COLONIAL INVESTMENT GRADE MUNICIPAL TRUST
N-2, 1999-06-18
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<PAGE>   1
   AS FILED WITH THE U.S. SECURITIES AND EXCHANGE COMMISSION ON JUNE 18, 1999

                                          SECURITIES ACT FILE NO.   333-
                                  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.                    [ ]
                                                -----------

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

                                     and/or

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

                    Amendment No.       6                          [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)

Name and Address of
Agent for Service                              Copy to

William J. Ballou, Esq.                        John M. Loder, Esq.
Colonial Management Associates, Inc.           Ropes & Gray
One Financial Center                           One International Place
Boston, Massachusetts 02111-2621               Boston, Massachusetts 02110-2624


                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) Transmitted to the designated lockbox at Mellon Bank in Pittsburgh, PA.

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 MUNICIPAL INCOME 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 May 31,
                  Other Securities                   1999; and Description
                                                     of Municipal Preferred;
                                                     Description of Common
                                                     Shares; Certain Provisions
                                                     in the Agreement and
                                                     Declaration of Trust
</TABLE>


<PAGE>   3

                 SUBJECT TO COMPLETION, DATED ___________, 1999


         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.

PROSPECTUS                       $ _____________


                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST

   MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED ("MUNICIPAL PREFERRED") SHARES
                             _____ SHARES, SERIES __
                    LIQUIDATION PREFERENCE $25,000 PER SHARE

                                   ----------

         Colonial Investment Grade Municipal Trust is selling __ Series __
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 between the date of issue and ___________ __, 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 the 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 40 of this Prospectus for a table of contents of the Statement of
Additional Information.

                                   ----------

         INVESTING IN THE SHARES OF MUNICIPAL PREFERRED INVOLVES CERTAIN RISKS.
SEE THE "RISK FACTORS AND SPECIAL CONSIDERATIONS" SECTION BEGINNING ON PAGE 5 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           $______
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 on or about , 1999.

                                   ----------

 ____________ ___, 1999


<PAGE>   4
         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

                                                                            PAGE
                                                                            ----

PROSPECTUS SUMMARY...........................................................  1

RISK FACTORS AND SPECIAL CONSIDERATIONS......................................  5

FINANCIAL HIGHLIGHTS.........................................................  8

THE TRUST.................................................................... 10

USE OF PROCEEDS.............................................................. 10

CAPITALIZATION AT MAY 31, 1999............................................... 11

PORTFOLIO COMPOSITION........................................................ 11

INVESTMENT OBJECTIVES AND POLICIES........................................... 12

MANAGEMENT OF THE TRUST...................................................... 19

THE AUCTION.................................................................. 20

DETERMINATION OF NET ASSET VALUE............................................. 23

DESCRIPTION OF MUNICIPAL PREFERRED........................................... 23

RATING AGENCY GUIDELINES..................................................... 29

DESCRIPTION OF COMMON SHARES................................................. 30

CERTAIN PROVISIONS IN THE AGREEMENT AND DECLARATION OF TRUST................. 31

REPURCHASE OF COMMON SHARES; CONVERSION TO OPEN-END FUND..................... 31

TAX MATTERS.................................................................. 32

CUSTODIAN, TRANSFER AGENT, DIVIDEND DISBURSING AGENT AND REGISTRAR........... 35

UNDERWRITING................................................................. 35

LEGAL OPINIONS............................................................... 35

REPORTS TO SHAREHOLDERS...................................................... 36

EXPERTS  .................................................................... 36

FURTHER INFORMATION.......................................................... 36

GLOSSARY .................................................................... 37

TABLE OF CONTENTS OF STATEMENT OF ADDITIONAL INFORMATION..................... 41


<PAGE>   5
                               PROSPECTUS SUMMARY

         This summary highlights some 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. You should also refer to the
Glossary, which defines certain terms used in this Prospectus. 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 ____ shares of Series
                           __ 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. ________________ 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 the 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, as amended. 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,
                           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 decide,
                           subject to certain limitations and only if it gives
                           certain 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 _____. The Trust may specify different
                           dividend payment dates for certain special dividend
                           periods.


<PAGE>   6
                           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 between the date of issue
                           and ________ ___, 1999 will be ___% per year.  For
                           each subsequent dividend period, the auction agent
                           (____________) 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. It is determined
                           by 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 sought in the bids for that auction, 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, 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 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 _______ __, 1999, the asset
                           coverage of the Municipal Preferred shares as
                           required by the Investment Company Act of 1940 would
                           be approximately ___% if the Trust were to issue all
                           Municipal Preferred shares offered in this
                           Prospectus, representing approximately ___% of the
                           Trust's capital.

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,
                           necessary to restore the required asset coverage. 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 certain
                           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 certain
                           special dividend rate periods, any applicable
                           premium.


                                       -2-



<PAGE>   7
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 stock 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 certain 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 tax-exempt income earned on the
                           Trust's investments. All or a portion of the 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 80% of its assets in investment grade municipal
                           obligations (which are considered to be bonds rated
                           BBB or higher by Standard & Poor's Ratings Group
                           ("Standard & Poor's"),



                                      -3-
<PAGE>   8
                           comparably rated by another national rating service
                           or 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
                           Investors Service, Inc. ("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

                           *        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, as amended, 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 wholly
                           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.



                                       -4-



<PAGE>   9
                     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 bonds of comparable quality generally involve
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 securities cause, in part, this risk of principal and
interest and may result in nonpayment of principal or interest or restructuring
of debt obligation and, possibly, a reduction in the Trust's distributions to
shareholders and net asset value. Medium and lower quality tax-exempt securities
are considered to be speculative to varying degrees. While such 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 municipal obligations that are not rated by a major
rating agency, the Trust will be more reliant 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;

         *        its sensitivity to economic conditions and trends;

         *        any operating history of and the community support for the
                  facility financed by the issue;

         *        the ability of the issuer's management; and

         *        regulatory matters.

         The Advisor may attempt to reduce the credit 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 availability of such
securities for the Trust to purchase and 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 Advisor may attempt to reduce the risks of investing in
medium or lower rated or unrated municipal obligations to the greatest extent
practicable through the use of credit analysis.

         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



                                       -5-

<PAGE>   10
Obligations." Zero coupon bonds are issued and traded at a discount from their
face amounts. The amount of the discount varies depending on, among others, the
following factors:

         *        the time remaining until maturity of the bonds;

         *        prevailing interest rates;

         *        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, 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." 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 may write covered call and
put options and purchase call and put options on debt securities, including
options not traded on national securities exchanges. For hedging purposes the
Trust may purchase or sell: (1) interest rate and tax-exempt bond index futures
contracts, and (2) puts and call options on such contracts and indices. The
Trust may not purchase or sell futures contracts or purchase related options if
immediately thereafter the sum of the amount of deposits for initial margin or
premiums on the existing futures and related option positions would exceed 5% of
the market value of the Trust's total assets.

         The Trust's hedging transactions are designed to reduce volatility but
come at some cost. For example, the Trust may try to limit its risk of loss from
a decline in price of a portfolio security by purchasing a put option. However,
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 and
may not do so.

         PRIVATE ACTIVITY BONDS. The Trust may invest in certain tax-exempt
securities classified as "private activity bonds." These bonds may subject
certain 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.



                                       -6-



<PAGE>   11
         *        Neither broker-dealers nor the Trust are obligated to purchase
                  shares of the Municipal Preferred in an auction or otherwise
                  nor is the Trust required to redeem shares of the 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 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 Municipal
Preferred between auctions at a price per share of less than $25,000. You may
transfer shares 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 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.



                                       -7-



<PAGE>   12
                              FINANCIAL HIGHLIGHTS

         The table below sets forth certain specified information for a 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 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 YEAR ENDED DECEMBER 31,
                    ---------------------------------------------------------------------------------------------------------
                      1998      1997       1996     1995      1994      1993       1992        1991        1990       1989(a)
                    --------  --------  --------  --------  --------  --------   --------    --------    --------    --------
<S>                 <C>       <C>       <C>       <C>       <C>       <C>        <C>         <C>         <C>         <C>
Net asset value --
  beginning
  of period ....... $ 11.430  $ 10.870  $ 11.050  $  9.930  $ 11.050  $ 10.960   $ 11.090    $ 10.850    $ 11.020    $ 11.160
                    --------  --------  --------  --------  --------  --------   --------    --------    --------    --------
Net investment
  income ..........    0.600     0.620     0.630     0.644     0.673     0.788      0.848       0.886       0.942(b)    0.535 (c)
Net realized
  and unrealized
  gain (loss) .....    0.069     0.575    (0.193)    1.111    (1.121)    0.090     (0.132)      0.248      (0.167)     (0.107)
                    --------  --------  --------  --------  --------  --------   --------    --------    --------    --------
  Total from
    investment
    operations ....    0.669     1.195     0.437     1.755    (0.448)    0.878      0.716       1.134       0.775       0.428
                    --------  --------  --------  --------  --------  --------   --------    --------    --------    --------
Distributions:
  From net
    investment
    income ........   (0.607)   (0.635)   (0.617)   (0.635)   (0.672)   (0.788)    (0.846)     (0.894)     (0.945)     (0.524)
  In excess
    of net
    investment
    income ........   (0.002)       --        --        --        --        --         --          --          --          --
                    --------  --------  --------  --------  --------  --------   --------    --------    --------    --------
    Total
      distributions   (0.609)   (0.635)   (0.617)   (0.635)   (0.672)   (0.788)    (0.846)     (0.894)     (0.945)     (0.524)
Expenses incurred
  from initial
  public offering..       --        --        --        --        --        --         --          --          --          --
                    --------  --------  --------  --------  --------  --------   --------    --------    --------    --------
Net asset value --
  end of period ... $ 11.490  $ 11.430  $ 10.870  $ 11.050  $  9.930  $ 11.050   $ 10.960    $ 11.090    $ 10.850    $ 11.020
                    ========  ========  ========  ========  ========  ========   ========    ========    ========    ========
Per share market
  value -- end
  of period ....... $ 11.187  $ 10.560  $ 10.130  $  9.880  $  9.250  $ 10.750   $ 11.750    $ 11.750          -- (d)      -- (d)
                    ========  ========  ========  ========  ========  ========   ========    ========    ========    ========
Total return
  based on net
  asset value .....     6.23%    11.61%     4.60%    18.63%   (4.08%)    7.85%       6.17%      10.12%       6.83%         -- (e)
                    ========  ========  ========  ========  ========  ========   ========    ========    ========    ========
Total return
  based on
  market value(f)..    11.94%    10.76%     9.06%    13.87%   (8.12)%   (2.16)%      7.43%      12.55%       2.83%       2.29%(g)
                    ========  ========  ========  ========  ========  ========   ========    ========    ========    ========
Ratio of operating
  expenses to
  average
  net assets(h) ...     0.77%     0.83%     0.88%     1.08%     0.94%     0.87%      0.86%       0.87%       0.45%(b)      -- (c)
Ratio of net
  investment income
  to average net
  assets (h) ......     5.24%     5.63%     5.80%     6.08%     6.46%     7.08%      7.76%       8.11%       8.66%(b)    8.30%(c)(i)
Portfolio turnover
  rate ............       24%       21%       20%       37%       34%       35%        18%         15%         22%         32%(i)
Net assets at end
  of period (000).. $132,242  $131,503  $125,125  $127,118  $114,260  $127,213   $126,169    $127,589    $124,871    $126,856

</TABLE>


                                      -8-
<PAGE>   13
- ----------

(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%.

(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>   14

                                    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, whose interest 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, as amended (the "1940
Act"). 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 ____________________ (the "Underwriter") and
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, 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," the income on
which is subject to Federal income taxes.




                                      -10-



<PAGE>   15
                                 CAPITALIZATION
                                 AT MAY 31, 1999

         The following table sets forth the unaudited capitalization of the
Trust at May 31, 1999 and as adjusted to give effect to the issuance of the
shares of Series __ Municipal Preferred offered hereby.

<TABLE>
<CAPTION>
                                                                              ACTUAL           AS ADJUSTED
                                                                           ------------        -----------
<S>                                                                        <C>                    <C>
Shareholders' Equity:

     Preferred Shares, no par value per share; ______ shares
        authorized (no shares issued; _____ shares of Municipal
        Auction Rate Cumulative Preferred Shares issued,
        as adjusted, at $25,000 per share liquidation preference)........  $         --           $

     Common Shares, no par value per share; unlimited shares
        authorized; 11,509,000 shares outstanding*.......................   127,930,049               --


     Paid-in surplus.....................................................             0

     Undistributed net investment income.................................       (86,550)
     Net realized gain from investment transactions......................    (4,556,182)

     Net unrealized appreciation of investments..........................     6,070,100
                                                                           ------------           ------

        Net Assets.......................................................  $129,357,417           $
                                                                           ============           ======
</TABLE>


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


                              PORTFOLIO COMPOSITION

         As of May 31, 1999, approximately 99.4% of the market value of the
Trust's portfolio was invested in long and intermediate-term Municipal
Obligations and approximately 0.6% of the market value of the Trust's portfolio
was invested in short-term securities. The following table sets forth certain
information with respect to the composition of the Trust's investment portfolio
(excluding short-term investments) as of May 31, 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          55      $ 66,088,108.15     52.01%       Aaa         60      $ 67,852,463.85      53.41%
    AA            9        10,909,521.81      8.59         Aa         11        13,413,714.41      10.56
     A            9        12,974,456.25     10.21          A          4         6,811,861.45       5.36
    BBB          15        16,145,084.90     12.71        Baa          8        10,898,914.45       8.58
                                                           Ba          1           995,000.00       0.78
   NR**          31        20,935,372.32     16.48         NR**       35        27,080,589.27      21.31
- --------------------------------------------------------------------------------------------------------

   Total        119      $127,052,543.43    100.00%      Total       119      $127,052,543.43     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 $18,921,449, which
     represents 14.9% of the Trust.



                                      -11-

<PAGE>   16

                       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, whose interest is exempt from
Federal income tax (other than the possible incidence of any alternative minimum
tax) ("Municipal Obligations").

         Under normal circumstances, the Trust will invest primarily (at least
65% of its assets) in investment grade Municipal Obligations (bonds rated 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 (see
below) 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" in the Statement of Additional Information.

         It is a fundamental policy of the Trust, which may not be changed
without approval of the holders of a majority of the Trust's outstanding voting
securities (as defined under "Investment Objectives and Policies" in the
Statement of Additional Information), to invest, under normal circumstances, at
least 80% of its assets in Municipal Obligations. 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 investments objectives, may be changed
without shareholder approval.

         In addition to investing in Municipal Obligations, the Trust may engage
in transactions involving interest rate futures contracts ("financial futures"),
tax-exempt bond index futures and options on financial futures, tax-exempt bond
indices and index futures, as a hedge against changes in interest rates. See
"Investment Objectives and Policies--



                                      -12-
<PAGE>   17
Hedging Activities." The costs of and possible losses incurred from such
transactions will 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
certain limitations. See "Investment Objectives and Policies--Forward
Commitments," "Investment Objectives and Policies--Repurchase Agreements" and
"Investment Objectives and Policies--Temporary and Defensive Investments."

         The dollar-weighted average maturity of the tax-exempt bonds in the
Trust's portfolio may vary significantly from time to time, based on such
factors as the Advisor's expectations of interest rates, the maturity schedules
and possible prepayment of bonds held by the Trust and the characteristics and
maturities of tax-exempt bonds available in the market for purchase by the Trust
at various future times. The adjustment of the Trust's dollar-weighed average
maturity through the sale of portfolio holdings and the reinvestment of sale
proceeds in securities of different maturities may cause the Trust's portfolio
turnover rate to be higher than if the Trust had held its holdings until their
maturity. For a discussion of portfolio turnover rate, see "Portfolio Turnover"
under "Miscellaneous Investment Practices" in the Statement of Additional
Information.

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 applicability of any Federal alternative minimum tax). (For a
description of the Federal alternative minimum tax, see "Tax Matters--Federal
Taxation of Shareholders.") Therefore, for purposes of the Trust's policy to
invest, under normal circumstances, at least 80% of its assets in Municipal
Obligations, no bond or note will be considered to be "tax-exempt" unless the
bond or note was, at the time of issuance, accompanied by an opinion of bond
counsel to the issuer to the effect that the interest thereon was exempt from
Federal income tax (other than the possible applicability of any Federal
alternative minimum tax). 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. Other public purposes for which
Municipal Obligations may be issued include refunding outstanding obligations,
obtaining funds for general operating expenses and obtaining funds to lend to
other public institutions and facilities. In addition, categories of debt
obligations known as industrial development bonds and private activity bonds
have been or may be issued by or on behalf of public authorities to obtain funds
to provide certain privately-operated facilities, including housing facilities,
sports facilities, convention or trade show facilities, airport, mass transit,
port or parking facilities, air or water pollution control facilities and
certain local facilities for water supply, gas, electricity or sewage or solid
waste disposal. Such obligations are included within the term Municipal
Obligations if the interest paid thereon is exempt from Federal income tax
(other than the possible applicability of any alternative minimum tax). 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." 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 applicability of any Federal 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


                                      -13-



<PAGE>   18
bonds and private activity bonds generally are revenue bonds and thus not
payable from the unrestricted revenues of the issuer. The credit and quality of
industrial development bonds and private activity bonds are 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.

         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 legislators 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.

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.

         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 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 of futures contracts or call options thereon or the writing of put
options thereon by the Trust, an amount of cash and cash equivalents, 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.



                                      -14-
<PAGE>   19
         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 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



                                      -15-
<PAGE>   20

enters into financial futures on other than Municipal Obligations, which 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 Trust's investment 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 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



                                      -16-
<PAGE>   21

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 any 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;

         *        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


                                      -17-

<PAGE>   22
                  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 respecting 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 commitments" if it holds and maintains until
the settlement date, in a segregated account, cash or short-term debt
obligations in an amount sufficient to meet the purchase price provided such
obligations are rated A-1+ or SP-1+ by Standard & Poor's or the long-term debt
of the issuers of such obligations is rated AAA by Standard & Poor's. 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



                                      -18-
<PAGE>   23
         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 certain 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 certain 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 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."

                             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 (as defined below) with the Trust. There are 13
trustees of the Trust, two of whom are "interested persons" (as defined in the
1940 Act). 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



                                      -19-
<PAGE>   24

         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 subsidiaries of Liberty Mutual Insurance Company ("Liberty"), an
underwriter of workers' compensation insurance and a property and casualty
insurer in the U.S. 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 34 open-end and 5 closed-end management investment companies and
managed 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 Colonial 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 Colonial tax-exempt
funds 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 1940 Act, 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 1940 Act.

         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 ______ 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 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.

                                   THE AUCTION

GENERAL

         The proposed provisions of the Amended and Restated By-Laws of the
Trust (the "By-Laws") provide that, except as otherwise described herein, the
Applicable Rate with respect to shares of Municipal Preferred for each Rate



                                      -20-
<PAGE>   25
Period after the Initial Rate Period thereof 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."

         Certain defined terms used in this section and under "Description of
the Municipal Preferred" are defined in the Glossary.

AUCTION PROCEDURES

         Prior to the Submission Deadline on each Auction Date for shares of
Municipal Preferred, each 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 Municipal Preferred (a" Beneficial Owner") may submit orders
("Orders") to that Broker-Dealer as follows:

         *        Hold Order - indicating its desire to hold shares of Municipal
                  Preferred without regard to the Applicable Rate for the next
                  Rate Period.

         *        Bid - indicating its desire to sell shares of Municipal
                  Preferred at $25,000 per share if the Applicable Rate for the
                  next Rate Period is less than the rate specified in such Bid
                  (also known as a hold-at-a rate order).

         *        Sell Order - indicating its desire to sell shares of Municipal
                  Preferred at $25,000 per share without regard to the
                  Applicable Rate for the next Rate Period.

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 Beneficial Owner that submits a Bid to its Broker-Dealer having a rate
higher than the Maximum Rate on the Auction Date will be treated as having
submitted a Sell Order to its Broker-Dealer. A Beneficial Owner that fails to
submit an Order to its Broker-Dealer will be deemed to have submitted a Hold
Order to its Broker-Dealer; provided, however, that if a Beneficial Owner fails
to submit an Order to its Broker-Dealer for an Auction relating to a Rate Period
for Municipal Preferred of more than 28 Rate Period Days, such Beneficial Owner
will be deemed to have submitted a Sell Order to its Broker-Dealer. A Sell Order
shall constitute an irrevocable offer to sell the shares of Municipal Preferred
subject thereto. A Beneficial Owner that offers to become the Beneficial Owner
of additional shares of Municipal Preferred is, for purposes of such offer, a
Potential Beneficial Owner of additional shares of Municipal Preferred as
discussed below.

         A customer of a Broker-Dealer that is not a Beneficial Owner of shares
of Municipal Preferred but that wishes to purchase shares, or that is a
Beneficial Owner that wishes to purchase additional shares (in each case, a
"Potential Beneficial Owner"), may submit Bids to its Broker-Dealer in which it
offers to purchase shares of Municipal Preferred at $25,000 per share 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 specifying a rate higher
than the Maximum Rate on the Auction Date will not be accepted.

         The Broker-Dealers in turn 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 Potential Beneficial Owner. 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 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



                                      -21-
<PAGE>   26

in respect of shares of Municipal Preferred held by it. A Broker-Dealer may also
submit Orders to the Auction Agent for its own account as an Existing Holder or
Potential Holder, 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 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. See "The Auction--Broker-Dealers"
in the Statement of Additional Information.

         If Sufficient Clearing Bids exist (that is, the number of shares of
Municipal Preferred subject to Bids submitted or deemed submitted to the Auction
Agent by Broker-Dealers as or on behalf of Potential Holders with rates equal to
or lower than the Maximum Rate is at least equal to the number of shares of
Municipal Preferred subject to Sell Orders submitted or deemed submitted to the
Auction Agent by Broker-Dealers as or on behalf of Existing Holders), the
Applicable Rate for the next succeeding Rate Period will be the lowest rate
specified in the Submitted Bids which, taking into account such rate and all
lower rates bid by Brokers-Dealers as or on behalf of Existing Holders and
Potential Holders, would result in Existing Holders and Potential Holders owning
all the shares of Municipal Preferred available for purchase in the Auction. If
Sufficient Clearing Bids do not exist, the Applicable Rate for the next
succeeding Rate Period will be the Maximum Rate on the Auction Date. In such
event, Beneficial Owners that have submitted or are deemed to have submitted
Sell Orders may not be able to sell in such Auction all shares of Municipal
Preferred subject to such Sell Orders. If Broker-Dealers submit or are deemed to
have submitted to the Auction Agent Hold Orders with respect to all Existing
Holders, the Applicable Rate for the next succeeding Rate Period will be the All
Hold Order Rate.

         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. 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.

         Settlement of purchases and sales with respect to shares of Municipal
Preferred will be made on the next Business Day (also a Dividend Payment Date)
after the Auction Date through the Securities Depository. Purchasers will make
payment through their Agent Members in same-day funds to the Securities
Depository against delivery to their respective Agent Member. The Securities
Depository will make payment to the Sellers' Agent Members in accordance with
Securities Depository's 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 to the Statement of Additional Information.

         The first Auction for shares of Municipal Preferred will be held on
________, _________ __, 1999, the Business Day preceding the Dividend Payment
Date for the Initial Rate Period thereof. Thereafter, except during Special Rate
Periods, Auctions will normally be held every ________, and each Subsequent Rate
Period will normally begin on the following ________.

         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.



                                      -22-
<PAGE>   27
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 such Rate Period, the value of such shares may fluctuate
in response to the 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.

         A Beneficial Owner or an Existing Holder 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 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.

                        DETERMINATION OF NET ASSET VALUE

         Net asset value of the Trust will be determined as of the close of
regular trading on the New York Stock Exchange (the "Exchange") (generally 4:00
p.m. New York City 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.

                       DESCRIPTION OF MUNICIPAL PREFERRED

GENERAL

         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 ___ 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 __
shares of Series __ 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 "Certain Provisions in the Agreement and
Declaration of Trust," nonassessable, and will have no pre-emptive or conversion
rights or rights to cumulative voting.

DIVIDENDS AND DIVIDEND PERIODS

         General. The Initial Rate Period for shares of Municipal Preferred is a
period consisting of 7 days. Any Subsequent Rate Period will be a Minimum Rate
Period (7 Rate Period Days) unless the Trust, subject to certain


                                      -23-

<PAGE>   28
conditions, designates such Subsequent Rate Period as a Special Rate Period. See
"Designation of Special Rate Periods" below.

         Dividends on the shares of Municipal Preferred will be payable, 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 on
__________, _____________, 1999, and thereafter on each _______________;
provided, however, that (1) if the ________ on which dividends would otherwise
be payable is not a Business Day, then dividends shall be payable instead on the
first Business Day that falls prior to such _____________ and (2) the Trust may
specify different Dividend Payment Dates in respect of any Special Rate Period
of such shares of more than 28 Rate Period Days.

         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.

         Dividends will be paid through the Securities Depository on each
Dividend Payment Date in accordance with its normal procedures, which now
provide for it to distribute dividends in next-day funds to Agent Members, who
in turn are expected to distribute such dividend payments to the persons for
whom they are acting as agents. Each of the initial Broker-Dealers, however, has
indicated to the Trust that such Broker-Dealer or the Agent Member designated by
such Broker-Dealer will make such dividend payments available in same-day funds
on each Dividend Payment Date to customers that use such Broker-Dealer or its
designee as Agent Member.

         Dividends on shares of Municipal Preferred shall accumulate from the
Date of Original Issue. The dividend rate for the Initial Rate Period will be
_____% per annum. For each Subsequent Rate Period, the dividend rate will be the
Applicable Rate that the Auction Agent advises the Trust results from an
Auction, except as provided below.

         The Applicable Rate that results from an Auction will not be greater
than the Maximum Rate which is:

(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 of 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 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 or (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



                                      -24-

<PAGE>   29

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.

         If any Auction for any Subsequent Rate Period is not held for any
reason other than as described below, the dividend rate for such Subsequent Rate
Period will be the Maximum Rate on the Auction Date for such Subsequent Rate
Period.

         If the Trust fails to pay in a timely manner to the Auction Agent the
full amount of any dividend on, or the redemption price of, 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 such a failure occurred
that has not been cured), and, prior to 12:00 Noon on the third Business Day
next succeeding the date such failure occurred, such failure shall have been
cured and the Trust shall have paid a late charge, each as described more fully
in the Statement of Additional Information, no Auction will be held for the
Subsequent Rate Period thereof and the dividend rate for shares of Municipal
Preferred for such Subsequent Rate Period will be the Maximum Rate on the
Auction Date for such Subsequent Rate Period.

         If the Trust fails to pay in a timely manner to the Auction Agent the
full amount of any dividend on, or the redemption price of, any shares of
Municipal Preferred 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 such a failure occurred
that has not been cured), and, prior to 12:00 Noon on the third Business Day
next succeeding the date on which such failure occurred, such failure shall not
have been cured or the Trust shall not have paid a late charge, each as
described more fully in the Statement of Additional Information, no Auction will
be held in respect of such shares for the first Subsequent Rate Period thereof
thereafter (or for any Rate Period thereof thereafter to and including the Rate
Period during which such failure is so cured and such late charge so paid (such
late charge to be paid only in the event Moody's is rating such shares at the
time the Trust cures such failure)), and the dividend rate for such shares for
each such Subsequent Rate Period shall be a rate per annum equal to the Maximum
Rate on the Auction Date for each 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-").

         If the Trust fails to pay in a timely manner to 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 such a failure occurred that has not been
cured, and such failure shall not have been cured or, in the event Moody's is
then rating such shares, the Trust shall not have paid a late charge, in each
case prior to 12:00 Noon on the fourth Business Day preceding the Auction Date
for the Rate Period subsequent to such Rate Period and as more fully described
in the Statement of Additional Information, no Auction will be held for such
Subsequent Rate Period thereof (or for any Rate Period thereof thereafter to and
including the Rate Period during which such failure is so cured and such late
charge is so paid (such late charge to be paid only in the event that Moody's is
rating the shares at the time and the Trust cures such failure)), and the
dividend rate for each such Subsequent Rate Period shall be a rate per annum
equal to the Maximum Rate on the Auction Date for each 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-").

         A failure to pay dividends on or the redemption price of shares of
Municipal Preferred shall have been cured with respect to any Rate Period if,
within the respective time periods described 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 by the Trust; 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.


                                      -25-
<PAGE>   30
         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 ByLaws
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 Securities Depository)
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.

         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. For so long as any
shares of Municipal Preferred are outstanding, 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) 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) 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;
(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 (3) immediately after such transaction the Discounted Value of the
Trust's portfolio would at least equal the Municipal Preferred Basic Maintenance
Amount in accordance with guidelines of the rating agency or agencies then
rating the shares of Municipal Preferred.



                                      -26-
<PAGE>   31
         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.

DESIGNATION OF SPECIAL RATE PERIODS

         The Trust, at its option, may designate any succeeding Subsequent Rate
Period 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 certain adjustments. A designation of a Special Rate Period shall be
effective only if, among other things, (i) the Trust shall give certain notices
to the Auction Agent, (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, the redemption price with
respect to such shares shall have been deposited with the Auction Agent.

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 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 first 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,
after giving effect thereto, the aggregate liquidation preference of all
Preferred Shares then outstanding,



                                      -27-
<PAGE>   32

exclusive of accumulated and unpaid dividends, would not exceed $__________;
provided, however, that the Trust obtains written confirmation from Moody's (if
Moody's is then rating the shares 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. Further, 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 notwithstanding that, after giving
effect thereto, the aggregate liquidation preference of all Preferred Shares
then outstanding would exceed $__________; provided, however, that either
Moody's or Standard & Poor's is rating the shares of Municipal Preferred and 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. 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).

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 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



                                      -28-
<PAGE>   33
         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.

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 preferential amounts provided for a
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) certain 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 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) ("1940 Act Municipal
Preferred Asset Coverage"). Based on the composition of the Trust's portfolio
and market conditions as of _____________, 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 $________, would be computed as follows:



                                      -29-
<PAGE>   34

          Value of Trust assets less liabilities
          not constituting senior securities           $__________
          --------------------------------------    =   ----------   = ______ %
          Senior securities representing               $__________
          indebtedness plus liquidation value
          of the shares of Municipal Preferred

         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, 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 certain 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. Although the
Trust's Common Shares recently have been trading at a premium above net asset
value, there can be no assurance that this premium will continue after the
offering of the shares of Municipal Preferred or that the Common Shares will not
again trade at a discount. Shares of other closed-end investment companies
frequently trade at a discount from net asset value.



                                      -30-
<PAGE>   35
          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 1940 Act.

         Reference should be made to the Declaration on file with the Commission
for the full text of these provisions.

            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 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 1940 Act and the
other limitations described under "Rating Agency Guidelines." Shares may not be
repurchased, however, (i) if applicable asset coverage requirements under the
1940 Act (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 1940 Act. 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 1940 Act) 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



                                      -31-
<PAGE>   36
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 Exchange. No
assurance can be given that the Board will, at any time in the future, decide to
submit a proposal to convert to open-end status to the shareholders of the
Trust.

                                   TAX MATTERS

         The following Federal tax discussion is based on the advice of Ropes &
Gray, counsel to the Trust, and reflects provisions of the 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 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 certain
special Federal tax rules. 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 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 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 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



                                      -32-
<PAGE>   37
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 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.

         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
the 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. 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. Conversely, 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 may therefore be treated as a taxable dividend (even though that
portion economically represents a return of the Trust's capital).

         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 among the holders of the Common Shares, the 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 among 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.


                                      -33-
<PAGE>   38
         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 (see "Description of
Municipal Preferred--Dividends--Gross-up Payments") payable under the
circumstances described in this Prospectus). 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--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. The Trust believes 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.

         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 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 certain 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 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.



                                      -34-
<PAGE>   39

         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 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 4 Chase MetroTech Center, Brooklyn, New York
11245, as custodian (the "Custodian") under a custodian contract.

         State Street Bank and Trust Company, whose principal business address
is 225 Franklin 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 shares.

                                  UNDERWRITING

         Subject to the terms and conditions of the Underwriting Agreement
between ________________ (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 ___ shares of Series __ 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, as amended, 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 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 Underwriters.

         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 Broker-Dealers as set forth under "The Auction--General" and will
receive the fees described under "The Auction--Broker-Dealers" 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 [Underwriter] is ___________,
_________, ___ __________.

                                 LEGAL OPINIONS

         Certain legal matters in connection with the Series ___ Municipal
Preferred offered hereby will be passed upon for the Trust by Ropes & Gray,
Boston, Massachusetts, and for the Underwriters by ___________, ___________,
___________.




                                      -35-
<PAGE>   40
                             REPORTS TO SHAREHOLDERS

         The Trust will send unaudited semiannual and audited annual reports to
its shareholders, including a list of investments held.

                                     EXPERTS

         The Financial Statements included in the Statement of Additional
Information have been so included in the 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, as amended, and the 1940 Act, 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 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 Exchange, 20 Broad
Street, New York, New York 10005.



                                      -36-



<PAGE>   41
                                    GLOSSARY

         "'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 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 certain commercial paper dealers to the Auction Agent for the
close of business on the Business Day next preceding such date.

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

         "All Hold Order Rate," with respect to a Rate Period for which an
Auction is held, means the lesser of the Kenny Index (if the Rate Period for
which the Auction is held 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 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 Fund has notified the
Auction Agent of its intent to allocate to shares of Municipal Preferred in such
Rate Period any net capital gains or other income taxable for Federal income tax
purposes ("Taxable Income"), the Applicable Rate on 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 rate 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.

         "Applicable Rate" means the rate per annum at which dividends are
payable on shares of Municipal Preferred for any Rate Period thereof.



                                      -37-



<PAGE>   42
         "Auction Agency Agreement" means an agreement between the Fund 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 Municipal Preferred so long as the Applicable Rate for such shares
is to be based on the results of an Auction.

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

         "Bidder" means a Beneficial Owner or a Potential Beneficial Owner
placing an Order with its Broker- Dealer or an Existing Holder or Potential
Holder placing an order with the Auction Agent or on whose behalf an Order is
placed with an Auction Agent.

         "Board of Trustees" 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.

         "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 Auction Procedures.

         "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.

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

         "Date of Original Issue" means the date on which the Trust initially
issued shares of Municipal Preferred.

         "Dividend Payment Date" means any date on which dividends on shares of
Municipal Preferred are payable as provided under "Description of Municipal
Preferred--Dividends and Dividend Periods."

         "Dividend Period" means the period from and including the Date of
Original Issue of shares of Municipal Preferred 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.

         "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 shares of Municipal Preferred.

         "Initial Rate Period" means the period from and including the Date of
Original Issue of shares of Municipal Preferred to but excluding _________ __,
1999.

         "Kenny Index" has the meaning specified under "Taxable Equivalent of
the Short-Term Municipal Bond Rate."

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

         "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 shares of
Municipal Preferred or that is an Existing Holder of such shares that wishes to
become the Existing Holder of additional shares.



                                      -38-



<PAGE>   43
         "Rate Multiple" means 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 the relevant Auction Date:

          PREVAILING RATING                                         PERCENTAGE

          "aa3"/AA- or higher...........................................110%
          "a3"/A-.......................................................125%
          "baa3"/BBB-...................................................150%
          "ba3"/BB-.....................................................200%
          Below "ba3"/BB-...............................................250%

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 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.
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
the shares of Municipal Preferred are rated by only one rating agency, such
rating will be the prevailing rating.

         "Rate Period" means the Initial Rate Period of shares of Municipal
Preferred and any Subsequent Rate Period of such shares.

         "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
either (i) the shortening or lengthening, as the case may be, of such Rate
Period or Dividend Period as set forth under "Description of Municipal
Preferred--Dividends and Dividend Periods" because the day on which dividends
would otherwise be payable is not a Business Day or (ii) the shortening of such
Rate Period pursuant to the provisions relating to the designation of Special
Rate Periods as set forth in the Statement of Additional Information under
"Description of Municipal Preferred--Dividends-- Designation of Special Rate
Periods."

         "Reference Rate" means (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.

         "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.

         "Special Rate Period" means any Subsequent Rate Period commencing on
the date designated by the Trust, as set forth under "Description of Municipal
Preferred--Designation of Special Rate Periods," and ending on the last day of
the last Dividend Period thereof.

         "Submission Deadline" means 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.

         "Submitted Bid" means a valid Bid submitted or deemed submitted to the
Auction Agent by a Broker- Dealer by the Submission Deadline.



                                      -39-



<PAGE>   44
         "Submitted Hold Order" means a valid Hold Order submitted or deemed
submitted to the Auction Agent by a Broker-Dealer by the Submission Deadline.

         "Subsequent Rate Period" means any period from and including the first
day following the Initial Rate Period of shares of Municipal Preferred 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.

         "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, means 90% of the quotient of (A) the per annum rate expressed on an
interest equivalent basis equal to the Kenny S&P 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., New
York City time, on such date by Kenny S&P 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 Kenny S&P 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 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),
whichever is greater; 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 Kenny S&P 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 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), whichever is greater.

         "Treasury Bill" means 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, 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 certain U.S. government
securities dealers to the Auction Agent.

         "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.

         "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


                                      -40-



<PAGE>   45
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 certain U.S. government securities dealers to
the Auction Agent.


            TABLE OF CONTENTS OF STATEMENT OF ADDITIONAL INFORMATION

                                                                           PAGE

Use of Proceeds.........................................................    B-2
Investment Objectives and Policies......................................    B-2
Trust Charges and Expenses..............................................    B-4
Management of the Trust.................................................    B-4
Portfolio Transactions..................................................   B-10
Net Asset Value.........................................................   B-11
The Auction.............................................................   B-11
Description of Municipal Preferred......................................   B-23
Repurchase of Common Shares.............................................   B-39
Miscellaneous Investment Practices......................................   B-40
Tax Matters.............................................................   B-49
Shareholder Liability...................................................   B-52
Custodian...............................................................   B-52
Independent Accountants.................................................   B-52
Report of Independent Accountants.......................................   B-53
Financial Statements....................................................   B-54
Glossary................................................................   B-80
Appendix A--Ratings of Investments......................................   B-86
Appendix B--Auction Procedures..........................................   B-91
Appendix C--Settlement Procedures.......................................  B-100



                                      -41-



<PAGE>   46

================================================================================


                                 $______________


                            COLONIAL INVESTMENT GRADE
                                 MUNICIPAL TRUST


               MUNICIPAL AUCTION RATE CUMULATIVE PREFERRED SHARES

                         __________ SHARES, SERIES _____



                                   ----------



                                   PROSPECTUS



                             ________________, 1999




                                   ----------





================================================================================


                                      -42-



<PAGE>   47

                   SUBJECT TO COMPLETION, DATED _______, 1999

         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.


                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST

                       STATEMENT OF ADDITIONAL INFORMATION

         This Statement of Additional Information ("SAI") relating to the
Series__ 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

USE OF PROCEEDS..........................................................   B-2
INVESTMENT OBJECTIVES AND POLICIES.......................................   B-2
TRUST CHARGES AND EXPENSES...............................................   B-4
MANAGEMENT OF THE TRUST..................................................   B-4
PORTFOLIO TRANSACTIONS...................................................  B-10
NET ASSET VALUE..........................................................  B-11
THE AUCTION..............................................................  B-11
DESCRIPTION OF MUNICIPAL PREFERRED.......................................  B-23
REPURCHASE OF COMMON SHARES..............................................  B-39
MISCELLANEOUS INVESTMENT PRACTICES.......................................  B-40
TAX MATTERS..............................................................  B-49
SHAREHOLDER LIABILITY....................................................  B-52
CUSTODIAN................................................................  B-52
INDEPENDENT ACCOUNTANTS..................................................  B-52
REPORT OF INDEPENDENT ACCOUNTANTS........................................  B-53
FINANCIAL STATEMENTS.....................................................  B-54
GLOSSARY.................................................................  B-80
APPENDIX A--Ratings of Investments.......................................  B-86
APPENDIX B--Auction Procedures...........................................  B-91
APPENDIX C--Settlement Procedures........................................ B-100



<PAGE>   48

                                 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 (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 objective 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.

         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 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; and



                                       B-2



<PAGE>   49

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

         For the purpose of applying the limitation set forth above in
subparagraph (1), 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.

         For the purpose of applying the limitation set forth above in
subparagraph (6), the Trust will treat each state and each separate political
subdivision, agency, authority or 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.

         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 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)      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

         (4)      invest in interests in oil, gas or other mineral exploration
                  or development programs, including leases.

         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 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



                                      B-3

<PAGE>   50

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 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) (dollars in thousands)

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

BROKERAGE COMMISSIONS

         For the years ended December 31, 1996, 1997, and 1998, the Trust did
not pay any brokerage commissions on securities transactions.

                             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.

NAME (AGE)                    POSITIONS AND          PRINCIPAL OCCUPATIONS
AND ADDRESS               OFFICES WITH TRUST         DURING PAST FIVE YEARS
- -----------               ------------------         ----------------------

Robert J. Birnbaum (71)       Trustee             Consultant (formerly Special
313 Bedford Road                                  Counsel, Dechert Price &
Ridgewood, NJ 07450                               Rhoads (law firm) from
                                                  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 (68)            Trustee             Retired (formerly Chairman of
11 Carriage Way                                   the Board and Chief Executive
Danvers, MA 01923                                 Officer, Shore Bank & Trust
                                                  Company from 1992 to 1993);
                                                  Director of The Empire
                                                  Company since June, 1995.

John V. Carberry* (51)        Trustee             Senior Vice President of
56 Woodcliff Road                                 Liberty Financial Companies,
Wellesley Hills, MA 02481                         Inc. (formerly Managing
                                                  Director, Salomon Brothers
                                                  (investment banking) from
                                                  January, 1988 to January,
                                                  1998).



                               B-4
<PAGE>   51
Lora S. Collins (63)          Trustee             Attorney (formerly Attorney,
1175 Hill Road                                    Kramer, Levin, Naftalis &
Southold, NY 11971                                Frankel (law firm) from
                                                  September, 1986 to November,
                                                  1996).

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

Richard W. Lowry (62)         Trustee             Private Investor since
10701 Charleston Drive                            August, 1987.
Vero Beach, FL 32963

Salvatore Macera (67)         Trustee             Private Investor (formerly
26 Little Neck Lane                               Executive Vice President of
New Seabury, MA 02649                             Itek Optical & Electronic
                                                  Industries, Inc.
                                                  (electronics) from ____ to
                                                  ____).

William E. Mayer* (58)        Trustee             Partner, Development Capital,
500 Park Avenue, 5th Floor                        LLC (venture capital)
New York, NY 10022                                (formerly Dean, 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
16 Running Tide Road                              the Board, Hannaford Bros.
Cape Elizabeth, ME 04107                          Co. (food retailer) from May,
                                                  1984 to May, 1997, and Chief
                                                  Executive Officer, Hannaford
                                                  Bros. Co. from May, 1973 to
                                                  May, 1992).

John J. Neuhauser (55)        Trustee             Dean, Boston College School
140 Commonwealth Avenue                           of Management since
Chestnut Hill, MA 02167                           September, 1977.

Thomas E. Stitzel (58)        Trustee             Professor of Finance, College
2208 Tawny Woods                                  of Business, Boise State
Place Boise, ID 83706                             University (higher
                                                  education); Business
                                                  consultant and author.

Robert L. Sullivan (70)       Trustee             Retired (formerly Partner,
45 Sankaty Avenue                                 KPMG Peat Marwick LLP, from
Siasconset, MA 02564                              ____ to ____).

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



                               B-5
<PAGE>   52
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; Director of the Advisor
                                                   since 1996 (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         Officer Controller and Chief
                            Chief Accounting       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.

Timothy J. Jacoby  (45)  Treasurer and Chief       Treasurer and Chief Financial
                         Financial Officer         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; Assistant Treasurer to
                                                   the Fidelity Group of Trusts
                                                   from August, 1990 to
                                                   September, 1993).


                               B-6
<PAGE>   53
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); (formerly Partner,
                                          Mintz, Levin, Cohn, Ferris, Glovsky
                                          and Popeo (law firm) from June, 1990
                                          to June, 1994).

* Denotes those Trustees who are "interested persons" (as defined in the
Investment Company Act of 1940, as amended (the "1940 Act")) of the Trust or the
Advisor. 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.

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 High Income Municipal
Trust, Colonial Investment Grade 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."

         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):


                                      B-7

<PAGE>   54


<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)                              $1,254                             $ 99,429
Tom Bleasdale (c)                                    1,450(d)                          115,000(e)
John V. Carberry (f) (g)                               N/A                                  N/A
Lora S. Collins (c)                                  1,228                               97,429
James E. Grinnell (c)                                1,300                              103,071
William D. Ireland, Jr. (h)                            550                               35,333
Richard W. Lowry (c)                                 1,237                               98,214
Salvatore Macera (i)                                     0                               25,250
William E. Mayer (c)                                 1,258                               99,286
James L. Moody, Jr. (c)                              1,334(j)                           105,857(k)
John J. Neuhauser (c)                                1,329                              105,323
George L. Shinn (h)                                    499                               31,334
Thomas E. Stitzel (i)                                    0                               25,250
Robert L. Sullivan (c)                               1,333                              104,100
Anne-Lee Verville (c) (f)                            1,021(l)                             23,44(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 $661 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").

(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 $1,334 for the fiscal year ended December 31, 1998,
     will be payable in later years as deferred compensation.

(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 $1,021 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):



                                       B-8
<PAGE>   55
<TABLE>
<CAPTION>
                                              Total Compensation from the
                                              Liberty All-Star Funds for
Trustee                                Calendar Year 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 _________ ___, 1999, the Trust's officers and Trustees as a group
owned less than 1% of the outstanding Common Shares.

         At _________, 1999, ______________________, [Address], owned of record
_________ shares, representing ____%, 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 51 open-end and 5 closed-end management investment company
portfolios. Trustees and 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 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



                                      B-9
<PAGE>   56
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: 0.033% on the next $950 million; 0.016% on the
next $1 billion; 0.010% on the next $1 billion; and 0.007% 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.

                             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



                                      B-10
<PAGE>   57

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 as of the close of
regular trading on the New York Stock Exchange (the "Exchange") (generally 4:00
p.m. New York City 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.

         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. The pricing service values portfolio
securities at the mean between the quoted bid and asked price or the yield
equivalent when quotations are readily available. 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.

                                   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.



                                      B-11
<PAGE>   58

         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 ______________________________ (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 agreements with
Salomon Smith Barney Inc. and ____________________, and may enter into 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.



                                      B-12
<PAGE>   59
AUCTION DATES; ADVANCE NOTICE OF ALLOCATION OF TAXABLE INCOME

         The first Auction for shares of Series __ Municipal Preferred will be
held on ________, __________, 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 ________, and each Subsequent Rate Period will normally
begin on the following _______, 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.

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."


                                      B-13
<PAGE>   60
         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 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



                                      B-14
<PAGE>   61

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 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 Kenny S&P 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., New York City time, on such date by Kenny S&P 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 Kenny S&P
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 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),
whichever is greater; 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 Kenny S&P Evaluation
Services or any successor, the Taxable Equivalent


                                      B-15
<PAGE>   62
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 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), whichever is greater.

         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 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 ______________________ or, in lieu of
any thereof, their respective affiliates or successors, if such entity is a
commercial paper dealer. As used herein, "Substitute Commercial Paper Dealer"
means _____________________ 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-16
<PAGE>   63
         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
____________________ 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 ___________________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:

         Prevailing Rating                                Percentage
         -----------------                                ----------

         "aa3"/AA- or higher.............................      110%
         "a3"/A-.........................................      125%
         "baa3"/BBB-.....................................      150%
         "ba3"/BB-.......................................      200%
         Below "ba3"/BB-.................................      250%

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 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.
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 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



                                      B-17
<PAGE>   64
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, _______________________ 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., New York City 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;

                           (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



                                      B-18
<PAGE>   65
                  (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 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,


                                      B-19
<PAGE>   66

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 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):


                                      B-20
<PAGE>   67

                  (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., New York
City 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.

         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.

                                      B-21
<PAGE>   68

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., New York City 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 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



                                      B-22
<PAGE>   69

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
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. 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 ________, ________ __, 1999, and thereafter on each ______;
provided, however, that (1) if the ________ on which dividends would 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 prior to such _________ 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.


                                      B-23
<PAGE>   70
         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
________, would be the following ________ 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, 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 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 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, 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 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


                                      B-24
<PAGE>   71
         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, New York City 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, 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 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 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, New York City 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 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 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 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.



                                      B-25
<PAGE>   72
         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.

         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 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").



                                      B-26
<PAGE>   73

         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
_______ 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 ________ that is followed by a ________ 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 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., 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.



                                      B-27
<PAGE>   74

         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 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
         Action, (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., 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 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.

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




                                      B-28
<PAGE>   75

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.

         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 (i) 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,
         after giving effect thereto, the aggregate liquidation preference of
         all Preferred Shares then outstanding, exclusive of accumulated and
         unpaid dividends, would not exceed $__________; provided, however, that
         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, and (ii) so long as either at least
         one of Moody's or Standard & Poor's is rating the shares of Municipal
         Preferred, 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 the 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 notwithstanding
         that, after giving effect thereto, the aggregate liquidation preference
         of all Preferred Shares then outstanding would exceed $__________;
         provided, however, that 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) or

                  (b)      amend, alter or repeal the provisions of the
         Declaration or the By-Laws, whether by merger, consolidation or
         otherwise, so as to 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 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 662/3% 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).


                                      B-29
<PAGE>   76

         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.

         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) engage
in futures or options transactions, except in accordance with the then-current
guidelines of such rating agencies, (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 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 _________) referred to in the
definition of Market Value, 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


                                      B-30
<PAGE>   77
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 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
seventh 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 any redemption premium applicable to shares of Municipal Preferred
         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;

                           (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



                                      B-31
<PAGE>   78
                           (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.

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



                                      B-32
<PAGE>   79

("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
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
- ----------------                                 ---       --        -       ---     -------
<C>                                              <C>       <C>      <C>      <C>       <C>

45 Business Days..............................   190%      195%     210%     250%      220%
22 Business Days..............................   170       175      190      230       220
10 Business Days..............................   155       160      175      215       220
7 Business Days...............................   150       155      170      210       220
3 Business Days...............................   130       135      150      190       220

</TABLE>

         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, 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 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 Moody's. 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:

                  (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, 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; and



                                      B-33
<PAGE>   80
                           (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.

                  (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
         fair market value of such Municipal Obligations does not exceed 10% of
         the aggregate fair 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 fair market value of such Municipal
         Obligations exceeds 5% of the aggregate fair market value of Standard &
         Poor's Eligible Assets.

                  (3)      Municipal Obligations rated by another nationally
         recognized credit rating agency but not rated by Standard & Poor's will
         be considered Standard & Poor's Eligible Assets only to the extent the
         fair market value of such Municipal Obligations does not exceed 50% of
         the aggregate fair 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
         fair market value of such Municipal Obligations does not exceed 20% of
         the aggregate fair market value of Standard & Poor's Eligible Assets.

         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 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 for bonds with 10 years to maturity 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*****
- ---------------               ----      ---      --       ---     -------    ----------    ---------     ------------
<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 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 by Moody's or Standard & Poor's.



                                      B-34
<PAGE>   81
         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).

         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

</TABLE>

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

         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 pay
interest in cash, be publicly rated Baa or higher by Moody's or, if not rated by
Moody's but rated by Standard & Poor's, that they be rated at least BBB by
Standard & Poor's, and that they not have suspended ratings. 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.

         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
the then-current guidelines of such ratings agencies, and 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.

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


                                      B-35
<PAGE>   82

         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; (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
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



                                      B-36
<PAGE>   83
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 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 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 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


                                      B-37
<PAGE>   84

"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 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 preferential 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.


                                      B-38
<PAGE>   85

         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
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-39

<PAGE>   86

                       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
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


                                      B-40
<PAGE>   87
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.

         Zero-coupon bonds are issued at a significant discount from their
principal amount in lieu of paying interest periodically. Payment-in-kind bonds
allow the issuer, at its option, to make current interest payments on the bonds
either in cash or in additional bonds. Because zero coupon and payment-in-kind
bonds do not pay current interest in cash, their value is subject to greater
fluctuation in response to changes in market interest rates than bonds that pay
interest currently. Both zero coupon and payment-in-kind bonds allow an issuer
to avoid the need to generate cash to meet current interest payments.
Accordingly, such bonds may involve greater credit risks than bonds paying
interest currently in cash. The Trust is required to accrue interest income on
such investments and to distribute such amounts at least annually to
shareholders even though such bonds do not pay current interest in cash. Thus,
it may be necessary at times for the Trust to liquidate investments in order to
satisfy its dividend distribution requirements.

         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, are 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 short-term tax-exempt rate. The
Advisor will consider on an ongoing basis the creditworthiness of the




                                      B-41
<PAGE>   88
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.

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


                                      B-42
<PAGE>   89
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. 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.



                                      B-43
<PAGE>   90
         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.

         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.



                                      B-44
<PAGE>   91

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 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




                                      B-45
<PAGE>   92
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.

         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.



                                      B-46
<PAGE>   93
         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 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



                                      B-47
<PAGE>   94

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 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-48
<PAGE>   95

                                   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) 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
Fund's assets must consist of cash and cash items, 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 interment companies), or in two or more issuers
which the Trust controls and which are engaged in the same or similar 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 equal to 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). The balance of such income must be
distributed during the next calendar 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.

         If the Trust does not qualify for taxation as a regulated investment
company for any taxable year, the Trust's income will be taxed 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 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 a 4% Federal excise tax (imposed on regulated investment companies that fail
to distribute for a given calendar year substantially all of their taxable net
investment income for such year and substantially all of their capital gain net
income for the one-year period ending October 31 of such year) 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."



                                      B-49
<PAGE>   96
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.

         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



                                      B-50
<PAGE>   97

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 generally be effective for
payments made after December 31, 1999 (although transition rules will apply). 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.


                                      B-51
<PAGE>   98

                              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 10017-0270, 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-52
<PAGE>   99
                        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





                                      B-53



<PAGE>   100
                              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>


                                      B-54
<PAGE>   101
<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>


                                      B-55
<PAGE>   102
    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,


                                      B-56
<PAGE>   103
    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
                                                                      --------


                                      B-57
<PAGE>   104
 ..............................................................................
 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,


                                      B-58
<PAGE>   105
                           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


                                      B-59
<PAGE>   106
    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,


                                      B-60
<PAGE>   107
                           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


                                      B-61
<PAGE>   108
   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


                                      B-62
<PAGE>   109
   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,


                                      B-63
<PAGE>   110
    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
                                                                      --------


                                      B-64
<PAGE>   111
   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,


                                      B-65
<PAGE>   112
                           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
                                                                      --------


                                      B-66
<PAGE>   113
                                                                         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
                                                                      --------


                                      B-67
<PAGE>   114
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>


                                      B-68
<PAGE>   115
<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>


                                      B-69
<PAGE>   116
<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>


                                      B-70
<PAGE>   117
<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>


                                      B-71
<PAGE>   118
<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


                                      B-72
<PAGE>   119
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.


                                      B-73
<PAGE>   120
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


                                      B-74
<PAGE>   121
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>


                                      B-75
<PAGE>   122
<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


                                      B-76
<PAGE>   123
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>


                                      B-77
<PAGE>   124
<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


                                      B-78
<PAGE>   125
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.


                                      B-79
<PAGE>   126
                                    GLOSSARY

         "'AA' Composite Commercial Paper Rate" has the meaning set forth on
page B-16 of this Statement of Additional Information.

         "Advisor" means Colonial Management Associates, Inc.

         "Affected Series" has the meaning set forth on page B-29 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 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 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 the following obligations: 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) that are rated by Standard & Poor's.

         "Applicable Rate" has the meaning set forth on page B-12 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-12 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-19
of this Statement of Additional Information.

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

         "Beneficial Owner" has the meaning set forth on page B-12 of this
Statement of Additional Information.

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

         "Bidder" and "Bidders" have the respective meanings set forth on page
B-13 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-80
<PAGE>   127
         "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-12 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 State 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-45 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-16 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-12 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
State of the Commonwealth of Massachusetts.

         "Deposit Securities" has the meaning set forth on page B-36 of this
Statement of Additional Information.

         "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-12 of this
Statement of Additional Information.

         "Dividend Period" has the meaning set forth on page B-12 of this
Statement of Additional Information.

         "DTC" has the meaning set forth on page B-12 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 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.



                                      B-81
<PAGE>   128
         "Exchange" has the meaning set forth on page B-39 of this Statement of
Additional Information.

         "Existing Holder" has the meaning set forth on page B-12 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, New York City 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-26 of this
Statement of Additional Information.

         "Hold Order" has the meaning set forth on page B-13 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 Rate Period" has the meaning set forth on page B-12 of this
Statement of Additional Information.

         "IRS" means the Internal Revenue Service.

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

         "Late Charge" has the meaning set forth on page B-24 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.

         "Maximum Potential Gross-up Payment Liability" has the meaning set
forth on page B-33 of this Statement of Additional Information.

         "Maximum Rate" has the meaning set forth on page B-15 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.

         "Moody's Discount Factors" has the meaning set forth on page B-35 of
this Statement of Additional Information.

         "Moody's Eligible Assets" has the meaning set forth on page B-35 of
this Statement of Additional Information.

         "Moody's Exposure Period" has the meaning set forth on page B-35 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



                                      B-82
<PAGE>   129
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                                             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 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 pages B-31 to B-32 of this Statement of Additional Information.

         "Municipal Preferred Basic Maintenance Cure Date" has the meaning set
forth on page B-31 of this Statement of Additional Information.

         "Municipal Preferred Basic Maintenance Report" has the meaning set
forth on page B-32 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 page B-31 of this
Statement of Additional Information.

         "1940 Act Municipal Preferred Asset Coverage" has the meaning set forth
on page B-31 of this Statement of Additional Information.

         "Notice of Redemption" has the meaning set forth on page B-37 of this
Statement of Additional Information.

         "Notice of Special Rate Period" has the meaning set forth on page B-28
of this Statement of Additional Information.

         "Order" and "Orders" have the respective meanings set forth on page
B-13 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.


                                      B-83
<PAGE>   130

         "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-12 of
this Statement of Additional Information.

         "Potential Holder" has the meaning set forth on page B-12 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-17 of this
Statement of Additional Information.

         "Rate Period" has the meaning set forth on page B-12 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."

         "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 page B-35 and B-33 of this Statement
of Additional Information, respectively.

         "Redemption Price" has the meaning set forth on page B-36 of this
Statement of Additional Information.

         "Reference Rate" has the meaning set forth on page B-15 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-13 of this Statement
of Additional Information.

         "Special Rate Period" has the meaning set forth on page B-12 of this
Statement of Additional Information.

         "Special Redemption Provisions" has the meaning set forth on page B-36
of this Statement of Additional Information.

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

         "Standard & Poor's Discount Factors" has the meaning set forth on pages
B-32 to B-33 of this Statement of Additional Information.

         "Standard & Poor's Eligible Assets" has the meaning set forth on page
B-32 of this Statement of Additional Information.

         "Standard & Poor's Exposure Period" has the meaning set forth on page
B-33 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.



                                      B-84
<PAGE>   131

         "Submission Deadline" means 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.

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

         "Submitted Hold Order" has the meaning set forth on page B-19 of this
Statement of Additional Information.

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

         "Submitted Sell Order" has the meaning set forth on page B-19 of this
Statement of Additional Information.

         "Subsequent Rate Period" has the meaning set forth on page B-12 of this
Statement of Additional Information.

         "Substitute Commercial Paper Dealer" has the meaning set forth on page
B-16 of this Statement of Additional Information.

         "Substitute U.S. Government Securities Dealer" has the meaning set
forth on page B-17 of this Statement of Additional Information.

         "Sufficient Clearing Bids" has the meaning set forth on page B-19 of
this Statement of Additional Information.

         "Taxable Allocation" has the meaning set forth on page B-26 of this
Statement of Additional Information.

         "Taxable Equivalent of the Short-Term Municipal Bond Rate" has the
meaning set forth on pages B-15 to B-16 of this Statement of Additional
Information.

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

         "Taxable Yield Rate" has the meaning set forth on page B-20 of this
Statement of Additional Information.

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

         "Treasury Bill Rate" has the meaning set forth on page B-16 of this
Statement of Additional Information.

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

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

         "Valuation Date" has the meaning set forth on page B-31 of this
Statement of Additional Information.

         "Volatility Factor" means, as of any Valuation Date, the greater of the
Moody's Volatility Factor and the Standard & Poor's Volatility Factor.

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




                                      B-85



<PAGE>   132
                                   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

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.

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.


                                      B-86

<PAGE>   133

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.

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.

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.

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.

L        The letter "L" indicates that the rating pertains to the principal
         amount of those bonds to the extent that the underlying deposit
         collateral is federally insured and interest is adequately
         collateralized.* In the case of certificates of deposit the letter 'L'
         indicates that the deposit, combined with other deposits being held in
         the same right and capacity, will be honored for principal and accrued
         pre-default interest up to the federal insurance limits within 30 days
         after closing of the insured institution or, in the event that the
         deposit is assumed by a successor insured institution, upon maturity.

*        Continuance of the rating is contingent upon S&P's receipt of an
         executed copy of the escrow agreement or closing documentation
         confirming investments and cash flow.



                                      B-87
<PAGE>   134

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.

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:

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.

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:

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.



                                      B-88
<PAGE>   135
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.

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.

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

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



                                      B-89
<PAGE>   136

         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.

SHORT-TERM LOANS

MIG1/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.

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.


                                      B-90



<PAGE>   137
                                   APPENDIX B

                               AUCTION PROCEDURES

         The following procedures will be set forth as Section 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 Glossary or in the Prospectus or this
Statement of Additional Information.

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
paragraph (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 paragraph (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 paragraph (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 paragraph (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:



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<PAGE>   138
                           (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 clause (iv) of
                                    paragraph (a) of Section 4 of this Part II
                                    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 clause (iii) of
                                    paragraph (b) of Section 4 of this Part II
                                    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 clause (iii) of paragraph (b) of
                                    Section 4 of this Part II 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 (c) of Section 2 of this Part II 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 Section 7 of this Part II 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 clause (v) of paragraph (a) of
                                    Section 4 of this Part II 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


                                      B-92


<PAGE>   139
                  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:

                           (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;



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<PAGE>   140
                           (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 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-94

<PAGE>   141
                           (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) which if:

                  (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 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 paragraph (a) of this Section 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 paragraph (c) of this Section 3.

         (c)      For purposes of subparagraph (b)(iii) of this Section 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



                                      B-95
<PAGE>   142
                  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.

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 (a)
         of Section 3 of this Part II, 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 paragraphs (d) and (e) of this
                  Section 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



                                      B-96

<PAGE>   143
                           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
                           paragraph (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 paragraph
                  (d) of this Section 4, Submitted Orders for 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 Holder's 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 paragraph (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 paragraph (a) or clauses (iii) of paragraph (b) of this
                  Section 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 Section 4, any Potential Holder would be
                  entitled or required to purchase less than a whole share of
                  series of Municipal Preferred on any



                                      B-97

<PAGE>   144
                  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 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 believe. Such
         Broker-Dealer shall not, in its capacity as Existing Holder of shares
         of such series,



                                      B-98

<PAGE>   145
         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 in this Part
         II 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 Section 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) books
         of the Trust to any Person other than the Securities Depository or its
         nominee.



                                     B-99




<PAGE>   146
                                   APPENDIX C

                              SETTLEMENT PROCEDURES

         Capitalized terms used herein have the respective meanings specified in
the forepart of the Prospectus or the Glossary included in the Prospectus, as
the case may be.

         (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;



                                     B-100


<PAGE>   147
                  (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;

                  (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.



                                     B-101


<PAGE>   148
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
          (a)(2)    Form of Amendment No. 1 to Agreement and Declaration of
                     Trust(1)
          (b)(1)    By-Laws, as amended(1)
          (b)(2)    Amended and Restated By-Laws(1)
          (c)       Not applicable
          (d)(1)    To be filed under amendment
          (d)(2)    Form of specimen for the municipal auction rate cumulative
                     preferred shares(1)
          (e)       Dividend Reinvestment Plan
          (f)       Not applicable
          (g)       Management Agreement with Colonial Management Associates,
                     Inc.(1)
          (h)       Form of Underwriting Agreement(1)
          (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>   149


                     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(1)
          (k)(2)    Form of Broker-Dealer Agreement(1)
          (k)(3)    Agreement for Stock Transfer Services between the Registrant
                     and The First National Bank of Boston
          (k)(4)    Service Contract with Colonial Management Associates, Inc.
          (k)(5)    Amendment to Service Contract with Colonial Management
                     Associates, Inc.
          (l)(1)    Opinion and Consent of Ropes & Gray, counsel to Registrant
                     (1)
          (m)       Not applicable
          (n)(1)    Consent of independent accountants(1)
          (n)(2)    Consent of Standard & Poor's Corporation(1)
          (n)(3)    Consent of Moody's Inc.(1)
          (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)  To be filed by Amendment.

Item 25.            Marketing Arrangements.
          See Sections _______ 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(2)
               Printing(2)
               Accounting fees and expenses(2)
               Legal fees and expenses(2)
               Underwriters expense reimbursement(2)
               Auction Agent fees and expenses(2)
               Rating Agency fees and expenses(2)
               Miscellaneous(2)
                                                                --------
                    Total (2)                                  $
                                                                ========
(2)  To be filed by Amendment.

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>   150
                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>   151
<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>   152

<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>   153
<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>   154
<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>   155
<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>   156
<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>   157
<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>   158
<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>   159
<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>   160

<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.


                                      C-13
<PAGE>   161




                                   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
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 18th day of June, 1999.


                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST



                         By: STEPHEN E. GIBSON
                             --------------------
                             Stephen E. Gibson
                             President

Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement has been signed below by the following persons in their capacities and
on the date indicated.

SIGNATURES                    TITLE                         DATE
- ----------                    -----                         ----



STEPHEN E. GIBSON             President (chief              June 18, 1999
- --------------------          executive officer)
Stephen E. Gibson



J. KEVIN CONNAUGHTON          Controller and Chief          June 18, 1999
- ---------------------         Accounting Officer
J. Kevin Connaughton



TIMOTHY J. JACOBY             Treasurer and Chief           June 18, 1999
- --------------------          Financial Officer
Timothy J. Jacoby



                                      C-14
<PAGE>   162






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
SALVATORE MACERA*             Trustee                 June 18, 1999
- -----------------
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>   163



                                  EXHIBIT INDEX


          (a)(1)    Agreement and Declaration of Trust

          (e)       Dividend Reinvestment Plan

          (k)(3)    Agreement for Stock Transfer Services between the Registrant
                     and The First National Bank of Boston

          (k)(4)    Service Contract with Colonial Management Associates, Inc.

          (k)(5)    Amendment to Service Contract with Colonial Management
                     Associates, Inc.





<PAGE>   1
                                                                  EXHIBIT (a)(1)


                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST
                    -----------------------------------------



                       AGREEMENT AND DECLARATION OF TRUST
                       ----------------------------------



                                 March 16, 1989
                                 --------------



<PAGE>   2




                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST

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

                       AGREEMENT AND DECLARATION OF TRUST

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


     AGREEMENT AND DECLARATION OF TRUST made at Boston, Massachusetts, this 16th
day of March, 1989, by the Trustees hereunder, and by the holders of shares of
beneficial interest to be issued hereunder as hereinafter provided.

     WITNESSETH that

WHEREAS, this Trust has been formed to carry on the business of an investment
company; and

     WHEREAS, the Trustees have agreed to manage all property coming into their
hands as trustees of a Massachusetts business trust in accordance with the
provisions hereinafter set forth.

     NOW, THEREFORE, the Trustees hereby declare that they will hold all cash,
securities and other assets which they may from time to time acquire in any
manner as Trustees hereunder IN TRUST to manage and dispose of the same upon the
following terms and conditions for the pro rata benefit of the holders from time
to time of Shares in this Trust as hereinafter set forth.


                                    ARTICLE I

                              NAME AND DEFINITIONS



Name
- ----

     SECTION 1. This Trust shall be known as "Colonial Investment Grade
Municipal Trust" and the Trustees shall conduct the business of the Trust under
that name or any other name as they may from time to time determine.

Definitions
- -----------

     SECTION 2. Whenever used herein, unless otherwise required by the context
or specifically provided:

          (a)  The "Trust" refers to the Massachusetts business trust
     established by this Agreement and Declaration of Trust, as amended from
     time to time;

          (b)  "Trustees" refers to the Trustees of the Trust named herein or
     elected in accordance with Article IV;


<PAGE>   3


          (c)  "Shares" means the equal proportionate transferable units of
     interest into which the beneficial interest in the Trust shall be divided
     from time to time;

          (d)  "Shareholder" means a record owner of Shares;

          (e)  The 111940 Act" refers to the Investment Company Act of 1940 and
     the Rules and Regulations thereunder, all as amended from time to time;

          (f)  The terms "Affiliated Person", "Assignment", "Commission",
     "Interested Person", "Principal Underwriter" and "Majority Shareholder
     Vote" (the 67% or 50% requirement of the third sentence of Section 2(a)
     (42) of the 1940 Act, whichever may be applicable) shall have the
     applicable meanings given them in the 1940 Act;

          (g)  "Declaration of Trust" shall mean this Agreement and Declaration
     of Trust as amended or restated from time to time; and

          (h)  "By-Laws" shall mean the By-Laws of the Trust as amended from
     time to time.

                                   ARTICLE II

                                     PURPOSE

     The purpose of the Trust is to provide investors a managed investment
primarily in securities, commodities and debt instruments.


                                   ARTICLE III

                                     SHARES
Division of Beneficial Interest
- -------------------------------

        SECTION 1. The beneficial interest in the Trust shall at all times be
divided into Shares of a single series, without par value, each of which shall
represent an equal proportionate interest in the Trust with each other Share,
none having priority or preference over another. The number of Shares authorized
shall be unlimited, and the Shares so authorized may be represented in part by
fractional shares. The Trustees may from time to time divide or combine the
Shares into a greater or lesser number without thereby changing the
proportionate beneficial interests in the Trust.

Ownership of Shares
- -------------------

     SECTION 2. The ownership of Shares shall be recorded on the books of the
Trust or its transfer or similar agent. No certificates certifying the ownership
of Shares shall be issued except as the Trustees may otherwise determine from
time to time. The Trustees may make such rules as they consider appropriate for
the issuance of Share certificates, the transfer of


<PAGE>   4


Shares and similar matters. The record books of the Trust as kept by the Trust
or any transfer or similar agent of the Trust, as the case may be, shall be
conclusive as to who are the Shareholders and as to the number of Shares held
from time to time by each Shareholder.

Investments in the Trust
- ------------------------

     SECTION 3. The Trustees shall accept investments in the Trust from such
persons and on such terms and, subject to any requirements of law, for such
consideration, which may consist of cash or tangible or intangible property or a
combination thereof, as they from time to time authorize.

No Preemptive Rights
- --------------------

     SECTION 4. Shareholders shall have no preemptive or other right to receive,
purchase or subscribe for any additional Shares or other securities issued by
the Trust.

Status of Shares and Limitation of Personal Liability
- -----------------------------------------------------

     SECTION 5. Shares shall be deemed to be personal property giving only the
rights provided in this instrument.

Every Shareholder by virtue of having become a Shareholder shall be held to have
expressly assented and agreed to the terms hereof and to have become a party
hereto. The death of a Shareholder during the continuance of the Trust shall not
operate to terminate the same nor entitle the representative of any deceased
Shareholder to an accounting or to take any action in court or elsewhere against
the Trust or the Trustees, but only to the rights of said decedent under this
Trust. Ownership of Shares shall not entitle the Shareholder to any title in or
to the whole or any part of the Trust property or right to call for a partition
or division of the same or for an accounting, nor shall the ownership of Shares
constitute the Shareholders partners. Neither the Trust nor the Trustees, nor
any officer, employee or agent of the Trust, shall have any power to bind
personally any Shareholder, nor except as specifically provided herein to call
upon any Shareholder for the payment of any sum of money or assessment
whatsoever other than such as the Shareholder may at any time personally agree
to pay.

                                   ARTICLE IV

                                  THE TRUSTEES

Number of Trustees and Term of Office
- -------------------------------------

     SECTION 1. The number of Trustees shall be such number as shall be fixed
from time to time by a written instrument signed by a majority of the Trustees,
provided, however, that the number of Trustees shall in no event be less than
three (3) nor more than fifteen (15). No reduction in the number of Trustees
shall have the effect of removing any Trustee from office prior to the
expiration of his term unless the Trustee is specifically removed pursuant to
Section 2 of this Article at the time of the decrease. The Board of


<PAGE>   5


Trustees shall be divided into three classes. Within the limits above specified,
the number of Trustees in each class shall be determined by resolution of the
Board of Trustees. The initial Trustees, each of whom shall serve until the
first meeting of Shareholders at which Trustees are elected and until his or her
successor is elected and qualified, or until he or she sooner dies, resigns or
is removed, shall be John A. McNeice, Jr. and such other persons as the Trustee
or Trustees then in office shall, prior to any sale of Shares pursuant to a
public offering, appoint. The term of office of all of the initial Trustees
shall expire on the date of the first annual meeting of shareholders or special
meeting in lieu thereof, which annual or special meeting shall be called to be
held not more than fifteen months after Shares are first sold pursuant to a
public offering. The term of office of the first class shall expire on the date
of the second annual meeting of shareholders or any special meeting in lieu
thereof. The term of office of the second class shall expire on the date of the
third annual meeting of shareholders or any special meeting in lieu thereof. The
term of office of the third class shall expire on the date of the fourth annual
meeting of shareholders or any special meeting in lieu thereof. Upon expiration
of the term of office of each class as set forth above, the number of Trustees
in such class, as determined by the Board of Trustees, shall be elected for a
term expiring on the date of the third annual meeting of shareholders or any
special meeting in lieu thereof following such expiration to succeed the
Trustees whose terms of office expire. The Trustees shall be elected at an
annual meeting of the shareholders or a special meeting in lieu thereof, except
as provided in Section 2 of this Article.

Vacancies; Removal
- ------------------

     SECTION 2. Any vacancies occurring in the Board of Trustees may be filled
by the Trustees if, immediately after filling any such vacancy, at least
two-thirds of the Trustees then holding office shall have been elected to such
office by the Shareholders. In the event that at any time less than a majority
of the Trustees then holding office were elected to such office by the
Shareholders, the Trustees shall call a meeting of Shareholders for the purpose
of electing Trustees. At any meeting called for such purpose, a Trustee may be
removed, with or without cause, by vote of a majority of the outstanding shares.
By vote of a majority of the Trustees then in office, the Trustees may remove a
Trustee with or without cause.

Effect of Death, Resignation, etc. of a Trustee
- -----------------------------------------------

     SECTION 3. The death, declination, resignation, retirement, removal, or
incapacity of the Trustees, or any one of them, shall not operate to annul the
Trust or to revoke any existing agency created pursuant to the terms of this
Declaration of Trust.

Powers
- ------

     SECTION 4. Subject to the provisions of this Declaration of Trust, the
business of the Trust shall be managed by the Trustees, and they shall have all
powers necessary or convenient to carry out that responsibility.

Without limiting the foregoing, the Trustees may adopt By-Laws not inconsistent
with this Declaration of Trust providing for the conduct of the


<PAGE>   6


business of the Trust and may amend and repeal them to the extent that such
By-Laws do not reserve that right to the Shareholders; they may fill vacancies
in their number, including vacancies resulting from increases in their number,
and may elect and remove such officers and appoint and terminate such agents as
they consider appropriate; they may appoint from their own number, and
terminate, any one or more committees consisting of two or more Trustees,
including an executive committee which may, when the Trustees are not in
session, exercise some or all of the power and authority of the Trustees as the
Trustees may determine; they may appoint an advisory board, the members of which
shall not be Trustees and need not be Shareholders; they may employ one or more
custodians of the assets of the Trust and may authorize such custodians to
employ subcustodians and to deposit all or any part of such assets in a system
or systems for the central handling of securities, retain a transfer agent or a
Shareholder services agent, or both, provide for the distribution of Shares by
the Trust, through one or more principal underwriters or otherwise, set record
dates for the determination of Shareholders with respect to various matters, and
in general delegate such authority as they consider desirable to any officer of
the Trust, to any committee of the Trustees and to any agent or employee of the
Trust or to any such custodian or underwriter.

     Without limiting the foregoing, the Trustees shall have power and
authority:

          (a)  To invest and reinvest cash, and to hold cash uninvested;

          (b)  To sell, exchange, lend, pledge, mortgage, hypothecate, write
     options on and lease any or all of the assets of the Trust;

          (c)  To vote or give assent, or exercise any rights of ownership, with
     respect to stock or other securities or property; and to execute and
     deliver proxies or powers of attorney to such person or persons as the
     Trustees shall deem proper, granting to such person or persons such power
     and discretion with relation to securities or property as the Trustees
     shall deem proper;

          (d)  To exercise powers and rights of subscription or otherwise which
     in any manner arise out of ownership of securities;

          (e)  To hold any security or property in a form not indicating any
     trust, whether in bearer, unregistered or other negotiable form, or in the
     name of the Trustees or of the Trust or in the name of a custodian,
     subcustodian or other depository or a nominee or nominees or otherwise;

          (f)  To consent to or participate in any plan for the reorganization,
     consolidation or merger of any corporation or issuer, any security of which
     is or was held in the Trust; to consent to any contract, lease, mortgage,
     purchase or sale of property by such corporation or issuer, and to pay
     calls or subscriptions with respect to any security held in the Trust;

          (g)  To join with other security holders in acting through a
     committee, depositary, voting trustee or otherwise, and in that connection
     to deposit any security with, or transfer any security to, any such


<PAGE>   7


     committee, depositary or trustee, and to delegate to them such power and
     authority with relation to any security (whether or not so deposited or
     transferred) as the Trustees shall deem proper, and to agree to pay, and to
     pay, such portion of the expenses and compensation of such committee,
     depositary or trustee as the Trustees shall deem proper;

          (h)  To compromise, arbitrate or otherwise adjust claims in favor of
     or against the Trust on any matter in controversy, including but not
     limited to claims for taxes;

          (i)  To enter into joint ventures, general or limited partnerships and
     any other combinations or associations;

          (j)  To borrow funds;

          (k)  To endorse or guarantee the payment of any notes or other
     obligations of any person; to make contracts of guaranty or suretyship, or
     otherwise assume liability for payment thereof; and to mortgage and pledge
     the Trust property or any part thereof to secure any of or all of such
     obligations;

          (l)  To purchase and pay for entirely out of Trust property such
     insurance as they may deem necessary or appropriate for the conduct of the
     business of the Trust, including, without limitation, insurance policies
     insuring the assets of the Trust and payment of distributions and principal
     on its portfolio investments, and insurance policies insuring the
     Shareholders, Trustees, officers, employees, agents, investment advisers or
     managers, principal underwriters or independent contractors of the Trust
     individually against all claims and liabilities of every nature arising by
     reason of holding, being or having held any such office or position, or by
     reason of any action alleged to have been taken or omitted by any such
     person as Shareholder, Trustee, officer, employee, agent, investment
     adviser or manager, principal underwriter or independent contractor,
     including any action taken or omitted that may be determined to constitute
     negligence, whether or not the Trust would have the power to indemnify such
     person against such liability; and

          (m)  To pay pensions for faithful service, as deemed appropriate by
     the Trustees, and to adopt, establish and carry out pension,
     profit-sharing, share bonus, share purchase, savings, thrift and other
     retirement, incentive and benefit plans, trusts and provisions, including
     the purchasing of life insurance and annuity contracts as a means of
     providing such retirement and other benefits, for any or all of the
     Trustees, officers, employees and agents of the Trust.

     The Trustees shall not in any way be bound or limited by any present or
future law or custom in regard to investments by Trustees. Except as otherwise
provided herein or from time to time in the By-Laws, any action to be taken by
the Trustees may be taken by a majority of the Trustees present at a meeting of
the Trustees (a quorum being present), within or without Massachusetts,
including any meeting held by means of a conference telephone or other
communications equipment by means of which all persons participating in the
meeting can hear each other at the same time and participation by such


<PAGE>   8


means shall constitute presence in person at a meeting, or by written consents
of a majority of the Trustees then in office.

Payment of Expenses by Trust
- ----------------------------

     SECTION 5. The Trustees are authorized to pay or to cause to be paid out of
the principal or income of the Trust,

or partly out of principal and partly out of income, as they deem fair, all
expenses, fees, charges, taxes and liabilities incurred or arising in connection
with the Trust, or in connection with the management thereof, including, but not
limited to, the Trustees' compensation and such expenses and charges for the
services of the Trust's officers, employees, investment adviser or manager,
principal underwriter, auditor, counsel, custodian, transfer agent, Shareholder
servicing agent, and such other agents or independent contractors and such other
expenses and charges as the Trustees may deem necessary or proper to incur.

Ownership of Assets of the Trust
- --------------------------------

     SECTION 6. Title to all of the assets of the Trust shall at all times be
considered as vested in the Trustees.

Advisory, Management and Distribution
- -------------------------------------

     SECTION 7. Subject to a favorable Majority Shareholder Vote, the Trustees
may, at any time and from time to time, contract for exclusive or nonexclusive
advisory and/or management services with Colonial Management Associates, Inc., a
Massachusetts corporation, or any other corporation, trust, association or other
organization (the "Adviser"), every such contract to comply with such
requirements and restrictions as may be set forth in the By-Laws; and any such
contract may contain such other terms interpretive of or in addition to said
requirements and restrictions as the Trustees may determine, including, without
limitation, authority to determine from time to time what investments shall be
purchased, held, sold or exchanged and what portion, if any, of the assets of
the Trust shall be held uninvested and to make changes in the Trust's
investments. The Trustees may also, at any time and from time to time, contract
with the Adviser or any other corporation, trust, association or other
organization, appointing it exclusive or nonexclusive distributor or principal
underwriter for the Shares, every such contract to comply with such requirements
and restrictions as may be set forth in the By-Laws; and any such contract may
contain such other terms interpretive of or in addition to said requirements and
restrictions as the Trustees may determine.

     The fact that:

          (i)  any of the Shareholders, Trustees or officers of the Trust is a
     shareholder, director, officer, partner, trustee, employee, manager,
     adviser, principal underwriter or distributor or agent of or for any
     corporation, trust, association or other organization, or of or for any
     parent or affiliate of any organization, with which an advisory or
     management contract, or principal underwriter's or distributor's contract
     or transfer, shareholder services or other agency contract may have been


<PAGE>   9


     or may hereafter be made, or that any organization, or any parent or
     affiliate thereof, is a Shareholder or has an interest in the Trust, or
     that

          (ii) any corporation, trust, association or other organization with
     which an advisory or management contract or principal underwriter's or
     distributor's contract or transfer, shareholder services or other agency
     contract may have been or may hereafter be made also has an advisory or
     management contract, or principal underwriter's or distributor's contract
     or transfer, shareholder services or other agency contract with one or more
     other corporations, trusts, associations or other organizations, or has
     other business or interests

shall not affect the validity of any such contract or disqualify any
Shareholder, Trustee or officer of the Trust from voting upon or executing the
same or create any liability or accountability to the Trust or its Shareholders.

                                    ARTICLE V

                    SHAREHOLDERS' VOTING POWERS AND MEETINGS

Voting Powers
- -------------

     SECTION 1. The Shareholders shall have power to vote only (i) for the
election or removal of Trustees as provided in Article IV, Section 1, (ii) with
respect to any Adviser as provided in Article IV, Section 7, (iii) with respect
to any termination of this Trust to the extent and as provided in Article IX,
Section 4, (iv) with respect to any amendment of this Declaration of Trust to
the extent and as provided in Article IX, Section 7, (v) to the same extent as
the stockholders of a Massachusetts business corporation as to whether or not a
court action, proceeding or claim should or should not be brought or maintained
derivatively or as a class action on behalf of the Trust or the Shareholders,
(vi) with respect to such additional matters relating to the Trust as may be
required by law, this Declaration of Trust, the By-Laws or any registration of
the Trust with the Securities and Exchange Commission (or any successor agency)
or any state, or as the Trustees may consider necessary or desirable. Each whole
Share shall be entitled to one vote as to any matter on which it is entitled to
vote and each fractional Share shall be entitled to a proportionate fractional
vote. There shall be no cumulative voting in the election of Trustees. Shares
may be voted in person or by proxy. A proxy with respect to Shares held in the
name of two or more persons shall be valid if executed by any one of them unless
at or prior to exercise of the proxy the Trust receives a specific written
notice to the contrary from any one of them. A proxy purporting to be executed
by or on behalf of a Shareholder shall be deemed valid unless challenged at or
prior to its exercise and the burden of proving invalidity shall rest on the
challenger. Until Shares are issued, the Trustees may exercise all rights of
Shareholders and may take any action required by law, this Declaration of Trust
or the By-Laws to be taken by Shareholders.

Voting Power and Meetings
- -------------------------


<PAGE>   10


     SECTION 2. There shall be an annual meeting of the Shareholders on the date
fixed in the By-Laws at the office of the Trust in Boston, Massachusetts, or at
such other place as may be designated in the call thereof, which call shall be
made by the Trustees. In the event that such meeting is not held in any year on
the date fixed in the By-Laws, whether the omission be by oversight or
otherwise, a subsequent special meeting may be called by the Trustees and held
in lieu of the annual meeting with the same effect as though held on such date.
Special meetings may also be called by the Trustees from time to time for the
purpose of taking action upon any matter requiring the vote or authority of the
Shareholders as herein provided or upon any other matter deemed by the Trustees
to be necessary or desirable. Written notice of any meeting of Shareholders
shall be given or caused to be given by the Trustees by mailing such notice at
least seven days before such meeting, postage prepaid, stating the time, place
and purpose of the meeting, to each Shareholder at the Shareholder's address as
it appears on the records of the Trust. If the Trustees shall fail to call or
give notice of any meeting of Shareholders for a period of 30 days after written
application by shareholders holding at least 10% of the Shares then outstanding
requesting a meeting to be called for a purpose requiring action by the
Shareholders as provided herein or in the By-Laws, then Shareholders holding at
least 10% of the Shares then outstanding may call and give notice of such
meeting, and thereupon the meeting shall be held in the manner provided for
herein in case of call thereof by the Trustees.

Quorum and Required Vote
- ------------------------

     SECTION 3. A majority of the Shares entitled to vote shall be a quorum for
the transaction of business at a Shareholders' meeting. Any lesser number,
however, shall be sufficient for adjournments. Any adjourned session or sessions
may be held within a reasonable time after the date set for the original meeting
without the necessity of further notice. Except when a larger vote is required
by any provision of this Declaration of Trust or the By-Laws, a majority of the
Shares voted shall decide any questions and a plurality shall elect a Trustee.

Conversion
- ----------

     SECTION 4. The Trustees shall, if the conditions set forth in the
immediately following sentence have been satisfied, submit to the Shareholders
at the first annual meeting of Shareholders, or special meeting in lieu thereof,
held after January 1, 1995, a proposal that the Trust, consistent with the 1940
Act as then in effect, amend this Declaration of Trust to convert the Trust from
a "closed-end company" to an "open-end company" as those terms are defined in
Sections 5(a)(2) and 5(a)(1), respectively, of the 1940 Act, as in effect from
time to time. The Trustees shall be required to submit such proposal at such
annual meeting of Shareholders or special meeting in lieu thereof only if both
(i) Shares have traded on the principal security exchange where listed at an
average discount from net asset value of more than 10%, determined on the basis
of the discount as of the end of the last trading day in each week during the
period of 12 calendar weeks preceding January 1, 1995, and (ii) during such year
the Trust receives at its principal executive office written requests from the
holders of 10% or more of the outstanding Shares that such a proposal be
submitted to the Shareholders.


<PAGE>   11


     Notwithstanding any other provision of this Declaration of Trust, the
conversion of the Trust from a "closed-end company" to an "open-end company," as
those terms are defined in Sections 5(a)(2) and 5(a)(1), respectively, of the
1940 Act as in effect on January 1, 1989, shall require the affirmative vote or
consent of the holders of at least 66 2/3% of the Shares entitled to vote. Such
affirmative vote or consent shall be in addition to the vote or consent of the
holders of the Shares otherwise required by law or by any agreement between the
Trust and any national securities exchange.

Action by Written Consent
- -------------------------

     SECTION 5. Any action taken by Shareholders may be taken without a meeting
if a majority of Shareholders entitled to vote on the matter (or such larger
proportion thereof as shall be required by any express provision of this
Declaration of Trust or the By-Laws) consent to the action in writing and such
written consents are filed with the records of the meetings of Shareholders.
Such consent shall be treated for all purposes as a vote taken at a meeting of
Shareholders.

Additional Provisions
- ---------------------

SECTION 6. The By-Laws may include further provisions for Shareholders' votes
and meetings and related matters.



<PAGE>   12



                                   ARTICLE VI

               DISTRIBUTIONS AND DETERMINATION OF NET ASSET VALUE

Distributions
- -------------

     SECTION 1. The Trustees may, but need not, each year distribute to the
Shareholders such income and gains, accrued or realized, as the Trustees may
determine, after providing for actual and accrued expenses and liabilities
(including such reserves as the Trustees may establish) determined in accordance
with good accounting practices. The Trustees shall have full discretion to
determine which items shall be treated as income and which items as capital and
their determination shall be binding upon the Shareholders. Distributions of
each year's income, if any be made, may be made in one or more payments, which
shall be in Shares, in cash or otherwise and on a date or dates and as of a
record date or dates determined by the Trustees. At any time and from time to
time in their discretion, the Trustees may distribute to the Shareholders as of
a record date or dates determined by the Trustees, in Shares, in cash or
otherwise, all or part of any gains realized on the sale or disposition of
property or otherwise, or all or part of any other principal of the Trust. Each
distribution pursuant to this Section 1 shall be made ratably according to the
number of Shares held by the several Shareholders on the applicable record date
thereof, provided that no distribution need be made on Shares purchased pursuant
to orders received, or for which payment is made, after such time or times as
the Trustees may determine. Any such distribution paid in Shares will be paid at
the net asset value thereof as determined in accordance with Section 2 of this
Article VI, or at such other value as may be specified by the By-Laws or as the
Trustees may from time to time determine, subject to applicable laws and
regulations then in effect.

Determination of Net Asset Value
- --------------------------------

     SECTION 2. The term "net asset value" of the Shares shall mean: (i) the
value of all the assets of the Trust; (ii) less the total liabilities of the
Trust; (iii) divided by the number of Shares outstanding, in each case at the
time of each determination. Any fractions involved in the computation of net
asset value per share shall be adjusted to the nearer cent unless the Trustees
shall determine to adjust such fractions to a fraction of a cent.

     The Trustees, or any officer or officers or agent of the Trust designated
for the purpose by the Trustees, shall determine the net asset value of the
Shares, and the Trustees shall fix the times as of which the net asset value of
the Shares shall be determined and shall fix the periods during which any such
net asset value shall be effective as to sales and other transactions in the
Shares, except as such times and periods for any such transaction may be fixed
by other provisions of this Declaration of Trust or by the By-Laws.

     In valuing the portfolio investments for determination of net asset value
per share, securities for which market quotations are readily available shall be
valued at prices which, in the opinion of the Trustees, or any officer or
officers or agent of the Trust designated for the purpose by the Trustees, most
nearly represent the market value of such securities, which may, but need not,
be the most recent bid price obtained from one or more of the market


<PAGE>   13


makers for such securities; other securities and assets shall be valued at fair
value as determined by or pursuant to the direction of the Trustees.
Notwithstanding the foregoing, short-term debt obligations, commercial paper and
repurchase agreements may be, but need not be, valued on the basis of quoted
yields for securities of comparable maturity, quality and type, or on the basis
of amortized cost. In determination of net asset value, dividends receivable and
accounts receivable for investments sold and for Shares sold shall be stated at
the amounts to be received therefor; and income receivable accrued daily on
bonds and notes owned shall be stated at the amount to be received. Any other
assets shall be stated at fair value as determined by the Trustees or such
officer, officers or agent pursuant to the Trustees' authority, except that no
value shall be assigned to goodwill, furniture, lists, reports, statistics or
other noncurrent assets other than real estate. Liabilities for accounts payable
for investments purchased shall be stated at the amounts payable therefor. In
determining net asset value of the Trust, the person or persons making such
determination on behalf of the Trust may include in liabilities such reserves,
estimated accrued expenses and contingencies as such person or persons may in
its, his or their best judgment deem fair and reasonable under the
circumstances. Any income dividends and gains distributions payable by the Trust
shall be deducted as of such time or times on the record date therefor as the
Trustees shall determine.

     The manner of determining the net assets of the Trust or of determining the
net asset value of the Shares may from time to time be altered as necessary or
desirable in the judgment of the Trustees to conform to any other method
prescribed or permitted by any applicable law or regulation.

     Determinations under this Section 2 made in good faith and in accordance
with the provisions of the 1940 Act shall be binding on all parties concerned.

                                   ARTICLE VII

                           COMPENSATION AND LIMITATION
                            OF LIABILITY OF TRUSTEES

Compensation
- ------------

     SECTION 1. The Trustees as such shall be entitled to reasonable
compensation from the Trust; they may fix the amount of their compensation.
Nothing herein shall in any way prevent the employment of any Trustee for
advisory, management, legal, accounting, investment banking or other services
and payment for the same by the Trust.

Limitation of Liability
- -----------------------

     SECTION 2. The Trustees shall not be responsible or liable in any event for
any neglect or wrongdoing of any officer, agent, employee, adviser or principal
underwriter of the Trust, nor shall any Trustee be responsible for the act or
omission of any other Trustee, but nothing herein contained shall protect any
Trustee against any liability to which he or she would otherwise be subject by
reason of wilful misfeasance, bad faith, gross negligence or reckless disregard
of the duties involved in the conduct of his or her office.


<PAGE>   14


     Every note, bond, contract, instrument, certificate, Share or undertaking
and every other act or thing whatsoever executed or done by or on behalf of the
Trust or the Trustees or any of them in connection with the Trust shall be
conclusively deemed to have been executed or done only in or with respect to
their or his or her capacity as Trustees or Trustee, and such Trustees or
Trustee shall not be personally liable thereon.

                                  ARTICLE VIII

                                 INDEMNIFICATION

Trustees, Officers etc.
- -----------------------

     SECTION 1. The Trust shall indemnify each of its Trustees and officers
(including persons who serve at the Trust's request as directors, officers or
trustees of another organization in which the Trust has any interest as a
shareholder, creditor or otherwise) (hereinafter referred to as a "Covered
Person") against all liabilities and expenses, including but not limited to
amounts paid in satisfaction of judgments, in compromise or as fines and
penalties, and counsel fees reasonably incurred by any Covered Person in
connection with the defense or disposition of any action, suit or other
proceeding, whether civil or criminal, before any court or administrative or
legislative body, in which such Covered Person may be or may have been involved
as a party or otherwise or with which such person may be or may have been
threatened, while in office or thereafter, by reason of being or having been
such a Trustee or officer, except with respect to any matter as to which such
Covered Person shall have been finally adjudicated in a decision on the merits
in any such action, suit or other proceeding not to have acted in good faith in
the reasonable belief that such Covered Person's action was in the best
interests of the Trust and except that no Covered Person shall be indemnified
against any liability to the Trust or its Shareholders to which such Covered
Person would otherwise be subject by reason of wilful misfeasance, bad faith,
gross negligence or reckless disregard of the duties involved in the conduct of
such Covered Person's office. Expenses, including counsel fees so incurred by
any such Covered Person (but excluding amounts paid in satisfaction of
judgments, in compromise or as fines or penalties), may be paid from time to
time by the Trust in advance of the final disposition of any such action, suit
or proceeding upon receipt of an undertaking by or on behalf of such Covered
Person to repay amounts so paid to the Trust if it is ultimately determined that
indemnification of such expenses is not authorized under this Article, PROVIDED
THAT (a) such Covered Person shall provide security for his undertaking, (b) the
Trust shall be insured against losses arising by reason of such Covered Person's
failure to fulfill his undertaking, or (c) a majority of the Trustees who are
disinterested persons and who are not Interested Persons (provided that a
majority of such Trustees then in office act on the matter), or independent
legal counsel in a written opinion, shall determine, based on a review of
readily available facts (but not a full trial-type inquiry), that there is
reason to believe such Covered Person ultimately will be entitled to
indemnification.

Compromise Payment
- ------------------
<PAGE>   15
     SECTION 2. As to any matter disposed of (whether by a compromise payment,
pursuant to a consent decree or otherwise) without an adjudication in a decision
on the merits by a court, or by any other body before which the proceeding was
brought, that such Covered Person either (a) did not act in good faith in the
reasonable belief that such Covered Person's action was in the best interests of
the Trust or (b) is liable to the Trust or its Shareholders by reason of wilful
misfeasance, bad faith, gross negligence or reckless disregard of the duties
involved in the conduct of such Covered Person's office, indemnification shall
be provided if (a) approved as in the best interest of the Trust, after notice
that it involves such indemnification, by at least a majority of the Trustees
who are disinterested persons and are not Interested Persons (provided that a
majority of such Trustees then in office act on the matter), upon a
determination, based upon a review of readily available facts (but not a full
trial-type inquiry) that such Covered Person acted in good faith in the
reasonable belief that such Covered Person's action was in the best interests of
the Trust and is not liable to the Trust or its Shareholders by reason of wilful
misfeasance, bad faith, gross negligence or reckless disregard of the duties
involved in the conduct of such Covered Person's office, or (b) there has been
obtained an opinion in writing of independent legal counsel, based upon a review
of readily available facts (but not a full-trial type inquiry), to the effect
that such Covered Person appears to have acted in good faith in the reasonable
belief that such Covered Person's action was in the best interests of the Trust
and that such indemnification would not protect such Covered Person against any
liability to the Trust to which such Covered Person would otherwise be subject
by reason of wilful misfeasance, bad faith, gross negligence or reckless
disregard of the duties involved in the conduct of his office. Any approval
pursuant to this Section shall not prevent the recovery from any Covered Person
of any amount paid to such Covered Person in accordance with this Section as
indemnification if such Covered Person is subsequently adjudicated by a court of
competent jurisdiction not to have acted in good faith in the reasonable belief
that such Covered Person's action was in the best interests of the Trust or to
have been liable to the Trust or its Shareholders by reason of wilful
misfeasance, bad faith, gross negligence or reckless disregard of the duties
involved in the conduct of such Covered Person's office.

Indemnification Not Exclusive
- -----------------------------

     SECTION 3. The right of indemnification hereby provided shall not be
exclusive of or affect any other rights to which any such Covered Person may be
entitled. As used in this Article VIII, the term "Covered Person" shall include
such person's heirs, executors and administrators, and a "disinterested person"
is a person against whom none of the actions, suits or other proceedings in
question or another action, suit or other proceeding on the same or similar
grounds is then or has been pending. Nothing contained in this Article shall
affect any rights to indemnification to which personnel of the Trust, other than
Trustees and officers, and other persons may be entitled by contract or
otherwise under law, nor the power of the Trust to purchase and maintain
liability insurance on behalf of such person.

Shareholders
- ------------
<PAGE>   16


     SECTION 4. In case any Shareholder or former Shareholder shall be held to
be personally liable solely by reason of his or her being or having been a
Shareholder and not because of his or her acts or omissions or for some other
reason, the Shareholder or former Shareholder (or his or her heirs, executors,
administrators or other legal representatives or, in the case of a corporation
or other entity, its corporate or other general successor) shall be entitled to
be held harmless from and indemnified against all loss and expense arising from
such liability.

                                   ARTICLE IX

                                 MISCELLANEOUS

Trustees, Shareholders etc. Not Personally Liable: Notice
- ---------------------------------------------------------

     SECTION 1. All persons extending credit to, contracting with or having any
claim against the Trust shall look only to the assets of the Trust for payment
under such credit, contract or claim; and neither the Shareholders nor the
Trustees, nor any of the Trust's officers, employees or agents, whether past,
present or future, shall be personally liable therefor. Nothing in this
Declaration of Trust shall protect any Trustee against any liability to which
such Trustee would otherwise be subject by reason of wilful misfeasance, bad
faith, gross negligence or reckless disregard of the duties involved in the
conduct of the office of Trustee.

     Every note, bond, contract, instrument, certificate or undertaking made or
issued by the Trustees or by any officers or officer shall give notice that this
Declaration of Trust is on file with the Secretary of State of The Commonwealth
of Massachusetts and shall recite that the same was executed or made by or on
behalf of the Trust or by them as Trustees or Trustee or as officers or officer
and not individually and that the obligations of such instrument are not binding
upon any of them or the Shareholders individually but are binding only upon the
assets and property of the Trust, and may contain such further recital as he or
she or they may deem appropriate, but the omission thereof shall not operate to
bind any Trustees or officers or officer or Shareholders or Shareholder
individually.

Trustee's Good Faith Action, Expert Advice, No Bond or Surety
- -------------------------------------------------------------

     SECTION 2. The exercise by the Trustees of their powers and discretions
hereunder shall be binding upon everyone interested. A Trustee shall be liable
for his or her own wilful misfeasance, bad faith, gross negligence or reckless
disregard of the duties involved in the conduct of the office of Trustee, and
for nothing else, and shall not be liable for errors of judgment or mistakes of
fact or law. The Trustees may take advice of counsel or other experts with
respect to the meaning and operation of this Declaration of Trust, and shall be
under no liability for any act or omission in accordance with such advice or for
failing to follow such advice. The Trustees shall not be required to give any
bond as such, nor any surety if a bond is required.

Liability of Third Persons Dealing with Trustees
- ------------------------------------------------


<PAGE>   17


     SECTION 3. No person dealing with the Trustees shall be bound to make any
inquiry concerning the validity of any transaction made or to be made by the
Trustees or to see to the application of any payments made or property
transferred to the Trust or upon its order.

Duration and Termination of Trust
- ---------------------------------

     SECTION 4. Unless terminated as provided herein, the Trust shall continue
without limitation of time. The Trust may be terminated at any time by vote of
Shareholders holding at least 66 2/3% of the Shares entitled to vote or by the
Trustees by written notice to the Shareholders.

     Upon termination of the Trust, after paying or otherwise providing for all
charges, taxes, expenses and liabilities, whether due or accrued or anticipated
as may be determined by the Trustees, the Trust shall in accordance with such
procedures as the Trustees consider appropriate reduce the remaining assets to
distributable form in cash or shares or other securities, or any combination
thereof, and distribute the proceeds to the Shareholders, ratably according to
the number of Shares held by the several Shareholders on the date of
termination.

Filing of Copies, References, Headings
- --------------------------------------

     SECTION 5. The original or a copy of this instrument and of each amendment
hereto shall be kept at the office of the Trust where it may be inspected by any
Shareholder. A copy of this instrument and of each amendment hereto shall be
filed by the Trust with the Secretary of The Commonwealth of Massachusetts and
with the Clerk of the City of Boston, as well as any other governmental office
where such filing may from time to time be required. Anyone dealing with the
Trust may rely on a certificate by an officer of the Trust as to whether or not
any such amendments have been made and as to any matters in connection with the
Trust hereunder; and, with the same effect as if it were the original, may rely
on a copy certified by an officer of the Trust to be a copy of this instrument
or of any such amendments. In this instrument and in any such amendment,
references to this instrument, and all expressions like "herein", "hereof" and
"hereunder", shall be deemed to refer to this instrument as amended or affected
by any such amendments. Headings are placed herein for convenience of reference
only and shall not be taken as a part hereof or control or affect the meaning,
construction or effect of this instrument. This instrument may be executed in
any number of counterparts, each of which shall be deemed an original.

Applicable Law
- --------------

     SECTION 6. This Declaration of Trust is made in The Commonwealth of
Massachusetts, and it is created under and is to be governed by and construed
and administered according to the laws of said Commonwealth. The Trust shall be
of the type commonly called a Massachusetts business trust, and without limiting
the provisions hereof, the Trust may exercise all powers which are ordinarily
exercised by such a trust.

Amendments
- ----------


<PAGE>   18


     SECTION 7. (a) Except as provided in paragraph (b) of this Section 7, this
Declaration of Trust may be amended at any time by an instrument in writing
signed by a majority of the then Trustees when authorized so to do by a vote of
Shareholders holding a majority of the Shares entitled to vote. Amendments
having the purpose of changing the name of the Trust or of supplying any
omission, curing any ambiguity or curing, correcting or supplementing any
defective or inconsistent provision contained herein shall not require
authorization by Shareholder vote.

          (b)  No amendment may be made under this Section 7 which shall amend,
     alter, change or repeal any of the provisions of Article IV, Section 1,
     Article V, Section 4 or this paragraph (b) unless the amendment effecting
     such amendment, alteration, change or repeal shall receive the affirmative
     vote or consent of at least 66 2/3% of the Shares entitled to vote. Such
     affirmative vote or consent shall be in addition to the vote or consent of
     the holders of Shares otherwise required by law or by the terms of any
     agreement between the Trust and any national securities exchange.

IN WITNESS WHEREOF, all of the Trustees as aforesaid do hereto set their hands
this 16th day of March, 1989.



                              John A. McNeice, Jr.


COMMONWEALTH OF MASSACHUSETTS )
                              )
COUNTY OF SUFFOLK             ) ss.


COUNTY OF SUFFOLK



Then personally appeared before me John A. McNeice, Jr., who acknowledged the
foregoing instrument to be his free act and deed.

                                   Diane Joyce
                                   Notary Public

                                   My commission expires on: 3/2/95

March 16, 1989



<PAGE>   1
                                                                     EXHIBIT (e)

                           DIVIDEND REINVESTMENT PLAN

As a shareholder in the Trust you are eligible to participate in the Dividend
Reinvestment Plan.

The Trust generally distributes net investment income and net short-term capital
gains monthly and net long-term capital gains annually. Under the Trust's
Dividend Reinvestment Plan (the "Plan") all distributions are reinvested
automatically in additional shares of the Trust, unless the shareholder elects
to receive cash or the shares are held in broker or nominee name and a
reinvestment service is not provided by the broker or nominee. All cash
distributions will be mailed by check directly to the record holder by the
dividend paying agent.

If the market price of Trust shares on the distribution payment date is equal to
or greater than the net asset value, Plan participants will be issued shares at
the higher of net asset value or 95% of the market price. However, if the market
price of shares is less than the net asset value, shares will be bought as soon
as practicable (but no more than 30 days after the distribution, except as may
be required to comply with federal securities laws) in the open market for the
accounts of Plan participants. If, during this purchase period, the market price
surpasses the net asset value, the average per share price paid may exceed the
net asset value of the shares, resulting in the acquisition of fewer shares than
if the distribution had been in newly-issued shares. The aggregate market value
of the shares may constitute taxable income to shareholders for federal income
tax purposes.

All Plan accounts receive monthly written confirmations of all transactions.
Shares purchased under the Plan ordinarily are held in uncertificated form,
although each participant has the right to receive certificates for whole shares
owned by the participant. Each shareholder's proxy includes shares purchased
pursuant to the Plan. The automatic reinvestment of distributions does not
relieve participants of any income tax payable on the distributions.

There is no charge to Plan participants for reinvesting distributions. Fees and
expenses of the Plan other than brokerage charges are paid by the Trust.
Participants bear a pro-rata share of brokerage charges incurred on open market
purchases of shares issued under the Plan.

A shareholder may elect not to participate or terminate his or her participation
in the Plan by written notice to the Plan administrator. Such notice must be
received by the Plan administrator before the dividend record date in order to
be effective with respect to that dividend. The Plan may be amended or
terminated on 30 days' written notice to the Plan participants. Upon withdrawal
by any participant or any termination of the Plan, certificates for whole shares
will be issued and cash payments will be made for any fractional shares. All
correspondence concerning the Plan should be directed to The First National Bank
of Boston, the Trust's dividend disbursing agent and administrator of the Plan,
at P.O. Box 1681, Boston, Massachusetts 02105, Attention: Dividend Reinvestment
Department.

<PAGE>   1

                                                                  EXHIBIT (k)(3)


                      AGREEMENT FOR STOCK TRANSFER SERVICES
                      -------------------------------------

                                     between

                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST
                    -----------------------------------------

                                       and

                        THE FIRST NATIONAL BANK OF BOSTON
                        ---------------------------------

               This Agreement sets forth the terms and conditions under which
The First National Bank of Boston ("Bank of Boston") will serve as Sole Transfer
Agent and Registrar for the Common Stock of Colonial Investment Grade Municipal
Trust (hereinafter referred to as Colonial Investment).


A.             TERM
               ----

               The term of this Agreement shall be for a period of three (3)
years, commencing from the effective date of this Agreement, June 1, 1990.


B.             FEE FOR STANDARD SERVICES
               -------------------------

               For the standard services as stated in Section C provided by Bank
of Boston under this Agreement, Colonial Investment will be charged as follows:


               $9.05 PER ACCOUNT, PER ANNUM

               The per account fee, as stated hereinabove, is to be adjusted
               annually by the Employment Cost Index. (See Section J, Employment
               Cost Index Adjustment).


C.             STANDARD SERVICES
               -----------------

               Bank of Boston agrees to provide the following services to
Colonial Investment in accordance with the standard fee set forth in Section B
hereinabove.


ACCOUNT MAINTENANCE:

               1.   Annual Administrative Services as Transfer Agent
               2.   Annual Administrative Services as Registrar
               3.   Maintaining shareholder accounts, including processing of
                    new accounts
               4.   Posting and acknowledging address changes and processing
                    other routine file
                    maintenance adjustments
               5.   Posting all transactions, including debit and credit
                    certificates to the stockholder file
               6.   Researching and responding to all stockholder inquiries



<PAGE>   2



                                                       Colonial Investment
                                                       Grade Municipal Trust
                                                       Page 2
                                                       ------


CERTIFICATE ISSUANCE:

               7.   Certificate issuance ' cancellation and registration*
               8.   Daily Transfer Reports
               9.   Processing window items, mail items and all legal transfers
               10.  Combining certificates into large denominations
               11.  Processing Indemnity Bonds and replacing lost certificates
               12.  Maintaining stop-transfers, including the placing and
                    removing of same


MAILING, REPORTING AND MISCELLANEOUS SERVICES:

               13.  Addressing and enclosing quarterly reports, three (3) per
                    annum
               14.  Preparing a full statistical report to reflect shareholder
                    base by geographic residence code, class code, and share
                    group, one (1) per annum
               15.  Coding "multiple" accounts at a single household to suppress
                    mailing of reports to same


ANNUAL MEETING SERVICES:

               16.  Preparing a full stockholder list as of the Annual Meeting
                    Record Date
               17.  Addressing proxy cards
               18.  Enclosing proxy card along with notice and statement,
                    return envelope and Annual Report via Bipak envelope
               19.  Receiving, opening and examining returned proxies
               20.  Writing in connection with unsigned or improperly executed
                    proxies
               21.  Providing summary reports on status of tabulation on a daily
                    basis
               22.  Responding to inquiries as to whether specific accounts have
                    yet voted
               23.  Tabulating returned proxies to include two (2) proposals,
                    excess to be billed at $0.03 per account, per proposal
               24.  Preparing a final Annual Meeting list reflecting how each
                    account has voted on each proposal


ABANDONED PROPERTY REPORTING SERVICES:

               25.  PREPARING an Abandoned PROPERTY REPORT, ONE (1) PER annum



<PAGE>   3



                                                       Colonial Investment
                                                       Grade Municipal Trust
                                                       Page 3
                                                       ------


DIVIDEND SERVICES:

               As Dividend Disbursing Agent and Paying Agent (checks to be drawn
on The First National Bank of Boston and funds immediately available in-house on
payable date), we will perform the following dividend related services:

               26.  Preparing and mailing monthly dividends (check includes
                    address-change feature) with an enclosure with each dividend
                    check
               27.  Preparing and filing Federal Information Returns (Form 1099)
                    of dividends paid in a year and mailing a statement to each
                    stockholder
               28.  Preparing and filing State Information Returns of dividends
                    paid in a year to stockholders resident within such state
               29.  Preparing and filing annual withholding return and
                    payments to government of income taxes withheld from
                    non-resident aliens (Form 1042)
               30.  Replacing lost dividend checks
               31.  Providing photocopies of cancelled checks when requested
               32.  Reconciling paid and outstanding checks
               33.  Coding "undeliverable" accounts to suppress mailing
                    dividend checks to same
               34.  Processing and recordkeeping of accumulated uncashed
                    dividends
               35.  Furnishing requested dividend information to stockholders
               36.  Performing the following duties as required by the Interest
                    and Dividend Tax Compliance Act of 1983:

                    --   Withholding Tax from Shareholder accounts not in
                         compliance with the provisions of the Act
                    --   Reconciling and reporting taxes withheld, including
                         additional 1099 reporting requirements, to the Internal
                         Revenue Service
                    --   Responding to shareholder inquiries regarding the
                         Regulations
                    --   Mailing to new accounts who have had taxes withheld,
                         to inform them of procedures to be followed to curtail
                         subsequent back-up withholding
                    --   Annual mailing to pre-1984 accounts which have not yet
                         been certified
                    --   Performing shareholder file adjustments to reflect
                         certification of accounts



<PAGE>   4




                                                       Colonial Investment
                                                       Grade Municipal Trust
                                                       Page 4
                                                       ------



DIVIDEND REINVESTMENT SERVICES:

               As Administrator of your Open Market Dividend Reinvestment Plan
(DRP), Bank of Boston would perform the following DRP related services:

               37.  Reinvestment and/or cash investment transactions of Dividend
                    Reinvestment Plan participant accounts*
               38.  Preparing and mailing dividend reinvestment detailed
                    statement with an additional enclosure to each Dividend
                    Reinvestment Plan participant
               39.  Preparing and mailing cash investment detailed statement
                    with an additional enclosure to each Dividend Reinvestment
                    Plan participant
               40.  Maintaining DRP accounts and establishing new participant
                    accounts
               41.  Processing termination requests
               42.  Processing withdrawal requests
               43.  Supplying summary reports for each reinvestment/investment
                    to Colonial Investment
               44.  Certificate depository
               45.  Handling shareholder inquiries concerning the Plan
               46.  Preparation and mailing of Form 1099 to participants and
                    related filings with the IRS



D.             * LIMITATIONS, EXCLUSIONS AND ADDITIONAL FEES
               ---------------------------------------------


               The fee as stated in Section B includes:

               47.  The issuance and registration of four thousand (4,000)
               certificates per annum; excess will be billed at $1.60 each.

               48.  A total of twenty five thousand (25,000) DRP transactions
               (a transaction is defined as a dividend reinvestment, cash
               investment, withdrawal or redemption), per annum; excess will be
               billed at $1.00 each.

               The fee as stated in Section B excludes the following fees
associated with Respondent Bank processing:

               Respondent Bank Administration Fee                       $250.00
               For each Respondent Bank Omnibus Proxy received          $ 50.00
               For each Respondent Bank Search Card mailed              $  5.00



<PAGE>   5



                                                       Colonial Investment Grade
                                                       Municipal Trust
                                                       Page 5
                                                       ------

E.             ITEMS NOT COVERED
               -----------------

               Items not included in the fees set forth in this Agreement for
"Standard Services" such as payment of a stock dividend, public offerings or any
services associated with a special project are to be billed separately, on an
appraisal basis.

               Services required by legislation or regulatory fiat which become
effective after the date of this Agreement shall not be a part of the Standard
Services and shall be billed by appraisal.

               All out-of-pocket expenses such as telephone line charges
associated with (800) Toll-Free telephone calls, postage, insurance, stationary,
etc. will be billed as incurred.


F.             BILLING DEFINITION OF ACCOUNT MAINTENANCE
               -----------------------------------------

               For billing purposes, number of accounts will be based on open
accounts on file at beginning of each billing period, plus any new accounts
added during that period.


G.             TERMINATION
               -----------

               This Agreement is terminable upon 30 days written notice by
either party. If this Agreement is terminated there will be a termination charge
equivalent to those fees and expenses covering the coordination of Bank of
Boston's termination process and the transfer of Colonial Investment's records
to the successor Stock Transfer Agent.


H.             PAYMENT FOR SERVICES
               --------------------

               It is agreed that invoices will be rendered and payable on a
monthly basis. Each billing period will, therefore, be of one-month duration.


I.             NON-ASSIGNABILITY
               -----------------

               This Agreement, and the duties, obligations and services to be
provided herein, may not be assigned or otherwise transferred without the prior
written consent of Colonial Investment.


<PAGE>   6




                                                       Colonial Investment
                                                       Grade Municipal Trust
                                                       Page 6
                                                       ------


J.             EMPLOYMENT COST INDEX ADJUSTMENT
               --------------------------------

               An Employment Cost Index Rate analysis will be performed annually
by Bank of Boston at the contract's anniversary date and the per account fee
will be adjusted accordingly.


K.             CONFIDENTIALITY
               ---------------

               The information contained in this Agreement is confidential and
proprietary in nature. By receiving this Agreement, Colonial Investment agrees
that none of its directors, officers, employees, or agents without the prior
written consent of the Bank, will divulge, furnish or make accessible to any
third party, except as permitted by the next sentence, any part of this
Agreement or information in connection therewith which has been or may be made
available to it. In this connection, Colonial Investment agrees that it will
limit access to the Agreement and such information to only those officers or
employees with responsibilities for analyzing the Agreement and to such
independent consultants hired expressly for the purpose of assisting in such
analysis. In addition, Colonial Investment agrees that any persons to whom such
information is properly disclosed shall be informed of the confidential nature
of the Agreement and the information relating thereto, and shall be directed to
treat the same appropriately.


ACCEPTED AND AGREED AS OF THE 1 DAY OF JUNE 1990.

THE FIRST NATIONAL BANK OF BOSTON                 COLONIAL INVESTMENT GRADE
- ---------------------------------                 -------------------------
                                                  MUNICIPAL TRUST
                                                  ---------


BY:  [illegible]                                  BY:   M. Hardie
     -----------                                        ---------


TITLE: - VICE PRESIDENT                           TITLE: Sr V.P.
                                                         -------


DATE:  5/14/90                                    DATE:  5/23/90
       -------                                           -------




<PAGE>   1
                                                                 EXHIBIT (k)(4)

                                SERVICE CONTRACT


     AGREEMENT dated as of May 19, 1989, between Colonial Management Associates,
Inc. ("Colonial"), a Massachusetts corporation with principal offices at One
Financial Center, Boston, Massachusetts, and Colonial Investment Grade Municipal
Trust (the "Trust"), a Massachusetts business trust with principal offices at
One Financial Center, Boston, Massachusetts.


     1.   APPOINTMENT. The Trust hereby appoints Colonial as agent to perform
certain services, all as described in Paragraph 2 hereunder, for the Trust, such
appointment to take effect at the close of business on the date hereof.


     2.   SERVICES. Colonial shall be responsible for (i) the determination of
the Trust's net assets and the net asset value per share of the Trust's
outstanding shares and the offering price, if any, at which the Trust's shares
are sold, at the times and in the manner from time to time directed by the
trustees or officers of the Trust ("pricing") and the timely communication of
such information to the person or persons designated by the Trust; and (ii)
maintaining the accounts, books and other records of the Trust required by
Section 31(a) of the Investment Company Act of 1940 and the rules thereunder
("bookkeeping"). All accounts, books and other records shall be available for
inspection and use by the Trust and shall be preserved by Colonial for the
periods and in the places required by Rule 3la-2 under the Investment Company
Act of 1940. Colonial shall furnish at its expense office space and all
necessary light, heat, telephone service, office equipment, stationery and
stenographic, clerical, mailing and messenger services in connection with such
pricing and bookkeeping.


     3.   AUDIT AND INSPECTION. Colonial shall make available during regular
business hours all accounts, books and other records created and maintained
pursuant to this Agreement for reasonable audit and inspection by the Trust, any
person retained by the Trust or any regulatory agency having authority over the
Trust. Upon reasonable notice by the Trust, Colonial shall make available during
regular business hours its facilities and premises employed in connection with
its performance of this Agreement for reasonable inspection by the Trust, any
person retained by the Trust or any regulatory agency having authority over the
Trust.


     4.   COMPENSATION. For the performance of its obligations hereunder, the
Trust shall pay Colonial a monthly fee equal to the following percentages of the
average of the weekly closing value of the Trust's total net assets for the
month concerned: for the period from the date of this Agreement through July 31,
1990, 0% of such assets; and from and after August 1, 1990, 1/12 of .0125% of
such assets.

     In the event this Agreement is in effect for only part of any fiscal year
of the Trust, the fee payable shall be reduced proportionately on the basis of
the number of business days (any day on which the New York Stock Exchange is
open for trading) during which the Agreement was in effect for such year.


     5.   USE OF TRUST'S NAME. Colonial shall not use the name of the Trust or
material relating to the Trust on any forms for other than internal use in any
manner not approved prior thereto in writing, provided, however, that the Trust
shall approve all uses of its name which merely refer in accurate terms to the
appointment of Colonial hereunder or which are required by the Securities and
Exchange Commission or a state securities commission and provided, further, that
in no event shall such approval be unreasonably withheld.


     6.   SECURITY. Colonial represents and warrants that the various procedures
and systems which Colonial has implemented with regard to safeguarding the
Trust's accounts, books and other records and Colonial's records, data,
equipment, facilities and other property used in the performance of its
obligations hereunder from loss or


<PAGE>   2


damage attributable to fire, theft or any other cause are adequate, and that it
will make such changes therein from time to time as in its judgment are required
for the secure performance of its obligations hereunder.


     7.   LIMITATION OF LIABILITY. Colonial shall not be liable to the Trust or
to its shareholders or creditors for any matter or thing in connection with the
performance of its obligations hereunder, except on account of Colonial's
willful misfeasance, bad faith or gross negligence in the performance of its
obligations hereunder or by reason of its reckless disregard of its obligations
hereunder.


     8.   ACTS OF GOD ETC. Colonial shall not be liable for delays or errors
occurring by reason of circumstances beyond its control, including but not
limited to acts of civil or military authority, national emergencies, work
stoppage, fire, flood, catastrophe, acts of God, insurrection, war, riot or
failure of communication or power supply. In the event of equipment breakdown
beyond its control, Colonial shall, at no additional expense to the Trust, take
reasonable steps to minimize service interruptions but shall have no liability
with respect thereto.


     9.   AMENDMENTS. Colonial and the Trust shall regularly consult with each
other regarding Colonial's performance of its obligations and its compensation
hereunder. In connection therewith, the Trust shall submit to Colonial a
reasonable time in advance of filing with the Securities and Exchange Commission
copies of any amended or supplemented registration statements (including
exhibits) under the Securities Act of 1933, as amended, and the Investment
Company Act of 1940, as amended. In the event that a change in such documents or
the procedures contained therein materially increases the cost to Colonial of
performing its obligations hereunder for any period subsequent to July 31, 1990,
Colonial shall be entitled to receive reasonable compensation therefor.


     10.  DURATION, TERMINATION, etc. Neither this Agreement nor any provisions
hereof may be changed, waived, discharged or terminated orally, but only by
written instrument which shall make specific reference to this Agreement and
which shall be signed by the party against which enforcement of such change,
waiver, discharge or termination is sought. This Agreement shall continue in
effect until April 30, 1991 and thereafter from year to year provided that such
continuance is specifically approved by vote of a majority of the trustees of
the Trust who are not affiliated with Colonial. This Agreement may be terminated
at any time by thirty days' written notice given by Colonial to the Trust or
thirty days' written notice given by the Trust to Colonial; and provided further
that this Agreement may be terminated immediately at any time for cause either
by the Trust or by Colonial in the event that such cause remains unremedied for
a reasonable period of time not to exceed ninety days after receipt of written
specification of such cause. Any such termination shall not affect the rights
and obligations of the parties under Paragraphs 7 and 8 hereof. In the event
that the Trust designates a successor to any of Colonial's obligations
hereunder, Colonial shall, at the expense and direction of the Trust, transfer
to such successor all relevant accounts, books and other records established or
maintained by Colonial hereunder.


     11.  MISCELLANEOUS. Each party agrees to perform such further acts and
execute such further documents as are necessary to effectuate the purposes
hereof. This Agreement shall be construed and enforced in accordance with and
governed by the laws of The Commonwealth of Massachusetts. A copy of the
Agreement and Declaration of Trust of Colonial Investment Grade Municipal Trust
is on file with the Secretary of State of The Commonwealth of Massachusetts.

This Agreement is executed on behalf of the Trustees of the Trust as Trustees
and not individually and the obligations of this Agreement 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 Agreement may be
executed simultaneously in two counterparts, which taken together shall
constitute one and the same instrument.



<PAGE>   3



IN WITNESS WHEREOF, the parties have duly executed this Agreement as of the date
and year first above written.


                                        COLONIAL INVESTMENT GRADE MUNICIPAL
                                        TRUST



                                        By:  Evelyn A. Mellen


                                        COLONIAL MANAGEMENT ASSOCIATES, INC.



                                        By:  Julian Daly






<PAGE>   1
                                                                 EXHIBIT (k)(5)

                    COLONIAL INVESTMENT GRADE MUNICIPAL TRUST
                              One Financial Center
                                Boston, MA 02111



                                                       January 1, 1990


Colonial Management Associates, Inc.
One Financial Center
Boston, MA 02111



Dear Sirs:

     This is in connection with the Service Contract (the "Contract") dated May
19, 1989.

     This is to advise you that effective January 1, 1990, Section 4. of said
Contract is amended to read in its entirety as follows:

     "4. COMPENSATION. For the performance of its obligations hereunder, the
Trust shall pay Colonial a monthly fee determined as follows:

     A monthly fee of $1,500, plus percentage fee on assets equal to the
following: 0% for the first $50 million of Trust assets; a monthly fee of 1/12
of .0233% on the next $950 million; 1/12 of .0167% on the next $1 billion; 1/12
of .0100% of the next $1 billion; and 1/12 of .0007% on the excess over $3
billion of the average weekly net assets of the Trust for such month.

     In the event this Agreement is in effect for only part of any month, the
fee payable shall be reduced proportionately on the basis of the number of
business days (any day on which the New York Stock Exchange is open for trading)
during which the Agreement was in effect for such month."

                                   Colonial Management Associates, Inc.



                                   Julian Daly, Vice President


                                   Colonial Investment Grade Municipal Trust


                                   Evelyn A. Mellen, Vice President





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