MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND OF MLMSMST
485BPOS, 1996-10-29
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<PAGE>   1
 
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 29, 1996
    
 
                                                SECURITIES ACT FILE NO. 33-49873
                                        INVESTMENT COMPANY ACT FILE NO. 811-4375
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                   FORM N-1A
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933          [X]
                          PRE-EFFECTIVE AMENDMENT NO.                        [ ]
                         POST-EFFECTIVE AMENDMENT NO. 4                      [X]
                                     AND/OR
        REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940      [X]
                               AMENDMENT NO. 130                             [X]
                        (CHECK APPROPRIATE BOX OR BOXES)
                            ------------------------
                   MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND
                          OF MERRILL LYNCH MULTI-STATE
                             MUNICIPAL SERIES TRUST
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)
 
<TABLE>
<S>                                           <C>
            800 SCUDDERS MILL ROAD
            PLAINSBORO, NEW JERSEY                                08536
   (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)                      (ZIP CODE)
</TABLE>
 
       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE (609) 282-2800
 
                                 ARTHUR ZEIKEL
                MERRILL LYNCH MULTI-STATE MUNICIPAL SERIES TRUST
                 800 SCUDDERS MILL ROAD, PLAINSBORO, NEW JERSEY
                   MAILING ADDRESS: P.O. BOX 9081, PRINCETON,
                             NEW JERSEY 08543-9081
                    (NAME AND ADDRESS OF AGENT FOR SERVICE)
                            ------------------------
 
                                   COPIES TO:
 
   
<TABLE>
<S>                                           <C>
            COUNSEL FOR THE TRUST:                       PHILIP L. KIRSTEIN, ESQ.
               BROWN & WOOD LLP                           FUND ASSET MANAGEMENT
            ONE WORLD TRADE CENTER                            P.O. BOX 9011
        NEW YORK, NEW YORK 10048-0557                PRINCETON, NEW JERSEY 08543-9011
     ATTENTION: THOMAS R. SMITH JR., ESQ.
           BRIAN M. KAPLOWITZ, ESQ.
</TABLE>
    
 
                            ------------------------
 IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (CHECK APPROPRIATE BOX)
   
                      [X] immediately upon filing pursuant to paragraph (b)
    
   
                      [ ] on (date) pursuant to paragraph (b)
    
                      [ ] 60 days after filing pursuant to paragraph (a)(1)
                      [ ] on (date) pursuant to paragraph (a)(1)
                      [ ] 75 days after filing pursuant to paragraph (a)(2)
                      [ ] on (date) pursuant to paragraph (a)(2) of Rule 485.
 
            IF APPROPRIATE, CHECK THE FOLLOWING BOX:
                      [ ] this post-effective amendment designates a new
                          effective date for a previously filed post-effective
                          amendment.
                            ------------------------
   
     The Registrant has registered an indefinite number of its shares of
beneficial interest under the Securities Act of 1933 pursuant to Rule 24f-2
under the Investment Company Act of 1940. The notice required by such rule for
the Registrant's most recent fiscal year was filed on September 24, 1996.
    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
                 MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND OF
 
                MERRILL LYNCH MULTI-STATE MUNICIPAL SERIES TRUST
 
                      REGISTRATION STATEMENT ON FORM N-1A
                            ------------------------
 
                             CROSS REFERENCE SHEET
 
<TABLE>
<CAPTION>
N-1A ITEM NO.                                                           LOCATION
- --------------                                           ---------------------------------------
<S>             <C>                                      <C>
PART A
  Item 1.       Cover Page.............................  Cover Page
  Item 2.       Synopsis...............................  Fee Table
  Item 3.       Condensed Financial Information........  Financial Highlights; Performance Data
  Item 4.       General Description of Registrant......  Investment Objective and Policies;
                                                           Additional Information
  Item 5.       Management of the Fund.................  Fee Table; Management of the Trust;
                                                         Inside Back Cover Page
  Item 5A.      Management's Discussion of Fund
                  Performance..........................  Not Applicable
  Item 6.       Capital Stock and Other Securities.....  Cover Page; Merrill Lynch Select
                                                         Pricing(SM) System; Additional
                                                           Information
  Item 7.       Purchase of Securities Being Offered...  Cover Page; Fee Table; Merrill Lynch
                                                         Select Pricing(SM) System; Purchase of
                                                           Shares; Shareholder Services;
                                                           Additional Information; Inside Back
                                                           Cover Page
  Item 8.       Redemption or Repurchase...............  Fee Table; Merrill Lynch Select
                                                         Pricing(SM) System; Purchase of Shares;
                                                           Redemption of Shares
  Item 9.       Pending Legal Proceedings..............  Not Applicable
PART B
  Item 10.      Cover Page.............................  Cover Page
  Item 11.      Table of Contents......................  Back Cover Page
  Item 12.      General Information and History........  Additional Information
  Item 13.      Investment Objective and Policies......  Investment Objective and Policies
  Item 14.      Management of the Fund.................  Management of the Trust
  Item 15.      Control Persons and Principal Holders
                  of Securities........................  Management of the Trust; General
                                                           Information--Additional Information
  Item 16.      Investment Advisory and Other
                  Services.............................  Management of the Trust; Purchase of
                                                           Shares; General Information
  Item 17.      Brokerage Allocation and Other
                  Practices............................  Portfolio Transactions
  Item 18.      Capital Stock and Other Securities.....  General Information--Description of
                                                         Series and Shares
  Item 19.      Purchase, Redemption and Pricing of
                  Securities Being Offered.............  Purchase of Shares; Redemption of
                                                         Shares; Determination of Net Asset
                                                           Value; Shareholder Services
  Item 20.      Tax Status.............................  Distributions and Taxes
  Item 21.      Underwriters...........................  Purchase of Shares
  Item 22       Calculation of Performance Data........  Performance Data
  Item 23.      Financial Statements...................  Financial Statements
</TABLE>

PART C
 
     Information required to be included in Part C is set forth under the
appropriate Item, so numbered, in Part C to this Registration Statement.
<PAGE>   3
 
PROSPECTUS
   
OCTOBER 29, 1996
    
 
                   MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND
                MERRILL LYNCH MULTI-STATE MUNICIPAL SERIES TRUST
   P.O. BOX 9011, PRINCETON, NEW JERSEY 08543-9011 - PHONE NO. (609) 282-2800
 
   
    Merrill Lynch Maryland Municipal Bond Fund (the "Fund") is a mutual fund
seeking to provide shareholders with as high a level of income exempt from
Federal and Maryland income taxes as is consistent with prudent investment
management. The Fund invests primarily in a non-diversified portfolio of
long-term, investment grade obligations issued by or on behalf of the State of
Maryland, its political subdivisions, agencies and instrumentalities and
obligations of other qualifying issuers, such as issuers located in Puerto Rico,
the Virgin Islands and Guam, which pay interest exempt from Federal and Maryland
income taxes ("Maryland Municipal Bonds"). Dividends paid by the Fund are exempt
from Federal and Maryland income taxes to the extent they are paid from interest
on Maryland Municipal Bonds. The Fund may invest in certain tax-exempt
securities classified as "private activity bonds" that may subject certain
investors in the Fund to an alternative minimum tax. At times, the Fund may seek
to hedge its portfolio through the use of futures transactions and options.
There can be no assurance that the investment objective of the Fund will be
realized. For more information on the Fund's investment objective and policies,
please see "Investment Objective and Policies" on page 9.
    
                           -------------------------
 
    Pursuant to the Merrill Lynch Select Pricing(SM) System, the Fund offers
four classes of shares, each with a different combination of sales charges,
ongoing fees and other features. The Merrill Lynch Select Pricing(SM) System
permits an investor to choose the method of purchasing shares that the investor
believes is most beneficial given the amount of the purchase, the length of time
the investor expects to hold the shares and other relevant circumstances. See
"Merrill Lynch Select Pricing(SM) System" on page 4.
 
    Shares may be purchased directly from Merrill Lynch Funds Distributor, Inc.
(the "Distributor"), P.O. Box 9081, Princeton, New Jersey 08543-9081 [(609)
282-2800], or from securities dealers which have entered into selected dealer
agreements with the Distributor, including Merrill Lynch, Pierce, Fenner & Smith
Incorporated ("Merrill Lynch"). The minimum initial purchase is $1,000 and the
minimum subsequent purchase is $50. Merrill Lynch may charge its customers a
processing fee (presently $4.85) for confirming purchases and repurchases.
Purchases and redemptions directly through the Fund's transfer agent are not
subject to the processing fee. See "Purchase of Shares" and "Redemption of
Shares".
                           -------------------------
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
    EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
       SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
       COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
        PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
           OFFENSE.
                           -------------------------
 
   
    This Prospectus is a concise statement of information about the Fund that is
relevant to making an investment in the Fund. This Prospectus should be retained
for future reference. A statement containing additional information about the
Fund, dated October 29, 1996 (the "Statement of Additional Information"), has
been filed with the Securities and Exchange Commission (the "Commission") and is
available, without charge, by calling or by writing Merrill Lynch Multi-State
Municipal Series Trust (the "Trust") at the above telephone number or address.
The Statement of Additional Information is hereby incorporated by reference into
this Prospectus. The Fund is a separate series of the Trust, an open-end
management investment company organized as a Massachusetts business trust.
    
                           -------------------------
 
                        FUND ASSET MANAGEMENT -- MANAGER
              MERRILL LYNCH FUNDS DISTRIBUTOR, INC. -- DISTRIBUTOR
<PAGE>   4
 
                                   FEE TABLE
 
   
     A general comparison of the sales arrangements and other nonrecurring and
recurring expenses applicable to shares of the Fund follows:
    
 
   
<TABLE>
<CAPTION>
                                                         CLASS A(A)              CLASS B(B)              CLASS C     CLASS D
                                                         ----------    -------------------------------   --------    -------
<S>                                                      <C>           <C>                               <C>         <C>
SHAREHOLDER TRANSACTION EXPENSES:
  Maximum Sales Charge Imposed on Purchases (as a
    percentage of offering price).......................   4.00%(c)                 None                     None    4.00%(c)
  Sales Charge Imposed on Dividend Reinvestments........    None                    None                     None      None
  Deferred Sales Charge (as a percentage of original
    purchase price or redemption proceeds, whichever is
    lower)..............................................    None(d)      4.0% during the first year,     1.0% for      None(d)
                                                                          decreasing 1.0% annually         one
                                                                        thereafter to 0.0% after the     year(f)
                                                                                 fourth year
  Exchange Fee..........................................    None                   None(e)                   None      None
ANNUAL FUND OPERATING EXPENSES (AS A PERCENTAGE OF
  AVERAGE NET ASSETS):
  Management Fees(g)....................................   0.55%                    0.55%                   0.55%     0.55%
  Rule 12b-1 Fees(h)
    Account Maintenance Fees............................    None                    0.25%                   0.25%     0.10%
    Distribution Fees...................................    None                    0.25%                   0.35%      None
                                                                         (Class B shares convert to
                                                                        Class D shares automatically
                                                                        after approximately ten years
                                                                         and cease being subject to
                                                                          distribution fees and are
                                                                          subject to lower account
                                                                              maintenance fees)
  OTHER EXPENSES:
    Custodian Fees......................................   0.01%                    0.01%                   0.01%     0.01%
    Shareholder Servicing Costs(i)......................   0.07%                    0.08%                   0.09%     0.07%
    Miscellaneous.......................................   0.63%                    0.63%                   0.63%     0.63%
                                                          ------                     ---                      ---      ----
        Total Other Expenses............................   0.71%                    0.72%                   0.73%     0.71%
                                                          ------                     ---                      ---      ----
TOTAL FUND OPERATING EXPENSES+..........................   1.26%                    1.77%                   1.88%     1.36%
                                                          ------                     ---                      ---      ----
                                                          ------                     ---                      ---      ----
</TABLE>
    
 
   
- ---------------
    
 
   
(a) Class A shares are sold to a limited group of investors including existing
    Class A shareholders and certain participants in fee-based programs. See
    "Purchase of Shares--Initial Sales Charge Alternatives--Class A and Class D
    Shares"--page 23 and "Shareholder Services--Fee-Based Programs--page 34.
    
 
   
(b) Class B shares convert to Class D shares automatically approximately 10
    years after initial purchase. See "Purchase of Shares--Deferred Sales Charge
    Alternatives--Class B and Class C Shares"--page 24.
    
 
   
(c)  Reduced for purchases of $25,000 and over and waived for purchases of Class
     A shares in connection with certain fee-based programs. Class A and Class D
     purchases of $1,000,000 or more may not be subject to an initial sales
     charge. See "Purchase of Shares--Initial Sales Charge Alternatives--Class A
     and Class D Shares"--page 23.
    
 
   
(d) Class A and Class D shares are not subject to a contingent deferred sales
    charge ("CDSC"), except that purchases of $1,000,000 or more which are not
    subject to an initial sales charge may instead be subject to a CDSC of 1.0%
    of amounts redeemed within the first year after purchase. Such CDSC may be
    waived in connection with redemptions to fund participation in certain
    fee-based programs. See "Shareholder Services--Fee-Based Programs"--page 34.
    
 
   
(e)  The CDSC may be modified in connection with redemptions to fund
     participation in certain fee-based programs. See "Shareholder
     Services--Fee-Based Programs"--page 34.
    
 
   
(f) The CDSC may be waived in connection with redemptions to fund participation
    in certain fee-based programs. See "Shareholder Services-- Fee-Based
    Programs"--page 34.
    
 
   
(g)  See "Management of the Trust--Management and Advisory Arrangements"--page
     19.
    
 
   
(h) See "Purchase of Shares--Distribution Plans"--page 27.
    
 
   
(i) See "Management of the Trust--Transfer Agency Services"--page 20.
    
 
   
 + For the fiscal year ended July 31, 1996, Fund Asset Management, L.P., (the
   "Manager") voluntarily waived all of the management fees due from the Fund
   and voluntarily reimbursed the Fund for a portion of other expenses
   (excluding Rule 12b-1 fees). Total Fund Operating Expenses in the fee table
   above have been restated to assume the absence of any such waiver or
   reimbursement because the Manager may discontinue or reduce such waiver of
   fees and/or assumption of expenses at any time without notice. For the fiscal
   year ended July 31, 1996 the Manager waived management fees and reimbursed
   expenses totaling .89% for Class A shares, .89% for Class B shares, .88% for
   Class C shares and .89% for Class D shares after which the Fund's total
   expense ratio was .37% for Class A shares, .88% for Class B shares, 1.00% for
   Class C shares and .47% for Class D shares.
    
 
                                        2
<PAGE>   5
 
   
EXAMPLE:
    
 
   
<TABLE>
<CAPTION>
                                                                        CUMULATIVE EXPENSES PAID
                                                                           FOR THE PERIOD OF:
                                                                ----------------------------------------
                                                                1 YEAR    3 YEARS    5 YEARS    10 YEARS
                                                                ------    -------    -------    --------
<S>                                                             <C>       <C>        <C>        <C>
An investor would pay the following expenses on a $1,000
  investment including the maximum $40 initial sales charge
  (Class A and Class D shares only) and assuming (1) the
  Total Fund Operating Expenses for each class set forth on
  page 2, (2) a 5% annual return throughout the periods and
  (3) redemption at the end of the period:
     Class A.................................................    $ 52       $78       $ 106       $186
     Class B.................................................    $ 58       $76       $  96       $208*
     Class C.................................................    $ 29       $59       $ 102       $220
     Class D.................................................    $ 53       $81       $ 111       $197
An investor would pay the following expenses on the same
  $1,000 investment assuming no redemption at the end of the
  period:
     Class A.................................................    $ 52       $78       $ 106       $186
     Class B.................................................    $ 18       $56       $  96       $208*
     Class C.................................................    $ 19       $59       $ 102       $220
     Class D.................................................    $ 53       $81       $ 111       $197
</TABLE>
    
 
- ---------------
 
   
* Assumes conversion to Class D shares eight years after purchase.
    
 
   
     The foregoing Fee Table is intended to assist investors in understanding
the costs and expenses that a shareholder in the Fund will bear directly or
indirectly. The example set forth above assumes reinvestment of all dividends
and distributions and utilizes a 5% annual rate of return as mandated by
Commission regulations. THE EXAMPLE SHOULD NOT BE CONSIDERED A REPRESENTATION OF
PAST OR FUTURE EXPENSES OR ANNUAL RATES OF RETURN, AND ACTUAL EXPENSES OR ANNUAL
RATES OF RETURN MAY BE MORE OR LESS THAN THOSE ASSUMED FOR PURPOSES OF THE
EXAMPLE. Class B and Class C shareholders who hold their shares for an extended
period of time may pay more in Rule 12b-1 distribution fees than the economic
equivalent of the maximum front-end sales charges permitted under the Conduct
Rules of the National Association of Securities Dealers, Inc. (the "NASD").
Merrill Lynch may charge its customers a processing fee (presently $4.85) for
confirming purchases and repurchases. Purchases and redemptions directly through
the Fund's Transfer Agent are not subject to the processing fee. See "Purchase
of Shares" and "Redemption of Shares".
    
 
                                        3
<PAGE>   6
 
                    MERRILL LYNCH SELECT PRICING(SM) SYSTEM
 
   
     The Fund offers four classes of shares under the Merrill Lynch Select
Pricing(SM) System. The shares of each class may be purchased at a price equal
to the next determined net asset value per share subject to the sales charges
and ongoing fee arrangements described below. Shares of Class A and Class D are
sold to investors choosing the initial sales charge alternatives, and shares of
Class B and Class C are sold to investors choosing the deferred sales charge
alternatives. The Merrill Lynch Select Pricing(SM) System is used by more than
50 registered investment companies advised by Merrill Lynch Asset Management,
L.P. ("MLAM") or Fund Asset Management, L.P. ("FAM" or the "Manager"), an
affiliate of MLAM. Funds advised by MLAM or FAM which utilize the Merrill Lynch
Select Pricing(SM) System are referred to herein as "MLAM-advised mutual funds".
    
 
   
     Each Class A, Class B, Class C or Class D share of the Fund represents an
identical interest in the investment portfolio of the Fund and has the same
rights, except that Class B, Class C and Class D shares bear the expenses of the
ongoing account maintenance fees and Class B and Class C shares bear the
expenses of the ongoing distribution fees and the additional incremental
transfer agency costs resulting from the deferred sales charge arrangements. The
deferred sales charges, distribution and account maintenance fees that are
imposed on Class B and Class C shares, as well as the account maintenance fees
that are imposed on Class D shares, are imposed directly against those classes
and not against all assets of the Fund and, accordingly, such charges will not
affect the net asset value of any other class or have any impact on investors
choosing another sales charge option. Dividends paid by the Fund for each class
of shares will be calculated in the same manner at the same time and will differ
only to the extent that account maintenance and distribution fees and any
incremental transfer agency costs relating to a particular class are borne
exclusively by that class. Each class has different exchange privileges. See
"Shareholder Services--Exchange Privilege".
    
 
     Investors should understand that the purpose and function of the initial
sales charges with respect to the Class A and Class D shares are the same as
those of the deferred sales charges with respect to the Class B and Class C
shares in that the sales charges applicable to each class provide for the
financing of the distribution of the shares of the Fund. The
distribution-related revenues paid with respect to a class will not be used to
finance the distribution expenditures of another class. Sales personnel may
receive different compensation for selling different classes of shares.
 
     The following table sets forth a summary of the distribution arrangements
for each class of shares under the Merrill Lynch Select Pricing(SM) System,
followed by a more detailed description of each class and a discussion of the
factors that investors should consider in determining the method of purchasing
shares under
 
                                        4
<PAGE>   7
 
the Merrill Lynch Select Pricing(SM) System that the investor believes is most
beneficial under his particular circumstances. More detailed information as to
each class of shares is set forth under "Purchase of Shares".
   
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------
<C>      <S>                                    <C>            <C>             <C>
- -------------------------------------------------------------------------------------------------------
 
<CAPTION>
                                                  ACCOUNT
                                                MAINTENANCE    DISTRIBUTION
CLASS              SALES CHARGE(1)                  FEE            FEE            CONVERSION FEATURE
- -------------------------------------------------------------------------------------------------------
<C>      <S>                                    <C>            <C>             <C>
 A       Maximum 4.00% initial sales               No             No           No
           charge(2)(3)
- -------------------------------------------------------------------------------------------------------
 B       CDSC for a period of 4 years, at a      0.25%           0.25%         B shares convert to D
           rate of 4.0% during the first                                       shares
           year, decreasing 1.0% annually to                                   automatically after
           0.0%(4)                                                             approximately ten
                                                                               years(5)
- -------------------------------------------------------------------------------------------------------
 C       1.0% CDSC for one year(6)               0.25%           0.35%         No
- -------------------------------------------------------------------------------------------------------
 D       Maximum 4.00% initial sales             0.10%            No           No
           charge(3)
- -------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------
</TABLE>
    
 
- ---------------
(1) Initial sales charges are imposed at the time of purchase as a percentage of
    the offering price. CDSCs are imposed if the redemption occurs within the
    applicable CDSC time period. The charge will be assessed on an amount equal
    to the lesser of the proceeds of redemption or the cost of the shares being
    redeemed.
 
(2) Offered only to eligible investors. See "Purchase of Shares--Initial Sales
    Charge Alternatives--Class A and Class D Shares-- Eligible Class A
    Investors".
 
   
(3) Reduced for purchases of $25,000 or more and waived for purchases of Class A
    shares in connection with certain fee-based programs. Class A and Class D
    share purchases of $1,000,000 or more may not be subject to an initial sales
    charge but instead may be subject to a 1.0% CDSC if redeemed within one
    year. Such CDSC may be waived in connection with redemptions to fund
    participation in certain fee-based programs. See "Class A" and "Class D"
    below.
    
 
   
(4) The CDSC may be modified in connection with redemptions to fund
    participation in certain fee-based programs.
    
 
   
(5) The conversion period for dividend reinvestment shares and certain fee-based
    programs may be modified. Also, Class B shares of certain other MLAM-advised
    mutual funds into which exchanges may be made have an eight year conversion
    period. If Class B shares of the Fund are exchanged for Class B shares of
    another MLAM-advised mutual fund, the conversion period applicable to the
    Class B shares acquired in the exchange will apply, and the holding period
    for the shares exchanged will be tacked on to the holding period for the
    shares acquired.
    
 
   
(6) The CDSC may be waived in connection with redemptions to fund participation
    in certain fee-based programs.
    
 
   
Class A: Class A shares incur an initial sales charge when they are purchased
         and bear no ongoing distribution or account maintenance fees. Class A
         shares are offered to a limited group of investors and also will be
         issued upon reinvestment of dividends on outstanding Class A shares.
         Investors that currently own Class A shares of the Fund in a
         shareholder account are entitled to purchase additional Class A shares
         of the Fund in that account. Other eligible investors include
         participants in certain fee-based programs. In addition, Class A shares
         will be offered at net asset value to Merrill Lynch & Co., Inc.
         ("ML&Co.") and its subsidiaries (the term "subsidiaries", when used
         herein with respect to ML&Co. includes MLAM, the Manager and certain
         other entities directly or indirectly wholly-owned and controlled by
         ML&Co.), and their directors and employees, and to members of the
         Boards of MLAM-advised mutual funds. The maximum initial sales charge
         is 4.00%, which is reduced for purchases of $25,000 and over and waived
         for purchases of Class A shares in connection with certain fee-based
         programs. Purchases of $1,000,000 or more may not be subject to an
         initial sales charge but if the initial sales charge is waived, such
         purchases may be subject to a 1.0% CDSC if the shares are redeemed
         within one year after purchase. Such CDSC may be waived in connection
         with redemptions to fund participation in certain fee-based programs.
         Sales charges also are reduced under a right of accumulation which
         takes into account the investor's holdings of all classes of all
    
 
                                        5
<PAGE>   8
 
         MLAM-advised mutual funds. See "Purchase of Shares--Initial Sales
         Charge Alternatives-- Class A and Class D Shares".
 
   
Class B: Class B shares do not incur a sales charge when they are purchased, but
         they are subject to an ongoing account maintenance fee of 0.25% and an
         ongoing distribution fee of 0.25% of the Fund's average net assets
         attributable to Class B shares, as well as a CDSC if they are redeemed
         within four years of purchase. Such CDSC may be modified in connection
         with redemptions to fund participation in certain fee-based programs.
         Approximately ten years after issuance, Class B shares will convert
         automatically into Class D shares of the Fund, which are subject to a
         lower account maintenance fee of 0.10% and no distribution fee; Class B
         shares of certain other MLAM-advised mutual funds into which exchanges
         may be made convert into Class D shares automatically after
         approximately eight years. If Class B shares of the Fund are exchanged
         for Class B shares of another MLAM-advised mutual fund, the conversion
         period applicable to the Class B shares acquired in the exchange will
         apply, as will the Class D account maintenance fee of the acquired fund
         upon the conversion, and the holding period for the shares exchanged
         will be tacked on to the holding period for the shares acquired.
         Automatic conversion of Class B shares into Class D shares will occur
         at least once each month on the basis of the relative net asset values
         of the shares of the two classes on the conversion date, without the
         imposition of any sales load, fee or other charge. Conversion of Class
         B shares to Class D shares will not be deemed a purchase or sale of the
         shares for Federal income tax purposes. Shares purchased through
         reinvestment of dividends on Class B shares also will convert
         automatically to Class D shares. The conversion period for dividend
         reinvestment shares is modified as described under "Purchase of
         Shares--Deferred Sales Charge Alternatives--Class B and Class C
         Shares--Conversion of Class B Shares to Class D Shares".
    
 
   
Class C: Class C shares do not incur a sales charge when they are purchased, but
         they are subject to an ongoing account maintenance fee of 0.25% and an
         ongoing distribution fee of 0.35% of the Fund's average net assets
         attributable to Class C shares. Class C shares are also subject to a
         CDSC of 1.0% if they are redeemed within one year of purchase. Such
         CDSC may be waived in connection with redemptions to fund participation
         in certain fee-based programs. Although Class C shares are subject to a
         CDSC for only one year (as compared to four years for Class B), Class C
         shares have no conversion feature and, accordingly, an investor that
         purchases Class C shares will be subject to account maintenance fees
         and higher distribution fees that will be imposed on Class C shares for
         an indefinite period subject to annual approval by the Trust's Board of
         Trustees and regulatory limitations.
    
 
   
Class D: Class D shares incur an initial sales charge when they are purchased
         and are subject to an ongoing account maintenance fee of 0.10% of the
         Fund's average net assets attributable to Class D shares. Class D
         shares are not subject to an ongoing distribution fee or any CDSC when
         they are redeemed. Purchases of $1,000,000 or more may not be subject
         to an initial sales charge but if the initial sales charge is waived
         such purchases may be subject to a CDSC of 1.0% if the shares are
         redeemed within one year after purchase. Such CDSC may be waived in
         connection with redemptions to fund participation in certain fee-based
         programs. The schedule of initial sales charges and reductions for the
         Class D shares is the same as the schedule for Class A shares, except
         that there is no waiver for purchases of Class D shares in connection
         with certain fee-based programs. Class D shares also will be issued
         upon conversion of Class B shares as described above under "Class B".
         See "Purchase of Shares--Initial Sales Charge Alternatives--Class A and
         Class D Shares".
    
 
                                        6
<PAGE>   9
 
     The following is a discussion of the factors that investors should consider
in determining the method of purchasing shares under the Merrill Lynch Select
Pricing(SM) System that the investor believes is most beneficial under his
particular circumstances.
 
   
     Initial Sales Charge Alternatives.  Investors who prefer an initial sales
charge alternative may elect to purchase Class D shares or, if an eligible
investor, Class A shares. Investors choosing the initial sales charge
alternative who are eligible to purchase Class A shares should purchase Class A
shares rather than Class D shares because there is an account maintenance fee
imposed on Class D shares. Investors qualifying for significantly reduced
initial sales charges may find the initial sales charge alternative particularly
attractive because similar sales charge reductions are not available with
respect to the CDSCs imposed in connection with purchases of Class B or Class C
shares. Investors not qualifying for reduced initial sales charges who expect to
maintain their investment for an extended period of time also may elect to
purchase Class A or Class D shares, because over time the accumulated ongoing
account maintenance and distribution fees on Class B or Class C shares may
exceed the initial sales charge and, in the case of Class D shares, the account
maintenance fee. Although some investors that previously purchased Class A
shares may no longer be eligible to purchase Class A shares of other
MLAM-advised mutual funds, those previously purchased Class A shares, together
with Class B, Class C and Class D share holdings, will count toward a right of
accumulation which may qualify the investor for reduced initial sales charges on
new initial sales charge purchases. In addition, the ongoing Class B and Class C
account maintenance and distribution fees will cause Class B and Class C shares
to have higher expense ratios, pay lower dividends and have lower total returns
than the initial sales charge shares. The ongoing Class D account maintenance
fees will cause Class D shares to have a higher expense ratio, pay lower
dividends and have a lower total return than Class A shares.
    
 
     Deferred Sales Charge Alternatives.  Because no initial sales charges are
deducted at the time of purchase, Class B and Class C shares provide the benefit
of putting all of the investor's dollars to work from the time the investment is
made. The deferred sales charge alternatives may be particularly appealing to
investors who do not qualify for a reduction in initial sales charges. Both
Class B and Class C shares are subject to ongoing account maintenance fees and
distribution fees; however, the ongoing account maintenance and distribution
fees potentially may be offset to the extent any return is realized on the
additional funds initially invested in Class B or Class C shares. In addition,
Class B shares will be converted into Class D shares of the Fund after a
conversion period of approximately ten years, and thereafter investors will be
subject to lower ongoing fees.
 
     Certain investors may elect to purchase Class B shares if they determine it
to be most advantageous to have all their funds invested initially and intend to
hold their shares for an extended period of time. Investors in Class B shares
should take into account whether they intend to redeem their shares within the
CDSC period and, if not, whether they intend to remain invested until the end of
the conversion period and thereby take advantage of the reduction in ongoing
fees resulting from the conversion into Class D shares. Other investors,
however, may elect to purchase Class C shares if they determine that it is
advantageous to have all their assets invested initially and they are uncertain
as to the length of time they intend to hold their assets in MLAM-advised mutual
funds. Although Class C shareholders are subject to a shorter CDSC period at a
lower rate, they are subject to higher distribution fees and forgo the Class B
conversion feature, making their investment subject to account maintenance and
distribution fees for an indefinite period of time. In addition, while both
Class B and Class C distribution fees are subject to the limitations on
asset-based sales charges imposed by the NASD, the Class B distribution fees are
further limited under a voluntary waiver of asset-based sales charges. See
"Purchase of Shares--Limitations on the Payment of Deferred Sales Charges".
 
                                        7
<PAGE>   10
 
                              FINANCIAL HIGHLIGHTS
 
   
    The financial information in the table below has been audited in connection
with the annual audits of the financial statements of the Fund by Deloitte &
Touche LLP, independent auditors. Financial statements for the year ended July
31, 1996 and the independent auditors' report thereon are included in the
Statement of Additional Information. The following per share data and ratios
have been derived from information provided in the Fund's audited financial
statements. Further information about the performance of the Fund is contained
in the Fund's most recent annual report to shareholders which may be obtained,
without charge, by calling or by writing the Trust at the telephone number or
address on the front cover of this Prospectus.
    
   
<TABLE>
<CAPTION>
                                         CLASS A                                   CLASS B                     CLASS C
                         ----------------------------------------  ----------------------------------------  ------------
                                                   FOR THE PERIOD                            FOR THE PERIOD
                                                    OCTOBER 29,                               OCTOBER 29,    FOR THE YEAR
                               FOR THE YEAR            1993+             FOR THE YEAR            1993+        ENDED JULY
                              ENDED JULY 31,        TO JULY 31,         ENDED JULY 31,        TO JULY 31,        31,
                         ------------------------  --------------  ------------------------  --------------  ------------
                            1996         1995           1994          1996         1995           1994           1996
                         -----------  -----------  --------------  -----------  -----------  --------------  ------------
<S>                      <C>          <C>          <C>             <C>          <C>          <C>             <C>
INCREASE (DECREASE) IN
 NET ASSET VALUE:
PER SHARE OPERATING
 PERFORMANCE:
Net asset value,
 beginning of period....   $  9.15      $  9.20       $  10.00       $  9.16      $  9.20       $  10.00       $   9.16
                            ------       ------         ------       -------      -------        -------          -----
 Investment
   income--net..........       .47          .52            .37           .42          .47            .33            .41
 Realized and unrealized
   gain (loss) on
   investments--net.....       .06         (.05)          (.80)          .05         (.04)          (.80)           .06
                            ------       ------         ------       -------      -------        -------          -----
Total from investment
 operations.............       .53          .47           (.43)          .47          .43           (.47)           .47
                            ------       ------         ------       -------      -------        -------          -----
Less dividends from
 investment
 income--net............      (.47)        (.52)          (.37)         (.42)        (.47)          (.33)          (.41)
                            ------       ------         ------       -------      -------        -------          -----
Net asset value, end of
 period.................   $  9.21      $  9.15       $   9.20       $  9.21      $  9.16       $   9.20       $   9.22
                            ======       ======         ======       =======      =======        =======          =====
TOTAL INVESTMENT
 RETURN:**
Based on net asset value
 per share..............      5.85%        5.39%         (4.32)%#       5.19%        4.96%         (4.68)%#        5.18%
                            ======       ======         ======       =======      =======        =======          =====
RATIOS TO AVERAGE NET
 ASSETS:
Expenses, net of
 reimbursement..........       .37%         .13%           .03%*         .88%         .65%           .53%*         1.00%
                            ======       ======         ======       =======      =======        =======          =====
Expenses................      1.26%        1.57%          1.76%*        1.77%        2.08%          2.27%*         1.88%
                            ======       ======         ======       =======      =======        =======          =====
Investment
 income--net............      5.04%        5.80%          5.30%*        4.52%        5.29%          4.74%*         4.39%
                            ======       ======         ======       =======      =======        =======          =====
SUPPLEMENTAL DATA:
Net assets, end of
 period (in
 thousands).............   $ 1,252      $ 1,362       $  1,589       $22,053      $18,371       $ 14,484       $  2,229
                            ======       ======         ======       =======      =======        =======          =====
Portfolio turnover......     81.87%       73.99%         29.40%        81.87%       73.99%         29.40%         81.87%
                            ======       ======         ======       =======      =======        =======          =====
 
<CAPTION>
                                                    CLASS D
                                          ----------------------------
                          FOR THE PERIOD                FOR THE PERIOD
                           OCTOBER 21,    FOR THE YEAR   OCTOBER 21,
                              1994+        ENDED JULY       1994+
                           TO JULY 31,        31,        TO JULY 31,
                          --------------  ------------  --------------
                               1995           1996           1995
                          --------------  ------------  --------------
<S>                      <C>              <C>           <C>
INCREASE (DECREASE) IN
 NET ASSET VALUE:
PER SHARE OPERATING
 PERFORMANCE:
Net asset value,
 beginning of period....     $   8.79       $   9.16       $   8.79
                               ------          -----          -----
 Investment
   income--net..........          .36            .46            .40
 Realized and unrealized
   gain (loss) on
   investments--net.....          .37            .05            .37
                               ------          -----          -----
Total from investment
 operations.............          .73            .51            .77
                               ------          -----          -----
Less dividends from
 investment
 income--net............         (.36)          (.46)          (.40)
                               ------          -----          -----
Net asset value, end of
 period.................     $   9.16       $   9.21       $   9.16
                               ======          =====          =====
TOTAL INVESTMENT
 RETURN:**
Based on net asset value
 per share..............         8.51%#         5.63%          8.94%#
                               ======          =====          =====
RATIOS TO AVERAGE NET
 ASSETS:
Expenses, net of
 reimbursement..........          .82%*          .47%           .31%*
                               ======          =====          =====
Expenses................         2.08%*         1.36%          1.55%*
                               ======          =====          =====
Investment
 income--net............         5.08%*         4.91%          5.57%*
                               ======          =====          =====
SUPPLEMENTAL DATA:
Net assets, end of
 period (in
 thousands).............     $  1,013       $    647       $    517
                               ======          =====          =====
Portfolio turnover......        73.99%         81.87%         73.99%
                               ======          =====          =====
</TABLE>
    
 
- ---------------
 
 + Commencement of operations.
 * Annualized.
** Total investment returns exclude the effects of sales loads.
 # Aggregate total investment return.
 
                                        8
<PAGE>   11
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
     The investment objective of the Fund is to provide shareholders with as
high a level of income exempt from Federal and Maryland income taxes as is
consistent with prudent investment management. The Fund seeks to achieve its
objective while providing investors with the opportunity to invest in a
portfolio of securities consisting primarily of long-term obligations issued by
or on behalf of the State of Maryland, its political subdivisions, agencies and
instrumentalities and obligations of other qualifying issuers, such as issuers
located in Puerto Rico, the Virgin Islands and Guam, which pay interest exempt,
in the opinion of bond counsel to the issuer, from Federal and Maryland income
taxes. Obligations exempt from Federal income taxes are referred to herein as
"Municipal Bonds" and obligations exempt from both Federal and Maryland income
taxes are referred to as "Maryland Municipal Bonds". Unless otherwise indicated,
references to Municipal Bonds shall be deemed to include Maryland Municipal
Bonds. The Fund at all times, except during temporary defensive periods, will
maintain at least 65% of its total assets invested in Maryland Municipal Bonds.
The investment objective of the Fund as set forth in the first sentence of this
paragraph is a fundamental policy and may not be changed without shareholder
approval. At times, the Fund may seek to hedge its portfolio through the use of
futures transactions to reduce volatility in the net asset value of Fund shares.
 
   
     Municipal Bonds may include several types of bonds. The Fund may also
invest in variable rate demand obligations ("VRDOs"). The interest on Municipal
Bonds may bear a fixed rate or be payable at a variable or floating rate. At
least 80% of the Municipal Bonds purchased by the Fund primarily will be what
are commonly referred to as "investment grade" securities, which are obligations
rated at the time of purchase within the four highest quality ratings as
determined by either Moody's Investors Service, Inc. ("Moody's") (currently Aaa,
Aa, A and Baa), Standard & Poor's Ratings Group ("Standard & Poor's") (currently
AAA, AA, A and BBB) or Fitch Investors Service, Inc. ("Fitch") (currently AAA,
AA, A and BBB). If Municipal Bonds are unrated, such securities will possess
creditworthiness comparable, in the opinion of the Manager, to obligations in
which the Fund may invest. Municipal Bonds rated in the fourth highest rating
category, while considered "investment grade", have certain speculative
characteristics and are more likely to be downgraded to non-investment grade
than obligations rated in one of the top three rating categories. See Appendix
II-- "Ratings of Municipal Bonds" in the Statement of Additional Information for
more information regarding ratings of debt securities. An issue of rated
Municipal Bonds may cease to be rated or its rating may be reduced below
"investment grade" subsequent to its purchase by the Fund. If an obligation is
downgraded below investment grade, the Manager will consider factors such as
price, credit risk, market conditions, financial condition of the issuer and
interest rates to determine whether to continue to hold the obligation in the
Fund's portfolio.
    
 
   
     The Fund may invest up to 20% of its total assets in Municipal Bonds that
are rated below Baa by Moody's or below BBB by Standard & Poor's or Fitch, or
which in the Manager's judgment, possess similar credit characteristics. Such
securities, sometimes referred to as "high yield" or "junk" bonds, are
predominantly speculative with respect to the capacity to pay interest and repay
principal in accordance with the terms of the security and generally involve a
greater volatility of price than securities in higher rating categories. The
market prices of high-yielding, lower-rated securities may fluctuate more than
higher-rated securities and may decline significantly in periods of general
economic difficulty, which may follow periods of rising interest rates. In
purchasing such securities, the Fund will rely on the Manager's judgment,
analysis and experience in evaluating the creditworthiness of the issuer of such
securities. The Manager will take into consideration, among other things, the
issuer's financial resources, its sensitivity to economic conditions and trends,
its
    
 
                                        9
<PAGE>   12
 
   
operating history, the quality of its management and regulatory matters. See
"Investment Objective and Policies" in the Statement of Additional Information
for a more detailed discussion of the pertinent risk factors involved in
investing in "high yield" or "junk" bonds and Appendix II--"Ratings of Municipal
Bonds" in the Statement of Additional Information for additional information
regarding ratings of debt securities. The Fund does not intend to purchase debt
securities that are in default or which the Manager believes will be in default.
    
 
     Certain Municipal Bonds may be entitled to the benefits of letters of
credit or similar credit enhancements issued by financial institutions. In such
instances, the Trustees and the Manager will take into account in assessing the
quality of such bonds not only the creditworthiness of the issuer of such bonds
but also the creditworthiness of the financial institution.
 
     The Fund's investments may also include VRDOs and VRDOs in the form of
participation interests ("Participating VRDOs") in variable rate tax-exempt
obligations held by a financial institution. The VRDOs in which the Fund will
invest are tax-exempt obligations which contain a floating or variable interest
rate adjustment formula and an unconditional right of demand on the part of the
holder thereof to receive payment of the unpaid principal balance plus accrued
interest on a short notice period not to exceed seven days. Participating VRDOs
provide the Fund with a specified undivided interest (up to 100%) of the
underlying obligation and the right to demand payment of the unpaid principal
balance plus accrued interest on the Participating VRDOs from the financial
institution on a specified number of days' notice, not to exceed seven days.
There is, however, the possibility that because of a default or insolvency, the
demand feature of VRDOs or Participating VRDOs may not be honored. The Fund has
been advised by its counsel that the Fund should be entitled to treat the income
received on Participating VRDOs as interest from tax-exempt obligations.
 
     VRDOs that contain an unconditional right of demand to receive payment of
the unpaid principal balance plus accrued interest on a notice period exceeding
seven days may be deemed illiquid securities. A VRDO with a demand notice period
exceeding seven days will therefore be subject to the Fund's restriction on
illiquid investments unless, in the judgment of the Trustees, such VRDO is
liquid. The Trustees may adopt guidelines and delegate to the Manager the daily
function of determining and monitoring liquidity of such VRDOs. The Trustees,
however, will retain sufficient oversight and be ultimately responsible for such
determinations.
 
     The Fund ordinarily does not intend to realize investment income not exempt
from Federal and Maryland income taxes. However, to the extent that suitable
Maryland Municipal Bonds are not available for investment by the Fund, the Fund
may purchase Municipal Bonds issued by other states, their agencies and
instrumentalities, the interest income on which is exempt, in the opinion of
bond counsel, from Federal, but not Maryland, taxation. The Fund also may invest
in securities not issued by or on behalf of a state or territory or by an agency
or instrumentality thereof, if the Fund nevertheless believes such securities to
be exempt from Federal income taxation ("Non-Municipal Tax-Exempt Securities").
Non-Municipal Tax-Exempt Securities may include securities issued by other
investment companies that invest in municipal bonds, to the extent such
investments are permitted by the Investment Company Act of 1940, as amended (the
"1940 Act"). Other Non-Municipal Tax-Exempt Securities could include trust
certificates or other instruments evidencing interests in one or more long-term
municipal securities.
 
     Under normal circumstances, except when acceptable securities are
unavailable as determined by the Manager, the Fund will invest at least 65% of
its total assets in Maryland Municipal Bonds. For temporary
 
                                       10
<PAGE>   13
 
   
defensive periods or to provide liquidity, the Fund has the authority to invest
as much as 35% of its total assets in tax-exempt or taxable money market
obligations with a maturity of one year or less (such short-term obligations
being referred to herein as "Temporary Investments"), except that taxable
Temporary Investments shall not exceed 20% of the Fund's net assets. The
Temporary Investments, VRDOs and Participating VRDOs in which the Fund may
invest also will be in the following rating categories at the time of purchase:
MIG-1/VMIG-1 through MIG-4/VMIG-4 for notes and VRDOs and Prime-1 through
Prime-3 for commercial paper (as determined by Moody's), SP-1 through SP-2 for
notes and A-1 through A-3 for VRDOs and commercial paper (as determined by
Standard & Poor's), or F-1 through F-3 for notes, VRDOs and commercial paper (as
determined by Fitch) or, if unrated, of comparable quality in the opinion of the
Manager. The Fund at all times will have at least 80% of its net assets invested
in securities the interest on which is exempt from Federal taxation. However,
interest received on certain otherwise tax-exempt securities which are
classified as "private activity bonds" (in general, bonds that benefit
non-governmental entities), may be subject to a Federal alternative minimum tax.
The percentage of the Fund's net assets invested in "private activity bonds"
will vary during the year. See "Distributions and Taxes". In addition, the Fund
reserves the right to invest temporarily a greater portion of its assets in
Temporary Investments for defensive purposes, when, in the judgment of the
Manager, market conditions warrant. The investment objective of the Fund is a
fundamental policy of the Fund which may not be changed without a vote of a
majority of the outstanding shares of the Fund. The Fund's hedging strategies,
which are described in more detail under "Financial Futures Transactions and
Options", are not fundamental policies and may be modified by the Trustees of
the Trust without the approval of the Fund's shareholders.
    
 
POTENTIAL BENEFITS
 
     Investment in shares of the Fund offers several benefits. The Fund offers
investors the opportunity to receive income exempt from Federal and Maryland
income taxes by investing in a professionally managed portfolio consisting
primarily of long-term Maryland Municipal Bonds. The Fund also provides
liquidity because of its redemption features and relieves the investor of the
burdensome administrative details involved in managing a portfolio of tax-exempt
securities. The benefits of investing in the Fund are at least partially offset
by the expenses involved in operating an investment company. Such expenses
primarily consist of the management fee and operational costs, and in the case
of certain classes of shares, the account maintenance and distribution costs.
 
SPECIAL AND RISK CONSIDERATIONS RELATING TO MUNICIPAL BONDS
 
     The risks and special considerations involved in investments in Municipal
Bonds vary with the types of instruments being acquired. Investments in
Non-Municipal Tax-Exempt Securities may present similar risks, depending on the
particular product. Certain instruments in which the Fund may invest may be
characterized as derivative instruments. See "Description of Municipal Bonds"
and "Financial Futures Transactions and Options".
 
     Moreover, the Fund ordinarily will invest at least 65% of its total assets
in Maryland Municipal Bonds, and therefore it is more susceptible to factors
adversely affecting issuers of Maryland Municipal Bonds than is a tax-exempt
mutual fund that is not concentrated in issuers of Maryland Municipal Bonds to
this degree. After enjoying rapid economic growth in the 1980's, Maryland has
experienced declining rates of growth in the
 
                                       11
<PAGE>   14
 
1990's. Despite this trend, per capita income for residents of Maryland exceeds
per capita income in the United States.
 
   
     On June 30, 1994, the State of Maryland's General Fund, representing
approximately 55% of each year's total budget, had a surplus on a budgetary
basis of $60 million in the Revenue Stabilization Account of the State Reserve
Fund. On June 30, 1995, the General Fund contained a surplus on a budgetary
basis of $26.5 million (after reservation of $106 million for fiscal year 1996
expenses) and the Revenue Stabilization Account of the State Reserve Fund
contained $286.1 million. In April 1995 the State's General Assembly approved a
$14.4 billion budget for fiscal year 1996, which budget did not include any
expenditures based upon additional revenue from new or broad-based taxes, but
included a $270 million appropriation to the State Reserve Fund, including $200
million to the Revenue Stabilization Account. When the fiscal year 1996 budget
was enacted, the State projected that it would end the fiscal year with a
General Fund surplus of $3.1 million. In December 1995 and March 1996 the State
lowered its estimates of General Fund revenues by a total of $148 million. To
address this reduction in revenues the State, among other things, reduced
General Fund appropriations and transferred $57 million from the Revenue
Stabilization Account. The balance in the Revenue Stabilization Account on June
30, 1996, taking into account this transfer, was $461.0 million. In April 1996
the General Assembly of the State approved a $14.6 billion budget for fiscal
year 1997, which budget includes funds sufficient to meet all fiscal year 1996
deficiencies and to meet all specific statutory funding requirements. The State
projects that, at June 30, 1997 the General Fund surplus on a budgetary basis
will be $12.9 million and that there will be $487 million in the Revenue
Stabilization Account of the State Reserve Fund. The Manager does not believe
that the current economic conditions in Maryland will have a significant adverse
effect on the Fund's ability to invest in high quality Maryland Municipal Bonds.
Because the Fund's portfolio will be comprised primarily of investment grade
securities, the Fund is expected to be less subject to market and credit risks
than a fund that invests primarily in lower quality Maryland Municipal Bonds.
See Appendix I--"Economic and Financial Conditions in Maryland" in the Statement
of Additional Information.
    
 
DESCRIPTION OF MUNICIPAL BONDS
 
   
     Municipal Bonds include debt obligations issued to obtain funds for various
public purposes, including construction and equipping of a wide range of public
facilities (including water, sewer, gas, electricity, solid waste, health care,
transportation, education and housing facilities), refunding of outstanding
obligations and obtaining funds for general operating expenses and loans to
other public institutions and facilities. In addition, certain types of bonds
are issued by or on behalf of public authorities to finance various privately
operated facilities, including certain facilities for the local furnishing of
electric energy or gas, sewage facilities, solid waste disposal facilities and
other specialized facilities. For purposes of this Prospectus, such obligations
are referred to as Municipal Bonds if the interest paid thereon is excluded from
gross income for purposes of Federal income taxation and, as Maryland Municipal
Bonds if the interest thereon is exempt from Federal and Maryland income taxes,
even though such bonds may be "private activity bonds" as discussed below.
    
 
   
     The two principal classifications of Municipal Bonds are "general
obligation" and "revenue" bonds which latter category includes industrial
development bonds ("IDBs") and, for bonds issued after August 15, 1986, private
activity bonds. General obligation bonds are secured by the issuer's pledge of
its faith, credit and taxing power for the payment of principal and interest.
The taxing power of any governmental entity may be limited, however, by
provisions of its state constitution or laws, and an entity's creditworthiness
will depend on many
    
 
                                       12
<PAGE>   15
 
factors, including potential erosion of its tax base due to population declines,
natural disasters, declines in the state's industrial base or inability to
attract new industries, economic limits on the ability to tax without eroding
the tax base, state legislative proposals or voter initiatives to limit ad
valorem real property taxes and the extent to which the entity relies on Federal
or state aid, access to capital markets or other factors beyond the state or
entity's control. Accordingly, the capacity of the issuer of a general
obligation bond as to the timely payment of interest and the repayment of
principal when due is affected by the issuer's maintenance of its tax base.
 
   
     Revenue 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 tax or other specific revenue source such as payments from the
user of the facility being financed; accordingly, the timely payment of interest
and the repayment of principal in accordance with the terms of the revenue or
special obligation bond is a function of the economic viability of such facility
or such revenue source. The Fund will not invest in revenue bonds where the
entity supplying the revenues from which the issuer is paid, including
predecessors, has a record of less than three years of continuous business
operations if such investments, together with investments in other unseasoned
issuers, would exceed 5% of the Fund's total assets. Investments involving
entities with less than three years of continuous business operations may pose
somewhat greater risks due to the lack of a substantial operating history for
such entities. The Manager believes, however, that the potential benefits of
such investments outweigh the potential risks, particularly given the Fund's
limitations on such investments.
    
 
   
     The Fund may purchase IDBs and private activity bonds. IDBs and private
activity bonds are, in most cases, tax-exempt securities issued by states,
municipalities or public authorities to provide funds, usually through a loan or
lease arrangement, to a private entity for the purpose of financing construction
or improvement of a facility to be used by the entity. Such bonds are secured
primarily by revenues derived from loan repayments or lease payments due from
the entity which may or may not be guaranteed by a parent company or otherwise
secured. IDBs and private activity bonds are generally not secured by a pledge
of the taxing power of the issuer of such bonds. Therefore, an investor should
be aware that repayment of such bonds generally depends on the revenues of a
private entity and be aware of the risks that such an investment may entail.
Continued ability of an entity to generate sufficient revenues for the payment
of principal and interest on such bonds will be affected by many factors
including the size of the entity, capital structure, demand for its products or
services, competition, general economic conditions, governmental regulation and
the entity's dependence on revenues for the operation of the particular facility
being financed. The Fund may also invest in so-called "moral obligation" bonds,
which are normally issued by special purpose authorities. If an issuer of moral
obligation bonds is unable to meet its obligations, repayment of such bonds
becomes a moral commitment, but not a legal obligation of the state or
municipality in question.
    
 
     The Fund may invest in Municipal Bonds (and Non-Municipal Tax-Exempt
Securities) the return on which is based on a particular index of value or
interest rates. For example, the Fund may invest in Municipal Bonds that pay
interest based on an index of Municipal Bond interest rates or based on the
value of gold or some other commodity. The principal amount payable upon
maturity of certain Municipal Bonds also may be based on the value of an index.
To the extent the Fund invests in these types of Municipal Bonds, the Fund's
return on such Municipal Bonds will be subject to risk with respect to the value
of the particular index. Interest and principal payable on the Municipal Bonds
may also be based on relative changes among particular indices. Also, the Fund
may invest in so-called "inverse floating obligations" or "residual interest
bonds" on which the interest rates typically decline as market rates increase
and increase as market rates decline. The
 
                                       13
<PAGE>   16
 
   
Fund's return on such types of Municipal Bonds (and Non-Municipal Tax-Exempt
Securities) will be subject to risk with respect to the value of the particular
index, which may include reduced or eliminated interest payments and losses of
invested principal. Such securities have the effect of providing a degree of
investment leverage, since they may increase or decrease in value in response to
changes, as an illustration, in market interest rates at a rate which is a
multiple (typically two) of the rate at which fixed-rate long-term tax-exempt
securities increase or decrease in response to such changes. As a result, the
market values of such securities will generally be more volatile than the market
values of fixed-rate tax-exempt securities. To seek to limit the volatility of
these securities, the Fund may purchase inverse floating obligations with
shorter-term maturities or which contain limitations on the extent to which the
interest rate may vary. Certain investments in such obligations may be illiquid.
The Fund may not invest in such illiquid obligations if such investments,
together with other illiquid investments, would exceed 15% of the Fund's total
assets. The Manager believes, however, that indexed and inverse floating
obligations represent flexible portfolio management instruments for the Fund
which allow the Fund to seek potential investment rewards, hedge other portfolio
positions or to vary the degree of investment leverage relatively efficiently
under different market conditions.
    
 
   
     Also included within the general category of Municipal Bonds are
participation certificates issued by government authorities or entities to
finance the acquisition or construction of equipment, land and/or facilities.
The certificates represent participations in a lease, an installment purchase
contract or a conditional sales contract (hereinafter collectively called "lease
obligations") relating to such equipment, land or facilities. Although lease
obligations do not constitute general obligations of the issuer for which the
issuer's unlimited taxing power is pledged, a lease obligation frequently is
backed by the issuer's covenant to budget for, appropriate and make the payments
due under the lease obligation. However, certain lease obligations contain
"non-appropriation" clauses which provide that the issuer has no obligation to
make lease or installment purchase payments in future years unless money is
appropriated for such purpose on a yearly basis. Although "non-appropriation"
lease obligations are secured by the leased property, disposition of the
property in the event of foreclosure might prove difficult. These securities
represent a type of financing that has not yet developed the depth of
marketability associated with more conventional securities. Certain investments
in lease obligations may be illiquid. The Fund may not invest in illiquid lease
obligations if such investments, together with other illiquid investments, would
exceed 15% of the Fund's total assets. The Fund may, however, invest without
regard to such limitation in lease obligations which the Manager, pursuant to
guidelines which have been adopted by the Board of Trustees and subject to the
supervision of the Board, determines to be liquid. The Manager will deem lease
obligations liquid if they are publicly offered and have received an investment
grade rating of Baa or better by Moody's, or BBB or better by Standard & Poor's
or Fitch. Unrated lease obligations, or those rated below investment grade, will
be considered liquid if the obligations come to the market through an
underwritten public offering and at least two dealers are willing to give
competitive bids. In reference to obligations rated below investment grade, the
Manager must, among other things, also review the creditworthiness of the state
or political subdivision obligated to make payment under the lease obligation
and make certain specified determinations based on such factors as the existence
of a rating or credit enhancement (such as insurance), the frequency of trades
or quotes for the obligation and the willingness of dealers to make a market in
the obligation.
    
 
   
     The value of bonds and other fixed-income obligations may fall when
interest rates rise and rise when interest rates fall. In general, bonds and
other fixed-income obligations with longer maturities will be subject to greater
volatility resulting from interest rate fluctuations than will similar
obligations with shorter
    
 
                                       14
<PAGE>   17
 
   
maturities. Under normal conditions, it is generally anticipated that the Fund's
average weighted maturity would be in excess of ten years.
    
 
     Federal tax legislation has limited the types and volume of bonds the
interest on which qualifies for a Federal income tax exemption. As a result,
this legislation and legislation which may be enacted in the future may affect
the availability of Municipal Bonds for investment by the Fund.
 
CALL RIGHTS
 
   
     The Fund may purchase a Municipal Bond issuer's right to call all or a
portion of such Municipal Bond for mandatory tender for purchase (a "Call
Right"). A holder of a Call Right may exercise such right to require a mandatory
tender for the purchase of related Municipal Bonds, subject to certain
conditions. A Call Right that is not exercised prior to the maturity of the
related Municipal Bond will expire without value. The economic effect of holding
both the Call Right and the related Municipal Bond is identical to that of
holding a Municipal Bond as a non-callable security. Certain investments in such
obligations may be illiquid. The Fund may not invest in such illiquid
obligations if such investments, together with other illiquid investments, would
exceed 15% of the Fund's total assets.
    
 
WHEN-ISSUED SECURITIES AND DELAYED DELIVERY TRANSACTIONS
 
   
     The Fund may purchase or sell Municipal Bonds on a delayed delivery basis
or a when-issued basis at fixed purchase terms. These transactions arise when
securities are purchased or sold by the Fund with payment and delivery taking
place in the future. The purchase will be recorded on the date the Fund enters
into the commitment and the value of the obligation will thereafter be reflected
in the calculation of the Fund's net asset value. The value of the obligation on
the delivery date may be more or less than its purchase price. A separate
account of the Fund will be established with its custodian consisting of cash,
cash equivalents or liquid securities having a market value at all times at
least equal to the amount of the forward commitment.
    
 
FINANCIAL FUTURES TRANSACTIONS AND OPTIONS
 
     The Fund is authorized to purchase and sell certain exchange traded
financial futures contracts ("financial futures contracts") solely for the
purpose of hedging its investments in Municipal Bonds against declines in value
and to hedge against increases in the cost of securities it intends to purchase.
However, any transactions involving financial futures or options (including puts
and calls associated therewith) will be in accordance with the Fund's investment
policies and limitations. A financial futures contract obligates the seller of a
contract to deliver and the purchaser of a contract to take delivery of the type
of financial instrument covered by the contract, or in the case of index-based
futures contracts to make and accept a cash settlement, at a specific future
time for a specified price. A sale of financial futures contracts may provide a
hedge against a decline in the value of portfolio securities because such
depreciation may be offset, in whole or in part, by an increase in the value of
the position in the financial futures contracts. A purchase of financial futures
contracts may provide a hedge against an increase in the cost of securities
intended to be purchased, because such appreciation may be offset, in whole or
in part, by an increase in the value of the position in the futures contracts.
Distributions, if any, of net long-term capital gains from certain transactions
in futures or options are taxable at long-term capital gains rates for Federal
income tax purposes, regardless of the length of time the shareholder has owned
Fund shares. See "Distributions and Taxes--Taxes".
 
                                       15
<PAGE>   18
 
     The Fund deals in financial futures contracts traded on the Chicago Board
of Trade based on The Bond Buyer Municipal Bond Index, a price-weighted measure
of the market value of 40 large, recently issued tax-exempt bonds. There can be
no assurance, however, that a liquid secondary market will exist to terminate
any particular financial futures contract at any specific time. If it is not
possible to close a financial futures position entered into by the Fund, the
Fund would continue to be required to make daily cash payments of variation
margin in the event of adverse price movements. In such a situation, if the Fund
has insufficient cash, it may have to sell portfolio securities to meet daily
variation margin requirements at a time when it may be disadvantageous to do so.
The inability to close financial futures positions also could have an adverse
impact on the Fund's ability to hedge effectively. There is also the risk of
loss by the Fund of margin deposits in the event of bankruptcy of a broker with
whom the Fund has an open position in a financial futures contract.
 
     The Fund may purchase and sell financial futures contracts on U.S.
Government securities and write and purchase put and call options on such
futures contracts as a hedge against adverse changes in interest rates as
described more fully in the Statement of Additional Information. With respect to
U.S. Government securities, currently there are financial futures contracts
based on long-term U.S. Treasury bonds, Treasury notes, Government National
Mortgage Association ("GNMA") Certificates and three-month U.S. Treasury bills.
 
     Subject to policies adopted by the Trustees, the Fund also may engage in
other financial futures contracts transactions and options thereon, such as
financial futures contracts or options on other municipal bond indexes which may
become available if the Manager of the Fund and the Trustees of the Trust should
determine that there is normally a sufficient correlation between the prices of
such futures contracts and the Municipal Bonds in which the Fund invests to make
such hedging appropriate.
 
     Utilization of futures transactions and options thereon involves the risk
of imperfect correlation in movements in the price of futures contracts and
movements in the price of the security which is the subject of the hedge. If the
price of the futures contract moves more or less than the price of the security
that is the subject of the hedge, the Fund will experience a gain or loss which
will not be completely offset by movements in the price of such security. There
is a risk of imperfect correlation where the securities underlying futures
contracts have different maturities, ratings or geographic mixes than the
security being hedged. In addition, the correlation may be affected by additions
to or deletions from the index which serves as a basis for a financial futures
contract. Finally, in the case of futures contracts on U.S. Government
securities and options on such futures contracts, the anticipated correlation of
price movements between the U.S. Government securities underlying the futures or
options and Municipal Bonds may be adversely affected by economic, political,
legislative or other developments which have a disparate impact on the
respective markets for such securities.
 
     Under regulations of the Commodity Futures Trading Commission ("CFTC"), the
futures trading activities described herein will not result in the Fund being
deemed to be a "commodity pool," as defined under such regulations, provided
that the Fund adheres to certain restrictions. In particular, the Fund may
purchase and sell futures contracts and options thereon (i) only for bona fide
hedging purposes, and (ii) for non-hedging purposes, if the aggregate initial
margins and premiums required to establish positions in such contracts and
options does not exceed 5% of the liquidation value of the Fund's portfolio
assets after taking into account unrealized profits and unrealized losses on any
such contracts and options. (However, as stated above, the Fund intends to
engage in options and futures transactions only for hedging purposes.) Margin
deposits may consist of cash or securities acceptable to the broker and the
relevant contract market.
 
                                       16
<PAGE>   19
 
   
     When the Fund purchases a futures contract, or writes a put option or
purchases a call option thereon, it will maintain an amount of cash, cash
equivalents (e.g., high-grade commercial paper and daily tender adjustable
notes) or liquid securities in a segregated account with the Fund's custodian,
so that the amount so segregated plus the amount of initial and variation margin
held in the account of its broker equals the market value of the futures
contracts, thereby ensuring that the use of such futures contract is
unleveraged. It is not anticipated that transactions in futures contracts will
have the effect of increasing portfolio turnover.
    
 
     Although certain risks are involved in options and futures transactions,
the Manager believes that, because the Fund will engage in futures transactions
only for hedging purposes, the futures portfolio strategies of the Fund will not
subject the Fund to certain risks frequently associated with speculation in
futures transactions. The Fund must meet certain Federal income tax requirements
under the Internal Revenue Code of 1986, as amended (the "Code"), in order to
qualify for the special tax treatment afforded regulated investment companies,
including a requirement that less than 30% of its gross income be derived from
the sale or other disposition of securities held for less than three months.
Additionally, the Fund is required to meet certain diversification requirements
under the Code.
 
     The liquidity of a secondary market in a futures contract may be adversely
affected by "daily price fluctuation limits" established by commodity exchanges
which limit the amount of fluctuation in a futures contract price during a
single trading day. Once the daily limit has been reached in the contract, no
trades may be entered into at a price beyond the limit, thus preventing the
liquidation of open futures positions. Prices have in the past moved beyond the
daily limit on a number of consecutive trading days.
 
     The successful use of transactions in futures also depends on the ability
of the Manager to forecast correctly the direction and extent of interest rate
movements within a given time frame. To the extent these rates remain stable
during the period in which a futures contract is held by the Fund or move in a
direction opposite to that anticipated, the Fund may realize a loss on the
hedging transaction which is not fully or partially offset by an increase in the
value of portfolio securities. As a result, the Fund's total return for such
period may be less than if it had not engaged in the hedging transaction.
Furthermore, the Fund will only engage in hedging transactions from time to time
and may not necessarily be engaging in hedging transactions when movements in
interest rates occur.
 
     Reference is made to the Statement of Additional Information for further
information on financial futures contracts and certain options thereon.
 
REPURCHASE AGREEMENTS
 
   
     As Temporary Investments, the Fund may invest in securities pursuant to
repurchase agreements. Repurchase agreements may be entered into only with a
member bank of the Federal Reserve System or a primary dealer in U.S. Government
securities or an affiliate thereof. Under such agreements, the seller agrees,
upon entering into the contract, to repurchase the security from the Fund at a
mutually agreed upon time and price, thereby determining the yield during the
term of the agreement. This results in a fixed rate of return insulated from
market fluctuations during such period. The Fund may not invest in repurchase
agreements maturing in more than seven days if such investments, together with
the Fund's other illiquid investments, would exceed 15% of the Fund's total
assets. In the event of a default by the seller under a repurchase agreement, a
Fund may suffer time delays and incur costs or possible losses in connection
with the disposition of the underlying securities.
    
 
                                       17
<PAGE>   20
 
INVESTMENT RESTRICTIONS
 
   
     The Fund's investment activities are subject to further restrictions that
are described in the Statement of Additional Information. Investment
restrictions and policies which are fundamental policies may not be changed
without the approval of the holders of a majority of the Fund's outstanding
voting securities, as defined in the 1940 Act which 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. Among
its fundamental policies, the Fund may not invest more than 25% of its assets,
taken at market value at the time of each investment, in the securities of
issuers in any particular industry (excluding the U.S. Government and its
agencies and instrumentalities) (for purposes of this restriction, states,
municipalities and their political subdivisions are not considered to be part of
any industry). Investment restrictions and policies that are non-fundamental
policies may be changed by the Board of Trustees without shareholder approval.
As a non-fundamental policy, the Fund may not borrow amounts in excess of 20% of
its total assets taken at market value (including the amount borrowed), and then
only from banks as a temporary measure for extraordinary or emergency purposes.
In addition, the Fund will not purchase securities while borrowings are
outstanding.
    
 
   
     As a non-fundamental policy, the Fund will not invest in securities which
cannot be readily resold because of legal or contractual restrictions or which
cannot otherwise be marketed, redeemed or put to the issuer or a third party, if
at the time of acquisition more than 15% of its total assets would be invested
in such securities. This restriction shall not apply to securities which mature
within seven days or securities which the Board of Trustees of the Trust has
otherwise determined to be liquid pursuant to applicable law.
    
 
     The Fund is classified as non-diversified within the meaning of the 1940
Act, which means that the Fund is not limited by the 1940 Act in the proportion
of its assets that it may invest in obligations of a single issuer. However, the
Fund's investments will be limited so as to qualify as a "regulated investment
company" for purposes of the Code. See "Distributions and Taxes--Taxes". To
qualify, among other requirements, the Trust will limit the Fund's investments
so that, at the close of each quarter of the taxable year, (i) not more than 25%
of the market value of the Fund's total assets will be invested in the
securities of a single issuer, and (ii) with respect to 50% of the market value
of its total assets, not more than 5% of the market value of its total assets
will be invested in the securities of a single issuer and the Fund will not own
more than 10% of the outstanding voting securities of a single issuer. For
purposes of this restriction, the Fund will regard each state and each political
subdivision, agency or instrumentality of such state and each multi-state agency
of which such state is a member and each public authority which issues
securities on behalf of a private entity as a separate issuer, except that if
the security is backed only by the assets and revenues of a non-government
entity then the entity with the ultimate responsibility for the payment of
interest and principal may be regarded as the sole issuer. These tax-related
limitations may be changed by the Trustees of the Trust to the extent necessary
to comply with changes to the Federal tax requirements. A fund which elects to
be classified as "diversified" under the 1940 Act must satisfy the foregoing 5%
and 10% requirements with respect to 75% of its total assets. To the extent that
the Fund assumes large positions in the obligations of a small number of
issuers, the Fund's total return may fluctuate to a greater extent than that of
a diversified company as a result of changes in the financial condition or in
the market's assessment of the issuers.
 
     Investors are referred to the Statement of Additional Information for a
complete description of the Fund's investment restrictions.
 
                                       18
<PAGE>   21
 
                            MANAGEMENT OF THE TRUST
 
TRUSTEES
 
     The Trustees of the Trust consist of six individuals, five of whom are not
"interested persons" of the Trust as defined in the 1940 Act. The Trustees are
responsible for the overall supervision of the operations of the Trust and the
Fund and perform the various duties imposed on the directors or trustees of
investment companies by the 1940 Act.
 
     The Trustees are:
 
   
     ARTHUR ZEIKEL*--President of the Manager and its affiliate, MLAM; President
and Director of Princeton Services, Inc. ("Princeton Services"); Executive Vice
President of ML&Co.; and Director of the Distributor.
    
 
   
     JAMES H. BODURTHA--Director and Executive Vice President, The China
Business Group, Inc.
    
 
   
     HERBERT I. LONDON--John M. Olin Professor of Humanities, New York
University.
    
 
   
     ROBERT R. MARTIN--Former Chairman, Kinnard Investments, Inc.
    
 
     JOSEPH L. MAY--Attorney in private practice.
 
     ANDRE F. PEROLD--Professor, Harvard Business School.
- ---------------
* Interested person, as defined in the 1940 Act, of the Trust.
 
MANAGEMENT AND ADVISORY ARRANGEMENTS
 
   
     The Manager, which is an affiliate of MLAM and is owned and controlled by
ML & Co., a financial services holding company, acts as the manager for the Fund
and provides the Fund with management services. The Manager or MLAM acts as the
investment adviser for more than 130 registered investment companies. MLAM also
offers portfolio management and portfolio analysis services to individuals and
institutions. As of September 30, 1996 the Manager and MLAM had a total of
approximately $214.1 billion in investment company and other portfolio assets
under management, including accounts of certain affiliates of the Manager.
    
 
   
     Subject to the direction of the Trustees, the Manager is responsible for
the actual management of the Fund's portfolio and constantly reviews the Fund's
holdings in light of its own research analysis and that from other relevant
sources. The responsibility for making decisions to buy, sell or hold a
particular security rests with the Manager. The Manager performs certain of the
other administrative services and provides all the office space, facilities,
equipment and necessary personnel for management of the Fund.
    
 
   
     Fred K. Stuebe is the Portfolio Manager for the Fund and is responsible for
the day-to-day management of the Fund's investment portfolio. He has been a Vice
President of MLAM since 1989.
    
 
   
     Pursuant to the management agreement between the Manager and the Trust on
behalf of the Fund (the "Management Agreement"), the Manager is entitled to
receive from the Fund a monthly fee based upon the average daily net assets of
the Fund at the following annual rates: 0.55% of the average daily net assets
not exceeding $500 million; 0.525% of the average daily net assets exceeding
$500 million but not exceeding $1.0 billion; and 0.50% of the average daily net
assets exceeding $1.0 billion. For the fiscal year ended July 31,
    
 
                                       19
<PAGE>   22
 
   
1996, the total fee payable by the Fund to the Manager was $133,974 (based on
average net assets of approximately $24.4 million), all of which was voluntarily
waived.
    
 
   
     The Management Agreement obligates the Trust on behalf of the Fund to pay
certain expenses incurred in the Fund's operations, including, among other
things, the management fee, legal and audit fees, unaffiliated Trustees' fees
and expenses, registration fees, custodian and transfer agency fees, accounting
and pricing costs, and certain of the costs of printing proxies, shareholder
reports, prospectuses and statements of additional information. Accounting
services are provided to the Fund by the Manager, and the Fund reimburses the
Manager for its costs in connection with such services. The Manager may waive
all or a portion of its management fee and may voluntarily assume all or a
portion of the Fund's expenses. For the fiscal year ended July 31, 1996, the
Fund reimbursed the Manager $42,113 for accounting services. For the fiscal year
ended July 31, 1996, the ratio of total expenses to average net assets was
1.26%, 1.77%, 1.88%, and 1.36% for Class A, Class B, Class C, and Class D
shares, respectively.
    
 
CODE OF ETHICS
 
     The Board of Trustees of the Trust has adopted a Code of Ethics under Rule
17j-1 of the 1940 Act which incorporates the Code of Ethics of the Manager
(together, the "Codes"). The Codes significantly restrict the personal investing
activities of all employees of the Manager and, as described below, impose
additional, more onerous, restrictions on fund investment personnel.
 
     The Codes require that all employees of the Manager preclear any personal
securities investment (with limited exceptions, such as government securities).
The preclearance requirement and associated procedures are designed to identify
any substantive prohibition or limitation applicable to the proposed investment.
The substantive restrictions applicable to all employees of the Manager include
a ban on acquiring any securities in a "hot" initial public offering and a
prohibition from profiting on short-term trading in securities. In addition, no
employee may purchase or sell any security which at the time is being purchased
or sold (as the case may be), or to the knowledge of the employee is being
considered for purchase or sale, by any fund advised by the Manager.
Furthermore, the Codes provide for trading "blackout periods" which prohibit
trading by investment personnel of the Fund within periods of trading by the
Fund in the same (or equivalent) security (15 or 30 days depending upon the
transaction).
 
TRANSFER AGENCY SERVICES
 
   
     Merrill Lynch Financial Data Services, Inc. (the "Transfer Agent"), which
is a wholly-owned subsidiary of ML&Co., acts as the Fund's transfer agent
pursuant to a transfer agency, dividend disbursing agency and shareholder
servicing agency agreement (the "Transfer Agency Agreement"). Pursuant to the
Transfer Agency Agreement, the Transfer Agent is responsible for the issuance,
transfer and redemption of shares and the opening and maintenance of shareholder
accounts. Pursuant to the Transfer Agency Agreement, the Fund pays the Transfer
Agent an annual fee of $11.00 per Class A and Class D shareholder account and
$14.00 per Class B and Class C shareholder account, and the Transfer Agent is
entitled to reimbursement from the Fund for out-of-pocket expenses incurred by
the Transfer Agent under the Transfer Agency Agreement. For the fiscal year
ended July 31, 1996, the total fee paid by the Fund to the Transfer Agent
pursuant to the Transfer Agency Agreement was $19,890. At September 30, 1996,
the Fund had 56 Class A shareholder accounts, 918 Class B shareholder accounts,
126 Class C shareholder accounts and 30 Class D shareholder accounts. At this
    
 
                                       20
<PAGE>   23
 
   
level of accounts, the annual fee payable to the Transfer Agent would aggregate
approximately $15,562 plus out-of-pocket expenses.
    
 
                               PURCHASE OF SHARES
 
   
     The Distributor, an affiliate of the Manager, MLAM and Merrill Lynch, acts
as the Distributor of the shares of the Fund. Shares of the Fund are offered
continuously for sale by the Distributor and other eligible securities dealers
(including Merrill Lynch). Shares of the Fund may be purchased from securities
dealers or by mailing a purchase order directly to the Transfer Agent. The
minimum initial purchase is $1,000 and the minimum subsequent purchase is $50.
    
 
   
     The Fund is offering its shares in four classes at a public offering price
equal to the next determined net asset value per share plus sales charges
imposed either at the time of purchase or on a deferred basis depending upon the
class of shares selected by the investor under the Merrill Lynch Select
Pricing(SM) System, as described below. The applicable offering price for
purchase orders is based upon the net asset value of the Fund next determined
after receipt of the purchase orders by the Distributor. As to purchase orders
received by securities dealers prior to the close of business on the New York
Stock Exchange (the "NYSE")(generally 4:00 P.M., New York time), which includes
orders received after the close of business on the previous day, the applicable
offering price will be based on the net asset value determined as of 15 minutes
after the close of business on the NYSE on that day, provided the Distributor in
turn receives the order from the securities dealer prior to 30 minutes after the
close of business on the NYSE on that day. If the purchase orders are not
received by the Distributor prior to 30 minutes after the close of business on
the NYSE, such orders shall be deemed received on the next business day. The
Trust or the Distributor may suspend the continuous offering of the Fund's
shares of any class at any time in response to conditions in the securities
markets or otherwise and may thereafter resume such offering from time to time.
Any order may be rejected by the Distributor or the Trust. Neither the
Distributor nor the dealers are permitted to withhold placing orders to benefit
themselves by a price change. Merrill Lynch may charge its customers a
processing fee (presently $4.85) to confirm a sale of shares to such customers.
Purchases directly through the Fund's Transfer Agent are not subject to the
processing fee.
    
 
     The Fund issues four classes of shares under the Merrill Lynch Select
Pricing(SM) System, which permits each investor to choose the method of
purchasing shares that the investor believes is most beneficial given the amount
of the purchase, the length of time the investor expects to hold the shares and
other relevant circumstances. Shares of Class A and Class D are sold to
investors choosing the initial sales charge alternatives and shares of Class B
and Class C are sold to investors choosing the deferred sales charge
alternatives. Investors should determine whether under their particular
circumstances it is more advantageous to incur an initial sales charge or to
have the entire initial purchase price invested in the Fund with the investment
thereafter being subject to a CDSC, ongoing distribution fees and higher account
maintenance fees. A discussion of the factors that investors should consider in
determining the method of purchasing shares under the Merrill Lynch Select
Pricing(SM) System is set forth under "Merrill Lynch Select Pricing(SM) System"
on page 4.
 
     Each Class A, Class B, Class C and Class D share of the Fund represents
identical interests in the investment portfolio of the Fund and has the same
rights, except that Class B, Class C and Class D shares bear the expenses of the
ongoing account maintenance fees, and Class B and Class C shares bear the
expenses
 
                                       21
<PAGE>   24
 
   
of the ongoing distribution fees and the additional incremental transfer agency
costs resulting from the deferred sales charge arrangements. The deferred sales
charges, distribution and account maintenance fees that are imposed on Class B
and Class C shares, as well as the account maintenance fees that are imposed on
Class D shares, will be imposed directly against those classes and not against
all assets of the Fund and, accordingly, such charges will not affect the net
asset value of any other class or have any impact on investors choosing another
sales charge option. Dividends paid by the Fund for each class of shares will be
calculated in the same manner at the same time and will differ only to the
extent that account maintenance and distribution fees and any incremental
transfer agency costs relating to a particular class are borne exclusively by
that class. Class B, Class C and Class D shares each have exclusive voting
rights with respect to the Rule 12b-1 distribution plan adopted with respect to
such class pursuant to which account maintenance and/or distribution fees are
paid. See "Distribution Plans" below. Each class has different exchange
privileges. See "Shareholder Services--Exchange Privilege".
    
 
     Investors should understand that the purpose and function of the initial
sales charges with respect to Class A and Class D shares are the same as those
of the deferred sales charges with respect to Class B and Class C shares in that
the sales charges applicable to each class provide for the financing of the
distribution of the shares of the Fund. The distribution-related revenues paid
with respect to a class will not be used to finance the distribution
expenditures of another class. Sales personnel may receive different
compensation for selling different classes of shares. Investors are advised that
only Class A and Class D shares may be available for purchase through securities
dealers, other than Merrill Lynch, which are eligible to sell shares.
 
   
     The following table sets forth a summary of the distribution arrangements
for each class of shares under the Merrill Lynch Select Pricing(SM) System.
    
   
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------
<C>      <S>                                    <C>            <C>             <C>
- -------------------------------------------------------------------------------------------------------
 
<CAPTION>
                                                  ACCOUNT
                                                MAINTENANCE    DISTRIBUTION
CLASS              SALES CHARGE(1)                  FEE            FEE            CONVERSION FEATURE
- -------------------------------------------------------------------------------------------------------
<C>      <S>                                    <C>            <C>             <C>
 A       Maximum 4.00% initial sales               No             No           No
           charge(2)(3)
- -------------------------------------------------------------------------------------------------------
 B       CDSC for a period of 4 years, at a      0.25%           0.25%         B shares convert to D
           rate of 4.0% during the first                                       shares
           year, decreasing 1.0% annually to                                   automatically after
           0.0%(4)                                                             approximately ten
                                                                               years(5)
- -------------------------------------------------------------------------------------------------------
 C       1.0% CDSC for one year(6)               0.25%           0.35%         No
- -------------------------------------------------------------------------------------------------------
 D       Maximum 4.00% initial sales             0.10%            No           No
           charge(3)
- -------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------
</TABLE>
    
 
- ---------------
 
   
(1) Initial sales charges are imposed at the time of purchase as a percentage of
    the offering price. CDSCs are imposed if the redemption occurs within the
    applicable CDSC time period. The charge will be assessed on an amount equal
    to the lesser of the proceeds of redemption or the cost of the shares being
    redeemed.
    
 
(2) Offered only to eligible investors. See "Initial Sales Charge
    Alternatives--Class A and Class D Shares--Eligible Class A Investors".
 
   
(3) Reduced for purchases of $25,000 or more and waived for purchases of Class A
    shares in connection with certain fee-based programs. Class A and Class D
    share purchases of $1,000,000 or more may not be subject to an initial sales
    charge but instead may be subject to a 1.0% CDSC if redeemed within one
    year. Such CDSC may be waived in connection with redemptions to fund
    participation in certain fee-based programs.
    
 
   
(4) The CDSC may be modified in connection with redemptions to fund
    participation in certain fee-based programs.
    
 
   
(5) The conversion period for dividend reinvestment shares and certain fee-based
    programs may be modified. Also, Class B shares of certain other MLAM-advised
    mutual funds into which exchanges may be made have an eight year conversion
    period. If Class B shares of the Fund are exchanged for Class B shares of
    another MLAM-advised mutual fund, the conversion period applicable to the
    Class B shares acquired in the exchange will apply, and the holding period
    for the shares exchanged will be tacked on to the holding period for the
    shares acquired.
    
 
   
(6) The CDSC may be waived in connection with redemptions to fund participation
    in certain fee-based programs.
    
 
                                       22
<PAGE>   25
 
INITIAL SALES CHARGE ALTERNATIVES--CLASS A AND CLASS D SHARES
 
     Investors choosing the initial sales charge alternatives who are eligible
to purchase Class A shares should purchase Class A shares rather than Class D
shares because there is an account maintenance fee imposed on Class D shares.
 
     The public offering price of Class A and Class D shares for purchasers
choosing the initial sales charge alternatives is the next determined net asset
value plus varying sales charges (i.e., sales loads), as set forth below.
 
<TABLE>
<CAPTION>
                                                  SALES CHARGE       SALES CHARGE AS        DISCOUNT TO
                                                  AS PERCENTAGE        PERCENTAGE*        SELECTED DEALERS
                                                   OF OFFERING         OF THE NET         AS PERCENTAGE OF
              AMOUNT OF PURCHASE                      PRICE          AMOUNT INVESTED     THE OFFERING PRICE
- -----------------------------------------------  ---------------     ---------------     ------------------
<S>                                              <C>                 <C>                 <C>
Less than $25,000..............................       4.00%               4.17%                3.75%
$25,000 but less than $50,000..................        3.75                3.90                 3.50
$50,000 but less than $100,000.................        3.25                3.36                 3.00
$100,000 but less than $250,000................        2.50                2.56                 2.25
$250,000 but less than $1,000,000..............        1.50                1.52                 1.25
$1,000,000 and over**..........................        0.00                0.00                 0.00
</TABLE>
 
- ---------------
 * Rounded to the nearest one-hundredth percent.
 
   
** The initial sales charge may be waived on Class A and Class D purchases of
   $1,000,000 or more and on Class A purchases in connection with certain
   fee-based programs. If the sales charge is waived in connection with a
   purchase of $1,000,000 or more, such purchases may be subject to a CDSC of
   1.0% if the shares are redeemed within one year after purchase. Such CDSC may
   be waived in connection with redemptions to fund participation in certain
   fee-based programs. The charge will be assessed on an amount equal to the
   lesser of the proceeds of redemption or the cost of the shares being
   redeemed.
    
 
   
     The Distributor may reallow discounts to selected dealers and retain the
balance over such discounts. At times the Distributor may reallow the entire
sales charge to such dealers. Since securities dealers selling Class A and Class
D shares of the Fund will receive a concession equal to most of the sales
charge, they may be deemed to be underwriters under the Securities Act of 1933,
as amended (the "Securities Act"). For the fiscal year ended July 31, 1996, the
Fund sold 35,220 Class A shares for aggregate net proceeds of $327,383. The
gross sales charges for the sale of Class A shares of the Fund for the year were
$2,613, of which $168 and $2,445 were received by the Distributor and Merrill
Lynch, respectively. For the fiscal year ended July 31, 1996, the Distributor
received no CDSCs with respect to redemption within one year after purchase of
Class A shares purchased subject to a front-end sales charge waiver. For the
fiscal year ended July 31, 1996, the Fund sold 30,212 Class D shares for
aggregate net proceeds of $282,355. The gross sales charges for the sale of
Class D shares of the Fund for the year were $6,272, of which $598 and $5,674
were received by the Distributor and Merrill Lynch, respectively. For the fiscal
year ended July 31, 1996, the Distributor received no CDSCs with respect to
redemption within one year after purchase of Class D shares purchased subject to
a front-end sales charge waiver.
    
 
     Eligible Class A Investors.  Class A shares are offered to a limited group
of investors and also will be issued upon reinvestment of dividends on
outstanding Class A shares. Investors that currently own Class A shares of the
Fund in a shareholder account are entitled to purchase additional Class A shares
of the Fund in that account. Class A shares are available at net asset value to
corporate warranty insurance reserve fund programs provided that the program has
$3 million or more initially invested in MLAM-advised mutual funds.
 
                                       23
<PAGE>   26
 
   
Also eligible to purchase Class A shares at net asset value are participants in
certain investment programs including TMA(SM) Managed Trusts to which Merrill
Lynch Trust Company provides discretionary trustee services, collective
investment trusts for which Merrill Lynch Trust Company serves as trustee, and
purchases made in connection with certain fee-based programs. In addition, Class
A shares are offered at net asset value to ML&Co. and its subsidiaries and their
directors and employees and to members of the Boards of MLAM-advised investment
companies, including the Trust. Certain persons who acquired shares of certain
MLAM-advised closed-end funds in their initial offerings who wish to reinvest
the net proceeds from a sale of their closed-end fund shares of common stock in
shares of the Fund also may purchase Class A or Class D shares of the Fund if
certain conditions set forth in the Statement of Additional Information are met.
In addition, Class A shares of the Fund and certain other MLAM-advised mutual
funds are offered at net asset value to shareholders of Merrill Lynch Senior
Floating Rate Fund, Inc. and, if certain conditions set forth in the Statement
of Additional Information are met, to shareholders of Merrill Lynch Municipal
Strategy Fund, Inc. and Merrill Lynch High Income Municipal Bond Fund, Inc. who
wish to reinvest the net proceeds from a sale of certain of their shares of
common stock, pursuant to a tender offer conducted by such funds in shares of
the Fund and certain other MLAM-advised mutual funds.
    
 
   
     Reduced Initial Sales Charges.  No initial sales charges are imposed upon
Class A and Class D shares issued as a result of the automatic reinvestment of
dividends or capital gains distributions. Class A and Class D sales charges also
may be reduced under a Right of Accumulation and a Letter of Intention. Class A
shares are offered at net asset value to certain eligible Class A investors as
set forth above under "Eligible Class A Investors". See "Shareholder
Services--Fee-Based Programs". Class A and Class D shares are offered at net
asset value to Employee Access Accounts(SM) available through qualified
employers which provide employer-sponsored retirement and savings plans that are
eligible to purchase such shares at net asset value. Class A and Class D shares
are offered at net asset value to shareholders of Merrill Lynch Municipal
Strategy Fund, Inc. and Merrill Lynch High Income Municipal Bond Fund, Inc. who
wish to reinvest in shares of the Fund the net proceeds from a sale of certain
of their shares of common stock, pursuant to tender offers conducted by those
funds.
    
 
     Class D shares are offered at net asset value without sales charge to an
investor who has a business relationship with a Merrill Lynch financial
consultant, if certain conditions set forth in the Statement of Additional
Information are met. Class D shares may be offered at net asset value in
connection with the acquisition of assets of other investment companies.
 
     Additional information concerning these reduced initial sales charges is
set forth in the Statement of Additional Information.
 
DEFERRED SALES CHARGE ALTERNATIVES--CLASS B AND CLASS C SHARES
 
     Investors choosing the deferred sales charge alternatives should consider
Class B shares if they intend to hold their shares for an extended period of
time and Class C shares if they are uncertain as to the length of time they
intend to hold their assets in MLAM-advised mutual funds.
 
   
     The public offering price of Class B and Class C shares for investors
choosing the deferred sales charge alternatives is the next determined net asset
value per share without the imposition of a sales charge at the time of
purchase. As discussed below, Class B shares are subject to a four-year CDSC,
while Class C shares are subject only to a one-year 1.0% CDSC. On the other
hand, approximately ten years after Class B shares
    
 
                                       24
<PAGE>   27
 
are issued, such Class B shares, together with shares issued upon dividend
reinvestment with respect to those shares, are automatically converted into
Class D shares of the Fund and thereafter will be subject to lower continuing
fees. See "Conversion of Class B Shares to Class D Shares" below. Both Class B
and Class C shares are subject to an account maintenance fee of 0.25% of net
assets and Class B and Class C shares are subject to distribution fees of 0.25%
and 0.35%, respectively, of net assets as discussed below under "Distribution
Plans". The proceeds from the account maintenance fees are used to compensate
Merrill Lynch for providing continuing account maintenance activities.
 
     Class B and Class C shares are sold without an initial sales charge so that
the Fund will receive the full amount of the investor's purchase payment.
Merrill Lynch compensates its financial consultants for selling Class B and
Class C shares at the time of purchase from its own funds. See "Distribution
Plans" below.
 
     Proceeds from the CDSCs and the distribution fees are paid to the
Distributor and are used in whole or in part by the Distributor to defray the
expenses of dealers (including Merrill Lynch) related to providing
distribution-related services to the Fund in connection with the sale of the
Class B and Class C shares, such as the payment of compensation to financial
consultants for selling Class B and Class C shares from the dealer's own funds.
The combination of the CDSC and the ongoing distribution fee facilitates the
ability of the Fund to sell the Class B and Class C shares without a sales
charge being deducted at the time of purchase. Approximately ten years after
issuance, Class B shares will convert automatically into Class D shares of the
Fund, which are subject to a lower account maintenance fee and no distribution
fee; Class B shares of certain other MLAM-advised mutual funds into which
exchanges may be made convert into Class D shares automatically after
approximately eight years. If Class B shares of the Fund are exchanged for Class
B shares of another MLAM-advised mutual fund, the conversion period applicable
to the Class B shares acquired in the exchange will apply, and the holding
period for the shares exchanged will be tacked on to the holding period for the
shares acquired.
 
     Imposition of the CDSC and the distribution fee on Class B and Class C
shares is limited by the NASD asset-based sales charge rule. See "Limitations on
the Payment of Deferred Sales Charges" below. The proceeds from the ongoing
account maintenance fees are used to compensate Merrill Lynch for providing
continuing account maintenance activities. Class B shareholders of the Fund
exercising the exchange privilege described under "Shareholder
Services--Exchange Privilege" will continue to be subject to the Fund's CDSC
schedule, if such schedule is higher than the CDSC schedule relating to the
Class B shares acquired as a result of the exchange.
 
     Contingent Deferred Sales Charges--Class B Shares.  Class B shares which
are redeemed within four years of purchase may be subject to a CDSC at the rates
set forth below charged as a percentage of the dollar amount subject thereto.
The charge will be assessed on an amount equal to the lesser of the proceeds of
redemption or the cost of the shares being redeemed. Accordingly, no CDSC will
be imposed on increases in net asset value above the initial purchase price. In
addition, no CDSC will be assessed on shares derived from reinvestment of
dividends or capital gains distributions.
 
                                       25
<PAGE>   28
 
     The following table sets forth the rates of the Class B CDSC:
 
<TABLE>
<CAPTION>
                                                                            CDSC AS A
                                                                          PERCENTAGE OF
                             YEAR SINCE PURCHASE                          DOLLAR AMOUNT
                                PAYMENT MADE                            SUBJECT TO CHARGE
        -------------------------------------------------------------   -----------------
        <S>                                                             <C>
               0-1...................................................          4.0%
               1-2...................................................          3.0%
               2-3...................................................          2.0%
               3-4...................................................          1.0%
               4 and thereafter......................................          0.0%
</TABLE>
 
   
For the fiscal year ended July 31, 1996, the Distributor received CDSCs of
$91,447 with respect to redemptions of Class B shares, all of which were paid to
Merrill Lynch.
    
 
     In determining whether a CDSC is applicable to a redemption, the
calculation will be determined in the manner that results in the lowest
applicable rate being charged. Therefore, it will be assumed that the redemption
is first of shares held for over four years or shares acquired pursuant to
reinvestment of dividends or distributions and then of shares held longest
during the four-year period. The charge will not be applied to dollar amounts
representing an increase in the net asset value since the time of purchase. A
transfer of shares from a shareholder's account to another account will be
assumed to be made in the same order as a redemption.
 
     To provide an example, assume an investor purchased 100 Class B shares at
$10 per share (at a cost of $1,000) and in the third year after purchase, the
net asset value per share is $12 and, during such time, the investor has
acquired 10 additional shares upon dividend reinvestment. If at such time the
investor makes his first redemption of 50 shares (proceeds of $600), 10 shares
will not be subject to a CDSC because of dividend reinvestment. With respect to
the remaining 40 shares, the CDSC is applied only to the original cost of $10
per share and not to the increase in net asset value of $2 per share. Therefore,
$400 of the $600 redemption proceeds will be charged at a rate of 2.0% (the
applicable rates in the third year after purchase).
 
   
     The Class B CDSC is waived on redemptions of shares following the death or
disability (as defined in the Code) of a shareholder. Additional information
concerning the waiver of the Class B CDSC is set forth in the Statement of
Additional Information. The terms of the CDSC may be modified in connection with
redemptions to fund participation in certain fee-based programs. See
"Shareholder Services--Fee-Based Programs".
    
 
   
     Contingent Deferred Sales Charges--Class C Shares.  Class C shares which
are redeemed within one year of purchase may be subject to a 1.0% CDSC charged
as a percentage of the dollar amount subject thereto. The charge will be
assessed on an amount equal to the lesser of the proceeds of redemption or the
cost of the shares being redeemed. Accordingly, no Class C CDSC will be imposed
on increases in net asset value above the initial purchase price. In addition,
no Class C CDSC will be assessed on shares derived from reinvestment of
dividends or capital gains distributions. For the fiscal year ended July 31,
1996, the Distributor received CDSCs of $530 with respect to redemptions of
Class C shares, all of which were paid to Merrill Lynch. No Class C CDSC will be
assessed in connection with redemptions to fund participation in certain fee-
based programs. See "Shareholder Services--Fee-Based Programs".
    
 
     In determining whether a Class C CDSC is applicable to a redemption, the
calculation will be determined in the manner that results in the lowest possible
rate being charged. Therefore, it will be assumed
 
                                       26
<PAGE>   29
 
that the redemption is first of shares held for over one year or shares acquired
pursuant to reinvestment of dividends or distributions and then of shares held
longest during the one-year period. The charge will not be applied to dollar
amounts representing an increase in the net asset value since the time of
purchase. A transfer of shares from a shareholder's account to another account
will be assumed to be made in the same order as a redemption.
 
     Conversion of Class B Shares to Class D Shares.  After approximately ten
years (the "Conversion Period"), Class B shares will be converted automatically
into Class D shares of the Fund. Class D shares are subject to an ongoing
account maintenance fee of 0.10% of net assets but are not subject to the
distribution fee that is borne by Class B shares. Automatic conversion of Class
B shares into Class D shares will occur at least once each month (on the
"Conversion Date") on the basis of the relative net asset values of the shares
of the two classes on the Conversion Date, without the imposition of any sales
load, fee or other charge. Conversion of Class B shares to Class D shares will
not be deemed a purchase or sale of the shares for Federal income tax purposes.
 
     In addition, shares purchased through reinvestment of dividends on Class B
shares also will convert automatically to Class D shares. The Conversion Date
for dividend reinvestment shares will be calculated taking into account the
length of time the shares underlying such dividend reinvestment shares were
outstanding. If at a Conversion Date the conversion of Class B shares to Class D
shares of the Fund in a single account will result in less than $50 worth of
Class B shares being left in the account, all of the Class B shares of the Fund
held in the account on the Conversion Date will be converted to Class D shares
of the Fund.
 
     Share certificates for Class B shares of the Fund to be converted must be
delivered to the Transfer Agent at least one week prior to the Conversion Date
applicable to those shares. In the event such certificates are not received by
the Transfer Agent at least one week prior to the Conversion Date, the related
Class B shares will convert to Class D shares on the next scheduled Conversion
Date after such certificates are delivered.
 
     In general, Class B shares of equity MLAM-advised mutual funds will convert
approximately eight years after initial purchase, and Class B shares of taxable
and tax-exempt fixed income MLAM-advised mutual funds will convert approximately
ten years after initial purchase. If, during the Conversion Period, a
shareholder exchanges Class B shares with an eight-year Conversion Period for
Class B shares with a ten-year Conversion Period, or vice versa, the Conversion
Period applicable to the Class B shares acquired in the exchange will apply, and
the holding period for the shares exchanged will be tacked onto the holding
period for the shares acquired.
 
   
     The Conversion Period may be modified for certain fee-based programs. See
"Shareholder Services-- Fee-Based Programs".
    
 
DISTRIBUTION PLANS
 
     The Fund has adopted separate distribution plans for Class B, Class C and
Class D shares pursuant to Rule 12b-1 under the 1940 Act (each a "Distribution
Plan") with respect to the account maintenance and/or distribution fees paid by
the Fund to the Distributor with respect to such classes. The Class B and Class
C Distribution Plans provide for the payment of account maintenance fees and
distribution fees, and the Class D Distribution Plan provides for the payment of
account maintenance fees.
 
     The Distribution Plans for Class B, Class C and Class D shares each provide
that the Fund pays the Distributor an account maintenance fee relating to the
shares of the relevant class, accrued daily and paid monthly, at the annual
rates of 0.25%, 0.25% and 0.10%, respectively, of the average daily net assets
of the
 
                                       27
<PAGE>   30
 
Fund attributable to shares of the relevant class in order to compensate the
Distributor and Merrill Lynch (pursuant to a sub-agreement) in connection with
account maintenance activities.
 
     The Distribution Plans for Class B and Class C shares each provide that the
Fund also pays the Distributor a distribution fee relating to the shares of the
relevant class, accrued daily and paid monthly, at the annual rate of 0.25% and
0.35%, respectively, of the average daily net assets of the Fund attributable to
the shares of the relevant class in order to compensate the Distributor and
Merrill Lynch (pursuant to a sub-agreement) for providing shareholder and
distribution services, and bearing certain distribution-related expenses of the
Fund, including payments to financial consultants for selling Class B and Class
C shares of the Fund. The Distribution Plans relating to Class B and Class C
shares are designed to permit an investor to purchase Class B and Class C shares
through dealers without the assessment of an initial sales charge and at the
same time permit the dealer to compensate its financial consultants in
connection with the sale of the Class B and Class C shares. In this regard, the
purpose and function of the ongoing distribution fee and the CDSC are the same
as those of the initial sales charge with respect to the Class A and Class D
shares of the Fund in that the deferred sales charges provide for the financing
of the distribution of the Fund's Class B and Class C shares.
 
   
     For the fiscal year ended July 31, 1996, the Fund paid the Distributor
$104,504 pursuant to the Class B Distribution Plan (based on average net assets
subject to such Class B Distribution Plan of approximately $20.9 million), all
of which was paid to Merrill Lynch for providing account maintenance and
distribution-related activities and services in connection with Class B shares.
For the fiscal year ended July 31, 1996, the Fund paid the Distributor $9,357
pursuant to the Class C Distribution Plan (based on average net assets subject
to such Class C Distribution Plan of approximately $1.6 million), all of which
was paid to Merrill Lynch for providing account maintenance and
distribution-related activities and services in connection with Class C shares.
For the fiscal year ended July 31, 1996, the Fund paid the Distributor $624
pursuant to the Class D Distribution Plan (based on average net assets subject
to such Class D Distribution Plan of approximately $624,440), all of which was
paid to Merrill Lynch for providing account maintenance activities in connection
with Class D shares. At September 30, 1996, the net assets of the Fund subject
to the Class B Distribution Plan aggregated approximately $22.2 million. At this
asset level, the annual fee payable pursuant to such Class B Distribution Plan
would aggregate approximately $110,841. At September 30, 1996, the net assets of
the Fund subject to the Class C Distribution Plan aggregated approximately $2.3
million. At this asset level, the annual fee payable pursuant to such Class C
Distribution Plan would aggregate approximately $13,826. At September 30, 1996,
the net assets of the Fund subject to the Class D Distribution Plan aggregated
approximately $728,231. At this asset level, the annual fee payable pursuant to
such Class D Distribution Plan would aggregate approximately $728.
    
 
     Payments under the Distribution Plans are based on a percentage of average
daily net assets attributable to the shares regardless of the amount of expenses
incurred, and, accordingly, distribution-related revenues from the Distribution
Plans may be more or less than distribution-related expenses. Information with
respect to the distribution-related revenues and expenses is presented to the
Trustees for their consideration in connection with their deliberations as to
the continuance of the Class B and Class C Distribution Plans. This information
is presented annually as of December 31 of each year on a "fully allocated
accrual" basis and quarterly on a "direct expense and revenue/cash" basis. On
the fully allocated accrual basis, revenues consist of the account maintenance
fees, distribution fees, the CDSCs and certain other related revenues, and
expenses consist of financial consultant compensation, branch office and
regional operation center selling and
 
                                       28
<PAGE>   31
 
   
transaction processing expenses, advertising, sales promotion and market
expenses, corporate overhead and interest expense. On the direct expense and
revenue/cash basis, revenues consist of the account maintenance fees,
distribution fees and CDSCs, and the expenses consist of financial consultant
compensation. As of December 31, 1995, the fully allocated accrual expenses
incurred by the Distributor and Merrill Lynch for the period since the
commencement of operations of Class B shares exceeded fully allocated accrual
revenues by approximately $504,000 (2.36% of Class B net assets at that date).
As of July 31, 1996, direct cash expenses for the period since the commencement
of operations of Class B shares exceeded direct cash revenues by $6,581 (.03% of
Class B net assets at that date). Similar fully allocated accrual data for Class
C shares is not presented because such revenues and expenses for the period
October 21, 1994 (commencement of operations) to December 31, 1995 are de
minimis. As of July 31, 1996, direct cash revenues for the period since the
commencement of operations of Class C shares exceeded direct cash expenses by
$3,491 (.16% of Class C net assets at that date).
    
 
LIMITATIONS ON THE PAYMENT OF DEFERRED SALES CHARGES
 
   
     The maximum sales charge rule in the Conduct Rules of the NASD imposes a
limitation on certain asset-based sales charges such as the distribution fee and
the CDSC borne by the Class B and Class C shares, but not the account
maintenance fee. The maximum sales charge rule is applied separately to each
class. As applicable to the Fund, the maximum sales charge rule limits the
aggregate of distribution fee payments and CDSCs payable by the Fund to (1)
6.25% of eligible gross sales of Class B shares and Class C shares, computed
separately (defined to exclude shares issued pursuant to dividend reinvestments
and exchanges) plus (2) interest on the unpaid balance for the respective class,
computed separately, at the prime rate plus 1% (the unpaid balance being the
maximum amount payable minus amounts received from the payment of the
distribution fee and the CDSC). In connection with the Class B shares, the
Distributor has voluntarily agreed to waive interest charges on the unpaid
balance in excess of 0.50% of eligible gross sales. Consequently, the maximum
amount payable to the Distributor (referred to as the "voluntary maximum") in
connection with the Class B shares is 6.75% of eligible gross sales. The
Distributor retains the right to stop waiving the interest charges at any time.
To the extent payments would exceed the voluntary maximum, the Fund will not
make further payments of the distribution fee with respect to Class B shares,
and any CDSCs will be paid to the Fund rather than to the Distributor; however,
the Fund will continue to make payments of the account maintenance fee. In
certain circumstances the amount payable pursuant to the voluntary maximum may
exceed the amount payable under the NASD formula. In such circumstances payments
in excess of the amount payable under the NASD formula will not be made.
    
 
     The Fund has no obligation with respect to distribution and/or account
maintenance-related expenses incurred by the Distributor and Merrill Lynch in
connection with Class B, Class C and Class D shares, and there is no assurance
that the Trustees of the Trust will approve the continuance of the Distribution
Plans from year to year. However, the Distributor intends to seek annual
continuation of the Distribution Plans. In their review of the Distribution
Plans, the Trustees will be asked to take into consideration expenses incurred
in connection with the account maintenance and/or distribution of each class of
shares separately. The initial sales charges, the account maintenance fees, the
distribution fees and/or the CDSCs received with respect to one class will not
be used to subsidize the sale of shares of another class. Payments of the
distribution fee on Class B shares will terminate upon conversion of those Class
B shares into Class D shares as set forth under "Deferred Sales Charge
Alternatives--Class B and Class C Shares--Conversion of Class B Shares to Class
D Shares".
 
                                       29
<PAGE>   32
 
                              REDEMPTION OF SHARES
 
     The Trust is required to redeem for cash all shares of the Fund upon
receipt of a written request in proper form. The redemption price is the net
asset value per share next determined after the initial receipt of proper notice
of redemption. Except for any CDSC which may be applicable, there will be no
charge for redemption if the redemption request is sent directly to the Transfer
Agent. Shareholders liquidating their holdings will receive upon redemption all
dividends reinvested through the date of redemption. The value of shares at the
time of redemption may be more or less than the shareholder's cost, depending on
the market value of the securities held by the Fund at such time.
 
REDEMPTION
 
     A shareholder wishing to redeem shares may do so, without charge, by
tendering the shares directly to the Transfer Agent, Merrill Lynch Financial
Data Services, Inc., P.O. Box 45289, Jacksonville, Florida 32232-5289.
Redemption requests delivered other than by mail should be delivered to Merrill
Lynch Financial Data Services, Inc., 4800 Deer Lake Drive East, Jacksonville,
Florida 32246-6484. Proper notice of redemption in the case of shares deposited
with the Transfer Agent may be accomplished by a written letter requesting
redemption. Proper notice of redemption in the case of shares for which
certificates have been issued may be accomplished by a written letter as noted
above accompanied by certificates for the shares to be redeemed. Redemption
requests should not be sent to the Trust. The notice in either event requires
the signature(s) of all persons in whose name(s) the shares are registered,
signed exactly as such name(s) appear(s) on the Transfer Agent's register. The
signature(s) on the redemption request must be guaranteed by an "eligible
guarantor institution" as such term is defined in Rule 17Ad-15 under the
Securities Exchange Act of 1934, as amended, the existence and validity of which
may be verified by the Transfer Agent through the use of industry publications.
Notarized signatures are not sufficient. In certain instances, the Transfer
Agent may require additional documents such as, but not limited to, trust
instruments, death certificates, appointments as executor or administrator, or
certificates of corporate authority. For shareholders redeeming directly with
the Transfer Agent, payments will be mailed within seven days of receipt of a
proper notice of redemption.
 
     At various times the Trust may be requested to redeem Fund shares for which
it has not yet received good payment (e.g., cash, Federal funds or certified
check drawn on a United States bank). The Trust may delay or cause to be delayed
the mailing of a redemption check until such time as it has assured itself that
good payment has been collected for the purchase of such Fund shares, which will
not exceed 10 days.
 
REPURCHASE
 
   
     The Trust also will repurchase Fund shares through a shareholder's listed
securities dealer. The Trust normally will accept orders to repurchase Fund
shares by wire or telephone from dealers for their customers at the net asset
value next computed after receipt of the order by the dealer, provided that the
request for repurchase is received by the dealer prior to the close of business
on the NYSE (generally, 4:00 P.M., New York time) on the day received and such
request is received by the Trust from such dealer not later than 30 minutes
after the close of business on the NYSE, on the same day. Dealers have the
responsibility of submitting such repurchase requests to the Trust not later
than 30 minutes after the close of business on the NYSE, in order to obtain that
day's closing price.
    
 
                                       30
<PAGE>   33
 
   
     The foregoing repurchase arrangements are for the convenience of
shareholders and do not involve a charge by the Trust (other than any applicable
CDSC). Securities firms which do not have selected dealer agreements with the
Distributor, however, may impose a transaction charge on the shareholder for
transmitting the notice of repurchase to the Trust. Merrill Lynch may charge its
customers a processing fee (presently $4.85) to confirm a repurchase of shares
of such customers. Repurchases directly through the Fund's Transfer Agent are
not subject to the processing fee. The Trust reserves the right to reject any
order for repurchase, which right of rejection might adversely affect
shareholders seeking redemption through the repurchase procedure. However, a
shareholder whose order for repurchase is rejected by the Trust may redeem Fund
shares as set forth above. Redemption payments will be made within seven days of
the proper tender of the certificates, if any, and stock power or letter
requesting redemption, in each instance with signatures guaranteed as noted
above.
    
 
REINSTATEMENT PRIVILEGE--CLASS A AND CLASS D SHARES
 
   
     Shareholders who have redeemed their Class A or Class D shares have a
privilege to reinstate their accounts by purchasing Class A or Class D shares of
the Fund, as the case may be, at net asset value without a sales charge up to
the dollar amount redeemed. The reinstatement privilege may be exercised by
sending a notice of exercise along with a check for the amount to be reinstated
to the Transfer Agent within 30 days after the date the request for redemption
was accepted by the Transfer Agent or the Distributor. Alternatively, the
reinstatement privilege may be exercised through the investor's Merrill Lynch
Financial Consultant within 30 days after the date the request for redemption
was accepted by the Transfer Agent or the Distributor. The reinstatement will be
made at the net asset value per share next determined after the notice of
reinstatement is received and cannot exceed the amount of the redemption
proceeds.
    
 
                              SHAREHOLDER SERVICES
 
     The Trust offers a number of shareholder services and investment plans
designed to facilitate investment in shares of the Fund. Full details as to each
of such services, copies of the various plans described below, and instructions
as to how to participate in the various services or plans, or to change options
with respect thereto can be obtained from the Trust by calling the telephone
number on the cover page hereof or from the Distributor or Merrill Lynch.
 
   
     Investment Account.  Each shareholder whose account is maintained at the
Transfer Agent has an Investment Account and will receive statements at least
quarterly from the Transfer Agent. These statements will serve as transaction
confirmations for automatic investment purchases and the reinvestment of
ordinary income dividends and long-term capital gains distributions. These
statements will also show any other activity in the account since the preceding
statement. Shareholders will receive separate transaction confirmations for each
purchase or sale transaction other than automatic investment purchases and the
reinvestments of ordinary income dividends and long-term capital gains
distributions. A shareholder may make additions to his or her Investment Account
at any time by mailing a check directly to the Transfer Agent. Shareholders may
also maintain their accounts through Merrill Lynch. Upon the transfer of shares
out of a Merrill Lynch brokerage account, an Investment Account in the
transferring shareholder's name will be opened automatically at the Transfer
Agent. Shareholders considering transferring their Class A or Class D shares
from Merrill Lynch to another brokerage firm or financial institution should be
aware that, if the firm to which the Class A or Class D shares are to be
transferred will not take delivery of shares of the Fund, a shareholder either
must
    
 
                                       31
<PAGE>   34
 
redeem the Class A or Class D shares (paying any applicable CDSC) so that the
cash proceeds can be transferred to the account at the new firm or such
shareholder must continue to maintain an Investment Account at the Transfer
Agent for those Class A or Class D shares. Shareholders interested in
transferring their Class B or Class C shares from Merrill Lynch and who do not
wish to have an Investment Account maintained for such shares at the Transfer
Agent may request their new brokerage firm to maintain such shares in an account
registered in the name of the brokerage firm for the benefit of the shareholder
at the Transfer Agent.
 
   
     Exchange Privilege.  U.S. shareholders of each class of shares of the Fund
have an exchange privilege with certain other MLAM-advised mutual funds. There
is currently no limitation on the number of times a shareholder may exercise the
exchange privilege. The exchange privilege may be modified or terminated at any
time in accordance with the rules of the Commission.
    
 
   
     Under the Merrill Lynch Select Pricing(SM) System, Class A shareholders may
exchange Class A shares of the Fund for Class A shares of a second MLAM-advised
mutual fund if the shareholder holds any Class A shares of the second fund in
his or her account in which the exchange is made at the time of the exchange or
is otherwise eligible to purchase Class A shares of the second fund. If the
Class A shareholder wants to exchange Class A shares for shares of a second
MLAM-advised mutual fund, and the shareholder does not hold Class A shares of
the second fund in his or her account at the time of the exchange and is not
otherwise eligible to acquire Class A shares of the second fund, the shareholder
will receive Class D shares of the second fund as a result of the exchange.
Class D shares also may be exchanged for Class A shares of a second MLAM-advised
mutual fund at any time as long as, at the time of the exchange, the shareholder
holds Class A shares of the second fund in the account in which the exchange is
made or is otherwise eligible to purchase Class A shares of the second fund.
    
 
     Exchanges of Class A and Class D shares are made on the basis of the
relative net asset values per Class A or Class D share, respectively, plus an
amount equal to the difference, if any, between the sales charge previously paid
on the Class A or Class D shares being exchanged and the sales charge payable at
the time of the exchange on the shares being acquired.
 
     Class B, Class C and Class D shares are exchangeable with shares of the
same class of other MLAM-advised mutual funds.
 
   
     Shares of the Fund which are subject to a CDSC are exchangeable on the
basis of relative net asset value per share without the payment of any CDSC that
might otherwise be due upon redemption of the shares of the Fund. For purposes
of computing the CDSC that may be payable upon a disposition of the shares
acquired in the exchange, the holding period for the previously owned shares of
the Fund is "tacked" to the holding period for the newly acquired shares of the
other fund.
    
 
     Class A, Class B, Class C and Class D shares also are exchangeable for
shares of certain MLAM-advised money market funds specifically designated as
available for exchange by holders of Class A, Class B, Class C or Class D
shares. The period of time that Class A, Class B, Class C or Class D shares are
held in a money market fund, however, will not count toward satisfaction of the
holding period requirement for reduction of any CDSC imposed on such shares, if
any, and, with respect to Class B shares, toward satisfaction of the Conversion
Period.
 
                                       32
<PAGE>   35
 
     Class B shareholders of the Fund exercising the exchange privilege will
continue to be subject to the Fund's CDSC schedule if such schedule is higher
than the CDSC schedule relating to the new Class B shares. In addition, Class B
shares of the Fund acquired through use of the exchange privilege will be
subject to the Fund's CDSC schedule if such schedule is higher than the CDSC
schedule relating to the Class B shares of the MLAM-advised mutual fund from
which the exchange has been made.
 
     Exercise of the exchange privilege is treated as a sale for Federal income
tax purposes. For further information, see "Shareholder Services--Exchange
Privilege" in the Statement of Additional Information.
 
   
     Automatic Reinvestment of Dividends and Capital Gains Distributions.  All
dividends and capital gains distributions are reinvested automatically in full
and fractional shares of the Fund, without a sales charge, at the net asset
value per share at the close of business on the monthly payment date for such
dividends and distributions. A shareholder may at any time, by written
notification or by telephone (1-800-MER-FUND) to the Transfer Agent, elect to
have subsequent dividends or both dividends and capital gains distributions paid
in cash, rather than reinvested, in which event payment will be mailed monthly.
Cash payments can also be directly deposited to the shareholder's bank account.
No CDSC will be imposed upon redemption of shares issued as a result of the
automatic reinvestment of dividends or capital gains distributions.
    
 
   
     Systematic Withdrawal Plans.  A Class A or Class D shareholder may elect to
receive systematic withdrawal payments from his or her Investment Account
through automatic payment by check or through automatic payment by direct
deposit to his or her bank account on either a monthly or quarterly basis.
Alternatively, a Class A or Class D shareholder whose shares are held within a
CMA(R) or CBA(R)account may elect to have shares redeemed on a monthly,
bimonthly, quarterly, semiannual or annual basis through the CMA(R) or CBA(R)
Systematic Redemption Program, subject to certain conditions.
    
 
   
     Automatic Investment Plans.  Regular additions of Class A, Class B, Class C
and Class D shares may be made to an investor's Investment Account by
prearranged charges of $50 or more to his or her regular bank account.
Alternatively, investors who maintain CMA(R) or CBA(R) accounts may arrange to
have periodic investments made in the Fund in their CMA(R) or CBA(R) account or
in certain related accounts in amounts of $100 or more through the CMA(R) or
CBA(R) Automated Investment Program.
    
 
                                       33
<PAGE>   36
 
   
     Fee-Based Programs.  Certain Merrill Lynch fee-based programs, including
pricing alternatives for securities transactions (each referred to in this
paragraph as a "Program"), may permit the purchase of Class A shares at net
asset value. Under specified circumstances, participants in certain Programs may
deposit other classes of shares which will be exchanged for Class A shares.
Initial or deferred sales charges otherwise due in connection with such
exchanges may be waived or modified, as may the Conversion Period applicable to
the deposited shares. Termination of participation in a Program may result in
the redemption of shares held therein or the automatic exchange thereof to
another class at net asset value, which may be shares of a money market fund. In
addition, upon termination of participation in a Program, shares that have been
held for less than specified periods within such Program may be subject to a fee
based upon the current value of such shares. These Programs also generally
prohibit such shares from being transferred to another account at Merrill Lynch,
to another broker-dealer or to the Transfer Agent. Except in limited
circumstances (which may also involve an exchange as described above), such
shares must be redeemed and another class of shares purchased (which may involve
the imposition of initial or deferred sales charges and distribution and account
maintenance fees) in order for the investment not to be subject to Program fees.
Additional information regarding a specific Program (including charges and
limitations on transferability applicable to shares that may be held in such
Program) is available in such Program's client agreement and from Merrill Lynch
Investor Services at (800) MER-FUND (637-3863).
    
 
                             PORTFOLIO TRANSACTIONS
 
     The Trust has no obligation to deal with any dealer or group of dealers in
the execution of transactions in portfolio securities of the Fund. Municipal
Bonds and other securities in which the Fund invests are traded primarily in the
over-the-counter market. Where possible, the Trust deals directly with the
dealers who make a market in the securities involved except in those
circumstances where better prices and execution are available elsewhere. It is
the policy of the Trust to obtain the best net results in conducting portfolio
transactions for the Fund, taking into account such factors as price (including
the applicable dealer spread or commission), the size, type and difficulty of
the transactions involved, the firm's general execution and operations
facilities, and the firm's risk in positioning the securities involved and the
provision of supplemental investment research by the firm. While reasonably
competitive spreads or commissions are sought, the Fund will not necessarily be
paying the lowest spread or commission available. The sale of shares of the Fund
may be taken into consideration as a factor in the selection of brokers or
dealers to execute portfolio transactions for the Fund. The portfolio securities
of the Fund generally are traded on a principal basis and normally do not
involve either brokerage commissions or transfer taxes. The cost of portfolio
securities transactions of the Fund primarily consists of dealer or underwriter
spreads. Under the 1940 Act, persons affiliated with the Trust, including
Merrill Lynch, are prohibited from dealing with the Trust as a principal in the
purchase and sale of securities unless such trading is permitted by an exemptive
order issued by the Commission. The Trust has obtained an exemptive order
permitting it to engage in certain principal transactions with Merrill Lynch
involving high quality short-term municipal bonds subject to certain conditions.
In addition, the Trust may not purchase securities, including Municipal Bonds,
for the Fund during the existence of any underwriting syndicate of which Merrill
Lynch is a member except pursuant to procedures approved by the Trustees of the
Trust which comply with rules adopted by the Commission. The Trust has applied
for an exemptive order permitting it to, among other things, (i) purchase high
quality tax-exempt securities from Merrill Lynch when
 
                                       34
<PAGE>   37
 
Merrill Lynch is a member of an underwriting syndicate and (ii) purchase
tax-exempt securities from and sell tax-exempt securities to Merrill Lynch in
secondary market transactions. Affiliated persons of the Trust may serve as its
broker in over-the-counter transactions conducted for the Fund on an agency
basis only.
 
                            DISTRIBUTIONS AND TAXES
 
DISTRIBUTIONS
 
   
     The net investment income of the Fund is declared as dividends prior to the
determination of the net asset value, which is calculated 15 minutes after the
close of business on the NYSE (generally, 4:00 P.M., New York time), on that
day. The net investment income of the Fund for dividend purposes consists of
interest earned on portfolio securities, less expenses, in each case computed
since the most recent determination of the net asset value. Expenses of the
Fund, including the management fees and the account maintenance and distribution
fees, are accrued daily. Dividends of net investment income are declared daily
and reinvested monthly in the form of additional full and fractional shares of
the Fund at net asset value as of the close of business on the "payment date"
unless the shareholder elects to receive such dividends in cash. Shares will
accrue dividends as long as they are issued and outstanding. Shares are issued
and outstanding from the settlement date of a purchase order to the day prior to
the settlement date of a redemption order.
    
 
     All net realized long- or short-term capital gains, if any, are declared
and distributed to the Fund's shareholders at least annually. Capital gains
distributions will be reinvested automatically in shares of the Fund unless the
shareholder elects to receive such distributions in cash.
 
     The per share dividends and distributions on each class of shares will be
reduced as a result of any account maintenance, distribution and transfer agency
fees applicable to that class. See "Additional Information--Determination of Net
Asset Value".
 
     See "Shareholder Services" for information as to how to elect either
dividend reinvestment or cash payments. Portions of dividends and distributions
which are taxable to shareholders as described below are subject to income tax
whether they are reinvested in shares of the Fund or received in cash.
 
TAXES
 
   
     The Trust will continue to qualify the Fund for the special tax treatment
afforded regulated investment companies ("RICs") under the Code. If it so
qualifies, the Fund (but not its shareholders) will not be subject to Federal
income tax to the extent that it distributes its net investment income and net
realized capital gains. The Trust intends to cause the Fund to distribute
substantially all of its income.
    
 
     To the extent that the dividends distributed to the Fund's Class A, Class
B, Class C and Class D shareholders (together, the "shareholders") are derived
from interest income exempt from Federal income tax under Code Section 103(a)
and are properly designated as "exempt-interest dividends", they will be
excludable from a shareholder's gross income for Federal income tax purposes.
Exempt-interest dividends are included, however, in determining the portion, if
any, of a person's social security benefits and railroad retirement benefits
subject to Federal income taxes. The portion of exempt-interest dividends paid
from interest received by the Fund from Maryland Municipal Bonds and
distributions attributable to gains from Maryland Municipal Bonds (other than
obligations issued by U.S. possessions) or interest on
 
                                       35
<PAGE>   38
 
   
U.S. Government obligations will be exempt from Maryland personal and corporate
income taxes; any other dividends from the Fund will be subject to Maryland
income tax. However, shareholders of the Fund that are financial institutions
otherwise subject to Maryland financial institution franchise taxes would be
subject to such taxes on distributions received from the Fund (including
exempt-interest dividends). Individual shareholders subject to income taxation
by states other than Maryland will realize a lower after-tax rate of return than
Maryland shareholders since the dividends distributed by the Fund generally will
not be exempt, to any significant degree, from income taxation by such other
states. The Trust will inform shareholders annually as to the portion of the
Fund's distributions which constitutes exempt-interest dividends and the portion
which is exempt from Maryland income tax. Interest on indebtedness incurred or
continued to purchase or carry Fund shares is not deductible for Federal income
or Maryland income tax purposes to the extent attributable to exempt-interest
dividends. Persons who may be "substantial users" (or "related persons" of
substantial users) of facilities financed by industrial development bonds or
private activity bonds held by the Fund should consult their tax advisors before
purchasing Fund shares.
    
 
   
     Maryland presently includes in Maryland taxable income a portion of certain
items of tax preference as defined in the Code. Interest paid on certain private
activity bonds constitutes such a tax preference if the bonds (i) are not
Maryland Municipal Bonds or (ii) are Maryland Municipal Bonds issued by U.S.
possessions. Accordingly, up to 50% of any distributions of the Fund's portfolio
attributable to such private activity bonds may not be exempt from Maryland
state and local individual income taxes.
    
 
     Shares of the Fund will not be subject to the Maryland personal property
tax.
 
   
     To the extent that the Fund's distributions are derived from interest on
its taxable investments or from an excess of net short-term capital gains over
net long-term capital losses ("ordinary income dividends"), such distributions
are considered ordinary income for Federal and Maryland income tax purposes.
Distributions, if any, from an excess of net long-term capital gains over net
short-term capital losses derived from the sale of securities or from certain
transactions in futures or options ("capital gain dividends") are taxable as
long-term capital gains for Federal income tax purposes regardless of the length
of time the shareholder has owned Fund shares and, for Maryland income tax
purposes, are treated as capital gains which are taxed at ordinary income tax
rates unless derived from the sale of Maryland Municipal Bonds (other than
obligations issued by U.S. possessions). Distributions by the Fund, whether from
exempt-interest income, ordinary income or capital gains will not be eligible
for the dividends received deduction allowed to corporations under the Code.
    
 
     All or a portion of the Fund's gain from the sale or redemption of
tax-exempt obligations purchased at a market discount will be treated as
ordinary income rather than capital gain. This rule may increase the amount of
ordinary income dividends received by shareholders. Distributions in excess of
the Fund's earnings and profits will first reduce the adjusted tax basis of a
holder's shares and, after such adjusted tax basis is reduced to zero, will
constitute capital gains to such holder (assuming the shares are held as a
capital asset). Any loss upon the sale or exchange of shares held for six months
or less will be treated as long-term capital loss to the extent of any capital
gain dividends received by the shareholder. In addition, such loss will be
disallowed to the extent of any exempt-interest dividends received by the
shareholder. If the Fund pays a dividend in January which was declared in the
previous October, November or December to shareholders of record on a specified
date in one of such months, then such dividend will be treated for tax purposes
as being paid by the Fund and received by its shareholders on December 31 of the
year in which such dividend was declared.
 
                                       36
<PAGE>   39
 
   
     The Code subjects interest received on certain otherwise tax-exempt
securities to an alternative minimum tax. This alternative minimum tax applies
to interest received on certain "private activity bonds" issued after August 7,
1986. Private activity bonds are bonds which, although tax-exempt, are used for
purposes other than those generally performed by governmental units and which
benefit non-governmental entities (e.g., bonds used for industrial development
or housing purposes). Income received on such bonds is classified as an item of
"tax preference," which could subject certain investors in such bonds, including
shareholders of the Fund, to an alternative minimum tax. The Fund will purchase
such "private activity bonds," and the Trust will report to shareholders within
60 days after the Fund's taxable year-end the portion of the Fund's dividends
declared during the year which constitutes an item of tax preference for
alternative minimum tax purposes. The Code further provides that corporations
are subject to an alternative minimum tax based, in part, on certain differences
between taxable income as adjusted for other tax preferences and the
corporation's "adjusted current earnings," which more closely reflect a
corporation's economic income. Because an exempt-interest dividend paid by the
Fund will be included in adjusted current earnings, a corporate shareholder may
be required to pay alternative minimum tax on exempt-interest dividends paid by
the Fund.
    
 
     No gain or loss will be recognized by Class B shareholders on the
conversion of their Class B shares into Class D shares. A shareholder's basis in
the Class D shares acquired will be the same as such shareholder's basis in the
Class B shares converted, and the holding period of the acquired Class D shares
will include the holding period for the converted Class B shares.
 
   
     If a shareholder exercises an exchange privilege within 90 days of
acquiring the shares, then any loss the shareholder can recognize on the
exchange will be reduced (or the gain increased) to the extent any sales charge
paid to the Fund on the exchanged shares reduces any sales charge such
shareholder would have owed upon purchase of the new shares in the absence of
the exchange privilege. Instead, such sales charge will be treated as an amount
paid for the new shares.
    
 
     A loss realized on a sale or exchange of shares of the Fund will be
disallowed if other Fund shares are acquired (whether through the automatic
reinvestment of dividends or otherwise) within a 61-day period beginning 30 days
before and ending 30 days after the date that the shares are disposed of. In
such a case, the basis of the shares acquired will be adjusted to reflect the
disallowed loss.
 
     Under certain provisions of the Code, some shareholders may be subject to a
31% withholding tax on certain ordinary income dividends and on capital gain
dividends and redemption payments ("backup withholding"). Generally,
shareholders subject to backup withholding will be those for whom no certified
taxpayer identification number is on file with the Trust or who, to the Trust's
knowledge, have furnished an incorrect number. When establishing an account, an
investor must certify under penalty of perjury that such number is correct and
that such investor is not otherwise subject to backup withholding.
 
     The Code provides that every person 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 Fund) during the taxable
year.
 
     The foregoing is a general and abbreviated summary of the applicable
provisions of the Code, Treasury regulations and Maryland tax laws presently in
effect. For the complete provisions, reference should be made to the pertinent
Code sections, the Treasury regulations promulgated thereunder and the
applicable Maryland income tax laws. The Code and the Treasury regulations, as
well as the Maryland tax laws, are subject to change by legislative, judicial or
administrative action either prospectively or retroactively.
 
                                       37
<PAGE>   40
 
   
     Shareholders are urged to consult their tax advisors regarding the
availability of any exemptions from state or local taxes (other than those
imposed by Maryland) and with specific questions as to Federal, foreign, state
or local taxes.
    
 
                                PERFORMANCE DATA
 
     From time to time the Fund may include its average annual total return,
yield and tax-equivalent yield for various specified time periods in
advertisements or information furnished to present or prospective shareholders.
Average annual total return, yield and tax-equivalent yield are computed
separately for Class A, Class B, Class C and Class D shares in accordance with
formulas specified by the Commission.
 
     Average annual total return quotations for the specified periods will be
computed by finding the average annual compounded rates of return (based on net
investment income and any realized and unrealized capital gains or losses on
portfolio investments over such periods) that would equate the initial amount
invested to the redeemable value of such investment at the end of each period.
Average annual total return will be computed assuming all dividends and
distributions are reinvested and taking into account all applicable recurring
and nonrecurring expenses, including any CDSC that would be applicable to a
complete redemption of the investment at the end of the specified period such as
in the case of Class B and Class C shares and the maximum sales charge in the
case of Class A and Class D shares. Dividends paid by the Fund with respect to
all shares, to the extent any dividends are paid, will be calculated in the same
manner at the same time on the same day and will be in the same amount, except
that account maintenance fees and distribution charges and any incremental
transfer agency costs relating to each class of shares will be borne exclusively
by that class. The Fund will include performance data for all classes of shares
of the Fund in any advertisement or information including performance data of
the Fund.
 
     The Fund also may quote total return and aggregate total return performance
data for various specified time periods. Such data will be calculated
substantially as described above, except that (1) the rates of return calculated
will not be average annual rates, but rather, actual annual, annualized or
aggregate rates of return and (2) the maximum applicable sales charges will not
be included with respect to annual or annualized rates of return calculations.
Aside from the impact on the performance data calculations of including or
excluding the maximum applicable sales charges, actual annual or annualized
total return data generally will be lower than average annual total return data
since the average annual rates of return reflect compounding; aggregate total
return data generally will be higher than average annual total return data since
the aggregate rates of return reflect compounding over a longer period of time.
In advertisements distributed to investors whose purchases are subject to waiver
of the CDSC in the case of Class B and Class C shares or reduced sales charges
in the case of Class A or Class D shares, the performance data may take into
account the reduced, and not the maximum, sales charge or may not take into
account the CDSC and therefore may reflect greater total return since, due to
the reduced sales charges or waiver of the CDSC, a lower amount of expenses is
deducted. See "Purchase of Shares". The Fund's total return may be expressed
either as a percentage or as a dollar amount in order to illustrate such total
return on a hypothetical $1,000 investment in the Fund at the beginning of each
specified period.
 
     Yield quotations will be computed based on a 30-day period by dividing (a)
the net income based on the yield of each security earned during the period by
(b) the average daily number of shares outstanding during the period that were
entitled to receive dividends multiplied by the maximum offering price per share
on the
 
                                       38
<PAGE>   41
 
   
last day of the period. Tax equivalent yield quotations will be computed by
dividing (a) the part of the Fund's yield that is tax-exempt by (b) one minus a
stated tax rate and (c) adding the result to that part, if any, of the Fund's
yield that is not tax-exempt. The yield for the 30-day period ended July 31,
1996 was 4.63% for Class A shares, 4.31% for Class B shares, 4.21% for Class C
shares and 4.53% for Class D shares and the tax-equivalent yield for the same
period (based on a Federal income tax rate of 28%) was 6.43% for Class A shares,
5.99% for Class B shares, 5.85% for Class C shares and 6.29% for Class D shares.
The yield without voluntary reimbursement or waiver of Fund expenses for the
30-day period would have been 3.89% for Class A shares, 3.54% for Class B
shares, 3.44% for Class C shares and 3.79% for Class D shares with a
tax-equivalent yield of 5.40% for Class A shares, 4.92% for Class B shares,
4.78% for Class C shares and 5.26% for Class D shares.
    
 
     Total return, yield and tax-equivalent yield figures are based on the
Fund's historical performance and are not intended to indicate future
performance. The Fund's total return, yield and tax-equivalent yield will vary
depending on market conditions, the securities comprising the Fund's portfolio,
the Fund's operating expenses and the amount of realized and unrealized net
capital gains or losses during the period. The value of an investment in the
Fund will fluctuate and an investor's shares, when redeemed, may be worth more
or less than their original cost.
 
     On occasion, the Fund may compare its performance to performance data
published by Lipper Analytical Services, Inc., Morningstar Publications, Inc.
("Morningstar") and CDA Investment Technology, Inc., or to data contained in
publications such as Money Magazine, U.S. News & World Report, Business Week,
Forbes Magazine and Fortune Magazine. From time to time, the Fund may include
the Fund's Morningstar risk-adjusted performance ratings in advertisements or
supplemental sales literature. As with other performance data, performance
comparisons should not be considered indicative of the Fund's relative
performance for any future period.
 
                             ADDITIONAL INFORMATION
 
DETERMINATION OF NET ASSET VALUE
 
   
     The net asset value of the shares of all classes of the Fund is determined
by the Manager once daily 15 minutes after the close of business on the NYSE
(generally, 4:00 P.M., New York time), on each day during which the NYSE is open
for trading. The net asset value per share is computed by dividing the sum of
the value of the securities held by the Fund plus any cash or other assets minus
all liabilities by the total number of shares outstanding at such time, rounded
to the nearest cent. Expenses, including the fees payable to the Manager and the
Distributor, are accrued daily.
    
 
   
     The per share net asset value of Class A shares generally will be higher
than the per share net asset value of shares of the other classes, reflecting
the daily expense accruals of the account maintenance, distribution and higher
transfer agency fees applicable with respect to Class B and Class C shares and
the daily expense accruals of the account maintenance fees applicable with
respect to Class D shares; moreover, the per share net asset value of Class D
shares generally will be higher than the per share net asset value of Class B
and Class C shares, reflecting the daily expense accruals of the distribution
fees, higher account maintenance fees and higher transfer agency fees applicable
with respect to Class B and Class C shares. It is expected, however, that the
per share net asset value of the classes will tend to converge (although not
necessarily meet)
    
 
                                       39
<PAGE>   42
 
immediately after the payment of dividends or distributions which will differ by
approximately the amount of the expense accrual differentials between the
classes.
 
ORGANIZATION OF THE TRUST
 
   
     The Trust is an unincorporated business trust organized on August 2, 1985
under the laws of Massachusetts. On October 1, 1987, the Trust changed its name
from "Merrill Lynch Multi-State Tax-Exempt Series Trust" to "Merrill Lynch
Multi-State Municipal Bond Series Trust" and on December 22, 1987 the Trust
changed its name to "Merrill Lynch Multi-State Municipal Series Trust". The
Trust is an open-end management investment company comprised of separate series
("Series"), each of which is a separate portfolio offering shares to selected
groups of purchasers. Each of the Series is to be managed independently in order
to provide to shareholders who are residents of the state to which such Series
relates as high a level of income exempt from Federal and, in certain cases,
state and local income taxes as is consistent with prudent investment
management. The Trustees are authorized to create an unlimited number of Series
and, with respect to each Series, to issue an unlimited number of full and
fractional shares of beneficial interest of $.10 par value of different classes.
Shareholder approval is not required for the authorization of additional Series
or classes of a Series of the Trust. At the date of this Prospectus, the shares
of the Fund are divided into Class A, Class B, Class C and Class D shares. Class
A, Class B, Class C and Class D shares represent interests in the same assets of
the Fund and are identical in all respects except that Class B, Class C and
Class D shares bear certain expenses related to the account maintenance
associated with such shares, and Class B and Class C shares bear certain
expenses related to the distribution of such shares. Each class has exclusive
voting rights with respect to matters relating to account maintenance and
distribution expenditures as applicable. See "Purchase of Shares". The Trustees
of the Trust may classify and reclassify the shares of any Series into
additional classes at a future date.
    
 
     Shareholders are entitled to one vote for each full share and to fractional
votes for fractional shares held in the election of Trustees (to the extent
hereinafter provided) and on other matters submitted to the vote of
shareholders. There normally will be no meeting of shareholders for the purpose
of electing Trustees unless and until such time as less than a majority of the
Trustees holding office have been elected by shareholders, at which time the
Trustees then in office will call a shareholders meeting for the election of
Trustees. Shareholders may, in accordance with the terms of the Declaration of
Trust, cause a meeting of shareholders to be held for the purpose of voting on
the removal of Trustees. Also, the Trust will be required to call a special
meeting of shareholders of a Series in accordance with the requirements of the
1940 Act to seek approval of new management and advisory arrangements, of a
material increase in distribution fees or of a change in the fundamental
policies, objectives or restrictions of a Series. Except as set forth above, the
Trustees shall continue to hold office and appoint successor Trustees. Each
issued and outstanding share is entitled to participate equally in dividends and
distributions declared by the respective Series and in net assets of such Series
upon liquidation or dissolution remaining after satisfaction of outstanding
liabilities except that, as noted above, Class B, Class C and Class D shares
bear certain additional expenses. The obligations and liabilities of a
particular Series are restricted to the assets of that Series and do not extend
to the assets of the Trust generally. The shares of each Series, when issued,
will be fully-paid and non-assessable by the Trust.
 
                                       40
<PAGE>   43
 
SHAREHOLDER REPORTS
 
     Only one copy of each shareholder report and certain shareholder
communications will be mailed to each identified shareholder regardless of the
number of accounts such shareholder has. If a shareholder wishes to receive
separate copies of each report and communication for each of the shareholder's
related accounts, the shareholder should notify in writing:
 
                          Merrill Lynch Financial Data Services, Inc.
                          P.O. Box 45289
                          Jacksonville, FL 32232-5289
 
   
     The written notification should include the shareholder's name, address,
tax identification number and Merrill Lynch, Pierce, Fenner & Smith Incorporated
and/or mutual fund account numbers. If you have any questions regarding this
matter please call your Merrill Lynch Financial Consultant or Merrill Lynch
Financial Data Services, Inc. at 800-637-3863.
    
 
SHAREHOLDER INQUIRIES
 
     Shareholder inquiries may be addressed to the Trust at the address or
telephone number set forth on the cover page of this Prospectus.
 
                               ------------------
 
   
     The Declaration of Trust establishing the Trust, dated August 2, 1985, a
copy of which together with all amendments thereto (the "Declaration"), is on
file in the office of the Secretary of the Commonwealth of Massachusetts,
provides that the name "Merrill Lynch Multi-State Municipal Series Trust" refers
to the Trustees under the Declaration collectively as Trustees, but not as
individuals or personally; and no Trustee, shareholder, officer, employee or
agent of the Trust shall be held to any personal liability, nor shall resort be
had to such person's private property for the satisfaction of any obligation or
claim of the Trust, but the "Trust Property" only shall be liable.
    
 
                                       41
<PAGE>   44
 
                      (This page intentionally left blank)
 
                                       42
<PAGE>   45
 
    MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND--AUTHORIZATION FORM (PART 1)
- --------------------------------------------------------------------------------
1. SHARE PURCHASE APPLICATION
 
    I, being of legal age, wish to purchase: (choose one)
         [ ] Class A shares            [ ] Class B shares            [ ] Class C
shares            [ ] Class D shares
of Merrill Lynch Maryland Municipal Bond Fund and establish an Investment
Account as described in the Prospectus. In the event that I am not eligible to
purchase Class A shares, I understand that Class D shares will be purchased.
 
    Basis for establishing an Investment Account:
 
   
        A. I enclose a check for $......... payable to Merrill Lynch Financial
    Data Services, Inc., as an initial investment (minimum $1,000). I understand
    that this purchase will be executed at the applicable offering price next to
    be determined after this Application is received by you.
    
 
        B. I already own shares of the following Merrill Lynch mutual funds that
    would qualify for the right of accumulation as outlined in the Statement of
    Additional Information: (Please list all funds. Use a separate sheet of
    paper if necessary.)
 
    1. ...................................................                    4.
 ...................................................
 
    2. ...................................................                    5.
 ...................................................
 
    3. ...................................................                    6.
 ...................................................
 
Name............................................................................
                           First Name           Initial           Last Name
 
Name of Co-Owner (if any).......................................................
                           First Name           Initial           Last Name
 
Address.........................................................................
 
 ...................................................................... Date....

                                            (Zip Code)
 
<TABLE>
<S>                                              <C>
Occupation ..................................    Name and Address of Employer.......................................
                                                 ...................................................................
                                                 ...................................................................
 .............................................    ...................................................................
              Signature of Owner                                   Signature of Co-Owner (if any)
</TABLE>
 
(In the case of co-owners, a joint tenancy with right of survivorship will be
presumed unless otherwise specified.)
- --------------------------------------------------------------------------------
2. DIVIDEND AND CAPITAL GAIN DISTRIBUTION OPTIONS
 
<TABLE>
<S>                  <C>         <C>                              <C>         <C>                      <C>
                     Ordinary Income Dividends                    Long-Term Capital Gains
                     -------------------------------              -------------------------------
                     SELECT [ ]  Reinvest                         SELECT [ ]  Reinvest
                     ONE:  [ ]   Cash                             ONE:  [ ]   Cash
                     -------------------------------              -------------------------------
</TABLE>
 
If no election is made, dividends and capital gains will be automatically
reinvested at net asset value without a sales charge.
 
IF CASH, SPECIFY HOW YOU WOULD LIKE YOUR DISTRIBUTIONS PAID TO YOU:    [ ] Check
or [ ] Direct Deposit to bank account
 
IF DIRECT DEPOSIT TO BANK ACCOUNT IS SELECTED, PLEASE COMPLETE BELOW:
 
I hereby authorize payment of dividend and capital gain distributions by direct
deposit to my bank account and, if necessary, debit entries and adjustments for
any credit entries made to my account in accordance with the terms I have
selected on the Merrill Lynch Maryland Municipal Bond Fund Authorization Form.
 
SPECIFY TYPE OF ACCOUNT (check one):  [ ] checking  [ ] savings
 
Name on your Account............................................................
 
Bank Name.......................................................................
 
Bank Number ............................................. Account Number........
 
Bank Address....................................................................
 
I AGREE THAT THIS AUTHORIZATION WILL REMAIN IN EFFECT UNTIL I PROVIDE WRITTEN
NOTIFICATION TO MERRILL LYNCH FINANCIAL DATA SERVICES, INC. AMENDING OR
TERMINATING THIS SERVICE.
 
Signature of Depositor..........................................................
 
Signature of Depositor ................................................ Date....
 
(if joint account, both must sign)
 
NOTE: IF DIRECT DEPOSIT TO BANK ACCOUNT IS SELECTED, YOUR BLANK, UNSIGNED CHECK
MARKED "VOID" OR A DEPOSIT SLIP FROM YOUR SAVINGS ACCOUNT SHOULD ACCOMPANY THIS
APPLICATION.
 
                                       43
<PAGE>   46
 
      MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND--AUTHORIZATION FORM (PART
                                1)--(CONTINUED)
- --------------------------------------------------------------------------------
 
3. SOCIAL SECURITY NUMBER OR TAXPAYER [ ] IDENTIFICATION NUMBER
 
            Social Security Number or Taxpayer Identification Number
 
    Under penalty of perjury, I certify (1) that the number set forth above is
my correct Social Security Number or Taxpayer Identification Number and (2) that
I am not subject to backup withholding (as discussed in the Prospectus under
"Distribution and Taxes--Taxes") either because I have not been notified that I
am subject thereto as a result of a failure to report all interest or dividends,
or the Internal Revenue Service ("IRS") has notified me that I am no longer
subject thereto.
 
    INSTRUCTION: YOU MUST STRIKE OUT THE LANGUAGE IN (2) ABOVE IF YOU HAVE BEEN
NOTIFIED THAT YOU ARE SUBJECT TO BACKUP WITHHOLDING DUE TO UNDER-REPORTING AND
IF YOU HAVE NOT RECEIVED A NOTICE FROM THE IRS THAT BACKUP WITHHOLDING HAS BEEN
TERMINATED. THE UNDERSIGNED AUTHORIZES THE FURNISHING OF THIS CERTIFICATION TO
OTHER MERRILL LYNCH SPONSORED MUTUAL FUNDS.
 
<TABLE>
<S>                                                          <C>
 ......................................................       ......................................................
                  Signature of Owner                                     Signature of Co-Owner (if any)
</TABLE>
 
- --------------------------------------------------------------------------------
 
4. LETTER OF INTENTION--CLASS A AND D SHARES ONLY (See terms and conditions in
the Statement of Additional Information)
 
<TABLE>
<S>                                                                        <C>
                                                                                ............................,
                                                                                        19 . . . . . .
Dear Sir/Madam:                                                            Date of Initial Purchase
</TABLE>
 
    Although I am not obligated to do so, I intend to purchase shares of Merrill
Lynch Maryland Municipal Bond Fund or any other investment company with an
initial sales charge or deferred sales charge for which Merrill Lynch Funds
Distributor, Inc. acts as distributor over the next 13-month period which will
equal or exceed:
 
                  [ ] $25,000    [ ] $50,000    [ ] $100,000   [ ]
              $250,000               [ ] $1,000,000
 
    Each purchase will be made at the then reduced offering price applicable to
the amount checked above, as described in the Merrill Lynch Maryland Municipal
Bond Fund Prospectus.
 
    I agree to the terms and conditions of this Letter of Intention. I hereby
irrevocably constitute and appoint Merrill Lynch Funds Distributor, Inc., my
attorney, with full power of substitution, to surrender for redemption any or
all shares of Merrill Lynch Maryland Municipal Bond Fund held as security.
 
<TABLE>
<S>                                                       <C>
By:.....................................................  .......................................................
Signature of Owner                                        Signature of Co-Owner
                                                          (If registered in joint names, both must sign)
</TABLE>
 
    In making purchases under this letter, the following are the related
accounts on which reduced offering prices are to apply:
 
<TABLE>
<S>                                                          <C>
(1) Name ..........................................          (2) Name..............................................
Account Number ....................................          Account Number........................................
</TABLE>
 
- --------------------------------------------------------------------------------
 
5. FOR DEALER ONLY
 
- ---                      Branch Office, Address, Stamp
- ---
 
- -
- -
 
- -
- -
- ---
- ---
 
This form when completed should be mailed to:
    Merrill Lynch Maryland Municipal Bond Fund
    c/o Merrill Lynch Financial Data Services, Inc.
    P.O. Box 45289
    Jacksonville, FL 32232-5289
   
We hereby authorize Merrill Lynch Funds Distributor, Inc. to act as our agent in
connection with transactions under this authorization form and agree to notify
the Distributor of any purchases or sales made under a Letter of Intention,
Automatic Investment Plan or Systematic Withdrawal Plan. We guarantee the
shareholder's signature.
    
 
 .......................................................
                            Dealer Name and Address
 
By .............................................................................
                         Authorized Signature of Dealer
 
<TABLE>
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C> <C>
- ---------             ------------
                                        ..........................
- ---------             ------------
Branch Code             F/C No.         F/C Last Name
- ---------             ---------------
- ---------             ---------------
Dealer's Customer A/C No.
</TABLE>
 
                                       44
<PAGE>   47
 
    MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND--AUTHORIZATION FORM (PART 2)
- --------------------------------------------------------------------------------
NOTE: THIS FORM IS REQUIRED TO APPLY FOR THE SYSTEMATIC WITHDRAWAL OR AUTOMATIC
INVESTMENT PLANS ONLY.
- --------------------------------------------------------------------------------
 
1.  ACCOUNT REGISTRATION
(Please Print)
<TABLE>
<S>                                                                            <C>   <C>   <C>   <C>   <C>   <C>   <C>   <C>   <C>
                                                                               ------------------------------------
Name of Owner............................................................
                                                                               ------------------------------------
                         First Name        Initial        Last                 Social Security No.
                           Name                                                or Taxpayer Identification Number
Name of Co-Owner (if any)................................................
                         First Name        Initial        Last
                           Name
Address..................................................................
 .........................................................................      Account Number.......................................
                                                               (Zip Code)      (if existing account)
 
<CAPTION>
<S>                                                                       <C>
Name of Owner............................................................
                         First Name        Initial        Last
                           Name
Name of Co-Owner (if any)................................................
                         First Name        Initial        Last
                           Name
Address..................................................................
 .........................................................................
                                                               (Zip Code)
</TABLE>
 
- --------------------------------------------------------------------------------
2.  SYSTEMATIC WITHDRAWAL PLAN--CLASS A AND D SHARES ONLY (SEE TERMS AND
CONDITIONS IN THE STATEMENT OF ADDITIONAL INFORMATION)
 
MINIMUM REQUIREMENTS:  $10,000 for monthly disbursements, $5,000 for quarterly,
of [ ] Class A or [ ] Class D shares in Merrill Lynch Maryland Municipal Bond
Fund, at cost or current offering price. Withdrawals to be made either (check
one) [ ] Monthly on the 24th day of each month, or [ ] Quarterly on the 24th day
of March, June, September and December. If the 24th falls on a weekend or
holiday, the next succeeding business day will be utilized. Begin systematic
withdrawal on ________________ or as soon as possible thereafter.
                                                                       (month)
 
SPECIFY HOW YOU WOULD LIKE YOUR WITHDRAWAL PAID TO YOU (CHECK ONE):  [ ]
$________ or [ ] ____% of the current value of [ ] Class A or [ ] Class D shares
in the account.
 
SPECIFY WITHDRAWAL METHOD: [ ] check or [ ] direct deposit to bank account
(check one and complete part (a) or (b) below):
 
DRAW CHECKS PAYABLE (CHECK ONE)
(a) I hereby authorize payment by check
    [ ] as indicated in Item 1.
    [ ] to the order of.........................................................
 
Mail to (check one)
    [ ] the address indicated in Item 1.
    [ ] Name (Please Print).....................................................
 
Address.........................................................................
 
      ..........................................................................
 
      Signature of Owner
 ..................................................................... Date......
 
      Signature of Co-Owner (if any)............................................
 
   
(B) I HEREBY AUTHORIZE PAYMENT BY DIRECT DEPOSIT TO MY BANK ACCOUNT AND, IF
NECESSARY, DEBIT ENTRIES AND ADJUSTMENTS FOR ANY CREDIT ENTRIES MADE TO MY
ACCOUNT. I AGREE THAT THIS AUTHORIZATION WILL REMAIN IN EFFECT UNTIL I PROVIDE
WRITTEN NOTIFICATION TO MERRILL LYNCH FINANCIAL DATA SERVICES, INC. AMENDING OR
TERMINATING THIS SERVICE.
    
 
Specify type of account (check one):  [ ] checking  [ ] savings
 
Name on your Account............................................................
 
Bank Name.......................................................................
 
Bank Number ...................................................... Account
Number..........................................................................
 
Bank Address....................................................................
 
           .....................................................................
 
Signature of Depositor
 ..................................................................... Date......
 
Signature of Depositor..........................................................
 
(if joint account, both must sign)
 
NOTE: IF DIRECT DEPOSIT IS ELECTED, YOUR BLANK, UNSIGNED CHECK MARKED "VOID" OR
A DEPOSIT SLIP FROM YOUR SAVINGS ACCOUNT SHOULD ACCOMPANY THIS APPLICATION.
 
                                       45
<PAGE>   48
 
      MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND--AUTHORIZATION FORM (PART
                                2)--(CONTINUED)
- --------------------------------------------------------------------------------
 
3. APPLICATION FOR AUTOMATIC INVESTMENT PLAN
 
    I hereby request that Merrill Lynch Financial Data Services, Inc. draw an
automated clearing house ("ACH") debit on my checking account as described below
each month to purchase (choose one)
         [ ] Class A shares            [ ] Class B shares            [ ] Class C
shares            [ ] Class D shares
 
of Merrill Lynch Maryland Municipal Bond Fund subject to the terms set forth
below. In the event that I am not eligible to purchase Class A shares, I
understand that Class D shares will be purchased.
 
                  MERRILL LYNCH FINANCIAL DATA SERVICES, INC.
 
You are hereby authorized to draw an ACH debit each month on my bank account for
investment in Merrill Lynch Maryland Municipal Bond Fund, as indicated below:
 
    Amount of each ACH debit $..................................................
 
    Account Number..............................................................
Please date and invest ACH debits on the 20th of each month
 
beginning ________________ or as soon thereafter as possible.
            (Month)
    I agree that you are drawing these ACH debits voluntarily at my request and
that you shall not be liable for any loss arising from any delay in preparing or
failure to prepare any such debit. If I change banks or desire to terminate or
suspend this program, I agree to notify you promptly in writing. I hereby
authorize you to take any action to correct erroneous ACH debits of my bank
account or purchases of Fund shares including liquidating shares of the Fund and
crediting my bank account. I further agree that if a debit is not honored upon
presentation, Merrill Lynch Financial Data Services, Inc. is authorized to
discontinue immediately the Automatic Investment Plan and to liquidate
sufficient shares held in my account to offset the purchase made with the
dishonored debit.
 
 ...............      ..................................
     Date                      Signature of Depositor
 
                     ..................................
                              Signature of Depositor
                         (If joint account, both must sign)
                    AUTHORIZATION TO HONOR ACH DEBITS DRAWN
                 BY MERRILL LYNCH FINANCIAL DATA SERVICES, INC.
 
To..........................................................................Bank
                               (Investor's Bank)
 
Bank Address....................................................................
 
City......................................... State ........ Zip Code ..........
 
As a convenience to me, I hereby request and authorize you to pay and charge to
my account ACH debits drawn on my account by and payable to Merrill Lynch
Financial Data Services, Inc. I agree that your rights in respect to each such
debit shall be the same as if it were a check drawn on you and signed personally
by me. This authority is to remain in effect until revoked personally by me in
writing. Until you receive such notice, you shall be fully protected in honoring
any such debit. I further agree that if any such debit be dishonored, whether
with or without cause and whether intentionally or inadvertently, you shall be
under no liability.
 
 ...............      ..................................
     Date                      Signature of Depositor
 
 ...............      ..................................
 Bank Account                  Signature of Depositor
 
  Number                (If joint account, both must sign)
 
NOTE: IF AUTOMATIC INVESTMENT PLAN IS ELECTED, YOUR BLANK, UNSIGNED CHECK MARKED
"VOID" SHOULD ACCOMPANY THIS APPLICATION.
 
                                       46
<PAGE>   49
 
                                    MANAGER
 
                             Fund Asset Management
                            Administrative Offices:
                             800 Scudders Mill Road
                             Plainsboro, New Jersey
 
                                Mailing Address:
                                 P.O. Box 9011
                        Princeton, New Jersey 08543-9011
                                  DISTRIBUTOR
                     Merrill Lynch Funds Distributor, Inc.
                            Administrative Offices:
                             800 Scudders Mill Road
                             Plainsboro, New Jersey
 
                                Mailing Address:
                                 P.O. Box 9081
                        Princeton, New Jersey 08543-9081
                                   CUSTODIAN
                      State Street Bank and Trust Company
                                  P.O. Box 351
                          Boston, Massachusetts 02101
                                 TRANSFER AGENT
                  Merrill Lynch Financial Data Services, Inc.
                            Administrative Offices:
                           4800 Deer Lake Drive East
                        Jacksonville, Florida 32246-6484
 
                                Mailing Address:
                                 P.O. Box 45289
                        Jacksonville, Florida 32232-5289
                              INDEPENDENT AUDITORS
                             Deloitte & Touche LLP
                                117 Campus Drive
                        Princeton, New Jersey 08540-6400
                                    COUNSEL
   
                                Brown & Wood LLP
    
                             One World Trade Center
                         New York, New York 10048-0557
<PAGE>   50
 
- ------
 
     NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS, OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, IN CONNECTION
WITH THE OFFER CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR MADE, SUCH OTHER
INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED
BY THE TRUST, THE MANAGER OR THE DISTRIBUTOR. THIS PROSPECTUS DOES NOT
CONSTITUTE AN OFFERING IN ANY STATE IN WHICH SUCH OFFERING MAY NOT LAWFULLY BE
MADE.
 
                           -------------------------
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                  PAGE
                                                  ----
<S>                                               <C>
Fee Table......................................     2
Merrill Lynch Select Pricing(SM) System........     4
Financial Highlights...........................     8
Investment Objective and Policies..............     9
  Potential Benefits...........................    11
  Special and Risk Considerations Relating to
    Municipal Bonds............................    11
  Description of Municipal Bonds...............    12
  Call Rights..................................    15
  When-Issued Securities and Delayed Delivery
    Transactions...............................    15
  Financial Futures Transactions and Options...    15
  Repurchase Agreements........................    17
  Investment Restrictions......................    18
Management of the Trust........................    19
  Trustees.....................................    19
  Management and Advisory Arrangements.........    19
  Code of Ethics...............................    20
  Transfer Agency Services.....................    20
Purchase of Shares.............................    21
  Initial Sales Charge Alternatives--
    Class A and Class D Shares.................    23
  Deferred Sales Charge Alternatives--
    Class B and Class C Shares.................    24
  Distribution Plans...........................    27
  Limitations on the Payment of Deferred Sales
    Charges....................................    29
Redemption of Shares...........................    30
  Redemption...................................    30
  Repurchase...................................    30
  Reinstatement Privilege--
    Class A and Class D Shares.................    31
Shareholder Services...........................    31
Fee-Based Programs.............................    34
Portfolio Transactions.........................    34
Distributions and Taxes........................    35
  Distributions................................    35
  Taxes........................................    35
Performance Data...............................    38
Additional Information.........................    39
  Determination of Net Asset Value.............    39
  Organization of the Trust....................    40
  Shareholder Reports..........................    41
  Shareholder Inquiries........................    41
Authorization Form.............................    43
                                     Code # 16858-1096
</TABLE>
    
 
 
         Merrill Lynch
         Maryland Municipal
         Bond Fund
 
         Merrill Lynch Multi-State
         Municipal Series Trust
 
   
         PROSPECTUS       MLYNCH COMPASS
    
         October 29, 1996
         Distributor:
         Merrill Lynch
         Funds Distributor, Inc.
         This prospectus should be
         retained for future reference.
<PAGE>   51
 
STATEMENT OF ADDITIONAL INFORMATION
 
                   MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND
                MERRILL LYNCH MULTI-STATE MUNICIPAL SERIES TRUST
   P.O. BOX 9011, PRINCETON, NEW JERSEY 08543-9011--PHONE NO. (609) 282-2800
 
                           -------------------------
 
     Merrill Lynch Maryland Municipal Bond Fund (the "Fund") is a series of
Merrill Lynch Multi-State Municipal Series Trust (the "Trust"), an open-end
management investment company organized as a Massachusetts business trust. The
investment objective of the Fund is to provide shareholders with as high a level
of income exempt from Federal and Maryland income taxes as is consistent with
prudent investment management. The Fund invests primarily in a non-diversified
portfolio of long-term investment grade obligations issued by or on behalf of
the State of Maryland, its political subdivisions, agencies and
instrumentalities and obligations of other qualifying issuers, such as issuers
located in Puerto Rico, the Virgin Islands and Guam, which pay interest exempt,
in the opinion of bond counsel to the issuer, from Federal and Maryland income
taxes. There can be no assurance that the investment objective of the Fund will
be realized.
 
     Pursuant to the Merrill Lynch Select Pricing(SM) System, the Fund offers
four classes of shares, each with a different combination of sales charges,
ongoing fees and other features. The Merrill Lynch Select Pricing(SM) System
permits an investor to choose the method of purchasing shares that the investor
believes is most beneficial given the amount of the purchase, the length of time
the investor expects to hold the shares and other relevant circumstances.
 
                           -------------------------
 
   
     The Statement of Additional Information of the Fund is not a prospectus and
should be read in conjunction with the prospectus of the Fund, dated October 29,
1996 (the "Prospectus"), which has been filed with the Securities and Exchange
Commission (the "Commission") and can be obtained, without charge, by calling or
by writing the Fund at the above telephone number or address. This Statement of
Additional Information has been incorporated by reference into the Prospectus.
Capitalized terms used but not defined herein have the same meanings as in the
Prospectus.
    
 
                           -------------------------
 
                        FUND ASSET MANAGEMENT -- MANAGER
              MERRILL LYNCH FUNDS DISTRIBUTOR, INC. -- DISTRIBUTOR
 
                           -------------------------
 
   
    The date of this Statement of Additional Information is October 29, 1996
    
<PAGE>   52
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
     The investment objective of the Fund is to provide shareholders with as
high a level of income exempt from Federal and Maryland personal income taxes as
is consistent with prudent investment management. The Fund seeks to achieve its
objective by investing primarily in a portfolio of long-term obligations issued
by or on behalf of the State of Maryland, its political subdivisions, agencies
and instrumentalities and obligations of other qualifying issuers, such as
issuers located in Puerto Rico, the Virgin Islands and Guam, which pay interest
exempt, in the opinion of bond counsel to the issuer, from Federal and Maryland
income taxes. Obligations exempt from Federal income taxes are referred to
herein as "Municipal Bonds" and obligations exempt from both Federal and
Maryland income taxes are referred to as "Maryland Municipal Bonds". Unless
otherwise indicated, references to Municipal Bonds shall be deemed to include
Maryland Municipal Bonds. The Fund anticipates that at all times, except during
temporary defensive periods, it will maintain at least 65% of its total assets
invested in Maryland Municipal Bonds. At times, the Fund will seek to hedge its
portfolio through the use of futures transactions to reduce volatility in the
net asset value of Fund shares. Reference is made to "Investment Objective and
Policies" in the Prospectus for a discussion of the investment objective and
policies of the Fund.
 
     Municipal Bonds may include general obligation bonds of the State and its
political subdivisions, revenue bonds of utility systems, highways, bridges,
port and airport facilities, colleges, hospitals, housing facilities, etc., and
industrial development bonds or private activity bonds. The interest on such
obligations may bear a fixed rate or be payable at a variable or floating rate.
The Municipal Bonds purchased by the Fund will be primarily what are commonly
referred to as "investment grade" securities, which are obligations rated at the
time of purchase within the four highest quality ratings as determined by either
Moody's Investors Service, Inc. ("Moody's") (currently Aaa, Aa, A and Baa),
Standard & Poor's Ratings Group ("Standard & Poor's") (currently AAA, AA, A and
BBB) or Fitch Investors Service, Inc. ("Fitch") (currently AAA, AA, A and BBB).
If unrated, such securities will possess creditworthiness comparable, in the
opinion of the manager of the Fund, Fund Asset Management, L.P. (the "Manager"),
to other obligations in which the Fund may invest.
 
   
     The Fund ordinarily does not intend to realize investment income not exempt
from Federal and Maryland income taxes. However, to the extent that suitable
Maryland Municipal Bonds are not available for investment by the Fund, the Fund
may purchase Municipal Bonds, which are bonds issued by other states, their
agencies and instrumentalities, the interest income on which is exempt, in the
opinion of bond counsel, from Federal but not Maryland taxation. The Fund also
may invest in securities not issued by or on behalf of a state or territory or
by an agency or instrumentality thereof, if the Fund nevertheless believes such
securities to be exempt from Federal income taxation ("Non-Municipal Tax-Exempt
Securities"). Non-Municipal Tax-Exempt Securities may include securities issued
by other investment companies that invest in municipal bonds, to the extent
permitted by applicable law. Other Non-Municipal Tax-Exempt Securities could
include trust certificates or other instruments evidencing interests in one or
more long-term municipal securities.
    
 
     Except when acceptable securities are unavailable as determined by the
Manager, the Fund, under normal circumstances, will invest at least 65% of its
total assets in Maryland Municipal Bonds. For temporary periods or to provide
liquidity, the Fund has the authority to invest as much as 35% of its total
assets in tax-exempt or taxable money market obligations with a maturity of one
year or less (such short-term obligations being referred to herein as "Temporary
Investments"), except that taxable Temporary Investments shall not exceed 20% of
the Fund's net assets. The Fund at all times will have at least 80% of its net
assets invested in
 
                                        2
<PAGE>   53
 
securities exempt from Federal income taxation. However, interest received on
certain otherwise tax-exempt securities which are classified as "private
activity bonds" (in general bonds that benefit non-governmental entities) may be
subject to an alternative minimum tax. The Fund may purchase such private
activity bonds. See "Distributions and Taxes". In addition, the Fund reserves
the right to invest temporarily a greater portion of its assets in Temporary
Investments for defensive purposes, when, in the judgment of the Manager, market
conditions warrant. The investment objective of the Fund set forth in this
paragraph is a fundamental policy of the Fund which may not be changed without a
vote of a majority of the outstanding shares of the Fund. The Fund's hedging
strategies are not fundamental policies and may be modified by the Trustees of
the Trust without the approval of the Fund's shareholders.
 
     Municipal Bonds may at times be purchased or sold on a delayed delivery
basis or a when-issued basis. These transactions arise when securities are
purchased or sold by the Fund with payment and delivery taking place in the
future, often a month or more after the purchase. The payment obligation and the
interest rate are each fixed at the time the buyer enters into the commitment.
The Fund will make only commitments to purchase such securities with the
intention of actually acquiring the securities, but the Fund may sell these
securities prior to the settlement date if it is deemed advisable. Purchasing
Municipal Bonds on a when-issued basis involves the risk that the yields
available in the market when the delivery takes place actually may be higher
than those obtained in the transaction itself; if yields so increase, the value
of the when-issued obligations generally will decrease. The Fund will maintain a
separate account at its custodian bank consisting of cash, cash equivalents or
high-grade, liquid Municipal Bonds or Temporary Investments (valued on a daily
basis) equal at all times to the amount of the when-issued commitment.
 
   
     The Fund may invest in Municipal Bonds (and Non-Municipal Tax-Exempt
Securities) the return on which is based on a particular index of value or
interest rates. For example, the Fund may invest in Municipal Bonds that pay
interest based on an index of Municipal Bond interest rates or based on the
value of gold or some other commodity. The principal amount payable upon
maturity of certain Municipal Bonds also may be based on the value of an index.
Also, the Fund may invest in so-called "inverse floating obligations" or
"residual interest bonds" on which the interest rates typically decline as
market rates increase and increase as market rates decline. For example, to the
extent the Fund invests in these types of Municipal Bonds, the Fund's return on
such Municipal Bonds will be subject to risk with respect to the value of the
particular index, which may include reduced or eliminated interest payments and
losses of invested principal. Such securities have the effect of providing a
degree of investment leverage, since they may increase or decrease in value in
response to changes, as an illustration, in market interest rates at a rate
which is a multiple (typically two) of the rate at which fixed-rate long-term
tax-exempt securities increase or decrease in response to such changes. As a
result, the market values of such securities will generally be more volatile
than the market values of fixed-rate tax-exempt securities. To seek to limit the
volatility of these securities, the Fund may purchase inverse floating
obligations with shorter term maturities or which contain limitations on the
extent to which the interest rate may vary. The Manager believes that indexed
and inverse floating obligations represent flexible portfolio management
instruments for the Fund which allow the Fund to seek potential investment
rewards, hedge other portfolio positions or to vary the degree of investment
leverage relatively efficiently under different market conditions. Certain
investments in such obligations may be illiquid. The Fund may not invest in such
illiquid obligations if such investments, together with other illiquid
investments, would exceed 15% of the Fund's total assets. The Manager believes,
however, that indexed and inverse floating obligations represent flexible
portfolio management instruments for the Fund which allow the Fund to seek
potential investment
    
 
                                        3
<PAGE>   54
 
   
rewards, hedge other portfolio positions or vary the degree of investment
leverage relatively efficiently under different market conditions.
    
 
   
     The Fund may purchase a Municipal Bond issuer's right to call all or a
portion of such Municipal Bond for mandatory tender for purchase (a "Call
Right"). A holder of a Call Right may exercise such right to require a mandatory
tender for the purchase of related Municipal Bonds, subject to certain
conditions. A Call Right that is not exercised prior to the maturity of the
related Municipal Bond will expire without value. The economic effect of holding
both the Call Right and the related Municipal Bond is identical to holding a
Municipal Bond as a non-callable security. Certain investments in such
obligations may be illiquid. The Fund may not invest in such illiquid
obligations if such investments, together with other illiquid investments, would
exceed 15% of the Fund's total assets.
    
 
   
     The Fund may invest up to 20% of its total assets in Municipal Bonds which
are rated below Baa by Moody's or below BBB by Standard & Poor's or Fitch or
which, in the Manager's judgment, possess similar credit characteristics ("high
yield securities"). See Appendix II --"Ratings of Municipal Bonds" for
additional information regarding ratings of debt securities. The Manager
considers the ratings assigned by Standard & Poor's, Moody's or Fitch as one of
several factors in its independent credit analysis of issuers.
    
 
   
     High yield securities are considered by Standard & Poor's, Moody's and
Fitch to have varying degrees of speculative characteristics. Consequently,
although high yield securities can be expected to provide higher yields, such
securities may be subject to greater market price fluctuations and risk of loss
of principal than lower-yielding, higher-rated debt securities. Investments in
high yield securities will be made only when, in the judgment of the Manager,
such securities provide attractive total return potential relative to the risk
of such securities, as compared to higher quality debt securities. The Fund
generally will not invest in debt securities in the lowest rating categories
(those rated CC or lower by Standard & Poor's or Fitch or Ca or lower by
Moody's) unless the Manager believes that the financial condition of the issuer
or the protection afforded the particular securities is stronger than would
otherwise be indicated by such low ratings.
    
 
   
     Issuers or obligors of high yield securities may be highly leveraged and
may not have available to them more traditional methods of financing. Therefore,
the risks associated with acquiring the securities of such issuers generally are
greater than is the case with higher rated securities. For example, during an
economic downturn or a sustained period of rising interest rates, issuers of
high yield securities may be more likely to experience financial stress,
especially if such issuers are highly leveraged. In addition, the market for
high yield municipal securities is relatively new and has not yet weathered a
major economic recession, and it is unknown what effects such a recession might
have on such securities. During such periods, such issuers may not have
sufficient revenues to meet their interest payment obligations. The issuer's
ability to service its debt obligations also may be adversely affected by
specific issuer developments, or the issuer's inability to meet specific
projected business forecasts, or the unavailability of additional financing. The
risk of loss due to default by the issuer is significantly greater for the
holders of high yield securities because such securities may be unsecured and
may be subordinated to other creditors of the issuer.
    
 
   
     High yield securities frequently have call or redemption features that
would permit an issuer to repurchase the security from the Fund. If a call were
exercised by the issuer during a period of declining interest rates, the Fund
likely would have to replace such called security with a lower yielding
security, thus decreasing the net investment income to the Fund and dividends to
shareholders.
    
 
                                        4
<PAGE>   55
 
   
     The Fund may have difficulty disposing of certain high yield securities
because there may be a thin trading market for such securities. Because not all
dealers maintain markets in all high yield securities, there is no established
secondary market for many of these securities, and the Fund anticipates that
such securities could be sold only to a limited number of dealers or
institutional investors. To the extent that a secondary trading market for high
yield securities does exist, it generally is not as liquid as the secondary
market for higher rated securities. Reduced secondary market liquidity may have
an adverse impact on market price and the Fund's ability to dispose of
particular issues when necessary to meet the Fund's liquidity needs or in
response to a specific economic event such as a deterioration in the
creditworthiness of the issuer. Reduced secondary market liquidity for certain
securities also may make it more difficult for the Fund to obtain accurate
market quotations for purposes of valuing the Fund's portfolio. Market
quotations generally are available on many high yield securities only from a
limited number of dealers and may not necessarily represent firm bids of such
dealers or prices for actual sales.
    
 
   
     It is expected that a significant portion of the high yield securities
acquired by the Fund will be purchased upon issuance, which may involve special
risks because the securities so acquired are new issues. In such instances the
Fund may be a substantial purchaser of the issue and therefore have the
opportunity to participate in structuring the terms of the offering. Although
this may enable the Fund to seek to protect itself against certain of such
risks, the considerations discussed herein would nevertheless remain applicable.
    
 
   
     Adverse publicity and investor perceptions, which may not be based on
fundamental analysis, also may decrease the value and liquidity of high yield
securities, particularly in a thinly traded market. Factors adversely affecting
the market value of high yield securities are likely to affect adversely the
Fund's net asset value. In addition, the Fund may incur additional expenses to
the extent that it is required to seek recovery upon a default on a portfolio
holding or participate in the restructuring of the obligation.
    
 
            DESCRIPTION OF MUNICIPAL BONDS AND TEMPORARY INVESTMENTS
 
     Set forth below is a description of the Municipal Bonds and Temporary
Investments in which the Fund may invest. A more complete discussion concerning
futures and options transactions is set forth under "Investment Objective and
Policies" in the Prospectus. Information with respect to ratings assigned to
tax-exempt obligations which the Fund may purchase is set forth in Appendix II
to this Statement of Additional Information.
 
DESCRIPTION OF MUNICIPAL BONDS
 
     Municipal Bonds include debt obligations issued to obtain funds for various
public purposes, including construction of a wide range of public facilities,
refunding of outstanding obligations and obtaining funds for general operating
expenses and loans to other public institutions and facilities. In addition,
certain types of bonds are issued by or on behalf of public authorities to
finance various privately owned or operated facilities, including certain
facilities for the local furnishing of electric energy or gas, sewage
facilities, solid waste disposal facilities and other specialized facilities.
Such obligations are included within the term Municipal Bonds if the interest
paid thereon is, in the opinion of bond counsel, excluded from gross income for
Federal income tax purposes and, in the case of Maryland Municipal Bonds, exempt
from Maryland income taxes. Other types of industrial development bonds or
private activity bonds, the proceeds of which are used for the construction,
equipment or improvement of privately operated industrial or commercial
facilities, may
 
                                        5
<PAGE>   56
 
constitute Municipal Bonds, although the current Federal tax laws place
substantial limitations on the size of such issues.
 
   
     The two principal classifications of Municipal Bonds are "general
obligation" bonds and "revenue" bonds, which latter category includes industrial
development bonds ("IDBs") and, for bonds issued after August 15, 1986, private
activity bonds. General obligation bonds are secured by the issuer's pledge of
faith, credit and taxing power for the payment of principal and interest.
Revenue 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 or limited tax or other specific revenue source such as payments from
the user of the facility being financed. IDBs and, in the case of bonds issued
after August 15, 1986, private activity bonds, are in most cases revenue bonds
and generally do not constitute the pledge of the credit or taxing power of the
issuer of such bonds. Generally, the payment of the principal of and interest on
such bonds depends solely on the ability of the user of the facility financed by
the bonds to meet its financial obligations and the pledge, if any, of real and
personal property so financed as security for such payment, unless a line of
credit, bond insurance or other security is furnished. The Fund may invest in
Municipal Bonds that are so-called "moral obligation" bonds, which are normally
issued by special purpose public authorities. If an issuer of moral obligation
bonds is unable to meet its obligations, repayment of such bonds becomes a moral
commitment, but not a legal obligation, of the state or municipality in
question.
    
 
   
     Also included within the general category of Municipal Bonds are
participation certificates issued by government authorities or entities to
finance the acquisition or construction of equipment, land and/or facilities.
The certificates represent participations in a lease, an installment purchase
contract or a conditional sales contract (hereinafter collectively called "lease
obligations") relating to such equipment, land or facilities. Although lease
obligations do not constitute general obligations of the issuer for which the
issuer's unlimited taxing power is pledged, a lease obligation is frequently
backed by the issuer's covenant to budget for, appropriate and make the payments
due under the lease obligation. However, certain lease obligations contain
"non-appropriation" clauses which provide that the issuer has no obligation to
make lease or installment purchase payments in future years unless money is
appropriated for such purpose on a yearly basis. Although "non-appropriation"
lease obligations are secured by the leased property, disposition of the
property in the event of foreclosure might prove difficult. These securities
represent a relatively new type of financing that has not yet developed the
depth of marketability associated with more conventional securities. Certain
investments in lease obligations may be illiquid. The Fund may not invest in
illiquid lease obligations if such investments, together with all other illiquid
investments, would exceed 15% of the Fund's total assets. The Fund may, however,
invest without regard to such limitation in lease obligations which the Manager,
pursuant to the guidelines which have been adopted by the Board of Trustees and
subject to the supervision of the Board of Trustees, determines to be liquid.
The Manager will deem lease obligations liquid if they are publicly offered and
have received an investment grade rating of Baa or better by Moody's, or BBB or
better by Standard & Poor's or Fitch. Unrated lease obligations, or those rated
below investment grade, will be considered liquid if the obligations come to the
market through an underwritten public offering and at least two dealers are
willing to give competitive bids. In reference to the latter, the Manager must,
among other things, also review the creditworthiness of the municipality
obligated to make payment under the lease obligation and make certain specified
determinations based on such factors as the existence of a rating or credit
enhancement such as insurance, the frequency of trades or quotes for the
obligation and the willingness of dealers to make a market in the obligation.
    
 
                                        6
<PAGE>   57
 
     Yields on Municipal Bonds are dependent on a variety of factors, including
the general condition of the money market and of the municipal bond market, the
size of a particular offering, the financial condition of the issuer, the
general conditions of the Municipal Bond market, the maturity of the obligation,
and the rating of the issue. The ability of the Fund to achieve its investment
objective also is dependent on the continuing ability of the issuers of the
bonds in which the Fund invests to meet their obligations for the payment of
interest and principal when due. There are variations in the risks involved in
holding Municipal Bonds, both within a particular classification and between
classifications, depending on numerous factors. Furthermore, the rights of
owners of Municipal Bonds and the obligations of the issuer of such Municipal
Bonds may be subject to applicable bankruptcy, insolvency and similar laws and
court decisions affecting the rights of creditors generally and to general
equitable principles, which may limit the enforcement of certain remedies.
 
DESCRIPTION OF TEMPORARY INVESTMENTS
 
     The Fund may invest in short-term tax-free and taxable securities subject
to the limitations set forth under "Investment Objective and Policies". The
tax-exempt money market securities may include municipal notes, municipal
commercial paper, municipal bonds with remaining maturity of less than one year,
variable rate demand notes and participations therein. Municipal notes include
tax anticipation notes, bond anticipation notes and grant anticipation notes.
Anticipation notes are sold as interim financing in anticipation of tax
collection, bond sales, government grants or revenue receipts. Municipal
commercial paper refers to short-term unsecured promissory notes generally
issued to finance short-term credit needs. The taxable money market securities
in which the Fund may invest as Temporary Investments consist of U.S. Government
securities, U.S. Government agency securities, domestic bank or savings
institution certificates of deposit and bankers' acceptances, short-term
corporate debt securities such as commercial paper, and repurchase agreements.
These Temporary Investments must have a stated maturity not in excess of one
year from the date of purchase.
 
   
     Variable rate demand obligations ("VRDOs") are tax-exempt obligations which
contain a floating or variable interest rate adjustment formula and an
unconditional right of demand on the part of the holder thereof to receive
payment of the unpaid principal balance plus accrued interest upon a short
notice period not to exceed seven days. There is, however, the possibility that
because of default or insolvency the demand feature of VRDOs and Participating
VRDOs, described below, may not be honored. The interest rates are adjustable at
intervals (ranging from daily to up to one year) to some prevailing market rate
for similar investments, such adjustment formula being calculated to maintain
the market value of the VRDO at approximately the par value of the VRDOs on the
adjustment date. The adjustments typically are based upon the Public Securities
Association Index or some other appropriate interest rate adjustment index. The
Fund may invest in all types of tax-exempt instruments currently outstanding or
to be issued in the future which satisfy the short-term maturity and quality
standards of the Fund.
    
 
     The Fund also may invest in VRDOs in the form of participation interests
("Participating VRDOs") in variable rate tax-exempt obligations held by a
financial institution, typically a commercial bank. Participating VRDOs provide
the Fund with a specified undivided interest (up to 100%) of the underlying
obligation and the right to demand payment of the unpaid principal balance plus
accrued interest on the Participating VRDOs from the financial institution upon
a specified number of days' notice, not to exceed seven days. In addition, a
Participating VRDO is backed by an irrevocable letter of credit or guaranty of
the financial institution. The Fund would have an undivided interest in the
underlying obligation and thus participate on the
 
                                        7
<PAGE>   58
 
same basis as the financial institution in such obligation except that the
financial institution typically retains fees out of the interest paid on the
obligation for servicing the obligation, providing the letter of credit and
issuing the repurchase commitment. The Fund has been advised by its counsel that
the Fund should be entitled to treat the income received on Participating VRDOs
as interest from tax-exempt obligations.
 
     VRDOs that contain an unconditional right of demand to receive payment of
the unpaid principal balance plus accrued interest on a notice period exceeding
seven days may be deemed to be illiquid securities. A VRDO with a demand notice
period exceeding seven days therefore will be subject to the Fund's restriction
on illiquid investments unless, in the judgment of the Trustees, such VRDO is
liquid. The Trustees may adopt guidelines and delegate to the Manager the daily
function of determining and monitoring liquidity of such VRDOs. The Trustees,
however, will retain sufficient oversight and will be ultimately responsible for
such determination.
 
   
     The Trust has established the following standards with respect to money
market securities and VRDOs in which the Fund invests. Commercial paper
investments at the time of purchase must be rated A-1 through A-3 by Standard &
Poor's, Prime-1 through Prime-3 by Moody's or F-1 through F-3 by Fitch or, if
not rated, issued by companies having an outstanding debt issue rated at least A
by Standard & Poor's, Fitch or Moody's. Investments in corporate bonds and
debentures (which must have maturities at the date of purchase of one year or
less) must be rated at the time of purchase at least A by Standard & Poor's,
Moody's or Fitch. Notes and VRDOs at the time of purchase must be rated SP-1/A-1
through SP-2/A-3 by Standard & Poor's, MIG-l/VMIG-1 through MIG-4/VMIG-4 by
Moody's or F-1 through F-3 by Fitch. Temporary Investments, if not rated, must
be of comparable quality to securities rated in the above rating categories in
the opinion of the Manager. The Fund may not invest in any security issued by a
commercial bank or a savings institution unless the bank or institution is
organized and operating in the United States, has total assets of at least one
billion dollars and is a member of the Federal Deposit Insurance Corporation
("FDIC"), except that up to 10% of total assets may be invested in certificates
of deposit of small institutions if such certificates are insured fully by the
FDIC.
    
 
REPURCHASE AGREEMENTS
 
     The Fund may invest in securities pursuant to repurchase agreements.
Repurchase agreements may be entered into only with a member bank of the Federal
Reserve System or a primary dealer in U.S. Government securities or an affiliate
thereof. Under such agreements, the seller agrees, upon entering into the
contract, to repurchase the security from the Fund at a mutually agreed upon
time and price, thereby determining the yield during the term of the agreement.
This results in a fixed rate of return insulated from market fluctuations during
such period. In repurchase agreements, the prices at which the trades are
conducted do not reflect accrued interest on the underlying obligations. Such
agreements usually cover short periods, such as under one week. Repurchase
agreements may be construed to be collateralized loans by the purchaser to the
seller secured by the securities transferred to the purchaser. In the case of a
repurchase agreement, the Fund will require the seller to provide additional
collateral if the market value of the securities falls below the repurchase
price at any time during the term of the repurchase agreement. In the event of
default by the seller under a repurchase agreement construed to be a
collateralized loan, the underlying securities are not owned by the Fund but
only constitute collateral for the seller's obligation to pay the repurchase
price. Therefore, the Fund may suffer time delays and incur costs or possible
losses in connection with the disposition of the collateral. In the event of a
default under such a repurchase agreement, instead of the contractual fixed rate
of return, the
 
                                        8
<PAGE>   59
 
   
rate of return to the Fund will depend on intervening fluctuations of the market
value of such security and the accrued interest on the security. In such event,
the Fund would have rights against the seller for breach of contract with
respect to any losses arising from market fluctuations following the failure of
the seller to perform. The Fund may not invest in repurchase agreements maturing
in more than seven days if such investments, together with all other illiquid
investments, would exceed 15% of the Fund's total assets.
    
 
     In general, for Federal income tax purposes, repurchase agreements are
treated as collateralized loans secured by the securities "sold". Therefore,
amounts earned under such agreements will not be considered tax-exempt interest.
 
FINANCIAL FUTURES TRANSACTIONS AND OPTIONS
 
     Reference is made to the discussion concerning futures transactions under
"Investment Objective and Policies" in the Prospectus. Set forth below is
additional information concerning these transactions.
 
     As described in the Prospectus, the Fund may purchase and sell exchange
traded financial futures contracts ("financial futures contracts") to hedge its
portfolio of Municipal Bonds against declines in the value of such securities
and to hedge against increases in the cost of securities the Fund intends to
purchase. However, any transactions involving financial futures or options (or
puts or calls associated therewith) will be in accordance with the Fund's
investment policies and limitations. To hedge its portfolio, the Fund may take
an investment position in a futures contract which will move in the opposite
direction from the portfolio position being hedged. While the Fund's use of
hedging strategies is intended to moderate capital changes in portfolio holdings
and thereby reduce the volatility of the net asset value of Fund shares, the
Fund anticipates that its net asset value will fluctuate. Set forth below is
information concerning futures transactions.
 
   
     Description of Futures Contracts.  A futures contract is an agreement
between two parties to buy and sell a security, or in the case of an index-based
futures contract, to make and accept a cash settlement for a set price on a
future date. A majority of transactions in futures contracts, however, do not
result in the actual delivery of the underlying instrument or cash settlement,
but are settled through liquidation, i.e., by entering into an offsetting
transaction. Futures contracts have been designed by boards of trade which have
been designated "contracts markets" by the Commodity Futures Trading Commission
("CFTC").
    
 
     The purchase or sale of a futures contract differs from the purchase or
sale of a security in that no price or premium is paid or received. Instead, an
amount of cash or securities acceptable to the broker and the relevant contract
market, which varies, but is generally about 5% of the contract amount, must be
deposited with the broker. This amount is known as "initial margin" and
represents a "good faith" deposit assuring the performance of both the purchaser
and seller under the futures contract. Subsequent payments to and from the
broker, called "variation margin", are required to be made on a daily basis as
the price of the futures contract fluctuates making the long and short positions
in the futures contract more or less valuable, a process known as "mark to the
market". At any time prior to the settlement date of the futures contract, the
position may be closed out by taking an opposite position which will operate to
terminate the position in the futures contract. A final determination of
variation margin is then made, additional cash is required to be paid to or
released by the broker, and the purchaser realizes a loss or gain. In addition,
a nominal commission is paid on each completed sale transaction.
 
                                        9
<PAGE>   60
 
     The Fund may deal in financial futures contracts based on a long-term
municipal bond index developed by the Chicago Board of Trade ("CBT") and The
Bond Buyer (the "Municipal Bond Index"). The Municipal Bond Index is comprised
of 40 tax-exempt municipal revenue and general obligations bonds. Each bond
included in the Municipal Bond Index must be rated A or higher by Moody's or
Standard & Poor's and must have a remaining maturity of 19 years or more. Twice
a month new issues satisfying the eligibility requirements are added to, and an
equal number of old issues are deleted from, the Municipal Bond Index. The value
of the Municipal Bond Index is computed daily according to a formula based on
the price of each bond in the Municipal Bond Index, as evaluated by six
dealer-to-dealer brokers.
 
     The Municipal Bond Index futures contract is traded only on the CBT. Like
other contract markets, the CBT assures performance under futures contracts
through a clearing corporation, a nonprofit organization managed by the exchange
membership which also is responsible for handling daily accounting of deposits
or withdrawals of margin.
 
     As described in the Prospectus, the Fund may purchase and sell financial
futures contracts on U.S. Government securities as a hedge against adverse
changes in interest rates as described below. With respect to U.S. Government
securities, currently there are financial futures contracts based on long-term
U.S. Treasury bonds, Treasury notes, Government National Mortgage Association
("GNMA") Certificates and three-month U.S. Treasury bills. The Fund may purchase
and write call and put options on futures contracts on U.S. Government
securities in connection with its hedging strategies.
 
     Subject to policies adopted by the Trustees, the Fund also may engage in
other futures contracts transactions such as futures contracts on other
municipal bond indices which may become available if the Manager and the
Trustees should determine that there is normally a sufficient correlation
between the prices of such futures contracts and the Municipal Bonds in which
the Fund invests to make such hedging appropriate.
 
   
     Futures Strategies.  The Fund may sell a financial futures contract (i.e.,
assume a short position) in anticipation of a decline in the value of its
investments in Municipal Bonds resulting from an increase in interest rates or
otherwise. The risk of decline could be reduced without employing futures as a
hedge by selling such Municipal Bonds and either reinvesting the proceeds in
securities with shorter maturities or by holding assets in cash. This strategy,
however, entails increased transaction costs in the form of dealer spreads and
typically would reduce the average yield of the Fund's portfolio securities as a
result of the shortening of maturities. The sale of futures contracts provides
an alternative means of hedging against declines in the value of its investments
in Municipal Bonds. As such values decline, the value of the Fund's positions in
the futures contracts will tend to increase, thus offsetting all or a portion of
the depreciation in the market value of the Fund's Municipal Bond investments
which are being hedged. While the Fund will incur commission expenses in selling
and closing out futures positions, commissions on futures transactions are lower
than transaction costs incurred in the purchase and sale of Municipal Bonds. In
addition, the ability of the Fund to trade in the standardized contracts
available in the futures markets may offer a more effective defensive position
than a program to reduce the average maturity of the portfolio securities due to
the unique and varied credit and technical characteristics of the municipal debt
instruments available to the Fund. Employing futures as a hedge also may permit
the Fund to assume a defensive posture without reducing the yield on its
investments beyond any amounts required to engage in futures trading.
    
 
                                       10
<PAGE>   61
 
     When the Fund intends to purchase Municipal Bonds, the Fund may purchase
futures contracts as a hedge against any increase in the cost of such Municipal
Bonds, resulting from an increase in interest rates or otherwise, that may occur
before such purchases can be effected. Subject to the degree of correlation
between the Municipal Bonds and the futures contracts, subsequent increases in
the cost of Municipal Bonds should be reflected in the value of the futures held
by the Fund. As such purchases are made, an equivalent amount of futures
contracts will be closed out. Due to changing market conditions and interest
rate forecasts, however, a futures position may be terminated without a
corresponding purchase of portfolio securities.
 
     Call Options on Futures Contracts.  The Fund also may purchase and sell
exchange traded call and put options on financial futures contracts on U.S.
Government securities. The purchase of a call option on a futures contract is
analogous to the purchase of a call option on an individual security. Depending
on the pricing of the option compared to either the futures contract on which it
is based, or on the price of the underlying debt securities, it may or may not
be less risky than ownership of the futures contract or underlying debt
securities. Like the purchase of a futures contract, the Fund will purchase a
call option on a futures contract to hedge against a market advance when the
Fund is not fully invested.
 
     The writing of a call option on a futures contract constitutes a partial
hedge against declining prices of the securities which are deliverable upon
exercise of the futures contract. If the futures price at expiration is below
the exercise price, the Fund will retain the full amount of the option premium
which provides a partial hedge against any decline that may have occurred in the
Fund's portfolio holdings.
 
     Put Options on Futures Contracts.  The purchase of options on a futures
contract is analogous to the purchase of protective put options on portfolio
securities. The Fund will purchase put options on futures contracts to hedge the
Fund's portfolio against the risk of rising interest rates.
 
     The writing of a put option on a futures contract constitutes a partial
hedge against increasing prices of the securities which are deliverable upon
exercise of the futures contract. If the futures price at expiration is higher
than the exercise price, the Fund will retain the full amount of the option
premium which provides a partial hedge against any increase in the price of
Municipal Bonds which the Fund intends to purchase.
 
     The writer of an option on a futures contract is required to deposit
initial and variation margin pursuant to requirements similar to those
applicable to futures contracts. Premiums received from the writing of an option
will be included in initial margin. The writing of an option on a futures
contract involves risks similar to those relating to futures contracts.
                            ------------------------
 
   
     The Trust has received an order from the Commission exempting it from the
provisions of Section 17(f) and Section 18(f) of the Investment Company Act of
1940, as amended (the "1940 Act"), in connection with its strategy of investing
in futures contracts. Section 17(f) relates to the custody of securities and
other assets of an investment company and may be deemed to prohibit certain
arrangements between the Trust and commodities brokers with respect to initial
and variation margin. Section 18(f) of the 1940 Act prohibits an open-end
investment company such as the Trust from issuing a "senior security" other than
a borrowing from a bank. The staff of the Commission has in the past indicated
that a futures contract may be a "senior security" under the 1940 Act.
    
 
     Restrictions on Use of Futures Transactions.  Regulations of the CFTC
applicable to the Fund require that all of the Fund's futures transactions
constitute bona fide hedging transactions and that the Fund
 
                                       11
<PAGE>   62
 
purchase and sell futures contracts and options thereon (i) for bona fide
hedging purposes, and (ii) for non-hedging purposes, if the aggregate initial
margin and premiums required to establish positions in such contracts and
options does not exceed 5% of the liquidation value of the Fund's portfolio
assets after taking into account unrealized profits and unrealized losses on any
such contracts and options. (However, the Fund intends to engage in options and
futures transactions only for hedging purposes.) Margin deposits may consist of
cash or securities acceptable to the broker and the relevant contract market.
 
   
     When the Fund purchases futures contracts or a call option with respect
thereto or writes a put option on a futures contract, an amount of cash, cash
equivalents or liquid securities will be deposited in a segregated account with
the Fund's custodian so that the amount so segregated, plus the amount of
initial and variation margin held in the account of its broker, equals the
market value of the futures contract, thereby ensuring that the use of such
futures is unleveraged.
    
 
     Risk Factors in Futures Transactions and Options.  Investment in futures
contracts involves the risk of imperfect correlation between movements in the
price of the futures contract and the price of the security being hedged. The
hedge will not be fully effective when there is imperfect correlation between
the movements in the prices of two financial instruments. For example, if the
price of the futures contract moves more than the price of the hedged security,
the Fund will experience either a loss or gain on the futures contract which is
not offset completely by movements in the price of the hedged securities. To
compensate for imperfect correlations, the Fund may purchase or sell futures
contracts in a greater dollar amount than the hedged securities if the
volatility of the hedged securities is historically greater than the volatility
of the futures contracts. Conversely, the Fund may purchase or sell fewer
futures contracts if the volatility of the price of the hedged securities is
historically less than that of the futures contracts.
 
     The particular municipal bonds comprising the index underlying the
Municipal Bond Index financial futures contract may vary from the Municipal
Bonds held by the Fund. As a result, the Fund's ability to hedge effectively all
or a portion of the value of its Municipal Bonds through the use of such
financial futures contracts will depend in part on the degree to which price
movements in the index underlying the financial futures contract correlate with
the price movements of the Municipal Bonds held by the Fund. The correlation may
be affected by disparities in the average maturity, ratings, geographical mix or
structure of the Fund's investments as compared to those comprising the
Municipal Bond Index, and general economic or political factors. In addition,
the correlation between movements in the value of the Municipal Bond Index may
be subject to change over time as additions to and deletions from the Municipal
Bond Index alter its structure. The correlation between futures contracts on
U.S. Government securities and the Municipal Bonds held by the Fund may be
adversely affected by similar factors and the risk of imperfect correlation
between movements in the prices of such futures contracts and the prices of the
Municipal Bonds held by the Fund may be greater.
 
     The Fund expects to liquidate a majority of the futures contracts it enters
into through offsetting transactions on the applicable contract market. There
can be no assurance, however, that a liquid secondary market will exist for any
particular futures contract at any specific time. Thus, it may not be possible
to close out a futures position. In the event of adverse price movements, the
Fund would continue to be required to make daily cash payments of variation
margin. In such situations, if the Fund has insufficient cash, it may be
required to sell portfolio securities to meet daily variation margin
requirements at a time when it may be disadvantageous to do so. The inability to
close out futures positions also could have an adverse impact on the Fund's
ability to hedge effectively its investments in Municipal Bonds. The Fund will
enter into a futures
 
                                       12
<PAGE>   63
 
position only if, in the judgment of the Manager, there appears to be an
actively traded secondary market for such futures contracts.
 
     The successful use of transactions in futures and related options also
depends on the ability of the Manager to forecast correctly the direction and
extent of interest rate movements within a given time frame. To the extent
interest rates remain stable during the period in which a futures contract or
option is held by the Fund or such rates move in a direction opposite to that
anticipated, the Fund may realize a loss on the hedging transaction which is not
fully or partially offset by an increase in the value of portfolio securities.
As a result, the Fund's total return for such period may be less than if it had
not engaged in the hedging transaction.
 
     Because of low initial margin deposits made on the opening of a futures
position, futures transactions involve substantial leverage. As a result,
relatively small movements in the price of the futures contracts can result in
substantial unrealized gains or losses. Because the Fund will engage in the
purchase and sale of futures contracts solely for hedging purposes, however, any
losses incurred in connection therewith should, if the hedging strategy is
successful, be offset in whole or in part by increases in the value of
securities held by the Fund or decreases in the price of securities the Fund
intends to acquire.
 
     The amount of risk the Fund assumes when it purchases an option on a
futures contract is the premium paid for the option plus related transaction
costs. In addition to the correlation risks discussed above, the purchase of an
option on a futures contract also entails the risk that changes in the value of
the underlying futures contract will not be reflected fully in the value of the
option purchased.
 
     Municipal Bond Index futures contracts were approved for trading in 1986.
Trading in such futures contracts may tend to be less liquid than that in other
futures contracts. The trading of futures contracts also is subject to certain
market risks, such as inadequate trading activity, which could at times make it
difficult or impossible to liquidate existing positions.
 
                            INVESTMENT RESTRICTIONS
 
     The Fund has adopted a number of fundamental and non-fundamental
restrictions and policies relating to the investment of its assets and its
activities. The fundamental policies set forth below may not be changed without
the approval of the holders of a majority of the Fund's outstanding voting
securities (which for this purpose and under the 1940 Act means the lesser of
(i) 67% of the Fund's shares present at a meeting at which more than 50% of the
outstanding shares of the Fund are represented or (ii) more than 50% of the
Fund's outstanding shares). The Fund may not:
 
   
          1. Invest more than 25% of its assets, taken at market value at the
     time of each investment, in the securities of issuers in any particular
     industry (excluding the U.S. Government and its agencies and
     instrumentalities). For purposes of this restriction, states,
     municipalities and their political subdivisions are not considered part of
     any industry.
    
 
          2. Make investments for the purpose of exercising control or
     management.
 
          3. Purchase or sell real estate, except that, to the extent permitted
     by applicable law, the Fund may invest in securities directly or indirectly
     secured by real estate or interests therein or issued by companies which
     invest in real estate or interests therein.
 
                                       13
<PAGE>   64
 
          4. Make loans to other persons, except that the acquisition of bonds,
     debentures or other corporate debt securities and investment in government
     obligations, commercial paper, pass-through instruments, certificates of
     deposit, bankers' acceptances, repurchase agreements or any similar
     instruments shall not be deemed to be the making of a loan, and except
     further that the Fund may lend its portfolio securities, provided that the
     lending of portfolio securities may be made only in accordance with
     applicable law and the guidelines set forth in the Fund's Prospectus and
     Statement of Additional Information, as they may be amended from time to
     time.
 
          5. Issue senior securities to the extent such issuance would violate
     applicable law.
 
   
          6. Borrow money, except that (i) the Fund may borrow from banks (as
     defined in the 1940 Act) in amounts up to 33 1/3% of its total assets
     (including the amount borrowed), (ii) the Fund may, to the extent permitted
     by applicable law, borrow up to an additional 5% of its total assets for
     temporary purposes, (iii) the Fund may obtain such short-term credit as may
     be necessary for the clearance of purchases and sales of portfolio
     securities and (iv) the Fund may purchase securities on margin to the
     extent permitted by applicable law. The Fund may not pledge its assets
     other than to secure such borrowings or, to the extent permitted by the
     Fund's investment policies as set forth in its Prospectus and Statement of
     Additional Information, as they may be amended from time to time, in
     connection with hedging transactions, short sales, when-issued and forward
     commitment transactions and similar investment strategies.
    
 
          7. Underwrite securities of other issuers, except insofar as the Fund
     technically may be deemed an underwriter under the Securities Act of 1933,
     as amended (the "Securities Act"), in selling portfolio securities.
 
          8. Purchase or sell commodities or contracts on commodities, except to
     the extent that the Fund may do so in accordance with applicable law and
     the Fund's Prospectus and Statement of Additional Information, as they may
     be amended from time to time, and without registering as a commodity pool
     operator under the Commodity Exchange Act.
 
     Under the non-fundamental investment restrictions, the Fund may not:
 
          a. Purchase securities of other investment companies, except to the
     extent such purchases are permitted by applicable law.
 
          b. Make short sales of securities or maintain a short position, except
     to the extent permitted by applicable law. The Fund currently does not
     intend to engage in short sales, except short sales "against the box."
 
   
          c. Invest in securities which cannot be readily resold because of
     legal or contractual restrictions or which cannot otherwise be marketed,
     redeemed or put to the issuer or a third party, if at the time of
     acquisition more than 15% of its total assets would be invested in such
     securities. This restriction shall not apply to securities which mature
     within seven days or securities which the Board of Trustees of the Trust
     has otherwise determined to be liquid pursuant to applicable law.
    
 
                                       14
<PAGE>   65
 
   
          d. Invest in warrants if, at the time of acquisition, its investments
     in warrants, valued at the lower of cost or market value, would exceed 5%
     of the Fund's total assets; included within such limitation, but not to
     exceed 2% of the Fund's total assets, are warrants which are not listed on
     the New York Stock Exchange (the "NYSE") or American Stock Exchange or a
     major foreign exchange. For purposes of this restriction, warrants acquired
     by the Fund in units or attached to securities may be deemed to be without
     value.
    
 
          e. Invest in securities of companies having a record, together with
     predecessors, of less than three years of continuous operation, if more
     than 5% of the Fund's total assets would be invested in such securities.
     This restriction shall not apply to mortgage-backed securities,
     asset-backed securities or obligations issued or guaranteed by the U.S.
     Government, its agencies or instrumentalities.
 
          f. Purchase or retain the securities of any issuer, if those
     individual officers and Trustees of the Trust, the officers and general
     partner of the Manager, the directors of such general partner or the
     officers and directors of any subsidiary thereof each owning beneficially
     more than one-half of one percent of the securities of such issuer own in
     the aggregate more than 5% of the securities of such issuer.
 
          g. Invest in real estate limited partnership interests or interests in
     oil, gas or other mineral leases, or exploration or development programs,
     except that the Fund may invest in securities issued by companies that
     engage in oil, gas or other mineral exploration or development activities.
 
          h. Write, purchase or sell puts, calls, straddles, spreads or
     combinations thereof, except to the extent permitted in the Fund's
     Prospectus and Statement of Additional Information, as they may be amended
     from time to time.
 
          i. Notwithstanding fundamental investment restriction (6) above,
     borrow amounts in excess of 20% of its total assets, taken at market value
     (including the amount borrowed), and then only from banks as a temporary
     measure for extraordinary or emergency purposes. In addition, the Fund will
     not purchase securities while borrowings are outstanding.
 
     In addition, to comply with Federal income tax requirements for
qualification as a "regulated investment company", the Fund's investments will
be limited in a manner such that, at the close of each quarter of each fiscal
year, (a) no more than 25% of the Fund's total assets are invested in the
securities of a single issuer, and (b) with regard to at least 50% of the Fund's
total assets, no more than 5% of its total assets are invested in the securities
of a single issuer. For purposes of this restriction, the Fund will regard each
state and each political subdivision, agency or instrumentality of such state
and each multi-state agency of which such state is a member and each public
authority which issues securities on behalf of a private entity as a separate
issuer, except that if the security is backed only by the assets and revenues of
a non-governmental entity then the entity with the ultimate responsibility for
the payment of interest and principal may be regarded as the sole issuer. These
tax-related limitations may be changed by the Trustees of the Trust to the
extent necessary to comply with changes to the Federal income tax requirements.
 
     Because of the affiliation of Merrill Lynch, Pierce, Fenner & Smith
Incorporated ("Merrill Lynch") with the Trust, the Fund is prohibited from
engaging in certain transactions involving such firm or its affiliates except
for brokerage transactions permitted under the 1940 Act involving only usual and
customary commissions or transactions pursuant to an exemptive order under the
1940 Act. Included among such restricted transactions will be purchases from or
sales to Merrill Lynch of securities in transactions in which it
 
                                       15
<PAGE>   66
 
acts as principal. See "Portfolio Transactions". An exemptive order has been
obtained which permits the Trust to effect principal transactions with Merrill
Lynch in high quality, short-term, tax-exempt securities subject to conditions
set forth in such order.
 
                            MANAGEMENT OF THE TRUST
 
TRUSTEES AND OFFICERS
 
   
     Information about the Trustees, executive officers and the portfolio
manager of the Trust, including their ages and their principal occupations for
at least the last five years, is set forth below. Unless otherwise noted, the
address of each Trustee and executive officer is P.O. Box 9011, Princeton, New
Jersey 08543-9011.
    
 
   
     ARTHUR ZEIKEL (64)--President and Trustee(1)(2)--President of the Manager
(which term, as used herein, includes the Manager's corporate predecessors)
since 1977; President of MLAM (which term, as used herein, includes its
corporate predecessors) since 1977; President and Director of Princeton
Services, Inc. ("Princeton Services") since 1993; Executive Vice President of
Merrill Lynch & Co., Inc. ("ML&Co.") since 1990; and Director of Merrill Lynch
Funds Distributor, Inc. ("MLFD" or the "Distributor") since 1977.
    
 
   
     JAMES H. BODURTHA (52)--Trustee(2)--36 Popponesset Road, Cotuit,
Massachusetts 02635. Director and Executive Vice President, The China Business
Group, Inc. since 1996. Chairman and Chief Executive Officer, China Enterprise
Management Corporation from 1993 to 1996; Chairman, Berkshire Corporation since
1980; Partner, Squire, Sanders & Dempsey from 1980 to 1993.
    
 
   
     HERBERT I. LONDON (57)--Trustee(2)--113-115 University Place, New York, New
York 10003. John M. Olin Professor of Humanities, New York University since
1993; Professor thereof since 1980; Dean, Gallatin Division of New York
University from 1978 to 1993; Distinguished Fellow, Herman Kahn Chair, Hudson
Institute from 1984 to 1985; Trustee, Hudson Institute since 1980; Director,
Damon Corporation since 1991; Overseer, Center for Naval Analyses from 1983 to
1993; Limited Partner, Hypertech L.P. since 1996.
    
 
   
     ROBERT R. MARTIN (69)--Trustee(2)--513 Grand Hill, St. Paul, Minnesota
55102. Chairman and Chief Executive Officer, Kinnard Investments, Inc. from 1990
to 1993; Executive Vice President, Dain Bosworth from 1974 to 1989; Director,
Carnegie Capital Management from 1977 to 1985 and Chairman thereof in 1979;
Director, Securities Industry Association from 1981 to 1982 and Public
Securities Association from 1979 to 1980; Chairman of the Board, WTC Industries,
Inc. in 1994; Trustee, Northland College since 1992.
    
 
   
     JOSEPH L. MAY (67)--Trustee(2)--424 Church Street, Suite 2000, Nashville,
Tennessee 37219. Attorney in private practice since 1984; President, May and
Athens Hosiery Mills Division, Wayne-Gossard Corporation from 1954 to 1983; Vice
President, Wayne-Gossard Corporation from 1972 to 1983; Chairman, The May
Corporation (personal holding company) from 1972 to 1983; Director, Signal
Apparel Co. from 1972 to 1989.
    
 
   
     ANDRE F. PEROLD (44)--Trustee(2)--Morgan Hall, Soldiers Field, Boston,
Massachusetts 02163. Professor, Harvard Business School since 1989 and Associate
Professor from 1983 to 1989; Trustee, The Common Fund, since 1989; Director,
Quantec Limited since 1991.
    
 
                                       16
<PAGE>   67
 
   
     TERRY K. GLENN (56)--Executive Vice President(1)(2)--Executive Vice
President of the Manager and MLAM since 1983; Executive Vice President and
Director of Princeton Services since 1993; President of MLFD since 1986 and
Director thereof since 1991; President of Princeton Administrators, L.P. since
1988.
    
 
   
     VINCENT R. GIORDANO (52)--Vice President(1)(2)--Portfolio Manager of the
Manager and MLAM since 1977 and Senior Vice President of the Manager and MLAM
since 1984; Vice President of MLAM from 1980 to 1984; Senior Vice President of
Princeton Services since 1993.
    
 
     KENNETH A. JACOB (44)--Vice President(1)(2)--Vice President of the Manager
and MLAM since 1984.
 
   
     FRED K. STUEBE (46)--Portfolio Manager(1)(2)--Vice President of MLAM since
1989.
    
 
   
     DONALD C. BURKE (36)--Vice President(1)(2)--Vice President and Director of
Taxation of MLAM since 1990; Employee of Deloitte & Touche LLP from 1982 to
1990.
    
 
   
     GERALD M. RICHARD (47)--Treasurer(1)(2)--Senior Vice President and
Treasurer of the Manager and MLAM since 1984; Senior Vice President and
Treasurer of Princeton Services since 1993; Treasurer of MLFD since 1984 and
Vice President thereof since 1981.
    
 
   
     JERRY WEISS (38)--Secretary(1)(2)--Vice President of MLAM since 1990;
Attorney in private practice from 1982 to 1990.
    
- ---------------
(1) Interested person, as defined in the 1940 Act, of the Trust.
(2) Such Trustee or officer is a director or officer of certain other investment
    companies for which the Manager or MLAM acts as investment adviser or
    manager.
 
   
     At September 30, 1996, the Trustees and officers of the Trust as a group
(12 persons) owned an aggregate of less than 1% of the outstanding shares of
Common Stock of ML&Co. and owned an aggregate of less than 1% of the outstanding
shares of the Fund.
    
 
COMPENSATION OF TRUSTEES
 
   
     The Trust pays each Trustee not affiliated with the Manager (each a
"non-affiliated Trustee") a fee of $10,000 per year plus $1,000 per meeting
attended, together with such Trustee's actual out-of-pocket expenses relating to
attendance at meetings. The Trust also compensates members of its Audit and
Nominating Committee (the "Committee"), which consists of all the non-affiliated
Trustees, a fee of $2,000 per year plus $500 per meeting attended. The Trust
reimburses each non-affiliated Trustee for his out-of-pocket expenses relating
to attendance at Board and Committee meetings. The fees and expenses of the
Trustees are allocated to the respective series of the Trust on the basis of
asset size. For the fiscal year ended July 31, 1996, fees and expenses paid to
non-affiliated Trustees and allocated to the Fund aggregated $2,177.
    
 
                                       17
<PAGE>   68
 
   
     The following table sets forth for the fiscal year ended July 31, 1996,
compensation paid by the Fund to the non-affiliated Trustees and for the
calendar year ended December 31, 1995, the aggregate compensation paid by all
registered investment companies (including the Fund) advised by the Manager and
its affiliate, MLAM ("FAM/MLAM Advised Funds") to the non-affiliated Trustees:
    
 
   
<TABLE>
<CAPTION>
                                                                                 AGGREGATE COMPENSATION
                                                              PENSION OR          FROM FUND AND OTHER
                                                          RETIREMENT BENEFITS       FAM/MLAM ADVISED
                NAME OF                   COMPENSATION      ACCRUED AS PART          FUNDS PAID TO
                TRUSTEE                    FROM FUND      OF FUND'S EXPENSES           TRUSTEE(1)
- ---------------------------------------   ------------    -------------------    ----------------------
<S>                                       <C>             <C>                    <C>
James H. Bodurtha......................       $213                None                  $157,500*
Herbert I. London......................       $213                None                  $157,500
Robert R. Martin.......................       $213                None                  $157,500
Joseph L. May..........................       $213                None                  $157,500
Andre F. Perold........................       $213                None                  $157,500
</TABLE>
    
 
- ---------------
   
(1) The Trustees serve on the boards of FAM/MLAM Advised Funds as follows: Mr.
    Bodurtha (22 registered investment companies consisting of 46 portfolios);
    Mr. London (22 registered investment companies consisting of 46 portfolios);
    Mr. Martin (22 registered investment companies consisting of 46 portfolios);
    Mr. May (22 registered investment companies consisting of 46 portfolios);
    and Mr. Perold (22 registered investment companies consisting of 46
    portfolios).
    
   
*  $157,500 represents the amount Mr. Bodurtha would have received if he had
    been a Trustee for the entire calendar year ended December 31, 1995. Mr.
    Bodurtha was elected to the Trust's Board of Trustees effective June 23,
    1995.
    
 
MANAGEMENT AND ADVISORY ARRANGEMENTS
 
     Reference is made to "Management of the Trust--Management and Advisory
Arrangements" in the Prospectus for certain information concerning the
management and advisory arrangements of the Fund.
 
     Securities may be held by, or be appropriate investments for, the Fund as
well as other funds or investment advisory clients of the Manager or MLAM.
Because of different objectives or other factors, a particular security may be
bought for one or more clients when one or more clients are selling the same
security. If purchases or sales of securities for the Fund or other funds for
which they act as manager or for their advisory clients arise for consideration
at or about the same time, transactions in such securities will be made, insofar
as feasible, for the respective funds and clients in a manner deemed equitable
to all. To the extent that transactions on behalf of more than one client of the
Manager or MLAM during the same period may increase the demand for securities
being purchased or the supply of securities being sold, there may be an adverse
effect on price.
 
   
     Pursuant to a management agreement between the Trust on behalf of the Fund
and the Manager (the "Management Agreement"), the Manager receives for its
services to the Fund monthly compensation based upon the average daily net
assets of the Fund at the following annual rates: 0.55% of the average daily net
assets not exceeding $500 million; 0.525% of the average daily net assets
exceeding $500 million but not exceeding $1.0 billion; and 0.50% of the average
daily net assets exceeding $1.0 billion. For the period October 29, 1993
(commencement of operations) to July 31, 1994, and for the fiscal years ended
July 31, 1995 and 1996, the total advisory fees payable by the Fund to the
Manager were $55,550, $98,737, and $133,974, respectively, all of which were
voluntarily waived.
    
 
     The Management Agreement obligates the Manager to provide investment
advisory services and to pay all compensation of and furnish office space for
officers and employees of the Trust connected with investment and economic
research, trading and investment management of the Trust, as well as the fees of
all Trustees of the Trust who are affiliated persons of ML&Co. or any of its
affiliates. The Fund pays all other expenses
 
                                       18
<PAGE>   69
 
   
incurred in its operation and a portion of the Trust's general administrative
expenses allocated on the basis of the asset size of the respective series of
the Trust ("Series"). Expenses that will be borne directly by the Series
include, among other things, redemption expenses, expenses of portfolio
transactions, expenses of registering the shares under Federal and state
securities laws, pricing costs (including the daily calculation of net asset
value), expenses of printing shareholder reports, prospectuses and statements of
additional information (except to the extent paid by the Distributor as
described below), fees for legal and auditing services, Commission fees,
interest, certain taxes, and other expenses attributable to a particular Series.
Expenses which will be allocated on the basis of asset size of the respective
Series include fees and expenses of unaffiliated Trustees, state franchise
taxes, costs of printing proxies and other expenses related to shareholder
meetings, and other expenses properly payable by the Trust. The organizational
expenses of the Trust were paid by the Trust, and as additional Series are added
to the Trust, the organizational expenses are allocated among the Series
(including the Fund) in a manner deemed equitable by the Trustees. Depending
upon the nature of a lawsuit, litigation costs may be assessed to the specific
Series to which the lawsuit relates or allocated on the basis of the asset size
of the respective Series. The Trustees have determined that this is an
appropriate method of allocation of expenses. Accounting services are provided
to the Fund by the Manager and the Fund reimburses the Manager for its costs in
connection with such services. For the period October 29, 1993 (commencement of
operations) to July 31, 1994, and for the fiscal years ended July 31, 1995 and
1996, the Fund reimbursed the Manager $33,005, $29,053 and $42,113,
respectively, for accounting services. As required by the Fund's distribution
agreements, the Distributor will pay the promotional expenses of the Fund
incurred in connection with the offering of shares of the Fund. Certain expenses
in connection with account maintenance and the distribution of Class B shares
will be financed by the Fund pursuant to the Distribution Plan in compliance
with Rule 12b-1 under the 1940 Act. See "Purchase of Shares--Distribution
Plans".
    
 
     The Manager is a limited partnership, the partners of which are ML&Co. and
Princeton Services. ML&Co. and Princeton Services are "controlling persons" of
the Manager as defined under the 1940 Act because of their ownership of its
voting securities or their power to exercise a controlling influence over its
management or policies.
 
     Duration and Termination.  Unless earlier terminated as described herein,
the Management Agreement will remain in effect from year to year if approved
annually (a) by the Trustees of the Trust or by a majority of the outstanding
shares of the Fund and (b) by a majority of the Trustees who are not parties to
such contract or interested persons (as defined in the 1940 Act) of any such
party. Such contracts are not assignable and may be terminated without penalty
on 60 days' written notice at the option of either party thereto or by vote of
the shareholders of the Fund.
 
                               PURCHASE OF SHARES
 
     Reference is made to "Purchase of Shares" in the Prospectus for certain
information as to the purchase of Fund shares.
 
     The Fund issues four classes of shares under the Merrill Lynch Select
Pricing(SM) System: shares of Class A and Class D are sold to investors choosing
the initial sales charge alternatives, and shares of Class B and Class C are
sold to investors choosing the deferred sales charge alternatives. Each Class A,
Class B, Class C and Class D share of the Fund represents identical interests in
the investment portfolio of the Fund and has the same rights, except that Class
B, Class C and Class D shares bear the expenses of the ongoing account
maintenance fees, and Class B and Class C shares bear the expenses of the
ongoing distribution fees and the additional incremental transfer agency costs
resulting from the deferred sales charge arrangements.
 
                                       19
<PAGE>   70
 
Class B, Class C and Class D shares each have exclusive voting rights with
respect to the Rule 12b-1 distribution plan adopted with respect to such class
pursuant to which account maintenance and/or distribution fees are paid. Each
class has different exchange privileges. See "Shareholder Services--Exchange
Privilege".
 
   
     The Merrill Lynch Select Pricing(SM) System is used by more than 50
registered investment companies advised by MLAM or its affiliate, the Manager.
Funds advised by MLAM or the Manager which utilize the Merrill Lynch Select
Pricing(SM) System are referred to herein as "MLAM-advised mutual funds".
    
 
   
     The Fund has entered into four separate distribution agreements with the
Distributor in connection with the continuous offering of each class of shares
of the Fund (the "Distribution Agreements"). The Distribution Agreements
obligate the Distributor to pay certain expenses in connection with the offering
of each class of shares of the Fund. After the prospectuses, statements of
additional information and periodic reports have been prepared, set in type and
mailed to shareholders, the Distributor pays for the printing and distribution
of copies thereof used in connection with the offering to dealers and
prospective investors. The Distributor also pays for other supplementary sales
literature and advertising costs. The Distribution Agreements are subject to the
same renewal requirements and termination provisions as the Management Agreement
described above.
    
 
   
INITIAL SALES CHARGE ALTERNATIVES--CLASS A AND CLASS D SHARES
    
 
   
     The gross sales charges for the sale of Class A shares for the period
October 29, 1993 (commencement of operations) to July 31, 1994 were $57,490, of
which the Distributor received $2,668 and Merrill Lynch received $54,822. The
gross sales charges for the sale of Class A shares for the fiscal year ended
July 31, 1995 were $3,176, of which the Distributor received $252 and Merrill
Lynch received $2,924. The gross sales charges for the sale of Class A shares
for the fiscal year ended July 31, 1996 were $2,613, of which the Distributor
received $168 and Merrill Lynch received $2,445. The gross sales charges for the
sale of Class D shares for the period October 21, 1994 (commencement of
operations) to July 31, 1995 were $1,685, of which the Distributor received $99
and Merrill Lynch received $1,586. The gross sales charges for the sale of Class
D shares for the fiscal year ended July 31, 1996 were $6,272, of which the
Distributor received $599 and Merrill Lynch received $5,674. For the period
October 29, 1993 (commencement of operations) to July 31, 1994 and for the
fiscal years ended July 31, 1995 and 1996, the Distributor received no CDSCs
with respect to redemption within one year after purchase of Class A shares
purchased subject to a front-end sales charge waiver. For the period October 21,
1994 (commencement of operations) to July 31, 1995 and for the fiscal year ended
July 31, 1996, the Distributor received no CDSCs with respect to redemption
within one year after purchase of Class D shares purchased subject to a
front-end sales charge waiver.
    
 
   
     The term "purchase", as used in the Prospectus and this Statement of
Additional Information in connection with an investment in Class A and Class D
shares of the Fund, refers to a single purchase by an individual, or to
concurrent purchases, which in the aggregate are at least equal to the
prescribed amounts, by an individual, his spouse and their children under the
age of 21 years purchasing shares for his or their own account and to single
purchases by a trustee or other fiduciary purchasing shares for a single trust
estate or single fiduciary account although more than one beneficiary is
involved. The term "purchase" also includes purchases by any "company", as that
term is defined in the 1940 Act, but does not include purchases by any such
company which has not been in existence for at least six months or which has no
purpose other than the purchase of shares of the Fund or shares of other
registered investment companies at a discount; provided, however, that it shall
not include purchases by any group of individuals whose sole organizational
nexus is that
    
 
                                       20
<PAGE>   71
 
the participants therein are credit cardholders of a company, policyholders of
an insurance company, customers of either a bank or broker-dealer or clients of
an investment adviser.
 
   
     Closed-End Fund Investment Option.  Class A shares of the Fund and certain
other MLAM-advised mutual funds ("Eligible Class A shares") are offered at net
asset value to shareholders of certain closed-end funds advised by the Manager
or MLAM who purchased such closed-end fund shares prior to October 21, 1994, the
date the Merrill Lynch Select Pricing(SM) System commenced operations, and wish
to reinvest the net proceeds of a sale of their closed-end fund shares of common
stock in Eligible Class A shares, if the conditions set forth below are
satisfied. Alternatively, closed-end fund shareholders who purchased such shares
on or after October 21, 1994 and wish to reinvest the net proceeds from a sale
of their closed-end fund shares are offered Class A shares (if eligible to buy
Class A shares) or Class D shares of the Fund and other MLAM-advised mutual
funds ("Eligible Class D shares"), if the following conditions are met. First,
the sale of closed-end fund shares must be made through Merrill Lynch, and the
net proceeds therefrom must be immediately reinvested in Eligible Class A or
Class D shares. Second, the closed-end fund shares must either have been
acquired in the initial public offering or be shares representing dividends from
shares of common stock acquired in such offering. Third, the closed-end fund
shares must have been continuously maintained in a Merrill Lynch securities
account. Fourth, there must be a minimum purchase of $250 to be eligible for the
investment option. Shareholders of certain MLAM-advised continuously offered
closed-end funds may reinvest at net asset value the net proceeds from a sale of
certain shares of common stock of such funds in shares of the Fund. Upon
exercise of this investment option, shareholders of Merrill Lynch Senior
Floating Rate Fund, Inc. will receive Class A shares of the Fund and
shareholders of Merrill Lynch Municipal Strategy Fund, Inc. and Merrill Lynch
High Income Municipal Bond Fund, Inc. will receive Class D shares of the Fund,
except that shareholders already owning Class A shares of the Fund will be
eligible to purchase additional Class A shares pursuant to this option, if such
additional Class A shares will be held in the same account as the existing Class
A shares and the other requirements pertaining to the reinvestment privilege are
met. In order to exercise this investment option, a shareholder of one of the
above-referenced continuously offered closed-end funds (an "eligible fund") must
sell his or her shares of common stock of the eligible fund (the "eligible
shares") back to the eligible fund in connection with a tender offer conducted
by the eligible fund and reinvest the proceeds immediately in the designated
class of shares of the Fund. This investment option is available only with
respect to eligible shares as to which no Early Withdrawal Charge or CDSC (each
as defined in the eligible fund's prospectus) is applicable. Purchase orders
from eligible fund shareholders wishing to exercise this investment option will
be accepted only on the day that the related tender offer terminates and will be
effected at the net asset value of the designated class of the Fund on such day.
    
 
REDUCED INITIAL SALES CHARGES
 
     Right of Accumulation.  Reduced sales charges are applicable through a
right of accumulation under which eligible investors are permitted to purchase
shares of the Fund subject to an initial sales charge at the offering price
applicable to the total of (a) the public offering price of the shares then
being purchased plus (b) an amount equal to the then current net asset value or
cost, whichever is higher, of the purchaser's combined holdings of all classes
of shares of the Fund and of other MLAM-advised mutual funds. For any such right
of accumulation to be made available, the Distributor must be provided at the
time of purchase, by the purchaser or the purchaser's securities dealer, with
sufficient information to permit confirmation of qualification. Acceptance of
the purchase order is subject to such confirmation. The right of accumulation
may be amended or terminated at any time. Shares held in the name of a nominee
or custodian under pension,
 
                                       21
<PAGE>   72
 
profit-sharing, or other employee benefit plans may not be combined with other
shares to qualify for the right of accumulation.
 
   
     Letter of Intention.  Reduced sales charges are applicable to purchases
aggregating $25,000 or more of the Class A or Class D shares of the Fund or any
other MLAM-advised mutual funds made within a 13-month period starting with the
first purchase pursuant to a Letter of Intention in the form provided in the
Prospectus. The Letter of Intention is available only to investors whose
accounts are maintained at the Fund's Transfer Agent. The Letter of Intention is
not available to employee benefit plans for which Merrill Lynch provides plan
participant, recordkeeping services. The Letter of Intention is not a binding
obligation to purchase any amount of Class A or Class D shares; however, its
execution will result in the purchaser paying a lower sales charge at the
appropriate quantity purchase level. A purchase not originally made pursuant to
a Letter of Intention may be included under a subsequent Letter of Intention
executed within 90 days of such purchase if the Distributor is informed in
writing of this intent within such 90-day period. The value of Class A or Class
D shares of the Fund and of other MLAM-advised mutual funds presently held, at
cost or maximum offering price (whichever is higher), on the date of the first
purchase under the Letter of Intention, may be included as a credit toward the
completion of such Letter, but the reduced sales charge applicable to the amount
covered by such Letter will be applied only to new purchases. If the total
amount of shares does not equal the amount stated in the Letter of Intention
(minimum of $25,000), the investor will be notified and must pay, within 20 days
of the expiration of such Letter, the difference between the sales charge on the
Class A or Class D shares purchased at the reduced rate and the sales charge
applicable to the shares actually purchased through the Letter. Class A or Class
D shares equal to at least five percent of the intended amount will be held in
escrow during the 13-month period (while remaining registered in the name of the
purchaser) for this purpose. The first purchase under the Letter of Intention
must be at least five percent of the dollar amount of such Letter. If a purchase
during the term of such Letter would otherwise be subject to a further reduced
sales charge based on the right of accumulation, the purchaser will be entitled
on that purchase and subsequent purchases to that further reduced percentage
sales charge, but there will be no retroactive reduction of the sales charges on
any previous purchase. The value of any shares redeemed or otherwise disposed of
by the purchaser prior to termination or completion of the Letter of Intention
will be deducted from the total purchases made under such Letter. An exchange
from a MLAM-advised money market fund into the Fund that creates a sales charge
will count toward completing a new or existing Letter of Intention from the
Fund.
    
 
   
     Employee Access Accounts(SM).  Class A or Class D shares are offered at net
asset value to Employee Access Accounts available through employers that provide
employer-sponsored retirement or savings plans that are eligible to purchase
such shares at net asset value. The initial minimum for such accounts is $500,
except that the initial minimum for shares purchased for such accounts pursuant
to the Automatic Investment Program is $50.
    
 
   
     TMA(SM) Managed Trusts.  Class A shares are offered to TMA(SM) Managed
Trusts to which Merrill Lynch Trust Company provides discretionary trustee
services at net asset value.
    
 
   
     Purchase Privilege of Certain Persons.  Trustees of the Trust, members of
the Boards of other MLAM-advised investment companies, ML&Co. and its
subsidiaries (the term "subsidiaries", when used herein with respect to ML&Co.,
includes MLAM, the Manager and certain other entities directly or indirectly
wholly-owned and controlled by ML&Co.), and their directors and employees, and
any trust, pension, profit-sharing or other benefit plan for such persons, may
purchase Class A shares of the Fund at net asset value.
    
 
                                       22
<PAGE>   73
 
   
     Class D shares of the Fund are offered at net asset value, without sales
charge, to an investor who has a business relationship with a financial
consultant who joined Merrill Lynch from another investment firm within six
months prior to the date of purchase by such investor, if the following
conditions are satisfied: first, the investor must advise Merrill Lynch that it
will purchase Class D shares of the Fund with proceeds from a redemption of a
mutual fund that was sponsored by the financial consultant's previous firm and
was subject to a sales charge either at the time of purchase or on a deferred
basis; and second, the investor also must establish that such redemption had
been made within 60 days prior to the investment in the Fund, and the proceeds
from the redemption had been maintained in the interim in cash or a money market
fund.
    
 
   
     Class D shares of the Fund are also offered at net asset value, without
sales charge, to an investor who has a business relationship with a Merrill
Lynch financial consultant and who has invested in a mutual fund sponsored by a
non-Merrill Lynch company for which Merrill Lynch has served as a selected
dealer and where Merrill Lynch has either received or given notice that such
arrangement will be terminated ("notice"), if the following conditions are
satisfied: first, the investor must purchase Class D shares of the Fund with
proceeds from a redemption of shares of such other mutual fund and the shares of
such other fund were subject to a sales charge either at the time of purchase or
on a deferred basis; and second, such purchase of Class D shares must be made
within 90 days after such notice.
    
 
   
     Class D shares of the Fund are offered at net asset value, without sales
charge, to an investor who has a business relationship with a Merrill Lynch
financial consultant and who has invested in a mutual fund for which Merrill
Lynch has not served as a selected dealer if the following conditions are
satisfied: first, the investor must advise Merrill Lynch that it will purchase
Class D shares of the Fund with proceeds from the redemption of shares of such
other mutual fund and that such shares have been outstanding for a period of no
less than six months; and second, such purchase of Class D shares must be made
within 60 days after the redemption and the proceeds from the redemption must be
maintained in the interim in cash or a money market fund.
    
 
   
     Acquisition of Certain Investment Companies.  The public offering price of
Class D shares may be reduced to the net asset value per Class D share in
connection with the acquisition of the assets of or merger or consolidation with
a personal holding company or a public or private investment company. The value
of the assets or company acquired in a tax-free transaction may be adjusted in
appropriate cases to reduce possible adverse tax consequences to the Fund which
might result from an acquisition of assets having net unrealized appreciation
which is disproportionately higher at the time of acquisition than the realized
or unrealized appreciation of the Fund. The issuance of Class D shares for
consideration other than cash is limited to bona fide reorganizations, statutory
mergers or other acquisitions of portfolio securities which (i) meet the
investment objectives and policies of the Fund; (ii) are acquired for investment
and not for resale (subject to the understanding that the disposition of the
Fund's portfolio securities shall at all times remain within its control); and
(iii) are liquid securities, the value of which is readily ascertainable, which
are not restricted as to transfer either by law or liquidity of market (except
that the Fund may acquire through such transactions restricted or illiquid
securities to the extent the Fund does not exceed the applicable limits on
acquisition of such securities set forth under "Investment Objective and
Policies" herein).
    
 
   
     Reductions in or exemptions from the imposition of a sales load are due to
the nature of the investors and/or the reduced sales efforts that will be needed
in obtaining such investments.
    
 
                                       23
<PAGE>   74
 
DISTRIBUTION PLANS
 
     Reference is made to "Purchase of Shares--Distribution Plans" in the
Prospectus for certain information with respect to the separate distribution
plans for Class B, Class C and Class D shares pursuant to Rule 12b-1 under the
1940 Act (each a "Distribution Plan") with respect to the account maintenance
and/or distribution fees paid by the Fund to the Distributor with respect to
such classes.
 
     Payments of the account maintenance fees and/or distribution fees are
subject to the provisions of Rule 12b-1 under the 1940 Act. Among other things,
each Distribution Plan provides that the Distributor shall provide and the
Trustees shall review quarterly reports of the disbursement of the account
maintenance and/or distribution fees paid to the Distributor. In their
consideration of each Distribution Plan, the Trustees must consider all factors
they deem relevant, including information as to the benefits of the Distribution
Plan to the Fund and its related class of shareholders. Each Distribution Plan
further provides that, so long as the Distribution Plan remains in effect, the
selection and nomination of Trustees who are not "interested persons" of the
Trust, as defined in the 1940 Act (the "Independent Trustees"), shall be
committed to the discretion of the Independent Trustees then in office. In
approving each Distribution Plan in accordance with Rule 12b-1, the Independent
Trustees concluded that there is a reasonable likelihood that such Distribution
Plan will benefit the Fund and its related class of shareholders. Each
Distribution Plan can be terminated at any time, without penalty, by the vote of
a majority of the Independent Trustees or by the vote of the holders of a
majority of the outstanding related class of voting securities of the Fund. A
Distribution Plan cannot be amended to increase materially the amount to be
spent by the Fund without the approval of the related class of shareholders, and
all material amendments are required to be approved by the vote of Trustees,
including a majority of the Independent Trustees who have no direct or indirect
financial interest in such Distribution Plan, cast in person at a meeting called
for that purpose. Rule 12b-1 further requires that the Trust preserve copies of
each Distribution Plan and any report made pursuant to such plan for a period of
not less than six years from the date of such Distribution Plan or such report,
the first two years in an easily accessible place.
 
LIMITATIONS ON THE PAYMENT OF DEFERRED SALES CHARGES
 
   
     The maximum sales charge rule in the Conduct Rules of the National
Association of Securities Dealers, Inc. ("NASD") imposes a limitation on certain
asset-based sales charges such as the distribution fee and the contingent
deferred sales charge ("CDSC") borne by the Class B and Class C shares but not
the account maintenance fee. The maximum sales charge rule is applied separately
to each class. As applicable to the Fund, the maximum sales charge rule limits
the aggregate of distribution fee payments and CDSCs payable by the Fund to (1)
6.25% of eligible gross sales of Class B shares and Class C shares, computed
separately (defined to exclude shares issued pursuant to dividend reinvestments
and exchanges), plus (2) interest on the unpaid balance for the respective
class, computed separately, at the prime rate plus 1.0% (the unpaid balance
being the maximum amount payable minus amounts received from the payment of the
distribution fee and the CDSC). In connection with the Class B shares, the
Distributor has voluntarily agreed to waive interest charges on the unpaid
balance in excess of 0.50% of eligible gross sales. Consequently, the maximum
amount payable to the Distributor (referred to as the "voluntary maximum") in
connection with the Class B shares is 6.75% of eligible gross sales. The
Distributor retains the right to stop waiving the interest charges at any time.
To the extent payments would exceed the voluntary maximum, the Fund will not
make further payments of the distribution fee with respect to Class B shares,
and any CDSCs will be paid to the Fund rather than to the Distributor; however,
the Fund will continue to make payments of the account maintenance fee. In
certain
    
 
                                       24
<PAGE>   75
 
circumstances the amount payable pursuant to the voluntary maximum may exceed
the amount payable under the NASD formula. In such circumstances payment in
excess of the amount payable under the NASD formula will not be made.
 
   
     The following table sets forth comparative information as of July 31, 1996
with respect to the Class B and Class C shares of the Fund indicating the
maximum allowable payments that can be made under the NASD maximum sales charge
rule and, with respect to the Class B shares, the Distributor's voluntary
maximum.
    
 
   
<TABLE>
<CAPTION>
                                                           DATA CALCULATED AS OF JULY 31, 1996
                               --------------------------------------------------------------------------------------------
                                                                      (IN THOUSANDS)
                                                                                                                  ANNUAL
                                                                                                               DISTRIBUTION
                                          ALLOWABLE    ALLOWABLE                   AMOUNTS                        FEE AT
                               ELIGIBLE   AGGREGATE     INTEREST     MAXIMUM      PREVIOUSLY      AGGREGATE      CURRENT
                                GROSS       SALES      ON UNPAID     AMOUNT        PAID TO         UNPAID       NET ASSET
                               SALES(1)    CHARGES     BALANCE(2)    PAYABLE    DISTRIBUTOR(3)     BALANCE       LEVEL(4)
                               -------    ---------    ----------    -------    --------------    ---------    ------------
<S>                            <C>        <C>          <C>           <C>        <C>               <C>          <C>
CLASS B SHARES, FOR THE PERIOD
OCTOBER 29, 1993 (COMMENCEMENT
OF OPERATIONS) TO JULY 31, 1996:
Under NASD Rule as
  Adopted...................   $26,204     $ 1,638        $282       $1,920          $265          $ 1,655         $ 55
Under Distributor's
  Voluntary Waiver..........   $26,204     $ 1,638        $131       $1,769          $265          $ 1,504         $ 55
CLASS C SHARES, FOR THE PERIOD
OCTOBER 21, 1994 (COMMENCEMENT
OF OPERATIONS) TO JULY 31, 1996:
Under NASD Rule as
  Adopted...................   $ 2,295     $   143        $ 10       $  153          $ 10          $   143         $  8
</TABLE>
    
 
- ---------------
   
(1) Purchase price of all eligible Class B or Class C shares sold during the
    periods indicated other than shares acquired through dividend reinvestment
    and the exchange privilege.
    
(2) Interest is computed on a monthly basis based upon the prime rate, as
    reported in The Wall Street Journal, plus 1%, as permitted under the NASD
    Rule.
(3) Consists of CDSC payments, distribution fee payments and accruals.
(4) Provided to illustrate the extent to which the current level of distribution
    fee payments (not including any CDSC payments) is amortizing the unpaid
    balance. No assurance can be given that payments of the distribution fee
    will reach either the NASD maximum or, with respect to Class B shares, the
    voluntary maximum.
 
                                       25
<PAGE>   76
 
                              REDEMPTION OF SHARES
 
     Reference is made to "Redemption of Shares" in the Prospectus for certain
information as to the redemption and repurchase of Fund shares.
 
   
     The right to redeem shares or to receive payment with respect to any such
redemption may be suspended only for any period during which trading on the NYSE
is restricted as determined by the Commission or the NYSE is closed (other than
customary weekend and holiday closings), for any period during which an
emergency exists, as defined by the Commission, as a result of which disposal of
portfolio securities or determination of the net asset value of the Fund is not
reasonably practicable, and for such other periods as the Commission may by
order permit for the protection of shareholders of the Fund.
    
 
DEFERRED SALES CHARGES--CLASS B AND CLASS C SHARES
 
   
     As discussed in the Prospectus under "Purchase of Shares--Deferred Sales
Charge Alternatives-- Class B and Class C Shares", while Class B shares redeemed
within four years of purchase are subject to a CDSC under most circumstances,
the charge is waived on redemptions of Class B shares following the death or
disability of a Class B shareholder. Redemptions for which the waiver applies
are any partial or complete redemption following the death or disability (as
defined in the Code) of a Class B shareholder (including one who owns the Class
B shares as joint tenant with his or her spouse), provided the redemption is
requested within one year of the death or initial determination of disability.
For the period October 29, 1993 (commencement of operations) to July 31, 1994,
and for the fiscal years ended July 31, 1995 and 1996, the Distributor received
CDSCs of $9,047, $49,880 and $91,447, respectively, with respect to redemptions
of Class B shares, all of which were paid to Merrill Lynch. For the period
October 21, 1994 (commencement of operations) to July 31, 1995, and for the
fiscal year ended July 31, 1996, the Distributor received CDSCs of $25 and $530,
respectively, with respect to redemptions of Class C shares, all of which were
paid to Merrill Lynch.
    
 
   
                             PORTFOLIO TRANSACTIONS
    
 
     Reference is made to "Investment Objective and Policies" and "Portfolio
Transactions" in the Prospectus.
 
   
     Under the 1940 Act, persons affiliated with the Trust are prohibited from
dealing with the Fund as a principal in the purchase and sale of securities
unless such trading is permitted by an exemptive order issued by the Commission.
Since over-the-counter transactions are usually principal transactions,
affiliated persons of the Trust, including Merrill Lynch, may not serve as
dealer in connection with transactions with the Fund. The Trust has obtained an
exemptive order permitting it to engage in certain principal transactions with
Merrill Lynch involving high quality short-term municipal bonds subject to
certain conditions. For the period October 29, 1993 (commencement of operations)
to July 31, 1994, and for the fiscal year ended July 31, 1995, the Fund engaged
in no transactions pursuant to this order. For the fiscal year ended July 31,
1996, the Fund engaged in four transactions pursuant to this order for an
aggregate market value of $3,800,000. Affiliated persons of the Trust may serve
as broker for the Fund in over-the-counter transactions conducted on an agency
basis. Certain court decisions have raised questions as to the extent to which
investment companies should seek exemptions under the 1940 Act in order to seek
to recapture underwriting and dealer spreads from affiliated entities. The
Trustees have considered all factors deemed relevant, and have made a
determination not to seek such recapture at this time. The Trustees will
reconsider this matter from time to time.
    
 
                                       26
<PAGE>   77
 
     As a non-fundamental restriction, the Trust will prohibit the purchase or
retention by the Fund of the securities of any issuer if the officers and
Trustees of the Trust, the officers and general partner of the Manager, the
directors of such general partner or the officers and directors of any
subsidiary thereof each owning beneficially more than one-half of one per cent
of the securities of such issuer own in the aggregate more than five per cent of
the securities of such issuer. In addition, under the 1940 Act, the Fund may not
purchase securities from any underwriting syndicate of which Merrill Lynch is a
member except pursuant to an exemptive order or rules adopted by the Commission.
Rule 10f-3 under the 1940 Act sets forth conditions under which the Fund may
purchase municipal bonds in such transactions. The rule sets forth requirements
relating to, among other things, the terms of an issue of municipal bonds
purchased by the Fund, the amount of municipal bonds which may be purchased in
any one issue and the assets of the Fund which may be invested in a particular
issue.
 
     The Fund does not expect to use any particular dealer in the execution of
transactions but, subject to obtaining the best net results, dealers who provide
supplemental investment research (such as information concerning tax-exempt
securities, economic data and market forecasts) to the Manager may receive
orders for transactions by the Fund. Information so received will be in addition
to and not in lieu of the services required to be performed by the Manager under
its Management Agreement and the expenses of the Manager will not necessarily be
reduced as a result of the receipt of such supplemental information.
 
     The Trust has no obligation to deal with any broker in the execution of
transactions for the Fund's portfolio securities. In addition, consistent with
the Rules of Fair Practice of the NASD and policies established by the Trustees
of the Trust, the Manager may consider sales of shares of the Fund as a factor
in the selection of brokers or dealers to execute portfolio transactions for the
Fund.
 
   
     Generally, the Fund does not purchase securities for short-term trading
profits. However, the Fund may dispose of securities without regard to the time
they have been held when such action, for defensive or other reasons, appears
advisable to its Manager. While it is not possible to predict turnover rates
with any certainty, at present it is anticipated that the Fund's annual
portfolio turnover rate, under normal circumstances after the Fund's portfolio
is invested in accordance with its investment objective, will be less than 100%.
(The portfolio turnover rate is calculated by dividing the lesser of purchases
or sales of portfolio securities for the particular fiscal year by the monthly
average of the value of the portfolio securities owned by the Fund during the
particular fiscal year. For purposes of determining this rate, all securities
whose maturities at the time of acquisition are one year or less are excluded.)
The portfolio turnover rates for the fiscal years ended July 31, 1995 and 1996
were 73.99% and 81.87%, respectively.
    
 
   
     Section 11(a) of the Securities Exchange Act of 1934, as amended, generally
prohibits members of the U.S. national securities exchanges from executing
exchange transactions for their affiliates and institutional accounts which they
manage unless the member (i) has obtained prior express authorization from the
account to effect such transactions, (ii) at least annually furnishes the
account with a statement setting forth the aggregate compensation received by
the member in effecting such transactions, and (iii) complies with any rules the
Commission has prescribed with respect to the requirements of clauses (i) and
(ii). To the extent Section 11(a) would apply to Merrill Lynch acting as a
broker for the Fund in any of its portfolio transactions executed on any such
securities exchange of which it is a member, appropriate consents have been
obtained from the Fund and annual statements as to aggregate compensation will
be provided to the Fund.
    
 
                                       27
<PAGE>   78
 
                        DETERMINATION OF NET ASSET VALUE
 
   
     The net asset value of the shares of all classes of the Fund is determined
by the Manager once daily, Monday through Friday, as of 15 minutes after the
close of business on the NYSE (generally, 4:00 P.M., New York time) on each day
during which the NYSE is open for trading. The NYSE is not open on New Year's
Day, Presidents' Day, Good Friday, Memorial Day, Independence Day, Labor Day,
Thanksgiving Day and Christmas Day. Net asset value per share is computed by
dividing the sum of the value of the securities held by the Fund plus any cash
or other assets minus all liabilities by the total number of shares outstanding
at such time, rounded to the nearest cent. Expenses, including the fees payable
to the Manager and Distributor, are accrued daily. The per share net asset value
of Class B, Class C and Class D shares generally will be lower than the per
share net asset value of Class A shares, reflecting the daily expense accruals
of the account maintenance, distribution fees, and higher transfer agency fees
applicable with respect to Class B and Class C shares and the daily expense
accruals of the account maintenance fees applicable with respect to Class D
shares; moreover, the per share net asset value of Class B and Class C shares
generally will be lower than the per share net asset value of Class D shares,
reflecting the daily expense accruals of the distribution fees and higher
transfer agency fees applicable with respect to Class B and Class C shares of
the Fund. It is expected, however, that the per share net asset value of the
four classes will tend to converge (although not necessarily meet) immediately
after the payment of dividends, which will differ by approximately the amount of
the expense accrual differentials between the classes.
    
 
     The Municipal Bonds, and other portfolio securities in which the Fund
invests, are traded primarily in over-the-counter municipal bond and money
markets and are valued at the last available bid price in the over-the-counter
market or on the basis of yield equivalents as obtained from one or more dealers
that make markets in the securities. One bond is the "yield equivalent" of
another bond when, taking into account market price, maturity, coupon rate,
credit rating and ultimate return of principal, both bonds will theoretically
produce an equivalent return to the bondholder. Financial futures contracts and
options thereon, which are traded on exchanges, are valued at their settlement
prices as of the close of such exchanges. Short-term investments with a
remaining maturity of 60 days or less are valued on an amortized cost basis,
which approximates market value. Securities and assets for which market
quotations are not readily available are valued at fair value as determined in
good faith by or under the direction of the Trustees of the Trust, including
valuations furnished by a pricing service retained by the Trust, which may
utilize a matrix system for valuations. The procedures of the pricing service
and its valuations are reviewed by the officers of the Trust under the general
supervision of the Trustees.
 
                              SHAREHOLDER SERVICES
 
     The Trust offers a number of shareholder services described below which are
designed to facilitate investment in shares of the Fund. Full details as to each
of such services and copies of the various plans described below can be obtained
from the Trust, the Distributor or Merrill Lynch.
 
INVESTMENT ACCOUNT
 
     Each shareholder whose account is maintained at the Transfer Agent has an
Investment Account and will receive, at least quarterly, statements from the
Transfer Agent. These statements will serve as transaction confirmations for
automatic investment purchases and the reinvestment of ordinary income dividends
and
 
                                       28
<PAGE>   79
 
long-term capital gains distributions. These statements will also show any other
activity in the account since the previous statement. Shareholders also will
receive separate confirmations for each purchase or sale transaction other than
automatic investment purchases and the reinvestment of ordinary income dividends
and long-term capital gains distributions. A shareholder may make additions to
his Investment Account at any time by mailing a check directly to the Transfer
Agent.
 
     Share certificates are issued only for full shares and only upon the
specific request of the shareholder who has an Investment Account. Issuance of
certificates representing all or only part of the full shares in an Investment
Account may be requested by a shareholder directly from the Transfer Agent.
 
   
     Shareholders considering transferring their Class A or Class D shares from
Merrill Lynch to another brokerage firm or financial institution should be aware
that, if the firm to which the Class A or Class D shares are to be transferred
will not take delivery of shares of the Fund, a shareholder either must redeem
the Class A or Class D shares (paying any applicable CDSC) so that the cash
proceeds can be transferred to the account at the new firm or such shareholder
must continue to maintain an Investment Account at the Transfer Agent for those
Class A or Class D shares. Shareholders interested in transferring their Class B
or Class C shares from Merrill Lynch and who do not wish to have an Investment
Account maintained for such shares at the Transfer Agent may request their new
brokerage firm to maintain such shares in an account registered in the name of
the brokerage firm for the benefit of the shareholder at the Transfer Agent. If
the new brokerage firm is willing to accommodate the shareholder in this manner,
the shareholder must request that he or she be issued certificates for his or
her shares, and then must turn the certificates over to the new firm for re-
registration as described in the preceding sentence.
    
 
AUTOMATIC INVESTMENT PLANS
 
   
     A shareholder may make additions to an Investment Account at any time by
purchasing Class A shares (if he or she is an eligible Class A investor as
described in the Prospectus) or Class B, Class C or Class D shares at the
applicable public offering price either through the shareholder's securities
dealer, or by mail directly to the Transfer Agent, acting as agent for such
securities dealers. Voluntary accumulation also can be made through a service
known as the Automatic Investment Plan whereby the Fund is authorized through
pre-authorized checks or automatic clearing house debits of $50 or more to
charge the regular bank account of the shareholder on a regular basis to provide
systematic additions to the Investment Account of such shareholder.
Alternatively, investors who maintain CMA(R) or CBA(R) accounts may arrange to
have periodic investments made in the Fund in their CMA(R) or CBA(R) account or
in certain related accounts in amounts of $100 or more through the CMA(R) or
CBA(R) Automated Investment Program.
    
 
AUTOMATIC REINVESTMENT OF DIVIDENDS AND CAPITAL GAINS DISTRIBUTIONS
 
   
     Unless specific instructions are given as to the method of payment of
dividends and capital gains distributions, dividends and distributions will be
automatically reinvested in additional shares of the Fund. Such reinvestment
will be at the net asset value of shares of the Fund as of the close of business
on the monthly payment date for such dividends and distributions. Shareholders
may elect in writing to receive either their income dividends or capital gains
distributions, or both, in cash, in which event payment will be mailed or direct
deposited on or about the payment date. Cash payments can also be directly
deposited to the shareholder's bank account.
    
 
                                       29
<PAGE>   80
 
     Shareholders may, at any time, notify the Transfer Agent in writing or by
telephone (1-800-MER-FUND) that they no longer wish to have their dividends
and/or capital gains distributions reinvested in shares of the Fund or vice
versa and, commencing ten days after the receipt by the Transfer Agent of such
notice, such instructions will be effected.
 
SYSTEMATIC WITHDRAWAL PLANS--CLASS A AND CLASS D SHARES
 
   
     A Class A and Class D shareholder may elect to make systematic withdrawals
from an Investment Account on either a monthly or quarterly basis as provided
below. Quarterly withdrawals are available for shareholders who have acquired
Class A or Class D shares of the Fund having a value, based on cost or the
current offering price, of $5,000 or more, and monthly withdrawals are available
for shareholders with Class A or Class D shares with such a value of $10,000 or
more.
    
 
   
     At the time of each withdrawal payment, sufficient Class A or Class D
shares are redeemed from those on deposit in the shareholder's account to
provide the withdrawal payment specified by the shareholder. The shareholder may
specify either a dollar amount or a percentage of the value of his Class A or
Class D shares. Redemptions will be made at net asset value as determined 15
minutes after the close of business on the NYSE (generally, 4:00 P.M., New York
time) on the 24th day of each month or the 24th day of the last month of each
quarter, whichever is applicable. If the NYSE is not open for business on such
date, the Class A or Class D shares will be redeemed at the close of business on
the following business day. The check for the withdrawal payment will be mailed,
or the direct deposit for the withdrawal payment will be made, on the next
business day following redemption. When a shareholder is making systematic
withdrawals, dividends and distributions on all Class A or Class D shares in the
Investment Account are reinvested automatically in the Fund's Class A or Class D
shares, respectively. A shareholder's Systematic Withdrawal Plan may be
terminated at any time, without charge or penalty, by the shareholder, the
Trust, the Transfer Agent or the Distributor. Withdrawal payments should not be
considered as dividends, yield or income. Each withdrawal is a taxable event. If
periodic withdrawals continuously exceed reinvested dividends, the shareholder's
original investment may be reduced correspondingly. Purchases of additional
Class A or Class D shares concurrent with withdrawals are ordinarily
disadvantageous to the shareholder because of sales charges and tax liabilities.
The Trust will not knowingly accept purchase orders for Class A or Class D
shares of the Fund from investors who maintain a Systematic Withdrawal Plan
unless such purchase is equal to at least one year's scheduled withdrawals or
$1,200, whichever is greater. Periodic investments may not be made into an
Investment Account in which the shareholder has elected to make systematic
withdrawals.
    
 
   
     Alternatively, a Class A or Class D shareholder whose shares are held
within a CMA(R) or CBA(R) may elect to have shares redeemed on a monthly,
bimonthly, quarterly, semiannual or annual basis through the CMA(R) or CBA(R)
Systematic Redemption Program. The minimum fixed dollar amount redeemable is
$25. The proceeds of systematic redemptions will be posted to the shareholder's
account three business days after the date the shares are redeemed. Monthly
systematic redemptions will be made at net asset value on the first Monday of
each month, bimonthly systematic redemption will be made at net asset value on
the first Monday of every other month, and quarterly, semiannual or annual
redemptions are made at net asset value on the first Monday of months selected
at the shareholder's option. If the first Monday of the month is a holiday, the
redemption will be processed at net asset value on the next business day. The
CMA(R) or CBA(R) Systematic Redemption Program is not available if Fund shares
are being purchased within the account pursuant to the
    
 
                                       30
<PAGE>   81
 
   
CMA(R) or CBA(R) Automated Investment Program. For more information on the
CMA(R) or CBA(R) Systematic Redemption Program, eligible shareholders should
contact their Financial Consultant.
    
 
EXCHANGE PRIVILEGE
 
   
     Shareholders of each class of shares of the Fund have an exchange privilege
with certain other MLAM-advised mutual funds. Under the Merrill Lynch Select
Pricing(SM) System, Class A shareholders may exchange Class A shares of the Fund
for Class A shares of a second MLAM-advised mutual fund if the shareholder holds
any Class A shares of the second fund in his account in which the exchange is
made at the time of the exchange or is otherwise eligible to purchase Class A
shares of the second fund. If the Class A shareholder wants to exchange Class A
shares for shares of a second MLAM-advised mutual fund, and the shareholder does
not hold Class A shares of the second fund in his account at the time of the
exchange and is not otherwise eligible to acquire Class A shares of the second
fund, the shareholder will receive Class D shares of the second fund as a result
of the exchange. Class D shares also may be exchanged for Class A shares of a
second MLAM-advised mutual fund at any time as long as, at the time of the
exchange, the shareholder holds Class A shares of the second fund in the account
in which the exchange is made or is otherwise eligible to purchase Class A
shares of the second fund. Class B, Class C and Class D shares are exchangeable
with shares of the same class of other MLAM-advised mutual funds. For purposes
of computing the CDSC that may be payable upon a disposition of the shares
acquired in the exchange, the holding period for the previously owned shares of
the Fund is "tacked" to the holding period for the newly acquired shares of the
other fund as more fully described below. Class A, Class B, Class C and Class D
shares are also exchangeable for shares of certain MLAM-advised money market
funds as follows: Class A shares may be exchanged for shares of Merrill Lynch
Ready Assets Trust, Merrill Lynch Retirement Reserves Money Fund (available only
for exchanges within certain retirement plans), Merrill Lynch U.S.A. Government
Reserves and Merrill Lynch U.S. Treasury Money Fund; Class B, Class C and Class
D shares may be exchanged for shares of Merrill Lynch Government Fund, Merrill
Lynch Institutional Fund, Merrill Lynch Institutional Tax-Exempt Fund and
Merrill Lynch Treasury Fund. Shares with a net asset value of at least $100 are
required to qualify for the exchange privilege, and any shares utilized in an
exchange must have been held by the shareholder for 15 days. It is contemplated
that the exchange privilege may be applicable to other new mutual funds whose
shares may be distributed by the Distributor.
    
 
   
     Exchanges of Class A or Class D shares outstanding ("outstanding Class A or
Class D shares") for Class A or Class D shares of another MLAM-advised mutual
fund ("new Class A or Class D shares") are transacted on the basis of relative
net asset value per Class A or Class D share, respectively, plus an amount equal
to the difference, if any, between the sales charge previously paid on the
outstanding Class A or Class D shares and the sales charge payable at the time
of the exchange on the new Class A or Class D shares. With respect to
outstanding Class A or Class D shares as to which previous exchanges have taken
place, the "sales charge previously paid" shall include the aggregate of the
sales charges paid with respect to such Class A or Class D shares in the initial
purchase and any subsequent exchange. Class A or Class D shares issued pursuant
to dividend reinvestment are sold on a no-load basis in each of the funds
offering Class A or Class D shares. For purposes of the exchange privilege,
Class A or Class D shares acquired through dividend reinvestment shall be deemed
to have been sold with a sales charge equal to the sales charge previously paid
on the Class A or Class D shares on which the dividend was paid. Based on this
formula, Class A and Class D shares of the Fund generally may be exchanged into
Class A or Class D shares of the other funds or into shares of certain money
market funds without a sales charge.
    
 
                                       31
<PAGE>   82
 
     In addition, each of the funds with Class B and Class C shares outstanding
("outstanding Class B or Class C shares") offers to exchange its outstanding
Class B or Class C shares, respectively, of another MLAM-advised mutual fund
("new Class B or Class C shares") on the basis of relative net asset value per
Class B or Class C share, without the payment of any CDSC that might otherwise
be due on redemption of the outstanding shares. Class B shareholders of the Fund
exercising the exchange privilege will continue to be subject to the Fund's CDSC
schedule if such schedule is higher than the CDSC schedule relating to the new
Class B shares acquired through use of the exchange privilege. In addition,
Class B shares of the Fund acquired through use of the exchange privilege will
be subject to the Fund's CDSC schedule if such schedule is higher than the CDSC
schedule relating to the Class B shares of the fund from which the exchange has
been made. For purposes of computing the sales charge that may be payable on a
disposition of the new Class B or Class C shares, the holding period for the
outstanding Class B or Class C shares is "tacked" to the holding period of the
new Class B or Class C shares. For example, an investor may exchange Class B
shares of the Fund for those of Merrill Lynch Special Value Fund, Inc. ("Special
Value Fund") after having held the Fund's Class B shares for two and a half
years. The 2% CDSC that generally would apply to a redemption would not apply to
the exchange. Three years later the investor may decide to redeem the Class B
shares of Special Value Fund and receive cash. There will be no CDSC due on this
redemption, since by "tacking" the two and a half year holding period of the
Fund's Class B shares to the three year holding period for the Special Value
Fund Class B shares, the investor will be deemed to have held the new Class B
shares for more than five years.
 
   
     Shareholders also may exchange shares of the Fund into shares of certain
money market funds advised by the Manager or its affiliates, but the period of
time that Class B or Class C shares are held in a money market fund will not
count towards satisfaction of the holding period requirement for purposes of
reducing the CDSC or, with respect to Class B shares, towards satisfaction of
the conversion period. However, shares of a money market fund which were
acquired as a result of an exchange for Class B or Class C shares of the Fund
may, in turn, be exchanged back into Class B or Class C shares, respectively, of
any fund offering such shares, in which event the holding period for Class B or
Class C shares of the newly-acquired fund will be aggregated with previous
holding periods for purposes of reducing the CDSC. Thus, for example, an
investor may exchange Class B shares of the Fund for shares of Merrill Lynch
Institutional Fund ("Institutional Fund") after having held the Fund Class B
shares for two and a half years and three years later decide to redeem the
shares of Institutional Fund for cash. At the time of this redemption, the 2%
CDSC that would have been due had the Class B shares of the Fund been redeemed
for cash rather than exchanged for shares of Institutional Fund will be payable.
If, instead of such redemption the shareholder exchanged such shares for Class B
shares of a fund which the shareholder continued to hold for an additional two
and a half years, any subsequent redemption would not incur a CDSC.
    
 
     Before effecting an exchange, shareholders should obtain a currently
effective prospectus of the fund into which the exchange is to be made.
 
   
     To exercise the exchange privilege, a shareholder should contact his or her
Merrill Lynch Financial Consultant, who will advise the Fund of the exchange.
Shareholders of the Fund, and shareholders of the other funds described above
with shares for which certificates have not been issued, may exercise the
exchange privilege by wire through their securities dealers. The Fund reserves
the right to require a properly completed Exchange Application. This exchange
privilege may be modified or terminated at any time in accordance with the rules
of the Commission. The Fund reserves the right to limit the number of times an
investor may exercise the exchange privilege. Certain funds may suspend the
continuous offering of their shares at any time
    
 
                                       32
<PAGE>   83
 
and thereafter may resume such offering from time to time. The exchange
privilege is available only to U.S. shareholders in states where the exchange
legally may be made.
 
                            DISTRIBUTIONS AND TAXES
 
   
     The Trust intends to continue to qualify the Fund for the special tax
treatment afforded regulated investment companies ("RICs") under the Internal
Revenue Code of 1986, as amended (the "Code"). If it so qualifies, the Fund (but
not its shareholders) will not be subject to Federal income tax to the extent
that it distributes its net investment income and net realized capital gains.
The Trust intends to cause the Fund to distribute substantially all of such
income. So long as the Fund qualifies as a RIC under the Code, it will not be
subject to any Maryland income tax.
    
 
     As discussed in the Fund's Prospectus, the Trust has established other
series in addition to the Fund (together with the Fund, the "Series"). Each
Series of the Trust is treated as a separate corporation for Federal income tax
purposes. Each Series, therefore, is considered to be a separate entity in
determining its treatment under the rules for RICs described in the Prospectus.
Losses in one Series do not offset gains in another Series, and the requirements
(other than certain organizational requirements) for qualifying for RIC status
are determined for each Series at the Series level rather than at the Trust
level.
 
     The Code requires a RIC to pay a nondeductible 4% excise tax to the extent
the RIC does not distribute during each calendar year, 98% of its ordinary
income, determined on a calendar year basis, and 98% of its capital gains,
determined, in general, on an October 31 year end, plus certain undistributed
amounts from previous years. The required distributions, however, are based only
on the taxable income of a RIC. The excise tax, therefore, generally will not
apply to the tax-exempt income of a RIC, such as the Fund, that pays
exempt-interest dividends.
 
   
     The Trust intends to qualify the Fund to pay "exempt-interest dividends" as
defined in Section 852(b)(5) of the Code. Under such Section, if, at the close
of each quarter of the Fund's taxable year, at least 50% of the value of the
Fund's total assets consists of obligations exempt from Federal income tax
("tax-exempt obligations") under Section 103(a) of the Code (relating generally
to obligations of a state or local governmental unit), the Fund shall be
qualified to pay exempt-interest dividends to its Class A, Class B, Class C and
Class D shareholders (together, the "shareholders"). Exempt-interest dividends
are dividends or any part thereof paid by the Fund which are attributable to
interest on tax-exempt obligations and designated by the Trust as
exempt-interest dividends in a written notice mailed to the Fund's shareholders
within 60 days after the close of the Fund's taxable year. For this purpose, the
Fund will allocate interest from tax-exempt obligations (as well as ordinary
income, capital gains and tax preference items discussed below) among the Class
A, Class B, Class C and Class D shareholders according to a method (which it
believes is consistent with the Commission's rule permitting the issuance and
sale of multiple classes of shares) that is based on the gross income allocable
to Class A, Class B, Class C and Class D shareholders during the taxable year,
or such other method as the Internal Revenue Service may prescribe. To the
extent that the dividends distributed to the Fund's shareholders are derived
from interest income exempt from Federal income tax under Code Section 103(a)
and are properly designated as exempt-interest dividends, they will be
excludable from a shareholder's gross income for Federal income tax purposes.
Exempt-interest dividends are included, however, in determining the portion, if
any, of a person's social security benefits and railroad retirement benefits
subject to Federal income taxes. Interest on indebtedness incurred or continued
to purchase or carry shares of a RIC
    
 
                                       33
<PAGE>   84
 
   
paying exempt-interest dividends, such as the Fund, will not be deductible by
the investor for Federal income tax or Maryland income tax purposes to the
extent attributable to exempt-interest dividends. Shareholders are advised to
consult their tax advisers with respect to whether exempt-interest dividends
retain the exclusion under Code Section 103(a) if a shareholder would be treated
as a "substantial user" or "related person" under Code Section 147(a) with
respect to property financed with the proceeds of an issue of "industrial
development bonds" or "private activity bonds," if any, held by the Fund.
    
 
   
     The portion of the Fund's exempt-interest dividends paid from interest
received by the Fund from Maryland Municipal Bonds and properly identified in a
year-end statement also will be exempt from Maryland personal income taxes.
Corporate shareholders and shareholders subject to income taxation by states
other than Maryland will realize a lower after tax rate of return than Maryland
shareholders since the dividends distributed by the Fund generally will not be
exempt, to any significant degree, from income taxation by such other states.
The Trust will inform shareholders annually regarding the portion of the Fund's
distributions which constitutes exempt-interest dividends and the portion which
is exempt from Maryland income taxes. The Fund will allocate exempt-interest
dividends among Class A, Class B, Class C and Class D shareholders for Maryland
income tax purposes based on a method similar to that described above for
Federal income tax purposes.
    
 
   
     Maryland presently includes in Maryland taxable income a portion of certain
items of tax preference as defined in the Code. Interest paid on certain private
activity bonds constitutes such a tax preference if the bonds (i) are not
Maryland Municipal Bonds or (ii) are Maryland Municipal Bonds issued by U.S.
possessions. Accordingly, up to 50% of any distributions of the Fund's portfolio
attributable to such private activity bonds may not be exempt from Maryland
State and local individual income taxes.
    
 
     Shares of the Fund will not be subject to the Maryland personal property
tax.
 
   
     To the extent that the Fund's distributions are derived from interest on
its taxable investments or from an excess of net short-term capital gains over
net long-term capital losses ("ordinary income dividends"), such distributions
are considered taxable ordinary income for Federal and Maryland income tax
purposes. Distributions, if any, from an excess of net long-term capital gains
over net short-term capital losses derived from the sale of securities or from
certain transactions in futures or options ("capital gain dividends") are
taxable as long-term capital gains for Federal income tax purposes, regardless
of the length of time the shareholder has owned Fund shares, and, for Maryland
income tax purposes, are treated as capital gains which are taxed at ordinary
income tax rates unless derived from the sale of Maryland Municipal Bonds (other
than obligations issued by U.S. possessions). Distributions by the Fund, whether
from exempt-interest income, ordinary income or capital gains will not be
eligible for the dividends received deduction allowed to corporations under the
Code.
    
 
     All or a portion of the Fund's gain from the sale or redemption of
tax-exempt obligations purchased at a market discount will be treated as
ordinary income rather than capital gain. This rule may increase the amount of
ordinary income dividends received by shareholders. Distributions in excess of
the Fund's earnings and profits will first reduce the adjusted tax basis of a
holder's shares and, after such adjusted tax basis is reduced to zero, will
constitute capital gains to such holder (assuming the shares are held as a
capital asset). Any loss upon the sale or exchange of Fund shares held for six
months or less will be treated as long-term capital loss to the extent of
capital gain dividends received by the shareholder. In addition, such loss will
be disallowed to the extent of any exempt-interest dividends received by the
shareholder. If the Fund pays a dividend in January which was declared in the
previous October, November or December to shareholders of record on a specific
 
                                       34
<PAGE>   85
 
date in one of such months, then such dividend will be treated for tax purposes
as being paid by the Fund and received by its shareholders on December 31 of the
year in which such dividend was declared.
 
   
     The Code subjects interest received on certain otherwise tax-exempt
securities to an alternative minimum tax. The alternative minimum tax applies to
interest received on certain "private activity bonds" issued after August 7,
1986. Private activity bonds are bonds which, although tax-exempt, are used for
purposes other than those generally performed by governmental units and which
benefit non-governmental entities (e.g., bonds used for industrial development
or housing purposes). Income received on such bonds is classified as an item of
"tax preference," which could subject certain investors in such bonds, including
shareholders of the Fund, to an alternative minimum tax. The Fund will purchase
such "private activity bonds" and the Trust will report to shareholders within
60 days after the Fund's taxable year-end the portion of the Fund's dividends
declared during the year which constitutes an item of tax preference for
alternative minimum tax purposes. The Code further provides that corporations
are subject to an alternative minimum tax based, in part, on certain differences
between taxable income as adjusted for other tax preferences and the
corporation's "adjusted current earnings", which more closely reflect a
corporation's economic income. Because an exempt-interest dividend paid by the
Fund will be included in adjusted current earnings, a corporate shareholder may
be required to pay alternative minimum tax on exempt-interest dividends paid by
the Fund.
    
 
   
     The Fund may invest in high yield securities rated as described in the
Prospectus. Furthermore, the Fund may also invest in instruments the return on
which includes nontraditional features such as indexed principal or interest
payments ("nontraditional instruments"). These instruments may be subject to
special tax rules under which the Fund may be required to accrue and distribute
income before amounts due under the obligations are paid. In addition, it is
possible that all or a portion of the interest payments on such high yield
securities and/or nontraditional instruments could be recharacterized as taxable
ordinary income.
    
 
     No gain or loss will be recognized by Class B shareholders on the
conversion of their Class B shares into Class D shares. A shareholder's basis in
the Class D shares acquired will be the same as such shareholder's basis in the
Class B shares converted, and the holding period of the acquired Class D shares
will include the holding period for the converted Class B shares.
 
   
     If a shareholder exercises an exchange privilege within 90 days of
acquiring the shares, then the loss the shareholder can recognize on the
exchange will be reduced (or the gain increased) to the extent any sales charge
paid to the Fund on the exchanged shares reduces any sales charge such
shareholder would have owed upon purchase of the new shares in the absence of
the exchange privilege. Instead, such sales charge will be treated as an amount
paid for the new shares.
    
 
     A loss realized on a sale or exchange of shares of the Fund will be
disallowed if other Fund shares are acquired (whether through the automatic
reinvestment of dividends or otherwise) within a 61-day period beginning 30 days
before and ending 30 days after the date that the shares are disposed of. In
such a case, the basis of the shares acquired will be adjusted to reflect the
disallowed loss.
 
   
     Ordinary income dividends paid to shareholders who are nonresident aliens
or foreign entities will be subject to a 30% U.S. withholding tax under existing
provisions of the Code applicable to foreign individuals and entities unless a
reduced rate of withholding or a withholding exemption is provided under
applicable treaty law. Nonresident shareholders are urged to consult their own
tax advisors concerning the applicability of the U.S. withholding tax.
    
 
                                       35
<PAGE>   86
 
     Under certain provisions of the Code, some shareholders may be subject to a
31% withholding tax on certain ordinary income dividends and on capital gain
dividends and redemption payments ("backup withholding"). Generally,
shareholders subject to backup withholding will be those for whom no certified
taxpayer identification number is on file with the Trust or who, to the Trust's
knowledge, have furnished an incorrect number. When establishing an account, an
investor must certify under penalty of perjury that such number is correct and
that such investor is not otherwise subject to backup withholding.
 
     The Code provides that every person 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 Fund) during the taxable
year.
 
ENVIRONMENTAL TAX
 
   
     The Code previously imposed a deductible tax (the "Environmental Tax") on a
corporation's modified alternative minimum taxable income (computed without
regard to the alternative tax net operating loss deduction and the deduction for
the Environmental Tax) at a rate of $12 per $10,000 (0.12%) of alternative
minimum taxable income in excess of $2,000,000. The Environmental Tax has
expired for taxable years beginning after December 31, 1995, but may be
reinstated in the future. The Environmental Tax was imposed even if the
corporation was not required to pay an alternative minimum tax because the
corporation's regular income tax liability exceeded its minimum tax liability.
The Code provides, however, that a RIC, such as the Fund, would not be subject
to the Environmental Tax. However, exempt-interest dividends paid by the Fund
that create alternative minimum taxable income for corporate shareholders (as
described above) could subject corporate shareholders of the Fund to the
Environmental Tax.
    
 
TAX TREATMENT OF OPTION AND FUTURES TRANSACTIONS
 
   
     The Fund may purchase or sell municipal bond index futures contracts and
interest rate futures contracts on U.S. Government securities ("financial
futures contracts"). The Fund may also purchase and write call and put options
on such financial futures contracts. In general, unless an election is available
to the Fund or an exception applies, such options and financial futures
contracts that are "Section 1256 contracts" will be "marked to market" for
Federal income tax purposes at the end of each taxable year, i.e., each such
option or financial futures contract will be treated as sold for its fair market
value on the last day of the taxable year, and any gain or loss from
transactions in options and financial futures contracts will be 60% long-term
and 40% short-term capital gain or loss. Application of these rules to Section
1256 contracts held by the Fund may alter the timing and character of
distributions to shareholders. The mark-to-market rules outlined above, however,
will not apply to certain transactions entered into by the Fund solely to reduce
the risk of changes in price or interest rates with respect to its investments.
    
 
   
     Code Section 1092, which applies to certain "straddles," may affect the
taxation of the Fund's sales of securities and transactions in financial futures
contracts and related options. Under Section 1092, the Fund may be required to
postpone recognition for tax purposes of losses incurred in certain sales of
securities and certain closing transactions in financial futures contracts or
the related options.
    
 
     One of the requirements for qualification as a RIC is that less than 30% of
the Fund's gross income be derived from gains from the sale or other disposition
of securities held for less than three months. Accordingly,
 
                                       36
<PAGE>   87
 
the Fund may be restricted in effecting closing transactions within three months
after entering into an option or financial futures contract.
                            ------------------------
 
   
     The foregoing is a general and abbreviated summary of the applicable
provisions of the Code, Treasury regulations and Maryland tax laws presently in
effect. For the complete provisions, reference should be made to the pertinent
Code sections, the Treasury regulations promulgated thereunder and the
applicable Maryland tax laws. The Code and the Treasury regulations, as well as
the Maryland tax laws, are subject to change by legislative, judicial or
administrative action either prospectively or retroactively.
    
 
   
     Shareholders are urged to consult their own tax advisors regarding the
availability of any exemptions from state or local taxes (other than those
imposed by Maryland) and with specific questions as to Federal, state, local or
foreign taxes.
    
 
                                PERFORMANCE DATA
 
     From time to time the Fund may include its average annual total return and
other total return data, as well as yield and tax-equivalent yield, in
advertisements or information furnished to present or prospective shareholders.
From time to time, the Fund may include the Fund's Morningstar risk-adjusted
performance ratings in advertisements or supplemental sales literature. Total
return, yield and tax-equivalent yield figures are based on the Fund's
historical performance and are not intended to indicate future performance.
Average annual total return, yield and tax-equivalent yield are determined
separately for Class A, Class B, Class C and Class D shares in accordance with
formulas specified by the Commission.
 
     Average annual total return quotations for the specified periods are
computed by finding the average annual compounded rates of return (based on net
investment income and any realized and unrealized capital gains or losses on
portfolio investments over such periods) that would equate the initial amount
invested to the redeemable value of such investment at the end of each period.
Average annual total return is computed assuming all dividends and distributions
are reinvested and taking into account all applicable recurring and nonrecurring
expenses, including the maximum sales charge in the case of Class A and Class D
shares and the CDSC that would be applicable to a complete redemption of the
investment at the end of the specified period in the case of the Class B and
Class C shares.
 
     The Fund also may quote annual, average annual and annualized total return
and aggregate total return performance data, both as a percentage and as a
dollar amount based on a hypothetical $1,000 investment, for various periods
other than those noted below. Such data will be computed as described above,
except that (1) as required by the periods of the quotations, actual annual,
annualized or aggregate data, rather than average annual data, may be quoted and
(2) the maximum applicable sales charges will not be included with respect to
annual or annualized rates of return calculations. Aside from the impact on the
performance data calculations of including or excluding the maximum applicable
sales charges, actual annual or annualized total return data generally will be
lower than average annual total return data since the average rates of return
reflect compounding of return; aggregate total return data generally will be
higher than average annual total return data since the aggregate rates of return
reflect compounding over a longer period of time.
 
                                       37
<PAGE>   88
 
     Set forth below is the total return, yield and tax-equivalent yield
information for Class A, Class B, Class C and Class D shares of the Fund for the
periods indicated.
   
<TABLE>
<CAPTION>
                                      CLASS A SHARES                         CLASS B SHARES                CLASS C SHARES
                           -------------------------------------  -------------------------------------  ------------------
                                                  REDEEMABLE                             REDEEMABLE
                               EXPRESSED          VALUE OF A          EXPRESSED          VALUE OF A          EXPRESSED
                            AS A PERCENTAGE      HYPOTHETICAL      AS A PERCENTAGE      HYPOTHETICAL      AS A PERCENTAGE
                               BASED ON A      $1,000 INVESTMENT      BASED ON A      $1,000 INVESTMENT      BASED ON A
                              HYPOTHETICAL        AT THE END         HYPOTHETICAL        AT THE END         HYPOTHETICAL
          PERIOD           $1,000 INVESTMENT     OF THE PERIOD    $1,000 INVESTMENT     OF THE PERIOD    $1,000 INVESTMENT
- -------------------------- ------------------  -----------------  ------------------  -----------------  ------------------
<S>                        <C>                 <C>                <C>                 <C>                <C>
                                                              AVERAGE ANNUAL TOTAL RETURN
                                                      (INCLUDING MAXIMUM APPLICABLE SALES CHARGE)
One year ended July 31,
 1996.....................         1.62%           $1,016.20              1.19%           $1,011.90              4.18%
Inception (October 29,
 1993) to July 31, 1996...         0.89%           $1,024.70              1.22%           $1,034.00
Inception (October 21,
 1994) to July 31, 1996...                                                                                       7.72%
                                                                  ANNUAL TOTAL RETURN
                                                      (EXCLUDING MAXIMUM APPLICABLE SALES CHARGE)
Year ended July 31,
 1996.....................         5.85%           $1,058.50              5.19%           $1,051.90              5.18%
Year ended July 31,
 1995.....................         5.39%           $1,053.90              4.96%           $1,049.60
Inception (October 29,
 1993) to July 31, 1994...        (4.32%)          $  956.80             (4.68%)          $  953.20
Inception (October 21,
 1994) to July 31, 1995...                                                                                       8.51%
                                                                  AGGREGATE TOTAL RETURN
                                                      (INCLUDING MAXIMUM APPLICABLE SALES CHARGE)
Inception (October 29,
 1993) to July 31, 1996...         2.47%           $1,024.70              3.40%           $1,034.00
Inception (October 21,
 1994) to July 31, 1996...                                                                                      14.13%
                                                                          YIELD
30 days ended July 31,
 1996.....................         4.63%                                  4.31%                                  4.21%
                                                                   TAX-EQUIVALENT YIELD*
30 days ended July 31,
 1996.....................         6.43%                                  5.99%                                  5.85%
 
<CAPTION>
                                                          CLASS D SHARES
                                               -------------------------------------
                               REDEEMABLE                             REDEEMABLE
                               VALUE OF A          EXPRESSED          VALUE OF A
                              HYPOTHETICAL      AS A PERCENTAGE      HYPOTHETICAL
                            $1,000 INVESTMENT      BASED ON A      $1,000 INVESTMENT
                               AT THE END         HYPOTHETICAL        AT THE END
          PERIOD              OF THE PERIOD    $1,000 INVESTMENT     OF THE PERIOD
- --------------------------  -----------------  ------------------  -----------------
<S>                        <C>                 <C>                 <C>
 
One year ended July 31,
 1996.....................      $1,041.80              1.40%           $1,014.00
Inception (October 29,
 1993) to July 31, 1996...
Inception (October 21,
 1994) to July 31, 1996...      $1,141.30              5.76%           $1,104.70
 
Year ended July 31,
 1996.....................      $1,051.80              5.63%           $1,056.30
Year ended July 31,
 1995.....................
Inception (October 29,
 1993) to July 31, 1994...
Inception (October 21,
 1994) to July 31, 1995...      $1,085.10              8.94%           $1,089.40
 
Inception (October 29,
 1993) to July 31, 1996...
Inception (October 21,
 1994) to July 31, 1996...      $1,141.30             10.47%           $1,104.70
 
30 days ended July 31,
 1996.....................                             4.53%
 
30 days ended July 31,
 1996.....................                             6.29%
</TABLE>
    
 
- ---------------
   
 * Based on a Federal income tax rate of 28%.
    
 
   
     In order to reflect the reduced sales charges in the case of Class A or
Class D shares or the waiver of the CDSC in the case of Class B or Class C
shares applicable to certain investors, as described under "Purchase of Shares"
and "Redemption of Shares", respectively, the total return data quoted by the
Fund in advertisements directed to such investors may take into account the
reduced, and not the maximum, sales charge or may take into account the CDSC and
therefore may reflect greater total return since, due to the reduced sales
charges or the waiver of sales charges, a lower amount of expenses is deducted.
    
 
                                       38
<PAGE>   89
 
                              GENERAL INFORMATION
 
DESCRIPTION OF SHARES
 
   
     The Declaration of Trust provides that the Trust shall be comprised of
separate Series ("Series") each of which will consist of a separate portfolio
which will issue separate shares. The Trust is presently comprised of the Fund,
Merrill Lynch Arizona Municipal Bond Fund, Merrill Lynch Arkansas Municipal Bond
Fund, Merrill Lynch Colorado Municipal Bond Fund, Merrill Lynch Connecticut
Municipal Bond Fund, Merrill Lynch Florida Municipal Bond Fund, Merrill Lynch
Massachusetts Municipal Bond Fund, Merrill Lynch Michigan Municipal Bond Fund,
Merrill Lynch Minnesota Municipal Bond Fund, Merrill Lynch New Jersey Municipal
Bond Fund, Merrill Lynch New Mexico Municipal Bond Fund, Merrill Lynch New York
Municipal Bond Fund, Merrill Lynch North Carolina Municipal Bond Fund, Merrill
Lynch Ohio Municipal Bond Fund, Merrill Lynch Oregon Municipal Bond Fund,
Merrill Lynch Pennsylvania Municipal Bond Fund and Merrill Lynch Texas Municipal
Bond Fund. The Trustees are authorized to create an unlimited number of Series
and, with respect to each Series, to issue an unlimited number of full and
fractional shares of beneficial interest, par value $.10 per share, of different
classes and to divide or combine the shares into a greater or lesser number of
shares without thereby changing the proportionate beneficial interests in the
Series. Shareholder approval is not necessary for the authorization of
additional Series or classes of a Series of the Trust. At the date of this
Statement of Additional Information, the shares of the Fund are divided into
Class A, Class B, Class C and Class D shares. Class A, Class B, Class C and
Class D shares represent interests in the same assets of the Fund and are
identical in all respects except that the Class B, Class C and Class D shares
bear certain expenses related to the account maintenance and/or distribution of
such shares and have exclusive voting rights with respect to matters relating to
such account maintenance and/or distribution expenditures. The Board of Trustees
of the Trust may classify and reclassify the shares of any Series into
additional classes at a future date.
    
 
     All shares of the Trust have equal voting rights, except that only shares
of the respective Series are entitled to vote on matters concerning only that
Series and, as noted above, Class B, Class C and Class D shares will have
exclusive voting rights with respect to matters relating to the account
maintenance and/or distribution expenses being borne solely by such class. Each
issued and outstanding share is entitled to one vote and to participate equally
in dividends and distributions declared by the respective Series and in the net
assets of such Series upon liquidation or dissolution remaining after
satisfaction of outstanding liabilities, except that, as noted above, expenses
related to the account maintenance and/or distribution of the Class B, Class C
and Class D shares are borne solely by such class. There normally will be no
meeting of shareholders for the purposes of electing Trustees unless and until
such time as less than a majority of the Trustees holding office have been
elected by shareholders, at which time the Trustees then in office will call a
shareholders' meeting for the election of Trustees. Shareholders may, in
accordance with the terms of the Declaration of Trust, cause a meeting of
shareholders to be held for the purpose of voting on the removal of Trustees.
Also, the Trust will be required to call a special meeting of shareholders in
accordance with the requirements of the 1940 Act to seek approval of new
management and advisory arrangements, of a material increase in distribution
fees or of a change in the fundamental policies, objectives or restrictions of a
Series.
 
     The obligations and liabilities of a particular Series are restricted to
the assets of that Series and do not extend to the assets of the Trust
generally. The shares of each Series, when issued, will be fully paid and
nonassessable, have no preference, preemptive, conversion, exchange or similar
rights, and are freely transferable. Holders of shares of any Series are
entitled to redeem their shares as set forth elsewhere herein
 
                                       39
<PAGE>   90
 
and in the Prospectus. Shares do not have cumulative voting rights and the
holders of more than 50% of the shares of the Trust voting for the election of
Trustees can elect all of the Trustees if they choose to do so and in such event
the holders of the remaining shares would not be able to elect any Trustees. No
amendments may be made to the Declaration of Trust without the affirmative vote
of a majority of the outstanding shares of the Trust.
 
   
     The Manager provided the initial capital for the Fund by purchasing 10,000
shares of the Fund for $100,000. Such shares were acquired for investment and
can only be disposed of by redemption. The organizational expenses of the Fund
were paid by the Fund and are being amortized over a period not exceeding five
years. The proceeds realized by the Manager (or any subsequent holder) upon the
redemption of any of the shares initially purchased by it will be reduced by the
proportionate amount of unamortized organizational expenses which the number of
shares redeemed bears to the number of shares initially purchased. Such
organizational expenses include certain of the initial organizational expenses
of the Trust which have been allocated to the Fund by the Trustees. If
additional Series are added to the Trust, the organizational expenses will be
allocated among the Series in a manner deemed equitable by the Trustees.
    
 
COMPUTATION OF OFFERING PRICE PER SHARE
 
   
     An illustration of the computation of the offering price for Class A, Class
B, Class C and Class D shares of the Fund based on the value of the Fund's net
assets and number of shares outstanding on July 31, 1996 is calculated as set
forth below.
    
 
   
<TABLE>
<CAPTION>
                                                   CLASS A       CLASS B      CLASS C     CLASS D
                                                  ----------   -----------   ----------   --------
<S>                                               <C>          <C>           <C>          <C>
Net Assets......................................  $1,252,086   $22,053,197   $2,229,384   $646,614
                                                   =========    ==========    =========   ========
Number of Shares Outstanding....................     135,943     2,393,887      241,914     70,216
                                                   =========    ==========    =========   ========
Net Asset Value Per Share (net assets divided by
  number of shares outstanding).................  $     9.21   $      9.21   $     9.22   $   9.21
Sales Charge for Class A and Class D shares:
  4.00% of offering price (4.17% of net asset
  value per share*).............................         .38            **           **        .38
                                                  ----------   -----------   ----------   --------
Offering Price..................................  $     9.59   $      9.21   $     9.22   $   9.59
                                                   =========    ==========    =========   ========
</TABLE>
    
 
- ---------------
 * Rounded to the nearest one-hundredth percent; assumes maximum sales charge is
   applicable.
   
** Class B and Class C shares are not subject to an initial sales charge but may
   be subject to a CDSC on redemption of shares. See "Purchase of
   Shares--Deferred Sales Charge Alternatives--Class B and Class C Shares" in
   the Prospectus and "Redemption of Shares -- Deferred Sales Charges -- Class B
   and Class C Shares" herein.
    
 
INDEPENDENT AUDITORS
 
   
     Deloitte & Touche LLP, 117 Campus Drive, Princeton, New Jersey 08540-6400,
has been selected as the independent auditors of the Fund. The independent
auditors are responsible for auditing the annual financial statements of the
Fund.
    
 
                                       40
<PAGE>   91
 
CUSTODIAN
 
     State Street Bank and Trust Company, P.O. Box 351, Boston, Massachusetts
02101, acts as the custodian of the Fund's assets. The custodian is responsible
for safeguarding and controlling the Fund's cash and securities, handling the
receipt and delivery of securities and collecting interest on the Fund's
investments.
 
TRANSFER AGENT
 
     Merrill Lynch Financial Data Services, Inc., 4800 Deer Lake Drive East,
Jacksonville, Florida 32246-6434, acts as the Trust's transfer agent. The
Transfer Agent is responsible for the issuance, transfer and redemption of
shares and the opening, maintenance and servicing of shareholder accounts. See
"Management of the Trust--Transfer Agency Services" in the Prospectus.
 
LEGAL COUNSEL
 
   
     Brown & Wood LLP, One World Trade Center, New York, New York 10048-0557, is
counsel for the Trust.
    
 
REPORTS TO SHAREHOLDERS
 
     The fiscal year of the Fund ends on July 31 of each year. The Trust sends
to shareholders of the Fund at least semi-annually reports showing the Fund's
portfolio and other information. An annual report, containing financial
statements audited by independent auditors, is sent to shareholders each year.
After the end of each year shareholders will receive Federal income tax
information regarding dividends and capital gains distributions.
 
ADDITIONAL INFORMATION
 
   
     The Prospectus and this Statement of Additional Information do not contain
all the information set forth in the Registration Statement and the exhibits
relating thereto, which the Trust has filed with the Commission, Washington,
D.C., under the Securities Act and the 1940 Act, to which reference is hereby
made.
    
 
     The Declaration of Trust establishing the Trust dated August 2, 1985, a
copy of which, together with all amendments thereto (the "Declaration"), is on
file in the office of the Secretary of The Commonwealth of Massachusetts,
provides that the name "Merrill Lynch Multi-State Municipal Series Trust" refers
to the Trustees under the Declaration collectively as Trustees, but not as
individuals or personally; and no Trustee, shareholder, officer, employee or
agent of the Trust shall be held to any personal liability; nor shall resort be
had to any such person's private property for the satisfaction of any obligation
or claim of the Trust but the "Trust Property" only shall be liable.
 
   
     To the knowledge of the Fund, no person or entity owned beneficially 5% or
more of the Fund's shares on October 1, 1996.
    
 
                                       41
<PAGE>   92
 
                                   APPENDIX I
                        ECONOMIC CONDITIONS IN MARYLAND
 
     The following information is a brief summary of factors affecting the
economy of the state and does not purport to be a complete description of such
factors. Other factors will affect issuers. The summary is based primarily upon
one or more publicly available offering statements relating to debt offerings of
state issuers, however, it has not been updated nor will it be updated during
the year. The Trust has not independently verified the information.
 
     There can be no assurance that future statewide or regional economic
difficulties, and the resulting impact on the financial condition of Maryland
issuers generally, will not adversely affect the market value of Maryland
Municipal Obligations held in the portfolio of the Fund or the ability of
particular obligors to make timely payments of debt service on (or relating to)
those obligations.
 
   
     The State and Its Economy.  Maryland encompasses a geographic area of
12,186 square miles and ranks 42nd among the 50 states in size. Maryland's land
area (exclusive of inland waterways and the 1,726 square miles of the Chesapeake
Bay) is 9,837 square miles. According to the Maryland Office of Planning,
Maryland's population in 1995 was 5,042,400, reflecting an increase of 5.1% from
the 1990 Census which showed a Maryland population of 4,797,893. Maryland's
population is concentrated in urban areas; the eight counties and Baltimore City
located in the Baltimore and Washington corridor contain 37.4% of the State's
land area and 83.3% of its population. Overall Maryland's population per square
mile in 1990 was 487.7. In each Census report since 1940 (except in 1980), the
percentage population increase in Maryland has exceeded the nation as a whole.
    
 
   
     After enjoying rapid economic growth in the 1980's, Maryland has
experienced declining rates of growth in the 1990's. Total personal income in
Maryland grew at annual rates between 6.0% and 10.9% in each of the years 1984
through 1990, but grew at a rate of 3.7% in 1991, 6.0% in 1992, 4.1% in 1993,
4.9% in 1994 and 6.1% in 1995. Similarly, per capita personal income, which had
grown at rates no lower than 6.2% for the period from 1972 to 1989, grew at a
rate of 4.7% in 1990, 1.8% in 1991, 3.3% in 1992, 3.0% in 1993, 3.9% in 1994 and
4.3% in 1995. Unemployment in Maryland peaked in 1982 at 8.4%, then decreased
steadily to a low of 3.7% in 1989. Unemployment increased to 4.7% in 1990, to
6.0% in 1991, to 6.7% in 1992, but in 1993, 1994, and 1995 unemployment
decreased to 6.2%, 5.1% and 5.1%, respectively.
    
 
   
     Retail sales in Maryland decreased by 2.2% in 1991, and grew by 0.2% in
1992, 6.1% in 1993, 9.6% in 1994, and 2.9% in 1995 versus nationwide growth of
0.6%, 4.8%, 6.6%, 7.5% and 5.1% in such years, respectively.
    
 
   
     Services (including mining), wholesale and retail trade, government, and
manufacturing (primarily printing and publishing, food and kindred products,
instruments and related products, industrial machinery, electronic equipment,
and chemical and allied products) are the leading areas of employment in
Maryland. In contrast to the nation as a whole, more people in Maryland are
employed in government than in manufacturing. Between 1975 and 1995,
manufacturing employment decreased 23.6%, while non-manufacturing employment
increased 60.5%.
    
 
   
     State Fiscal Information.  The State's total expenditures for the fiscal
years ending June 30, 1994, June 30, 1995 and June 30, 1996 were $12.351
billion, $13.528 billion and $13.914 billion, respectively. The State's fiscal
year 1997 budget was adopted projecting total expenditures for fiscal year 1997
of $14.631 billion.
    
 
                                       42
<PAGE>   93
 
   
On June 30, 1994 the State's General Fund, representing approximately 55% of
each year's total budget, had a surplus on a budgetary basis of $60 million and
the Revenue Stabilization Account of the State Reserve Fund contained $161.8
million; on June 30, 1995, the General Fund contained a surplus on a budgetary
basis of $26.5 million (after reservation of $106 million for fiscal year 1996
expenses) and the Revenue Stabilization Account of the State Reserve Fund
contained $286.1 million. In April 1995 the State's General Assembly approved a
$14.4 billion budget for fiscal year 1996, an 8.2% increase above the fiscal
1995 spending level. This budget did not include any expenditures based upon
additional revenue from new or broad-based taxes, but included a $270 million
appropriation to the State Reserve Fund, including $200 million to the Revenue
Stabilization Account. When the fiscal year 1996 budget was enacted, the State
projected that it would end the fiscal year with a General Fund surplus of $3.1
million. In December 1995 and March 1996 the State lowered its estimates of
General Fund revenues by a total of $148 million. To address this reduction in
revenues the State, among other things, reduced General Fund appropriations and
transferred $57 million from the Revenue Stabilization Account of the State
Reserve Fund. The balance in the Revenue Stabilization Account on June 30, 1996,
taking into account this transfer, was $461.0 million.
    
 
   
     In April 1996 the General Assembly of the State approved a $14.6 billion
budget for fiscal year 1997, a 1.5% increase over the fiscal year 1996 budget.
This budget includes funds sufficient to meet all fiscal year 1996 deficiencies
and to meet all specific statutory funding requirements. The fiscal year 1997
budget also incorporates $29 million in savings from revisions to the State
personnel system and reform to the welfare and Medicaid programs. The State
projects that it will end its 1997 fiscal year with a General Fund surplus of
$12.9 million and $487.0 million in the Revenue Stabilization Account of the
State Reserve Fund. The State Constitution mandates a balanced budget.
    
 
     State-level Municipal Obligations.  The State of Maryland and its various
political subdivisions issue a number of different kinds of Municipal
Obligations, including general obligation bonds supported by tax collections,
revenue bonds payable from certain identified tax levies or revenue streams,
conduit revenue bonds payable from the repayment of certain loans to authorized
entities such as hospitals, universities and other private entities, and
certificates of participation in tax-exempt municipal leases.
 
     The State of Maryland issues general obligation bonds, debt service on
which is payable (to the extent not paid from other sources) from ad valorem
property taxes. The State Constitution prohibits the contracting of State debt
unless the debt is authorized by a law levying an annual tax or taxes sufficient
to pay the debt service within 15 years and prohibiting the repeal of the tax or
taxes or their use for another purpose until the debt has been paid. The State
also enters into lease-purchase agreements, participation interests in which are
often sold publicly as individual securities. These obligations are subject to
annual appropriation by the General Assembly.
 
   
     As of October, 1996, the State's general obligation bonds were rated "Aaa"
by Moody's Investors Service, Inc. ("Moody's"), "AAA" by Standard & Poor's
Ratings Group ("S&P"), and "AAA" by Fitch Investors Service, Inc. ("Fitch").
There can be no assurance that these ratings will continue.
    
 
   
     The Maryland Department of Transportation issues Consolidated
Transportation Bonds, which are payable out of specific excise taxes, motor
vehicle taxes and corporate income taxes, and from the general revenues of the
Department or from amounts payable under agreements between the Department and
participating counties. Issued to finance highway, port, transit, rail and
aviation facilities, as of September 1996, these bonds were rated "Aa" by
Moody's, "AA" by S&P and "AA" by Fitch. The Maryland
    
 
                                       43
<PAGE>   94
 
   
Transportation Authority, a unit of the Department, issues its own revenue bonds
for transportation facilities, which are payable from certain highway, bridge
and tunnel tolls. These bonds were rated "A+" by S&P as of September, 1996.
There can be no assurance that these ratings will continue.
    
 
     Other State agencies which issue Municipal Obligations include the Maryland
Stadium Authority, which has issued bonds payable from sports facility and other
lease revenues and certain lottery revenues, the Maryland Water Quality
Financing Administration, which issues bonds to provide loans to local
governments for wastewater control projects, the Community Development
Administration of the Department of Housing and Community Development, which
issues mortgage revenue bonds for housing, the Maryland Environmental Service,
which issues bonds secured by the revenues from its various water supply,
wastewater treatment and waste management projects, and the various public
institutions of higher education in the State (which include the University of
Maryland System, Morgan State University, Baltimore City Community College and
St. Mary's College of Maryland), which issue their own revenue bonds. None of
these bonds constitutes debt of the State or is secured by a pledge of the full
faith and credit of the State of Maryland. The issuers of these obligations are
subject to various economic risks and uncertainties, and the credit quality of
the securities issued by them may vary considerably from the credit quality of
obligations backed by the full faith and credit of the State.
 
   
     In addition, a number of State authorities issue conduit revenue bonds,
including the Maryland Health and Higher Educational Facilities Authority, which
issues revenue bonds for nonprofit health care institutions and institutions of
higher education, the Northeast Maryland Waste Disposal Authority, which issues
revenue bonds to finance solid waste disposal facilities, and the Maryland
Industrial Development Financing Authority, the Maryland Economic Development
Corporation and the Maryland Energy Financing Administration, which issue
revenue bonds to finance eligible projects for private borrowers under relevant
State and Federal laws. These bonds are payable solely from the loan payments
made by borrowers and other financing participants, and their credit quality
varies with the financial strengths of these entities.
    
 
     Municipal Obligations of Maryland Local Governments.  Maryland has 24
geographical subdivisions, comprised of 23 counties plus the independent City of
Baltimore, which functions much like a county. Some of the counties and the City
of Baltimore operate pursuant to the provisions of charters or codes of their
own adoption, while others operate pursuant to State statutes.
 
     Maryland counties and the City of Baltimore receive most of their revenues
from ad valorem taxes on real and personal property, individual income taxes,
transfer taxes, miscellaneous taxes and aid from the State. Their expenditures
include public education, public safety, public works, health, public welfare,
court and correctional services, and general governmental costs.
 
     The economic factors affecting the State, as discussed above, also have
affected the counties and the City of Baltimore. In addition, reductions in
State aid caused by State budget deficits have caused the local governments to
trim expenditures and, in some cases, raise taxes.
 
   
     Recent available ratings of the counties and the City of Baltimore are as
follows: general obligation bonds of Montgomery County (abutting Washington,
D.C.) are rated "Aaa" by Moody's and "AAA" by S&P; Anne Arundel County issues
general obligation bonds which are rated "AA+" by both Fitch and S&P and "Aa" by
Moody's; Prince George's County, also in the Washington, D.C. suburbs, issues
general obligation bonds rated "Aa" by Moody's and "AA-" by S&P; Baltimore
County, a separate political subdivision surrounding the City of Baltimore,
issues general obligation bonds rated "Aaa" by Moody's and "AAA" by
    
 
                                       44
<PAGE>   95
 
S&P. The City of Baltimore's general obligation bonds are rated "A1" by Moody's
and "A" by S&P and the other counties in Maryland which are rated by Moody's all
have general obligation bond ratings of "A" or better from Moody's, except for
Allegany County, the bonds of which are rated "Baa" by Moody's. There can be no
assurance that these ratings will continue.
 
   
     Two bi-county agencies issue bonds to finance facilities for Montgomery and
Prince George's Counties. The Washington Suburban Sanitary Commission, which
provides water and sewerage services, issues general obligation bonds rated
"Aa1" by Moody's and "AA" by S&P as of September, 1996. There can be no
assurance that these ratings will continue. The Maryland-National Capital Park
and Planning Commission, which administers a park system for these counties,
issues general obligation bonds that are guaranteed by the county in which the
financed facilities are located.
    
 
     Additionally, many of the municipal corporations in Maryland (such as the
cities of Annapolis, Frederick and Rockville) have issued general obligation
bonds. These municipalities are subject to various economic risks and
uncertainties, and the credit quality of the securities issued by them may vary
considerably from the credit quality of obligations issued by rated Maryland
counties.
 
     Other Issuers of Maryland Municipal Obligations.  Many of Maryland's
counties have established subsidiary agencies with bond issuing powers, such as
sanitary districts, housing authorities, parking revenue authorities and
industrial development authorities. In addition, all Maryland municipalities
have the authority under State law to issue conduit revenue bonds payable from
payments from private borrowers. These entities are subject to various economic
risks and uncertainties, and the credit quality of the securities issued by them
varies with the financial strengths of the respective borrowers.
 
                                       45
<PAGE>   96
 
                                  APPENDIX II
                           RATINGS OF MUNICIPAL BONDS
 
DESCRIPTION OF MOODY'S INVESTORS SERVICE, INC.'S ("MOODY'S") MUNICIPAL BOND
RATINGS
 
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
       payment 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.
 
     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 Aa1,
A1, Baa1, Ba1 and B1.
 
                                       46
<PAGE>   97
 
   
     Short-term Notes: The four ratings of Moody's for short-term notes are
MIG-1/VMIG1, MIG-2/ VMIG2, MIG-3/VMIG3 and MIG-4/VMIG4. MIG-1/VMIG1 denotes
"best quality. . .strong protection by established cash flows"; MIG-2/VMIG2
denotes "high quality" with ample margins of protection; MIG-3/ VMIG3 notes are
of "favorable quality. . .but. . .lacking the undeniable strength of the
preceding grades"; MIG-4/VMIG4 notes are of "adequate quality. . .[p]rotection
commonly regarded as required of an investment security is present. . .there is
specific risk".
    
 
DESCRIPTION OF MOODY'S CORPORATE BOND RATINGS
 
   
     Excerpts from Moody's description of its corporate bond ratings:
Aaa--judged to be the best quality, carry the smallest degree of investment
risk; Aa--judged to be of high quality by all standards; A--possess many
favorable investment attributes and are to be considered as upper medium grade
obligations.
    
 
DESCRIPTION OF MOODY'S COMMERCIAL PAPER RATINGS
 
     Moody's Commercial Paper ratings are opinions of the ability of issuers to
repay punctually promissory obligations not having an original maturity in
excess of nine months. Moody's employs the following three designations, all
judged to be investment grade, to indicate the relative repayment capacity of
rated issuers:
 
     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 earning coverage of fixed financial
charges and high internal cash generation; and 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
effects 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.
 
DESCRIPTION OF STANDARD & POOR'S RATINGS GROUP'S ("STANDARD & POOR'S") MUNICIPAL
DEBT RATINGS
 
     A Standard & Poor's 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.
 
                                       47
<PAGE>   98
 
     The ratings are based on current information furnished by the issuer or
obtained by Standard & Poor's from other sources Standard & Poor's considers
reliable. Standard & Poor's 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 for other circumstances.
 
     The ratings are based, in varying degrees, on the following considerations:
 
I.     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;
 
II.    Nature of and provisions of the obligations;
 
III.   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.
 
AAA    Debt rated "AAA" has the highest rating assigned by Standard & Poor's.
       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 higher-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 for debt in
       higher rated categories.
 
BB
B
CCC
CC
C      Debt rated "BB", "B", "CCC", "CC" and "C" is regarded, on balance, as
       predominately speculative with respect to capacity to pay interest and
       repay principal in accordance with the terms of the obligations. "BB"
       indicates the lowest degree of speculation and "C" the highest degree of
       speculation. While such debt will likely have some quality and protective
       characteristics, these are outweighed by large uncertainties or major
       exposures to adverse conditions.
 
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 Standard &
       Poor's 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.
 
                                       48
<PAGE>   99
 
DESCRIPTION OF STANDARD & POOR'S CORPORATE BOND RATINGS
 
     A Standard & Poor's corporate debt rating is a current assessment of the
creditworthiness of an obligor with respect to a specific obligation. Debt rated
"AAA" has the highest rating assigned by Standard & Poor's. Capacity to pay
interest and repay principal is extremely strong. Debt rated "AA" has a very
strong capacity to pay interest and to repay principal and differs from the
highest rated issues only in small degree. 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 of a higher rated category. 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.
 
     The ratings from "AA" to "BBB" may be modified by the addition of a plus or
minus sign to show relative standing within the major rating categories.
 
DESCRIPTION OF STANDARD & POOR'S COMMERCIAL PAPER RATINGS
 
   
     A Standard & Poor's 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 four categories, ranging from "A" for the
highest quality obligations to "D" for the lowest. Ratings are applicable to
both taxable and tax-exempt commercial paper. Issues assigned the highest rating
are regarded as having the greatest capacity for timely payment. Issues in this
category are further refined with the designation 1, 2 and 3 to indicate the
relative degree of safety. The three designations in the "A" category are as
follows:
    
 
A-1    This designation indicates that the degree of safety regarding timely
       payment is either overwhelming or very 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 strong.
       However, the relative degree of safety is not as overwhelming as for
       issues designated "A-1".
 
A-3    Issues carrying this designation have a satisfactory capacity for timely
       payment. They are, however, somewhat more vulnerable to the adverse
       effects of changes in circumstances than obligations carrying the higher
       designations.
 
B      Issues rated "B" are regarded as having only speculative capacity for
       timely payment.
 
C      This rating is assigned to short-term debt obligations with a doubtful
       capacity for payment.
 
D      Debt rated "D" is in payment default. The "D" rating category is used
       when interest payments or principal payments are not made on the date
       due, even if the applicable grace period has not expired, unless S&P
       believes that such payments will be made during such grace period.
 
     A Commercial Paper Rating is not a recommendation to purchase or sell a
security. The ratings are based on current information furnished to Standard &
Poor's by the issuer and obtained by Standard & Poor's from other sources it
considers reliable. The ratings may be changed, suspended, or withdrawn as a
result of changes in, or unavailability of, such information.
 
                                       49
<PAGE>   100
 
     A Standard & Poor's 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   A very strong or strong capacity to pay principal and interest. Those
       issues determined to possess overwhelming safety characteristics will be
       given a "+" designation.
 
SP-2   A satisfactory capacity to pay principal and interest.
 
SP-3   A speculative capacity to pay principal and interest.
 
     Standard & Poor's may continue to rate note issues with a maturity greater
than three years in accordance with the same rating scale currently employed for
municipal bond ratings.
 
     Unrated: Where no rating has been assigned or where a rating has been
suspended or withdrawn, it may be for reasons unrelated to the quality of the
issue.
 
     Should no rating be assigned, the reason may be one of the following:
 
     1. An application for rating was not received or accepted.
 
     2. The issue or issuer belongs to a group of securities that are not rated
        as a matter of policy.
 
     3. There is a lack of essential data pertaining to the issue or issuer.
 
     4. The issue was privately placed, in which case the rating is not
        published in Standard & Poor's publications.
 
     Suspension or withdrawal may occur if new and material circumstances arise,
the effects of which preclude satisfactory analysis; if there is no longer
available reasonable up-to-date information to permit a judgment to be formed;
if a bond is called for redemption; or for other reasons.
 
DESCRIPTION OF FITCH INVESTORS SERVICE, INC.'S ("FITCH") INVESTMENT GRADE BOND
RATINGS
 
     Fitch investment grade bond ratings provide a guide to investors in
determining the credit risk associated with a particular security. The ratings
represent Fitch's assessment of the issuer's ability to meet the obligations of
a specific debt issue or class of debt in a timely manner.
 
     The rating takes into consideration special features of the issue, its
relationship to other obligations of the issuer, the current and prospective
financial condition and operating performance of the issuer and of any
guarantor, as well as the economic and political environment that might affect
the issuer's future financial strength and credit quality.
 
                                       50
<PAGE>   101
 
     Fitch ratings do not reflect any credit enhancement that may be provided by
insurance policies or financial guaranties unless otherwise indicated.
 
     Bonds that have the same rating are of similar but not necessarily
identical credit quality since the rating categories do not fully reflect small
differences in the degrees of credit risk.
 
     Fitch ratings are not recommendations to buy, sell, or hold any security.
Ratings do not comment on the adequacy of market price, the suitability of any
security for a particular investor, or the tax-exempt nature or taxability of
payments made in respect of any security.
 
     Fitch ratings are based on information obtained from issuers, other
obligors, underwriters, their experts, and other sources Fitch believes to be
reliable. Fitch does not audit or verify the truth or accuracy of such
information. Ratings may be changed, suspended, or withdrawn as a result of
changes in, or the unavailability of, information or for any other reasons.
 
AAA    Bonds considered to be investment grade and of the highest credit
       quality. The obligor has an exceptionally strong ability to pay interest
       and repay principal which is unlikely to be affected by reasonably
       foreseeable events.
 
AA     Bonds considered to be investment grade and of very high credit quality.
       The obligor's ability to pay interest and repay principal is very strong,
       although not quite as strong as bonds rated "AAA". Because bonds rated in
       the "AAA" and "AA" categories are not significantly vulnerable to
       foreseeable future developments, short-term debt of these issuers is
       generally rated "F-1+".
 
A      Bonds considered to be investment grade and of high credit quality. The
       obligor's ability to pay interest and repay principal is considered to be
       strong, but may be more vulnerable to adverse changes in economic
       conditions and circumstances than bonds with higher ratings.
 
BBB    Bonds considered to be investment grade and of satisfactory credit
       quality. The obligor's ability to pay interest and repay principal is
       considered to be adequate. Adverse changes in economic conditions and
       circumstances, however, are more likely to have adverse impact on these
       bonds, and therefore, impair timely payment. The likelihood that the
       ratings of these bonds will fall below investment grade is higher than
       for bonds with higher ratings.
 
     Plus (+) or Minus (-): Plus and minus signs are used with a rating symbol
to indicate the relative position of a credit within the rating category. Plus
and minus signs, however, are not used in the "AAA" category.
 
     Credit Trend Indicator: Credit trend indicators show whether credit
fundamentals are improving, stable, declining, or uncertain, as follows:
 
Improving    [up arrow]   
Stable       [side to side arrow]
Declining    [down arrow]
Uncertain    [up and down arrow]
 
                                       51
<PAGE>   102
 
     Credit trend indicators are not predictions that any rating change will
occur, and have a longer-term time frame than issues placed on FitchAlert.
 
NR           Indicates that Fitch does not rate the specific issue.
 
CONDITIONAL  A conditional rating is premised on the successful completion of a
             project or the occurrence of a specific event.
 
SUSPENDED    A rating is suspended when Fitch deems the amount of information
             available from the issuer to be inadequate for rating purposes.
 
WITHDRAWN    A rating will be withdrawn when an issue matures or is called or
             refinanced and, at Fitch's discretion, when an issuer fails to
             furnish proper and timely information.
 
FITCH ALERT  Ratings are placed on FitchAlert to notify investors of an
             occurrence that is likely to result in a rating change and the
             likely direction of such change. These are designated as
             "Positive", indicating a potential upgrade, "Negative", for
             potential downgrade, or "Evolving", where ratings may be raised or
             lowered. FitchAlert is relatively short-term, and should be
             resolved within 12 months.
 
DESCRIPTION OF FITCH SPECULATIVE GRADE BOND RATINGS
 
     Fitch speculative grade bond ratings provide a guide to investors in
determining the credit risk associated with a particular security. The ratings
("BB" to "C") represent Fitch's assessment of the likelihood of timely payment
of principal and interest in accordance with the terms of obligation for bond
issues not in default. For defaulted bonds, the rating ("DDD" to "D") is an
assessment of the ultimate recovery value through reorganization or liquidation.
 
     The rating takes into consideration special features of the issue, its
relationship to other obligations of the issuer, the current and prospective
financial condition and operating performance of the issuer and any guarantor,
as well as the economic and political environment that might affect the issuer's
future financial strength.
 
     Bonds that have the same rating are of similar but not necessarily
identical credit quality since rating categories cannot fully reflect the
differences in degrees of credit risk.
 
BB               Bonds are considered speculative. The obligor's ability to pay
                 interest and repay principal may be affected over time by
                 adverse economic changes. However, business and financial
                 alternatives can be identified which could assist the obligor
                 in satisfying its debt service requirements.
 
B                Bonds are considered highly speculative. While bonds in this
                 class are currently meeting debt service requirements, the
                 probability of continued timely payment of principal and
                 interest reflects the obligor's limited margin of safety and
                 the need for reasonable business and economic activity
                 throughout the life of the issue.
 
CCC              Bonds have certain identifiable characteristics which, if not
                 remedied, may lead to default. The ability to meet obligations
                 requires an advantageous business and economic environment.
 
                                       52
<PAGE>   103
 
CC               Bonds are minimally protected. Default in payment of interest
                 and/or principal seems probable over time.
 
C                Bonds are in imminent default in payment of interest or
                 principal.
 
DDD, DD AND D    Bonds are in default on interest and/or principal payments.
                 Such bonds are extremely speculative and should be valued on
                 the basis of their ultimate recovery value in liquidation or
                 reorganization of the obligor. "DDD" represents the highest
                 potential for recovery on these bonds, and "D" represents the
                 lowest potential for recovery.
 
     Plus (+) or Minus (-): Plus and minus signs are used with a rating symbol
to indicate the relative position of a credit within the rating category. Plus
and minus signs, however, are not used in the "DDD", "DD", or "D" categories.
 
DESCRIPTION OF FITCH INVESTMENT GRADE SHORT-TERM RATINGS
 
     Fitch's short-term ratings apply to debt obligations that are payable on
demand or have original maturities of generally up to three years, including
commercial paper, certificates of deposit, medium-term notes, and municipal and
investment notes.
 
     The short-term rating places greater emphasis than a long-term rating on
the existence of liquidity necessary to meet the issuer's obligations in a
timely manner.
 
     Fitch short-term ratings are as follows:
 
F-1+   Exceptionally Strong Credit Quality. Issues assigned this rating are
       regarded as having the strongest degree of assurance for timely payment.
 
F-1    Very Strong Credit Quality. Issues assigned this rating reflect an
       assurance of timely payment only slightly less in degree than issues
       rated "F-1+".
 
F-2    Good Credit Quality. Issues assigned this rating have a satisfactory
       degree of assurance for timely payment, but the margin of safety is not
       as great as for issues assigned "F-1+" and "F-1" ratings.
 
F-3    Fair Credit Quality. Issues assigned this rating have characteristics
       suggesting that the degree of assurance for timely payment is adequate,
       however, near-term adverse changes could cause these securities to be
       rated below investment grade.
 
F-S    Weak Credit Quality. Issues assigned this rating have characteristics
       suggesting a minimal degree of assurance for timely payment and are
       vulnerable to near-term adverse changes in financial and economic
       conditions.
 
D      Default. Issues assigned this rating are in actual or imminent payment
       default.
 
LOC    The symbol "LOC" indicates that the rating is based on a letter of credit
       issued by a commercial bank.
 
INS    The symbol "INS" indicates that the rating is based on an insurance
       policy or financial guaranty issued by an insurance company.
 
                                       53
<PAGE>   104
 
INDEPENDENT AUDITORS' REPORT
The Board of Trustees and Shareholders,
Merrill Lynch Maryland Municipal Bond Fund of
Merrill Lynch Multi-State Municipal Series Trust:
 
   
We have audited the accompanying statement of assets and liabilities, including
the schedule of investments, of Merrill Lynch Maryland Municipal Bond Fund of
Merrill Lynch Multi-State Municipal Series Trust as of July 31, 1996, the
related statements of operations for the year then ended and changes in net
assets for each of the years in the two-year period then ended, and the
financial highlights for each of the years in the two-year period then ended and
for the period October 29, 1993 (commencement of operations) to July 31, 1994.
These financial statements and the financial highlights are the responsibility
of the Fund's management. Our responsibility is to express an opinion on these
financial statements and the financial highlights based on our audits.
    
 
   
We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements and the financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of securities owned at July 31,
1996 by correspondence with the custodian. An audit also includes assessing the
accounting principles used and significant estimates made by management, as well
as evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for our opinion.
    
 
   
In our opinion, such financial statements and financial highlights present
fairly, in all material respects, the financial position of Merrill Lynch
Maryland Municipal Bond Fund of Merrill Lynch Multi-State Municipal Series Trust
as of July 31, 1996, the results of its operations, the changes in its net
assets, and the financial highlights for the respective stated periods in
conformity with generally accepted accounting principles.
    
 
   
Deloitte & Touche LLP
Princeton, New Jersey
September 6, 1996
    
 
                                       54
<PAGE>   105
Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


<TABLE>
SCHEDULE OF INVESTMENTS                                                                                   (in Thousands)
<CAPTION>
S&P      Moody's      Face                                                                                       Value
Ratings  Ratings     Amount                                         Issue                                      (Note 1a)

Maryland--87.0%
<S>      <S>         <C>      <S>                                                                                <C>
AA+      Aa          $  500   Anne Arundel County, Maryland, Consolidated Water and Sewer Refunding Bonds,
                              5.25% due 4/15/2014                                                                $   482

AA+      Aa             765   Anne Arundel County, Maryland, Water and Sewer, GO, 5% due 9/01/2018                   700

AAA      Aaa            500   Baltimore, Maryland, Consolidated Public Improvement Refunding Bonds,
                              GO, UT, Series D, 5.40% due 10/15/2012 (b)                                             496

AA-      Aa2          1,000   Baltimore, Maryland, Port Facilities Revenue Bonds (Consolidated Coal
                              Sales Co.), 6.50% due 12/01/2010                                                     1,078

AAA      Aaa          1,500   Baltimore, Maryland, Wastewater Project, Revenue Refunding Bonds, Series A,
                              5.50% due 7/01/2026 (a)                                                              1,443

AA       Aa             600   Carroll County, Maryland, Registered Revenue Bonds (County Commissioners
                              --Consolidated Public Improvement), UT, 6.50% due 10/01/2024                           650

AA-      Aaa          1,000   Frederick County, Maryland, Public Facilities Refunding Bonds, Series B,
                              6.30% due 7/01/2002 (h)                                                              1,096

                              Maryland Community Development Administration, S/F Program Revenue Bonds
                              (Department of Housing and Community Development):
NR*      Aa             500     4th Series, 6.45% due 4/01/2014                                                      514
NR*      Aa             250     6th Series, 7.05% due 4/01/2017                                                      263
NR*      Aa             490     7th Series, AMT, 7.30% due 4/01/2025                                                 513

                              Maryland Health and Higher Educational Facilities Authority Revenue Bonds:
AAA      Aaa            500     (Greater Baltimore Medical Center), 6.75% due 7/01/2001(h)                           553
NR*      VMIG1++        400     (Pooled Loan Program), VRDN, Series A, 3.60% due 4/01/2035 (i)                       400
A        A              500     Refunding (Memorial Hospital of Cumberland), 6.50% due 7/01/2017                     517
AAA      Aaa          1,000     (University of Maryland Medical Systems), Series A, 6.50% due 7/01/2001 (a)(h)     1,080
AAA      Aaa            625     (University of Maryland Medical Systems), Series B, 7% due 7/01/2022 (a)             732

AAA      Aaa          1,000   Maryland State and Local Facilities Loan, First Series, UT, 5.10% due
                                3/15/2002                                                                          1,024

A-       NR*          1,000   Maryland State Energy Financing Administration, Solid Waste Disposal
                              Revenue Bonds, Limited Obligation (Wheelabrator Water Project), AMT,
                              6.45% due 12/01/2016                                                                 1,019

AAA      Aaa            500   Maryland Transportation Authority, Special Obligation Revenue Bonds
                              (Baltimore/Washington International Airport Project), AMT, Series A,
                              6.25% due 7/01/2014 (a)                                                                519
</TABLE>



PORTFOLIO ABBREVIATIONS

To simplify the listings of Merrill Lynch Maryland Municipal Bond
Fund's portfolio holdings in the Schedule of Investments, we have
abbreviated the names of many of the securities according to the
list at right.


AMT        Alternative Minimum Tax (subject to)
GO         General Obligation Bonds
PCR        Pollution Control Revenue Bonds
S/F        Single-Family
STRIPES    Short-Term Rate Inverse Payment Exempt Securities
UT         Unlimited Tax
VRDN       Variable Rate Demand Notes



                                       55

<PAGE>   106


Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


<TABLE>
SCHEDULE OF INVESTMENTS (concluded)                                                                     (in Thousands)
<CAPTION>
S&P      Moody's      Face                                                                                       Value
Ratings  Ratings     Amount                                         Issue                                      (Note 1a)

Maryland (concluded)
<S>      <S>         <C>      <S>                                                                                <C>
                              Maryland Water Quality Financing Administration, Revolving Loan Fund
                              Revenue Bonds, Series A:
AA       Aa          $  300     6.375% due 9/01/2010                                                             $   319
AA       Aa             500     6.55% due 9/01/2014                                                                  532

AAA      Aaa            500   Montgomery County, Maryland, Consolidated Public Improvement Bonds, UT,
                              Series A, 5.90% due 10/01/2008                                                         528

AAA      Aaa            500   Montgomery County, Maryland, Parking Revenue Refunding Bonds (Silver
                              Spring Parking Lot), Series A, 6.25% due 6/01/2009 (a)                                 532

AAA      NR*            500   Prince Georges County, Maryland, Housing Authority, Mortgage Revenue
                              Refunding Bonds (Parker Apartments Project), Series A, 7.25% due
                              11/20/2016 (f)                                                                         532

AAA      NR*            935   Prince Georges County, Maryland, Housing Authority, S/F Mortgage Revenue
                              Bonds, AMT, Series A, 6.60% due 12/01/2025 (g)                                         955

                              Prince Georges County, Maryland, PCR, Refunding (Potomac Electric Project):
A        A1           1,000     5.75% due 3/15/2010                                                                1,024
A        A1             250     6.375% due 1/15/2023                                                                 260

A1+      VMIG1++      1,000   University of Maryland, University Revenue Bonds (Revolving Equipment Loan
                              Program), VRDN, Series B, 3.30% due 7/01/2015 (e)(i)                                 1,000

AAA      Aaa          1,000   Washington, D.C. Metropolitan Area Transportation Authority, Gross Revenue
                              Refunding Bonds, 5.25% due 7/01/2014 (a)                                               957

                              Washington Suburban Sanitation District, Maryland, Registered, General
                              Construction Bonds, UT:
AA       Aa1            500     6.625% due 6/01/2017                                                                 541
AA       Aa1          1,500     5.25% due 6/01/2019                                                                1,422
AAA      Aaa            585     Refunding, 6.40% due 11/01/2001 (h)                                                  642
AA       Aaa            400     Second Series, 6.90% due 6/01/2001 (h)                                               445

Puerto Rico--11.9%

A1+      VMIG1++      1,000   Puerto Rico Commonwealth, Government Development Bank, Refunding, VRDN,
                              3.20% due 12/01/2015 (i)                                                             1,000

AAA      NR*            510   Puerto Rico Commonwealth, Highway and Transportation Authority, Highway
                              Revenue Bonds, Series T, 6.625% due 7/01/2002 (h)                                      569

                              Puerto Rico Electric Power Authority, Power Revenue Bonds:
A-       Aaa          1,000     Series P, 7% due 7/01/2001 (h)                                                     1,124
AAA      Aaa            400     Series T, Registered, STRIPES, 7.924% due 7/01/2005 (c)(d)                           433

Total Investments (Cost--$25,056)--98.9%                                                                          25,894

Other Assets Less Liabilities--1.1%                                                                                  287
                                                                                                                 -------
Net Assets--100.0%                                                                                               $26,181
                                                                                                                 =======
<FN>
(a)FGIC Insured.
(b)AMBAC Insured.
(c)FSA Insured.
(d)The interest rate is subject to change periodically and inversely
   based upon prevailing market rates. The interest rates shown are
   those in effect at July 31, 1996.
(e)SLMA Insured.
(f)GNMA Insured.
(g)FNMA/GNMA Insured.
(h)Prerefunded.
(i)The interest rate is subject to change periodically based upon
   prevailing market rates. The interest rates shown are those in
   effect at July 31,1996.
  *Not Rated.
 ++Highest short-term rating by Moody's Investors Service, Inc.
   Ratings of issues shown have not been audited by Deloitte & Touche
   LLP.

   See Notes to Financial Statements.
</TABLE>


                                       56
<PAGE>   107

Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


FINANCIAL INFORMATION

<TABLE>
Statement of Assets and Liabilities as of July 31, 1996
<CAPTION>
<S>                 <S>                                                                    <C>              <C>
Assets:             Investments, at value (identified cost--$25,055,797) (Note 1a)                          $ 25,894,249
                    Cash                                                                                          76,445
                    Receivables:
                      Interest                                                             $    275,380
                      Beneficial interest sold                                                   48,934
                      Investment adviser (Note 2)                                                40,850
                      Securities sold                                                            10,272          375,436
                                                                                           ------------
                    Deferred organization expenses (Note 1e)                                                      35,892
                    Prepaid expenses (Note 1e)                                                                     7,361
                                                                                                            ------------
                    Total assets                                                                              26,389,383
                                                                                                            ------------
Liabilities:        Payables:
                      Beneficial interest redeemed                                               95,903
                      Dividends to shareholders (Note 1f)                                        27,755
                      Distributor (Note 2)                                                       10,444          134,102
                                                                                           ------------
                    Accrued expenses                                                                              74,000
                                                                                                            ------------
                    Total liabilities                                                                            208,102
                                                                                                            ------------

Net Assets:         Net assets                                                                              $ 26,181,281
                                                                                                            ============

Net Assets          Class A Shares of beneficial interest, $.10 par value,
Consist of:         unlimited number of shares authorized                                                   $     13,594
                    Class B Shares of beneficial interest, $.10 par value,
                    unlimited number of shares authorized                                                        239,389
                    Class C Shares of beneficial interest, $.10 par value,
                    unlimited number of shares authorized                                                         24,191
                    Class D Shares of beneficial interest, $.10 par value,
                    unlimited number of shares authorized                                                          7,022
                    Paid-in capital in excess of par                                                          27,036,636
                    Accumulated realized capital losses on investments--net (Note 5)                          (1,978,003)
                    Unrealized appreciation on investments--net                                                  838,452
                                                                                                            ------------
                    Net assets                                                                              $ 26,181,281
                                                                                                            ============

Net Asset Value:    Class A--Based on net assets of $1,252,086 and 135,943 shares
                    of beneficial interest outstanding                                                      $       9.21
                                                                                                            ============
                    Class B--Based on net assets of $22,053,197 and 2,393,887 shares
                    of beneficial interest outstanding                                                      $       9.21
                                                                                                            ============
                    Class C--Based on net assets of $2,229,384 and 241,914 shares
                    of beneficial interest outstanding                                                      $       9.22
                                                                                                            ============
                    Class D--Based on net assets of $646,614 and 70,216 shares
                    of beneficial interest outstanding                                                      $       9.21
                                                                                                            ============

                    See Notes to Financial Statements.
</TABLE>



                                       57
<PAGE>   108

Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


FINANCIAL INFORMATION (continued)
<TABLE>
Statement of Operations
<CAPTION>
                                                                                                      For the Year Ended
                                                                                                           July 31, 1996
<S>                 <S>                                                                    <C>              <C>
Investment Income   Interest and amortization of premium and discount earned                                $  1,318,438
(Note 1d):

Expenses:           Investment advisory fees (Note 2)                                      $    133,974
                    Account maintenance and distribution fees--Class B (Note 2)                 104,504
                    Professional fees                                                            54,221
                    Accounting services (Note 2)                                                 42,113
                    Printing and shareholder reports                                             34,215
                    Transfer agent fees--Class B (Note 2)                                        17,174
                    Amortization of organization expenses (Note 1e)                              16,059
                    Account maintenance and distribution fees--Class C (Note 2)                   9,357
                    Pricing fees                                                                  5,529
                    Custodian fees                                                                2,411
                    Trustees' fees and expenses                                                   2,177
                    Transfer agent fees--Class C (Note 2)                                         1,403
                    Transfer agent fees--Class A (Note 2)                                           881
                    Account maintenance fees--Class D (Note 2)                                      624
                    Transfer agent fees--Class D (Note 2)                                           432
                    Other                                                                           185
                                                                                           ------------
                    Total expenses before reimbursement                                         425,259
                    Reimbursement of expenses (Note 2)                                         (217,040)
                                                                                           ------------
                    Total expenses after reimbursement                                                           208,219
                                                                                                            ------------
                    Investment income--net                                                                     1,110,219
                                                                                                            ------------

Realized &          Realized loss on investments--net                                                           (347,221)
Unrealized          Change in unrealized appreciation on investments--net                                        423,676
Gain (Loss) on                                                                                              ------------
Investments--Net    Net Increase in Net Assets Resulting from Operations                                    $  1,186,674
(Notes 1b, 1d & 3):                                                                                         ============

                    See Notes to Financial Statements.
</TABLE>



                                       58
<PAGE>   109
Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996



FINANCIAL INFORMATION (continued)

<TABLE>
Statements of Changes in Net Assets
<CAPTION>
                                                                                            For the Year Ended July 31,
Increase (Decrease) in Net Assets:                                                            1996              1995
<S>                 <S>                                                                    <C>              <C>
Operations:         Investment income--net                                                 $  1,110,219     $    957,392
                    Realized loss on investments--net                                          (347,221)      (1,600,414)
                    Change in unrealized appreciation on investments--net                       423,676        1,578,565
                                                                                           ------------     ------------
                    Net increase in net assets resulting from operations                      1,186,674          935,543
                                                                                           ------------     ------------

Dividends to        Investment income--net:
Shareholders          Class A                                                                   (64,371)         (88,115)
(Note 1f):            Class B                                                                  (946,432)        (847,823)
                      Class C                                                                   (68,646)         (13,425)
                      Class D                                                                   (30,770)          (8,029)
                                                                                           ------------     ------------
                    Net decrease in net assets resulting from dividends to
                    shareholders                                                             (1,110,219)        (957,392)
                                                                                           ------------     ------------

Beneficial Interest Net increase in net assets derived from beneficial interest
Transactions        transactions                                                              4,841,350        5,212,416
(Note 4):                                                                                  ------------     ------------


Net Assets:         Total increase in net assets                                              4,917,805        5,190,567
                    Beginning of year                                                        21,263,476       16,072,909
                                                                                           ------------     ------------
                    End of year                                                            $ 26,181,281     $ 21,263,476
                                                                                           ============     ============

                    See Notes to Financial Statements.
</TABLE>



                                       59
<PAGE>   110

Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


FINANCIAL INFORMATION (continued)

<TABLE>
Financial Highlights
<CAPTION>
                                                                                               Class A

                                                                                                                For the
                                                                                                                Period
The following per share data and ratios have been derived                                                       Oct. 29,
from information provided in the financial statements.                             For the Year Ended          1993++ to
                                                                                         July 31,               July 31,
Increase (Decrease) in Net Asset Value:                                            1996           1995            1994
<S>                 <S>                                                          <C>            <C>             <C>
Per Share           Net asset value, beginning of period                         $   9.15       $   9.20        $  10.00
Operating                                                                        --------       --------        --------
Performance:        Investment income--net                                            .47            .52             .37
                    Realized and unrealized gain (loss) on investments
                    --net                                                             .06           (.05)           (.80)
                                                                                 --------       --------        --------
                    Total from investment operations                                  .53            .47            (.43)
                                                                                 --------       --------        --------
                    Less dividends from investment income--net                       (.47)          (.52)           (.37)
                                                                                 --------       --------        --------
                    Net asset value, end of period                               $   9.21       $   9.15        $   9.20
                                                                                 ========       ========        ========
Total Investment    Based on net asset value per share                              5.85%          5.39%          (4.32%)+++
Return:**                                                                        ========       ========        ========

Ratios to           Expenses, net of reimbursement                                   .37%           .13%            .03%*
Average                                                                          ========       ========        ========
Net Assets:         Expenses                                                        1.26%          1.57%           1.76%*
                                                                                 ========       ========        ========
                    Investment income--net                                          5.04%          5.80%           5.30%*
                                                                                 ========       ========        ========

Supplemental        Net assets, end of period (in thousands)                     $  1,252       $  1,362        $  1,589
Data:                                                                            ========       ========        ========
                    Portfolio turnover                                             81.87%         73.99%          29.40%
                                                                                 ========       ========        ========


                 <FN>
                   *Annualized.
                  **Total investment returns exclude the effects of sales loads.
                  ++Commencement of Operations.
                 +++Aggregate total investment return.

                    See Notes to Financial Statements.
</TABLE>



                                       60
<PAGE>   111


Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


FINANCIAL INFORMATION (continued)

<TABLE>
Financial Highlights (continued)
<CAPTION>
                                                                                                 Class B

                                                                                                                For the
                                                                                                                 Period
The following per share data and ratios have been derived                                                       Oct. 29,
from information provided in the financial statements.                              For the Year Ended         1993++ to
                                                                                         July 31,                July 31,
Increase (Decrease) in Net Asset Value:                                            1996            1995           1994
<S>                 <S>                                                          <C>            <C>             <C>
Per Share           Net asset value, beginning of period                         $   9.16       $   9.20        $  10.00
Operating                                                                        --------       --------        --------
Performance:        Investment income--net                                            .42            .47             .33
                    Realized and unrealized gain (loss) on
                    investments --net                                                 .05           (.04)           (.80)
                                                                                 --------       --------        --------
                    Total from investment operations                                  .47            .43            (.47)
                                                                                 --------       --------        --------
                    Less dividends from investment income--net                       (.42)          (.47)           (.33)
                                                                                 --------       --------        --------
                    Net asset value, end of period                               $   9.21       $   9.16        $   9.20
                                                                                 ========       ========        ========
Total Investment    Based on net asset value per share                              5.19%          4.96%          (4.68%)+++
Return:**                                                                        ========       ========        ========

Ratios to           Expenses, net of reimbursement                                   .88%           .65%            .53%*
Average                                                                          ========       ========        ========
Net Assets:         Expenses                                                        1.77%          2.08%           2.27%*
                                                                                 ========       ========        ========
                    Investment income--net                                          4.52%          5.29%           4.74%*
                                                                                 ========       ========        ========

Supplemental        Net assets, end of period (in thousands)                     $ 22,053       $ 18,371        $ 14,484
Data:                                                                            ========       ========        ========
                    Portfolio turnover                                             81.87%         73.99%          29.40%
                                                                                 ========       ========        ========


                 <FN>
                   *Annualized.
                  **Total investment returns exclude the effects of sales loads.
                  ++Commencement of Operations.
                 +++Aggregate total investment return.

                    See Notes to Financial Statements.
</TABLE>



                                       61

<PAGE>   112

Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


FINANCIAL INFORMATION (concluded)

<TABLE>
Financial Highlights (concluded)
<CAPTION>
                                                                                    Class C                Class D
                                                                                         For the                For the
                                                                              For the    Period      For the    Period
The following per share data and ratios have been derived                       Year     Oct. 21,      Year     Oct. 21,
from information provided in the financial statements.                         Ended    1994++ to     Ended    1994++ to
                                                                              July 31,   July 31,    July 31,   July 31,
Increase (Decrease) in Net Asset Value:                                         1996       1995        1996       1995
<S>                 <S>                                                       <C>        <C>         <C>        <C>
Per Share           Net asset value, beginning of period                      $   9.16   $   8.79    $   9.16   $   8.79
Operating                                                                     --------   --------    --------   --------
Performance:        Investment income--net                                         .41        .36         .46        .40
                    Realized and unrealized gain on investments--net               .06        .37         .05        .37
                                                                              --------   --------    --------   --------
                    Total from investment operations                               .47        .73         .51        .77
                                                                              --------   --------    --------   --------
                    Less dividends from investment income--net                    (.41)      (.36)       (.46)      (.40)
                                                                              --------   --------    --------   --------
                    Net asset value, end of period                            $   9.22   $   9.16    $   9.21   $   9.16
                                                                              ========   ========    ========   ========

Total Investment    Based on net asset value per share                           5.18%      8.51%+++    5.63%      8.94%+++
Return:**                                                                     ========   ========    ========   ========

Ratios to           Expenses, net of reimbursement                               1.00%       .82%*       .47%       .31%*
Average                                                                       ========   ========    ========   ========
Net Assets:         Expenses                                                     1.88%      2.08%*      1.36%      1.55%*
                                                                              ========   ========    ========   ========
                    Investment income--net                                       4.39%      5.08%*      4.91%      5.57%*
                                                                              ========   ========    ========   ========

Supplemental        Net assets, end of period (in thousands)                  $  2,229   $  1,013    $    647   $    517
Data:                                                                         ========   ========    ========   ========
                    Portfolio turnover                                          81.87%     73.99%      81.87%     73.99%
                                                                              ========   ========    ========   ========


                 <FN>
                   *Annualized.
                  **Total investment returns exclude the effects of sales loads.
                  ++Commencement of Operations.
                 +++Aggregate total investment return.

                    See Notes to Financial Statements.
</TABLE>



                                       62
<PAGE>   113

Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


NOTES TO FINANCIAL STATEMENTS

1. Significant Accounting Policies:
Merrill Lynch Maryland Municipal Bond Fund (the "Fund") is part of
Merrill Lynch Multi-State Municipal Series Trust (the "Trust"). The
Fund is registered under the Investment Company Act of 1940 as a non-
diversified, open-end management investment company. The Fund offers
four classes of shares under the Merrill Lynch Select Pricing SM
System. Shares of Class A and Class D are sold with a front-end
sales charge. Shares of Class B and Class C may be subject to a
contingent deferred sales charge. All classes of shares have
identical voting, dividend, liquidation and other rights and the
same terms and conditions, except that Class B, Class C and Class D
Shares bear certain expenses related to the account maintenance of
such shares, and Class B and Class C Shares also bear certain
expenses related to the distribution of such shares. Each class has
exclusive voting rights with respect to matters relating to its
account maintenance and distribution expenditures. The following is
a summary of significant accounting policies followed by the Fund.

(a) Valuation of investments--Municipal bonds and other portfolio
securities in which the Fund invests are traded primarily in the
over-the-counter municipal bond and money markets and are valued at
the last available bid price in the over-the-counter market or on
the basis of yield equivalents as obtained from one or more dealers
that make markets in the securities. Financial futures contracts and
options thereon, which are traded on exchanges, are valued at their
settlement prices as of the close of such exchanges. Short-term
investments with remaining maturities of sixty days or less are
valued at amortized cost, which approximates market value.
Securities and assets for which market quotations are not readily
available are valued at fair value as determined in good faith by or
under the direction of the Board of Trustees of the Trust, including
valuations furnished by a pricing service retained by the Trust,
which may utilize a matrix system for valuations. The procedures of
the pricing service and its valuations are reviewed by the officers
of the Trust under the general supervision of the Trustees.

(b) Derivative financial instruments--The Fund may engage in various
portfolio strategies to seek to increase its return by hedging its
portfolio against adverse movements in the debt markets. Losses may
arise due to changes in the value of the contract or if the
counterparty does not perform under the contract.

* Financial futures contracts--The Fund may purchase or sell interest
rate futures contracts and options on such futures contracts for the
purpose of hedging the market risk on existing securities or the
intended purchase of securities. Futures contracts are contracts for
delayed delivery of securities at a specific future date and at a
specific price or yield. Upon entering into a contract, the Fund
deposits and maintains as collateral such initial margin as required
by the exchange on which the transaction is effected. Pursuant to
the contract, the Fund agrees to receive from or pay to the broker
an amount of cash equal to the daily fluctuation in value of the
contract. Such receipts or payments are known as variation margin
and are recorded by the Fund as unrealized gains or losses. When the
contract is closed, the Fund records a realized gain or loss equal
to the difference between the value of the contract at the time it
was opened and the value at the time it was closed.

(c) Income taxes--It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated
investment companies and to distribute substantially all of its
taxable income to its shareholders. Therefore, no Federal income tax
provision is required.

(d) Security transactions and investment income--Security
transactions are recorded on the dates the transactions are entered
into (the trade dates). Interest income is recognized on the accrual
basis.



                                       63
<PAGE>   114

Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


Discounts and market premiums are amortized into interest
income. Realized gains and losses on security transactions are
determined on the identified cost basis.

(e) Deferred organization expenses and prepaid registration fees--
Deferred organization expenses are charged to expense on a straight-
line basis over a five-year period. Prepaid registration fees are
charged to expense as the related shares are issued.

(f) Dividends and distributions--Dividends from net investment
income are declared daily and paid monthly. Distributions of capital
gains are recorded on the ex-dividend dates.

2. Investment Advisory Agreement and
Transactions with Affiliates:
The Fund has entered into an Investment Advisory Agreement with Fund
Asset Management, L.P. ("FAM"). The general partner of FAM is
Princeton Services, Inc. ("PSI"), an indirect wholly-owned
subsidiary of Merrill Lynch & Co., Inc. ("ML & Co."), which is the
limited partner. The Fund has also entered into a Distribution
Agreement and Distribution Plans with Merrill Lynch Funds
Distributor, Inc. ("MLFD" or "Distributor"), a wholly-owned
subsidiary of Merrill Lynch Group, Inc.

FAM is responsible for the management of the Fund's portfolio and
provides the necessary personnel, facilities, equipment and certain
other services necessary to the operations of the Fund. For such
services, the Fund pays a monthly fee based upon the average daily
value of the Fund's net assets at the following annual rates: 0.55%
of the Fund's average daily net assets not exceeding $500 million;
0.525% of average daily net assets in excess of $500 million but not
exceeding $1 billion; and 0.50% of average daily net assets in
excess of $1 billion. For the year ended July 31, 1996, FAM earned
fees of $133,974, all of which was voluntarily waived. FAM also
reimbursed the Fund additional expenses of $83,066.

Pursuant to the distribution plans (the "Distribution Plans")
adopted by the Fund in accordance with Rule 12b-1 under the
Investment Company Act of 1940, the Fund pays the Distributor
ongoing account maintenance and distribution fees. The fees are
accrued daily and paid monthly at annual rates based upon the
average daily net assets of the shares as follows:

                                           Account     Distribution
                                        Maintenance Fee     Fee

Class B                                     0.25%          0.25%
Class C                                     0.25%          0.35%
Class D                                     0.10%           --

Pursuant to a sub-agreement with the Distributor, Merrill Lynch,
Pierce, Fenner & Smith Inc. ("MLPF&S"), a subsidiary of ML & Co.,
also provides account maintenance and distribution services to the
Fund. The ongoing account maintenance fee compensates the
Distributor and MLPF&S for providing account maintenance services to
Class B, Class C and Class D shareholders. The ongoing distribution
fee compensates the Distributor and MLPF&S for providing shareholder
and distribution-related services to Class B and Class C
shareholders.

For the year ended July 31, 1996, MLFD earned underwriting discounts
and MLPF&S earned dealer concessions on sales of the Fund's Class A
and Class D Shares as follows:


                                         MLFD         MLPF&S

Class A                                  $168         $2,445
Class D                                  $598         $5,674

For the year ended July 31, 1996, MLPF&S received contingent
deferred sales charges of $91,447 and $530 relating to transactions
in Class B and Class C Shares, respectively.

Merrill Lynch Financial Data Services, Inc. ("MLFDS"), a wholly-
owned subsidiary of ML & Co., is the Fund's transfer agent.




                                       64
<PAGE>   115

Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


NOTES TO FINANCIAL STATEMENTS (concluded)


Accounting services are provided to the Fund by FAM at cost.

Certain officers and/or trustees of the Fund are officers and/or
directors of FAM, PSI, MLPF&S, MLFDS, MLFD, and/or ML & Co.

3. Investments:
Purchases and sales of investments, excluding short-term securities,
for the year ended July 31, 1996 were $21,483,033 and $18,774,465,
respectively.

Net realized and unrealized gains (losses) as of July 31, 1996 were
as follows:


                                     Realized     Unrealized
                                      Losses        Gains

Long-term investments            $   (248,266)  $    838,452
Short-term investments                   (166)        --
Financial futures contracts           (98,789)        --
                                 ------------   ------------
Total                            $   (347,221)  $    838,452
                                 ============   ============

As of July 31, 1996, net unrealized appreciation for Federal income
tax purposes aggregated $838,452, of which $885,593 related to
appreciated securities and $47,141 related to depreciated
securities. The aggregate cost of investments at July 31, 1996 for
Federal income tax purposes was $25,055,797.

4. Beneficial Interest Transactions:
Net increase in net assets derived from beneficial interest
transactions was $4,841,350 and $5,212,416 for the years ended July
31, 1996 and July 31, 1995, respectively.

Transactions in shares of beneficial interest for each class were as
follows:


Class A Shares for the Year                         Dollar
Ended July 31, 1996                   Shares        Amount

Shares sold                            35,220   $    327,383
Shares issued to share-
holders in reinvestment
of dividends                            4,930         45,725
                                 ------------   ------------
Total issued                           40,150        373,108
Shares redeemed                       (53,019)      (492,616)
                                 ------------   ------------
Net decrease                          (12,869)  $   (119,508)
                                 ============   ============


Class A Shares for
the Year Ended                                      Dollar
July 31, 1995                         Shares        Amount

Shares sold                            42,092   $    376,856
Shares issued to share-
holders in reinvestment
of dividends                            6,413         57,046
                                 ------------   ------------
Total issued                           48,505        433,902
Shares redeemed                       (72,388)      (638,705)
                                 ------------   ------------
Net decrease                          (23,883)  $   (204,803)
                                 ============   ============


Class B Shares for
the Year Ended                                      Dollar
July 31, 1996                         Shares        Amount

Shares sold                           813,901   $  7,573,305
Shares issued to share-
holders in reinvestment
of dividends                           52,676        488,754
                                 ------------   ------------
Total issued                          866,577      8,062,059
Shares redeemed                      (476,011)    (4,423,212)
Automatic conversion of shares         (2,990)       (27,266)
                                 ------------   ------------
Net increase                          387,576   $  3,611,581
                                 ============   ============


Class B Shares for
the Year Ended                                     Dollar
July 31, 1995                         Shares        Amount

Shares sold                           835,712   $  7,482,027
Shares issued to share-
holders in reinvestment
of dividends                           46,080        410,971
                                 ------------   ------------
Total issued                          881,792      7,892,998
Shares redeemed                      (449,753)    (3,996,258)
                                 ------------   ------------
Net increase                          432,039   $  3,896,740
                                 ============   ============


Class C Shares for
the Year Ended                                      Dollar
July 31, 1996                         Shares        Amount

Shares sold                           156,426   $  1,445,652
Shares issued to share-
holders in reinvestment
of dividends                            4,723         43,828
                                 ------------   ------------
Total issued                          161,149      1,489,480
Shares redeemed                       (29,798)      (271,440)
                                 ------------   ------------
Net increase                          131,351   $  1,218,040
                                 ============   ============




                                       65
<PAGE>   116

Merrill Lynch Maryland Municipal Bond Fund                       July 31, 1996


Class C Shares
for the Period
October 21, 1994++                                  Dollar
to July 31, 1995                      Shares        Amount

Shares sold                           123,204   $  1,119,811
Shares issued to share-
holders in reinvestment
of dividends                              965          8,788
                                 ------------   ------------
Total issued                          124,169      1,128,599
Shares redeemed                       (13,606)      (123,782)
                                 ------------   ------------
Net increase                          110,563   $  1,004,817
                                 ============   ============

[FN]
++Commencement of Operations.


Class D Shares for
the Year Ended                                      Dollar
July 31, 1996                         Shares        Amount

Shares sold                            30,212   $    282,355
Automatic conversion
of shares                               2,993         27,266
Shares issued to share-
holders in reinvestment
of dividends                            1,971         18,290
                                 ------------   ------------
Total issued                           35,176        327,911
Shares redeemed                       (21,460)      (196,674)
                                 ------------   ------------
Net increase                           13,716   $    131,237
                                 ============   ============


Class D Shares
for the Period
October 21, 1994++                                  Dollar
to July 31, 1995                      Shares        Amount

Shares sold                            56,794   $    518,419
Shares issued to share-
holders in reinvestment
of dividends                              586          5,352
                                 ------------   ------------
Total issued                           57,380        523,771
Shares redeemed                          (880)        (8,109)
                                 ------------   ------------
Net increase                           56,500   $    515,662
                                 ============   ============

[FN]
++Commencement of Operations.

5. Capital Loss Carryforward:
At July 31, 1996, the Fund had a net capital loss carryforward of
approximately $1,677,000, of which $899,000 expires in 2003 and
$778,000 expires in 2004. This amount will be available to offset
like amounts of any future taxable gains.



                                       66
<PAGE>   117
 
                TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                PAGE
                                                ----
<S>                                             <C>
Investment Objective and Policies............     2
Description of Municipal Bonds and Temporary
  Investments................................     5
  Description of Municipal Bonds.............     5
  Description of Temporary Investments.......     7
  Repurchase Agreements......................     8
  Financial Futures Transactions and
    Options..................................     9
Investment Restrictions......................    13
Management of the Trust......................    16
  Trustees and Officers......................    16
  Compensation of Trustees...................    17
  Management and Advisory Arrangements.......    18
Purchase of Shares...........................    19
  Initial Sales Charge Alternatives--Class A
    and Class D Shares.......................    20
  Reduced Initial Sales Charges..............    21
  Distribution Plans.........................    24
  Limitations on the Payment of Deferred
    Sales Charges............................    24
Redemption of Shares.........................    26
  Deferred Sales Charges--Class B and Class C
    Shares...................................    26
Portfolio Transactions.......................    26
Determination of Net Asset Value.............    28
Shareholder Services.........................    28
  Investment Account.........................    28
  Automatic Investment Plans.................    29
  Automatic Reinvestment of Dividends and
    Capital Gains Distributions..............    29
  Systematic Withdrawal Plans--Class A and
    Class D Shares...........................    30
  Exchange Privilege.........................    31
Distributions and Taxes......................    33
  Environmental Tax..........................    36
  Tax Treatment of Option and Futures
    Transactions.............................    36
Performance Data.............................    37
General Information..........................    39
  Description of Shares......................    39
  Computation of Offering Price Per Share....    40
  Independent Auditors.......................    40
  Custodian..................................    41
  Transfer Agent.............................    41
  Legal Counsel..............................    41
  Reports to Shareholders....................    41
  Additional Information.....................    41
Appendix I--Economic Conditions in
  Maryland...................................    42
Appendix II--Ratings of Municipal Bonds......    46
Independent Auditors' Report.................    54
Financial Statements.........................    55
                                   Code # 16860-1096
</TABLE>
    
 
         [MERRILL LYNCH LOGO]
         Merrill Lynch
         Maryland Municipal
         Bond Fund

         Merrill Lynch Multi-State
         Municipal Series Trust
                                                                  Mlynch Compass
         STATEMENT OF
         ADDITIONAL
         INFORMATION
   
         October 29, 1996
    
         Distributor:
         Merrill Lynch                                                     
         Funds Distributor, Inc.
<PAGE>   118
                   APPENDIX FOR GRAPHIC AND IMAGE MATERIAL


        Pursuant to Rule 304 of Regulation S-T, the following table presents
fair and accurate narrative descriptions of graphic and image material omitted
from this EDGAR Submission File due to ASCII-incompatibility and
cross-references this material to the location of each occurrence in the text.


<TABLE>
<CAPTION>
DESCRIPTION OF OMITTED                              LOCATION OF GRAPHIC
  GRAPHIC OR IMAGE                                    OR IMAGE IN TEXT
- ----------------------                              -------------------
<S>                                                 <C>
Compass plate, circular                             Back cover of Prospectus and
graph paper and Merrill Lynch                       back cover of Statement of
logo including stylized market                      Additional Information
bull.
</TABLE>

<PAGE>   119
 
                           PART C.  OTHER INFORMATION
 
ITEM 24. FINANCIAL STATEMENTS AND EXHIBITS.
 
     (a) FINANCIAL STATEMENTS
 
        Contained in Part A:
   
                Financial Highlights for each of the years in the two-year
           period ended July 31, 1996 and for the period October 29, 1993
           (commencement of operations) to July 31, 1994.
    
 
        Contained in Part B:
   
                Schedule of Investments as of July 31, 1996.
    
   
                Statement of Assets and Liabilities as of July 31, 1996.
    
   
                Statement of Operations for the year ended July 31, 1996.
    
   
                Statements of Changes in Net Assets for each of the years in the
           two-year period ended July 31, 1996.
    
   
                Financial Highlights for each of the years in the two-year
           period ended July 31, 1996 and for the period October 29, 1993
           (commencement of operations) to July 31, 1994.
    
 
     (b) EXHIBITS
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER
- ------
   
<S>     <C>  <C>
  1(a)   --  Declaration of Trust of the Registrant, dated August 2, 1985.(a)
   (b)   --  Amendment to Declaration of Trust, dated September 18, 1987.(a)
   (c)   --  Amendment to Declaration of Trust, dated December 21, 1987.(a)
   (d)   --  Amendment to Declaration of Trust, dated October 3, 1988.(a)
   (e)   --  Amendment to Declaration of Trust, dated October 17, 1994 and instrument
             establishing Class C and Class D shares of beneficial interest.(a)
   (f)   --  Instrument establishing Merrill Lynch Maryland Municipal Bond Fund (the "Fund") as
             a series of Registrant.(d)
   (g)   --  Instrument establishing Class A and Class B shares of beneficial interest of the
             Fund.(e)
  2      --  By-Laws of Registrant.(a)
  3      --  None.
  4      --  Portions of the Declaration of Trust, Establishment and Designation and By-Laws of
             the Registrant defining the rights of holders of the Fund as a series of the
             Registrant.(b)
  5(a)   --  Form of Management Agreement between Registrant and Fund Asset Management, L.P.(a)
   (b)   --  Supplement to Management Agreement between Registrant and Fund Asset Management,
             L.P.(f)
  6(a)   --  Form of Revised Class A Shares Distribution Agreement between Registrant and
             Merrill Lynch Funds Distributor, Inc. (including Form of Selected Dealers
             Agreement).(f)
   (b)   --  Form of Class B Shares Distribution Agreement between Registrant and Merrill Lynch
             Funds Distributor, Inc.(a)
   (c)   --  Form of Class C Shares Distribution Agreement between Registrant and Merrill Lynch
             Funds Distributor, Inc. (including Form of Selected Dealers Agreement).(f)
   (d)   --  Form of Class D Shares Distribution Agreement between Registrant and Merrill Lynch
             Funds Distributor, Inc. (including Form of Selected Dealers Agreement).(f)
   (e)   --  Letter Agreement between the Fund and Merrill Lynch Funds Distributor, Inc., dated
             September 15, 1993, in connection with the Merrill Lynch Mutual Fund Adviser
             program.(e)
  7      --  None.
  8      --  Form of Custody Agreement between Registrant and State Street Bank & Trust
             Company.(g)
  9      --  Amended Transfer Agency, Dividend Disbursing Agency and Shareholder Servicing
             Agency Agreement between Registrant and Merrill Lynch Financial Data Services, Inc.
             (formerly Financial Data Services, Inc.)(c)
 10      --  None.
 11      --  Consent of Deloitte & Touche LLP, independent auditors for the Registrant.
 12      --  None.
</TABLE>
    
 
                                       C-1
<PAGE>   120
 
   
<TABLE>
<CAPTION>
EXHIBIT
NUMBER
- ------
<C>     <C>  <S>
 13      --  Certificate of Fund Asset Management, L.P.(d)
 14      --  None.
 15(a)   --  Class B Shares Distribution Plan and Class B shares Distribution Plan Sub-Agreement
             of the Registrant.(c)
   (b)   --  Form of Class C Shares Distribution Plan and Class C shares Distribution Plan
             Sub-Agreement of the Registrant.(f)
   (c)   --  Form of Class D Shares Distribution Plan and Class D shares Distribution Plan
             Sub-Agreement of the Registrant.(f)
 16(a)   --  Schedule for computation of each performance quotation provided in the Registration
             Statement in response to Item 22 relating to Class A shares.(e)
   (b)   --  Schedule for computation of each performance quotation provided in the Registration
             Statement in response to Item 22 relating to Class B shares.(e)
   (c)   --  Schedule for computation of each performance quotation provided in the Registration
             Statement in response to Item 22 relating to Class C shares.(a)
   (d)   --  Schedule for computation of each performance quotation provided in the Registration
             Statement in response to Item 22 relating to Class D shares.(a)
 17(a)   --  Financial Data Schedule for Class A shares.
   (b)   --  Financial Data Schedule for Class B shares.
   (c)   --  Financial Data Schedule for Class C shares.
   (d)   --  Financial Data Schedule for Class D shares.
 18      --  Merrill Lynch Select Pricing(SM) System Plan pursuant to Rule 18f-3.(h)
</TABLE>
    
 
- ---------------
   
(a) Filed on October 24, 1995 as an Exhibit to Post-Effective Amendment No. 3 to
    Registrant's Registration Statement on Form N-1A under the Securities Act of
    1933 as amended (File No. 33-49873) (the "Registration Statement").
    
 
   
(b) Reference is made to Article II, Section 2.3 and Articles V, VI, VIII, IX, X
    and XI of the Registrant's Declaration of Trust, as amended, filed as
    Exhibits 1(a), 1(b), 1(c), 1(d) and 1(e) with Post-Effective Amendment No. 3
    to the Registration Statement; to the Certificates of Establishment and
    Designation establishing the Fund as a series of the Registrant and
    establishing Class A and Class B shares of beneficial interest of the Fund,
    filed as Exhibits 1(f) and 1(g), respectively, with Post-Effective Amendment
    No. 3 to the Registration Statement; and to Articles I, V and VI of the
    Registrant's By-Laws, filed as Exhibit 2 with Post-Effective Amendment No. 3
    to the Registration Statement.
    
 
   
(c) Filed on July 30, 1993 as an Exhibit to the Registration Statement.
    
 
   
(d) Filed on September 3, 1993 as an Exhibit to Pre-Effective Amendment No. 1 to
    the Registration Statement.
    
 
   
(e) Filed on February 24, 1994 as an Exhibit to Post-Effective Amendment No. 1
    to the Registration Statement.
    
 
   
(f) Filed on October 14, 1994 as an Exhibit to Post-Effective Amendment No. 2 to
    the Registration Statement.
    
 
   
(g) Incorporated by reference to Exhibit 8 to Post-Effective Amendment No. 3 to
    Registrant's Registration Statement on Form N-1A under the Securities Act of
    1933, as amended, filed on October 14, 1994, relating to shares of the
    Merrill Lynch Minnesota Municipal Bond Fund series of the Registrant (File
    No. 33-44734).
    
 
   
(h) Incorporated by reference to Exhibit 18 to Post-Effective Amendment No. 13
    to Registrant's Registration Statement on Form N-1A under the Securities Act
    of 1933, as amended, filed on January 25, 1996, relating to shares of the
    Merrill Lynch New York Municipal Bond Fund series of the Registrant (File
    No. 2-99473).
    
 
                                       C-2
<PAGE>   121
 
ITEM 25. PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT.
 
     The Registrant is not controlled by or under common control with any
person.
 
ITEM 26. NUMBER OF HOLDERS OF SECURITIES.
 
   
<TABLE>
<CAPTION>
                                                                                   NUMBER OF
                                                                                   HOLDERS AT
                               TITLE OF CLASS                                  SEPTEMBER 30, 1996
- ----------------------------------------------------------------------------   ------------------
<S>                                                                            <C>
Class A shares of beneficial interest, par value $0.10 per share............             56
Class B shares of beneficial interest, par value $0.10 per share............            918
Class C shares of beneficial interest, par value $0.10 per share............            126
Class D shares of beneficial interest, par value $0.10 per share............             30
</TABLE>
    
 
Note: The number of holders shown above includes holders of record plus
beneficial owners, whose shares are held of record by Merrill Lynch, Pierce,
Fenner & Smith Incorporated.
 
ITEM 27. INDEMNIFICATION.
 
     Section 5.3 of the Registrant's Declaration of Trust provides as follows:
 
     "The Trust shall indemnify each of its Trustees, officers, employees and
     agents (including persons who serve at its request as directors, officers
     or trustees of another organization in which it has any interest as a
     shareholder, creditor or otherwise) against all liabilities and expenses
     (including amounts paid in satisfaction of judgments, in compromise, as
     fines and penalties and as counsel fees) reasonably incurred by him in
     connection with the defense or disposition of any action, suit or other
     proceeding, whether civil or criminal, in which he may be involved or with
     which he may be threatened, while in office or thereafter, by reason of his
     being or having been such a trustee, officer, employee or agent, except
     with respect to any matter as to which he shall have been adjudicated to
     have acted in bad faith, willful misfeasance, gross negligence or reckless
     disregard of his duties; provided, however, that as to any matter disposed
     of by a compromise payment by such person, pursuant to a consent decree or
     otherwise, no indemnification either for said payment or for any other
     expenses shall be provided unless the Trust shall have received a written
     opinion from independent legal counsel approved by the Trustees to the
     effect that if either the matter of willful misfeasance, gross negligence
     or reckless disregard of duty, or the matter of good faith and reasonable
     belief as to the best interests of the Trust, had been adjudicated, it
     would have been adjudicated in favor of such person. The rights accruing to
     any Person under these provisions shall not exclude any other right to
     which he may be lawfully entitled; provided that no person may satisfy any
     right in indemnity or reimbursement granted herein or in Section 5.1 or to
     which he may be otherwise entitled except out of the property of the Trust,
     and no Shareholder shall be personally liable to any Person with respect to
     any claim for indemnity or reimbursement or otherwise. The Trustees may
     make advance payments in connection with indemnification under this Section
     5.3, provided that the indemnified person shall have given a written
     undertaking to reimburse the Trust in the event it is subsequently
     determined that he is not entitled to such indemnification."
 
   
     Insofar as the conditional advancing of indemnification monies for actions
based upon the Investment Company Act of 1940, as amended, may be concerned,
such payments will be made only on the following conditions: (i) the advances
must be limited to amounts used, or to be used, for the preparation or
presentation of a defense to the action, including costs connected with the
preparation of a settlement; (ii) advances may be made only upon receipt of a
written promise by, or on behalf of, the recipient to repay that amount of the
advance which exceeds the amount which it is ultimately determined he is
entitled to receive from the Registrant by reason of indemnification; and (iii)
(a) such promise must be secured by a surety bond, other suitable insurance or
an equivalent form of security which assures that any repayments may be obtained
by the Registrant without delay or litigation, which bond, insurance or other
form of security must be provided by the recipient of the advance, or (b) a
majority of a quorum of the Registrant's disinterested,
    
 
                                       C-3
<PAGE>   122
 
non-party Trustees, or an independent legal counsel in a written opinion, shall
determine, based upon a review of readily available facts that the recipient of
the advance ultimately will be found entitled to indemnification.
 
     In Section 9 of the Distribution Agreements relating to the securities
being offered hereby, the Registrant agrees to indemnify the Distributor and
each person, if any, who controls the Distributor within the meaning of the
Securities Act of 1933 (the "1933 Act"), against certain types of civil
liabilities arising in connection with the Registration Statement or Prospectus
and Statement of Additional Information.
 
   
     Insofar as indemnification for liabilities arising under the 1933 Act may
be permitted to Trustees, officers and controlling persons of the Registrant and
the principal underwriter 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
1933 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 and the principal underwriter in connection with the
successful defense of any action, suit or proceeding) is asserted by such
Trustee, officer or controlling person or the principal underwriter in
connection with the shares 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 1933 Act and
will be governed by the final adjudication of such issue.
    
 
ITEM 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER.
 
   
     Fund Asset Management, L.P. (the "Manager" or "FAM") acts as the investment
adviser for the following open-end investment companies: CBA Money Fund, CMA
Government Securities Fund, CMA Money Fund, CMA Multi-State Municipal Series
Trust, CMA Tax-Exempt Fund, CMA Treasury Fund, The Corporate Fund Accumulation
Program, Inc., Financial Institutions Series Trust, Merrill Lynch Basic Value
Fund, Inc., Merrill Lynch California Municipal Series Trust, Merrill Lynch
Corporate Bond Fund, Inc., Merrill Lynch Emerging Tigers Fund, Inc., Merrill
Lynch Federal Securities Trust, Merrill Lynch Funds for Institutions Series,
Merrill Lynch Multi-State Limited Maturity Municipal Series Trust, Merrill Lynch
Multi-State Municipal Series Trust, Merrill Lynch Municipal Bond Fund, Inc.,
Merrill Lynch Phoenix Fund, Inc., Merrill Lynch Special Value Fund, Inc.,
Merrill Lynch World Income Fund, Inc. and The Municipal Fund Accumulation
Program, Inc.; and the following closed-end investment companies: Apex Municipal
Fund, Inc., Corporate High Yield Fund, Inc., Corporate High Yield Fund II, Inc.,
Income Opportunities Fund 1999, Inc., Income Opportunities Fund 2000, Inc.,
Merrill Lynch Municipal Strategy Fund, Inc., MuniAssets Fund, Inc., MuniEnhanced
Fund, Inc., MuniInsured Fund, Inc., MuniVest Fund, Inc., MuniVest Fund II, Inc.,
MuniVest California Insured Fund, Inc., MuniVest Florida Fund, MuniVest Michigan
Insured Fund, Inc., MuniVest New Jersey Fund, Inc., MuniVest New York Insured
Fund, Inc., MuniVest Pennsylvania Insured Fund, MuniYield Arizona Fund, Inc.,
MuniYield California Fund, Inc., MuniYield California Insured Fund, Inc.,
MuniYield California Insured Fund II, Inc., MuniYield Florida Fund, MuniYield
Florida Insured Fund, MuniYield Fund, Inc., MuniYield Insured Fund, Inc.,
MuniYield Insured Fund II, Inc., MuniYield Michigan Fund, Inc., MuniYield
Michigan Insured Fund, Inc., MuniYield New Jersey Fund, Inc., MuniYield New
Jersey Insured Fund, Inc., MuniYield New York Insured Fund, Inc., MuniYield New
York Insured Fund II, Inc., MuniYield New York Insured Fund III, Inc., MuniYield
Pennsylvania Fund, MuniYield Quality Fund, Inc., MuniYield Quality Fund II,
Inc., Senior High Income Portfolio, Inc., Taurus MuniCalifornia Holdings, Inc.,
Taurus MuniNewYork Holdings, Inc. and Worldwide DollarVest Fund, Inc.
    
 
   
     Merrill Lynch Asset Management, L.P. ("MLAM"), an affiliate of the Manager,
acts as the investment adviser for the following open-end investment companies:
Merrill Lynch Adjustable Rate Securities Fund, Inc., Merrill Lynch Americas
Income Fund, Inc., Merrill Lynch Asset Builder Program, Inc., Merrill Lynch
Asset Growth Fund, Inc., Merrill Lynch Asset Income Fund, Inc., Merrill Lynch
Capital Fund, Inc., Merrill Lynch Developing Capital Markets Fund, Inc., Merrill
Lynch Dragon Fund, Inc., Merrill Lynch EuroFund, Merrill Lynch Fundamental
Growth Fund, Inc., Merrill Lynch Fund For Tomorrow, Inc., Merrill Lynch Global
Allocation Fund, Inc., Merrill Lynch Global Bond Fund for Investment and
Retirement, Merrill
    
 
                                       C-4
<PAGE>   123
 
   
Lynch Global Convertible Fund, Inc., Merrill Lynch Global Holdings, Inc.,
Merrill Lynch Global Resources Trust, Merrill Lynch Global SmallCap Fund, Inc.,
Merrill Lynch Global Utility Fund, Inc., Merrill Lynch Global Value Fund, Inc.,
Merrill Lynch Growth Fund, Merrill Lynch Healthcare Fund, Inc., Merrill Lynch
Institutional Intermediate Fund, Merrill Lynch International Equity Fund,
Merrill Lynch Latin America Fund, Inc., Merrill Lynch Middle East/Africa Fund,
Inc., Merrill Lynch Municipal Series Trust, Merrill Lynch Pacific Fund, Inc.,
Merrill Lynch Ready Assets Trust, Merrill Lynch Retirement Series Trust, Merrill
Lynch Series Fund, Inc., Merrill Lynch Short-Term Global Income Fund, Inc.,
Merrill Lynch Strategic Dividend Fund, Merrill Lynch Technology Fund, Inc.,
Merrill Lynch U.S.A. Government Reserves, Merrill Lynch U.S. Treasury Money
Fund, Merrill Lynch Utility Income Fund, Inc. and Merrill Lynch Variable Series
Funds, Inc. and the following closed-end investment companies: Convertible
Holdings, Inc., Merrill Lynch High Income Municipal Bond Fund, Inc. and Merrill
Lynch Senior Floating Rate Fund, Inc.
    
 
   
     The address of each of these investment companies is P.O. Box 9011,
Princeton, New Jersey 08543-9011, except that the address of Merrill Lynch Funds
for Institutions Series and Merrill Lynch Institutional Intermediate Fund is One
Financial Center, 15th Floor, Boston, Massachusetts 02111-2646. The address of
the Manager, MLAM, Princeton Services, Inc. ("Princeton Services") and Princeton
Administrators, L.P. is also P.O. Box 9011, Princeton, New Jersey 08543-9011.
The address of Merrill Lynch Funds Distributor, Inc. ("MLFD") is P.O. Box 9081,
Princeton, New Jersey 08543-9081. The address of Merrill Lynch, Pierce, Fenner &
Smith Incorporated ("Merrill Lynch") and Merrill Lynch & Co., Inc. ("ML&Co.") is
World Financial Center, North Tower, 250 Vesey Street, New York, New York 10281.
The address of the Fund's transfer agent, Merrill Lynch Financial Data Services,
Inc. ("MLFDS"), is 4800 Deer Lake Drive East, Jacksonville, Florida 32246-6484.
    
 
   
     Set forth below is a list of each executive officer and partner of the
Manager indicating each business, profession, vocation or employment of a
substantial nature in which each such person or entity has been engaged since
August 1, 1994 for his or its own account or in the capacity of director,
officer, partner or trustee. In addition, Mr. Zeikel is President, Mr. Glenn is
Executive Vice President and Mr. Richard is Treasurer of substantially all of
the investment companies described in the first two paragraphs of this item and
Messrs. Giordano, Harvey, Hewitt, Kirstein, and Monagle are directors, trustees
or officers of one or more of such companies.
    
 
     Officers and partners of FAM are set forth as follows:
 
   
<TABLE>
<CAPTION>
                                POSITION(S) WITH             OTHER SUBSTANTIAL BUSINESS,
           NAME                    THE MANAGER           PROFESSION, VOCATION OR EMPLOYMENT
- ---------------------------  -----------------------  -----------------------------------------
<S>                          <C>                      <C>
ML&Co. ....................  Limited Partner          Financial Services Holding Company;
                                                      Limited Partner of MLAM
Princeton Services.........  General Partner          General Partner of MLAM
Arthur Zeikel..............  President                President of MLAM; President and Director
                                                      of Princeton Services; Director of MLFD;
                                                      Executive Vice President of ML&Co.
Terry K. Glenn.............  Executive Vice           Executive Vice President of MLAM;
                             President                Executive Vice President and Director of
                                                      Princeton Services; President and
                                                      Director of MLFD; Director of MLFDS;
                                                      President of Princeton Administrators,
                                                      L.P.
Vincent R. Giordano........  Senior Vice President    Senior Vice President of MLAM; Senior
                                                      Vice President of Princeton Services
Elizabeth Griffin..........  Senior Vice President    Senior Vice President of MLAM
Norman R. Harvey...........  Senior Vice President    Senior Vice President of MLAM; Senior
                                                      Vice President of Princeton Services
Michael J. Hennewinkel.....  Senior Vice President    Senior Vice President of MLAM; Senior
                                                      Vice President of Princeton Services
</TABLE>
    
 
                                       C-5
<PAGE>   124
 
   
<TABLE>
<CAPTION>
                                POSITION(S) WITH             OTHER SUBSTANTIAL BUSINESS,
           NAME                    THE MANAGER           PROFESSION, VOCATION OR EMPLOYMENT
- ---------------------------  -----------------------  -----------------------------------------
<S>                          <C>                      <C>
N. John Hewitt.............  Senior Vice President    Senior Vice President of MLAM; Senior
                                                      Vice President of Princeton Services
Philip L. Kirstein.........  Senior Vice President,   Senior Vice President, General Counsel
                               General Counsel and    and Secretary of MLAM; Senior Vice
                               Secretary              President, General Counsel, Secretary and
                                                      Director of Princeton Services; Director
                                                      of MLFD
Ronald M. Kloss............  Senior Vice President    Senior Vice President and Controller of
                               and Controller         MLAM; Senior Vice President and
                                                      Controller of Princeton Services
Stephen M.M. Miller........  Senior Vice President    Executive Vice President of Princeton
                                                      Administrators, L.P.; Senior Vice
                                                      President of Princeton Services
Joseph T. Monagle, Jr. ....  Senior Vice President    Senior Vice President of MLAM; Senior
                                                      Vice President of Princeton Services
Michael L. Quinn ..........  Senior Vice President    Senior Vice President of MLAM; Senior
                                                      Vice President of Princeton Services;
                                                      Managing Director and First Vice
                                                      President of Merrill Lynch from 1989 to
                                                      1995
Richard L. Reller..........  Senior Vice President    Senior Vice President of MLAM; Senior
                                                      Vice President of Princeton Services
Gerald M. Richard..........  Senior Vice President    Senior Vice President and Treasurer of
                               and Treasurer          MLAM; Senior Vice President and Treasurer
                                                      of Princeton Services; Vice President and
                                                      Treasurer of MLFD
Ronald L. Welburn..........  Senior Vice President    Senior Vice President of MLAM; Senior
                                                      Vice President of Princeton Services
Anthony Wiseman............  Senior Vice President    Senior Vice President of MLAM; Senior
                                                      Vice President of Princeton Services
</TABLE>
    
 
ITEM 29. PRINCIPAL UNDERWRITERS.
 
   
     (a) MLFD acts as the principal underwriter for the Registrant and for each
of the open-end investment companies referred to in the first two paragraphs of
Item 28 except CBA Money Fund, CMA Government Securities Fund, CMA Money Fund,
CMA Multi-State Municipal Series Trust, CMA Tax-Exempt Fund, CMA Treasury Fund,
The Corporate Fund Accumulation Program, Inc., and The Municipal Fund
Accumulation Program, Inc. and MLFD also acts as the principal underwriter for
the following closed-end investment companies: Merrill Lynch High Income
Municipal Bond Fund, Inc., Merrill Lynch Municipal Strategy Fund, Inc. and
Merrill Lynch Senior Floating Rate Fund, Inc.
    
 
                                       C-6
<PAGE>   125
 
   
     (b) Set forth below is information concerning each director and officer of
MLFD. The principal business address of each such person is P.O. Box 9011,
Princeton, New Jersey 08543-9011, except that the address of Messrs. Aldrich,
Brady, Breen, Crook, Fatseas and Wasel is One Financial Center, Boston,
Massachusetts 02111-2646.
    
 
   
<TABLE>
<CAPTION>
                                                     (2)                               (3)
               (1)                         POSITION(S) AND OFFICES           POSITION(S) AND OFFICES
              NAME                                WITH MLFD                      WITH REGISTRANT
- ---------------------------------  ---------------------------------------  -------------------------
<S>                                <C>                                      <C>
Terry K. Glenn...................  President and Director                   Executive Vice President
Arthur Zeikel....................  Director                                 President and Trustee
Philip L. Kirstein...............  Director                                 None
William E. Aldrich...............  Senior Vice President                    None
Robert W. Crook..................  Senior Vice President                    None
Kevin P. Boman...................  Vice President                           None
Michael J. Brady.................  Vice President                           None
William M. Breen.................  Vice President                           None
Mark A. DeSario..................  Vice President                           None
James T. Fatseas.................  Vice President                           None
Debra W. Landsman-Yaros..........  Vice President                           None
Michelle T. Lau..................  Vice President                           None
Gerald M. Richard................  Vice President and Treasurer             Treasurer
Salvatore Venezia................  Vice President                           None
William Wasel....................  Vice President                           None
Robert Harris....................  Secretary                                None
</TABLE>
    
 
     (c) Not applicable.
 
ITEM 30. LOCATION OF ACCOUNTS AND RECORDS.
 
   
     All accounts, books and other documents required to be maintained by
Section 31(a) of the Investment Company Act of 1940, as amended, and the rules
thereunder are maintained at the offices of the Registrant, 800 Scudders Mill
Road, Plainsboro, New Jersey 08536, and Merrill Lynch Financial Data Services,
Inc., 4800 Deer Lake Drive East, Jacksonville, Florida 32246-6484.
    
 
ITEM 31. MANAGEMENT SERVICES.
 
     Other than as set forth under the caption "Management of the
Trust-Management and Advisory Arrangements" in the Prospectus constituting Part
A of the Registration Statement and under "Management of the Trust -- Management
and Advisory Arrangements" in the Statement of Additional Information
constituting Part B of the Registration Statement, Registrant is not a party to
any management-related service contract.
 
ITEM 32. UNDERTAKINGS.
 
     (a) Not applicable.
 
     (b) Not applicable.
 
     (c) Registrant undertakes to furnish each person to whom a Prospectus is
delivered with a copy of the Registrant's latest annual report to shareholders,
upon request and without charge.
 
                                       C-7
<PAGE>   126
 
                                   SIGNATURES
 
   
     PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933 AND THE
INVESTMENT COMPANY ACT OF 1940, THE REGISTRANT CERTIFIES THAT IT MEETS ALL OF
THE REQUIREMENTS FOR EFFECTIVENESS OF THIS POST-EFFECTIVE AMENDMENT TO ITS
REGISTRATION STATEMENT PURSUANT TO RULE 485(B) UNDER THE SECURITIES ACT OF 1933
AND HAS DULY CAUSED THIS AMENDMENT TO ITS REGISTRATION STATEMENT TO BE SIGNED ON
ITS BEHALF BY THE UNDERSIGNED, THEREUNTO DULY AUTHORIZED, IN THE TOWNSHIP OF
PLAINSBORO, AND THE STATE OF NEW JERSEY, ON THE 29 DAY OF OCTOBER, 1996.
    
 
                                            Merrill Lynch Multi-State Municipal
                                            Series Trust
                                                        (Registrant)
 
   
                                            By:    /s/  GERALD M. RICHARD
    
                                              ----------------------------------
                                                (Gerald M. Richard, Treasurer)
    
 
   
     PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS
REGISTRATION STATEMENT HAS BEEN SIGNED BELOW BY THE FOLLOWING PERSONS IN THE
CAPACITIES AND ON THE DATE(S) INDICATED.
    
 
   
<TABLE>
<CAPTION>
                  SIGNATURE                                TITLE                    DATE
- ---------------------------------------------    -------------------------    -----------------
<C>                                              <S>                          <C>
                                                 President and Trustee
                ARTHUR ZEIKEL*                    (Principal Executive
- ---------------------------------------------      Officer)
               (Arthur Zeikel)

         /s/  GERALD M. RICHARD                  Treasurer (Principal          October 29, 1996
- ---------------------------------------------      Financial and
             (Gerald M. Richard)                   Accounting Officer)

                                        
             JAMES H. BODURTHA*                  Trustee
- ---------------------------------------------
             (James H. Bodurtha)

                                                
              HERBERT I. LONDON*                 Trustee
- ---------------------------------------------
             (Herbert I. London)

                                        
            ROBERT R. MARTIN*                    Trustee
- ---------------------------------------------
             (Robert R. Martin)
                                        
               JOSEPH L. MAY*                    Trustee
- ---------------------------------------------
               (Joseph L. May)
                                         
               ANDRE F. PEROLD*                  Trustee
- ---------------------------------------------
              (Andre F. Perold)

      *By:   /s/  GERALD M. RICHARD                                            October 29, 1996
- ---------------------------------------------
    (Gerald M. Richard, Attorney-in-Fact)
</TABLE>
    
 
                                       C-8
<PAGE>   127
 
                                 EXHIBIT INDEX
 
   
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                                       DESCRIPTION
- ------       ---------------------------------------------------------------------------
<C>     <C>  <S>                                                                           <C>
 11      --  Consent of Deloitte & Touche LLP, independent auditors for the Registrant.
 17(a)   --  Financial Data Schedule for Class A shares.
   (b)   --  Financial Data Schedule for Class B shares.
   (c)   --  Financial Data Schedule for Class C shares.
   (d)   --  Financial Data Schedule for Class D shares.
</TABLE>
    

<PAGE>   1


                                                      EXHIBIT 11





INDEPENDENT AUDITORS' CONSENT


Merrill Lynch Maryland Municipal Bond Fund of
Merrill Lynch Multi-State Municipal Series Trust:


We consent to the use in Post-Effective Amendment No. 4 to Registration
Statement No. 33-49873 of our report dated September 6, 1996 appearing in the
Statement of Additional Information, which is a part of such Registration
Statement, and to the reference to us under the caption "Financial Highlights"
appearing in the Prospectus, which also is a part of such Registration
Statement.

Deloitte & Touche LLP
Princeton, New Jersey
October 25, 1996
















<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 151
   <NAME> MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          JUL-31-1996
<PERIOD-START>                             AUG-01-1995
<PERIOD-END>                               JUL-31-1996
<INVESTMENTS-AT-COST>                         25055797
<INVESTMENTS-AT-VALUE>                        25894249
<RECEIVABLES>                                   375436
<ASSETS-OTHER>                                  119698
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                23689383
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       208102
<TOTAL-LIABILITIES>                             208102
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                      27320832
<SHARES-COMMON-STOCK>                           135943
<SHARES-COMMON-PRIOR>                           148812
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (1978003)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        838452
<NET-ASSETS>                                   1252086
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                              1318438
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                (208219)
<NET-INVESTMENT-INCOME>                        1110219
<REALIZED-GAINS-CURRENT>                      (347221)
<APPREC-INCREASE-CURRENT>                       423676
<NET-CHANGE-FROM-OPS>                          1186674
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (64371)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          35220
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<EXPENSE-RATIO>                                   1.26
<AVG-DEBT-OUTSTANDING>                               0
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 152
   <NAME> MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          JUL-31-1996
<PERIOD-START>                             AUG-01-1995
<PERIOD-END>                               JUL-31-1996
<INVESTMENTS-AT-COST>                         25055797
<INVESTMENTS-AT-VALUE>                        25894249
<RECEIVABLES>                                   375436
<ASSETS-OTHER>                                  119698
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<TOTAL-ASSETS>                                26389383
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<PAID-IN-CAPITAL-COMMON>                      27320832
<SHARES-COMMON-STOCK>                          2393887
<SHARES-COMMON-PRIOR>                          2006311
<ACCUMULATED-NII-CURRENT>                            0
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<ACCUMULATED-NET-GAINS>                      (1978003)
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<NET-ASSETS>                                  22053197
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                              1318438
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<EXPENSES-NET>                                (208219)
<NET-INVESTMENT-INCOME>                        1110219
<REALIZED-GAINS-CURRENT>                      (347221)
<APPREC-INCREASE-CURRENT>                       423676
<NET-CHANGE-FROM-OPS>                          1186674
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<NUMBER-OF-SHARES-SOLD>                         813901
<NUMBER-OF-SHARES-REDEEMED>                   (479001)
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<NET-CHANGE-IN-ASSETS>                         4917805
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 153
   <NAME> MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          JUL-31-1996
<PERIOD-START>                             AUG-01-1995
<PERIOD-END>                               JUL-31-1996
<INVESTMENTS-AT-COST>                         25055797
<INVESTMENTS-AT-VALUE>                        25894249
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<SHARES-COMMON-PRIOR>                           110563
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<ACCUMULATED-NET-GAINS>                      (1978003)
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<NET-ASSETS>                                   2229384
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<ACCUMULATED-NII-PRIOR>                              0
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 154
   <NAME> MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          JUL-31-1996
<PERIOD-START>                             AUG-01-1995
<PERIOD-END>                               JUL-31-1996
<INVESTMENTS-AT-COST>                         25055797
<INVESTMENTS-AT-VALUE>                        25894249
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<SENIOR-EQUITY>                                      0
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<SHARES-COMMON-STOCK>                            70216
<SHARES-COMMON-PRIOR>                            56500
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (1978003)
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<ACCUM-APPREC-OR-DEPREC>                        838452
<NET-ASSETS>                                    646614
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<EXPENSES-NET>                                (208219)
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<REALIZED-GAINS-CURRENT>                      (347221)
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<DISTRIBUTIONS-OF-INCOME>                      (30770)
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<NUMBER-OF-SHARES-SOLD>                          33205
<NUMBER-OF-SHARES-REDEEMED>                    (21460)
<SHARES-REINVESTED>                               1971
<NET-CHANGE-IN-ASSETS>                         4917805
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    (1630782)
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<PER-SHARE-DIVIDEND>                             (.46)
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<EXPENSE-RATIO>                                   1.36
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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