued and no
proceeding for those purposes shall have been instituted or, to the knowledge of
the Trust, the Advisor or the Underwriter, threatened by the Commission, and any
request of the Commission for additional information (to be included in the
Registration Statement or the Prospectus or otherwise) shall have been complied
with to the Underwriter's reasonable satisfaction.

                  (b) Subsequent to the effective date of this Agreement, there
shall not have occurred (i) any change or any development involving a
prospective change in or affecting the condition (financial or other), business,
prospects, properties, net assets, or results of operations of the Trust or the
Advisor not contemplated by the Prospectus, which in the Underwriter's
reasonable opinion would materially and adversely affect the market for the
Shares, or (ii) any event or development relating to or involving the Trust or
the Advisor or any officer or director of the Trust or the Advisor which makes
any statement made in the Prospectus untrue or which, in the reasonable opinion
of the Trust and its counsel or the Underwriter and its counsel, requires the
making of any addition to or change in the Prospectus in order to state a
material fact required by the 1933 Act, the 1940 Act or the Rules and
Regulations or any other law to be stated therein or necessary in order to make
the statements therein not misleading, if amending or supplementing the
Prospectus to reflect such event or development would, in the Underwriter's
opinion, materially adversely affect the market for the Shares.

                  (c) The Trust shall have furnished to the Underwriter a report
showing compliance with the asset coverage requirements of the 1940 Act and a
Basic Maintenance Report (as defined in the By-laws), each dated the Closing
Date and in form and substance satisfactory to the Underwriter. Each such report
may use portfolio holdings and valuations as of




<PAGE>   19


                                                                              19


the close of business of any day not more than six business days preceding the
Closing Date, provided, however, that the Trust represents in such report that
its total net assets as of the Closing Date have not declined by 5% or more from
such valuation date.

                  (d) The Underwriter shall have received on the Closing Date,
an opinion of Ropes & Gray, counsel for the Trust, dated the Closing Date and
addressed to the Underwriter, in form and substance satisfactory to the
Underwriter and to the effect set forth in Exhibit A hereto.

                  (e) The Underwriter shall have received on the Closing Date an
opinion of the General Counsel for the Advisor, dated the Closing Date and
addressed to the Underwriter, in form and substance satisfactory to the
Underwriter and to the effect set forth in Exhibit B hereto.

                  (f) The Underwriter shall have received on the Closing Date an
opinion of Simpson Thacher & Bartlett, counsel for the Underwriter, dated the
Closing Date and addressed to the Underwriter, with respect to such matters as
the Underwriter may reasonably request.

                  (g) The Underwriter shall have received letters addressed to
the Underwriter and dated the date hereof and the Closing Date from
PricewaterhouseCoopers LLP, independent certified public accountants,
substantially in the forms heretofore approved by the Underwriter.

                  (h) (i) No order suspending the effectiveness of the
Registration Statement or prohibiting or suspending the use of the Prospectus
(or any amendment or supplement thereto) or any Prepricing Prospectus or any
sales material shall have been issued and no proceedings for such purpose or for
the purpose of commencing an enforcement action against the Trust, the Advisor
or, with respect to the transactions contemplated by the Prospectus (or any
amendment or supplement thereto) and this Agreement, the Underwriter, may be
pending before or, to the knowledge of the Trust, the Advisor or the Underwriter
or in the reasonable view of counsel to the Underwriter, shall be threatened or
contemplated by the Commission at or prior to the Closing Date and that any
request for additional information on the part of the Commission (to be included
in the Registration Statement, the Prospectus or otherwise) be complied with to
the satisfaction of the Underwriter; (ii) there shall not have been any change
in the shares of beneficial interest of the Trust nor any material increase in
the short-term or long-term debt of the Trust (other than in the ordinary course
of business) from that set forth or contemplated in the Registration Statement
or the Prospectus (or any amendment or supplement thereto); (iii) there shall
not have been, subsequent to the respective dates as of which information is
given in the Registration Statement and the Prospectus (or any amendment or
supplement thereto), except as may otherwise be stated in the Registration
Statement and Prospectus (or any amendment or supplement thereto), any material
adverse change in the condition (financial or other), business, prospects,
properties, net assets or results of operations of the Trust or the Advisor;
(iv) the Trust shall not have any liabilities or obligations, direct or
contingent (whether or not in the ordinary course of business), that are
material to the Trust, other than those reflected in the Registration Statement
or the Prospectus (or any amendment or supplement to either of them); and (v)
all the representations and warranties of the Trust and the Advisor contained in
this Agreement shall be true and correct on and as of the date hereof and on and
as of the Closing Date as if made on and as of the Closing Date, and the
Underwriter shall have received a certificate of the Trust and the




<PAGE>   20


                                                                              20


Advisor, dated the Closing Date and signed by the chief executive officer and
the chief financial officer of each of the Trust and the Advisor (or such other
officers as are acceptable to the Underwriter), to the effect set forth in this
Section 9(h) and in Section 9(i) hereof.

                  (i) Neither the Trust nor the Advisor shall have failed at or
prior to the Closing Date to have performed or complied in all material respects
with any of its agreements herein contained and required to be performed or
complied with by it hereunder at or prior to the Closing Date.

                  (j) The Trust shall have delivered and the Underwriter shall
have received evidence satisfactory to the Underwriter that the Shares are rated
'aaa' by Moody's and AAA by S&P as of the Closing Date, and there shall not have
been given any notice of any intended or potential downgrading, or of any review
for a potential downgrading, in the rating accorded to the shares of Municipal
Preferred by any Rating Agency.

                  (k) The Trust and the Advisor shall have furnished or caused
to be furnished to the Underwriter such further certificates and documents as
the Underwriter shall have reasonably requested.

                  All such opinions, certificates, letters and other documents
will be in compliance with the provisions hereof only if they are reasonably
satisfactory in form and substance to the Underwriter and the Underwriter's
counsel.

                  Any certificate or document signed by any officer of the Trust
or the Advisor and delivered to the Underwriter, or to counsel for the
Underwriter, shall be deemed a representation and warranty by the Trust or the
Advisor to the Underwriter as to the statements made therein.

                  10. EXPENSES. The Trust agrees to pay the following costs and
expenses and all other costs and expenses incident to the performance by it of
its obligations hereunder: (i) the preparation, printing or reproduction, and
filing with the Commission of the registration statement (including financial
statements and exhibits thereto), each Prepricing Prospectus, the 1940 Act
Notification, the Prospectus and each amendment or supplement to any of them
(including, without limitation, the filing fees prescribed by the 1933 Act, the
1940 Act and the Rules and Regulations); (ii) the printing (or reproduction) and
delivery (including postage, air freight charges and charges for counting and
packaging) of such copies of the Registration Statement, each Prepricing
Prospectus, the Prospectus, any sales material and all amendments or supplements
to any of them as may be reasonably requested for use in connection with the
offering and sale of the Shares; (iii) the preparation, printing,
authentication, issuance and delivery of certificates for the Shares, including
any stamp taxes in connection with the original issuance and sale of the Shares;
(iv) the reproduction and delivery of this Agreement, any dealer agreements, the
preliminary blue sky memorandum, if any, and all other agreements or documents
reproduced and delivered in connection with the offering of the Shares; (v) the
registration of the Shares under the 1934 Act; (vi) the reasonable fees,
expenses and disbursements of counsel for the Underwriter relating to the
preparation, reproduction, and delivery of any preliminary blue sky memorandum;
(vii) fees paid to the Rating Agencies; (viii)




<PAGE>   21


                                                                              21


the transportation and other expenses incurred by or on behalf of Trust
representatives in connection with presentations to prospective purchasers of
the Shares; and (ix) the fees and expenses of the Trust's accountants and the
fees and expenses of counsel (including local and special counsel) for the
Trust; provided, that (a) the Trust, the Advisor and the Underwriter shall pay
its own costs and expenses in attending any information meeting relating to the
Trust, (b) the Underwriter shall pay the costs and expenses of any sales
material prepared by it in connection with the public offering of the Shares,
(c) the Underwriter shall pay the costs and expenses of any "tombstone"
advertisements, and (d) except as provided in this Section and in Section 5
hereof, the Underwriter shall pay its own costs and expenses, including the fees
and expenses of their counsel.

                  11. EFFECTIVE DATE OF AGREEMENT. This Agreement shall become
effective: (i) upon the execution and delivery hereof by the parties hereto; or
(ii) if, at the time this Agreement is executed and delivered, it is necessary
for the registration statement or a post-effective amendment thereto to be
declared effective before the offering of the Shares may commence, when
notification of the effectiveness of the registration statement or such
post-effective amendment has been released by the Commission. Until such time as
this Agreement shall have become effective, it may be terminated by the Trust,
by notifying the Underwriter, or by the Underwriter, by notifying the Trust. Any
notice under this Section 11 may be given by telegram, telecopy or telephone but
shall be subsequently confirmed by letter.

                  12. TERMINATION OF AGREEMENT. This Agreement shall be subject
to termination in the Underwriter's absolute discretion, without liability on
the part of the Underwriter to the Trust or the Advisor, by notice to the Trust,
if prior to the Closing Date (i) trading in securities generally on the NYSE
shall have been suspended or materially limited, (ii) a general moratorium on
commercial banking activities in New York shall have been declared by either
federal or state authorities, or (iii) there shall have occurred any outbreak or
escalation of hostilities or other international or domestic calamity, crisis or
change in political, financial or economic conditions, the effect of which on
the financial markets of the United States is to make it, in the Underwriter's
judgment, impracticable or inadvisable to commence or continue the offering of
the Shares at the offering price to the public set forth on the cover page of
the Prospectus or to enforce contracts for the resale of the Shares by the
Underwriter. Notice of such termination may be given to the Trust by telegram,
telecopy or telephone and shall be subsequently confirmed by letter.

                  13. INFORMATION FURNISHED BY THE UNDERWRITER. The statements
set forth in the last paragraph on the cover page and the statements in the
first and fourth sentences of the third paragraph and in the fifth paragraph
under the caption "Underwriting" in any Prepricing Prospectus and in the
Prospectus, constitute the only information furnished by or on behalf of the
Underwriter as such information is referred to in Sections 6(b) and 8 hereof.

                  14. MISCELLANEOUS. Except as otherwise provided in Sections 5,
11 and 12 hereof, notice given pursuant to any provision of this Agreement shall
be in writing and shall be delivered (i) if to the Trust or the Advisor, at the
office of the Trust at One Financial Center, Boston, MA 02111, Attention:
Secretary; or (ii) if to the Underwriter, to Salomon Smith Barney




<PAGE>   22


                                                                              22


Inc., 388 Greenwich Street, New York, New York 10013, Attention: Manager,
Investment Banking Division.

                  15. DISCLAIMER. A copy of the document establishing the Trust
is filed with the Secretary of the Commonwealth of Massachusetts. This Agreement
is executed by officers not as individuals and is not binding upon any of the
Trustees, officers, or shareholders of the Trust individually but only upon the
assets of the Trust.

                  This Agreement has been and is made solely for the benefit of
the Underwriter, the Trust, the Advisor, their directors and officers, and the
other controlling persons referred to in Section 8 hereof and their respective
successors and assigns, to the extent provided herein, and no other person shall
acquire or have any right under or by virtue of this Agreement. Neither the term
"successor" nor the term "successors and assigns" as used in this Agreement
shall include a purchaser from the Underwriter of any of the Shares in his
status as such purchaser.

                  16. APPLICABLE LAW; COUNTERPARTS. This Agreement shall be
governed by and construed in accordance with the laws of the State of New York.

                  This Agreement may be signed in various counterparts which
together constitute one and the same instrument. If signed in counterparts, this
Agreement shall not become effective unless at least one counterpart hereof
shall have been executed and delivered on behalf of each party hereto.


                                  [End of Text]




<PAGE>   23





                  Please confirm that the foregoing correctly sets forth the
agreement among the Trust, the Advisor and the Underwriter.


                                             Very truly yours,


                                             COLONIAL INVESTMENT GRADE
                                             MUNICIPAL TRUST



                                             By:
                                                 -------------------------------



                                             COLONIAL MANAGEMENT
                                             ASSOCIATES, INC.



                                             By:
                                                 -------------------------------


Confirmed as of the date first
above mentioned.

SALOMON SMITH BARNEY INC.



By:
    ----------------------------------
    Managing Director




<PAGE>   24




                                   SCHEDULE I

                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST


                                                                   Number of
                                                                   Shares of
                                                                   Municipal
                           Underwriter                             Preferred
                           -----------                             ---------

Salomon Smith Barney Inc.........................................    2,400


                                                                     -----

Total............................................................    2,400








<PAGE>   25
                                    EXHIBIT A

                         FORM OF OPINION OF ROPES & GRAY

         The Underwriter shall have received on the Closing Date an opinion of
Ropes & Gray, counsel for the Trust, dated the Closing Date and addressed to the
Underwriter, in form and substance satisfactory to the Underwriter and to the
effect that:

         a.    The Trust is a business trust duly organized and validly existing
               in good standing under the laws of the Commonwealth of
               Massachusetts with full power and authority to own, lease and
               operate its properties and to conduct its business as described
               in the Registration Statement and the Prospectus and to issue and
               sell the Shares as contemplated by the Underwriting Agreement;

         b.    The Shares have been duly authorized and, when issued and
               delivered to the Underwriter against payment therefor in
               accordance with the terms of the Underwriting Agreement, will be
               validly issued, fully paid and nonassessable and free of any
               preemptive or similar rights and will conform to the description
               thereof in the Registration Statement and the Prospectus; the
               Certificate evidencing the Shares complies with all requirements
               of Massachusetts law; and the relative rights, interests, powers
               and preferences of the Shares, and the obligation of the Trust to
               redeem such Shares upon the terms and conditions set forth in the
               By-Laws, are legal, valid, binding and enforceable under
               Massachusetts law;

         c.    The Shares conform in all material respects with the statements
               concerning them contained in the Prospectus, and the authorized
               and outstanding shares of beneficial interest of the Trust are as
               set forth in the Prospectus;

         d.    The Registration Statement is effective under the 1933 Act and
               the 1940 Act; any required filing of the Prospectus pursuant to
               Rule 497 of the 1933 Act Rules and Regulations has been made
               within the time periods required by Rule 497(b) or (h), as the
               case may be; to the best knowledge of such counsel, no stop order
               suspending its effectiveness or order pursuant to Section 8(e) of
               the 1940 Act relating to the Trust has been issued and no
               proceeding for any such purpose is pending or threatened by the
               Commission;

         e.    The Registration Statement and the Prospectus comply as to form
               in all material respects with the provisions of the 1933 Act, the
               1940 Act and the Rules and Regulations (except that no opinion
               need be expressed as to the financial statements or other
               financial data contained therein);

         f.    The statements made in the Prospectus (including the Statement of
               Additional Information) under the captions "The Auction" and
               "Description of Municipal

<PAGE>   26

                                                                               2

               Preferred", insofar as they purport to summarize the provisions
               of the Bylaws or other documents or agreements specifically
               referred to therein, constitute accurate summaries of the terms
               of any such documents;

         g.    The statements made in the Prospectus (including the Statement of
               Additional Information) under the captions "Tax Matters", insofar
               as they constitute matters of law or legal conclusions, have been
               reviewed by such counsel and constitute accurate statements of
               any such matters of law or legal conclusions in all material
               respects, and fairly present the information called for with
               respect thereto by Form N-2 under the 1940 Act;

         h.    To such counsel's knowledge (but without a search of the dockets
               of any court, administrative body or filing office in any
               jurisdiction), there are no legal or governmental proceedings
               pending or threatened against the Trust, or to which the Trust or
               any of its properties is subject, that are required to be
               described in the Registration Statement or the Prospectus but are
               not described as required;

         i.    To the best of such counsel's knowledge after reasonable inquiry,
               there are no agreements, contracts, indentures, leases or other
               instruments that are required to be described in the Registration
               Statement or the Prospectus or to be filed as an exhibit to the
               Registration Statement that are not described or filed as
               required by the 1933 Act, the 1940 Act or the Rules and
               Regulations;

         j.    Neither the issuance and sale of the Shares, the execution,
               delivery or performance of the Underwriting Agreement or any of
               the Trust Agreements by the Trust, nor the consummation by the
               Trust of the transactions contemplated thereby (A) requires any
               consent, approval, authorization or other order of or
               registration or filing by the Trust with the Commission, the
               NASD, any national securities exchange, any arbitrator, any
               court, regulatory body, administrative agency or other
               governmental body, agency or official (except such as may have
               been obtained prior to the date hereof and such as may be
               required for compliance with state securities and blue sky laws)
               or conflicts or will conflict with or constitutes or will
               constitute a breach of, or a default under, the Declaration, the
               By-Laws or other organizational documents of the Trust or (B) (i)
               conflicts or will conflict with or constitutes or will constitute
               a breach of, or a default under, any agreement, indenture, lease
               or other instrument to which the Trust is a party or by which it
               or any of its properties may be bound and that is identified, in
               an officer's certificate of the Trust, as material to the
               business, financial condition, operations, properties or
               prospects of the Trust (the "Agreements and Instruments"), (ii)
               violates or will violate any statute, law or regulation (assuming
               compliance with state securities and blue sky laws), (iii)
               violates or will violate any judgment, injunction, order or
               decree that is applicable to the Trust or any of its properties
               and that is known to such counsel, or (iv) will result in the
               creation or imposition of any lien, charge or encumbrance upon
               any property or assets of the Trust pursuant to the terms of the
               Agreements and Instruments;


<PAGE>   27

                                                                               3

         k.    The Underwriting Agreement and the Trust Agreements have been
               duly authorized, executed and delivered by the Trust and each
               complies with all applicable provisions of the 1940 Act; assuming
               due authorization, execution and delivery by the other parties
               thereto, each Trust Agreement constitutes the valid and binding
               obligation of the Trust enforceable in accordance with its terms,
               except as rights to indemnity and contribution in the
               Underwriting Agreements and Trust Agreements may be limited by
               Federal or state securities laws, subject as to enforcement to
               bankruptcy, insolvency, reorganization and other laws of general
               applicability relating to or affecting creditors' rights and to
               general equity principles;

         l.    The Trust is duly registered under the 1940 Act as a closed-end
               non-diversified management investment company;

         m.    The provisions of the Declaration and By-Laws of the Trust and
               the investment policies and restrictions described in the
               Prospectus (including the Statement of Additional Information)
               under the captions "Investment Objectives and Policies" and
               "Miscellaneous Investment Practices" comply with the requirements
               of the 1940 Act and the 1940 Act Rules and Regulations; and

         n.    The portions of the proxy statement and all related materials
               distributed to holders of Common Shares of the Trust in
               connection with the shareholder meeting held on May 20, 1999, as
               adjourned to ________ __, 1999 (the "Shareholder Meeting"), and
               in connection with amending the Declaration to permit the
               issuance of preferred shares (the "Preferred Share Proxy
               Materials") did not, as of its date or the date of the
               Shareholder Meeting, 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, and the Preferred Share Proxy Materials complied as
               to form, as of its date and as of the date of the Shareholder
               Meeting, in all material respects with the provisions of the 1934
               Act, the 1940 Act and the Rules and Regulations.

         Such counsel shall also have furnished to the Underwriter a statement,
addressed to the Underwriter, dated the Closing Date, to the effect that such
counsel has acted for the Trust in connection with the preparation of the
Registration Statement, and based on the foregoing, while such counsel has not
themselves independently verified the accuracy or completeness of or otherwise
verified and is not passing upon and assumes no responsibility for the
Registration Statement or the Prospectus (other than as set forth in (f), (g)
and (m) above) in the course of their review of the Registration Statement and
Prospectus and discussion of the contents of the Registration Statement and
Prospectus with certain officers and employees of the Trust and its independent
accountants, no facts have come to the attention of such counsel which would
lead them to believe that the Registration Statement (excluding the financial
statements, including the notes and schedules thereto, or other financial data
contained or referred to therein, as to which such counsel need express no
belief), as of its effective date, contained any untrue statement of a material
fact or omitted to state any material fact required to be stated therein or



<PAGE>   28

                                                                               4

necessary in order to make the statements therein not misleading or that the
Prospectus (except for the financial statements, including the notes and
schedules thereto, or other financial data contained or referred to therein, as
to which such counsel need express no belief) contains any untrue statement of a
material fact or omits to state any material fact required to be stated therein
or necessary in order to make the statements therein, in light of the
circumstances under which they were made, not misleading.

         Such counsel may also state that they do not express any opinion
concerning any law other than the law of the Commonwealth of Massachusetts and
the federal law of the United States.



<PAGE>   29




                                    EXHIBIT B

                  FORM OF OPINION OF GENERAL COUNSEL OF ADVISER

         The Underwriter shall have received on the Closing Date an opinion of
the General Counsel of the Advisor, addressed to the Underwriter and dated the
Closing Date, in form and substance satisfactory to the Underwriter and to the
effect that:

         a.    The Advisor is a corporation duly incorporated and validly
               existing and in good standing under the laws of The Commonwealth
               of Massachusetts, with full corporate power and authority to own,
               lease and operate its properties and to conduct its business as
               described in the Registration Statement and the Prospectus;

         b.    The Underwriting Agreement and the Management Agreement have been
               duly authorized, executed and delivered by the Advisor and each
               complies with all applicable provisions of the Advisers Act and
               the Management Agreement constitutes the valid and binding
               obligation of the Advisor enforceable in accordance with its
               terms, subject as to enforcement to bankruptcy, insolvency,
               reorganization and other laws of general applicability relating
               to or affecting creditors' rights and to general equity
               principles;

         c.    The Advisor is duly registered with the Commission as an
               investment adviser under the Advisers Act and is not prohibited
               by the Advisers Act, the Advisers Act Rules and Regulations, the
               1940 Act or the 1940 Act Rules and Regulations from acting under
               the Management Agreement for the Trust as contemplated by the
               Prospectus;

         d.    To the best of such counsel's knowledge after reasonable inquiry,
               there are no legal or governmental proceedings pending or
               threatened against the Advisor, or to which the Advisor or any of
               its properties is subject, that are required to be described in
               the Registration Statement or the Prospectus but are not
               described as required;

         e.    To the best of such counsel's knowledge after reasonable inquiry,
               the Advisor is not in violation of its corporate charter or
               by-laws, nor is the Advisor in default under any material
               agreement, indenture or instrument or in breach or violation of
               any judgment, decree, order, rule or regulation of any court or
               governmental or self-regulatory agency or body;

         f.    Neither the execution, delivery or performance of the
               Underwriting Agreement nor the consummation by the Advisor of the
               transactions contemplated hereby or thereby (A) requires the
               Advisor to obtain any consent, approval, authorization or other
               order of or registration or filing with, the Commission, the
               NASD, any national securities exchange, any arbitrator, any
               court, regulatory body, administrative agency or other
               governmental body, agency or official (except such as may have
               been obtained prior to the date hereof and such as may be
               required for compliance with state securities or blue sky laws)
               or conflicts or will conflict with or constitutes or will
               constitute a breach of, or


<PAGE>   30


               a default under, the certificate of incorporation or by-laws, or
               other organizational documents, of the Advisor or (B) (i)
               conflicts or will conflict with or constitutes or will constitute
               a breach of, or a default under, any material agreement,
               indenture, lease or other instrument to which the Trust is a
               party or by which it or any of its properties may be bound (the
               "Agreements and Instruments") or any other Agreements and
               Instruments known to such counsel after due inquiry, (ii)
               violates or will violate any statute, law or regulation (assuming
               compliance with state securities and blue sky laws), (iii)
               violates or will violate any judgment, injunction, order or
               decree that is applicable to the Advisor or any of its properties
               and that is known to such counsel, or (iv) will result in the
               creation or imposition of any lien, charge or encumbrance upon
               any property or assets of the Advisor pursuant to the terms of
               the Agreements and Instruments; and

         g.    The description of the Advisor in the Registration Statement and
               the Prospectus does 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 under which they were made, not misleading.





<PAGE>   1
                                                                  Exhibit (k)(1)


                        COLONIAL AUCTION AGENCY AGREEMENT
                     Basic Terms for Acting as Auction Agent

                                   July 20, 1999

            These basic terms ("Basic Terms") set forth the general terms and
conditions pursuant to which a bank or trust company identified in a Request and
Acceptance Letter will act as auction agent (an "Auction Agent") for Municipal
Auction Rate Cumulative Preferred Shares ("Municipal Preferred") issued by an
investment company registered under the Investment Company Act of 1940, as
amended, as further identified by such Request and Acceptance Letter (a
"Trust"), for which Colonial Management Associates, Inc. is the investment
adviser.

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



            The Trust proposes to issue shares of Municipal Preferred pursuant
to its Agreement, Declaration of Trust and Bylaws. The Trust desires that the
Auction Agent perform certain duties in connection with the Municipal Preferred
upon the terms and subject to the conditions of the Agreement.

1.          Definitions and Rules of Construction.

      1.1   Terms Defined By Reference to Bylaws.

            Capitalized terms not defined herein shall have the respective
meanings specified in the Bylaws.

      1.2   Terms Defined Herein.

            As used herein and in the Settlement Procedures, the following terms
shall have the following meanings, unless the context otherwise requires:

            (a) "Agent Member" of any Person shall mean the member of, or
      participant in, the Securities Depository that will act on behalf of a
      Bidder.

            (b) "Agreement" shall mean the Basic Terms, together with the
      Request and Acceptance Letter relating to one or more series of Municipal
      Preferred.

            (c) "Auction" shall have the meaning specified in Section 2.1
      hereof.

            (d) "Auction Procedures" shall mean the auction procedures
      constituting Part II of Section 12.1 of the Bylaws of any Trust as of the
      adoption thereof.

            (e) "Authorized Officer" of the Auction Agent shall mean each Senior
      Vice President, Vice President, Assistant Vice President and Associate
<PAGE>   2
                                                                               2


      of the Auction Agent assigned to its Corporate Trust and Agency Group and
      every other officer or employee of the Auction Agent designated as an
      "Authorized Officer" for purposes hereof in a communication to the Trust.

            (f) "Broker-Dealer Agreement" shall mean each agreement among the
      Trust, the Auction Agent and a Broker-Dealer substantially in the form
      attached hereto as Exhibit A.

            (g) "By-Laws," with respect to any Trust, shall mean the By-Laws, as
      amended and restated, of such Trust, a copy of which will be attached to
      the Request and Acceptance Letter of such Trust.

            (h) "Declaration" means the Agreement and Declaration of Trust of
      any Trust, as the same may be amended, supplemented or modified.

            (i) "Municipal Preferred" shall mean the preferred shares, no par
      value, of any Trust designated as its "Municipal Auction Rate Cumulative
      Preferred Shares" and bearing such further designation as to series as the
      Board of Trustees of such Trust or any committee thereof shall specify, as
      set forth in the Request Letter.

            (j) "Request and Acceptance Letter" shall mean the letter from the
      Trust to the Auction Agent pursuant to which the Trust appoints the
      Auction Agent and the Auction Agent accepts its appointment as auction
      agent for the Municipal Preferred.

            (k) "Settlement Procedures" shall mean the Settlement Procedures
      attached hereto as Exhibit B.

            (l) "Trust Officer" shall mean the Chairman of the Board of
      Trustees, each Vice Chairman of the Board of Trustees (whether or not
      designated by a number or word or words added before or after the title
      "Vice Chairman"), the President, each Vice President (whether or not
      designated by a number or word or words added before or after the title
      "Vice President"), the Secretary, the Treasurer, each Assistant Vice
      President and each Associate of the Trust and every other officer or
      employee of the Trust designated as a "Trust Officer" for purposes hereof
      in a notice to the Auction Agent.

      1.3   Rules of Construction.

            Unless the context or use indicates another or different meaning or
intent, the following rules shall apply to the construction of the Agreement:

            (a) Words importing the singular number shall include the plural
      number and vice versa.
<PAGE>   3
                                                                               3


            (b) The captions and headings herein are solely for convenience of
      reference and shall not constitute a part of the Agreement nor shall they
      affect its meaning, construction or effect.

            (c) The words "hereof", "herein", "hereto" and other words of
      similar import refer to the Agreement as a whole.

            (d) All references herein to a particular time of day shall be to
      New York City time.

2.    The Auction.

      2.1   Purpose; Incorporation by Reference of
            Auction Procedures and Settlement Procedures.

            (a) The Bylaws for each series of Municipal Preferred will provide
      that the Applicable Rate for such series for each Subsequent Rate Period
      thereof shall, except under certain conditions, be the rate per annum that
      a bank or trust company appointed by the Trust advises results from
      implementation of the Auction Procedures for such series. The Board of
      Directors or Board of Trustees, as the case may be, of the Trust has
      adopted a resolution appointing the Auction Agent as auction agent for
      purposes of the Auction Procedures for each series of Municipal Preferred.
      The Auction Agent accepts such appointment and agrees to follow the
      procedures set forth in this Section 2 and the Auction Procedures for the
      purpose of determining the Applicable Rate for each series of Municipal
      Preferred for each Subsequent Rate Period thereof for which the Applicable
      Rate is to be determined by an Auction. Each periodic implementation of
      such procedures is hereinafter referred to as an "Auction."

            (b) All of the provisions contained in the Auction Procedures and
      the Settlement Procedures are incorporated herein by reference in their
      entirety and shall be deemed to be a part hereof to the same extent as if
      such provisions were fully set forth herein.

      2.2   Preparation for Each Auction; Maintenance
            of Registry of Beneficial Owners.

            (a) Not later than seven days prior to the first Auction Date for
      the first series of Municipal Preferred subject to an Auction, the Trust
      shall provide the Auction Agent with a list of the Broker-Dealers. Not
      later than seven days prior to any Auction Date for any series of
      Municipal Preferred for which any change in such list of Broker-Dealers is
      to be effective, the Trust will notify the Auction Agent in writing of
      such change and, if any such change involves the addition of a
      Broker-Dealer to such list, shall cause to be delivered to the Auction
      Agent for execution by the Auction Agent a Broker-Dealer Agreement signed
      by such Broker-Dealer;
<PAGE>   4
                                                                               4


      provided, however, that if the Trust proposes to designate any Special
      Rate Period of any series of Municipal Preferred pursuant to Section 4 of
      Part I of Section 12.1 of the Bylaws, not later than 11:00 A.M., New York
      City time, on the Business Day next preceding the Auction next preceding
      the first day of such Rate Period or by such later time or date, or both,
      as may be agreed to by the Auction Agent, the Trust shall provide the
      Auction Agent with a list of the Broker-Dealers for such series and a
      manually signed copy of each Broker-Dealer Agreement or a new Schedule A
      to a Broker-Dealer Agreement (which Schedule A shall replace and supersede
      any previous Schedule A to such Broker-Dealer Agreement) with each
      Broker-Dealer for such series. The Auction Agent and the Trust shall have
      entered into a Broker-Dealer Agreement with each Broker-Dealer prior to
      the participation of any such Broker-Dealer in any Auction.

            (b) In the event that any Auction Date for any series of Municipal
      Preferred shall be changed after the Auction Agent shall have given the
      notice referred to in clause (vi) of paragraph (a) of the Settlement
      Procedures, or after the notice referred to in Section 2.5(a) hereof, if
      applicable, the Auction Agent, by such means as the Auction Agent deems
      practicable, shall give notice of such change to the Broker-Dealers for
      such series not later than the earlier of 9:15 A.M., New York City time,
      on the new Auction Date or 9:15 A.M., New York City time, on the old
      Auction Date.

            (c)   (i) The Auction Agent shall maintain a registry of the
      beneficial owners of the shares of Municipal Preferred of each series who
      shall constitute Existing Holders of shares of Municipal Preferred of such
      series for purposes of Auctions and shall indicate thereon the identity of
      the respective Broker-Dealer of each Existing Holder, if any, on whose
      behalf such Broker-Dealer submitted the most recent Order in any Auction
      which resulted in such Existing Holder continuing to hold or purchasing
      shares of Municipal Preferred of such series. The Auction Agent shall keep
      such registry current and accurate. The Trust shall provide or cause to be
      provided to the Auction Agent at or prior to the Date of Original Issue of
      the shares of Municipal Preferred of each series a list of the initial
      Existing Holders of the shares of each such series of Municipal Preferred,
      the number of shares purchased by each such Existing Holder and the
      respective Broker-Dealer of each such Existing Holder or the affiliate
      thereof through which each such Existing Holder purchased such shares. The
      Auction Agent shall advise the Trust in writing whenever the number of
      Existing Holders is 500 or more. The Auction Agent may rely upon, as
      conclusive evidence of the identities of the Existing Holders of shares of
      Municipal Preferred of any series (A) such list, (B) the results of
      Auctions, (C) notices from any Broker-Dealer as described in the first
      sentence of Section 2.2(c)(iii) hereof and (D) the results of any
      procedures approved by the Trust that have been devised for the purpose of
      determining the identities of Existing Holders in situations where shares
      of Municipal Preferred may have been transferred without compliance with
      any restriction on the transfer thereof set forth in the Auction
      Procedures.
<PAGE>   5
                                                                               5


                  (ii) In the event of any partial redemption of any series of
      Municipal Preferred, the Auction Agent shall, at least two Business Days
      prior to the next Auction for such series, request each Broker-Dealer to
      provide the Auction Agent with a list of Persons who such Broker-Dealer
      believes should remain Existing Holders after such redemption based upon
      inquiries of those Persons such Broker-Dealer believes are Beneficial
      Owners as a result of the most recent Auction and with respect to each
      such Person, the number of shares of Municipal Preferred of such series
      such Broker-Dealer believes are owned by such Person after such
      redemption. In the absence of receiving any such information from any
      Broker-Dealer, the Auction Agent may continue to treat the Persons listed
      in its registry of Existing Holders as the beneficial owner of the number
      of shares of Municipal Preferred of such series shown in such registry.

                  (iii) The Auction Agent shall be required to register a
      transfer of shares of Municipal Preferred of any series from an Existing
      Holder of such shares of Municipal Preferred only if such transfer is to
      another Existing Holder, or other Person if permitted by the Trust, and
      only if such transfer is made (A) pursuant to an Auction, (B) the Auction
      Agent has been notified in writing (I) in a notice substantially in the
      form of Exhibit C to the Broker-Dealer Agreements by a Broker-Dealer of
      such transfer or (II) in a notice substantially in the form of Exhibit D
      to the Broker-Dealer Agreements by the Broker-Dealer of any Existing
      Holder, or other Person if permitted by the Trust, that purchased or sold
      such shares of Municipal Preferred in an Auction of the failure of such
      shares of Municipal Preferred to be transferred as a result of such
      Auction or (C) pursuant to procedures approved by the Trust that have been
      devised for the purpose of determining the identities of Existing Holders
      in situations where shares of Municipal Preferred may have been
      transferred without compliance with any restriction on the transfer
      thereof set forth in the Auction Procedures. The Auction Agent is not
      required to accept any such notice for an Auction unless it is received by
      the Auction Agent by 3:00 P.M., New York City time, on the Business Day
      preceding such Auction.

            (d) The Auction Agent may request the Broker-Dealers, as set forth
      in the Broker-Dealer Agreements, to provide the Auction Agent with a list
      of Persons who such Broker-Dealer believes should be Existing Holders
      based upon inquiries of those Persons such Broker-Dealer believes are
      Beneficial Owners as a result of the most recent Auction and with respect
      to each such Person, the number of shares of such series of Municipal
      Preferred such Broker-Dealer believes to be owned by such Person. The
      Auction Agent shall keep confidential such registry of Existing Holders
      and shall not disclose the identities of the Existing Holders of such
      shares of Municipal Preferred to any Person other than the Trust and the
      Broker-Dealer that provided such information.
<PAGE>   6
                                                                               6


      2.3   Information Concerning Rates.

            (a) The Rate Multiple on the date of the Agreement is set forth in
      the Request and Acceptance Letter. If there is any change in the credit
      rating of Municipal Preferred by either of the rating agencies (or
      substitute or successor rating agencies) referred to in the definition of
      "Rate Multiple" resulting in any change in the Rate Multiple for Municipal
      Preferred after the date of the Request and Acceptance Letter, the Trust
      shall notify the Auction Agent in writing of such change in the Rate
      Multiple prior to 12:00 Noon, New York City time, on the Business Day
      prior to the next Auction Date for any series of Municipal Preferred
      succeeding such change. If the Trust designates all or a portion of any
      dividend on shares of any series of Municipal Preferred to consist of net
      capital gains or other income taxable for Federal income tax purposes, it
      will indicate, in its notice in the form of Exhibit I hereto to the
      Auction Agent pursuant to Section 2.6 hereof, the Rate Multiple for such
      series to be in effect for the Auction Date on which the dividend rate for
      such dividend is to be fixed. In determining the Maximum Rate for any
      series of Municipal Preferred on any Auction Date as set forth in Section
      2.3(b)(i) hereof, the Auction Agent shall be entitled to rely on the last
      Rate Multiple for Municipal Preferred of which it has most recently
      received notice from the Trust (or, in the absence of such notice, the
      percentage set forth in the Request and Acceptance Letter), except that if
      the Trust shall have notified the Auction Agent of a Rate Multiple to be
      in effect for an Auction Date in accordance with the preceding sentence,
      the Rate Multiple in effect for the next succeeding Auction Date of any
      series of Municipal Preferred shall be, unless the Trust notifies the
      Auction Agent of a change in the Rate Multiple for such succeeding Auction
      Date pursuant to this Section 2.3(a), the Rate Multiple that was in effect
      on the first preceding Auction Date for Municipal Preferred with respect
      to which the dividend, the rate for which was fixed on such Auction Date,
      did not include any net capital gains or other income taxable for Federal
      income tax purposes.

            (b)   (i) On each Auction Date for any series of Municipal
      Preferred, the Auction Agent shall determine the Maximum Rate for such
      series. The Maximum Rate for any series of Municipal Preferred on any
      Auction Date shall be:

                  (A) in the case of any Auction Date which is not the Auction
      Date immediately prior to the first day of any proposed Special Rate
      Period designated by the Trust pursuant to Section 4 of Part I of Section
      12.1 of the Bylaws, the product of (1) the Reference Rate on such Auction
      Date for the next Rate Period of such series and (2) the Rate Multiple on
      such Auction Date, unless such series has or had a Special Rate Period
      (other than a Special Rate Period of 28 Rate Period Days or fewer) and an
      Auction at which Sufficient Clearing Bids existed has not yet occurred for
      a Minimum Rate Period of such series after such Special Rate Period, in
      which case the higher of:
<PAGE>   7
                                                                               7


                        (1) the dividend rate on shares of such series for the
                  then-ending Rate Period; and

                        (2) the product of (x) the higher of (I) the Reference
                  Rate on such Auction Date for a Rate Period equal in length to
                  the then-ending Rate Period of such series, if such then
                  ending Rate Period was 364 Rate Period Days or fewer, or the
                  Treasury Note Rate on such Auction Date for a Rate Period
                  equal in length to the then-ending Rate Period of such series,
                  if such then ending Rate Period was more than 364 Rate Period
                  Days, and (II) the Reference Rate on such Auction Date for a
                  Rate Period equal in length to such Special Rate Period of
                  such series, if such Special Rate Period was 364 Rate Period
                  Days or fewer, or the Treasury Note Rate on such Auction Date
                  for a Rate Period equal in length to such Special Rate Period,
                  if such Special Rate Period was more than 364 Rate Period Days
                  and (y) the Rate Multiple on such Auction Date; or

                  (B) in the case of any Auction Date which is the Auction Date
      immediately prior to the first day of any proposed Special Rate Period
      designated by the Trust pursuant to Section 4 of Part I of Section 12.1 of
      the Bylaws, the product of (1) the highest of (x) the Reference Rate on
      such Auction Date for a Rate-Period equal in length to the then-ending
      Rate Period of such series, if such then-ending Rate Period was 364 Rate
      Period Days or fewer, or the Treasury Note Rate on such Auction Date for a
      Rate Period equal in length to the then-ending Rate Period of such Rate
      Period, if such then-ending Rate Period was more than 364 Rate Period
      Days, (y) the Reference Rate on such Auction Date for the Special Rate
      Period for which the Auction is being held if such Special Rate Period is
      364 Rate Period Days or fewer or the Treasury Note Rate on such Auction
      Date for the Special Rate Period for which the Auction is being held if
      such Special Rate Period is more than 364 Rate Period Days, and (z) the
      Reference Rate on such Auction Date for Minimum Rate Periods and (2) the
      Rate Multiple on such Auction Date.

Not later than 9:30 A.M. on each Auction Date the Auction Agent shall notify the
Trust and the Broker-Dealers of the Maximum Rate so determined and the "AA"
Composite Commercial Paper Rate(s), the Taxable Equivalent of the Short-Term
Municipal Bond Rate(s), Treasury Note Rate(s) and Treasury Bill Rate(s), as the
case may be, used to make such determination.

                  (ii) From and after a Failure to Deposit by the Trust during
      any Rate Period of any series of Municipal Preferred, until such failure
      is cured and a Late Charge (as defined in paragraph (a) of Section 2.7),
      is paid, in accordance with subparagraph (e)(i) of Section 2 of Part I of
      Section 12.1 of the Bylaws, on the first day of each Rate Period of such
      series the Auction Agent shall determine the Treasury Note Rate for such
      Rate Period of more than 364 Rate Period Days and the Reference Rate for
      Rate Periods of 364 Rate Period Days or fewer. Not later
<PAGE>   8
                                                                               8


      than 9:30 A.M. on each such first day, the Auction Agent shall notify the
      Trust of the applicable Reference Rate and Treasury Note Rate.

                  (iii) If any "AA" Composite Commercial Paper Rate, Taxable
      Equivalent of the Short-Term Municipal Bond Rate, Treasury Note Rate or
      Treasury Bill Rate, as the case may be, is not quoted on an interest or
      bond equivalent, as the case may be, basis, the Auction Agent shall
      convert the quoted rate to the interest or bond equivalent thereof as set
      forth in the definition of such rate in the Bylaws if the rate obtained by
      the Auction Agent is quoted on a discount basis, or if such rate is quoted
      on a basis other than an interest or bond equivalent or discount basis the
      Auction Agent shall convert the quoted rate to an interest or bond
      equivalent rate after consultation with the Trust as to the method of such
      conversion.

                  (iv) If any "AA" Composite Commercial Paper Rate is to be
      based on rates supplied by Commercial Paper Dealers and one or more of the
      Commercial Paper Dealers shall not provide a quotation for the
      determination of such "AA" Composite Commercial Paper Rate, the Auction
      Agent shall immediately notify the Trust so that the Trust can determine
      whether to select a Substitute Commercial Paper Dealer or Substitute
      Commercial Paper Dealers to provide the quotation or quotations not being
      supplied by any Commercial Paper Dealer or Commercial Paper Dealers. The
      Trust shall promptly advise the Auction Agent of any such selection.

                  (v) If any Treasury Note Rate or Treasury Bill Rate is to be
      based on rates supplied by U.S. Government Securities Dealers and one or
      more of the U.S. Government Securities Dealers shall not provide a
      quotation for the determination of such Treasury Rate, the Auction Agent
      shall immediately notify the Trust so that the Trust can determine whether
      to select a Substitute U.S. Government Securities Dealer or Substitute
      U.S. Government Securities Dealers to provide the quotation or quotations
      not being supplied by any U.S. Government Securities Dealer or U.S.
      Government Securities Dealers. The Trust shall promptly advise the Auction
      Agent of any such selection.

            (c) The maximum marginal tax rate referred to in the definition of
      "Rate Multiple" in the Bylaws is referred to in this Agreement as the
      "Highest Marginal Rate." The Highest Marginal Rate on the date of the
      Agreement is set forth in the Request and Acceptance Letter. If there is
      any change in the Highest Marginal Rate, the Trust shall notify the
      Auction Agent in writing of such change prior to 12:00 Noon, New York City
      time, on the Business Day prior to the next Auction Date for Municipal
      Preferred succeeding such change. In determining the Maximum Rate for any
      series of Municipal Preferred on any Auction Date, the Auction Agent shall
      be entitled to rely on the Highest Marginal Rate of which it has most
      recently received notice from the Trust (or, in the absence of such
      notice, the percentage set forth in the Request and Acceptance Letter).
<PAGE>   9
                                                                               9


      2.4   Auction Schedule.

            The Auction Agent shall conduct Auctions in accordance with the
schedule set forth below. Such schedule may be changed by the Auction Agent with
the consent of the Trust, which consent shall not be unreasonably withheld. The
Auction Agent shall give written notice of any such change to each
Broker-Dealer. Such notice shall be given prior to the close of business on the
Business Day next preceding the first Auction Date on which any such change
shall be effective.

         Time                       Event

      By 9:30 A.M.                  Auction Agent advises the Trust and Broker-
                                    Dealers of the applicable Maximum Rate and
                                    the Reference Rate(s) and Treasury Note
                                    Rate(s), as the case may be, used in
                                    determining such Maximum Rate as set forth
                                    in Section 2.3(b)(i) hereof.

      9:30 A.M. - 1:30 P.M.         Auction Agent assembles information
                                    communicated to it by Broker-Dealers as
                                    provided in Section 2(a) of the Auction
                                    Procedures.  Submission Deadline is 1:30
                                    P.M.

      Not earlier than 1:30 P.M.    Auction Agent makes determinations pursuant
                                    to Section 3(a) of the Auction Procedures.

      By approximately 3:00 P.M.    Auction Agent advises Trust of results of
                                    Auction as provided in Section 3(b) of the
                                    Auction Procedures.

Submitted Bids and Submitted Sell Orders are accepted and rejected and shares of
Municipal Preferred are allocated as provided in Section 4 of the Auction
Procedures. The Auction Agent gives notice of the Auction results as set forth
in paragraph (a) of the Settlement Procedures.

The Auction Agent shall follow the notification procedures set forth in
paragraph (a) of the Settlement Procedures.

      2.5   Designation of Special Rate Period.

            (a) The Bylaws will provide that, subject to the Trust's option to
      designate a Special Rate Period as referred to in paragraph (b) of this
      Section 2.5, (i) each Rate Period of any series of Municipal Preferred
      will be a Minimum Rate
<PAGE>   10
                                                                              10


      Period (a duration of seven days, subject to certain exceptions) and (ii)
      each Rate Period following a Rate Period of any series of Municipal
      Preferred that is other than a Minimum Rate Period will be a Minimum Rate
      Period. Not less than 10 nor more than 20 days prior to the last day of
      any such Rate Period that is not a Minimum Rate Period, (i) the Trust
      shall deliver to the Auction Agent a notice of the Auction Date of the
      next succeeding Auction for such series in the form of Exhibit C hereto
      and (ii) the Auction Agent shall deliver such notice by first-class mail,
      postage prepaid, to each Existing Holder of shares of such series at the
      address set forth for such Existing Holder in the records of the Auction
      Agent and to the Broker-Dealers for such series as promptly as practicable
      after its receipt of such notice from the Trust.

            (b) Pursuant to the Bylaws, the Trust may, at its option, designate
      a Special Rate Period for any series of Municipal Preferred in the manner
      described in Section 4 of Part I of Section 12.1 of the Bylaws.

                  (i) If the Board of Trustees proposes to designate any
      succeeding Subsequent Rate Period of any series of Municipal Preferred as
      a Special Rate Period, (A) the Trust shall deliver to the Auction Agent a
      notice of such proposed Special Rate Period in the form of Exhibit D
      hereto not less than 20 (or such lesser number of days as may be agreed to
      from time to time by the Auction Agent) nor more than 30 days prior to the
      first day of such proposed Special Rate Period and (B) the Auction Agent
      on behalf of the Trust shall deliver such notice by first-class mail,
      postage prepaid, to each Existing Holder of shares of such series of
      Municipal Preferred at the address set forth for such Existing Holder in
      the records of the Auction Agent and to the Broker-Dealers for such series
      as promptly as practicable after its receipt of such notice from the
      Trust.

                  (ii) If the Board of Trustees determines to designate such
      succeeding Subsequent Rate Period as a Special Rate Period, (A) the Trust
      shall deliver to the Auction Agent a notice of such determination in the
      form of Exhibit E hereto not later than 11:00 A.M., New York City time, on
      the second Business Day next preceding the first day of such proposed
      Special Rate Period (or such later time or date, or both, as may be agreed
      to by the Auction Agent) and (B) the Auction Agent shall deliver such
      notice to the Broker-Dealers for such series not later than 3:00 P.M., New
      York City time, on such second Business Day (or, if the Auction Agent has
      agreed to a later time or date, as promptly as practicable thereafter).

                  (iii) If the Trust shall deliver to the Auction Agent a notice
      not later than 11:00 A.M., New York City time, on the second Business Day
      next preceding the first day of such proposed Special Rate Period (or such
      later time or date, or both, as may be agreed to by the Auction Agent)
      stating that the Trust has determined not to exercise its option to
      designate such succeeding Subsequent Rate Period as a Special Rate Period,
      in the form of Exhibit F hereto, or shall fail to timely deliver either
      such notice or a notice in the form of Exhibit E hereto, the
<PAGE>   11
                                                                              11


      Auction Agent shall deliver a notice in the form of Exhibit F hereto to
      the Broker-Dealers for such series not later than 3:00 P.M., New York City
      time, on such second Business Day (or, if the Auction Agent has agreed to
      a later time or date, as promptly as practicable thereafter).

Such change in the length of any Rate Period shall not occur if (1) an Auction
for shares of such series shall not be held on such Auction Date for any reason
or (2) an Auction for shares of such series shall be held on such Auction Date
but Sufficient Clearing Bids for shares of such series shall not exist in such
Auction.

      2.6   Allocation of Taxable Income.

            The Trust shall, in the case of a Minimum Rate Period or a Special
Rate Period of 28 Rate Period Days or fewer, and may, in the case of any other
Special Rate Period, designate all or a portion of any dividend on shares of any
series of Municipal Preferred to consist of net capital gains or other income
taxable for Federal income tax purposes by delivering to the Auction Agent a
notice in the form of Exhibit I hereto of such designation not later than the
Dividend Payment Date for such series next preceding the Auction Date on which
the dividend rate for such dividend is to be fixed. The Auction Agent will
deliver such notice to the Broker-Dealers for such series on the Business Day
following its receipt of such notice from the Trust. Within two Business Days
after any Auction Date involving the allocation of income taxable for Federal
income tax purposes, the Auction Agent shall notify each Broker-Dealer for the
related series as to the dollar amount per share of such taxable income and
income exempt from Federal income taxation included in the related dividend.

      2.7   Failure to Deposit.

            (a)   If:

                  (i) any Failure to Deposit shall have occurred with respect to
      shares of Municipal Preferred during any Rate Period thereof (other than
      any Special Rate Period of more than 364 Rate Period Days or any Rate
      Period succeeding any Special Rate Period of more than 364 Rate Period
      Days during which a Failure to Deposit occurred that has not been cured),
      but, prior to 12:00 Noon, New York City time, on the third Business Day
      next succeeding the date on which such Failure to Deposit occurred, such
      Failure to Deposit shall have been cured in accordance with Section 2.7(c)
      hereof and the Trust shall have paid to the Auction Agent a late charge (a
      "Late Charge") equal to the sum of (1) if such Failure to Deposit
      consisted of the failure timely to pay to the Auction Agent the full
      amount of dividends with respect to any Dividend Period on such shares, an
      amount computed by multiplying (x) 200% of the Reference Rate for the Rate
      Period during which such Failure to Deposit occurs on the Dividend Payment
      Date for such Dividend Period by (y) a fraction, the numerator of which
      shall be the number of days for which such Failure to Deposit has not been
      cured in accordance with
<PAGE>   12
                                                                              12


      Section 2.7(c) hereof (including the day such Failure to Deposit occurs
      and excluding the day such Failure to Deposit is cured) and the
      denominator of which shall be 360, and applying the rate obtained against
      the aggregate liquidation preference of the outstanding shares of
      Municipal Preferred and (2) if such Failure to Deposit consisted of the
      failure timely to pay to the Auction Agent the Redemption Price of the
      shares of Municipal Preferred, if any, for which Notice of Redemption has
      been given by the Trust, an amount computed by multiplying (x) 200% of the
      Reference Rate for the Rate Period during which such Failure to Deposit
      occurs on the redemption date by (y) a fraction, the numerator of which
      shall be the number of days for which such Failure to Deposit is not cured
      in accordance with Section 2.7(c) hereof (including the day such Failure
      to Deposit occurs and excluding the day such Failure to Deposit is cured)
      and the denominator of which shall be 360, and applying the rate obtained
      against the aggregate liquidation preference of the outstanding shares of
      Municipal Preferred to be redeemed,

then the Auction Agent shall deliver a notice in the form of Exhibit G hereto by
first-class mail, postage prepaid, to the Broker-Dealers for such series not
later than one Business Day after its receipt of the payment from the Trust
curing such Failure to Deposit and such Late Charge.

            (b)   If:

                  (i) any Failure to Deposit shall have occurred with respect to
      shares of Municipal Preferred during any Rate Period thereof (other than
      any Special Rate Period of more than 364 Rate Period Days or any Rate
      Period succeeding any Special Rate Period of more than 364 Rate Period
      Days during which a Failure to Deposit occurred but has not been cured),
      and, prior to 12:00 Noon, New York City time, on the third Business Day
      next succeeding the date on which such Failure to Deposit occurred, such
      Failure to Deposit shall not have been cured in accordance with Section
      2.7(c) hereof or the Trust shall not have paid the applicable Late Charge
      to the Auction Agent; or

                  (ii) any Failure to Deposit shall have occurred with respect
      to shares of Municipal Preferred during a Special Rate Period thereof of
      more than 364 Rate Period Days, or during any Rate Period thereof
      succeeding any Special Rate Period of more than 364 Rate Period Days
      during which a Failure to Deposit occurred that has not been cured, and,
      prior to 12:00 Noon, New York City time, on the fourth Business Day
      preceding the Auction Date for the Rate Period subsequent to such Rate
      Period, such Failure to Deposit shall not have been cured in accordance
      with Section 2.7(c) hereof or the Trust shall not have paid the applicable
      Late Charge to the Auction Agent in accordance with Section 2(e)(i)(D) of
      Section 12.1 of the Bylaws (such Late Charge, for purposes of this clause
      (b)(ii) of this Section 2.7, to be calculated by using, as the Reference
      Rate, the Reference Rate applicable to a Rate Period (x) consisting of
      more than 182 Rate Period Days and
<PAGE>   13
                                                                              13


      (y) commencing on the date on which the Rate Period during which Failure
      to Deposit occurs commenced);

then the Auction Agent shall deliver a notice in the form of Exhibit H hereto to
the Broker-Dealers for such series not later than one Business Day after the
receipt of the payment from the Trust curing such Failure to Deposit and such
Late Charge.

            (c) A Failure to Deposit with respect to shares of Municipal
      Preferred shall have been cured (if such Failure to Deposit is not solely
      due to the willful failure to the Trust to make the required payment to
      the Auction Agent) with respect to any Rate Period if, within the
      respective time periods described immediately above, the Trust shall have
      paid to the Auction Agent (i) all accumulated and unpaid dividends on the
      shares of Municipal Preferred and (ii) without duplication, the Redemption
      Price for the shares of Municipal Preferred, if any, for which Notice of
      Redemption has been mailed; provided, however, that the foregoing clause
      (ii) shall not apply to the Trust's failure to pay the Redemption Price in
      respect of shares of Municipal Preferred when the related Notice of
      Redemption provides that redemption of such shares is subject to one or
      more conditions precedent and each such condition precedent shall not have
      been satisfied at the time or times and in the manner specified in such
      Notice of Redemption.

      2.8   Broker-Dealers.

            (a) Not later than 12:00 Noon, New York City time, on each Auction
      Date for any series of Municipal Preferred, the Trust shall pay to the
      Auction Agent an amount in cash equal to the aggregate fees payable to the
      Broker-Dealers for such series pursuant to Section 2.8 of the
      Broker-Dealer Agreements for such series. The Auction Agent shall apply
      such moneys as set forth in Section 2.8 of each such Broker-Dealer
      Agreement.

            (b) The Trust shall obtain the consent of the Auction Agent prior to
      selecting any Person to act as a Broker-Dealer, which consent shall not be
      unreasonably withheld.

            (c) The Auction Agent shall terminate any Broker-Dealer Agreement as
      set forth therein if so directed by the Trust, provided that at least one
      Broker-Dealer Agreement would be in effect for each series of Municipal
      Preferred after such termination.

            (d) Subject to the Auction Agent's having consented to the selection
      of the relevant Broker-Dealer pursuant to Section 2.8(b) hereof, the
      Auction Agent shall from time to time enter into such Broker-Dealer
      Agreements with one or more Broker-Dealers as the Trust shall request, and
      shall enter into such schedules to any such Broker-Dealer Agreements as
      the Trust shall request, which schedules, among
<PAGE>   14
                                                                              14


      other things, shall set forth the series of Municipal Preferred to which
      such Broker-Dealer Agreement relates.

      2.9   Ownership of Shares of Municipal Preferred.

            The Trust shall notify the Auction Agent if the Trust or any
affiliate of the Trust acquires any shares of Municipal Preferred of any series.
Neither the Trust nor any affiliate of the Trust shall submit any Order in any
Auction for Municipal Preferred, except as set forth in the next sentence. Any
Broker-Dealer that is an affiliate of the Trust may submit Orders in Auctions,
but only if such Orders are not for its own account. For purposes of this
Section 2.9, a Broker-Dealer shall not be deemed to be an affiliate of the Trust
solely because one or more of the directors or executive officers of such
Broker-Dealer or of any Person controlled by, in control of or under common
control with such Broker-Dealer is also a director of the Trust. The Auction
Agent shall have no duty or liability with respect to enforcement of this
Section 2.9.

      2.10  Access to and Maintenance of Auction Records.

            The Auction Agent shall, upon the receipt of prior written notice
from the Trust, afford to the Trust access at reasonable times during normal
business hours to all books, records, documents and other information concerning
the conduct and results of Auctions. The Auction Agent shall maintain records
relating to any Auction for a period of six years after such Auction, and such
records shall, in reasonable detail, accurately and fairly reflect the actions
taken by the Auction Agent hereunder.


3.    The Auction Agent as Dividend and
      Redemption Price Disbursing Agent.

            The Auction Agent, as dividend and redemption price disbursing
agent, shall pay to the Holders of shares of Municipal Preferred of any series
(i) on each Dividend Payment Date for such series, dividends on the shares of
Municipal Preferred of such series, (ii) on any date fixed for redemption of
shares of Municipal Preferred of any series, the Redemption Price of any shares
of such series called for redemption and (iii) any Late Charge related to any
payment of dividends or Redemption Price, in each case after receipt of the
necessary Trusts from the Trust with which to pay such dividends, Redemption
Price or Late Charge. The amount of dividends for any Rate Period for any series
of Municipal Preferred to be paid by the Auction Agent to the Holders of such
shares of such series will be determined by the Trust as set forth in Section 2
of Part I of Section 12.1 of the Bylaws with respect to such series. The
Redemption Price of any shares to be paid by the Auction Agent to the Holders
will be determined by the Trust as set forth in Section 11 of Part I of Section
12.1 of the Bylaws with respect to such series. The Trust shall notify the
Auction Agent in writing of a decision to redeem shares of any series of
Municipal Preferred at least five days prior to the date a Notice of Redemption
is required to be mailed to the Holders of the shares to be redeemed by
paragraph (c) of Section 11 of Part I of Section 12.1 of the
<PAGE>   15
                                                                              15


Bylaws. Such notice by the Trust to the Auction Agent shall contain
the information required by paragraph (c) of Section 11 of Part I of Section
12.1 of the Bylaws to be stated in the Notice of Redemption required to be
mailed by the Trust to such Holders.


4.    The Auction Agent as Transfer Agent and Registrar.

      4.1   Issue of Stock or Shares Certificates.

            Upon the Date of Original Issue of each series of Municipal
Preferred, one or more certificates representing all of the shares of such
series issued on such date shall be issued by the Trust and, at the request of
the Trust, registered in the name of Cede & Co. and countersigned by the Auction
Agent.

      4.2   Registration of Transfer of Shares.

            Shares of each series of Municipal Preferred shall be registered
solely in the name of the Securities Depository or its nominee.

      4.3   Removal of Legend on Restricted Shares.

            All requests for removal of legends on shares of Municipal Preferred
of any series indicating restrictions on transfer shall be accompanied by an
opinion of counsel stating that such legends may be removed and such shares
freely transferred, such opinion to be delivered under cover of a letter from a
Trust Officer authorizing the Auction Agent to remove the legend on the basis of
said opinion.

      4.4   Lost Stock or Share Certificates.

            The Auction Agent shall issue and register replacement certificates
for certificates represented to have been lost, stolen or destroyed upon the
fulfillment of such requirements as shall be deemed appropriate by the Trust and
the Auction Agent, subject at all times to provisions of law, the Bylaws of the
Trust governing such matters and resolutions adopted by the Trust with respect
to lost securities. The Auction Agent may issue new certificates in exchange for
and upon the cancellation of mutilated certificates. Any request by the Trust to
the Auction Agent to issue a replacement or new certificate pursuant to this
Section 4.4 shall be deemed to be a representation and warranty by the Trust to
the Auction Agent that such issuance will comply with such provisions of law and
the Bylaws and resolutions of the Trust.

<PAGE>   16
                                                                              16





      4.5   Disposition of Cancelled Certificates;
            Record Retention.

            The Auction Agent shall retain all stock or share certificates which
have been cancelled in transfer or exchange and all accompanying documentation
in accordance with applicable rules and regulations of the Securities and
Exchange Commission for two calendar years. Upon the expiration of this two-year
period, the Auction Agent shall deliver to the Trust the cancelled certificates
and accompanying documentation. The Trust shall also undertake to furnish to the
Securities and Exchange Commission and to the Board of Governors of the Federal
Reserve System, upon demand, at either the principal office or at any regional
office, complete, correct and current hard copies of any and all such records.
Thereafter such records shall not be destroyed by the Trust without the
concurrence of the Auction Agent.

      4.6   Stock or Record Books.

            For so long as the Auction Agent is acting as the transfer agent for
any series of Municipal Preferred pursuant to the Agreement, it shall maintain a
stock or record book containing a list of the Holders of the shares of Municipal
Preferred of each such series. In case of any request or demand for the
inspection of the stock or record books of the Trust or any other books in the
possession of the Auction Agent, the Auction Agent will notify the Trust and
secure instructions as to permitting or refusing such inspection. The Auction
Agent reserves the right, however, to exhibit the stock or record books or other
books to any Person in case it is advised by its counsel that its failure to do
so would be unlawful.

      4.7   Return of Funds.

            Any funds deposited with the Auction Agent hereunder by the Trust
for any reason, including but not limited to redemption of shares of Municipal
Preferred of any series, that remain unpaid after ninety days shall be repaid to
the Trust upon the written request of the Trust, together with interest, if any,
earned thereon.

5.    Representations and Warranties of the Trust.

            The Trust represents and warrants to the Auction Agent that:

            (a) the Trust is a duly organized and existing business trust in
      good standing under the laws of the State of its incorporation or
      organization and has full corporate power or all requisite power to
      execute and deliver the Agreement and to authorize, create and issue the
      shares of Municipal Preferred of each series, and the shares of Municipal
      Preferred of each series when issued, will be duly authorized, validly
      issued, fully paid and nonassessable;

            (b) the Agreement has been duly and validly authorized, executed and
      delivered by the Trust and constitutes the legal, valid and binding
      obligation of the Trust;
<PAGE>   17
                                                                              17


            (c) the form of the certificate evidencing the shares of Municipal
      Preferred of each series complies or will comply with all applicable laws
      of the State of its incorporation or organization;

            (d) when issued, the shares of Municipal Preferred of each series
      will have been duly registered under the Securities Act of 1933, as
      amended, and no further action by or before any governmental body or
      authority of the United States or of any state thereof is required in
      connection with the execution and delivery of the Agreement or will have
      been required in connection with the issuance of the shares of Municipal
      Preferred of each series;

            (e) the execution and delivery of the Agreement and the issuance and
      delivery of the shares of Municipal Preferred of each series do not and
      will not conflict with, violate or result in a breach of the terms,
      conditions or provisions of, or constitute a default under, the Agreement
      and Declaration of Trust (as amended to date) or the Bylaws of the Trust,
      any law or regulation, any order or decree of any court or public
      authority having jurisdiction, or any mortgage, indenture, contract,
      agreement or undertaking to which the Trust is a party or by which it is
      bound the effect of which conflict, violation, default or breach would be
      material to the Trust or the Trust and its subsidiaries taken as a whole;
      and

            (f) no taxes are payable upon or in respect of the execution of the
      Agreement or the issuance of the shares of Municipal Preferred of any
      series.


6.    The Auction Agent.

      6.1   Duties and Responsibilities.

            (a) The Auction Agent is acting solely as agent for the Trust
      hereunder and owes no fiduciary duties to any Person, other than the
      Trust, by reason of the Agreement.

            (b) The Auction Agent undertakes to perform such duties and only
      such duties as are specifically set forth in the Agreement, and no implied
      covenants or obligations shall be read into the Agreement against the
      Auction Agent.

            (c) In the absence of bad faith or negligence on its part, the
      Auction Agent shall not be liable for any action taken, suffered, or
      omitted or for any error of judgment made by it in the performance of its
      duties under the Agreement. The Auction Agent shall not be liable for any
      error of judgment made in good faith unless the Auction Agent shall have
      been negligent in ascertaining the pertinent facts.
<PAGE>   18
                                                                              18


      6.2   Rights of the Auction Agent.

            (a) The Auction Agent may rely and shall be protected in acting or
      refraining from acting upon any communication authorized hereby and upon
      any written instruction, notice, request, direction, consent, report,
      certificate, share certificate or other instrument, paper or document
      believed in good faith by it to be genuine. The Auction Agent shall not be
      liable for acting upon any telephone communication authorized hereby which
      the Auction Agent believes in good faith to have been given by the Trust
      or by a Broker-Dealer. The Auction Agent may record telephone
      communications with the Trust or with the Broker-Dealers or both.

            (b) The Auction Agent may consult with counsel of its choice 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.

            (c) The Auction Agent shall not be required to advance, expend or
      risk its own funds or otherwise incur or become exposed to financial
      liability in the performance of its duties hereunder.

            (d) The Auction Agent may perform its duties and exercise its rights
      hereunder either directly or by or through agents or attorneys and shall
      not be responsible for any misconduct or negligence on the part of any
      agent or attorney appointed by it with due care hereunder.

      6.3   Auction Agent's Disclaimer.

            The Auction Agent makes no representation as to the validity or
adequacy of the Agreement, the Broker-Dealer Agreements or the shares of
Municipal Preferred of any series except that the Auction Agent hereby
represents that the Agreement has been duly authorized, executed and delivered
by the Auction Agent and constitutes a legal and binding obligation of the
Auction Agent.

      6.4   Compensation, Expenses and Indemnification.

            (a) The Trust shall pay the Auction Agent from time to time
      reasonable compensation for all services rendered by it under the
      Agreement and the Broker-Dealer Agreements.

            (b) The Trust shall reimburse the Auction Agent upon its request for
      all reasonable out-of-pocket expenses, disbursements and advances incurred
      or made by the Auction Agent in accordance with any provision of the
      Agreement and the Broker-Dealer Agreements (including the reasonable
      compensation and the
<PAGE>   19
                                                                              19


      expenses and disbursements of its agents and counsel), except any expense
      or disbursement attributable to its negligence or bad faith.

            (c) The Trust shall indemnify the Auction Agent for and hold it
      harmless against any loss, liability or expense incurred without
      negligence or bad faith on its part, arising out of or in connection with
      its agency under the Agreement and the Broker-Dealer Agreements, including
      the costs and expenses of defending itself against any such claim or
      liability in connection with its exercise or performance of any of its
      duties hereunder and thereunder.


7.    Miscellaneous.

      7.1 Term of Agreement.

            (a) The term of the Agreement is unlimited unless it shall be
      terminated as provided in this Section 7.1. The Trust may terminate the
      Agreement at any time by so notifying the Auction Agent, provided that the
      Trust has entered into an agreement in substantially the form of the
      Agreement with a successor Auction Agent. The Auction Agent may terminate
      the Agreement upon written notice to the Trust on the date specified in
      such notice, which date shall be no earlier than 45 days after the date of
      delivery of such notice.

            (b) Except as otherwise provided in this paragraph (b), the
      respective rights and duties of the Trust and the Auction Agent under the
      Agreement with respect to any series of Municipal Preferred shall cease
      upon termination of the Agreement with respect to such series. The Trust's
      representations, warranties, covenants and obligations to the Auction
      Agent under Sections 5 and 6.4 hereof shall survive the termination of the
      Agreement with respect to any series of Municipal Preferred. Upon
      termination of the Agreement with respect to any series of Municipal
      Preferred, the Auction Agent shall, at the Trust's request, promptly
      deliver to the Trust copies of all books and records maintained by it with
      respect to Municipal Preferred in connection with its duties hereunder.

      7.2   Communications.

            Except for (i) communications authorized to be by telephone pursuant
to the Agreement or the Auction Procedures and (ii) communications in connection
with Auctions (other than those expressly required to be in writing), all
notices, requests and other communications to any party hereunder shall be in
writing (including telecopy or similar writing) and shall be given to such
party, addressed to it, at its address or telecopy number set forth below:


      If to the Trust,              [Name of Trust]
                                    One Financial Center
<PAGE>   20
                                                                              20


                                    Boston, MA  02111
                                          Attention:
                                    Telecopier No.: (617) 345-0919
                                    Telephone No.: (617) 426-3750

      If to the Auction Agent,      to the address or telecopy
                                    number set forth in the
                                    Request and Acceptance Letter,

or such other address or telecopy number as such party may hereafter specify for
such purpose by notice to the other party. Each such notice, request or
communication shall be effective when delivered at the address specified herein.
Communications shall be given on behalf of the Trust by a Trust Officer and on
behalf of the Auction Agent by telephone (confirmed by telecopy or in writing)
by an Authorized Officer.

      7.3   Entire Agreement.

            The Agreement contains the entire agreement between the parties
relating to, and superseding any prior agreement between the parties relating
to, the subject matter hereof, and there are no other representations,
endorsements, promises, agreements or understandings, oral, written or implied,
between the parties relating to the subject matter hereof except for agreements
relating to the compensation of the Auction Agent.

      7.4   Benefits.

            Nothing herein, express or implied, shall give to any Person, other
than the Trust, the Auction Agent and their respective successors and assigns,
any benefit of any legal or equitable right, remedy or claim hereunder.

      7.5   Amendment; Waiver.

            (a) The Agreement shall not be deemed or construed to be modified,
      amended, rescinded, cancelled or waived, in whole or in part, except by a
      written instrument signed by a duly authorized representative of the party
      to be charged.

            (b) Failure of either party hereto to exercise any right or remedy
      hereunder in the event of a breach hereof by the other party shall not
      constitute a waiver of any such right or remedy with respect to any
      subsequent breach.

      7.6   Successors and Assigns.

            The Agreement shall be binding upon, inure to the benefit of, and be
enforceable by, the respective successors and assigns of each of the Trust and
the Auction Agent.
<PAGE>   21
                                                                              21


      7.7   Severability.

            If any clause, provision or section hereof shall be ruled invalid or
unenforceable by any court of competent jurisdiction, the invalidity or
unenforceability of such clause, provision or section shall not affect any of
the remaining clauses, provisions or sections hereof.

      7.8   Governing Law.

            The Agreement shall be governed by and construed in accordance with
the laws of the State of New York.

            If the Trust is a Massachusetts business trust, the following
provision is deemed to be included in the Basic Terms:

      7.9   Declaration of Trust.

            The Trust's Agreement and Declaration of Trust (as amended) is on
file with the Secretary of the Commonwealth of Massachusetts. This Agreement has
been executed on behalf of the Trust by the Vice President and Treasurer of the
Trust acting in such capacity and not individually, and the obligations of the
Trust set forth in this Agreement are not binding upon any of the Trust's
trustees, officers or shareholders individually, but are binding only upon the
assets and property of the Trust.
<PAGE>   22
                                                                       EXHIBIT A


                                     FORM OF
                             BROKER-DEALER AGREEMENT
<PAGE>   23
                                                                       EXHIBIT B


                              SETTLEMENT PROCEDURES
<PAGE>   24
                                                                       EXHIBIT C


                                 [NAME OF TRUST]

                           NOTICE OF AUCTION DATE FOR

               MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES

                             ("Municipal Preferred")


         NOTICE IS HEREBY GIVEN that the Auction Date of the next Auction for
Series __ of the Trust's Municipal Preferred is scheduled to be ____________,
19__ and the next Dividend Payment Date for Series __ of the Trust's Municipal
Preferred will be _____________, 19__.

         [A Failure to Deposit in respect of the Series __ Municipal Preferred
currently exists. If, prior to 12:00 noon, New York City time, on the fourth
Business Day preceding the next scheduled Auction Date of the Series __
Municipal Preferred, such Failure to Deposit is not cured or the applicable Late
Charge is not paid, the next Auction will not be held. Notice of the next
Auction for the Series __ Municipal Preferred will be delivered when such
Failure to Deposit is cured and the applicable Late Charge is paid.(1)]


                                               [NAME OF TRUST]


- --------
(1) Include this language if a Failure to Deposit exists.
<PAGE>   25
                                                                       EXHIBIT D


                                 [NAME OF TRUST]

                          NOTICE OF PROPOSED CHANGE OF

                            LENGTH OF RATE PERIOD OF

           MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED STOCK [SHARES]

                             ("Municipal Preferred")



         [Name of Trust] (the "Trust") may exercise its option to designate the
Rate Period of its Series __ Municipal Preferred commencing [the first day of
the Special Rate Period] as a Special Rate Period.

         By 11:00 A.M., New York City time, on the second Business Day preceding
the first day of such proposed Special Rate Period, the Trust will notify     of
either (a) its determination to exercise such option, designating the length of
such Special Rate Period for such series or (b) its determination not to
exercise such option.


                                                  [NAME OF TRUST]




Dated:  _____ , 19__
<PAGE>   26
                                                                       EXHIBIT E


                                 [NAME OF TRUST]

                    NOTICE OF CHANGE OF LENGTH OF RATE PERIOD

               MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES

                             ("Municipal Preferred")


         NOTICE IS HEREBY GIVEN that [NAME OF TRUST] (the "Trust") has
determined to designate the Rate Period of its Series __ Municipal Preferred
commencing on [the first day of the Special Rate Period] as a Special Rate
Period.

         The Special Rate Period will be __________ [Rate Period Days].

         The Auction Date for the Special Rate Period is [the Business Day next
preceding the first day of such Special Rate Period].

         As a result of the Special Rate Period designation, the amount of
dividends payable on Series __ Municipal Preferred during the Special Rate
Period will be based on a 360-day year.

         The Special Rate Period shall not commence if (a) an Auction for shares
of Municipal Preferred shall not be held on such Auction Date for any reason or
(b) an Auction for shares of Municipal Preferred shall be held on such Auction
Date but Sufficient Clearing Bids for such shares shall not exist in such
Auction.

         The scheduled Dividend Payment Dates for such series of Municipal
Preferred during such Special Rate Period will be ____________ .

         [Special Redemption Provisions, if any]

         Attached hereto is a Municipal Preferred Basic Maintenance Report
showing that, as of the third Business Day next preceding such proposed Special
Rate Period, Moody's Eligible Assets (if Moody's is rating such shares of
Municipal Preferred) and S&P Eligible Assets (if S&P is rating such shares of
Municipal Preferred) each have an aggregate Discounted Value at least equal to
the Municipal Preferred Basic Maintenance Amount as of such Business Day
(assuming for purposes of the foregoing calculation that (i) the Maximum Rate is
the Maximum Rate on such Business Day as if such Business Day were the Auction
Date for the proposed Special Rate Period, and (ii) the Moody's Discount
<PAGE>   27
                                                                               2

Factors applicable to Moody's Eligible Assets are determined by reference to the
first Moody's Exposure Period longer than the Moody's Exposure Period then
applicable to the Trust.)


                                                    [NAME OF TRUST]




Dated: ______ , 19__
<PAGE>   28
                                                                       EXHIBIT F


                                 [NAME OF TRUST]

                      NOTICE OF DETERMINATION NOT TO CHANGE

                            LENGTH OF RATE PERIOD OF

               MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES

                             ("Municipal Preferred")


         NOTICE IS HEREBY GIVEN that [NAME OF TRUST] (the "Trust") has
determined not to exercise its option to designate a Special Rate Period of its
Series __ Municipal Preferred and the next succeeding Rate Period of such series
will be a Minimum Rate Period of ___ Rate Period Days.


                                                [NAME OF TRUST]



Dated: ______ , 19__
<PAGE>   29
                                                                       EXHIBIT G


                                 [NAME OF TRUST]

                                NOTICE OF CURE OF

                              FAILURE TO DEPOSIT ON

               MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES

                             ("Municipal Preferred")


        NOTICE IS HEREBY GIVEN that [NAME OF TRUST] (the "Trust") has cured its
Failure to Deposit and paid the applicable Late Charge with respect to its
Series __ Municipal Preferred. The dividend rate on the shares of Series __
Municipal Preferred for the current Dividend Period is   % per annum, the
Dividend Payment Date for the current Dividend Period is scheduled to
be_________, 19__ and the next Auction Date is scheduled to be __________, 19__.


                                                  [NAME OF TRUST]




Dated: _______ , 19__
<PAGE>   30
                                                                       EXHIBIT H


                                 [NAME OF TRUST]

                                NOTICE OF CURE OF

                              FAILURE TO DEPOSIT ON

               MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES

                             ("Municipal Preferred")


         NOTICE IS HEREBY GIVEN that [NAME OF TRUST] (the "Trust") has
cured its Failure to Deposit and paid the applicable Late Charge with respect to
its Series __ Municipal Preferred. The next Auction Date for the Series __
Municipal Preferred is scheduled to be _________ on 19__.


                                           [NAME OF TRUST]




Dated: ________, 19__
<PAGE>   31


                                                                       EXHIBIT I

                                 [NAME OF TRUST]

                                    NOTICE OF

                [CAPITAL GAINS] [AND] [TAXABLE ORDINARY INCOME](1)

                                  DIVIDEND FOR

               MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES

                             ("Municipal Preferred")

      NOTICE IS HEREBY GIVEN that the amount of the dividend payable on
_______________, 19__ for Series __ of the Trust's Municipal Preferred will be
determined by the Auction to be held on _____________, 19__. Up to [$ A ](2) [$
B ](3) per share of the dividend payable on such date as determined by such
Auction will consist of [capital gains](2) [ordinary income taxable for Federal
income tax purposes](3). If the dividend amount payable on such date as
determined by such Auction is less than [$ A ](2) [$ B ](3) per share, the
entire amount of the dividend will consist of [capital gains](2) [ordinary
income taxable for Federal income tax purposes](3). [To the extent such dividend
amount exceeds [$ A ] per share, any excess up to [$ B ] per share will consist
of ordinary income taxable for Federal income tax purposes.](4)/ Accordingly,
the aforementioned composition of the dividend payable on _______________, 19__
should be considered in determining Orders to be submitted with respect to the
Auction to be held on _______________, 19___. The Rate Multiple in effect for
such Auction will be    %.


                                               [NAME OF TRUST]

- --------

(1)   Include language with respect to capital gains, taxable ordinary income or
      both, depending on the character of the designation to be made with
      respect to the dividend(s).

(2)   Include bracketed material if a portion of the dividend will be designated
      capital gains.

(3)   Include bracketed material if a portion of the dividend will be designated
      ordinary income taxable for Federal income tax purposes and no portion of
      the dividend will be designated capital gains.

(4)   Include bracketed material if a portion of the dividend will be designated
      capital gains and a portion will be designated ordinary income taxable for
      Federal income tax purposes.
<PAGE>   32
                                                                               2


(Footnotes continued)

A  =  the maximum amount of capital gains allocated to such series of Municipal
      Preferred to be included in such dividend, divided by the number of shares
      of Municipal Preferred.

B  =  the maximum amount of ordinary income taxable for Federal income tax
      purposes allocated to such series of Municipal Preferred to be included in
      such dividend, divided by the number of shares in such series.


<PAGE>   1
                                                                  Exhibit (k)(2)

                                    COLONIAL
                             Broker-Dealer Agreement
                    Basic Terms for Acting as a Broker-Dealer
                       -----------------------------------

                                 July 20, 1999



            These basic terms ("Basic Terms") set forth the general terms and
conditions pursuant to which a broker-dealer identified in an Acceptance Letter
(together with its successors and assigns, a "BD") will act as a broker-dealer
for Municipal Auction Rate Cumulative Preferred ("Municipal Preferred") shares
issued by investment companies, now or hereafter organized, registered under the
Investment Company Act of 1940, as amended, as further identified by the Request
Letters (the "Trusts"), for which Colonial Management Associates, Inc.
("Adviser") is the investment adviser.
- --------------------------------------------------------------------------------


            Each Trust has issued or may issue shares of Municipal Preferred,
pursuant to its Declaration of Trust and By-Laws. A bank or trust company
specified in the Request Letter will act as the auction agent (the "Auction
Agent") of such Trust pursuant to authority granted it in the Auction Agency
Agreement.

            The By-Laws of each Trust shall provide that, for each Subsequent
Rate Period of any series of Municipal Preferred of such Trust then outstanding,
the Applicable Rate for such series for such Subsequent Rate Period shall,
except under certain conditions, be the rate per annum that the Auction Agent of
such Trust advises results from implementation of the Auction Procedures for
such series. The Board of Trustees of each Trust shall adopt a resolution
appointing the Auction Agent as auction agent for purposes of the Auction
Procedures for each series of Municipal Preferred of such Trust.

            The Auction Procedures of each Trust will require the participation
of one or more Broker-Dealers for each series of Municipal Preferred of such
Trust. BD will act as a Broker-Dealer for each series of Municipal Preferred of
each Trust identified in a Request Letter.


      1.    Definitions and Rules of Construction.

            1.1.  Terms Defined by Reference to By-Laws.

            Capitalized terms not defined herein shall have the respective
meanings specified in the By-Laws of the relevant Trust.
<PAGE>   2
                                                                               2


            1.2.  Terms Defined Herein.

            As used herein and in the Settlement Procedures, the following terms
shall have the following meanings, unless the context otherwise requires:

            (a) "Acceptance Letter" shall mean the letter from Adviser to BD
      pursuant to which the Adviser appoints BD as a Broker Dealer for each
      series of Municipal Preferred issued by any Trust that has executed a
      Request Letter.

            (b) "Agreement", with respect to any Trust, shall mean the Basic
      Terms, together with the Acceptance Letter and the Request Letter relating
      to one or more series of Municipal Preferred of such Trust and any other
      substantially similar agreement among such Trust, the Adviser, any Auction
      Agent for such Trust and/or BD.

            (c) "Auction" shall have the meaning specified in Section 2.1
      hereof.

            (d) "Auction Agency Agreement", with respect to any Trust, shall
      mean the Auction Agency Agreement between such Trust and the Auction Agent
      relating to one or more series of Municipal Preferred of such Trust.

            (e) "Auction Procedures", with respect to any Trust, shall mean the
      auction procedures constituting Part II of Section 12.1 of the By-Laws of
      such Trust as of the date of issuance of the Municipal Preferred shares of
      such Trust.

            (f) "Authorized Officer" of an Auction Agent shall mean each Senior
      Vice President, Vice President, Assistant Vice President, Assistant
      Treasurer and Assistant Secretary of such Auction Agent assigned to its
      Corporate Trust and Agency Group and every other officer or employee of
      such Auction Agent designated as an "Authorized Officer" for purposes of
      the Agreement in a communication to BD.

            (g) "BD Officer" shall mean each officer or employee of BD
      designated as a "BD Officer" for purposes of the Agreement in a
      communication to any Auction Agent.

            (h) "By-Laws", with respect to any Trust, shall mean the By-Laws, as
      amended and restated, of such Trust, a copy of which will be attached to
      the Request Letter of such Trust.

            (i) "Municipal Preferred" shall mean the preferred shares, no par
      value, of any Trust designated as its "Municipal Auction Rate Cumulative
      Preferred Shares" and bearing such further designation as to series as the
      Board of Trustees of such Trust or any committee thereof shall specify, as
      set forth in a Request Letter.
<PAGE>   3
                                                                               3


            (j) "Request Letter", with respect to any Trust, shall mean the
      letter from such Trust to the Adviser and the Auction Agent for such Trust
      pursuant to which such Trust appoints BD as a Broker-Dealer for each
      series of Municipal Preferred of such Trust.

            (k) "Settlement Procedures" shall mean the Settlement Procedures
      attached hereto as Exhibit A.

            1.3.  Rules of Construction.

            Unless the context or use indicates another or different meaning or
intent, the following rules shall apply to the construction of each Agreement:

            (a) Words importing the singular number shall include the plural
      number and vice versa.

            (b) The captions and headings herein are solely for convenience of
      reference and shall not constitute a part of such Agreement nor shall they
      affect its meaning, construction or effect.

            (c) The words "hereof", "herein", "hereto", and other words of
      similar import refer to such Agreement as a whole.

            (d) All references herein to a particular time of day shall be to
      New York City time.

      2. The Auction.

            2.1.  Purpose; Incorporation by Reference of Auction Procedures and
Settlement Procedures.

            (a) The provisions of the Auction Procedures of any Trust will be
followed by the Auction Agent of such Trust for the purpose of determining the
Applicable Rate for any Subsequent Rate Period of any series of Municipal
Preferred of such Trust for which the Applicable Rate is to be determined by an
Auction. Each periodic operation of such procedures is hereinafter referred to
as an "Auction."

            (b) All of the provisions contained in the Auction Procedures and
the Settlement Procedures are incorporated herein by reference in their entirety
and shall be deemed to be a part hereof to the same extent as if such provisions
were fully set forth herein.

            (c) BD agrees to act as, and assumes the obligations of, and
limitations and restrictions placed upon, a Broker-Dealer under each Agreement
for each series of Municipal Preferred. BD understands that other Persons
meeting the requirements specified in the definition of "Broker-Dealer"
contained in the Auction Procedures may execute Agreements and participate as
Broker-Dealers in Auctions.
<PAGE>   4
                                                                               4


            2.2.  Preparation for Each Auction.

            (a) Not later than 9:30 A.M. on each Auction Date for any series of
Municipal Preferred, the Auction Agent for such series shall advise the
Broker-Dealers for such series by telephone of the Maximum Rate therefor and the
Reference Rate(s) and Treasury Note Rate(s), as the case may be, used in
determining such Maximum Rate.

            (b) In the event that any Auction Date for any series of Municipal
Preferred shall be changed after the Auction Agent for such series has given the
notice referred to in clause (vi) of paragraph (a) of the Settlement Procedures,
or after the notice referred to in Section 2.5(a) hereof, if applicable, such
Auction Agent, by such means as such Auction Agent deems practicable, shall give
notice of such change to BD, if it is a Broker-Dealer for such series, not later
than the earlier of 9:15 A.M. on the new Auction Date or 9:15 A.M. on the old
Auction Date.

            (c) For purposes of maintaining its list of Existing Holders, the
Auction Agent for any series of Municipal Preferred from time to time may
request any Broker-Dealer to provide such Auction Agent with a list of Persons
who such Broker-Dealer believes should be Existing Holders based upon inquiries
of those Persons such Broker-Dealer believes are Beneficial Owners as a result
of the most recent Auction and with respect to each such Person, the number of
shares of such series of Municipal Preferred such Broker-Dealer believes are
owned by such Person. BD shall comply with any such request relating to a series
of Municipal Preferred in respect of which BD was named a Broker-Dealer, and the
Auction Agent shall keep confidential any such information so provided by BD and
shall not disclose any information so provided by BD to any Person other than
the Trust and BD.

            (d) BD agrees to maintain a list of customers relating to a series
of Municipal Preferred and to use its best efforts, subject to existing laws and
regulations, to contact the customers on such list whom BD believes may be
interested in participating in the Auction on each Auction Date, as a Potential
Holder or a Potential Beneficial Owner, for the purposes set forth in the
Auction Procedures. Nothing herein shall require BD to submit an Order for any
customer in any Auction.

            (e) The Auction Agent's registry of Existing Holders of shares of a
series of Municipal Preferred shall be conclusive and binding on BD. BD may
inquire of the Auction Agent between 3:00 P.M. on the Business Day preceding an
Auction for shares of a series of Municipal Preferred and 9:30 A.M. on the
Auction Date for such Auction to ascertain the number of shares of such series
in respect of which the Auction Agent has determined BD to be an Existing
Holder. If BD believes it is the Existing Holder of fewer shares of such series
than specified by the Auction Agent in response to BD's inquiry, BD may so
inform the Auction Agent of that belief. BD shall not, in its capacity as
Existing Holder of shares of such series, submit Orders in such Auction in
respect of shares of such series covering in the aggregate more than the number
of shares of such series specified by the Auction Agent in response to BD's
inquiry.
<PAGE>   5
                                                                               5


            2.3.  Auction Schedule; Method of Submission of Orders.

            (a) Each Trust and the Auction Agent for such Trust shall conduct
Auctions for Municipal Preferred in accordance with the schedule set forth
below. Such schedule with respect to any series of Municipal Preferred of any
Trust may be changed by the Auction Agent for such series with the consent of
such Trust, which consent shall not be unreasonably withheld. Such Auction Agent
shall give written notice of any such change to each Broker-Dealer of such
series. Such notice shall be given prior to the close of business on the
Business Day next preceding the first Auction Date on which such change shall be
effective.

<TABLE>
<CAPTION>
         Time                                      Event
         ----                                      -----
<S>                           <C>
By 9:30 A.M.                  Auction Agent for such series advises such Trust
                              and the Broker-Dealers for such series of the
                              applicable Maximum Rate and the Reference Rate(s)
                              and Treasury Note Rate(s), as the case may be,
                              used in determining such Maximum Rate as set forth
                              in Section 2.2(a) hereof.

9:30 A.M. - 1:30 P.M.         Auction Agent assembles information communicated
                              to it by Broker-Dealers as provided in Section
                              2(a) of the Auction Procedures of such Trust.
                              Submission Deadline is 1:30 P.M.

Not earlier than 1:30 P.M.    Auction Agent makes determinations pursuant to
                              Section 3(a) of the Auction Procedures of such
                              Trust.

By approximately 3:00 P.M.    Auction Agent advises Trust of results of Auction
                              as provided in Section 3(b) of the Auction
                              Procedures of such Trust.

                              Submitted Bids and Submitted Sell Orders are
                              accepted and rejected and shares of such series of
                              Municipal Preferred allocated as provided in
                              Section 4 of the Auction Procedures of such Trust.

                              Auction Agent gives notice of Auction results as
                              set forth in Section 2.4(a) hereof.

</TABLE>


            (b) BD shall submit Orders to the appropriate Auction Agent in
writing substantially in the form attached hereto as Exhibit B. BD shall submit
a separate Order to such Auction Agent for each Potential Holder or Existing
Holder with respect to whom BD is submitting an Order and shall not otherwise
net or aggregate such Orders prior to their submission to such Auction Agent.

            (c) BD shall deliver to the appropriate Auction Agent (i) a written
notice in substantially the form attached hereto as Exhibit C of transfers of
shares of Municipal Preferred to
<PAGE>   6
                                                                               6


BD from another Person other than pursuant to an Auction and (ii) a written
notice substantially in the form attached hereto as Exhibit D, of the failure of
any shares of Municipal Preferred to be transferred to or by any Person that
purchased or sold shares of Municipal Preferred through BD pursuant to an
Auction. Such Auction Agent is not required to accept any such notice described
in clause (i) for an Auction unless it is received by the Auction Agent by 3:00
P.M. on the Business Day preceding such Auction.

            (d) BD and other Broker-Dealers may submit Orders in Auctions for
their own accounts (including Orders for their own accounts where the Order is
placed beneficially for a customer) unless the relevant Trust shall have
notified BD and all other Broker-Dealers that they may no longer do so, in which
case Broker-Dealers may continue to submit Hold Orders and Sell Orders for their
own accounts.

            (e) BD agrees to handle its customers' orders in accordance with its
duties under applicable securities laws and rules.

            (f) To the extent that pursuant to Section 4 of the Auction
Procedures of any Trust, BD continues to hold, sells, or purchases a number of
shares that is fewer than the number of shares in an Order submitted by BD to
the Auction Agent in which BD designated itself as an Existing Holder or
Potential Holder in respect of customer Orders, BD shall make appropriate pro
rata allocations among its customers for which it submitted Orders of similar
tenor. If as a result of such allocations, any Beneficial Owner would be
entitled or required to sell, or any Potential Beneficial Owner would be
entitled or required to purchase, a fraction of a share of Municipal Preferred
on any Auction Date, BD shall, in such manner as it shall determine in its sole
discretion, round up or down the number of shares of Municipal Preferred to be
purchased or sold on such Auction Date by any Beneficial Owner or Potential
Beneficial Owner on whose behalf BD submitted an Order so that the number of
shares so purchased or sold by each such Beneficial Owner or Potential
Beneficial Owner on such Auction Date shall be whole shares of Municipal
Preferred.

            2.4.   Notices.

            (a) On each Auction Date for any series of Municipal Preferred, the
Auction Agent for such series shall notify BD, if BD is a Broker-Dealer of such
series, by telephone of the results of the Auction as set forth in paragraph (a)
of the Settlement Procedures. By approximately 11:30 A.M. on the Business Day
next succeeding such Auction Date, the relevant Auction Agent shall confirm to
BD in writing the disposition of all Orders submitted by BD in such Auction.

            (b) BD shall notify each Existing Holder, Potential Holder,
Beneficial Owner or Potential Beneficial Owner of shares of Municipal Preferred
with respect to whom BD has submitted an Order as set forth in paragraph (b) of
the Settlement Procedures and take such other action as is required of BD
pursuant to the Settlement Procedures.
<PAGE>   7
                                                                               7


            2.5.  Designation of Special Rate Period.

            (a) If any Trust delivers to its Auction Agent a notice of the
Auction Date for any series of Municipal Preferred of such Trust for a Rate
Period thereof that next succeeds a Rate Period that is not a Minimum Rate
Period in the form of Exhibit C to the Auction Agency Agreement, and BD is a
Broker-Dealer of such series, the Auction Agent shall deliver such notice to BD
as promptly as practicable after its receipt of such notice from such Trust.

            (b) If the Board of Trustees of any Trust proposes to designate any
succeeding Subsequent Rate Period of any series of Municipal Preferred of such
Trust as a Special Rate Period and such Trust delivers to its Auction Agent a
notice of such proposed Special Rate Period in the form of Exhibit D to the
Auction Agency Agreement, and BD is a Broker-Dealer for such series, such
Auction Agent shall deliver such notice to BD as promptly as practicable after
its receipt of such notice from the Trust.

            (c) If the Board of Trustees of any Trust determines to designate
such succeeding Subsequent Rate Period as a Special Rate Period, and such Trust
delivers to its Auction Agent a notice of such Special Rate Period in the form
of Exhibit E to the Auction Agency Agreement not later than 11:00 A.M. on the
second Business Day next preceding the first day of such Rate Period (or by such
later time or date, or both, as may be agreed to by such Auction Agent), and BD
is a Broker-Dealer for such series, such Auction Agent shall deliver such notice
to BD not later than 3:00 P.M. on such second Business Day (or, if such Auction
Agent has agreed to a later time or date, as promptly as practicable
thereafter).

            (d) If any Trust shall deliver to its Auction Agent a notice not
later than 11:00 A.M. on the second Business Day next preceding the first day of
any Rate Period (or by such later time or date, or both, as may be agreed to by
such Auction Agent) stating that such Trust has determined not to exercise its
option to designate such succeeding Subsequent Rate Period as a Special Rate
Period, in the form of Exhibit F to the Auction Agency Agreement, or shall fail
to timely deliver either such notice or a notice in the form of Exhibit E to the
Auction Agency Agreement], and BD is a Broker-Dealer for such series, such
Auction Agent shall deliver a notice in the form of Exhibit F to the Auction
Agency Agreement to BD not later than 3:00 P.M. on such second Business Day (or,
if such Auction Agent has agreed to a later time or date, as promptly as
practicable thereafter).

            2.6.  Allocation of Taxable Income.

            If any Trust delivers to its Auction Agent a notice in the form of
Exhibit I to the Auction Agency Agreement designating all or a portion of any
dividend on shares of any series of Municipal Preferred of such Trust to consist
of net capital gains or other income taxable for Federal income tax purposes,
and BD is a Broker-Dealer for such series, such Auction Agent shall deliver such
notice to BD on the Business Day following its receipt of such notice from such
Trust. On or prior to the Auction Date referred to in such notice, BD will
contact each of its customers that is a Beneficial Owner of shares of such
series of Municipal Preferred or a Potential Beneficial Owner of shares of such
series of Municipal Preferred interested in submitting an Order in the Auction
to be held on such Auction Date, and BD will notify such Beneficial Owners and
<PAGE>   8
                                                                               8


Potential Beneficial Owners of the contents of such notice. BD will be deemed to
have notified such Beneficial Owners and Potential Beneficial Owners if, for
each of them, (i) BD makes a reasonable effort to contact such Beneficial Owner
or Potential Beneficial Owner by telephone, and (ii) upon failing to contact
such Beneficial Owner or Potential Beneficial Owner by telephone BD mails
written notification to such Beneficial Owner or Potential Beneficial Owner at
the mailing address indicated in the account records of BD.

            The Auction Agent for any series of Municipal Preferred shall be
required to notify BD if it is a Broker-Dealer for such series within two
Business Days after each Auction of such series that involves an allocation of
income taxable for Federal income tax purposes as to the dollar amount per share
of such taxable income and income exempt from Federal income taxation included
in the related dividend.

            2.7.  Failure to Deposit.

            (a)  If:

                (i) any Failure to Deposit shall have occurred with respect to
      shares of any series of Municipal Preferred of any Trust during any Rate
      Period thereof (other than any Special Rate Period of more than 364 Rate
      Period Days or any Rate Period succeeding any Special Rate Period of more
      than 364 Rate Period Days during which a Failure to Deposit occurred that
      has not been cured), but, prior to 12:00 Noon, New York City time, on the
      third Business Day next succeeding the date on which such Failure to
      Deposit occurred, such Failure to Deposit shall have been cured in
      accordance with Section 2.7 of the Auction Agency Agreement and such Trust
      shall have paid to the Auction Agent for such series the applicable Late
      Charge as described in Section 2.7 of the Auction Agency Agreement,

then, if BD is a Broker-Dealer for such series, such Auction Agent shall deliver
a notice in the form of Exhibit G to the Auction Agency Agreement by first-class
mail, postage prepaid, to BD not later than one Business Day after its receipt
of the payment from such Trust curing such Failure to Deposit and such Late
Charge.

            (b)  If:

                (i) any Failure to Deposit shall have occurred with respect to
      shares of any series of Municipal Preferred of any Trust during any Rate
      Period thereof (other than any Special Rate Period of more than 364 Rate
      Period Days or any Rate Period succeeding any Special Rate Period of more
      than 364 Rate Period Days during which a Failure to Deposit occurred but
      has not been cured), and, prior to 12:00 Noon, New York City time, on the
      third Business Day next succeeding the date on which such Failure to
      Deposit occurred, such Failure to Deposit shall not have been cured as
      described in Section 2.7 of the Auction Agency Agreement or such Trust
      shall not have paid to the Auction Agent for such series the applicable
      Late Charge described in Section 2.7 of the Auction Agency Agreement; or
<PAGE>   9
                                                                               9


               (ii) any Failure to Deposit shall have occurred with respect to
      shares of any series of Municipal Preferred of any Trust during a Special
      Rate Period thereof of more than 364 Rate Period Days, or during any Rate
      Period thereof succeeding any Special Rate Period of more than 364 Rate
      Period Days during which a Failure to Deposit occurred that has not been
      cured, and, prior to 12:00 noon, New York City time, on the fourth
      Business Day preceding the Auction Date for the Rate Period subsequent to
      such Rate Period, such Failure to Deposit shall not have been cured as
      described in Section 2.7 of the Auction Agency Agreement or such Trust
      shall not have paid to the Auction Agent for such series the applicable
      Late Charge described in Section 2.7 of the Auction Agency Agreement;

then such Auction Agent shall deliver a notice in the form of Exhibit H to the
Auction Agency Agreement to the Broker-Dealers for such series not later than
one Business Day after the receipt of the payment from such Trust curing such
Failure to Deposit and such Late Charge.

            2.8.  Service Charge to be Paid to BD.

            On the Business Day next succeeding each Auction Date for any series
of Municipal Preferred specified in, or on Exhibit A to, the Request Letter of
any Trust, the Auction Agent for such series shall pay to BD from moneys
received from such Trust an amount equal to the product of (a) (i) in the case
of any Auction Date immediately preceding a Rate Period of such series
consisting of 364 Rate Period Days or fewer, 1/4 of 1%, or (ii) in the case of
any Auction Date immediately preceding a Rate Period of such series consisting
of more than 364 Rate Period Days, such percentage as may be agreed upon by such
Trust and BD with respect to such Rate Period, times (b) a fraction, the
numerator of which is the number of Rate Period Days in the Rate Period therefor
beginning on such Business Day and the denominator of which is 365 if such Rate
Period consists of 7 Rate Period Days and 360 for all other Rate Periods, times
(c) $25,000 times (d) the sum of (i) the aggregate number of shares of such
series placed by BD in such Auction that were (A) the subject of Submitted Bids
of Existing Holders submitted by BD and continued to be held as a result of such
submission and (B) the subject of Submitted Bids of Potential Holders submitted
by BD and purchased as a result of such submission plus (ii) the aggregate
number of shares of such series subject to valid Hold Orders (determined in
accordance with paragraph (d) of Section 2 of the Auction Procedures) submitted
to the Auction Agent by BD plus (iii) the number of shares of Municipal
Preferred deemed to be subject to Hold Orders of Existing Holders pursuant to
paragraph (c) of Section 2 of the Auction Procedures of such Trust that were
acquired by BD for its own account or were acquired by BD for its customers who
are Beneficial Owners.

            For purposes of subclause (d)(iii) of the foregoing paragraph, if
any Existing Holder or Beneficial Owner who acquired shares of any series of
Municipal Preferred through BD transfers those shares to another Person other
than pursuant to an Auction, then the Broker-Dealer for the shares so
transferred shall continue to be BD; provided, however, that if the transfer was
effected by, or if the transferee is, a Broker-Dealer other than BD, then such
Broker-Dealer shall be the Broker-Dealer for such shares.
<PAGE>   10
                                                                              10


            2.9.  Settlement.

            (a) If any Existing Holder or Beneficial Owner with respect to whom
BD has submitted a Bid or Sell Order for shares of Municipal Preferred of any
series that was accepted in whole or in part fails to instruct its Agent Member
to deliver the shares of Municipal Preferred subject to such Bid or Sell Order
against payment therefor, BD, if it knows the identity of such Agent Member,
shall instruct such Agent Member to deliver such shares against payment therefor
and, if such Agent Member fails to comply with such instructions, BD may deliver
to the Potential Holder or Potential Beneficial Owner with respect to whom BD
submitted a Bid for shares of Municipal Preferred of such series that was
accepted in whole or in part a number of shares of Municipal Preferred of such
series that is less than the number of shares of Municipal Preferred of such
series specified in such Bid to be purchased by such Potential Holder or
Potential Beneficial Owner.

            (b) Neither the Auction Agent nor the Trust shall have any
responsibility or liability with respect to the failure of an Existing Holder,
Beneficial Owner, Potential Holder or Potential Beneficial Owner or its
respective Agent Member to deliver shares of Municipal Preferred of any series
or to pay for shares of Municipal Preferred of any series sold or purchased
pursuant to the Auction Procedures or otherwise.

            (c) Notwithstanding any provision of the Auction Procedures or the
Settlement Procedures to the contrary, in the event BD is an Existing Holder
with respect to shares of a series of Municipal Preferred and the Auction
Procedures provide that BD shall be deemed to have submitted a Sell Order in an
Auction with respect to such shares if BD fails to submit an Order in that
Auction with respect to such shares, BD shall have no liability to any Person
for failing to sell such shares pursuant to such a deemed Sell Order if (i) such
shares were transferred by the beneficial owner thereof without notification of
such transfer in compliance with the Auction Procedures or (ii) BD has indicated
to the Auction Agent pursuant to Section 2.2(e) of this Agreement that,
according BD's records, BD is not the Existing Holder of such shares.

            (d) Notwithstanding any provision of the Auction Procedures or the
Settlement Procedures to the contrary, in the event an Existing Holder or
Beneficial Owner of shares of a series of Municipal Preferred with respect to
whom a Broker-Dealer submitted a Bid to the Auction Agent for such shares that
was accepted in whole or in part, or submitted or is deemed to have submitted a
Sell Order for such shares that was accepted in whole or in part, fails to
instruct its Agent Member to deliver such shares against payment therefor,
partial deliveries of shares of Municipal Preferred that have been made in
respect of Potential Holders' or Potential Beneficial Owners' Submitted Bids for
shares of such series that have been accepted in whole or in part shall
constitute good delivery to such Potential Holders and Potential Beneficial
Owners.

            (e) Notwithstanding the foregoing terms of this Section, any
delivery or non-delivery of shares of Municipal Preferred of any series which
represents any departure from the results of an Auction for shares of such
series, as determined by the Auction Agent, shall be of no effect for purposes
of the registry of Existing Holders maintained by the Auction Agent pursuant to
the Auction Agency Agreement unless and until the Auction Agent shall have been
notified of such delivery or non-delivery.
<PAGE>   11
                                                                              11


            (f) The Auction Agent shall have no duty or liability with respect
to enforcement of this Section 2.9.

      3.    The Auction Agent.

            3.1.  Duties and Responsibilities.

            (a) Each Auction Agent is acting solely as agent for the Trusts with
whom such Auction Agent has entered into Request Letters and owes no fiduciary
duties to any other Person, other than such Trusts, by reason of the Agreements
to which such Auction Agent is a party.

            (b) Each Auction Agent undertakes to perform such duties and only
such duties as are specifically set forth in the Agreements to which it is a
party, and no implied covenants or obligations shall be read into such
Agreements against such Auction Agent.

            (c) In the absence of bad faith or negligence on its part, each
Auction Agent shall not be liable for any action taken, suffered, or omitted or
for any error of judgment made by it in the performance of its duties under the
Agreements to which it is a party. Each Auction Agent shall not be liable for
any error of judgment made in good faith unless such Auction Agent shall have
been negligent in ascertaining the pertinent facts.

            3.2.  Rights of the Auction Agents.

            (a) Each Auction Agent may rely and shall be protected in acting or
refraining from acting upon any communication authorized hereby and upon any
written instruction, notice, request, direction, consent, report, certificate,
share certificate or other instrument, paper or document believed in good faith
by it to be genuine. Each Auction Agent shall not be liable for acting upon any
telephone communication authorized by the Agreements to which it is a party that
such Auction Agent believes in good faith to have been given by the appropriate
Trust, by the Adviser or by a Broker-Dealer. Each Auction Agent may record
telephone communications with the Broker-Dealers.

            (b) Each Auction Agent may consult with counsel of its choice 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.

            (c) Each Auction Agent shall not be required to advance, expend or
risk its own funds or otherwise incur or become exposed to financial liability
in the performance of its duties hereunder.

            3.3.  Auction Agents' Disclaimers.

            Each Auction Agent makes no representation as to the validity or
adequacy of the Agreements to which it is a party, the Auction Agency Agreements
to which it is a party or the shares of Municipal Preferred of any series.
<PAGE>   12
                                                                              12


      4.  Miscellaneous.

            4.1.  Termination.

            Any party to any Agreement may terminate such Agreement at any time
on five days' notice to the other parties to such Agreement, provided that the
Trust party to such Agreement shall not terminate the Agreement unless at least
one Broker-Dealer Agreement would be in effect for each series of Municipal
Preferred of such Trust after such termination. Each Agreement shall
automatically terminate with respect to any series of Municipal Preferred with
respect to which the relevant Auction Agency Agreement has terminated.

            4.2.  Participant in Securities Depository; Payment of Dividends in
Same-Day Funds.

            (a) BD is, and shall remain for the term of the Agreements, a member
of, or participant in, the Securities Depository (or an affiliate of such a
member or participant).

            (b) BD represents that it (or if BD does not act as Agent Member,
one of its affiliates) shall make all dividend payments on the Municipal
Preferred available in same-day funds on each Dividend Payment Date to customers
that use BD or affiliate as Agent Member.

            4.3.  Communications.

            Except for (i) communications authorized to be by telephone by the
Agreement of any Trust or the Auction Procedures of such Trust and (ii)
communications in connection with Auctions (other than those expressly required
to be in writing), all notices, requests and other communications to any party
under such Agreement shall be in writing (including telecopy or similar writing)
and shall be given to such party, addressed to it, at its address or telecopy
number set forth below:

      If to a Trust,       [Name of Trust]
        addressed:         One Financial Center
                           Boston, MA 02111
                           Attention: Secretary
                           Telecopier No.: (617) 345-0919
                           Telephone No.:  (617) 426-3750

      If to the Adviser,   Colonial Management Associates, Inc.
        addressed:         One Financial Center
                           Boston, MA 02111
                           Attention: Secretary


      If to BD, to the address or telecopy number as set forth in the Acceptance
Letter.
<PAGE>   13
                                                                              13


      If to an Auction Agent, to the address or telecopy number as set forth in
the Request Letter, or such other address or telecopy number as such party may
hereafter specify for such purpose by notice to the other parties. Each such
notice, request or communication shall be effective when delivered at the
address specified herein. Communications shall be given on behalf of BD by a BD
Officer and on behalf of an Auction Agent by an Authorized Officer of such
Auction Agent. BD may record telephone communications with any Auction Agent.

            4.4.  Entire Agreement.

            Each Agreement contains the entire agreement among the parties
thereto relating to the subject matter thereof, and there are no other
representations, endorsements, promises, agreements or understandings, oral,
written or implied, among the parties thereto relating to the subject matter
thereof. Each Agreement supersedes any prior agreement to which BD was a party
in respect of any Trust.

            4.5.  Benefits.

            Nothing in any Agreement, express or implied, shall give to any
person, other than the Trust party to such Agreement, the Adviser, the Auction
Agent party to such Agreement and BD and their respective successors and
assigns, any benefit or any legal or equitable right, remedy or claim under such
Agreement.

            4.6.  Amendment; Waiver.

            (a) Each Agreement shall not be deemed or construed to be modified,
amended, rescinded, canceled or waived, in whole or in part, except by a written
instrument signed by a duly authorized representative of the party to be
charged.

            (b) Failure of any party to any Agreement to exercise any right or
remedy thereunder in the event of a breach thereof by any other party shall not
constitute a waiver of any such right or remedy with respect to any subsequent
breach.

            4.7.  Successors and Assigns.

            Each Agreement shall be binding upon, inure to the benefit of, and
be enforceable by, the respective successors and assigns of the Trust party to
such Agreement, the Adviser, the Auction Agent party to such Agreement and BD.

            4.8.  Severability.

            If any clause, provision or section hereof shall be ruled invalid or
unenforceable by any court of competent jurisdiction, the invalidity or
unenforceability of such clause, provision or section shall not affect any of
the remaining clauses, provisions or sections hereof.
<PAGE>   14
                                                                              14

            4.9.  GOVERNING LAW.

            EACH AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK.

            4.10.  Declaration of Trust.

            The Declaration of each Trust is on file with the Secretary of State
of the Commonwealth of Massachusetts. Each Agreement to which a Trust that is a
Massachusetts business trust is a party has been duly executed on behalf of such
Trust by an officer of such Trust acting in such capacity and not individually,
and the obligations of such Trust set forth in such Agreement are not binding
upon any of such Trust's trustees, officers or shareholders individually, but
are binding only upon the assets and property of such Trust.

<PAGE>   1
                                                                     Exhibit (l)

                                August 20, 1999



Colonial Investment Grade Municipal Trust
One Financial Center
Boston, Massachusetts 02111

Ladies and Gentlemen:

     We have acted as counsel to Colonial Investment Grade Municipal Trust (the
"Trust") in connection with the Registration Statement of the Trust on Form N-2
(File No. 333-81131) under the Securities Act of 1933 and the Investment Company
Act of 1940 (File No. 811-05785) (the "Registration Statement") as amended (the
"Acts"), relating to the proposed sale of an aggregate of 2,400 Municipal
Auction Rate Cumulative Preferred Shares, Series M, each with a liquidation
preference of $25,000 per share plus accumulated but unpaid dividends, if any,
thereon (whether or not earned or declared) (the "Preferred Shares"). The
Preferred Shares are to be sold pursuant to the Underwriting Agreement
substantially in the form filed as an exhibit to the Registration Statement (the
"Underwriting Agreement") among the Trust, Colonial Management Associates, Inc.,
and Salomon Smith Barney Inc.

     We have examined the Trust's Agreement and Declaration of Trust on file in
the office of the Secretary of State of the Commonwealth of Massachusetts, as
amended (the "Declaration of Trust"), and the Trust's Amended and Restated
By-Laws (the "Amended By-Laws"), and are familiar with the actions taken by the
Trust in connection with the issuance and sale of the Preferred Shares. We have
also examined such other documents and records as we have deemed necessary for
the purposes of this opinion.
     Based upon the foregoing, we are of the opinion that:

     1.   The Trust is a duly organized and validly existing unincorporated
association under the laws of the Commonwealth of Massachusetts.



<PAGE>   2

Colonial Investment Grade Municipal Trust      -2-               August 20, 1999


     2.   The Preferred Shares have been duly authorized and, when issued and
paid for in accordance with the Underwriting Agreement, will be validly issued,
fully paid and nonassessable by the Trust.

     The Trust is an entity of the type commonly known as a "Massachusetts
business trust." Under Massachusetts law, shareholders could, under certain
circumstances, be held personally liable for the obligations of the Trust.
However, the Declaration of Trust disclaims shareholder liability for acts or
obligations of the Trust and requires that a notice of such disclaimer be given
in each note, bond, contract, instrument, certificate or undertaking entered
into or executed by the Trust or its Trustees. The Declaration of Trust provides
for indemnification out of the property of the Trust for all loss and expense of
any shareholder of the Trust held personally liable solely by reason of his
being or having been a shareholder. Thus, the risk of a shareholder's incurring
financial loss on account of being a shareholder is limited to circumstances in
which the Trust itself would be unable to meet its obligations.

     We understand that this opinion is to be used in connection with the
registration of the Preferred Shares for offering and sale pursuant to the Act.
We consent to the filing of this opinion with and as part of the Registration
Statement and to the references to our firm in the related prospectus under the
captions "Tax Matters" and "Legal Opinions" in the Prospectus contained in the
Registration Statement.


                                        Very truly yours,


                                        /s/ Ropes & Gray
                                        ------------------------
                                        Ropes & Gray






<PAGE>   1
                                                                     Exhibit (n)

                       CONSENT OF INDEPENDENT ACCOUNTANTS




We hereby consent to the use in the Statement of Additional Information
constituting part of this Pre-Effective Amendment No. 2 to the registration
statement on Form N-2 (the "Registration Statement") of our report dated
February 11, 1999, relating to the financial statements and financial highlights
of Colonial Investment Grade Municipal Trust, which appears in such Statement of
Additional Information, and to the incorporation by reference of our report into
the Prospectus which constitutes part of this Registration Statement. We also
consent to the references to us under the heading "Independent Accountants" in
such Statement of Additional Information and to the references to us under the
headings "Financial Highlights" and "Experts" in such Prospectus.




/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP
Boston, Massachusetts
August 20, 1999



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