FORTIS TAX FREE PORTFOLIOS INC
485BPOS, 1997-01-31
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<PAGE>

File No. 2-78148
FISCAL YEAR END - SEPTEMBER 30

Registrant proposes that
this amendment will become
effective:
   60 days after filing       
                           ---
   As of the filing date      
                           ---
   As of February 1, 1997   X 
                           ---
     Pursuant to Rule 485:
   paragraph (a)     
                  ---
   paragraph (b)   X 
                  ---

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE
SECURITIES ACT OF 1933    X 
                         ---

Post-Effective Amendment Number 20

and

REGISTRATION STATEMENT UNDER THE
INVESTMENT COMPANY ACT OF 1940    X 
                                 ---

FORTIS TAX-FREE PORTFOLIOS, INC.
(Exact Name of Registrant as Specified in Charter)

500 Bielenberg Drive, Woodbury, Minnesota  55125
(Address of Principal Executive Offices)

Registrant's Telephone Number:  (612) 738-4000

Scott R. Plummer, Esq., Asst. Secretary (Same address as above)
(Name and Address of Agent for Service)

Copy to:

Michael J. Radmer, Esq.
Dorsey & Whitney LLP
220 Sixth Street South
Minneapolis, MN  55402

Pursuant to Section 270.24f-2 of the Investment Company Act of 1940, the
Registrant has registered an indefinite amount of securities under the
Securities Act of 1933.  The Rule 24f-2 Notice for the Registrant's most recent
fiscal year was filed on November 26, 1996. 
<PAGE>

                        FORTIS TAX-FREE PORTFOLIOS, INC.
                       Registration Statement on Form N-1A
- -------------------------------------------------------------------------------
                              CROSS REFERENCE SHEET
             Pursuant to Rule 495(a) and Instruction F1 of Form N-1A
- -------------------------------------------------------------------------------
N-1A
Item No.
- --------
PART A (PROSPECTUS)                          PROSPECTUS HEADING
- -------------------                          ------------------

1.  Cover Page...............................Cover Page (no caption)
2.  Synopsis (optional)......................(not included)
3.  Condensed Financial Information..........FINANCIAL HIGHLIGHTS
4.  General Description of Registrant........ORGANIZATION AND CLASSIFICATION
5.  Management of the Fund...................MANAGEMENT
6.  Capital Stock and Other Securities.......CAPITAL STOCK; SHAREHOLDER
                                             INQUIRIES; DIVIDENDS AND CAPITAL
                                             GAINS DISTRIBUTIONS; TAXATION
7.  Purchase of Securities Being Offered.....HOW TO BUY FUND SHARES
8.  Redemption or Repurchase.................REDEMPTION
9.  Pending Legal Proceedings................None


PART B STATEMENT OF ADDITIONAL INFORMATION
- ------------------------------------------

10.  Cover Page..............................Cover Page (no caption)
11.  Table of Contents.......................TABLE OF CONTENTS
12.  General Information and History.........ORGANIZATION AND CLASSIFICATION
13.  Investment Objectives and Policies......INVESTMENT OBJECTIVES AND POLICIES
14.  Management of the Fund..................DIRECTORS AND EXECUTIVE OFFICERS
15.  Control Persons and Principal
     Holders of Securities...................CAPITAL STOCK
16.  Investment Advisory and Other Services..INVESTMENT ADVISORY AND OTHER
                                             SERVICES
17.  Brokerage Allocation....................PORTFOLIO TRANSACTIONS AND
                                             ALLOCATION OF BROKERAGE
18.  Capital Stock and Other Securities......CAPITAL STOCK
19.  Purchase, Redemption, and Pricing of
     Securities Being Offered................COMPUTATION OF NET ASSET VALUE AND
                                             PRICING; SPECIAL PURCHASE PLANS;
                                             REDEMPTION
20.  Tax Status..............................TAXATION
21.  Underwriters............................UNDERWRITER
22.  Calculations of Performance Date........PERFORMANCE
23.  Financial Statements....................FINANCIAL STATEMENTS 
<PAGE>
DATED FEBRUARY 1, 1997
MAILING ADDRESS:
P.O. Box 64284
St. Paul
Minnesota 55164
STREET ADDRESS:
500 Bielenberg Drive
Woodbury
Minnesota 55125
Telephone: (612) 738-4000
Toll Free: (800) 800-2638, Ext. 3012
- -------------------------------------------------------
 FORTIS TAX-FREE
 PORTFOLIOS, INC.
 PROSPECTUS
(An income fund with two separate
investment portfolios investing primarily in
securities generating tax-exempt interest)
- ------------------------------------------
National Portfolio
- ----------------------------------
Minnesota Portfolio
- ----------------------------------
THIS PROSPECTUS CONCISELY SETS FORTH THE INFORMATION A PROSPECTIVE INVESTOR
SHOULD KNOW ABOUT THE FUND BEFORE INVESTING. INVESTORS SHOULD RETAIN THIS
PROSPECTUS FOR FUTURE REFERENCE. THE FUND HAS FILED A STATEMENT OF ADDITIONAL
INFORMATION (ALSO DATED FEBRUARY 1, 1997) WITH THE SECURITIES AND EXCHANGE
COMMISSION. THE STATEMENT OF ADDITIONAL INFORMATION IS AVAILABLE FREE OF CHARGE
FROM FORTIS INVESTORS, INC. ("INVESTORS") AT THE ABOVE MAILING ADDRESS OF THE
FUND, AND IS INCORPORATED BY REFERENCE INTO THIS PROSPECTUS IN ACCORDANCE WITH
THE COMMISSION'S RULES.
SHARES IN THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK; ARE NOT FEDERALLY INSURED BY THE FEDERAL DEPOSIT INSURANCE
CORPORATION, THE FEDERAL RESERVE BOARD, OR ANY OTHER AGENCY; AND INVOLVE
INVESTMENT RISKS, INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
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.
 
FORTIS-REGISTERED TRADEMARK- and
Fortis-Registered Trademark- are
registered                                FORTIS
servicemarks of Fortis AMEV and Fortis    SOLID ANSWERS FOR A CHANGING
AG.                                       WORLD-REGISTERED TRADEMARK-
<PAGE>
RISK FACTORS
 
An investment in any of the Portfolios involves certain risks. These include the
following:
 
INTEREST  RATE  RISK.  Interest  rate risk  is  the  risk that  the  value  of a
fixed-rate debt security will decline due  to changes in market interest  rates.
Because the Portfolios invest in fixed-rate debt securities, they are subject to
interest  rate  risk. In  general,  when interest  rates  rise, the  value  of a
fixed-rate debt security declines. Conversely, when interest rates decline,  the
value  of a fixed-rate debt security  generally increases. Thus, shareholders in
the Portfolios bear the risk that increases in market interest rates will  cause
the value of their Portfolio's investments to decline.
 
In  general, the value  of fixed-rate debt securities  with longer maturities is
more sensitive  to changes  in market  interest  rates than  the value  of  such
securities  with shorter  maturities. Thus, the  net asset value  of a Portfolio
which invests in securities  with longer weighted  average maturities should  be
expected to have greater volatility in periods of changing market interest rates
than  that  of a  Portfolio which  invests in  securities with  shorter weighted
average maturities.
 
CREDIT RISK. Credit risk  is the risk  that the issuer of  a debt security  will
fail to make payments on the security when due. Because the Portfolios invest in
debt securities, they are subject to credit risk.
 
The  ratings  and  certain other  requirements  which apply  to  the Portfolios'
permitted investments, as described elsewhere  in this Prospectus, are  intended
to  limit the amount of credit  risk undertaken by the Portfolios. Nevertheless,
shareholders in the Portfolios bear the  risk that payment defaults could  cause
the value of their Portfolio's investments to decline.
 
CALL  RISK. Many  municipal bonds may  be redeemed  at the option  of the issuer
("called") at a specified price prior to their stated maturity date. In general,
it is advantageous for  an issuer to  call its bonds if  they can be  refinanced
through  the issuance of new bonds which bear a lower interest rate than that of
the called bonds.  Call risk  is the  risk that bonds  will be  called during  a
period  of declining  market interest rates  so that such  refinancings may take
place.
 
If a bond held by  a Portfolio is called during  a period of declining  interest
rates,  the Portfolio probably will have to reinvest the proceeds received by it
at a lower interest rate than that borne by the called bond, thus resulting in a
decrease in the Portfolio's income. To the extent that the Portfolios invest  in
callable  bonds, Portfolio shareholders bear the  risk that reductions in income
will result from the call of bonds.
 
STATE AND  LOCAL  POLITICAL AND  ECONOMIC  CONDITIONS. The  value  of  municipal
obligations  owned by the Funds may be adversely affected by local political and
economic  conditions  and  developments.  Adverse  conditions  in  an   industry
significant  to a local  economy could have a  correspondingly adverse effect on
the financial  condition  of local  issuers.  Other factors  that  could  affect
tax-exempt obligations include a change in the local, state or national economy,
demographic factors, ecological or environmental concerns, statutory limitations
on  the  issuer's ability  to increase  taxes  and other  developments generally
affecting the revenues of issuers  (for example, legislation or court  decisions
reducing state aid to local governments or mandating additional services).
 
OTHER.  Investors also  should review  "Investment Objectives  and Policies" for
information concerning risks associated with certain investment techniques which
may be utilized by the Funds. In addition, investors in the Minnesota  Portfolio
should  note that the  1995 Minnesota Legislature enacted  a statement of intent
specifying certain circumstances under which interest on the Minnesota municipal
obligations held by the Fund might become taxable for Minnesota state income tax
purposes. See "Taxation--Minnesota Income Taxation."
 
SUMMARY OF INVESTMENT OBJECTIVES
 
Fortis Tax-Free Portfolios, Inc. (the "Fund") is a mutual fund comprised of  two
separate  investment  portfolios  (the  "Portfolios"),  each  of  which  invests
primarily in securities  yielding interest  that is exempt  from Federal  income
taxes,  and each of which is, for investment purposes, in effect a separate fund
with its own investment policies. A  separate series of capital stock is  issued
for each Portfolio.
 
NATIONAL  PORTFOLIO: The  investment objective of  the Portfolio  is to maximize
total return, to be  derived primarily from current  income exempt from  federal
income  tax (at a level consistent with prudent investment risk) and from change
in the market value of the securities held by the Portfolio.
 
MINNESOTA PORTFOLIO: The investment  objective of the  Portfolio is to  maximize
total  return,  to be  derived primarily  from current  income exempt  from both
federal and Minnesota income tax (at a level consistent with prudent  investment
risk)  and  from  change in  the  market value  of  the securities  held  by the
Portfolio.
 
The Fund's shares are of five classes (A,  B, H, C, and E), each with  different
sales arrangements and expenses.
 
For   more  information  on  the  investment  objectives  and  policies  of  the
Portfolios, as well as risks involved in investing in the Fund, see  "Investment
Objectives and Policies; Risk Considerations."
 
                                       2
<PAGE>
TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
<S>                                                                         <C>
Risk Factors..............................................................     2
Summary of Investment Objectives..........................................     2
Class Shares..............................................................     3
Summary of Fund Expenses..................................................     4
Financial Highlights......................................................     5
Organization and Classification...........................................     7
Investment Objectives and Policies; Risk Considerations...................     7
    - Tax Exempt Bonds....................................................     8
    - Miscellaneous Investment Practices..................................     9
Management................................................................    10
    - Board of Directors..................................................    10
    - The Investment Adviser/Transfer Agent/ Dividend Agent...............    10
    - The Underwriter and Distribution Expenses...........................    10
    - Fund Expenses.......................................................    11
    - Brokerage Allocation................................................    11
Valuation of Securities...................................................    11
Capital Stock.............................................................    11
Dividends and Capital Gains Distributions.................................    12
Taxation..................................................................    12
    - Federal Income Taxation.............................................    12
    - Minnesota Income Taxation...........................................    12
How To Buy Fund Shares....................................................    13
    - General Purchase Information........................................    13
    - Alternative Purchase Arrangements...................................    13
    - Class A and E Shares--Initial Sales Charge Alternative..............    14
    - Class B and H Shares--Contingent Deferred Sales Charge
        Alternatives......................................................    15
    - Class C Shares--Level Sales Charge Alternative......................    15
Redemption................................................................    16
    - Contingent Deferred Sales Charge....................................    17
Shareholder Inquiries.....................................................    18
Appendix..................................................................    18
</TABLE>
 
No  broker-dealer, sales representative, or other  person has been authorized to
give any information or to make  any representations other than those  contained
in  this Prospectus, and  if given or made,  such information or representations
must not be relied upon as having been authorized by the Fund or Investors. This
Prospectus does not constitute an offer  or solicitation by anyone in any  state
in  which such offer or  solicitation is not authorized,  or in which the person
making such offer or solicitation is not qualified to do so, or to any person to
whom it is unlawful to make such offer or solicitation.
 
CLASS SHARES
 
The Fund offers investors  the choice of five  classes of shares with  different
sales  charges  and  expenses.  These  alternatives  permit  choosing  the  most
beneficial method of  purchasing shares given  the amount of  the purchase,  the
length of time the investor expects to hold the shares, and other circumstances.
 
CLASS  A AND E SHARES. Generally, an investor who purchases Class A and E shares
pays a sales charge at the time of  purchase. As a result, Class A and E  shares
are  not subject to any charges when they  are redeemed (except for sales at net
asset value  in excess  of  $1 million  which may  be  subject to  a  contingent
deferred  sales charge). The initial  sales charge may be  reduced or waived for
certain purchases. Class A shares are also  subject to an annual Rule 12b-1  fee
of  .25% of average daily net assets attributable to Class A shares. This fee is
lower than  the other  classes having  Rule 12b-1  fees (all  but Class  E)  and
therefore  Class A shares have lower expenses and pay higher dividends. See "How
to Buy Fund Shares--Class A  Shares." Class E shares are  not subject to a  Rule
12b-1  fee and therefore have the lowest expenses and pay the highest dividends,
but are only available to investors who were shareholders on November 13, 1994.
 
CLASS B AND H SHARES.  The only difference between Class  B and H shares is  the
percentage of dealer concession paid to dealers. This difference does not in any
way  affect the charges on  an investor's shares. Class B  and H shares both are
sold without an initial sales charge,  but are subject to a contingent  deferred
sales  charge of  4% if  redeemed within two  years of  purchase, with declining
charges for redemptions thereafter up to six years after purchase. Class B and H
shares are also  subject to a  higher annual Rule  12b-1 fee than  Class A or  E
shares--1.00%  of the Fund's average daily net assets attributable to Class B or
H shares,  as applicable.  However, after  eight  years, Class  B and  H  shares
automatically  will be converted to Class A shares at no charge to the investor,
resulting in a lower Rule 12b-1 fee thereafter. Class B and H shares provide the
benefit of putting all  dollars to work  from the time  of investment, but  will
have  a higher expense ratio  and pay lower dividends than  Class A and E shares
due to the higher Rule 12b-1 fee and other class specific expenses. See "How  to
Buy Fund Shares--Class B and H Shares."
 
CLASS C SHARES. Class C shares: 1) are sold without an initial sales charge, but
are  subject to a contingent deferred sales  charge of 1% if redeemed within one
year of purchase; 2) are subject to the higher annual Rule 12b-1 fee of 1.00% of
the Fund's  average daily  net assets  attributable to  Class C  shares; and  3)
provide  the benefit of putting all dollars to work from the time of investment,
but will have a higher expense ratio and  pay lower dividends than Class A or  E
shares due to the higher Rule 12b-1 fee and other class specific expenses. While
Class  C shares do  not convert to Class  A shares, they are  subject to a lower
contingent deferred sales charge than Class B or H shares and do not have to  be
held  for as long a  time to avoid paying  the contingent deferred sales charge.
See "How to Buy Fund Shares-- Class C Shares."
 
IN SELECTING WHICH CLASS OF SHARES TO PURCHASE, YOU SHOULD CONSIDER, AMONG OTHER
THINGS, (1) the  length of  time you  expect to  hold your  investment, (2)  the
amount  of any applicable sales charge (whether  imposed at the time of purchase
or redemption) and Rule 12b-1 fees, as noted above, (3) whether you qualify  for
any  reduction or waiver of any applicable sales charge (e.g., if you are exempt
from the sales  charge, you  must invest  in Class  A shares),  (4) the  various
exchange  privileges among the different classes of shares and (5) the fact that
Class B and H shares automatically convert  to Class A shares eight years  after
purchase.
 
                                       3
<PAGE>
SUMMARY OF FUND EXPENSES
The Portfolios' front-end and asset-based sales charges are within the
limitations imposed by the NASD. Such charges are shown below:
 
SHAREHOLDER TRANSACTION EXPENSES
 
<TABLE>
<CAPTION>
      MAXIMUM SALES CHARGE IMPOSED ON PURCHASES           NATIONAL       MINNESOTA
         (AS A PERCENTAGE OF OFFERING PRICE)              PORTFOLIO      PORTFOLIO
- ------------------------------------------------------  -------------  --------------
<S>                                                     <C>            <C>
Class A Shares........................................         4.5%*          4.5%*
Class B and H Shares..................................        0.00%**        0.00%**
Class C Shares........................................        0.00%**        0.00%**
Class E Shares........................................         4.5%           4.5%
</TABLE>
 
<TABLE>
<CAPTION>
  MAXIMUM DEFERRED SALES CHARGE (AS A PERCENTAGE OF
   ORIGINAL PURCHASE PRICE OR REDEMPTION PROCEEDS,         NATIONAL        MINNESOTA
                    AS APPLICABLE)                        PORTFOLIO        PORTFOLIO
- ------------------------------------------------------  --------------  ---------------
<S>                                                     <C>             <C>
Class A Shares........................................            ***             ***
Class B and H Shares..................................         4.0%            4.0%
Class C Shares........................................         1.0%            1.0%
Class E Shares........................................            ***             ***
</TABLE>
 
  *SINCE THE PORTFOLIOS ALSO PAY AN ASSET BASED SALES CHARGE, LONG-TERM
   SHAREHOLDERS MAY PAY MORE THAN THE ECONOMIC EQUIVALENT OF THE MAXIMUM
   FRONT-END SALES CHARGE PERMITTED BY NASD RULES.
 **CLASS B, H AND C SHARES ARE SOLD WITHOUT A FRONT END SALES CHARGE, BUT THEIR
   CONTINGENT DEFERRED SALES CHARGE AND RULE 12B-1 FEES MAY CAUSE LONG-TERM
   SHAREHOLDERS TO PAY MORE THAN THE ECONOMIC EQUIVALENT OF THE MAXIMUM
   PERMITTED FRONT END SALES CHARGES.
***A CONTINGENT DEFERRED SALES CHARGE OF 1.00% IS IMPOSED ON CERTAIN REDEMPTIONS
   OF CLASS A AND E SHARES THAT WERE PURCHASED WITHOUT AN INITIAL SALES CHARGE
   AS PART OF AN INVESTMENT OF $1 MILLION OR MORE. SEE "HOW TO BUY PORTFOLIO
   SHARES--CLASS A AND E SHARES."
 
ANNUAL PORTFOLIO OPERATING EXPENSES (AS A % OF AVERAGE NET ASSETS)
 
<TABLE>
<CAPTION>
                                                               NATIONAL PORTFOLIO
                                             ------------------------------------------------------
                                               CLASS A     CLASS B AND     CLASS C       CLASS E
                                                SHARES       H SHARES       SHARES        SHARES
                                             ------------  ------------  ------------  ------------
<S>                                          <C>           <C>           <C>           <C>
Management Fees............................         .77%          .77%          .77%          .77%
12b-1 Fees.................................         .25%         1.00%         1.00%        --
Other Expenses.............................         .16%          .16%          .16%          .16%
                                                                                               --
                                                    ---           ---           ---
  TOTAL PORTFOLIO OPERATING EXPENSES.......        1.18%         1.93%         1.93%          .93%
</TABLE>
 
<TABLE>
<CAPTION>
                                                              MINNESOTA PORTFOLIO
                                             ------------------------------------------------------
                                               CLASS A     CLASS B AND     CLASS C       CLASS E
                                                SHARES       H SHARES       SHARES        SHARES
                                             ------------  ------------  ------------  ------------
<S>                                          <C>           <C>           <C>           <C>
Management Fees............................         .72%          .72%          .72%          .72%
12b-1 Fees.................................         .25%         1.00%         1.00%        --
Other Expenses.............................         .21%          .21%          .21%          .21%
                                                                                               --
                                                    ---           ---           ---
  TOTAL PORTFOLIO OPERATING EXPENSES.......        1.18%         1.93%         1.93%          .93%
</TABLE>
 
The purpose of these tables is to assist the investor in understanding the
various costs and expenses that an investor in the Portfolio will bear, whether
directly or indirectly. For a more complete description of the various costs and
expenses, see "Management" and "How to Buy Portfolio Shares."
 
EXAMPLE
 
You would pay the following expenses on a $1,000 investment over various time
periods assuming: (1) 5% annual return; and (2) redemption at the end of each
time period. This example includes conversion of Class B and H shares to Class A
shares after eight years and a waiver of deferred sales charges on Class B and H
shares of 10% of the amount invested. See "Contingent Deferred Sales
Charge--Class B, H, and C Shares."
 
<TABLE>
<CAPTION>
                                                      NATIONAL PORTFOLIO
                                             -------------------------------------
                                             1 YEAR   3 YEARS   5 YEARS   10 YEARS
                                             ------   -------   -------   --------
<S>                                          <C>      <C>       <C>       <C>
Class A Shares.............................  $  56    $   81    $  107    $   182
Class B and H Shares.......................  $  56    $   88    $  122    $   206
Class C Shares.............................  $  30    $   61    $  104    $   225
Class E Shares.............................  $  54    $   73    $   94    $   154
</TABLE>
 
<TABLE>
<CAPTION>
                                                      MINNESOTA PORTFOLIO
                                             -------------------------------------
                                             1 YEAR   3 YEARS   5 YEARS   10 YEARS
                                             ------   -------   -------   --------
<S>                                          <C>      <C>       <C>       <C>
Class A Shares.............................  $  56    $   81    $  107    $   182
Class B and H Shares.......................  $  56    $   88    $  122    $   206
Class C Shares.............................  $  30    $   61    $  104    $   225
Class E Shares.............................  $  54    $   73    $   94    $   154
</TABLE>
 
Assuming no redemption, the Class B, H, and C expenses on the same investment
would be as follows:
 
<TABLE>
<CAPTION>
                                                      NATIONAL PORTFOLIO
                                             -------------------------------------
                                             1 YEAR   3 YEARS   5 YEARS   10 YEARS
                                             ------   -------   -------   --------
<S>                                          <C>      <C>       <C>       <C>
Class B and H Shares.......................  $  20    $   61    $  104    $   206
Class C Shares.............................  $  20    $   61    $  104    $   225
</TABLE>
 
<TABLE>
<CAPTION>
                                                      MINNESOTA PORTFOLIO
                                             -------------------------------------
                                             1 YEAR   3 YEARS   5 YEARS   10 YEARS
                                             ------   -------   -------   --------
<S>                                          <C>      <C>       <C>       <C>
Class B and H Shares.......................  $  20    $   61    $  104    $   206
Class C Shares.............................  $  20    $   61    $  104    $   225
</TABLE>
 
The above example should not be considered a representation of past or future
expenses or performance. Actual expenses may be greater or less than those
shown.
 
                                       4
<PAGE>
- --------------------------------------------------------------------------------
 
FINANCIAL HIGHLIGHTS
(For a share outstanding throughout the period)
 
The information below has been derived from audited financial statements and
should be read in conjunction with the financial statements of the Fund and
independent auditors' report of KPMG Peat Marwick LLP found in the Fund's 1996
Annual Report to Shareholders, which may be obtained without charge.
<TABLE>
<CAPTION>
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
NATIONAL PORTFOLIO -- CLASS E SHARES
- ---------------------------------------------------                                                                 SIX-MONTH
                                               YEAR ENDED          THREE-MONTH             YEAR ENDED             PERIOD ENDED
                                              SEPTEMBER 30,       PERIOD ENDED              JUNE 30,                JUNE 30,
                                          ---------------------   SEPTEMBER 30,   -----------------------------   -------------
                                            1996        1995          1994          1994       1993      1992         1991
                                          ---------   ---------       -----       ---------   -------   -------        ---
- ----------------------------------------
<S>                                       <C>         <C>         <C>             <C>         <C>       <C>       <C>
Net asset value, beginning of period....   $10.72      $10.38        $10.46        $11.13     $10.54     $9.99       $9.82
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Operations:
  Investment income -- net..............      .56         .58           .15           .60        .63       .66         .32
  Net realized and unrealized gains
   (losses) on investments..............      .04         .36          (.09)         (.64)       .59       .55         .17
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
    Total from operations...............      .60         .94           .06          (.04)      1.22      1.21        0.49
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Distribution to shareholders:
  From investment income -- net.........     (.56)       (.59)         (.14)         (.59)      (.62)     (.66)       (.32)
  From realized gains...................    --           (.01)       --              (.04)      --        --         --
  Excess distribution of net investment
   income...............................    --          --           --             --          (.01)     --         --
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Total distributions to shareholders.....     (.56)       (.60)         (.14)         (.63)      (.63)     (.66)       (.32)
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Net asset value, end of period..........   $10.76      $10.72        $10.38        $10.46     $11.13    $10.54       $9.99
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Total Return@...........................     5.69%       9.30%          .59%        (0.49%)    11.99%    12.46%       5.09%
Net assets at end of period (000's
 omitted)...............................  $65,237     $70,531       $74,877       $76,746     70,754    54,189      43,707
Ratio of expenses to average daily net
 assets.................................      .93%       1.03%          .87%*         .87%       .94%      .92%        .95%*
Ratio of net investment income to
 average daily net assets...............     5.19%       5.54%         5.74%*        5.38%      5.80%     6.40%       6.58%*
Portfolio turnover rate.................       52%         35%           17%           25%        29%       38%         25%
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
 
<CAPTION>
- ----------------------------------------  -------   -------   -------   -------
NATIONAL PORTFOLIO -- CLASS E SHARES
- ----------------------------------------
                                                       YEAR ENDED
                                                      DECEMBER 31,
                                          -------------------------------------
                                           1990      1989      1988      1987
                                          -------   -------   -------   -------
- ----------------------------------------
<S>                                       <C>       <C>       <C>       <C>
Net asset value, beginning of period....   $9.98     $9.85     $9.64    $10.31
- ----------------------------------------  -------   -------   -------   -------
Operations:
  Investment income -- net..............     .66       .72       .72       .69
  Net realized and unrealized gains
   (losses) on investments..............    (.15)      .13       .21      (.58)
- ----------------------------------------  -------   -------   -------   -------
    Total from operations...............    0.51      0.85      0.93       .11
- ----------------------------------------  -------   -------   -------   -------
Distribution to shareholders:
  From investment income -- net.........    (.67)     (.72)     (.72)     (.74)
  From realized gains...................    --        --        --        (.04)
  Excess distribution of net investment
   income...............................    --        --        --        --
- ----------------------------------------  -------   -------   -------   -------
Total distributions to shareholders.....    (.67)     (.72)     (.72)     (.78)
- ----------------------------------------  -------   -------   -------   -------
Net asset value, end of period..........   $9.82     $9.98     $9.85     $9.64
- ----------------------------------------  -------   -------   -------   -------
Total Return@...........................    5.33%     8.94%     9.98%     1.20%
Net assets at end of period (000's
 omitted)...............................  41,041    36,874    28,985    18,895
Ratio of expenses to average daily net
 assets.................................     .95%      .94%     1.09%     1.16%
Ratio of net investment income to
 average daily net assets...............    6.71%     6.99%     7.17%     7.29%
Portfolio turnover rate.................      90%       86%      120%       98%
- ----------------------------------------  -------   -------   -------   -------
- ----------------------------------------  -------   -------   -------   -------
</TABLE>
<TABLE>
<CAPTION>
NATIONAL PORTFOLIO
- -----------------------------------------------------------------
                                                           CLASS A SHARES           CLASS B SHARES           CLASS C SHARES
                                                       -----------------------  -----------------------  -----------------------
                                                                                YEAR ENDED SEPTEMBER 30
                                                       -------------------------------------------------------------------------
                                                          1996        1995+        1996        1995+        1996        1995+
<S>                                                    <C>         <C>          <C>         <C>          <C>         <C>
- --------------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning of period.................     $10.71       $9.79       $10.70       $9.79       $10.70       $9.79
- --------------------------------------------------------------------------------------------------------------------------------
Operations:
  Investment income -- net...........................        .53         .49          .45         .42          .45         .43
  Net realized and unrealized gains (losses) on
   investments.......................................        .04         .94          .04         .93          .04         .92
- --------------------------------------------------------------------------------------------------------------------------------
Total from operations................................        .57        1.43          .49        1.35          .49        1.35
- --------------------------------------------------------------------------------------------------------------------------------
Distributions to shareholders:
  From investment income -- net......................       (.53 )      (.50  )      (.45 )      (.43  )      (.45 )      (.43 )
  From net realized gains............................     --            (.01  )    --            (.01  )    --            (.01 )
- --------------------------------------------------------------------------------------------------------------------------------
Total distributions to shareholders..................       (.53 )      (.51  )      (.45 )      (.44  )      (.45 )      (.44 )
- --------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period.......................  $   10.75   $   10.71    $   10.74   $   10.70    $   10.74   $   10.70
- --------------------------------------------------------------------------------------------------------------------------------
Total Return@........................................       5.46 %     14.80  %      4.65 %     13.96  %      4.65 %     13.95 %
Net assets at end of period (000's omitted)..........     $6,239      $1,807         $997        $668         $223        $106
Ratio of expenses to average daily net assets........       1.18 %      1.28  %*      1.93 %      2.03  %*      1.93 %      2.03 %*
Ratio of net investment income to average daily net
 assets..............................................       4.97 %      5.03  %*      4.20 %      4.04  %*      4.20 %      4.14 %*
Portfolio turnover rate..............................         52 %        35  %        52 %        35  %        52 %        35 %
- --------------------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
NATIONAL PORTFOLIO
- -----------------------------------------------------
                                                           CLASS H SHARES
                                                       -----------------------
 
                                                          1996        1995+
<S>                                                    <C>         <C>
- -----------------------------------------------------
Net asset value, beginning of period.................     $10.71       $9.79
- -----------------------------------------------------
Operations:
  Investment income -- net...........................        .45         .43
  Net realized and unrealized gains (losses) on
   investments.......................................        .04         .93
- -----------------------------------------------------
Total from operations................................        .49        1.36
- -----------------------------------------------------
Distributions to shareholders:
  From investment income -- net......................       (.45 )      (.43  )
  From net realized gains............................     --            (.01  )
- -----------------------------------------------------
Total distributions to shareholders..................       (.45 )      (.44  )
- -----------------------------------------------------
Net asset value, end of period.......................  $   10.75   $   10.71
- -----------------------------------------------------
Total Return@........................................       4.64 %     14.06  %
Net assets at end of period (000's omitted)..........     $4,015      $1,757
Ratio of expenses to average daily net assets........       1.93 %      2.03  %*
Ratio of net investment income to average daily net
 assets..............................................       4.20 %      4.24  %*
Portfolio turnover rate..............................         52 %        35  %
- -----------------------------------------------------
</TABLE>
 
 * Annualized.
 + For the period from November 14, 1994 (commencement of operations) to
   September 30, 1995.
@ These are the portfolio's total returns during the period, including
  reinvestment of all dividend and capital gains distributions, without
  adjustment for sales charge.
 
                                       5
<PAGE>
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
MINNESOTA PORTFOLIO -- CLASS E SHARES
- ---------------------------------------------------------------                                                     SIX-MONTH
                                               YEAR ENDED          THREE-MONTH             YEAR ENDED             PERIOD ENDED
                                              SEPTEMBER 30,       PERIOD ENDED              JUNE 30,                JUNE 30,
                                          ---------------------   SEPTEMBER 30,   -----------------------------   -------------
                                            1996        1995          1994          1994       1993      1992         1991
<S>                                       <C>         <C>         <C>             <C>         <C>       <C>       <C>
- ----------------------------------------  ---------   ---------       -----       ---------   -------   -------        ---
Net asset value, beginning of period....   $10.32      $10.08        $10.15        $10.65     $10.16     $9.78       $9.68
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Operations:
  Investment income -- net..............      .55         .57           .15           .59        .61       .64         .31
  Net realized and unrealized gains
   (losses) on investments..............     (.04)        .24          (.08)         (.51)       .49       .38         .11
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
    Total from operations...............      .51         .81           .07           .08       1.10      1.02         .42
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Distribution to shareholders:
  From investment income -- net.........     (.55)       (.57)         (.14)         (.58)      (.61)     (.64)       (.32)
  From realized gains...................    --          --           --             --          --        --         --
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Total distributions to shareholders.....     (.55)       (.57)         (.14)         (.58)      (.61)     (.64)       (.32)
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Net asset value, end of period..........   $10.28      $10.32        $10.08        $10.15     $10.65    $10.16       $9.78
- ----------------------------------------  ---------   ---------      ------       ---------   -------   -------      -----
Total Return@...........................     5.01%       8.35%          .72%          .64%     11.17%    10.71%       4.36%
Net assets end of period (000s
 omitted)...............................  $49,262     $52,603       $54,560       $54,854     52,271    38,586      29,449
Ratio of expenses to average daily net
 assets.................................      .93%        .98%          .85%*         .85%       .89%      .90%        .97%*
Ratio of net investment income to
 average daily net assets...............     5.34%       5.60%         5.69%*        5.51%      5.82%     6.37%       6.47%*
Portfolio turnover rate.................       41%         27%            8%           11%        17%       10%          8%
 
<CAPTION>
MINNESOTA PORTFOLIO -- CLASS E SHARES
- ----------------------------------------
                                                       YEAR ENDED
                                                      DECEMBER 31,
                                          -------------------------------------
                                           1990      1989      1988      1987
<S>                                       <C>       <C>       <C>       <C>
- ----------------------------------------  -------   -------   -------   -------
Net asset value, beginning of period....   $9.73     $9.65     $9.46    $10.23
- ----------------------------------------  -------   -------   -------   -------
Operations:
  Investment income -- net..............     .63       .68       .68       .66
  Net realized and unrealized gains
   (losses) on investments..............    (.05)      .08       .20      (.73)
- ----------------------------------------  -------   -------   -------   -------
    Total from operations...............     .58       .76       .88      (.07)
- ----------------------------------------  -------   -------   -------   -------
Distribution to shareholders:
  From investment income -- net.........    (.63)     (.68)     (.69)     (.70)
  From realized gains...................    --        --        --        --
- ----------------------------------------  -------   -------   -------   -------
Total distributions to shareholders.....    (.63)     (.68)     (.69)     (.70)
- ----------------------------------------  -------   -------   -------   -------
Net asset value, end of period..........   $9.68     $9.73     $9.65     $9.46
- ----------------------------------------  -------   -------   -------   -------
Total Return@...........................    6.20%     8.19%     9.60%     (.57)%
Net assets end of period (000s
 omitted)...............................  26,481    24,720    15,909     9,007
Ratio of expenses to average daily net
 assets.................................     .98%      .98%     1.00%     1.00%
Ratio of net investment income to
 average daily net assets...............    6.56%     6.70%     6.63%     7.13%
Portfolio turnover rate.................      63%       36%       61%       78%
</TABLE>
<TABLE>
<CAPTION>
- ---------------------------------------------------      -----       -----       -----       -----       -----       -----
                                                         CLASS A SHARES          CLASS B SHARES          CLASS C SHARES
                                                     ----------------------  ----------------------  ----------------------
                                                                            YEAR ENDED SEPTEMBER 30
MINNESOTA PORTFOLIO
<S>                                                  <C>         <C>         <C>         <C>         <C>         <C>
                                                     ----------------------------------------------------------------------
- ---------------------------------------------------------------
                                                        1996       1995+        1996       1995+        1996       1995+
- ---------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning of period...............     $10.30       $9.55      $10.27       $9.55      $10.30       $9.55
- ---------------------------------------------------------------------------------------------------------------------------
Operations:
  Investment income -- net.........................        .52         .48         .45         .41         .44         .42
  Net realized and unrealized gains (losses) on
   investments.....................................       (.04 )       .76        (.04 )       .73        (.04 )       .75
- ---------------------------------------------------------------------------------------------------------------------------
Total from operations..............................        .48        1.24         .41        1.14         .40        1.17
- ---------------------------------------------------------------------------------------------------------------------------
Distributions to shareholders:
  From investment income -- net....................       (.52 )      (.49 )      (.44 )      (.42 )      (.44 )      (.42)
  From net realized gains..........................         --          --          --          --          --          --
- ---------------------------------------------------------------------------------------------------------------------------
Total distributions to shareholders................       (.52 )      (.49 )      (.44 )      (.42 )      (.44 )      (.42)
- ---------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period.....................     $10.26      $10.30      $10.24      $10.27      $10.26      $10.30
- ---------------------------------------------------------------------------------------------------------------------------
Total Return@......................................       4.78 %     13.15 %      4.04 %     12.10 %      4.00 %     12.31%
Net assets at end of period (000's omitted)........     $1,822        $884      $1,109        $180        $210        $143
Ratio of expenses to average daily net assets......       1.18 %      1.23 %      1.93 %      1.98 %*      1.93 %      1.98%*
Ratio of net investment income to average daily net
 assets............................................       5.07 %      5.10 %      4.34 %      4.37 %*      4.31 %      4.28%*
Portfolio turnover rate............................         41 %        27 %        41 %        27 %        41 %        27%
- ---------------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
- ---------------------------------------------------      -----       -----
                                                         CLASS H SHARES
                                                     ----------------------
 
MINNESOTA PORTFOLIO
<S>                                                  <C>         <C>
 
- ---------------------------------------------------
                                                        1996       1995+
- ---------------------------------------------------
Net asset value, beginning of period...............     $10.30       $9.55
- ---------------------------------------------------
Operations:
  Investment income -- net.........................        .44         .41
  Net realized and unrealized gains (losses) on
   investments.....................................       (.04 )       .76
- ---------------------------------------------------
Total from operations..............................        .40        1.17
- ---------------------------------------------------
Distributions to shareholders:
  From investment income -- net....................       (.44 )      (.42 )
  From net realized gains..........................         --          --
- ---------------------------------------------------
Total distributions to shareholders................       (.44 )      (.42 )
- ---------------------------------------------------
Net asset value, end of period.....................     $10.26      $10.30
- ---------------------------------------------------
Total Return@......................................       3.93 %     12.42 %
Net assets at end of period (000's omitted)........     $1,061        $638
Ratio of expenses to average daily net assets......       1.93 %      1.98 %*
Ratio of net investment income to average daily net
 assets............................................       4.33 %      4.29 %*
Portfolio turnover rate............................         41 %        27 %
- ---------------------------------------------------
</TABLE>
 
 * Annualized.
 + For the period from November 14, 1994 (commencement of operations) to
   September 30, 1995.
@ These are the portfolio's total returns during the period, including
  reinvestment of all dividend and capital gains distributions, without
  adjustment for sales charge.
 
                                       6
<PAGE>
The Portfolios may advertise their "cumulative total return," "average annual
total return," "systematic investment plan cumulative total return," and
"systematic investment plan average annual total return," and may compare such
figures to recognized indices. Performance figures are calculated separately for
each class of shares, and figures for each class will be presented. The
Portfolios may advertise their "yield." When they advertise yield, they will
also advertise "average annual total return" for the most recent one, five, and
ten year periods, along with other performance data. The Portfolios also may
advertise their "tax equivalent yield" where yield and total return are
advertised. The Portfolios may advertise relative performance as compiled by
outside organizations such as Lipper Analytical or Wiesenberger, or refer to
publications which have mentioned the Fund, Advisers, or their personnel, and
also may advertise other performance items as set forth in the Statement of
Additional Information. The performance discussion required by the Securities
and Exchange Commission is found in the Fund's Annual Report to Shareholders and
will be made available without charge upon request.
 
ORGANIZATION AND CLASSIFICATION
 
The Fund was incorporated under Minnesota law in 1982, and is registered with
the Securities and Exchange Commission under the Investment Company Act of 1940
(the "1940 Act") as an "open-end management investment company".
 
The Fund is comprised of two separate investment portfolios (the
"Portfolios")--the National Portfolio and the Minnesota Portfolio. The
Portfolios are classified as diversified investment companies under the 1940
Act. Each Portfolio is, for investment purposes, in effect a separate investment
fund. A separate series of capital stock is issued for each Portfolio. Each
share of capital stock issued with respect to a Portfolio has a pro-rata
interest in the assets of that Portfolio and has no interest in the assets of
any other Portfolio. Each Portfolio bears its own liabilities and also its
proportionate share of the general liabilities of the Fund. In other respects,
however, the Fund is treated as one entity.
 
INVESTMENT OBJECTIVES AND POLICIES; RISK CONSIDERATIONS
 
The Fund currently is comprised of two separate investment portfolios, each with
its own investment goals, policies, and investment restrictions. The investment
objective of the National Portfolio is to maximize total return, to be derived
primarily from current income exempt from federal income tax (at a level
consistent with prudent investment risk) and from change in the market value of
the securities held by the Portfolio. The National Portfolio will invest
primarily in securities of states, territories, and possessions of the United
States and the District of Columbia, and their political subdivisions, agencies,
and instrumentalities. The investment objective of the Minnesota Portfolio is to
maximize total return, to be derived primarily from current income exempt from
both federal and Minnesota income tax (at a level consistent with prudent
investment risk) and from change in the market value of the securities held by
the Portfolio. The Minnesota Portfolio will invest primarily in securities which
are issued by the State of Minnesota, its agencies, instrumentalities, and
political subdivisions. There is no assurance that the investment objectives of
either Portfolio will be achieved. The investment objectives of the Portfolios
and, except as otherwise noted, their investment policies, could be changed
without shareholder approval. Any change in a Portfolio's investment objective
may result in the Portfolio having an investment objective which is different
from that which an investor deemed appropriate to his or her objectives at the
time of investment.
 
The Portfolios will seek to achieve their investment objectives by investing
primarily in Tax Exempt Bonds. For purposes of the National Portfolio, "Tax
Exempt Bonds" means any debt obligation generating interest income that is
exempt, in the opinion of bond counsel, from federal income tax. For purposes of
the Minnesota Portfolio, "Tax Exempt Bonds" means any debt obligation generating
interest income that, in the opinion of bond counsel, is not includable in gross
income for Federal income tax purposes or in taxable net income of individuals,
estates, and trusts for Minnesota income tax purposes.
 
As policies which may not be changed without shareholder approval, except for
defensive purposes: the National Portfolio will invest at least 80% of its net
assets in securities that generate interest that is not includable in gross
income for federal income tax purposes and is not an item of tax preference for
purposes of the federal alternative minimum tax; the Minnesota Portfolio will
invest at least 80% of its net assets in securities that generate interest that
is not includable in federal gross income or in taxable net income of
individuals, estates, and trusts for Minnesota Income Tax purposes and is not an
item of tax preference for purposes of the Federal or State of Minnesota
alternative minimum tax. (Ninety-five percent or more of the exempt-interest
dividends paid by the Minnesota Portfolio will be derived from interest income
on obligations of the State of Minnesota or its political or governmental
subdivisions, municipalities, governmental agencies or instrumentalities.).
 
A policy which may not be changed without shareholder approval is that at least
90% of the Tax Exempt Bonds purchased by each Portfolio will be of "investment
grade" quality. This means that they will be rated, at the time of purchase,
within the four highest grades assigned by either Moody's Investors Service,
Inc. ("Moody's") (Aaa, Aa, A or Baa) or Standard & Poor's Ratings Services
("Standard & Poor's") (AAA, AA, A or BBB) or will be unrated securities which at
the time of purchase are judged by Fortis Advisers, Inc. ("Advisers") to be of
comparable quality to securities rated within such four highest grades.
Securities rated Baa or BBB are medium grade, involve some speculative elements
and are the lowest investment grade available. Securities rated BBB have
speculative characteristics and changes in economic conditions or other
circumstances are more likely to lead to a weakened capacity to make principal
and interest payments than is the case with higher grade securities. Securities
rated below BBB (non-investment grade securities) are regarded, on balance, as
predominantly speculative with respect to capacity to pay interest and repay
principal in accordance with the terms of the obligation. Participation in
lower-rated securities transactions generally involves greater returns in the
form of higher average yields. However, participation in such transactions
involves greater risks, often related to sensitivity to interest rates, economic
changes, solvency, and relative liquidity in the secondary market. For a more
detailed discussion of the risks connected with such investments, see
"Investment Objectives and Policies--Risks of Transactions in High-Yielding
Securities" in the Statement of Additional Information. The Portfolios may
retain a portfolio security whose rating has changed if the security otherwise
meets the Portfolios' respective investment objectives and investment criteria.
 
                                       7
<PAGE>
A description of the ratings of tax exempt securities of Moody's and of Standard
& Poor's is set forth in the Appendix.
 
Rated, as well as unrated, Tax Exempt Bonds will be analyzed by Advisers on the
basis of available information as to creditworthiness and with a view to various
qualitative factors and trends affecting Tax Exempt Bonds generally. It should
be noted, however, that the amount of information about the financial condition
of an issuer of Tax Exempt Bonds may not be as extensive as that which is made
available by many corporations whose securities are more actively traded. While
the Portfolios are free to invest in securities of any maturity, it is expected
that the average maturity of the Portfolios will generally range from seven to
20 years.
 
The Portfolios may invest without limitation in taxable obligations on a
temporary, defensive basis due to market conditions. Such taxable obligations,
whether purchased for temporary or liquidity purposes or on a defensive basis,
may include: obligations of the U.S. government, its agencies or
instrumentalities; other debt securities rated within the four highest grades by
either Moody's or Standard & Poor's; commercial paper rated in the highest grade
by either of such rating services (Prime-1 or A-1, respectively); certificates
of deposit and bankers' acceptances of domestic banks which have assets of over
$1 billion; variable amount master demand notes; and repurchase agreements with
respect to any of the foregoing investments. The Portfolios may also hold their
respective assets in cash.
 
TAX EXEMPT BONDS
 
Tax Exempt Bonds include primarily debt obligations of the states, their
agencies, universities, boards, authorities and political subdivisions (for
example, cities, towns, counties, school districts, authorities and commissions)
issued to obtain funds for various public purposes, including the construction
or improvement of a wide range of public facilities such as airports, bridges,
highways, hospitals, housing, jails, mass transportation, nursing homes, parks,
public buildings, recreational facilities, school facilities, streets and water
and sewer works. Other public purposes for which Tax Exempt Bonds may be issued
include the refunding of outstanding obligations, the anticipation of taxes or
state aids, the payment of judgments, the funding of student loans, community
redevelopment, district heating, the purchase of street maintenance and
firefighting equipment, or any authorized corporate purpose of the issuer except
for the payment of current expenses. In addition, certain types of industrial
development bonds may be issued by or on behalf of public corporations to
finance privately operated housing facilities, air or water pollution control
facilities and certain local facilities for water supply, gas, electricity or
sewage or solid waste disposal. Such obligations are included within the term
Tax Exempt Bonds if the interest payable thereon is, in the opinion of bond
counsel, exempt from federal income taxation and, for the Minnesota Portfolio,
State of Minnesota income taxation (excluding excise taxes imposed on
corporations and banks and measured by income). Other types of industrial
development bonds, the proceeds of which are used for the construction,
equipment, repair or improvement of privately operated industrial, commercial or
office facilities constitute Tax Exempt Bonds, although current federal income
tax laws place substantial limitations on the size of such issues.
 
The two principal classifications of Tax Exempt Bonds are general obligation
bonds and limited obligation (or revenue) bonds. General obligation bonds are
obligations involving credit of an issuer possessing taxing power and are
payable from the issuer's general unrestricted revenues and not from any
particular fund or revenue source. The characteristics and methods of
enforcement of general obligation bonds vary according to the law applicable to
the particular issuer. Limited obligation bonds are payable only from the
revenues derived from a particular facility or class of facilities or, in some
cases, from the proceeds of a specific revenue source, such as the user of the
facility. Industrial development bonds are in most cases limited obligation
bonds payable solely from specific revenues of the project to be financed,
pledged to their payment. The credit quality of industrial development bonds is
usually directly related to the credit standing of the user of the facilities
(or the credit standing of a third-party guarantor or other credit enhancement
participant, if any). There are, of course, variations in the quality of Tax
Exempt Bonds, both within a particular classification and between
classifications, depending on various factors. (See Appendix). The Fund does not
currently intend to invest in so-called "moral obligation" bonds, where
repayment is backed by a moral commitment of an entity other than the issuer,
unless the credit of the issuer itself, without regard to the "moral
obligation," meets the investment criteria established for investments by the
Fund.
 
The yields on Tax Exempt Bonds are dependent on a variety of factors, including
general money market conditions, the financial condition of the issuer, general
conditions of the Tax Exempt Bond market, the size of a particular offering, the
maturity of the obligation and the rating of the issue. The ratings of Moody's
and Standard & Poor's represent their opinions as to the quality of the Tax
Exempt Bonds which they undertake to rate. It should be emphasized, however,
that ratings are general, not absolute, standards of quality. Consequently, Tax
Exempt Bonds of the same maturity, interest rate and rating may have different
yields, while Tax Exempt Bonds of the same maturity and interest rate with
different ratings may have the same yield. Subsequent to their purchase by the
Portfolios, particular Tax Exempt Bonds or other investments may cease to be
rated or their ratings may be reduced below the minimum rating required for
purchase by the Portfolios. Neither event will require the elimination of an
investment from the Portfolio, but Advisers will consider such an event in its
determination of whether the Portfolio should continue to hold such an
investment.
 
As a fundamental policy, each Portfolio will not invest 25% or more of its total
assets in limited obligation bonds payable only from revenues derived from
facilities or projects within a single industry. As to utility companies, gas,
electric, water and telephone companies will be considered as separate
industries. For this purpose, municipal bonds refunded with U.S. Government
securities will be treated as investments in U.S. Government securities, and are
not subject to this requirement or the 5% diversification requirement under the
1940 Act. These refunded municipal bonds will however be counted toward the 80%
policy described under "Investment Objectives and Policies; Risk
Considerations."
 
Securities in which the Fund may invest, including Tax Exempt Bonds, are subject
to the provisions of bankruptcy, insolvency, reorganization and other laws
affecting the rights and remedies of creditors, such as the federal Bankruptcy
Code and laws, if any, which may be enacted by Congress or the Minnesota
legislature extending the time for payment of principal or interest, or both, or
imposing other constraints upon enforcement of such obligations. There is also
the possibility that, as a result of litigation or other conditions the power or
ability of issuers to meet their obligations for the payment of interest on and
principal of their Tax Exempt Bonds may be materially affected.
 
                                       8
<PAGE>
Current economic conditions in each respective state affect both the total
amount of taxes each state collects and the personal income growth within each
state. Budgetary shortfalls may result in reductions in credit ratings for
securities issued by the states. This may cause an increase in the yield and a
decrease in the price of a security issued by a particular state. Furthermore,
because local finances are dependent upon the fiscal integrity of the state and
upon the same financial factors that influence state government, the credit
ratings of state agencies, authorities and municipalities may be similarly
affected. See the Statement of Additional Information for more information
concerning each state.
 
MISCELLANEOUS INVESTMENT PRACTICES
 
OPTIONS ON SECURITIES. The Portfolios may buy and sell, put and call options on
securities (including "straddles") and write covered call and covered put
options on securities in order to facilitate their investment objectives.
 
Options transactions may subject the Portfolios to a number of risks. The risk
of purchasing options is that the Portfolio pays a premium for such options,
whether they are exercised or not. The risk of writing calls is that the
Portfolio forgoes a portion of the profit if the securities' price increases
substantially. The risk of writing put options is that the Portfolio may incur a
loss if the price of the security falls and the option is exercised.
 
Options contracts are valued daily at their closing prices, and unrealized
appreciation or depreciation is recorded. Gains from options transactions are
taxable income to shareholders. Gains and losses are realized when the options
position is closed or expires.
 
The total market value of securities against which the Portfolios may write call
or put options will not exceed 25% of their respective total assets. The
Portfolios will not commit more than 5% of their respective total assets to
premiums when purchasing call or put options.
 
FORWARD COMMITMENTS. New issues of Tax Exempt Bonds and other securities are
often purchased on a "when issued" or delayed delivery basis, with delivery and
payment for the securities normally taking place 15 to 45 days after the date of
the transaction. Such an agreement to purchase securities is termed a "forward
commitment." The payment obligation and the interest rate that will be received
on the securities are each fixed at the time the buyer enters into the
commitment.
 
The Portfolios may enter into such forward commitments if the Portfolios hold,
and maintain until the settlement date in a segregated account, cash or any
security that is not considered restricted or illiquid, equal to the value of
the when-issued or forward commitment securities and marked to market daily.
There is no percentage limitation on the Portfolios' total assets which may be
invested in forward commitments. The purchase of securities on a when-issued,
delayed delivery or forward commitment basis exposes a Portfolio to risk because
the securities may decrease in value prior to their delivery. Purchasing
securities on a when-issued, delayed delivery or forward commitment basis
involves the additional risk that the return available in the market when the
delivery takes place will be higher than that obtained in the transaction
itself. These risks could result in increased volatility of a Portfolio's net
asset value to the extent that such Portfolio purchases securities on a
when-issued, delayed delivery or forward commitment basis while remaining
substantially fully invested. There is also a risk that the securities may not
be delivered or that a Portfolio may incur a loss or will have lost the
opportunity to invest the amount set aside for such transaction in the
segregated asset account. Although the Portfolios will generally enter into
forward commitments with the intention of acquiring Tax Exempt Bonds or other
securities, the Fund may dispose of a commitment prior to settlement if Advisers
deems it appropriate to do so. The Portfolios may realize short-term profits or
losses upon the sale of forward commitments.
 
PORTFOLIO TURNOVER. Portfolio transactions will be undertaken principally to
accomplish the Portfolios' objectives in relation to anticipated movements in
the general level of interest rates. Securities may be sold in anticipation of a
market decline (a rise in interest rates) or purchased in anticipation of a
market rise (a decline in interest rates) and later sold. In addition, a
security may be sold and another purchased at approximately the same time to
take advantage of what Advisers believes to be a temporary disparity in the
normal yield relationship between the two securities. Yield disparities may
occur for reasons not directly related to the investment quality of particular
issues or the general movement of interest rates, due to such factors as changes
in the overall demand for or supply of various types of Tax Exempt Bonds or
changes in the investment objectives of investors.
 
The Fund's investment policies may lead to frequent changes in investments,
particularly in periods of rapidly fluctuating interest rates. A change in
securities held by the Portfolios is known as "portfolio turnover" and may
involve the payment by the Portfolios of dealer mark-ups or underwriting
commissions, and other transaction costs, on the sale of securities as well as
on the reinvestment of the proceeds in other securities. The portfolio turnover
rate for a fiscal year is the ratio of the lesser of purchases or sales of
portfolio securities to the monthly average of the value of portfolio
securities--excluding securities whose maturities at acquisition were one year
or less.
 
FLOATING AND VARIABLE RATE SECURITIES. The Fund also may purchase floating and
variable rate Tax Exempt Bonds. These notes normally have a stated maturity in
excess of one year, but permit the holder to demand payment of principal plus
accrued interest upon a specified number of days' notice. Frequently, such
obligations are secured by letters of credit or other credit support
arrangements provided by banks. Use of letters of credit or other credit support
arrangements will generally not adversely affect the tax exempt status of these
obligations. Advisers will rely upon the opinion of the issuer's bond counsel to
determine whether such notes are exempt from federal income taxes and, for the
Minnesota Portfolio, Minnesota income tax. The issuer of floating and variable
rate demand notes normally has a corresponding right, after a given period, to
prepay at its discretion the outstanding principal amount of the note plus
accrued interest upon a specified number of days' notice to the noteholders. The
interest rate on a floating rate demand note is based on a known lending rate,
such as a bank's prime rate, and is adjusted automatically each time such rate
is adjusted. The interest rate on a variable rate demand note is adjusted at
specified intervals, based on a known lending rate, generally the rate on 90-day
U.S. Treasury bills. Advisers will monitor the creditworthiness of the issuers
of floating and variable rate demand notes. Such obligations are not as liquid
as many other types of Tax Exempt Bonds.
 
For the purpose of diversification under the 1940 Act, the identification of the
issuer of Tax Exempt Bonds depends on the terms and conditions of the security.
If a state or a political subdivision of such state pledges its full faith and
credit to payment of a security, the
 
                                       9
<PAGE>
state or the political subdivision, respectively, will be deemed the sole issuer
of  the  security.  If  the  assets and  revenues  of  an  agency,  authority or
instrumentality of the state or a political subdivision are separate from  those
of  the state or  political subdivision and  the security is  backed only by the
assets and revenues of  the agency, authority  or instrumentality, such  agency,
authority  or instrumentality will be deemed to be the sole issuer. Moreover, if
the security is backed only by revenues of an enterprise or specific projects of
the state, a political subdivision or agency, authority or instrumentality, such
as utility revenue bonds, and the full faith and credit of the governmental unit
is not  pledged to  the payment  thereof, such  enterprise or  projects will  be
deemed  the sole  issuer. Similarly,  in the  case of  an industrial development
bond, if that bond is  backed only by certain revenues  to be received from  the
non-governmental   user  of  the  project  financed   by  the  bond,  then  such
non-governmental user will be deemed to be the sole issuer. If, however, in  any
of  the above cases, the  state, the political subdivision  or some other entity
guarantees a security, and the value  of all securities issued or guaranteed  by
the  guarantor  and  owned  by a  Portfolio  exceeds  10% of  the  value  of the
Portfolio's total assets, the guarantee  will be considered a separate  security
and will be treated as an issue of the guarantor.
 
BORROWING.  Each Portfolio may borrow money from banks as a temporary measure to
facilitate redemptions. As  a fundamental  policy, however,  borrowings may  not
exceed  10% of  the value  of such  Portfolio's total  assets and  no additional
investment securities may  be purchased  by a Portfolio  while outstanding  bank
borrowings  exceed 5%  of the value  of such Portfolio's  total assets. Interest
paid on borrowings will not be available for investment.
 
ILLIQUID SECURITIES. Each Portfolio may invest up to 15% of the value of its net
assets in illiquid  securities. For  this purpose  illiquid securities  include,
among  others, (i) securities  that are illiquid  by virtue of  the absence of a
readily available market or  legal or contractual  restrictions on resale,  (ii)
options   purchased  over-the-counter   and  the   cover  for   options  written
over-the-counter, and (iii)  repurchase agreements not  terminable within  seven
days.  Securities  that  have been  determined  to  be liquid  by  the  Board of
Directors of the Fund, or by Advisers subject to the oversight of such Board  of
Directors,  will  not be  subject to  this  limitation. Commercial  paper issued
pursuant to the private placement exemption of Section 4(2) of the 1933 Act  and
securities  that are eligible for resale under Rule 144A under the 1933 Act that
have legal or contractual  restrictions on resale but  have a readily  available
market are not deemed illiquid securities for this purpose.
 
MANAGEMENT
 
BOARD OF DIRECTORS
 
Under  Minnesota  law,  the  Board  of Directors  of  the  Fund  (the  "Board of
Directors") has overall responsibility for managing the Fund in good faith, in a
manner reasonably believed to be in the best interests of the Fund, and with the
care an  ordinarily  prudent person  would  exercise in  similar  circumstances.
However, this management may be delegated.
 
The  Articles of Incorporation of  the Fund limit the  liability of directors to
the fullest extent permitted by law.
 
THE INVESTMENT ADVISER/TRANSFER AGENT/DIVIDEND AGENT
 
Fortis Advisers, Inc.  ("Advisers") is the  investment adviser, transfer  agent,
and  dividend agent for the Fund.  Advisers has been managing investment company
portfolios since 1949, and  is indirectly owned  50% by Fortis  AMEV and 50%  by
Fortis  AG, diversified financial  services companies. In  addition to providing
investment advice, Advisers is responsible for management of the Fund's business
affairs, subject to the overall authority  of the Board of Directors. Howard  G.
Hudson  (Executive Vice President), Robert  C. Lindberg (Vice President), Maroun
M. Hayek  (Vice  President)  and  David C.  Greenzang  (Money  Market  Portfolio
Officer)  manage the Portfolios.  Mr. Lindberg has  managed the Portfolios since
1993. Prior to 1993,  Mr. Lindberg managed bank  portfolios for COMERICA,  Inc.,
Detroit, Michigan. The other individuals have been managing the Portfolios since
August  of  1995. Messrs.  Hudson  and Hayek  have  managed debt  securities for
Fortis, Inc. since 1991 and 1987, respectively. Mr. Greenzang has been  involved
in management of debt securities for Fortis, Inc. since 1992. Prior to 1992, Mr.
Greenzang  was an  Associate with  Dean Witter Reynolds,  Inc. in  New York, NY.
Messrs. Hudson, Lindberg, Hayek and Greenzang are located at One Chase Manhattan
Plaza, New York, NY.
 
THE UNDERWRITER AND DISTRIBUTION EXPENSES
 
Fortis Investors, Inc. ("Investors"),  a subsidiary of  Advisers, is the  Fund's
underwriter.  Investors' address  is that  of the  Fund. Investors  reserves the
right to reject any  purchase order. The following  persons are affiliated  with
both Investors and the Fund: Dean C. Kopperud is a director and officer of both;
Stephen  M. Poling and Jon H. Nicholson are officers of the Funds; and Robert W.
Beltz, Jr.,  Thomas D.  Gualdoni, Tamara  L. Fagely  and Carol  M. Houghtby  are
officers  of both; Dennis  M. Ott, James  S. Byrd, Robert  C. Lindberg, Keith R.
Thomson, Rhonda J. Schwartz, Richard P. Roche, John E. Hite and Scott R. Plummer
are officers of the Fund.
 
Pursuant to a Plan of  Distribution adopted by the  Fund under Rule 12b-1  under
the  1940 Act, the Fund is  obligated to pay Investors an  annual fee of .25% of
average net  assets attributable  to the  Fund's  Class A  shares and  1.00%  of
average  net assets attributable to Class B, H, and C shares. While all of Class
A's Rule 12b-1 fee constitutes a "distribution fee", only 75% of Class B, H, and
C's fees constitute distribution fees.
 
The higher distribution fee attributable to Class B, H, and C shares is designed
to permit an investor to purchase such shares through registered representatives
of Investors and other broker-dealers without the assessment of an initial sales
charge and at  the same time  to permit Investors  to compensate its  registered
representatives  and other  broker-dealers in connection  with the  sale of such
shares. The distribution fee for  all classes may be  used by Investors for  the
purpose  of financing any activity which is  primarily intended to result in the
sale of shares of the  Fund. For example, such distribution  fee may be used  by
Investors:  (a)  to  compensate  broker-dealers,  including  Investors  and  its
registered representatives, for their sale
 
                                       10
<PAGE>
of Fund shares, including the implementation of various incentive programs  with
respect  to broker-dealers, banks, and other  financial institutions, and (b) to
pay  other  advertising  and  promotional   expenses  in  connection  with   the
distribution of Fund shares. These advertising and promotional expenses include,
by  way of example but not by way of limitation, costs of prospectuses for other
than current  shareholders; preparation  and distribution  of sales  literature;
advertising  of  any  type;  expenses  of  branch  offices  provided  jointly by
Investors and  affiliated  insurance companies;  and  compensation paid  to  and
expenses  incurred by officers, employees or  representatives of Investors or of
other broker-dealers, banks, or other financial institutions, including  travel,
entertainment, and telephone expenses.
 
A  portion of the Rule 12b-1 fee equal to  .25% of the average net assets of the
Fund attributable to  the Class B,  H, and C  shares, constitutes a  shareholder
servicing  fee designed  to compensate  Investors for  the provision  of certain
services to shareholders.  The services provided  may include personal  services
provided  to shareholders, such as answering shareholder inquiries regarding the
Funds and providing reports and other  information, and services related to  the
maintenance  of shareholder  accounts. Investors may  use the Rule  12b-1 fee to
make payments  to  qualifying  broker-dealers and  financial  institutions  that
provide such services.
 
Investors  may  also  enter  into sales  or  servicing  agreements  with certain
institutions such as banks ("Service Organizations") which have purchased shares
of the Fund for the  accounts of their clients, or  which have made Fund  shares
available for purchase by their clients, and/or which provide continuing service
to  such  clients. The  Glass-Steagall Act  and  other applicable  laws prohibit
certain banks from engaging in the business of underwriting securities. In  such
circumstances,  Investors, if  so requested, will  engage such  banks as Service
Organizations  only  to   perform  administrative   and  shareholder   servicing
functions,  but at the  same fees and  other terms applicable  to dealers. (If a
bank  were  later  prohibited  from  acting  as  a  Service  Organization,   its
shareholder   clients  would  be  permitted  to  remain  Fund  shareholders  and
alternative means  for  continuing  servicing  of  such  shareholders  would  be
sought.)  In such event, changes in the operation  of the Fund might occur and a
shareholder serviced by such bank might no longer be able to avail itself of any
automatic investment or other services then  being provided by the Bank.  (State
securities laws on this issue may differ from the interpretations of Federal law
expressed  above and banks  and other financial institutions  may be required to
register as dealers pursuant to state law.)
 
FUND EXPENSES
 
For the  most  recent fiscal  year,  the ratio  of  the Funds'  total  operating
expenses  (including  the  distribution  fees  and  shareholder  servicing  fees
referred to under "Distribution Expenses"),  and their advisory fees (which  are
included in operating expenses) both as a percentage of average daily net assets
were as follows:
 
<TABLE>
<CAPTION>
                                                 TOTAL OPERATING EXPENSES
                                 --------------------------------------------------------
                                                 CLASSES B,                    ADVISORY
                                   CLASS A         H, & C        CLASS E         FEE
                                 ------------  --------------  ------------  ------------
<S>                              <C>           <C>             <C>           <C>
National Portfolio.............        1.18%          1.93%           .93%          .77%
Minnesota Portfolio............        1.18%          1.93%           .93%          .72%
</TABLE>
 
BROKERAGE ALLOCATION
 
Advisers may consider sales of shares of the Fund, and of other funds advised by
Advisers,  as  a  factor in  the  selection  of broker-dealers  to  execute Fund
securities transactions  when it  is  believed that  this  can be  done  without
causing the Fund to pay more in brokerage commissions than it would otherwise.
 
VALUATION OF SECURITIES
 
The  Portfolios' net asset values per share are determined by dividing the value
of the securities owned by each Portfolio,  plus any cash or other assets,  less
all  liabilities,  by  the  number  of  the  Portfolio  shares  outstanding. The
portfolio securities  in which  the Portfolio  invests fluctuate  in value,  and
hence  the net asset values per share  of the Portfolios also fluctuate. The net
asset value of the  Portfolios' shares is determined  as of the primary  closing
time for business on the New York Stock Exchange (the "Exchange") on each day on
which  the Exchange  is open.  If shares  are purchased  through another broker-
dealer who receives the order prior to the close of the Exchange, then Investors
will apply that day's price to the order as long as the broker-dealer places the
order with Investors by the end of the day.
 
Securities  are  generally  valued  at   market  value.  Securities  for   which
over-the-counter market quotations are readily available are valued on the basis
of  the last current  bid price. An  outside pricing service  may be utilized to
provide valuations of debt securities. The pricing service may employ electronic
data processing techniques and/or a matrix system to determine valuations  using
methods  which include consideration of yields  or prices of bonds of comparable
quality, type of  issue, coupon, maturity  and rating; indications  as to  value
from  dealers; and  general market  conditions. When  market quotations  are not
readily available,  or when  restricted  securities or  other assets  are  being
valued,  such securities or other assets are  valued at fair value as determined
in good  faith  by management  under  supervision  of the  Board  of  Directors.
Short-term  investments in debt securities with  maturities of less than 60 days
when acquired, or which subsequently are within 60 days of maturity, are  valued
at  amortized cost. Purchases and sales by the Fund after 2:00 P.M. Central Time
normally are not recorded until the following day.
 
CAPITAL STOCK
 
Each Portfolio's  shares  constitute  separate series  of  common  shares.  Each
Portfolio currently offers its shares in five classes, each with different sales
arrangements and bearing differing expenses. Class A, B, H, C, and E shares each
represent  interests  in  the  assets  of  the  respective  Portfolios  and have
identical voting, dividend, liquidation, and other rights on the same terms  and
conditions except that
 
                                       11
<PAGE>
expenses  related to  the distribution  of each class  are borne  solely by such
class and  each class  of shares  has exclusive  voting rights  with respect  to
provisions  of the  Fund's Rule  12b-1 distribution  plan which  pertain to that
particular  class  and  other  matters  for  which  separate  class  voting   is
appropriate under applicable law. Each Portfolio may offer additional classes of
shares.
 
DIVIDENDS AND CAPITAL GAINS DISTRIBUTIONS
 
Each  Portfolio currently declares dividends from  net investment income on each
day the Exchange is  open (to shareholders  of record as  of 3:00 p.m.,  Central
Time, the preceding business day) and pays dividends monthly. A shareholder will
not  be  credited with  a dividend  until  payment is  received for  the shares.
Distributions of net  realized capital  gains are  made annually.  Distributions
paid  by a Portfolio with respect to all classes of shares will be calculated in
the same manner, at  the same time,  on the same  day, and will  be in the  same
amount,  except that the per share dividends on Class B, H, and C shares will be
lower than those on Class A shares (which have lower Rule 12b-1 fees) and  Class
E  shares (which do not have Rule 12b-1 fees and will therefore have the highest
dividends).
 
Such dividends  and capital  gains distributions  will be  made in  the form  of
additional  shares of the same class of  the same Portfolio (at net asset value)
unless the shareholder sends the Fund a  written request that either or both  be
sent to the shareholder or reinvested (at net asset value) in shares of the same
class of another Portfolio or Fortis fund.
 
Dividends will be reinvested monthly, on the last business day of each month, at
the  net asset value on that date. If  they are to be reinvested in other Fortis
funds, processing normally takes up to three business days.
 
TAXATION
 
FEDERAL INCOME TAXATION
 
Each Portfolio intends to pay at least 90% of its dividends as  "exempt-interest
dividends."  Distributions by a mutual fund meeting applicable Code requirements
are subject to the following Federal tax treatment:
 
Distributions of  net  interest  income from  tax-exempt  obligations  that  are
designated  by  a Portfolio  as  exempt-interest dividends  are  excludable from
shareholders' gross  income. Each  Portfolio's present  policy is  to  designate
exempt-interest  dividends annually.  Shareholders are  required for information
purposes to report  exempt-interest dividends and  other tax-exempt interest  on
their tax returns.
 
Distributions  of net long-term  capital gains, designated  in the shareholder's
Annual Account Summary as long-term  capital gain distributions, are taxable  to
shareholders  as long-term  capital gains,  regardless of  the length  of time a
shareholder has held his or  her shares or whether  such gains were realized  by
the  Portfolio before the shareholder acquired such shares and were reflected in
the price paid for the shares.
 
Since none of the  Portfolios' income will consist  of corporate dividends,  the
70%  dividends received  deduction for  corporations will  not be  applicable to
taxable distributions by the Portfolios.
 
Exempt-interest dividends attributable to interest income on certain  tax-exempt
obligations  issued after August 7, 1986,  to finance certain private activities
will be treated as  an item of  tax preference that  is included in  alternative
minimum taxable income for purposes of computing the Federal alternative minimum
tax for all taxpayers and the Federal environmental tax on corporations. Neither
Portfolio  will  invest more  than  20% of  its  net assets  in  obligations the
interest on which is treated  as an item of  tax preference. However, all  other
tax-exempt  interest received by a corporation  will be included in earnings and
profits and adjusted current  earnings for purposes  of determining the  Federal
corporate   alternative  minimum  tax  and  the  environmental  tax  imposed  on
corporations by Section 59A of the Code.
 
Tax-exempt interest, including exempt-interest dividends paid by the  Portfolio,
is  taken  into account  in computing  the "modified  adjusted gross  income" of
individuals for  purposes of  determining  the portion  of social  security  and
railroad  retirement benefits that are subject to Federal income tax. In certain
limited circumstances, the portion of such  benefits that may be subject to  tax
is 85%.
 
Any  loss on the sale or exchange of  shares held for 6 months or less (although
regulations may reduce  this time  to 31 days)  will be  disallowed for  Federal
income  tax purposes to the extent of the amount of any exempt-interest dividend
received with respect to such shares.
 
The Tax Reform Act of 1986 imposed new requirements on certain Tax Exempt  Bonds
which,  if not satisfied, could result in  loss of tax exemption for interest on
such bonds, even retroactively to the  date of issuance of the bonds.  Proposals
may be introduced before Congress in the future, the purpose of which will be to
further  restrict or eliminate  the Federal income tax  exemption for Tax Exempt
Bonds. The Fund cannot predict what  additional legislation may be enacted  that
may  affect shareholders. The Fund will avoid  investment in bonds which, in the
opinion of Advisers, pose a material risk of the loss of tax exemption. Further,
if a bond in one of the  Portfolios lost its exempt status, Advisers would  make
every  effort  to  dispose  of it  on  terms  that are  not  detrimental  to the
Portfolio.
 
MINNESOTA INCOME TAXATION
 
The portion of exempt-interest dividends that is derived from interest income on
Minnesota Tax  Exempt Bonds  by the  Minnesota Portfolio  is excluded  from  the
Minnesota  gross income of  individuals, estates, and  trusts, provided that the
portion of the exempt-interest dividends from such Minnesota sources paid to all
shareholders represents 95 percent or more of the exempt-interest dividends paid
by such  Portfolio.  All remaining  dividends  (except for  dividends,  if  any,
derived  from interest  on obligations  of the United  States or  certain of its
territories or possessions), including capital  gain dividends, are included  in
the Minnesota gross income of individuals, estates, and
 
                                       12
<PAGE>
trusts.  Exempt-interest  dividends are  not excluded  from the  Minnesota gross
income of corporations and financial institutions. Dividends paid from long-term
capital gains (and  designated as  such) are to  be treated  by shareholders  as
long-term  capital gains under Minnesota law. However, Minnesota currently taxes
long-term capital gains at  the same rates as  ordinary income, while  retaining
restrictions on the deductibility of capital losses.
 
Exempt-interest  dividends attributable to interest  on certain private activity
bonds issued after  August 7, 1986,  will be included  in Minnesota  alternative
minimum  taxable  income of  individuals, estates,  and  trusts for  purposes of
computing Minnesota's  alternative minimum  tax.  Dividends generally  will  not
qualify  for  the dividends-received  deduction  for corporations  and financial
institutions.
The 1995 Minnesota Legislature  enacted a statement of  intent that interest  on
obligations of Minnesota governmental units and Indian tribes be included in net
income of individuals, estates and trusts for Minnesota income tax purposes if a
court   determines  that  Minnesota's  exemption  of  such  interest  unlawfully
discriminates against  interstate commerce  because interest  on obligations  of
governmental  issuers located  in other  states is  so included.  This provision
applies to taxable years that begin during  or after the calendar year in  which
any  such court decision  becomes final, irrespective  of the date  on which the
obligations were issued. The Fund is not aware of any decision in which a  court
has  held that a state's exemption of interest  on its own bonds or those of its
political subdivisions or  Indian tribes, but  not of interest  on the bonds  of
other  states  or  their  political subdivisions  or  Indian  tribes, unlawfully
discriminates against interstate  commerce or otherwise  contravenes the  United
States  Constitution. Nevertheless, the Fund  cannot predict the likelihood that
interest on the Minnesota bonds held by the Fund would become taxable under this
Minnesota statutory provision.
 
HOW TO BUY FUND SHARES
 
GENERAL PURCHASE INFORMATION
 
MINIMUM AND MAXIMUM INVESTMENTS
 
A minimum initial investment of $500 normally is required. An exception to  this
minimum (except on telephone or wire orders) is the "Systematic Investment Plan"
($25  per month  by "Pre-authorized Check  Plan" or  $50 per month  on any other
basis). The minimum subsequent investment normally is $50, again subject to  the
above exceptions.
 
While  Class A and E shares  have no maximum order, Class  B and H shares have a
$500,000 maximum and Class  C shares have a  $1,000,000 maximum. Orders  greater
than these limits will be treated as orders for Class A shares.
 
INVESTING BY TELEPHONE
 
Your  registered  representative  may  make  your  purchase  ($500  minimum)  by
telephoning the number on the cover  page of this Prospectus. In addition,  your
check  and the  Account Application  which accompanies  this Prospectus  must be
promptly forwarded, so that Investors receives your check within three  business
days.  Please make your check payable to Fortis Investors, Inc. and mail it with
your Application "CM-9651, St. Paul, MN 55170-9651." If you have a bank  account
authorization  form on file, you may  purchase $100-$10,000 worth of Fund shares
via telephone through the automated Fortis Information Line.
 
INVESTING BY WIRE
 
A shareholder having an account with a  commercial bank that is a member of  the
Federal  Reserve System may  purchase shares ($500  minimum) by requesting their
banks to transmit immediately available funds (Federal Funds) by wire to:
 
First Bank National Association
ABA #091000022, credit account no: 1-702-2514-1341
Fortis Funds Purchase Account
For further credit to __________________________________________________________
                                        (name of client)
Fortis Account NBR _____________________________________________________________
 
Before making  an initial  investment  by wire,  your broker-dealer  must  first
telephone  Investors at the number on the  cover page of this Prospectus to open
your  account  and  obtain  your  account  number.  In  addition,  the   Account
Application  which  accompanies this  Prospectus must  be promptly  forwarded to
Investors at the  mailing address  in the "Investing  by Mail"  section of  this
Prospectus.  Additional investments may be made at  any time by having your bank
wire Federal  Funds  to the  above  address for  credit  to your  account.  Such
investments may be made by wire even if the initial investment was by mail.
 
INVESTING BY MAIL (ADDRESS: CM-9614, ST. PAUL, MN 55170-9614)
 
The  Account Application  which accompanies  this Prospectus  must be completed,
signed, and sent with a check or other negotiable bank draft, payable to "Fortis
Funds." Additional purchases may be made at any time by mailing a check or other
negotiable bank draft along  with your confirmation stub.  The account to  which
the subsequent purchase is to be credited should be identified as to the name(s)
of the registered owner(s) and by account number.
 
ALTERNATIVE PURCHASE ARRANGEMENTS
 
The  Portfolios each offer  investors the choice between  five classes of shares
which  offer  differing  sales  charges  and  bear  different  expenses.   These
alternatives  permit  an  investor  to  choose  the  more  beneficial  method of
purchasing shares  given the  amount of  the purchase,  the length  of time  the
investor  expects to hold the shares,  and other circumstances. The inside front
cover of  the  Prospectus  contains  a summary  of  these  alternative  purchase
arrangements.  A  broker-dealer  may receive  different  levels  of compensation
depending on  which  class  of  shares  is  sold.  Investors  may  also  provide
additional  cash  compensation to  dealers,  and the  dealers  may use  the cash
compensation  for   their  own   company-sponsored  sales   programs.   Non-cash
compensation  will be provided to dealers  and includes payment or reimbursement
for educational and training conferences  or programs for their employees.  None
of  the aforementioned additional  compensation is paid  for by the  Fund or its
shareholders.
 
                                       13
<PAGE>
CLASS A AND E SHARES--INITIAL SALES CHARGE ALTERNATIVE
 
(Note: Class E shares are only  available to investors who were shareholders  on
November 13, 1994.)
 
The  public offering price of Class A  and E Portfolio shares is determined once
daily, by adding a sales charge to the  net asset value per share of the  shares
next  calculated  after receipt  of the  purchase order.  The sales  charges and
broker-dealer concessions, which vary with the  size of the purchase, are  shown
in  the  following  table. Additional  compensation  (as a  percentage  of sales
charge) will be paid to  a broker-dealer when its  annual sales of Fortis  funds
having a sales charge exceed $10,000,000 (2%), $25,000,000 (4%), and $50,000,000
(5%).
 
<TABLE>
<CAPTION>
                                          SALES CHARGE   SALES CHARGE
                                               AS             AS
                                           PERCENTAGE     PERCENTAGE
                                             OF THE       OF THE NET     BROKER-
                                            OFFERING        AMOUNT        DEALER
AMOUNT OF SALE                               PRICE         INVESTED     CONCESSION
<S>                                       <C>            <C>            <C>
Less than $100,000......................     4.500%         4.712%         4.00%
$100,000 but less than $250,000.........     3.500%         3.627%         3.00%
$250,000 but less than $500,000.........     2.500%         2.564%         2.25%
$500,000 but less than $1,000,000.......     2.000%         2.041%         1.75%
$1,000,000 or more*.....................    -0-            -0-             1.00%
</TABLE>
 
- ------------------------
* The Fund imposes a contingent deferred sales charge in connection with certain
  purchases   of   Class  A   and   E  shares   of   $1,000,000  or   more.  See
  "Redemption--Contingent Deferred Sales Charge."
 
The above scale applies to purchases of Class A and E shares by the following:
 
    (1) Any individual, his or her spouse,  and their children under the age  of
    21, and any of such persons' tax-qualified plans (provided there is only one
    participant);
 
    (2)  A trustee  or fiduciary  of a single  trust estate  or single fiduciary
    account; and
 
    (3) Any  organized group  which has  been  in existence  for more  than  six
    months,  provided  that  it  is  not organized  for  the  purpose  of buying
    redeemable securities of a registered investment company, and provided  that
    the  purchase is made  by means which  result in economy  of sales effort or
    expense, whether  the purchase  is made  through a  central  administration,
    through  a single broker-dealer, or by  other means. An organized group does
    not include a group of  individuals whose sole organizational connection  is
    participation  as  credit  cardholders  of a  company,  policyholders  of an
    insurance company, customers of either  a bank or broker-dealer, or  clients
    of an investment adviser.
 
SPECIAL PURCHASE PLANS FOR CLASS A AND E SHARES
 
For  information  on any  of the  following special  purchase or  exchange plans
applicable to Class A and E shares, see the Statement of Additional  Information
or  contact your  broker-dealer or sales  representative. It  is the purchaser's
obligation to notify his or her broker-dealer or sales representative about  the
purchaser's  eligibility for any  of the following  special purchase or exchange
plans. Any plan involving systematic purchases may, at Advisers' option,  result
in  transactions  under such  plan being  confirmed  to the  investor quarterly,
rather than as a separate notice following the transaction.
 
RIGHT OF ACCUMULATION The preceding table's sales charge discount applies to the
current purchase  plus  the  cost  of shares  already  owned  (excluding  shares
purchased by reinvesting dividends or capital gains distributions) of any Fortis
fund having a sales charge.
 
STATEMENT OF INTENTION The preceding table's sales charge discount applies to an
initial  purchase of at least $1,000, with  an intention to purchase the balance
needed to qualify  within 13 months--excluding  shares purchased by  reinvesting
dividends or capital gains;
 
REINVESTED    DIVIDEND/CAPITAL   GAINS   DISTRIBUTIONS    BETWEEN   THE   FORTIS
FUNDS Shareholders of any Portfolio or  fund may reinvest their dividend  and/or
capital  gains distributions  in any  of such Portfolios  or funds  at net asset
value.
 
CONVERSION FROM CLASS B OR H SHARES  Class B and H shares will automatically  be
converted  to Class A  shares (at net  asset value) at  the end of  the month in
which the ninth anniversary of their purchase occurs.
 
EXEMPTIONS FROM SALES CHARGE
 
    - Fortis, Inc. or its subsidiaries, and the following persons associated
      with such companies, if all  account owners fit this description:  (1)
      officers   and  directors;  (2)  employees  or  sales  representatives
      (including agencies  and their  employees); (3)  spouses of  any  such
      persons; or (4) any of such persons' children, grandchildren, parents,
      grandparents,  or siblings--or spouses  of any of  these persons. (All
      such persons may  continue to add  to their account  even after  their
      company relationships have ended);
 
    - Fund directors, officers, or their spouses (or such persons' children,
      grandchildren,  parents,  or  grandparents--or  spouses  of  any  such
      persons), if all account owners fit this description;
 
    - Representatives  or  employees   (or  their   spouses)  of   Investors
      (including  agencies)  or  of  other  broker-dealers  having  a  sales
      agreement with Investors  (or such  persons' children,  grandchildren,
      parents,  or  grandparents--or spouses  of any  such persons),  if all
      account owners fit this description;
 
    - Registered investment companies;
 
    - Shareholders of unrelated mutual funds with front-end and/or  deferred
      sales  loads, to the extent that  the purchase price of such Portfolio
      shares is funded by the proceeds from the redemption of shares of  any
      such  unrelated  mutual  fund  (within  60  days  of  the  purchase of
      Portfolio shares),  provided  that the  shareholder's  application  so
      specifies  and is accompanied  either by the  redemption check of such
      unrelated mutual  fund (or  a copy  of the  check) or  a copy  of  the
      confirmation
 
                                       14
<PAGE>
      statement showing the redemption. Similarly, anyone who is or has been
      the  owner of a fixed annuity contract not deemed a security under the
      securities laws who wishes to  surrender such contract and invest  the
      proceeds in a Portfolio, to the extent that the purchase price of such
      Portfolio  shares is funded by the  proceeds from the surrender of the
      contract (within  60  days  of  the  purchase  of  Portfolio  shares),
      provided that such owner's application so specifies and is accompanied
      either  by the insurance company's check (or a copy of the check) or a
      copy of  the insurance  company  surrender form.  From time  to  time,
      Investors   may  pay  commissions  to  broker-dealers  and  registered
      representatives  on  transfers  from  mutual  funds  or  annuities  as
      described above;
 
    - Purchases   by  employees  (including   their  spouses  and  dependent
      children) of  banks  and  other financial  institutions  that  provide
      referral  and administrative  services related to  order placement and
      payment to facilitate  transactions in  shares of  the Portfolios  for
      their  clients  pursuant  to  a  sales  or  servicing  agreement  with
      Investors; provided, however, that only those employees of such  banks
      and  other firms  who as  a part  of their  usual duties  provide such
      services related  to  such  transactions  in  Portfolio  shares  shall
      qualify.
 
    - Registered  investment  advisers,  trust  companies,  and  bank  trust
      departments exercising discretionary investment  authority or using  a
      money  management/mutual fund "wrap" program with respect to the money
      to be invested in a  Portfolio, provided that the investment  adviser,
      trust  company or trust department  provides Advisers with evidence of
      such authority or the existence of such a wrap program with respect to
      the money invested.
 
RULE 12b-1 FEES (FOR CLASS A SHARES ONLY)
 
Class A shares are subject to a Rule 12b-1 fee payable at an annual rate of .25%
of the average daily  net assets of the  Portfolio attributable to such  shares.
The  Rule 12b-1 fee will cause Class A shares to have a higher expense ratio and
to pay lower  dividends than  Class E  shares. For  additional information,  see
"Management--The Underwriter and Distribution Expenses."
 
DEFERRED SALES CHARGES Although there is no initial sales charge on purchases of
Class A and E shares of $1,000,000 or more, Investors pays broker-dealers out of
its  own assets,  a fee of  1% of  the offering price  of such  shares. If these
shares are redeemed within two years, the redemption proceeds will be reduced by
1%. For  additional  information,  see  "Redemption--Contingent  Deferred  Sales
Charge."
 
CLASS B AND H SHARES--CONTINGENT DEFERRED SALES CHARGE ALTERNATIVES
 
The  public offering price of Class B and H shares is the net asset value of the
Portfolio's shares. Such shares are sold without an initial sales charge so that
the Fund  receives  the full  amount  of  the investor's  purchase.  However,  a
contingent  deferred sales charge ("CDSC")  of 4% will be  imposed if shares are
redeemed  within  two  years  of  purchase,  with  lower  CDSCs  as  follows  if
redemptions occur later:
 
<TABLE>
<S>       <C>  <C>
3 years   --    3%
4 years   --    3%
5 years   --    2%
6 years   --    1%
</TABLE>
 
For  additional information, see "Redemption--Contingent Deferred Sales Charge."
In addition, Class B and H shares  are subject to higher annual Rule 12b-1  fees
as described below.
 
Proceeds from the CDSC are paid to Investors and are used to defray its expenses
related  to providing  distribution-related services  to the  Fund in connection
with the sale of Class  B and H shares, such  as the payment of compensation  to
selected  broker-dealers, and  for selling such  shares. The  combination of the
CDSC and  the Rule  12b-1  fee enables  the Fund  to  sell such  shares  without
deduction  of a sales charge  at the time of  purchase. Although such shares are
sold without an initial sales charge,  Investors pays a dealer concession  equal
to:  (1) 4.00% of the amount invested  to broker-dealers who sell Class B shares
at the time the shares are sold and  an annual fee of .25% of the average  daily
net  assets of the  Portfolio attributable to  such shares; or  (2) 5.25% of the
amount invested to broker-dealers who sell Class H shares at the time the shares
are sold (with  no annual fee).  Under alternative  (2), from time  to time  the
dealer  concession  paid  to  broker-dealers  who sell  Class  H  shares  may be
increased up to 5.50%.
 
RULE 12b-1 FEES Class B and H shares are subject to a Rule 12b-1 fee payable  at
an annual rate of 1.00% of the average daily net assets of the Fund attributable
to  such shares. The  higher Rule 12b-1 fee  will cause Class B  and H shares to
have a  higher expense  ratio and  to pay  lower dividends  than Class  A and  E
shares.   For  additional  information  about  this  fee,  see  "Management--The
Underwriter and Distribution Expenses."
 
CONVERSION TO CLASS A SHARES Class B and H shares (except for those purchased by
reinvestment of dividends and other distributions) will automatically convert to
Class A shares after eight years. Each time any such shares in the shareholder's
account convert to Class A, a proportionate  amount of the Class B and H  shares
purchased  through the reinvestment of dividends and other distributions paid on
such shares will also convert to Class A.
 
CLASS C SHARES--LEVEL SALES CHARGE ALTERNATIVE
 
The public offering  price of  Class C  shares is the  net asset  value of  such
shares. Class C shares are sold without an initial sales charge so that the Fund
receives  the full amount of the investor's purchase. However, a CDSC of 1% will
be imposed if shares  are redeemed within one  year of purchase. For  additional
information,  see "Redemption--Contingent  Deferred Sales  Charge." In addition,
Class C shares are subject to higher annual Rule 12b-1 fees as described below.
 
                                       15
<PAGE>
Proceeds from the CDSC are paid to Investors and are used to defray its expenses
related to providing  distribution-related services  to the  Fund in  connection
with the sale of Class C shares, such as the payment of compensation to selected
broker-dealers,  and for selling Class C shares. The combination of the CDSC and
the Rule 12b-1 fee enables the Fund to sell the Class C shares without deduction
of a sales  charge at the  time of purchase.  Although Class C  shares are  sold
without  an initial  sales charge,  Investors pays  a sales  commission equal to
1.00% of the amount invested  to broker-dealers who sell  Class C shares at  the
time  the shares are sold and an annual fee of 1.00% of the amount invested that
begins to accrue one year after the shares are sold.
 
RULE 12b-1 FEES Class  C shares are subject  to a Rule 12b-1  fee payable at  an
annual  rate  of  1.00%  of  the  average  daily  net  assets  of  the Portfolio
attributable to such shares. The higher Rule 12b-1 fee will cause Class C shares
to have a higher  expense ratio and to  pay lower dividends than  Class A and  E
shares.   For  additional  information  about  this  fee,  see  "Management--The
Underwriter and Distribution Expenses."
 
SPECIAL PURCHASE PLANS FOR ALL CLASSES
 
GIFTS OR TRANSFERS  TO MINOR  CHILDREN Adults can  make an  irrevocable gift  or
transfer of up to $10,000 annually per child ($20,000 for married couples) to as
many children as they choose without having to file a Federal gift tax return.
 
SYSTEMATIC  INVESTMENT  PLAN  Voluntary  $25  or  more  per  month  purchases by
automatic financial institution  transfers (see ACH  Authorization Agreement  in
this  Prospectus) or $50 or more per month by any other means enable an investor
to lower his or her average cost per share through the principle of "dollar cost
averaging;"
 
EXCHANGE PRIVILEGE Except for Class E shares, Portfolio shares may be  exchanged
among  other Portfolios or funds  of the same class  managed by Advisers without
payment of an exchange fee  or additional sales charge. Similarly,  shareholders
of other Fortis funds may exchange their shares for Portfolio shares of the same
class  (at net asset value if the shares to be exchanged have already incurred a
sales charge). Also, holders of Class E shares of other Fortis funds that have a
front-end sales charge may  exchange their shares for  Class A Portfolio  shares
and  holders of Fortis Money  Fund Class A shares  may exchange their shares for
any class of Portfolio shares (at net asset value and only into Class A, if  the
shares  have already  incurred a  sales charge).  Finally, holders  of Portfolio
Class E shares who exchange such shares for Class A shares of another  Portfolio
or  other Fortis fund may re-exchange such  Class A shares for Portfolio Class E
shares. A shareholder initiates an exchange by writing to or telephoning his  or
her  broker-dealer, sales representative, or the Fund regarding the shares to be
exchanged. Telephone  exchanges  will  be  permitted  only  if  the  shareholder
completes and returns the Telephone Exchange section of the Account Application.
During times of chaotic economic or market circumstances, a shareholder may have
difficulty  reaching his or her broker-dealer, sales representative, or the Fund
by telephone. Consequently, a telephone  exchange may be difficult to  implement
at those times. (See "Redemption".)
 
Advisers  reserves the right to restrict  the frequency of--or otherwise modify,
condition, terminate,  or impose  charges  upon--the exchange  and/or  telephone
transfer privileges, all with 30 days notice to shareholders.
 
REDEMPTION
 
Registered  holders of  Fund shares may  redeem their shares  without any charge
(except any applicable contingent  deferred sales charge) at  the per share  net
asset  value  next  determined  following  receipt  by  the  Fund  of  a written
redemption request in proper form (and a properly endorsed stock certificate  if
one   has  been  issued).  However,  if  shares  are  redeemed  through  another
broker-dealer who receives the  order prior to the  close of the Exchange,  then
Investors  will apply that day's price to the order as long as the broker-dealer
places the order with Investors by the  end of the day. Some broker-dealers  may
charge a fee to process redemptions.
 
Any   certificates  should  be  sent  to  the  Fund  by  certified  mail.  Share
certificates and/or  stock  powers,  if  any, tendered  in  redemption  must  be
endorsed  and  executed  exactly  as  the Fund  shares  are  registered.  If the
redemption proceeds are  to be paid  to the  registered holder and  sent to  the
address  of record, normally no signature  guarantee is required unless Advisers
does not have the  shareholder's signature on file  and the redemption  proceeds
are  greater than $25,000. However, for  example, if the redemption proceeds are
to be paid  to someone other  than the  registered holder, sent  to a  different
address,  or the  shares are  to be transferred,  the owner's  signature must be
guaranteed by  a  bank,  broker  (including  government  or  municipal),  dealer
(including government or municipal), credit union, national securities exchange,
registered securities association, clearing agency, or savings association.
 
Class A shares may be registered in broker-dealer "street name accounts" only if
the  broker-dealer  has  a  selling agreement  with  Investors.  In  such cases,
instructions from the broker-dealer  are required to  redeem shares or  transfer
ownership  and transfer to another  broker-dealer requires the new broker-dealer
to  also  have  a  selling  agreement  with  Investors.  If  the  proposed   new
broker-dealer  does not have a selling agreement with Investors, the shareholder
can leave  the  shares  under the  original  street  name account  or  have  the
broker-dealer transfer ownership to the shareholder's name.
 
Broker-dealers  having  a  sales agreement  with  Investors may  orally  place a
redemption order,  but  proceeds will  not  be released  until  the  appropriate
written materials are received.
 
An  individual shareholder (or in the  case of multiple owners, any shareholder)
may orally redeem up to $25,000 worth of their shares, provided that the account
is not a tax-qualified plan,  the check will be sent  to the address of  record,
and  the address of record has not changed for at least 30 days. During times of
chaotic economic  or market  circumstances, a  shareholder may  have  difficulty
reaching  his  or  her  broker-dealer,  sales  representative,  or  the  Fund by
telephone. Consequently, a telephone redemption may be difficult to implement at
those times. If a shareholder is unable to reach the Fund by telephone,  written
instructions should be sent. Advisers
 
                                       16
<PAGE>
reserves  the right to modify, condition, terminate, or impose charges upon this
telephone redemption privilege, with 30  days notice to shareholders.  Advisers,
Investors,  and the Fund will  not be responsible for,  and the shareholder will
bear  the  risk   of  loss   from,  oral   instructions,  including   fraudulent
instructions,  which  are  reasonably  believed  to  be  genuine.  The telephone
redemption procedure is automatically available  to shareholders. The Fund  will
employ reasonable procedures to confirm that telephone instructions are genuine,
but  if such  procedures are  not deemed  reasonable, it  may be  liable for any
losses due to unauthorized or fraudulent instructions. The Fund's procedures are
to verify address and  social security number, tape  record the telephone  call,
and provide written confirmation of the transaction.
 
Payment  will be made as  soon as possible, but not  later than three days after
receipt of  a proper  redemption  request. However,  if  shares subject  to  the
redemption  request  were recently  purchased  with non-guaranteed  funds (e.g.,
personal check), the mailing of your redemption check may be delayed by  fifteen
days.  A  shareholder wishing  to avoid  these delays  should consider  the wire
purchase method described under "How to Buy Fund Shares."
 
The Fund has the right to redeem accounts with a current value of less than $500
unless the  original purchase  price of  the remaining  shares (including  sales
commissions)  was at least $500. Fund shareholders actively participating in the
Fund's Systematic Investment Plan or  Group Systematic Investment Plan will  not
have their accounts redeemed. Before redeeming an account, the Fund will mail to
the  shareholder  a notice  of  its intention  to  redeem, which  will  give the
shareholder an opportunity to  make an additional  investment. If no  additional
investment  is received by  the Fund within 60  days of the  date the notice was
mailed, the shareholder's account will be redeemed. Any redemption in an account
established with  the  minimum  initial  investment of  $500  may  trigger  this
redemption procedure.
 
The  Fund  has  a "Systematic  Withdrawal  Plan," which  provides  for voluntary
automatic withdrawals of at least $50 per quarter, semiannually, or annually  or
$50 per month. Deferred sales charges may apply to monthly redemptions.
 
There  is also  a "Reinvestment Privilege,"  which is a  one-time opportunity to
reinvest sums redeemed within the prior 60 days without payment of an additional
sales  charge.  For  further  information   about  these  plans,  contact   your
broker-dealer or sales representative.
 
CONTINGENT DEFERRED SALES CHARGE
 
CLASS A AND E SHARES
 
The  Fund imposes a contingent  deferred sales charge ("CDSC")  on Class A and E
shares in certain circumstances. Under the CDSC arrangement, for sales of shares
of $1,000,000  or  more  (including  right of  accumulation  and  statements  of
intention (see "How to Buy Fund Shares--Special Purchase Plans")), the front-end
sales  charge ("FESC"), will no longer be imposed (although Investors intends to
pay its registered representatives and other dealers that sell Fund shares,  out
of  its own assets, a fee of up to 1% of the offering price of such sales except
on purchases exempt from the FESC). However, if such shares are redeemed  within
two years after their purchase date (the "CDSC Period"), the redemption proceeds
will be reduced by the 1.00% CDSC.
 
The  CDSC will be  applied to the  lesser of (a)  the net asset  value of shares
subject to the CDSC at the time of purchase, or (b) the net asset value of  such
shares  at  the  time  of  redemption. No  charge  will  be  imposed  on amounts
representing an increase in  share value due to  capital appreciation. The  CDSC
will  not be applied to shares acquired through reinvestment of income dividends
or capital gain distributions or shares held for longer than the applicable CDSC
Period. In  determining which  shares to  redeem, unless  instructed  otherwise,
shares  that are not subject to the CDSC and having a higher Rule 12b-1 fee will
be redeemed first, shares not subject to the CDSC having a lower Rule 12b-1  fee
will  be redeemed next, and shares subject to  the CDSC then will be redeemed in
the order purchased.
 
The Fund  will  waive the  CDSC  in the  event  of the  shareholder's  death  or
disability, as defined in Section 72(m)(7) of the Code (if satisfactory evidence
is provided to the Fund) and for tax-qualified retirement plans (excluding IRAs,
SEPS,  403(b) plans, and 457 plans) and each class of transaction that qualifies
for exemption from the Fund FESC (see "How to Buy Fund Shares--Special  Purchase
Plans").  Shares of the Fund that are acquired in exchange for shares of another
Fortis fund that were  subject to a  CDSC will remain subject  to the CDSC  that
applied  to the shares of the other Fortis fund. Additionally, the CDSC will not
be imposed at the time  that Fund shares subject to  the CDSC are exchanged  for
shares  of Fortis Money  Fund or at the  time such Fortis  Money Fund shares are
reexchanged for shares of any Fortis fund subject to a CDSC; provided,  however,
that,  in each such case, the shares acquired will remain subject to the CDSC if
redeemed within the CDSC Period.
 
Investors, upon notification, will provide a PRO RATA refund of any CDSC paid in
connection with a  redemption of shares  of any Fortis  fund (by crediting  such
refunded  CDSC  to  such  shareholder's  account) if,  within  60  days  of such
redemption, all or  any portion  of the  redemption proceeds  are reinvested  in
shares of the Fund. Any reinvestment within 60 days of a redemption on which the
CDSC  was paid will be made without  the imposition of a FESC. Such reinvestment
will be subject to the same CDSC to  which such amount was subject prior to  the
redemption, but the CDSC Period will run from the original investment date.
 
CLASS B, H, AND C SHARES
 
The  CDSC on Class B, H,  and C shares will be  calculated on an amount equal to
the lesser of the net asset value of the shares at the time of purchase or their
net asset value at the time of redemption. No charge will be imposed on  amounts
representing  an  increase  in  share  value  due  to  capital  appreciation. In
addition, no charge  will be  assessed on  shares derived  from reinvestment  of
dividends  or capital gains distributions or on  shares held for longer than the
applicable CDSC Period.
 
                                       17
<PAGE>
Upon any request for redemption of shares of any class of shares that imposes  a
CDSC,  it will be assumed, unless otherwise requested, that shares subject to no
CDSC will be redeemed first in the order purchased and all remaining shares that
are subject to a CDSC will be  redeemed in the order purchased. With respect  to
the redemption of shares subject to no CDSC where the shareholder owns more than
one  class  of shares,  those shares  with the  highest Rule  12b-1 fee  will be
redeemed in full prior to any redemption of shares with a lower Rule 12b-1 fee.
 
The CDSC does not apply to: (1)  redemption of shares when a Fund exercises  its
right  to liquidate accounts which  are less than the  minimum account size; (2)
death or disability, as defined in Section 72(m)(7) of the Code (if satisfactory
evidence is provided  to the Fund);  (3) with respect  to Class B  and H  shares
only,  an amount that represents, on an annual (non-cumulative) basis, up to 10%
of the amount (at  the time of the  investment) of the shareholder's  purchases;
and  (4)  with respect  to  Class B,  H, and  C  shares, qualified  plan benefit
distributions due to participant's separation  from service, loans or  financial
hardship  (excluding IRAs, SEPs, and 403(b), 457, and Fortis KEY plans) upon the
Fund's receipt from the plan's administrator or trustee of a signature guarantee
and written instructions detailing the reason for the distribution.
 
As an illustration of CDSC calculations, assume that Shareholder X purchases  on
Year  1/Day 1 100 shares at $10 per share. Assume further that, on Year 2/Day 1,
Shareholder X purchased  an additional  100 shares  at $12  per share.  Finally,
assume  that,  on Year  3/Day 1,  Shareholder  X wishes  to redeem  shares worth
$1,300, and that the net  asset value per share as  of the close of business  on
such day is $13. To effect Shareholder X's redemption request, 100 shares at $13
per  share (totaling  $1,300) would  be redeemed.  The CDSC  would be  waived in
connection with the redemption of that number  of shares equal in value (at  the
time  of redemption) to $220 (10% of  $1,000-- the purchase amount of the shares
purchased by Shareholder  X on  Year 1/Day  1--plus 10%  of $1200--the  purchase
amount  of the shares purchased by Shareholder  X on Year 2/Day 1.) In addition,
no CDSC  would apply  to the  $400 in  capital appreciation  on Shareholder  X's
shares ($2,600 Year 3 value minus $2,200 purchase cost of shares).
 
If  a shareholder exchanges shares subject to a CDSC for Class B, H, or C shares
of a different  Fortis Fund,  the transaction  will not  be subject  to a  CDSC.
However, when shares acquired through the exchange are redeemed, the shareholder
will  be treated as if no exchange took place for the purpose of determining the
CDSC Period and applying the CDSC.
 
Investors, upon notification, will  provide, out of its  own assets, a PRO  RATA
refund  of any CDSC paid in connection with a redemption of Class B, H, or Class
C shares of  any Fund  (by crediting such  refunded CDSC  to such  shareholder's
account)  if,  within 60  days of  such redemption,  all or  any portion  of the
redemption proceeds are reinvested  in shares of  the same class  in any of  the
Fortis  Funds. Any reinvestment within 60 days of a redemption to which the CDSC
was paid will be  made without the  imposition of a  front-end sales charge  but
will  be subject to the same CDSC to  which such amount was subject prior to the
redemption. The CDSC Period will run from the original investment date.
 
SHAREHOLDER INQUIRIES
 
Inquiries should be directed to  your broker-dealer or sales representative,  or
to  the Fund at the  telephone number or mailing address  listed on the cover of
this Prospectus.  A  $10  fee will  be  charged  for copies  of  Annual  Account
Summaries older than the preceding year.
 
APPENDIX
 
TAX-EXEMPT BOND RATINGS
 
STANDARD  & POOR'S  RATINGS SERVICES.  Its ratings  for municipal  debt have the
following definitions:
 
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 repay principal
and differs from the higher rated issues only in a 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 in higher rated categories.
 
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.
 
Debt  rated "BB," "B," "CCC" and "CC"  is regarded, on balance, as predominantly
speculative with respect  to capacity  to pay  interest and  repay principal  in
accordance with the terms of the obligation. "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 risk exposures to adverse conditions.
 
Debt  rated  "BB"  has  less  near-term  vulnerability  to  default  than  other
speculative issues. However, it faces major ongoing uncertainties or exposure to
adverse  business,  financial,  or  economic  conditions  which  could  lead  to
inadequate capacity to  meet timely  interest and principal  payments. The  "BB"
rating  category  is also  used for  debt  subordinated to  senior debt  that is
assigned an actual or implied "BBB-" rating.
 
Debt rated "B"  has a  greater vulnerability to  default but  currently has  the
capacity  to meet interest payments  and principal repayments. Adverse business,
financial, or economic conditions will likely
 
                                       18
<PAGE>
impair capacity or  willingness to  pay interest  and repay  principal. The  "B"
rating  category  is also  used for  debt  subordinated to  senior debt  that is
assigned an actual or implied "BB" or "BB-" rating.
 
Debt rated "CCC" has a currently  identifiable vulnerability to default, and  is
dependent  upon favorable business,  financial, and economic  conditions to meet
timely payment of interest and repayment  of principal. In the event of  adverse
business,  financial,  or economic  conditions,  it is  not  likely to  have the
capacity to pay interest and repay principal. The "CCC" rating category is  also
used  for debt subordinated to senior debt that is assigned an actual or implied
"B" or "B-" rating.
 
The rating "CC" is typically applied to debt subordinated to senior debt that is
assigned an actual or implied "CCC" rating.
 
The rating "C" is typically applied to debt subordinated to senior debt which is
assigned an actual or implied "CCC-" debt rating. The "C" rating may be used  to
cover  a situation where a bankruptcy petition  has been filed, but debt service
payments are continued.
 
The rating "CI" is reserved for income bonds on which no interest is being paid.
 
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.
 
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 categories.
 
"NR" indicates that  no rating has  been requested, that  there is  insufficient
information on which to base a rating, or that Standard & Poor's does not rate a
particular type of obligation as a matter of policy.
 
BOND  INVESTMENT QUALITY  STANDARDS: Under  present commercial  bank regulations
issued by  the  Comptroller  of  the  Currency, bonds  rated  in  the  top  four
categories  (AAA, AA, A, BBB, commonly  known as "Investment Grade" ratings) are
generally regarded  as eligible  for  bank investment.  In addition,  the  Legal
Investment  Laws of various states impose  certain rating or other standards for
obligations eligible for investment by savings banks, trust companies, insurance
companies, and fiduciaries generally.
 
MOODY'S INVESTORS  SERVICE, INC.  Its ratings  for municipal  bonds include  the
following:
 
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.
 
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 risk appear somewhat larger than in Aaa securities.
 
Bonds which  are rated  "A" possess  many  favorable 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.
 
Bonds which are rated  "Baa" are considered as  medium grade obligations,  i.e.,
they  are neither  highly protected  nor poorly  secured. Interest  payments and
principal security  appear  adequate  for the  present  but  certain  protective
elements  may be lacking or may  be characteristically unreliable over any great
length of time. Such  bonds lack outstanding  investment characteristics and  in
fact have speculative characteristics as well.
 
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.
 
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.
 
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.
 
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.
 
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.
 
MUNICIPAL NOTES AND OTHER SHORT-TERM LOANS
 
STANDARD & POOR'S RATINGS SERVICES. A Standard & Poor's note rating reflects the
liquidity concerns and market access risks  unique to notes. Notes due in  three
years  or less will  likely receive a  note rating. Notes  maturing beyond three
years will most likely receive a long-term debt rating.
 
                                       19
<PAGE>
Note rating symbols are as follows:
 
SP-1 -- Very  strong or  strong capacity to  pay principal  and interest.  Those
issues determined to possess overwhelming safety characteristics will be given a
plus (+) designation.
 
SP-2 -- Satisfactory capacity to pay principal and interest.
 
SP-3 -- Speculative capacity to pay principal and interest.
MOODY'S  INVESTORS SERVICES. Moody's  ratings for state  and municipal notes and
other short-term  loans  are designated  Moody's  Investment Grade  (MIG).  This
distinction  is in recognition of the differences between short-term credit risk
and long-term  risk.  Factors  affecting  the  liquidity  of  the  borrower  and
short-term  cyclical elements  are critical  in short-term  ratings, while other
factors of major importance in  bond risk may be  less important over the  short
run.  In the case of variable rate demand obligations, two ratings are assigned;
one representing an evaluation of the  degree of risk associated with  scheduled
principal and interest payments, and the other representing an evaluation of the
degree  of  risk  associated  with the  demand  feature.  The  short-term rating
assigned to the demand feature of variable rate demand obligations is designated
as VMIG. Moody's ratings for short-term loans have the following definitions:
 
MIG_1/VMIG_1. This designation  denotes best  quality. There  is present  strong
protection   by  established   cash  flows,   superior  liquidity   support,  or
demonstrated broad-based access to the market for refinancing.
 
MIG_2/VMIG_2. This designation denotes high  quality. Margins of protection  are
ample although not so large as in the preceding group.
 
MIG_3/VMIG_3.  This designation denotes favorable quality. All security elements
are accounted for but there is lacking the undeniable strength of the  preceding
grades.  Liquidity and cash flow protection may  be narrow and market access for
refinancing is likely to be less well established.
 
MIG_4/VMIG_4. This  designation denotes  adequate quality.  Protection  commonly
regarded  as  required of  an investment  security is  present and  although not
distinctly or predominantly speculative, there is specific risk.
 
TAX-EXEMPT DEMAND BONDS
 
Standard & Poor's assigns "dual" ratings to all long-term debt issues that  have
as part of their provisions a demand or double feature.
 
The first rating addresses the likelihood of repayment of principal and interest
as  due, and the second rating addresses  only the demand feature. The long-term
debt rating symbols are used for bonds to denote the long-term maturity and  the
commercial  paper rating symbols are used to denote the put option (for example,
"AAA/ A-1+").  For the  newer  "demand notes,"  Standard  & Poor's  note  rating
symbols,  combined with  the commercial  paper symbols,  are used  (for example,
"SP-1+/A-1+").
 
                                       20
<PAGE>
FORTIS-Registered Trademark-
                        --------------------------------------------------------
                    ACCOUNT APPLICATION
 
                           Complete this application to open a new Fortis
                           account or to add services to an existing Fortis
                           account. For personal service, please call your
                           investment professional or Fortis customer service at
Mail to:                   1-800-800-2638, ext. 3012. Submission of an
FORTIS MUTUAL FUNDS        incomplete application may cause processing delays.
CM-9614                    DO NOT USE TO OPEN A FORTIS IRA, SEP, 403(B) OR
St. Paul, MN 55170-9614    FORTIS MONEY FUND ACCOUNT.
 
________________________________________________________________________________
 1    ACCOUNT INFORMATION
________________________________________________________________________________
Please provide the information requested below:
/ /INDIVIDUAL: Please print your name, Social Security number, U.S. citizen
   status.
/ /JOINT TENANT: List all names, one Social Security number, one U.S. citizen
   status.
/ /UNIFORM GIFT/TRANSFER TO MINORS: Provide name of custodian (ONLY ONE) and
   minor, minor's Social Security number, minor's U.S. citizen status and date
   of birth of minor.
/ /TRUST: List trustee and trust title, including trust date, trust's Taxpayer
   ID number; also include a photocopy of first page of the trust agreement.
/ /CORPORATION, ASSOCIATION, PARTNERSHIP: Include full name, Taxpayer ID number.
/ /FORTIS KEY PLAN: Include Social Security number.
/ /QUALIFIED PLAN: Include name of Plan and trustee, Plan's Taxpayer ID number.
/ / OTHER: _____________________________________________________________________
- ---------------------------------------------------------------
Owner (Individual, 1st Joint Tenant, Custodian, Trustee) (Please print)
- ------------------------------------------------------------------------
Owner (2nd Joint Tenant, Minor, Trust Name) (Please print)
- ------------------------------------------------------------------------
Additional information, if needed
- ------------------------------------------------------------------------
Street address
- ------------------------------------------------------------------------
City                                            State            Zip
- ------------------------------------------------------------------------
Social Security number (Taxpayer ID)
(     )
- ---------------------------------------------------------------
Daytime phone                       Date of birth
                                    (Uniform Gift/Transfer to Minors)
Date of Trust (if applicable) __________________________________________________
Are you a U.S. citizen?  / / Yes   / / No
If no, country of permanent residence __________________________________________
95749 (12/96)
________________________________________________________________________________
 2    TRANSFER ON DEATH
________________________________________________________________________________
Please indicate the Primary Beneficiary with "PB" after the beneficiary(ies)
name(s). Indicate Contingent Beneficiary with "CB." Indicate Lineal Descendant
Per Stirpes with "LDPS" if you want ownership to pass to the legal heirs of the
primary beneficiary in the event a designated beneficiary dies before the
account owner.
TOD IS ONLY AVAILABLE FOR INDIVIDUAL AND JOINT TENANTS (JTWROS) ACCOUNTS.
BENEFICIARY(IES):
Name _____________________________ SS# _________________________________________
Name _____________________________ SS# _________________________________________
Name _____________________________ SS# _________________________________________
________________________________________________________________________________
 3    INVESTMENT ACCOUNT
________________________________________________________________________________
A. PHONE ORDERS
Was order previously phoned in? If yes, date ___________________________________
Confirmation # ___________________________ Account # ___________________________
FOR PHONE ORDERS, CHECK MUST BE MADE PAYABLE TO FORTIS INVESTORS
B. MAIL-IN ORDERS
Check enclosed for $____________________________. (MADE PAYABLE TO FORTIS FUNDS)
                                                             MUST INDICATE CLASS
 
<TABLE>
<C>   <S>         <C>                <C>
  1)  ----------  $   -----------                       A / / B / / C / / H / /
      Fund Name       Amount or %                      Class
  2)              $                                     A / / B / / C / / H / /
      ----------      -----------
      Fund Name       Amount or %                      Class
  3)              $                                     A / / B / / C / / H / /
      ----------      -----------
      Fund Name       Amount or %                      Class
  4)              $                                     A / / B / / C / / H / /
      ----------      -----------
      Fund Name       Amount or %                      Class
  5)              $                                     A / / B / / C / / H / /
      ----------      -----------
      Fund Name       Amount or %                      Class
</TABLE>
 
________________________________________________________________________________
 4    EXEMPTION FROM SALES CHARGE
________________________________________________________________________________
 
CHECK IF APPLICABLE (for net asset value purchases):
/ / I am a member of one of the categories of persons listed under "Exemptions
    from Sales Charge" in the prospectus. I qualify for exemption from the sales
    charge because ____________________________________________________________.
 
/ / I was (within the past 60 days) the owner of a fixed annuity contract not
    deemed a security or a shareholder of an unrelated mutual fund with a
    front-end and/or deferred sales charge. I have attached the mutual
    fund/insurance check (or copy of the redemption confirmation/surrender
    form).
<PAGE>
________________________________________________________________________________
 5    SIGNATURE & CERTIFICATION
________________________________________________________________________________
I have received and read each appropriate fund prospectus and understand that
its terms are incorporated by reference into this application. I am of legal age
and legal capacity.
I understand that this application is subject to acceptance by Fortis Investors,
Inc.
I CERTIFY, UNDER PENALTIES OF PERJURY, THAT:
(1)  THE SOCIAL SECURITY NUMBER OR TAXPAYER ID NUMBER PROVIDED IS CORRECT; AND
     (CROSS OUT THE FOLLOWING IF NOT TRUE)
(2)  THAT THE IRS HAS NEVER NOTIFIED ME THAT I AM SUBJECT TO 31% BACKUP
     WITHHOLDING, OR HAS NOTIFIED ME THAT I AM NO LONGER SUBJECT TO SUCH BACKUP
     WITHHOLDING.
Each person signing on behalf of any entity represents that his or her actions
are authorized. It is agreed that all Fortis Funds, Fortis Investors, Fortis
Advisers and their officers, directors, agents and employees will not be liable
for any loss, liability, damage or expense for relying upon this application or
any instruction believed genuine.
IF YOU ARE NOT SIGNING AS AN INDIVIDUAL, STATE YOUR TITLE OR CAPACITY (INCLUDE
APPROPRIATE DOCUMENTS VERIFYING YOUR CAPACITY).
THE INTERNAL REVENUE SERVICE DOES NOT REQUIRE YOUR CONSENT TO ANY PROVISION OF
THIS DOCUMENT OTHER THAN THE CERTIFICATIONS REQUIRED TO AVOID BACKUP
WITHHOLDING.
AUTHORIZED SIGNATURE(S)
X
- ---------------------------------------------------------------
     Owner, Custodian, Trustee                                  Date
X
- ---------------------------------------------------------------
     Joint Owner, Trustee                                       Date
________________________________________________________________________________
 6    DEALER/REPRESENTATIVE INFORMATION
________________________________________________________________________________
- --------------------------------------------------
Representative's name (please print)
- ------------------------------------------------------------------------
Name of Broker/Dealer
- ------------------------------------------------------------------------
Branch Office address
- ------------------------------------------------------------------------
Representative's signature
                                    (     )
- ------------------------------------------------------------------------
Representative's number                 Representative's Phone Number
- ------------------------------------------------------------------------
AUTHORIZED SIGNATURE OF BROKER/DEALER
________________________________________________________________________________
 7    DISTRIBUTION OPTIONS
________________________________________________________________________________
If no option is selected, all distributions will be reinvested in the same
Fortis fund(s) selected above. Please note that distributions can only be
reinvested in the SAME CLASS.
/ / Reinvest dividends and capital gains
/ / Dividends in cash and reinvest capital gains (See Section 9 for payment
    options.)
/ / Dividends and capital gains in cash (See Section 9 for payment options.)
/ / Distributions into another Fortis fund (must be SAME CLASS).
    ____________________________________________________________________________
                Fund  Name                 Fund/Account #  (if existing account)
________________________________________________________________________________
 8    SYSTEMATIC EXCHANGE PROGRAM
________________________________________________________________________________
Fortis' Systematic Transfer Program allows you to transfer money from any Fortis
fund, in which you have a current balance of at least $1,000, into any other
Fortis fund, on a monthly basis. The minimum amount for each transfer is $50.
Generally, transfers between funds must be within the SAME CLASS. See prospectus
for details.
- ------------------------------------------------------------------------
Fund from which shares will be exchanged:             Effective Date
FUND(S) TO RECEIVE INVESTMENT(S):
 
<TABLE>
<S>                                       <C>
- --------------------------------------------------------------------------------
                  Fund                           Amount to invest monthly
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
</TABLE>
 
________________________________________________________________________________
 9    WITHDRAWAL OPTIONS
________________________________________________________________________________
 
A. CASH DIVIDENDS
 
PLEASE FOWARD THE PAYMENT TO:
 
<TABLE>
  <S>   <C>
  / /   My Bank. (Please complete Bank Information in
        Section D, and choose one option below. Payment
        will be sent via U.S. Mail if neither option is
        checked.)
                / / Via U.S. Mail
                / / Via ACH (electronic transfer)
  / /   My address of record.
</TABLE>
 
B. SYSTEMATIC WITHDRAWAL PLAN
Please consult your financial or tax adviser before electing a Systematic
Withdrawal Plan.
 
Please redeem shares from my Fortis ______________________________________ Fund,
account number _______________________ in the amount of $______________________.
 
Effective Withdrawal Date __________________________  __________________________
                            Month                             Day
 
<TABLE>
<S>           <C>                <C>      <C>
FREQUENCY:    / / Monthly                 / / Semi-Annually
              / / Quarterly               / / Annually
</TABLE>
 
PLEASE FOWARD THE PAYMENT TO:
 
<TABLE>
  <S>   <C>
  / /   My Bank. (Please complete Bank Information in
        Section D, and choose one option below. Payment
        will be sent via U.S. Mail if neither option is
        checked.)
                / / Via U.S. Mail
                / / Via ACH (electronic transfer)
  / /   My address of record.
</TABLE>
 
C. TELEPHONE OPTIONS
 
/ / TELEPHONE EXCHANGE. All exchanges must be into accounts having the identical
    registration-ownership. All authorized signatures listed in Section 5 (or
    your registered representative with shareholder consent) can make telephone
    transfers.
/ / TELEPHONE REDEMPTION ($25,000 LIMIT AND NOT AVAILABLE FOR QUALIFIED PLANS)
    If you have not changed your address in the past 60 days, you are eligible
    for this service. This option allows all authorized signatures in Section 5
    (or your registered representative with shareholder consent) to redeem up to
    $25,000 from your Fortis account.
 
PLEASE FORWARD THE PAYMENT TO:
 
<TABLE>
  <S>   <C>
  / /   My Bank. (Please complete Bank Information in
        Section D, and choose one option below. Payment
        will be sent via U.S. Mail if neither option is
        checked.)
                / / Via U.S. Mail
                / / Via ACH (electronic transfer)
  / /   My address of record.
</TABLE>
 
<PAGE>
(WITHDRAWAL OPTIONS, CONTINUED)
 
D. BANK INFORMATION
 
I request Fortis Financial Group (FFG) to pay sums due me by crediting my bank
account in the form of electronic entries. This authorization will remain in
effect until I notify FFG.
 
TYPE OF ACCOUNT:    / / Checking    / / Savings
Bank name ______________________________________________________________________
Address ________________________________________________________________________
City, State, Zip _______________________________________________________________
Name of bank account ___________________________________________________________
Bank account number ____________________________________________________________
Bank transit number ____________________________________________________________
Bank phone number ______________________________________________________________
 
ATTACH A VOIDED CHECK FROM YOUR BANK CHECKING ACCOUNT
________________________________________________________________________________
 10    REDUCED FRONT-END SALES CHARGES
________________________________________________________________________________
 
A. RIGHT OF ACCUMULATION
 
/ / I own shares of more than one fund in the Fortis Family of Funds, which may
entitle me to a reduced sales charge.
 
- --------------------------------------------------------------------------------
Name on account                           Account number
 
- --------------------------------------------------------------------------------
Name on account                           Account number
 
- --------------------------------------------------------------------------------
Name on account                           Account number
 
B. STATEMENT OF INTENT
I agree to invest $_________ over a 13-month period beginning __________, 19__
(not more than 90 days prior to this application). I understand that an
additional sales charge must be paid if I do not complete my purchase.
________________________________________________________________________________
 11    PRIVILEGED ACCOUNT SERVICE
________________________________________________________________________________
 
Fortis' Privileged Account Service systematically rebalances your funds back to
your original specifications ($10,000 minimum per account). All funds must be
within the SAME CLASS.
 
Frequency:          / / quarterly         / / semi-annually         / / annually
 
<TABLE>
<S>   <C>                        <C>
            Fund Selected          Percentage
              (up to 5)             (whole %)
1)
      -------------------------  ---------------
2)
      -------------------------  ---------------
3)
      -------------------------  ---------------
4)
      -------------------------  ---------------
5)
      -------------------------  ---------------
</TABLE>
 
<PAGE>
________________________________________________________________________________
 12    SUITABILITY
________________________________________________________________________________
 
NOTE: Must be completed with each fund application unless you provide
suitability information to your broker/dealer on a different form.
State In Which Application Was Signed ______________________________________
 
- --------------------------------------------------------------------------------
Employer
 
- --------------------------------------------------------------------------------
Business Address
 
- --------------------------------------------------------------------------------
City, State, ZIP
 
- --------------------------------------------------------------------------------
Occupation                                                        Age (optional)
 
Is customer associated with or employed by another
NASD member?    / / Yes      / / No
 
<TABLE>
<S>                         <C>                        <C>
- --------------------------------------------------------------------------------
Please mark one box under                                      ESTIMATED
ESTIMATED ANNUAL INCOME             ESTIMATED                     NET
and one box under                    ANNUAL                      WORTH
ESTIMATED NET WORTH                  INCOME                  (Exclusive of
                                  (All Sources)            Family Residence)
 
- --------------------------------------------------------------------------------
under $10,000
 
- --------------------------------------------------------------------------------
$10,000 - $25,000
 
- --------------------------------------------------------------------------------
$25,000 - $50,000
 
- --------------------------------------------------------------------------------
$50,000 - $100,000
 
- --------------------------------------------------------------------------------
$100,000 - $500,000
 
- --------------------------------------------------------------------------------
$500,000 - $1,000,000
 
- --------------------------------------------------------------------------------
Over $1,000,000
 
- --------------------------------------------------------------------------------
Declined
 
- --------------------------------------------------------------------------------
</TABLE>
 
Source of Funds
- --------------------------------------------------------------------------------
 
ESTIMATED FEDERAL TAX BRACKET
/ / 15%       / / 28%      / / 31%      / / 36%      / / 39.6%      / / Declined
 
INVESTMENT OBJECTIVES
 
/ / Growth (long-term capital appreciation)
 
/ / Income (cash generating)
 
/ / Tax-free Income
 
/ / Diversification
/ / Other (please specify) _________________________________________
 
Did you use a Fortis Asset Allocation model? / / Yes / / No
<PAGE>
________________________________________________________________________________
 13    SYSTEMATIC INVESTMENT PLAN
________________________________________________________________________________
 
Complete the Automated Clearing House (ACH) Authorization Agreement Form in the
prospectus and attach a VOIDED check from your bank checking account. These
plans may be established for as little as $25.
________________________________________________________________________________
 14    OTHER SPECIAL INSTRUCTIONS
________________________________________________________________________________
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
<PAGE>
 
<TABLE>
<S>                                             <C>
             FORTIS MUTUAL FUND                 FORTIS-Registered Trademark-
AUTOMATED CLEARING HOUSE (ACH) AUTHORIZATION
                  AGREEMENT
                                                Mail to:FORTIS MUTUAL FUNDS
Please complete each section below to                  P.O. Box 64284
establish ACH capability to your Fortis                St. Paul, MN 55164
Mutual Fund Account.
For personal service, please call your
investment professional or Fortis at (800)
800-2638, Ext. 3012.
For investment options, complete sections
(1)(2)(3). For withdrawal, complete sections
(1)(2)(4)(5).
</TABLE>
 
________________________________________________________________________________
 1     FORTIS ACCOUNT INFORMATION
________________________________________________________________________________
Account Registration:
________________________________________________________________________________
Owner (Individual, 1st Joint Tenant, Custodian, Trustee)
________________________________________________________________________________
Owner (2nd Joint Tenant, Minor, Trust Name)
________________________________________________________________________________
Additional Information, if needed
________________________________________________________________________________
Street address
________________________________________________________________________________
City                                        State                Zip
________________________________________ _______________________________________
Social Security number (Taxpayer I.D.)          Day Time Phone
________________________________________________________________________________
 2     BANK/FINANCIAL INSTITUTION INFORMATION
________________________________________________________________________________
 
<TABLE>
<S>             <C>                   <C>
PLAN TYPE:      / / New Plan          / / Bank Change
ACCOUNT TYPE:   / / Checking          / / Savings
                (must attach a        (must attach a
                voided check)         deposit slip)
</TABLE>
 
________________________________________________________________________________
Transit Number
________________________________________________________________________________
Bank Account Number
________________________________________________________________________________
Account Owner(s) (Please Print)
________________________________________________________________________________
Depositor's Daytime Phone Number
CLEARLY PRINT THE BANK/FINANCIAL INSTITUTION'S NAME AND ADDRESS BELOW:
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
Signature of Depositor                                      Date
________________________________________________________________________________
Signature of Joint-Depositor                                Date
________________________________________________________________________________
 3     INVESTMENT OPTION(S)
________________________________________________________________________________
 
<TABLE>
<S>        <C>        <C>
 I request Fortis Financial Group (FFG) to obtain payment of sums becoming due the
 company by charging my account in the form of electronic debit entries. I request
 and authorize the financial institution named  to accept, honor and charge  those
 entries  to my account. Please allow 30  days for collected funds to be available
 in your Fortis account.
A.         / /        Invest via FORTIS INFORMATION LINE by phone
                      (minimum $25, maximum $10,000)
                      Please allow up to four business days for deposit into
                      Fortis Funds. Transactions after 3:00 p.m. (CST) will be
                      processed the following business day.
                      *Not available on tax qualified accounts such as IRA, SEP,
                       SARSEP and Key plans.
B.         / /        Systematic Investment Plan:   / / New Plan   / / Change Plan
C.         / /        Starting Draft Date:
D.         / /        Account Number:
</TABLE>
 
<TABLE>
<CAPTION>
                                                            Class                  Amount
                         Fund                            (Circle One)      $25.00 per fund minimum
- ------------------------------------------------------  --------------  -----------------------------
<S>                                                     <C>             <C>
                                                               A B C H
                                                               A B C H
                                                               A B C H
                                                               A B C H
</TABLE>
 
________________________________________________________________________________
 4     WITHDRAWAL OPTION(S)
________________________________________________________________________________
 
<TABLE>
  <S>   <C>   <C>
   I request Fortis Financial Group (FFG) to pay sums due me  by
   crediting  my bank account in the form of electronic entries.
   I request and authorize the financial institution to  accept,
   honor and credit those entries to my account. Withdrawal from
   Fortis  Fund(s) requires account  owner(s) signature(s) - see
   Section 5
  (Please consult your financial or tax adviser before electing
  a systematic withdrawal plan. For Tax Qualified accounts,
  additional forms are required for distribution.)
  A.    / /   Cash Dividends
  B.    / /   Redeem via FORTIS INFORMATION LINE by phone
              (minimum $100, maximum $25,000)
              Please allow up to four business days for
              withdrawal to credit your bank account.
              Transactions after 3:00 p.m. (CST) will be
              processed the following business day.
              *Not available on tax qualified accounts such as
               IRA, SEP, SARSEP and Key plans.
  C.    / /   Systematic Withdrawal Plan:   / / New
              Plan   / / Change Plan
  D.    / /   Beginning Withdrawal Date:
  E.    / /   Account Number:
</TABLE>
 
<TABLE>
<CAPTION>
                                                            Class                  Amount
                         Fund                            (Circle One)      $25.00 per fund minimum
- ------------------------------------------------------  --------------  -----------------------------
<S>                                                     <C>             <C>
                                                               A B C H
                                                               A B C H
                                                               A B C H
                                                               A B C H
</TABLE>
 
________________________________________________________________________________
 5     SIGNATURES
________________________________________________________________________________
 
Each person signing on behalf of any entity represents that his or her actions
are authorized. It is agreed that all Fortis Funds, Fortis Investors, Fortis
Advisers and their officers, directors, agents and employees will not be liable
for any loss, liability, damage or expense for relying upon this application or
any instruction believed genuine.
 
This authorization will remain in effect until I notify FFG. I hereby terminate
any prior Authorization of FFG to initiate charges to this account. I understand
that any returned item or redemption of the entire account may result in
termination of my Automated Clearing House agreement. This authorization will
become effective upon acceptance by FFG at its home office.
 
Authorized Signature(s)
 
X ______________________________________________________________________________
  Owner, Custodian, Trustee                           Date
 
X ______________________________________________________________________________
  Joint Owner, Trustee                                Date
 
FORTIS-Registered Trademark-
FORTIS FINANCIAL GROUP
Fortis Advisers, Inc. (fund management since 1949)
Fortis Investors, Inc. (principal underwriter; member SIPC)
 
P.O. Box 64284
St. Paul, MN 55164
(800) 800-2638
 
98049(8/96)
<PAGE>
 
<TABLE>
<S>              <C>
   BULK RATE
 U.S. POSTAGE
</TABLE>
 
UVW
<TABLE>
<S>              <C>
     PAID
</TABLE>
 
FORTIS FINANCIAL GROUP
<TABLE>
<S>              <C>
MINNEAPOLIS, MN
PERMIT NO. 3794
</TABLE>
P.O. BOX 64284
ST. PAUL, MN 55164
 
PROSPECTUS
FEBRUARY 1, 1997
 
FORTIS TAX-FREE PORTFOLIOS, INC.
TAX-FREE CURRENT INCOME
 
95418 (REV. 2/97)
<PAGE>


                                     PART B
                       STATEMENT OF ADDITIONAL INFORMATION
 
<PAGE>
                        FORTIS TAX-FREE PORTFOLIOS, INC.
                      STATEMENT OF ADDITIONAL INFORMATION
                             DATED FEBRUARY 1, 1997
 
This Statement of Additional Information is NOT a prospectus, but should be read
in  conjunction with the Fortis Tax-Free Portfolios, Inc. (the "Fund") (prior to
January 31, 1992, known as AMEV  Tax-Free Fund, Inc.) Prospectus dated  February
1,  1997. A copy of  that prospectus may be  obtained from your broker-dealer or
sales representative. The  address of  Fortis Investors,  Inc. ("Investors")  is
P.O.  Box 64284, St. Paul, Minnesota 55164. Telephone: (612) 738-4000. Toll Free
1-(800) 800-2638.
 
No broker-dealer, sales representative, or  other person has been authorized  to
give  any information or to make  any representations other than those contained
in this  Statement  of  Additional  Information, and  if  given  or  made,  such
information or representations must not be relied upon as having been authorized
by  the Fund  or Investors.  This Statement  of Additional  Information does not
constitute an offer or solicitation by anyone  in any state in which such  offer
or  solicitation is not authorized, or in  which the person making such offer or
solicitation is not qualified to do so, or to any person to whom it is  unlawful
to make such offer or solicitation.
 
                                       26
<PAGE>
TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                         PAGE
<S>                                                      <C>
ORGANIZATION AND CLASSIFICATION........................    28
INVESTMENT OBJECTIVES AND POLICIES.....................    28
    - Investment Objectives............................    28
    - Investment Restrictions..........................    28
    - Variable Amount Master Demand Notes..............    29
    - Options on Securities............................    29
    - Illiquid Securities..............................    29
    - Risks of Transactions in High-Yielding
     Securities........................................    30
    - Special Considerations Relating to Minnesota Tax
      Exempt Bonds.....................................    31
DIRECTORS AND EXECUTIVE OFFICERS.......................    32
INVESTMENT ADVISORY AND OTHER SERVICES.................    34
    - General..........................................    34
    - Control and Management of Advisers and
      Investors........................................    35
    - Investment Advisory and Management
      Agreement........................................    35
PORTFOLIO TRANSACTIONS AND ALLOCATION OF BROKERAGE.....    36
CAPITAL STOCK..........................................    37
COMPUTATION OF NET ASSET VALUE AND PRICING.............    38
SPECIAL PURCHASE PLANS.................................    39
    - Statement of Intention...........................    39
    - Gifts or Transfers to Minor Children.............    39
    - Systematic Investment Plan.......................    39
    - Exchange Privilege...............................    40
    - Reinvested Dividend/Capital Gains Distributions
      between Fortis Funds.............................    40
 
<CAPTION>
                                                         PAGE
<S>                                                      <C>
    - Purchases by Fortis, Inc. (or its Subsidiaries)
      or Associated Persons............................    40
    - Purchases by Fund Directors or Officers..........    40
    - Purchases by Representatives or Employees of
      Broker-Dealers...................................    40
    - Purchases by Registered Investment Companies.....    40
    - Purchases with Proceeds from Redemption of
      Unrelated Mutual Fund Shares or Surrender of
      Certain Fixed Annuity Contracts..................    40
    - Purchases by Employees of Certain Banks and Other
      Financial Services Firms.........................    40
    - Purchases by Investment Advisers, Trust
      Companies, and Bank Trust Departments Exercising
      Discretionary Investment Authority or Using a
      Money Management Mutual Fund "Wrap" Program......    40
REDEMPTION.............................................    40
    - Systematic Withdrawal Plan.......................    41
    - Reinvestment Privilege...........................    41
TAXATION...............................................    41
UNDERWRITER............................................    43
PLAN OF DISTRIBUTION...................................    43
PERFORMANCE............................................    44
TAX-EXEMPT VERSUS TAXABLE INCOME.......................    47
FINANCIAL STATEMENTS...................................    50
CUSTODIAN; COUNSEL; ACCOUNTANTS........................    50
LIMITATION OF DIRECTOR LIABILITY.......................    50
ADDITIONAL INFORMATION.................................    50
</TABLE>
 
                                       27
<PAGE>
ORGANIZATION AND CLASSIFICATION
 
An investment company is an arrangement by which a number of persons invest in a
company that in turn invests in securities of other companies. The Fund operates
as  an  "open-end"  investment  company  because  it  generally  must  redeem an
investor's  shares  upon  request.  The  Portfolios  operate  as   "diversified"
investment companies because they offer investors an opportunity to minimize the
risk  inherent in  all investments in  securities by  spreading their investment
over a number of issuers. However, diversification cannot eliminate such risks.
 
INVESTMENT OBJECTIVES AND POLICIES
 
The National and Minnesota Portfolios  will operate as "diversified"  investment
companies  as defined under the Investment Company Act of 1940 (the "1940 Act"),
which means that they each must meet the following requirements:
 
        At  least  75%  of  the  value  of  its  total  assets  will  be
        represented  by  cash  and cash  items  (including receivables),
        Government securities, securities of other investment companies,
        and other  securities  for  the  purposes  of  this  calculation
        limited in respect of any one issuer to an amount not greater in
        value  than 5% of the value of the total assets of the Portfolio
        and to not more than 10% of the outstanding voting securities of
        such issuer.
 
INVESTMENT OBJECTIVES
 
The Fund currently is comprised of two separate investment portfolios, each with
its own investment goals, policies, and investment restrictions. The  investment
objective  of the National Portfolio is to  maximize total return, to be derived
primarily from  current  income exempt  from  federal  income tax  (at  a  level
consistent  with prudent investment risk) and from change in the market value of
the securities  held  by  the  Portfolio. The  National  Portfolio  will  invest
primarily  in securities of  states, territories, and  possessions of the United
States and the District of Columbia, and their political subdivisions, agencies,
and instrumentalities. The investment objective of the Minnesota Portfolio is to
maximize total return, to be derived  primarily from current income exempt  from
both  federal  and Minnesota  income  tax (at  a  level consistent  with prudent
investment risk) and from change in the  market value of the securities held  by
the Portfolio. The Minnesota Portfolio will invest primarily in securities which
are  issued  by the  State of  Minnesota,  its agencies,  instrumentalities, and
political subdivisions.
 
INVESTMENT RESTRICTIONS
 
The following investment restrictions are deemed fundamental policies. They  may
be changed only by the vote of a "majority" of the outstanding voting securities
of  each Portfolio,  which as used  in this Statement  of Additional Information
means the lesser of: (i)  67% or more of the  shares present at a  shareholders'
meeting  if more than 50% of  the Portfolio's outstanding shares are represented
at the meeting in person  or by proxy or (ii)  more than 50% of the  outstanding
shares of the Portfolio.
 
None of the Portfolios may:
 
    (1) Buy or hold any commodity or commodity future contracts, or any oil, gas
or mineral exploration or development program.
 
    (2) Invest directly in real estate or interests in real estate; however, the
Portfolios  may invest in interests in debt securities secured by real estate or
interests therein, or debt securities issued  by companies which invest in  real
estate or interests therein.
 
    (3)  Act as  an underwriter  of securities of  other issuers,  except to the
extent that, in  connection with  the disposition of  portfolio securities,  the
Portfolio may be deemed an underwriter under applicable laws.
 
    (4)  Purchase securities on margin or otherwise borrow money or issue senior
securities, except  that  the  Portfolio,  in  accordance  with  its  investment
objectives  and  policies, may  purchase  securities on  a  when-issued, delayed
delivery, or forward  commitment basis  (including the entering  into of  "roll"
transactions).  The Portfolio may also obtain such short-term credit as it needs
for the clearance of securities  transactions, and may borrow  from a bank as  a
temporary   measure  to  facilitate  redemptions  (but  not  for  leveraging  or
investment) in  an  amount  that  does  not exceed  10%  of  the  value  of  the
Portfolio's  total  assets. Investment  securities will  not be  purchased while
outstanding bank borrowings  (including "roll"  transactions) exceed  5% of  the
value of the Portfolio's total assets.
 
    (5)  Make loans  to other  persons, except  that it  may lend  its portfolio
securities in an amount not to exceed 33  1/3% of the value of its total  assets
(including  the amount lent)  if such loans  are secured by  collateral at least
equal to the market value of the securities lent, provided that such  collateral
shall be limited to cash, securities issued or guaranteed by the U.S. Government
or   its  agencies  or  instrumentalities,  certificates  of  deposit  or  other
high-grade, short-term obligations or  interest-bearing cash equivalents.  Loans
shall  not  be  deemed  to  include repurchase  agreements  or  the  purchase or
acquisition of a portion of an issue of notes, bonds, debentures, or other  debt
securities,  whether  or  not such  purchase  or  acquisition is  made  upon the
original issuance of the securities. ("Total assets" of a Portfolio includes the
amount lent as well as the collateral securing such loans.)
 
The following investment restrictions may be  changed by the Board of  Directors
of the Fund (the "Board of Directors") without shareholder approval.
 
The Portfolios will not:
 
    (1)  Invest more than 5% of its net assets in securities of other investment
companies, except in  connection with  a merger,  consolidation, acquisition  or
reorganization. (Although the Portfolio indirectly absorbs its pro rata share of
the  other investment  companies' expenses through  the yield  received on these
securities, management  believes  the  yield and  liquidity  features  of  these
securities to, at
 
                                       28
<PAGE>
times,  be  more beneficial  to  the Portfolio  than  other types  of short-term
securities and that the indirect absorption  of these expenses has a de  minimus
effect on the Portfolio's return.)
 
    (2)  Invest  more  than 15%  of  its net  assets  in all  forms  of illiquid
investments, as  determined  pursuant  to  applicable  Securities  and  Exchange
Commission rules and interpretations. Securities that have been determined to be
liquid  by  the  Board of  Directors  of the  Fund  or Advisers  subject  to the
oversight of such Board of Directors will not be subject to this limitation.
 
    (3) Make short sales, except for sales "against the box."
 
    (4) Mortgage,  pledge,  or hypothecate  its  assets, except  to  the  extent
necessary to secure permitted borrowings.
 
    (5) Invest in real estate investment trusts.
 
    (6)  Invest more than 5% of  its net assets, valued at  the lower of cost or
market, in warrants; nor, within  such amount, invest more  than 2% of such  net
assets  in warrants not listed on the  New York Stock Exchange or American Stock
Exchange. Warrants attached to securities or acquired in units are excepted from
the above limitations.
 
    (7) Invest in  real estate limited  partnerships or in  oil, gas, and  other
mineral leases.
 
    (8)  Buy securities of any  issuer for the purpose  of exercising control or
management.
 
Any investment  policy or  restriction which  involves a  maximum percentage  of
securities  or assets shall  not be considered  to be violated  unless an excess
over the percentage  occurs immediately  after an acquisition  of securities  or
utilization  of  assets and  results therefrom.  This  provision does  not apply
however to "illiquid securities."
 
VARIABLE AMOUNT MASTER DEMAND NOTES
 
Each Portfolio  may  invest  in  variable  amount  master  demand  notes.  These
instruments are short-term, unsecured promissory notes issued by corporations to
finance  short-term  credit  needs.  They allow  the  investment  of fluctuating
amounts by  the  Portfolio at  varying  market  rates of  interest  pursuant  to
arrangements between the Portfolio, as lender, and the borrower. Variable amount
master  demand notes  permit a  series of  short-term borrowings  under a single
note. Both the lender and  the borrower have the right  to reduce the amount  of
outstanding  indebtedness at any time. Such notes provide that the interest rate
on the  amount outstanding  varies on  a  daily basis  depending upon  a  stated
short-term  interest rate barometer. Advisers  will monitor the creditworthiness
of the borrower throughout the  term of the variable  master demand note. It  is
not  generally contemplated that such instruments will be traded and there is no
secondary market for  the notes.  Typically, agreements relating  to such  notes
provide  that the lender shall  not sell or otherwise  transfer the note without
the borrower's  consent. Thus,  variable amount  master demand  notes may  under
certain circumstances be deemed illiquid assets. However, such notes will not be
considered  illiquid where  the Portfolio  has a  "same day  withdrawal option,"
I.E., where it has the unconditional right to demand and receive payment in full
of the principal amount then outstanding  together with interest to the date  of
payment.
 
OPTIONS ON SECURITIES
 
OPTIONS  ON SECURITIES   Each  Portfolio may write  (sell) covered  call and put
options and purchase call and put  options. Neither of the Portfolios may  write
"naked"  call  options.  Where  the Portfolio  writes  an  option  which expires
unexercised or is closed out by the Portfolio at a profit, it will retain all or
a portion of the premium received for the option, which will increase its  gross
income  and will  offset in  part the  reduced value  of the  Portfolio security
underlying the  option, or  the increased  cost of  portfolio securities  to  be
acquired.  In contrast  however, if the  price of the  underlying security moves
adversely to  the Portfolio's  position, the  option may  be exercised  and  the
Portfolio  will be  required to  purchase or sell  the underlying  security at a
disadvantageous price, which may only be  partially offset by the amount of  the
premium,  if at all. Each Portfolio may  also write combinations of put and call
options on  the  same  security  known as  "straddles."  Such  transactions  can
generate additional premium income but also present increased risk.
 
Each  Portfolio may also purchase put or  call options in anticipation of market
fluctuations which may adversely affect the value of its portfolio or the prices
of securities that the Portfolio wants to purchase at a later date. In the event
that the expected market fluctuations occur, the Portfolio may be able to offset
the resulting adverse effect on its portfolio, in whole or in part, through  the
options  purchased.  The  premium  paid  for  a  put  or  call  option  plus any
transaction costs will reduce the benefit, if any realized by the Portfolio upon
exercise or liquidation of  the option, and unless  the price of the  underlying
security  changes  sufficiently,  the option  may  expire without  value  to the
Portfolio.
 
ILLIQUID SECURITIES
 
Each of the Portfolios may invest in illiquid securities, including "restricted"
securities. (A restricted security is one which was originally sold in a private
placement and was  not registered  with the Securities  and Exchange  Commission
(the  "Commission" or  the "SEC")  under the Securities  Act of  1933 (the "1933
Act") and  which is  not free  to be  resold unless  it is  registered with  the
Commission  or its sale is exempt from registration.) However, neither Portfolio
will invest more than 15% of the value of its net assets in illiquid securities,
as determined pursuant to applicable Commission rules and interpretations.
 
The staff of the SEC has taken the position that the liquidity of securities  in
the portfolio of a fund offering redeemable securities is a question of fact for
a  board of directors of such a fund to determine, based upon a consideration by
such board  of  the  readily available  trading  markets  and a  review  of  any
contractual  restrictions. The  SEC staff also  acknowledges that,  while such a
board retains  ultimate responsibility,  it may  delegate this  function to  the
fund's investment adviser.
 
                                       29
<PAGE>
The Board of Directors of the Fund has adopted procedures to determine liquidity
of certain securities, including commercial paper issued pursuant to the private
placement  exemption of  Section 4(2)  of the 1933  Act and  securities that are
eligible for  resale to  qualified institutional  buyers pursuant  to Rule  144A
under  the  1933 Act.  Under  these procedures,  factors  taken into  account in
determining the liquidity of a security include (a) the frequency of trades  and
quotes  for the security, (b) the number  of dealers willing to purchase or sell
the  security  and  the  number  of  other  potential  purchasers,  (c)   dealer
undertakings  to  make a  market  in the  security, and  (d)  the nature  of the
security and the  nature of  the marketplace trades  (E.G., the  time needed  to
dispose  of the security, the  method of soliciting offers  and the mechanics of
transfer). Section  4(2) commercial  paper or  a Rule  144A security  that  when
purchased  enjoyed  a  fair  degree  of  marketability  may  subsequently become
illiquid, thereby adversely affecting the liquidity of the Portfolio.
 
Illiquid securities  may offer  a higher  yield than  securities that  are  more
readily  marketable. The  sale of  illiquid securities,  however, often requires
more time and results in higher  brokerage charges or dealer discounts or  other
selling  expenses  than does  the  sale of  securities  eligible for  trading on
national securities exchanges  or in the  over-the-counter markets. A  Portfolio
may  also be restricted in its ability to sell such securities at a time when it
is advisable to do so.  Restricted securities often sell  at a price lower  than
similar securities that are not subject to restrictions on resale.
 
RISKS OF TRANSACTIONS IN HIGH-YIELDING SECURITIES
 
While  at least 90% of each Portfolio  will be of "investment grade" quality, up
to 10%  may be  invested in  non-investment grade  securities (securities  rated
below  BBB).  Participation  in lower  rated  securities  transactions generally
involves greater  returns  in  the  form  of  higher  average  yields.  However,
participation  in  such transactions  involves greater  risks, often  related to
sensitivity  to  interest  rates,  economic  changes,  solvency,  and   relative
liquidity in the secondary trading market.
 
The  high yielding, high risk securities market  is still relatively new and its
recent growth paralleled a long period of economic expansion and an increase  in
merger,   acquisition,  and  leveraged  buyout  activity.  Such  securities  are
especially subject to adverse changes in general economic conditions, to changes
in the  financial  condition of  their  issuers,  and to  price  fluctuation  in
response  to changes in  interest rates. During periods  of economic downturn or
rising interest  rates,  issuers of  such  securities may  experience  financial
stress  that could adversely affect their  ability to make payments of principal
and interest and increase  the possibility of default.  While the Portfolios  do
not  generally directly invest  in corporate obligations,  the credit quality of
certain types of industrial development bonds is at least in part a function  of
the credit quality of the underlying corporate obligation.
 
Yields  on high yield, high risk securities will fluctuate over time. The prices
of such securities have been found to be less sensitive to interest rate changes
than higher-rated investments, but more sensitive to adverse economic changes or
individual  corporate  developments.  Also,  during  an  economic  downturn   or
substantial  period  of  rising  interest  rates  highly  leveraged  issuers may
experience financial  stress  which  would adversely  affect  their  ability  to
service  their  principal and  interest payment  obligations, to  meet projected
business goals, and to obtain additional financing. If the issuer of a  security
held  by a Portfolio defaulted, such  Portfolio may incur additional expenses to
seek recovery. In addition, periods of  economic uncertainty and changes can  be
expected  to result in increased volatility  of market prices of such securities
and such Portfolio's asset  value. Furthermore, in the  case of such  securities
structured  as zero  coupon securities,  their market  prices are  affected to a
greater extent by  interest rate changes  and thereby tend  to be more  volatile
than securities which pay interest periodically and in cash.
 
High-yielding, high risk securities present risks based on payment expectations.
For  example, such securities  may contain redemption or  call provisions. If an
issuer exercises  these provisions  in  a declining  interest rate  market,  the
Portfolios  would have to  replace the security  with a lower-yielding security,
resulting in a decreased return for investors. Conversely, a high-yielding, high
risk security's value will  decrease in a rising  interest rate market, as  will
the  value of such  Portfolio's assets. If  the Portfolios experience unexpected
net redemptions, this may force them to sell such securities, without regard  to
their  investment  merits,  thereby decreasing  the  asset base  upon  which the
Portfolios' expenses can be spread and possibly reducing the rate of return.
 
To the extent that there is no  established secondary market, there may be  thin
trading  of high-yielding, high  risk securities. This  may adversely affect the
ability of the Fund's Board of Directors to accurately value such securities and
the  Portfolio's  assets,  and  the  Portfolios'  ability  to  dispose  of   the
securities.  Securities valuation  becomes more  difficult and  judgment plays a
greater role  in  valuation  because  there is  less  reliable,  objective  data
available.  Adverse publicity and investor perceptions,  whether or not based on
fundamental analysis, may decrease the values and liquidity of such  securities,
especially in a thinly traded market. Illiquid or restricted high-yielding, high
risk  securities purchased  by the  Portfolios may  involve special registration
responsibilities,  liabilities   and   costs,  and   liquidity   and   valuation
difficulties.
 
Certain  risks  are associated  with  applying credit  ratings  as a  method for
evaluating high-yielding,  high risk  securities.  For example,  credit  ratings
evaluate the safety of principal and interest payments, not market value risk of
such  securities. Since  credit rating  agencies may  fail to  timely change the
credit ratings to reflect subsequent events, Advisers continuously monitors  the
issuers  of such securities held  by the Portfolios to  determine if the issuers
will have  sufficient cash  flow  and profits  to  meet required  principal  and
interest payments, and to assure the securities' liquidity so the Portfolios can
meet  redemption requests.  The achievement of  the investment  objective of the
Portfolios may be more dependent upon Advisers' own credit analysis than is  the
case  for  higher quality  bonds. Also,  the Portfolios  may retain  a portfolio
security whose  rating has  been changed  if the  security otherwise  meets  the
Portfolio's investment objective and investment criteria.
 
                                       30
<PAGE>
SPECIAL CONSIDERATIONS RELATING TO MINNESOTA TAX EXEMPT BONDS
 
Minnesota's  constitutionally prescribed  fiscal period  is a  biennium, and the
state operates on a biennial  budget basis. Legislative appropriations for  each
biennium  are prepared and  adopted during the final  legislative session of the
immediately preceding biennium.  Prior to each  fiscal year of  a biennium,  the
state's  Department  of  Finance allots  a  portion of  the  applicable biennial
appropriation to each agency or other entity for which an appropriation has been
made. An  agency  or  other entity  may  not  expend monies  in  excess  of  its
allotment. If revenues are insufficient to balance total available resources and
expenditures,  the state's  Commissioner of  Finance, with  the approval  of the
Governor, is required to  reduce allotments to the  extent necessary to  balance
expenditures and forecast available resources for the then current biennium. The
Governor  may prefer legislative  action when a  large reduction in expenditures
appears necessary, and if the state's legislature is not in session the Governor
is empowered to convene a special session.
 
Frequently in recent years, legislation has been required to eliminate projected
budget deficits by raising additional revenue, reducing expenditures,  including
aids to political subdivisions and higher education, reducing the State's budget
reserve,  imposing a  sales tax  on purchases  by local  governmental units, and
making other budgetary adjustments. The Minnesota Department of Finance November
1996 Forecast projects  that, under current  laws, the State  will complete  its
current  biennium June 30, 1997 with a $522 million surplus, plus a $350 million
cash flow account balance,  a $261 million budget  reserve, and $186 million  in
other  dedicated accounts. Total General Fund expenditures and transfers for the
biennium are projected to be $18.8 billion. The Forecast for the biennium ending
June 30, 1999 shows a General Fund surplus of $1.4 billion, after funding a $350
million cash flow account,  a $261 million budget  reserve, and $186 million  in
other  dedicated  accounts, if  current law  is not  changed. Under  current law
spending caps, State expenditures for education finance (K-12), human  services,
and  corrections in the biennium  ending June 30, 1999  may not be sufficient to
maintain program  levels of  the previous  biennium.  The State  is party  to  a
variety  of civil actions that could  adversely affect the State's General Fund.
In addition, substantial portions of State  and local revenues are derived  from
federal  expenditures,  and  reductions in  federal  aid  to the  State  and its
political subdivisions  and other  federal spending  cuts may  have  substantial
adverse  effects on the economic and fiscal condition of the State and its local
governmental units.  Risks  are  inherent  in  making  revenue  and  expenditure
forecasts.  Economic or fiscal conditions less favorable than those reflected in
State budget forecasts  and planning estimates  may create additional  budgetary
pressures.
 
State  grants and  aids represent  a large percentage  of the  total revenues of
cities, towns, counties  and school  districts in Minnesota,  but generally  the
State  has no obligation to make payments on local obligations in the event of a
default. Even with  respect to revenue  obligations, no assurance  can be  given
that economic or other fiscal difficulties and the resultant impact on State and
local  government  finances  will  not  adversely  affect  the  ability  of  the
respective obligors to  make timely  payment of  the principal  and interest  on
Minnesota  municipal  obligations that  are held  by  the Fund  or the  value or
marketability of such obligations.
 
For more information on the  Portfolio's investment objectives and policies  see
the Fund Prospectus, "Investment Objectives and Policies; Risk Considerations."
 
                                       31
<PAGE>
DIRECTORS AND EXECUTIVE OFFICERS
 
The names, addresses, principal occupations, and other affiliations of directors
and executive officers of the Fund are given below:
 
<TABLE>
<CAPTION>
                                            POSITION WITH               PRINCIPAL OCCUPATION AND AFFILIATIONS WITH
        NAME & ADDRESS             AGE        THE FUND               "AFFILIATED PERSONS" OR INVESTORS (PAST 5 YEARS)
- ------------------------------     ---     ---------------     ------------------------------------------------------------
<S>                                <C>     <C>                 <C>
Richard W. Cutting                 65      Director            Certified public accountant and financial consultant.
137 Chapin Parkway
Buffalo, New York
Allen R. Freedman*                 56      Director            Chairman and Chief Executive Officer of Fortis, Inc.; a
One Chase Manhattan Plaza                                      Managing Director of Fortis International, N. V.
New York, New York
Dr. Robert M. Gavin                56      Director            Interim President, Haverford College. Prior to July 1996,
Office of the President                                        President, Macalester College.
370 Lancaster Ave
Haverford, PA 19041
Benjamin S. Jaffray                66      Director            Chairman of the Sheffield Group, Ltd., a financial
4040 IDS Center                                                consulting group.
Minneapolis, Minnesota
Jean L. King                       52      Director            President, Communi-King, a communications consulting firm.
12 Evergreen Lane
St. Paul, Minnesota
Dean C. Kopperud*                  44      President and       Chief Executive Officer and a Director of Advisers,
500 Bielenberg Drive                       Director            President and a Director of Investors, and Senior Vice
Woodbury, Minnesota                                            President and a Director of Fortis Benefits Insurance
                                                               Company and Time Insurance Company.
Edward M. Mahoney                  66      Director            Retired; prior to December, 1994, Chairman and Chief
2760 Pheasant Road                                             Executive Officer and a Director of Advisers and Investors,
Excelsior, Minnesota                                           Senior Vice President and a Director of Fortis Benefits
                                                               Insurance Company, and Senior Vice President of Time
                                                               Insurance Company.
Robb L. Prince                     55      Director            Financial and Employee Benefit Consultant; prior to July,
5108 Duggan Plaza                                              1995, Vice President and Treasurer, Jostens, Inc., a
Edina, Minnesota                                               producer of products and services for the youth, education,
                                                               sports award, and recognition markets.
Leonard J. Santow                  60      Director            Principal, Griggs & Santow, Incorporated, economic and
75 Wall Street                                                 financial consultant.
21st Floor
New York, New York
Noel S. Shadko                     42      Director            Marketing Consultant; prior to May 1996, Senior Vice
1908 W. 49th St.                                               President of Marketing & Strategic Planning, Rollerblade,
Minneapolis, MN                                                Inc.
Joseph M. Wikler                   55      Director            Investment consultant and private investor; prior to
12520 Davan Drive                                              January, 1994, Director of Research, Chief Investment
Silver Spring, Maryland                                        Officer, Principal, and a Director, the Rothschild Co.,
                                                               Baltimore, Maryland. The Rothschild Co. is an investment
                                                               advisory firm.
Gary N. Yalen                      54      Vice President      President and Chief Investment Officer of Advisers (since
One Chase Manhattan Plaza                                      August, 1995) and Fortis Asset Management, a division of
New York, New York                                             Fortis, Inc., New York, NY, and Senior Vice President,
                                                               Investments, Fortis, Inc.
James S. Byrd                      45      Vice President      Executive Vice President of Advisers.
5500 Wayzata Boulevard
Golden Valley, Minnesota
Howard G. Hudson                   59      Vice President      Executive Vice President of Advisers (since August, 1995)
One Chase Manhattan Plaza                                      and Senior Vice President, Fixed Income, Fortis Asset
New York, New York                                             Management.
</TABLE>
 
                                       32
<PAGE>
<TABLE>
<CAPTION>
                                            POSITION WITH               PRINCIPAL OCCUPATION AND AFFILIATIONS WITH
        NAME & ADDRESS             AGE        THE FUND               "AFFILIATED PERSONS" OR INVESTORS (PAST 5 YEARS)
- ------------------------------     ---     ---------------     ------------------------------------------------------------
<S>                                <C>     <C>                 <C>
Stephen M. Poling                  65      Vice President      Executive Vice President and Director of Advisers.
5500 Wayzata Boulevard
Golden Valley, Minnesota
Nicholas L. M. de Peyster          30      Vice President      Vice President of Advisers (since August, 1995) and Vice
41st Floor                                                     President, Equities, Fortis Asset Management.
One Chase Manhattan Plaza
New York, New York
Charles J. Dudley                  37      Vice President      Vice President of Advisers and Fortis Asset Management;
One Chase Manhattan Plaza                                      prior to August, 1995, Senior Vice President, Sun America
New York, New York                                             Asset Management, Los Angeles, CA
Maroun M. Hayek                    48      Vice President      Vice President of Advisers (since August, 1995) and Vice
One Chase Manhattan Plaza                                      President, Fixed Income, Fortis Asset Management.
New York, New York
Robert C. Lindberg                 43      Vice President      Vice President of Advisers; prior to July, 1993, Vice
One Chase Manhattan Plaza                                      President, Portfolio Manager, and Chief Securities Trader,
New York, New York                                             COMERICA, Inc., Detroit, Michigan. COMERICA, Inc. is a bank.
Charles L. Mehlhouse               54      Vice President      Vice President of Advisers; prior to March 1996 Portfolio
5500 Wayzata Boulevard                                         Manager to Marshall & Ilsley Bank Corporation.
Golden Valley, Minnesota
Kevin J. Michels                   45      Vice President      Vice President of Advisers (since August, 1995) and Vice
One Chase Manhattan Plaza                                      President, Administration, Fortis Asset Management.
New York, New York
Christopher J. Pagano              33      Vice President      Vice President of Advisers; prior to March 1996, Government
One Chase Manhattan Plaza                                      Strategist for Merrill Lynch, New York, N.Y.
New York, N.Y.
Stephen M. Rickert                 53      Vice President      Vice President of Advisers (since August, 1995) and
One Chase Manhattan Plaza                                      Corporate Bond Analyst, Fortis Asset Management; from
New York, New York                                             August, 1993 to April, 1994, Corporate Bond Analyst, Dillon,
                                                               Read & Co., Inc., New York, NY; prior to June, 1992,
                                                               Corporate Bond Analyst, Western Asset Management, Los
                                                               Angeles, CA.
Keith R. Thomson                   59      Vice President      Vice President of Advisers.
5500 Wayzata Boulevard
Golden Valley, Minnesota
Christopher J. Woods               36      Vice President      Vice President of Advisers (since August, 1995) and Vice
One Chase Manhattan Plaza                                      President, Fixed Income, Fortis Asset Management; prior to
New York, New York                                             November, 1992, Head of Fixed Income, The Police and
                                                               Firemen's Disability and Pension Fund of Ohio, Columbus, OH.
Robert W. Beltz, Jr.               47      Vice President      Vice President--Mutual Fund Operations of Advisers and
500 Bielenberg Drive                                           Investors.
Woodbury, Minnesota
Tamara L. Fagely                   38      Vice President      Second Vice President of Advisers and Investors.
500 Bielenberg Drive                       and Treasurer
Woodbury, Minnesota
David A. Peterson                  54      Vice President      Vice President and Assistant General Counsel, Fortis
500 Bielenberg Drive                                           Benefits Insurance Company.
Woodbury, Minnesota
Scott R. Plummer                   37      Vice President      Second Vice President, Corporate Counsel and Assistant
500 Bielenberg Dr.                                             Secretary to Advisers; prior to September 1993, Attorney,
Woodbury, Minnesota                                            Zelle & Larson, Minneapolis, MN
</TABLE>
 
                                       33
<PAGE>
<TABLE>
<CAPTION>
                                            POSITION WITH               PRINCIPAL OCCUPATION AND AFFILIATIONS WITH
        NAME & ADDRESS             AGE        THE FUND               "AFFILIATED PERSONS" OR INVESTORS (PAST 5 YEARS)
- ------------------------------     ---     ---------------     ------------------------------------------------------------
<S>                                <C>     <C>                 <C>
Rhonda J. Schwartz                 39      Vice President      Senior Vice President, General Counsel, and Secretary of
500 Bielenberg Drive                                           Advisers; Senior Vice President and General Counsel--Life
Woodbury, Minnesota                                            and Investment Products, Fortis Benefits Insurance Company
                                                               and Vice President and General Counsel, Life and Investment
                                                               Products, Time Insurance Company; from 1993 to January 1996,
                                                               Vice President, General Counsel, Fortis, Inc.; prior to
                                                               1993, Attorney, Norris, McLaughlin & Marcus, Somerville, NJ.
Michael J. Radmer                  51      Secretary           Partner, Dorsey & Whitney LLP, the Fund's General Counsel.
220 South Sixth Street
Minneapolis, Minnesota
</TABLE>
 
- -------------------------------------------
*Mr.  Kopperud is  an "interested  person" (as  defined under  the 1940  Act) of
 Fortis Equity, Advisers, and Investors primarily because he is an officer and a
 director of each.  Mr. Freedman  is an  "interested person"  of Fortis  Equity,
 Advisers,  and Investors because he is  Chairman and Chief Executive Officer of
 Fortis, Inc. ("Fortis"),  the parent  company of Advisers  and indirect  parent
 company  of Investors, and a Managing  Director of Fortis International, N. V.,
 the parent company of Fortis.
- -------------------------------------------
 
All of the above  officers and directors also  are officers and/or directors  of
other  investment  companies of  which Advisers  is  the investment  adviser. No
compensation is paid by the Fund to any of its officers or directors except  for
a  fee of  $100 per month,  $100 per  meeting attended, and  $100 per applicable
committee meeting  attended  (and reimbursement  of  travel expenses  to  attend
meetings)  to each director not affiliated  with Advisers. For the fiscal period
ended September 30, 1996, the  National Portfolio, and the Minnesota  Portfolio,
paid  $8,500, and $6,247, respectively, in directors' fees to directors who were
not affiliated with Advisers  or Investors and reimbursed  two such directors  a
total  of $500 and $301, respectively, for travel expenses incurred in attending
directors'  meetings.  During  the  same  period,  the  National  Portfolio  and
Minnesota  Portfolio,  paid  legal  fees  and  expenses  of  $8,474  and $6,346,
respectively, to a law firm  of which the Fund's Secretary  is a partner. As  of
September 30, 1996, the directors and executive officers as a group beneficially
owned less than 1% of the outstanding shares of each Portfolio. Directors Gavin,
Jaffray,  Kopperud,  Mahoney, Prince  and Shadko  are  members of  the Executive
Committee of the Board of Directors. While the Executive Committee is authorized
to act in the  intervals between regular board  meetings with full capacity  and
authority  of  the full  Board of  Directors, except  as limited  by law,  it is
expected that the Committee will meet at least twice a year.
 
The following  table sets  forth  the aggregate  compensation received  by  each
director  during the fiscal year ended September  30, 1996, as well as the total
compensation received by  each director  from the  Fund and  all other  open-end
investment  companies managed by Advisers during the fiscal year ended September
30, 1996. Neither  Mr. Freedman,  who is  an officer  of the  parent company  of
Advisers,  nor  Mr.  Kopperud, who  is  an  officer of  Advisers  and Investors,
received any  such compensation  and they  are  not included  in the  table.  No
executive  officer of  the Fund received  compensation from the  Fund during the
fiscal year ended September 30, 1996.
 
<TABLE>
<CAPTION>
                                                      TOTAL
                                                COMPENSATION FROM
                                 AGGREGATE        FUND COMPLEX
                             COMPENSATION FROM       PAID TO
DIRECTOR                         THE FUND          DIRECTOR(1)
- ---------------------------  -----------------  -----------------
<S>                          <C>                <C>
Richard W. Cutting.........      $   1,800          $  30,750
Dr. Robert M. Gavin........          1,800             30,850
Benjamin S. Jaffray........          1,800             28,650
Jean L. King...............          1,800             30,750
Edward M. Mahoney..........          1,800             30,850
Thomas R. Pellett(2).......            300              6,150
Robb L. Prince.............          1,800             30,850
Leonard J. Santow..........          1,721             29,900
Noel S. Shadko.............            400              5,100
Joseph M. Wikler...........          1,800             30,750
</TABLE>
 
- ------------------------
(1) Includes aggregate  compensation paid  by the Fund  and all  9 Other  Fortis
    Funds paid to the Director.
 
INVESTMENT ADVISORY AND OTHER SERVICES
 
GENERAL
 
Fortis  Advisers, Inc. ("Advisers") has been  the investment adviser and manager
of the Fund since the Fund began business in 1982. Investors acts as the  Fund's
underwriter.  Both  act  as  such pursuant  to  written  agreements periodically
approved by the directors or  shareholders of the Fund.  The address of both  is
that of the Fund.
 
As  of September 30, 1996, Advisers managed thirty investment company portfolios
with combined net assets of approximately $4,710,606,000 and one private account
with net assets of  approximately $19,203,000. Fortis  Financial Group also  has
approximately  $2.0  billion in  insurance reserves.  As of  the same  date, the
investment  company  portfolios  had  an  aggregate  of  251,852   shareholders,
including 4,150 shareholders of the Fund.
 
                                       34
<PAGE>
During  the fiscal years ended  September 30, 1996, September  30, 1995, and the
three-month fiscal period ended September  30, 1994, the National Portfolio  and
the  Minnesota Portfolio paid advisory and  management fees as follows: National
Portfolio--$581,556,  $557,889,  and  $147,364,  Minnesota  Portfolio--$395,618,
$387,530,  and $99,924.  During the  same periods,  Investors received $193,184,
$151,195, $54,730,  respectively,  for  underwriting  the  National  Portfolio's
shares,  and $92,398, $95,293,  and $34,819, respectively,  for underwriting the
Minnesota Portfolio's shares. Of the amounts received, Investors paid  $152,413,
$122,346,   and   $43,947,   respectively  to   broker-dealers   and  registered
representatives for  selling  shares  of the  National  Portfolio  and  $70,521,
$80,081, and $29,921, for selling shares of the Minnesota Portfolio.
 
During  the  fiscal periods  ended September  30,  1996, Investors  received the
following  amounts  pursuant  to  the   Plan  of  Distribution  (see  "Plan   of
distribution"),  paid  the following  amounts  to broker-dealers  and registered
representatives, and in addition to such amount (along with Advisers) spent  the
following  amounts  on  activities related  to  the distribution  of  the Fund's
shares:
 
<TABLE>
<CAPTION>
                                        NATIONAL     MINNESOTA
                                       PORTFOLIO     PORTFOLIO
                                       SEPTEMBER     SEPTEMBER
FISCAL PERIOD ENDED:                    30, 1996      30, 1996
- ------------------------------------  ------------  ------------
<S>                                   <C>           <C>
Amount Received.....................   $   48,762    $   22,345
Amount Paid.........................       42,796         7,510
Additional Expenses Paid............      180,698       105,823
</TABLE>
 
CONTROL AND MANAGEMENT OF ADVISERS AND INVESTORS
 
Fortis owns 100% of the outstanding voting securities of Advisers, and  Advisers
owns all of the outstanding voting securities of Investors.
 
Fortis,  located in New York,  New York, is a  wholly owned subsidiary of Fortis
International, N.V., which  has approximately $100  billion in assets  worldwide
and  is in  turn a  wholly owned  subsidiary of  AMEV/ VSB  1990 N.V. ("AMEV/VSB
1990").
 
AMEV/VSB 1990 is a  corporation organized under the  laws of The Netherlands  to
serve  as the holding company for all U.S. operations and is owned 50% by Fortis
AMEV and 50% by  Fortis AG. AMEV/VSB  1990 owns a group  of companies active  in
insurance,  banking and financial  services, and real  estate development in The
Netherlands, the United States, Western Europe, Australia, and New Zealand.
 
Fortis AMEV  is  a  diversified  financial  services  company  headquartered  in
Utrecht,  The Netherlands, where its insurance  operations began in 1847. Fortis
AG is  a  diversified  financial services  company  headquartered  in  Brussels,
Belgium, where its insurance operations began in 1824. Fortis AMEV and Fortis AG
own  a group of companies  (of which AMEV/VSB 1990  is one) active in insurance,
banking and financial services, and real estate development in The  Netherlands,
Belgium, the United States, Western Europe, and the Pacific Rim.
 
Dean  C.  Kopperud  is Chief  Executive  Officer  of Advisers  and  President of
Investors; Gary N. Yalen is President and Chief Investment Officer of  Advisers;
James  S. Byrd and Stephen M. Poling  are Executive Vice Presidents of Advisers;
Howard G. Hudson is Executive Vice President of Advisers; Debra L. Foss, Jon  H.
Nicholson,  and Dennis M. Ott are Senior  Vice Presidents of Advisers; Rhonda J.
Schwartz is Senior Vice President,  General Counsel, and Secretary of  Advisers;
Robert W. Beltz, Jr., and Thomas D. Gualdoni are Vice Presidents of Advisers and
Investors;  Nicholas  L. M.  de  Peyster, Charles  J.  Dudley, Maroun  M. Hayek,
Charles Melhouse, Kevin J. Michels, Robert C. Lindberg, Richard P. Roche,  Keith
R.  Thomson, Stephen M. Rickert, and Christopher J. Woods are Vice Presidents of
Advisers; John  E.  Hite  is  2nd Vice  President  and  Assistant  Secretary  of
Advisers;  Carol M. Houghtby is 2nd Vice President and Treasurer of Advisers and
Investors; Tamara L.  Fagely is 2nd  Vice President of  Advisers and  Investors;
Barbara  W. Kirby  and Deborah  K. Kramer are  2nd Vice  Presidents of Advisers;
David C. Greenzang  is Money Market  Portfolio Officer of  Advisers, Michael  D.
O'Connor  is  Qualified Plan  Officer of  Advisers; Barbara  J. Wolf  is Trading
Officer of  Advisers; Scott  R.  Plummer is  2nd  Vice President  and  Assistant
Secretary  of Advisers; Joanne M. Herron  is Assistant Treasurer of Advisers and
Investors and Sharon R. Jibben is Assistant Secretary of Advisers.
 
Messrs. Kopperud, Yalen, and Poling are the Directors of Advisers.
 
All of the  above persons  reside or have  offices in  the Minneapolis/St.  Paul
area,  except  Messrs.  Yalen,  Hudson,  de  Peyster,  Dudley,  Hayek, Lindberg,
Michels, Rickert, Woods and Greenzang, who are all located in New York City.
 
INVESTMENT ADVISORY AND MANAGEMENT AGREEMENT
 
Advisers acts as investment adviser and manager of each Portfolio under separate
Investment Advisory and Management  Agreements (the "Agreements") dated  January
31,  1992  (for  National  Portfolio),  and  December  12,  1990  (for Minnesota
Portfolio),  all  of   which  became  effective   on  their  respective   dates.
Shareholders  approved these  Agreements on  January 28,  1992, and  November 8,
1990, respectively. The Agreements were last approved by the Board of  Directors
on December 5, 1996. The approval by the Board of Directors included approval by
a  majority of the directors who are not parties to the contracts, or interested
persons of  such parties.  The Agreements  will terminate  automatically in  the
event  of their  assignment. In addition,  the Agreements are  terminable at any
time, without  penalty,  by the  Board  of Directors  or,  with respect  to  any
particular  portfolio, by  vote of a  majority of the  Fund's outstanding voting
securities of the applicable portfolio, on not more than 60 days' written notice
to Advisers, and  by Advisers  on 60  days' notice  to the  Fund. Unless  sooner
terminated,  the Agreements  continue in  effect for  more than  two years after
their execution only  so long as  such continuance is  specifically approved  at
least  annually  by  either the  Board  of  Directors or,  with  respect  to any
particular portfolio,  by  a  vote  of a  majority  of  the  outstanding  voting
securities  of the  applicable portfolio; provided  that, in  either event, such
continuance is also approved by  the vote of the  majority of the directors  who
are  not parties to such Agreements, or interested persons of such parties, cast
in person at a meeting called for the purpose of voting on such approval.
 
The Agreements provide for investment advisory and management fees calculated as
described in the following table. As you can see
 
                                       35
<PAGE>
from the table, this fee decreases (as  a percentage of Fund net assets) as  the
Fund  grows. The  fee percentage  for the National  Portfolio is  based upon the
average net assets of  the Portfolio alone, while  Minnesota Portfolio's fee  is
based  upon its prorata portion  of the fee based on  the combined assets of the
Minnesota and  National  Portfolios.  As  of December  31,  1996,  the  National
Portfolio, and Minnesota Portfolio, had net assets of approximately $77,924,000,
and $52,575,000.
 
<TABLE>
<CAPTION>
                                                          ANNUAL
                                                        INVESTMENT
                                                       ADVISORY AND
                            AVERAGE NET ASSETS        MANAGEMENT FEE
                       ----------------------------  -----------------
<S>                    <C>                           <C>
National Portfolio...  For the first $50,000,000               .8%
                       For assets over $50,000,000             .7%
Minnesota Portfolio..  For the first $50,000,000               .8%
                       For the next $50,000,000                .7%
                       For assets over $100,000,000          .625%
</TABLE>
 
The Agreement requires the Fund to pay all its expenses which are not assumed by
Advisers  and/or Investors. These Fund expenses  include, by way of example, but
not by way of limitation,  the fees and expenses  of directors and officers  who
are  not "affiliated persons"  of Advisers, interest  expenses, taxes, brokerage
fees and commissions, fees and expenses  of registering and qualifying the  Fund
and  its  shares  for  distribution under  Federal  and  state  securities laws,
expenses of preparing prospectuses and of printing and distributing prospectuses
annually  to  existing  shareholders,  custodian  charges,  auditing  and  legal
expenses,  insurance expenses, association  membership dues, and  the expense of
reports to shareholders, shareholders' meetings, and proxy solicitations.
 
Advisers bears the costs of acting as the Fund's transfer agent, registrar,  and
dividend  agent. Advisers or Investors also  shall bear all promotional expenses
in connection  with  the  distribution  of Fund  shares,  including  paying  for
prospectuses  and shareholder  reports for  new shareholders,  and the  costs of
sales literature.
 
Expenses that relate exclusively  to a particular  Portfolio, such as  custodian
charges  and registration fees for shares,  are charged to that Portfolio. Other
expenses of  the  Fund are  allocated  pro rata  between  the Portfolios  in  an
equitable  manner as determined by officers of the Fund under the supervision of
the Board of Directors, usually on the basis of net assets or number of shares.
 
Under the Agreements, Advisers, as investment adviser to the Fund, has the  sole
authority  and responsibility to  make and execute  investment decisions for the
Fund within the framework of the  Fund's investment policies, subject to  review
by  the Board of Directors.  Advisers also furnishes the  Fund with all required
management services, facilities, equipment, and personnel.
 
Although investment decisions for the Fund are made independently from those  of
the  other funds  or private  accounts managed  by Advisers,  sometimes the same
security is suitable for more than one fund or account. If and when two or  more
funds  or  accounts  simultaneously  purchase or  sell  the  same  security, the
transactions will  be  allocated as  to  price  and amount  in  accordance  with
arrangements  equitable to  each fund or  account. The  simultaneous purchase or
sale of the same securities by the Fund  and other funds or accounts may have  a
detrimental effect on the Fund, as this may affect the price paid or received by
the Fund or the size of the position obtainable by the Fund.
 
PORTFOLIO TRANSACTIONS AND ALLOCATION OF BROKERAGE
 
As  the Fund's  portfolio is  exclusively composed  of debt,  rather than equity
securities, most of the Fund's portfolio transactions are effected with  dealers
without  the payment of  brokerage commissions, but at  net prices which usually
include a spread or markup. In  effecting such portfolio transactions on  behalf
of  the Fund, Advisers  seeks the most  favorable net price  consistent with the
best execution.  However,  frequently Advisers  selects  a dealer  to  effect  a
particular  transaction  without contacting  all dealers  who  might be  able to
effect such transaction, because  of the volatility of  the bond market and  the
desire of Advisers to accept a particular price for a security because the price
offered by the dealer meets its guidelines for profit, yield, or both.
 
Decisions  with respect  to placement of  the Fund's  portfolio transactions are
made by  its  investment adviser.  The  primary consideration  in  making  these
decisions  is  efficiency in  the  execution of  orders  and obtaining  the most
favorable net  prices  for the  Fund.  When consistent  with  these  objectives,
business  may  be placed  with  broker-dealers who  furnish  investment research
services to Advisers. Such research  services include advice, both directly  and
in  writing, as to  the value of  securities; the advisability  of investing in,
purchasing, or  selling  securities;  and the  availability  of  securities,  or
purchasers  or sellers of securities; as well as analyses and reports concerning
issues, industries, securities, economic factors and trends, portfolio strategy,
and the performance  of accounts.  This allows  Advisers to  supplement its  own
investment  research activities  and enables  Advisers to  obtain the  views and
information of  individuals and  research staffs  of many  different  securities
firms prior to making investment decisions for the Fund. To the extent portfolio
transactions  are effected with broker-dealers  who furnish research services to
Advisers, Advisers  receives a  benefit,  not capable  of evaluation  in  dollar
amounts,  without providing any  direct monetary benefit to  the Fund from these
transactions.
 
                                       36
<PAGE>
Advisers  has  not  entered into  any  formal  or informal  agreements  with any
broker-dealers, nor does  it maintain any  "formula" which must  be followed  in
connection  with the  placement of Fund  portfolio transactions  in exchange for
research services provided  Advisers, except as  noted below. However,  Advisers
does  maintain an informal  list of broker-dealers,  which is used  from time to
time as a general guide in the placement of Fund business, in order to encourage
certain broker-dealers to provide Advisers with research services which Advisers
anticipates will be useful to  it. Because the list  is merely a general  guide,
which  is  to be  used only  after the  primary criterion  for the  selection of
broker-dealers (discussed above) has been  met, substantial deviations from  the
list  are permissible and may be expected  to occur. Advisers will authorize the
Fund to pay an  amount of commission for  effecting a securities transaction  in
excess of the amount of commission another broker-dealer would have charged only
if  Advisers  determines  in  good  faith  that  such  amount  of  commission is
reasonable in  relation to  the value  of the  brokerage and  research  services
provided  by  such  broker-dealer, viewed  in  terms of  either  that particular
transaction or Advisers' overall responsibilities  with respect to the  accounts
as  to which Advisers exercises investment  discretion. Generally, the Fund pays
higher commissions than the lowest rates available.
 
During the  fiscal period  ended  September 30,  1996, fixed  income  securities
transactions  having an aggregate dollar value of approximately $80,264,000, and
$44,818,000, for the National, and Minnesota Portfolios, respectively (excluding
short-term securities), were traded at net prices including a spread or  markup;
during  the same period, the Portfolios paid no brokerage commissions to brokers
involved in the purchase and sale of securities for the Portfolios.
 
The Portfolios will  not effect  any brokerage transactions  in their  portfolio
securities  with  any  broker-dealer  affiliated  directly  or  indirectly  with
Advisers, unless such transactions, including the frequency thereof, the receipt
of commissions  payable  in  connection  therewith, and  the  selection  of  the
affiliated   broker-dealer  effecting  such  transactions   are  not  unfair  or
unreasonable to the shareholders of the Portfolios. No commissions were paid  to
any  affiliate of  Advisers during the  fiscal period ended  September 30, 1996,
September 30, 1995, the  three-month fiscal period ended  September 30, 1994  or
the fiscal year ended June 30, 1994.
 
During  the  fiscal period  ended  September 30,  1996,  the Portfolios  did not
acquire the securities of any of its regular brokers or dealers or the parent of
those brokers or dealers  that derive more than  fifteen percent of their  gross
revenue from securities-related activities.
 
Fortis  Advisers, Inc. has developed written trade allocation procedures for its
management of the securities trading activities of its clients. Advisers manages
multiple portfolios, both public (mutual funds) and private. The purpose of  the
trade  allocation procedures is to treat the portfolios fairly and reasonably in
situations where the amount of a  security that is available is insufficient  to
satisfy the volume or price requirements of each portfolio that is interested in
purchasing that security.
 
Generally,  when the amount of securities available  in a public offering or the
secondary market is insufficient to satisfy the requirements for the  interested
portfolios,  the procedures require a pro rata allocation based upon the amounts
initially requested  by each  portfolio manager.  In allocating  trades made  on
combined basis, each participating portfolio will receive the same average price
for the securities purchased or sold.
 
Because  a pro rata  allocation may not always  adequately accommodate all facts
and circumstances, the procedures provide for exceptions to allocate trades on a
basis other than pro  rata. Examples of where  adjustments may be made  include:
(i)  the cash position of  the portfolios involved in  the transaction; and (ii)
the relative importance of the security to a portfolio in seeking to achieve its
investment objective.
 
CAPITAL STOCK
 
The Fund's shares have a par value of  $.01 per share and equal rights to  share
in dividends and assets. The shares possess no preemptive or conversion rights.
 
The  Fund currently has  two Portfolios, each  issuing its own  series of common
shares. Each Portfolio currently  offers its shares in  five classes, each  with
different  sales arrangements and  bearing different expenses.  Under the Fund's
Articles of Incorporation, the  Board of Directors is  authorized to create  new
portfolios or classes without the approval of the shareholders of the Fund. Each
share  of stock will have a pro-rata interest  in the assets of the Portfolio to
which the stock of that series relates  and will have no interest in the  assets
of  any other Portfolio. In the event  of liquidation, each share of a Portfolio
would have the same rights to dividends and assets as every other share of  that
Portfolio,  except that,  in the case  of a series  with more than  one class of
shares, such distributions will be adjusted to appropriately reflect any charges
and expenses borne by each individual class.
 
On some issues, such as the election  of directors, all shares of the Fund  vote
together  as  one  series.  Each  share  of  a  Portfolio  has  one  vote  (with
proportionate voting for  fractional shares)  irrespective of  the relative  net
asset value of the Portfolios' shares.
 
On  issues affecting particular Portfolios of the  Fund, the series of shares of
the affected Portfolio vote as  a separate series. An  example of such an  issue
would  be a fundamental investment restriction pertaining to only one Portfolio.
Shareholders of a Portfolio are not entitled to vote on any issue which does not
affect that Portfolio but which requires  a separate vote of another  Portfolio.
In  voting on the Agreement, approval of  the Agreement by the shareholders of a
particular Portfolio would  make the  Agreement effective as  to that  Portfolio
whether or not it had been approved by the shareholders of the other Portfolios.
 
On  December  31, 1996,  the National  Portfolio,  and Minnesota  Portfolio, had
7,170,212, and 5,084,273, shares outstanding, respectively.
 
                                       37
<PAGE>
On  that  date,  no  person  owned  of  record  or,  to  the  Fund's  knowledge,
beneficially as much as 5% of the outstanding shares of any Portfolio, except as
follows:
 
NATIONAL  PORTFOLIO: Class A--6%  Gene W. Paulsen, P.O.  Box 164, Gothenberg, NE
69138; 18% Brian  L. Johnson  and Joan  M. Johnson,  P.O. Box  400, Spooner,  WI
54801; Class B--6% First Trust Nat'l Assoc. c/f Robert N. McDill IRA, 2731 State
Rd.  25 N,  Lafayette, IN  47905; 11%  Earl Harris,  608 Summers  Dr., Houma, LA
70363; 6% Jean O'Brien & Joseph O'Brien, 407 Glenridge Rd., Stratford, CT 06497;
5% Eugene F. Short and Sylvia L.  Short, 705 W. 47th Ave., Anchorage, AK  99503;
17%  John W.  Heim and Carol  J. Heim, 6923  S. Owens St.,  Littleton, CO 80127;
Class C--24% Gary W. Wafer, 5807 Kelso Lane, Fort Wayne, IN 46818; 24% Janis  E.
Parker,  P.O. Box 1079, Port Aransas, TN  78373; 24% Robert L. Wafer, 16020 Lima
Rd., Apt. 10, Huntertown, IN 46748; 5% Eugene E. & Ruth M. Shepard Trustees, FBO
Eugene & Ruth Shepard Living Trust, 12690 Grandin LN, Bridgeton, MO 63044; Class
H--6% Maurice T. Moler, Charleston Manor, Room 34, 415 18th St., Charleston,  IL
61920; 6% Mark Caban, 120 Arden Dr., Glenshaw, PA 15116; 6% Sylvia W. Jacobs, 73
High St., Montclair, NJ 07042.
 
MINNESOTA  PORTFOLIO: Class A--37%  NFSC FEBO #03M-494470,  Michael Labalo, 2985
Norway Pine Rd.  W., Brainerd, MN  56401; Class B--41%  NFSC FEB0 #03M-267  384,
Minerva  Mikkilia Charitable  Remainder Trust, 70  E. St. Marie  St., Apt. #129,
Duluth, MN 55803;  18% Dain  Bosworth Inc.  FBO William  L. Keepers  and Kay  N.
Keepers,  Ten Comm, 3143 Canyon Rd., Chaska,  MN 55318; 6% Elsie M. Krostue, 825
1st St.  N.W., E.  Grand Forks,  MN  56721; Class  C--14% Theodore  Pulosky  c/f
Brandie  L. Pearson UTMA, RR1  Box 87, Donnelly, MN  56235; 5% Robert J. Trossen
and Susan  V. Trossen,  4130  121st Ave  NW, Coon  Rapids,  MN 55433;  9%  Joann
Sathoff,  RR1 Box 46, Dunnell, MN 56051;  10% Catherine A. Estrem, 1594 Lakewood
Dr., Maplewood, MN 55119; 9%  Greg L. Krause and  Debra Krause, 19050 101st  Ave
N., Maple Grove, MN 55311; 22% Lois M. Elias, RR1 Box 185, Kasson, MN 55944; 11%
Dennis E. Jones and Pamela M. Jones, P.O. Box 186, Lowry, MN 56349; Class H--13%
Mary  C. Jackson, 4300 W.  River Pkwy, Apt. 215,  Minneapolis, MN 55406; 18% BHC
Securities, Inc., FAO  52171 969, One  Commerce Square, 2005  Market St.,  Suite
1200, Philadelphia, PA 19103; 5% Margaret A. Murtaugh 2-9-9 Minami Azabu AM, 101
Grand  Forme, Minato-Ku,  Tokyo 106 Japan;  18% NKSC FEBO  #03M-487651, Keith B.
Magnuson, 737 Memorial  Dr., Crookston, MN  56716; 8% BHC  Securities, Inc.  FAO
52400254,  One Commerce  Square, 2005  Market St.  Suite 1200,  Philadelphia, PA
19103.
 
The Fund is  not required  under Minnesota law  to hold  annual or  periodically
scheduled  regular meetings of shareholders.  Minnesota corporation law provides
for the  Board  of Directors  to  convene  shareholder meetings  when  it  deems
appropriate. In addition, if a regular meeting of shareholders has not been held
during  the immediately preceding fifteen  months, a shareholder or shareholders
holding three percent  or more of  the voting shares  of the Fund  may demand  a
regular  meeting of shareholders by written notice  of demand given to the chief
executive officer or the chief financial officer of the Fund. Within ninety days
after receipt of the demand, a regular  meeting of shareholders must be held  at
the  Fund's expense. Additionally,  the 1940 Act  requires shareholder votes for
all amendments to fundamental investment  policies and restrictions and for  all
investment advisory contracts and amendments thereto.
 
Cumulative  voting is not authorized.  This means that the  holders of more than
50% of the shares  voting for the  election of directors can  elect 100% of  the
directors  if  they choose  to  do so,  and  in such  event  the holders  of the
remaining shares will be unable to elect any directors.
 
COMPUTATION OF NET ASSET VALUE AND PRICING
 
On September  30,  1996,  the  Portfolios'  net  asset  values  per  share  were
calculated as follows:
 
<TABLE>
<S>                                  <C>
NATIONAL PORTFOLIO
 
CLASS E
Net Assets      ($65,236,879)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding (6,065,625)       ($10.76)
 
CLASS A
Net Assets       ($6,238,551)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding  (580,484)        ($10.75)
 
CLASS B
Net Assets         ($996,745)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding   (92,840)        ($10.74)
 
CLASS H
Net Assets       ($4,014,962)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding  (373,466)        ($10.75)
 
CLASS C
Net Assets         ($222,651)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding   (20,737)        ($10.74)
 
MINNESOTA PORTFOLIO
 
CLASS E
Net Assets      ($49,262,468)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding (4,791,390)       ($10.28)
 
CLASS A
Net Assets       ($1,822,433)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding  (177,675)        ($10.26)
 
CLASS B
Net Assets       ($1,108,540)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding  (108,235)        ($10.24)
 
CLASS H
Net Assets       ($1,061,457)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding  (103,431)        ($10.26)
 
CLASS C
Net Assets         ($210,418)
- -------------------------            =  Net Asset Value Per Share
Shares Outstanding   (20,504)        ($10.26)
</TABLE>
 
                                       38
<PAGE>
To  obtain the public  offering price per  share, the 4.5%  sales charge must be
added to the net asset value obtained above:
 
NATIONAL PORTFOLIO
 
CLASS E
 
 $10.76
   ----  =  Public Offering Price Per Share
   .955     ($11.27)
 
CLASS A
 
 $10.75
   ----  =  Public Offering Price Per Share
   .955     ($11.26)
 
MINNESOTA PORTFOLIO
 
CLASS E
 
 $10.28
   ----  =  Public Offering Price Per Share
   .955     ($10.76)
 
CLASS A
 
 $10.26
   ----  =  Public Offering Price Per Share
   .955     ($10.74)
 
The primary close  of trading of  the New York  Stock Exchange (the  "Exchange")
currently  is  3:00 P.M.  (Central  Time), but  this  time may  be  changed. The
offering price for purchase orders received in the office of the Fund after  the
beginning  of each day  the Exchange is open  for trading is  based on net asset
value determined as  of the primary  closing time for  business on the  Exchange
that  day; the price in effect for orders  received after such close is based on
the net  asset value  as of  such close  of the  Exchange on  the next  day  the
Exchange is open for trading.
 
Generally, the net asset value of the Fund's shares is determined on each day on
which  the Exchange is open for business.  The Exchange is not open for business
on the following holidays (nor  on the nearest Monday  or Friday if the  holiday
falls on a weekend): New Year's Day, Presidents' Day, Good Friday, Memorial Day,
Independence  Day, Labor Day, Thanksgiving Day, and Christmas Day. Additionally,
net asset value need not be determined (i) on days on which changes in the value
of the Fund's portfolio  securities will not materially  affect the current  net
asset  value of the Fund's  shares; or (ii) on days  during which no Fund shares
are tendered for redemption and  no orders to purchase  or sell Fund shares  are
received by the Fund.
 
SPECIAL PURCHASE PLANS
 
The  Fund offers  several special purchase  plans, described  in the Prospectus,
which allow reduction  or elimination  of the  sales charge  for Class  A and  E
shares under certain circumstances. Additional information regarding some of the
plans is as follows:
 
STATEMENT OF INTENTION
 
The  13-month period is measured from the  date the letter of intent is approved
by Investors, or at the purchaser's option  it may be made retroactive 90  days,
in  which case Investors  will make appropriate  adjustments on purchases during
the 90-day period.
 
In computing  the  total  amount  purchased  for  purposes  of  determining  the
applicable  sales commission, the  public offering price (at  the time they were
purchased) of shares currently  held in the Fortis  Funds having a sales  charge
and purchased within the past 90 days may be used as a credit toward Fund shares
to be purchased under the Statement of Intention. Any such fund shares purchased
during  the remainder of the  13-month period also may  be included as purchases
made under the Statement of Intention.
 
The Statement  of  Intention includes  a  provision for  payment  of  additional
applicable  sales charges  at the end  of the  period in the  event the investor
fails to  purchase the  amount indicated.  This is  accomplished by  holding  in
escrow  the number of  shares represented by  the sales charge  discount. If the
investor's purchases equal those  specified in the  Statement of Intention,  the
escrow  is  released. If  the  purchases do  not  equal those  specified  in the
Statement of Intention, the shareholder may  remit to Investors an amount  equal
to  the difference between the dollar amount  of sales charges actually paid and
the amount of sales charges that would have been paid on the aggregate purchases
if the total of such purchases had been made at a single time. If the  purchaser
does  not remit this sum  to Investors on a  timely basis, Investors will redeem
the escrowed shares. The Statement of  Intention is not a binding obligation  on
the  part of  the investor  to purchase, or  the Fund  to sell,  the full amount
indicated. Nevertheless, the  Statement of  Intention should  be read  carefully
before it is signed.
 
GIFTS OR TRANSFERS TO MINOR CHILDREN
 
This  gift or transfer  is registered in the  name of the  custodian for a minor
under the Uniform Transfers to Minors Act  (in some states the Uniform Gifts  to
Minors  Act). Dividends or  capital gains distributions are  taxed to the child,
whose tax bracket is usually  lower than the adult's.  However, if the child  is
under  14 years old and his or her unearned income is more than $1,300 per year,
then that portion of the  child's income which exceeds  $1,300 per year will  be
taxed  to the child at the parents' top  rate. Control of the Fund shares passes
to the child upon reaching a specified adult age (either 18 or 21 years in  most
states).
 
SYSTEMATIC INVESTMENT PLAN
 
The  Fund provides  a convenient, voluntary  method of purchasing  shares in the
Fund through its "Systematic Investment Plan."
 
The principal purposes of the  Plan are to encourage  thrift by enabling you  to
make regular purchases in amounts less than normally required, and to employ the
principle of dollar cost averaging, described below.
 
By  acquiring Fund shares on a regular basis pursuant to a Systematic Investment
Plan, or investing regularly  on any other systematic  plan, the investor  takes
advantage  of  the  principle  of  dollar  cost  averaging.  Under  dollar  cost
averaging, if a  constant amount  is invested  at regular  intervals at  varying
price  levels, the average cost of all the shares will be lower than the average
of the price levels. This is because the same fixed number of dollars buys  more
shares  when  price  levels are  low  and  fewer shares  when  price  levels are
 
                                       39
<PAGE>
high. It is essential that the investor consider his or her financial ability to
continue this  investment program  during times  of market  decline as  well  as
market  rise. The  principle of dollar  cost averaging will  not protect against
loss in a declining market,  as a loss will result  if the plan is  discontinued
when the market value is less than cost.
 
An investor has no obligation to invest regularly or to continue the Plan, which
may  be terminated by the investor at  any time without penalty. Under the Plan,
any distributions of  income and realized  capital gains will  be reinvested  in
additional shares at net asset value unless a shareholder instructs Investors in
writing  to  pay them  in  cash. Investors  reserves  the right  to  increase or
decrease the amount required to open and  continue a Plan, and to terminate  any
Plan  after one year if the value of the amount invested is less than the amount
indicated.
 
EXCHANGE PRIVILEGE
 
The amount to be  exchanged must meet  the minimum purchase  amount of the  fund
being purchased.
 
Shareholders should consider the differing investment objectives and policies of
these other funds prior to making such exchange.
 
For  Federal tax  purposes, except where  the transferring shareholder  is a tax
qualified plan, a transfer between funds  is a taxable event that probably  will
give  rise to a capital gain or  loss. Furthermore, if a shareholder carries out
the exchange within  90 days of  purchasing the  shares in the  Fund, the  sales
charge  incurred on that  purchase cannot be taken  into account for determining
the shareholder's gain or loss  on the sale of those  shares to the extent  that
the  sales  charge  that would  have  been  applicable to  the  purchase  of the
later-acquired shares  in the  other fund  is reduced  because of  the  exchange
privilege.  However, the amount of  the sales charge that  may not be taken into
account in  determining  the shareholder's  gain  or loss  on  the sale  of  the
first-acquired  shares may be taken into account  in determining gain or loss on
the eventual sale or exchange of the later-acquired shares.
 
REINVESTED DIVIDEND/CAPITAL GAINS DISTRIBUTIONS BETWEEN
FORTIS FUNDS
 
This privilege is based upon the fact that such orders are generally unsolicited
and the resulting lack of sales effort and expense.
 
PURCHASES BY FORTIS, INC. (OR ITS SUBSIDIARIES) OR ASSOCIATED PERSONS
 
This privilege is based upon  the relationship of such  persons to the Fund  and
the resulting economies of sales effort and expense.
 
PURCHASES BY FUND DIRECTORS OR OFFICERS
 
This  privilege is based upon their familiarity  with the Fund and the resulting
lack of sales effort and expense.
 
PURCHASES BY REPRESENTATIVES OR EMPLOYEES OF BROKER-DEALERS
 
This privilege is based upon the presumed knowledge such persons have about  the
Fund  as a result of  their working for a company  selling the Fund's shares and
resulting economies of sales effort and expense.
 
PURCHASES BY REGISTERED INVESTMENT COMPANIES
 
This privilege is based upon the generally unsolicited nature of such  purchases
and the resulting lack of sales effort and expense.
 
PURCHASES  WITH  PROCEEDS FROM  REDEMPTION OF  UNRELATED  MUTUAL FUND  SHARES OR
SURRENDER OF CERTAIN FIXED ANNUITY CONTRACTS
 
SHAREHOLDERS OF UNRELATED MUTUAL FUNDS WITH SALES LOADS--This privilege is based
upon the  existing relationship  of  such persons  with their  broker-dealer  or
registered  representative  and/or  the familiarity  of  such  shareholders with
mutual funds as an investment concept, with resulting economies of sales  effort
and expense.
 
OWNERS  OF A FIXED ANNUITY  CONTRACT NOT DEEMED A  SECURITY UNDER THE SECURITIES
LAWS--This privilege is  based upon  the existing relationship  of such  persons
with   their  broker-dealer  or  registered   representative  and/or  the  lower
acquisition costs associated with such  sale, with resulting economies of  sales
effort and expense.
 
PURCHASES BY EMPLOYEES OF CERTAIN BANKS AND OTHER FINANCIAL SERVICES FIRMS
 
This privilege is based upon the familiarity of such investors with the Fund and
the resulting lack of sales effort and expense.
 
PURCHASES  BY INVESTMENT ADVISERS,  TRUST COMPANIES, AND  BANK TRUST DEPARTMENTS
EXERCISING DISCRETIONARY INVESTMENT AUTHORITY OR USING A MONEY MANAGEMENT MUTUAL
FUND "WRAP" PROGRAM
 
This privilege is based upon the familiarity of such investors with the Fund and
the resulting lack of sales effort and expense.
 
REDEMPTION
 
The obligation of the Fund to redeem its shares when called upon to do so by the
shareholder is mandatory with certain exceptions. The Fund will pay in cash  all
redemption  requests by any shareholder of  record, limited in amount during any
90-day period to the lesser of $250,000 or 1% of the net asset value of the Fund
at the beginning of  such period. When redemption  requests exceed such  amount,
however,  the Fund reserves the right to make  part or all of the payment in the
form of readily marketable securities or other assets of the Fund. An example of
when this might be  done is in  case of emergency, such  as in those  situations
enumerated  in the following paragraph, or at any time a cash distribution would
impair the liquidity of the Fund to the detriment of the existing  shareholders.
Any  securities being so distributed  would be valued in  the same manner as the
portfolio of the Fund is  valued. If the recipient  sold such securities, he  or
she probably would incur brokerage charges.
 
                                       40
<PAGE>
Redemption  of  shares, or  payment,  may be  suspended  at times  (a)  when the
Exchange is closed  for other than  customary weekend or  holiday closings,  (b)
when  trading on said Exchange is restricted, (c) when an emergency exists, as a
result of which disposal by the Fund of securities owned by it is not reasonably
practicable, or  it  is  not  reasonably practicable  for  the  Fund  fairly  to
determine  the value  of its  net assets,  or during  any other  period when the
Securities  and  Exchange  Commission,  by  order,  so  permits;  provided  that
applicable rules and regulations of the Securities and Exchange Commission shall
govern as to whether the conditions prescribed in (b) or (c) exist. The Exchange
is not open for business on the following holidays (nor on the nearest Monday or
Friday  if the holiday  falls on a weekend),  on which the  Fund will not redeem
shares: New Year's Day, Presidents' Day, Good Friday, Memorial Day, Independence
Day, Labor Day, Thanksgiving Day, and Christmas Day.
 
There is no charge for redemption, nor does the Fund contemplate establishing  a
charge,  although  it  has the  right  to do  so.  In  the event  a  charge were
established, it would apply only to  persons who became shareholders after  such
charge  was implemented, and  it would not, in  any event, exceed  1% of the net
asset value  of  the  shares  redeemed. Should  further  public  sales  ever  be
discontinued,  the  Fund  may  deduct  a  proportionate  share  of  the  cost of
liquidating assets from the asset value  of the shares being redeemed, in  order
to protect the equity of the other shareholders.
 
SYSTEMATIC WITHDRAWAL PLAN
 
An investor may open a "Systematic Withdrawal Plan" providing for withdrawals of
$50  or more  per quarter,  semiannually, or annually  if he  or she  has made a
minimum investment in Fund shares of $4,000  ($50 or more per month if at  least
$10,000  has been invested), or has  acquired and deposited shares having either
an original cost, or current value computed on the basis of the offering  price,
equal  to the appropriate amount.  The minimum amount which  may be withdrawn of
$50 per month is a minimum only, and should not be considered a recommendation.
 
These payments may  constitute return of  capital, and it  should be  understood
that  they do not  represent a yield or  return on investment  and that they may
deplete or  eliminate  the investment.  The  shareholder cannot  be  assured  of
receiving  payment for any specific period  because payments will terminate when
all shares have been redeemed.  The number of such  payments will depend on  the
amount  of each  payment, the  frequency of each  payment, and  the increase (or
decrease) in value of the remaining shares.
 
Under this Plan,  any distributions  of income  and realized  capital gains  are
reinvested  at net asset  value. If a shareholder  wishes to purchase additional
shares of the Fund under this Plan, other than by reinvestment of distributions,
it should be understood  that he or  she would be paying  a sales commission  on
such purchases, while liquidations effected under the Plan would be at net asset
value. Purchases of additional shares concurrent with withdrawals are ordinarily
disadvantageous to the shareholder because of sales charges and tax liabilities.
Additions to a shareholder account in which an election has been made to receive
systematic  withdrawals will be accepted only if  each such addition is equal to
at least one  year's scheduled withdrawals  or $1,200, whichever  is greater.  A
shareholder  may  not  have a  "Systematic  Withdrawal Plan"  and  a "Systematic
Investment Plan" in  effect simultaneously, as  it is not,  as explained  above,
advantageous to do so.
 
The  Plan  is  voluntary,  flexible, and  under  the  shareholder's  control and
direction at all times, and does not limit  or alter his or her right to  redeem
shares.  The  Plan  may be  terminated  in writing  at  any time  by  either the
shareholder or the Fund. The  cost of operating the  Plan is borne by  Advisers.
The  redemption of Fund  shares pursuant to the  Plan is a  taxable event to the
shareholder.
 
REINVESTMENT PRIVILEGE
 
In order to  allow investors  who have redeemed  Fund shares  an opportunity  to
reinvest,  without additional cost,  a one-time privilege  is offered whereby an
investor may  reinvest  in  the Fund,  or  in  any other  fund  underwritten  by
Investors  and available to the public, without a sales charge. The reinvestment
privilege must  be  exercised  in  an  amount  not  exceeding  the  proceeds  of
redemption;  must be  exercised within  60 days of  redemption; and  only may be
exercised once with respect to the Fund.
 
The purchase price for  Fund shares will  be based upon net  asset value at  the
time  of reinvestment, and may be more or less than the redemption value. Should
an investor  utilize  the reinvestment  privilege  within 30  days  following  a
redemption  which resulted in a loss,  all or a portion of  that loss may not be
currently  deductible   for  Federal   income  tax   purposes.  Exercising   the
reinvestment  privilege would  not alter  any capital  gains taxes  payable on a
realized  gain.  Furthermore,  if  a  shareholder  redeems  within  90  days  of
purchasing  the shares in the  Fund, the sales charge  incurred on that purchase
cannot be taken into account for  determining the shareholder's gain or loss  on
the sale of those shares.
 
TAXATION
 
The Portfolios qualified in the tax year ended September 30, 1996, and intend to
continue  to  qualify,  as  regulated investment  companies  under  the Internal
Revenue Code of 1986, as amended (the  "Code"). As long as they so qualify,  the
Portfolios are not taxed on the income distributed to shareholders.
 
For  individuals in taxable year 1997, long-term  capital gains are subject to a
maximum tax rate of 28%  while ordinary income is subject  to a maximum rate  of
39.6%  (for taxable  income in excess  of $271,050). (The  maximum effective tax
rate may be in excess of 39.6%, resulting from a combination of the nominal  tax
rate  and  a phase-out  of  personal exemptions  and  a partial  disallowance of
itemized deductions for individuals with taxable incomes above certain levels.)
 
Gain or loss realized  upon the sale of  shares in the Fund  will be treated  as
capital  gain or loss, provided  that the shares represented  a capital asset in
the hands of the shareholder. Such gain  or loss will be long-term capital  gain
or loss if the shares were held for more than one year.
 
                                       41
<PAGE>
Under  the Code, the Fund is required to withhold and remit to the U.S. Treasury
31% of dividend and capital gain income on the accounts of certain  shareholders
who  fail to provide a  correct tax identification number,  fail to certify that
they are not subject to backup withholding, or are subject to backup withholding
for some other reason.
 
Under the Code, interest  on indebtedness incurred or  continued to purchase  or
carry  shares of an investment company paying exempt-interest dividends, such as
the Fund, is not deductible by the  investor in proportion to the percentage  of
each  Portfolio's distributions  from investment  income and  short-term capital
gains that is exempt from federal  income tax. Minnesota law also restricts  the
deductibility  of interest on indebtedness incurred  or continued to purchase or
carry shares of the Fund.  Indebtedness may be allocated  to shares of the  Fund
even though not directly traceable to the purchase of such shares.
 
Any loss on the sale or exchange of shares held for six months or less (although
regulations  may reduce  this time  period to  31 days)  will be  disallowed for
Federal income tax purposes to the  extent of the amount of any  exempt-interest
dividend  received with respect to such  shares. Except to the extent disallowed
pursuant to the preceding sentence, any loss  on the sale or exchange of  shares
held  for six months or less will be  treated as a long-term capital loss to the
extent of the amount of any dividend received from long-term capital gains  with
respect to such shares. Similar rules apply in the case of individuals, estates,
and trusts under Minnesota law.
 
Certain  deductions otherwise  allowable to financial  institutions and property
and casualty insurance companies will be eliminated or reduced by reason of  the
receipt of certain exempt-interest dividends.
 
For  Federal income tax  purposes the National and  Minnesota Portfolios had the
following capital loss carryovers at September 30, 1996, which, if not offset by
subsequent capital  gains,  will  expire  in 2002  and  2003  for  the  National
Portfolio  and in  1997, 2002  through 2004 for  the Minnesota  Portfolio. It is
unlikely the  Board  of Directors  will  authorize  a distribution  of  any  net
realized  gains until the available capital  loss carryovers have been offset or
expired.
 
<TABLE>
<S>                  <C>
National
 Portfolio.........  $ 445,336
Minnesota
 Portfolio.........  $ 435,340
</TABLE>
 
If either Portfolio disposes  of a Municipal Obligation  that it acquired  after
April  30, 1993 at a market discount, it  must recognize any gain it realizes on
the disposition as ordinary income  (and not as capital  gain) to the extent  of
the accrued market discount.
 
If the Portfolios invest in options on securities, the marked-to-market rules of
the  Code may require them to recognize gains  and losses on options held by the
Portfolios at the end of the fiscal year. Under the marked-to-market rules,  60%
of  a net  capital gain or  loss recognized is  treated as long-term  and 40% as
short-term. In  addition,  if a  Portfolio  held offsetting  options  that  were
considered  a "straddle" for  purposes of the  Code, and those  options were not
subject to the marked-to-market rules described above, the straddle rules of the
Code would  require deferral  of certain  losses realized  on positions  of  the
straddle  to  the extent  that a  Portfolio had  unrealized gains  in offsetting
positions at year end.
 
If the Portfolios invest  in zero coupon obligations  upon their issuance,  such
obligations  will have original  issue discount in the  hands of the Portfolios.
Generally, original issue  discount equals  the difference  between the  "stated
redemption  price at maturity" of the obligation and its "issue price," as those
terms are defined  in the Code.  Similarly, if a  Portfolio acquires an  already
issued  zero coupon bond from another holder,  the bond will have original issue
discount in the Portfolio's hands, equal to the difference between the "adjusted
issue price" of the  bond at the  time the Portfolio acquires  it (that is,  the
original  issue price  of the  bond plus the  amount of  original issue discount
accrued to date) and its stated redemption price at maturity. In each case,  the
Portfolios  are required to accrue as ordinary interest income a portion of such
original issue discount even though the Portfolios receive no cash currently  as
interest  payments, on the obligation. Because  the Portfolios are each required
to distribute  substantially  all  of their  net  investment  income  (including
accrued  original issue  discount) in order  to qualify  as regulated investment
companies, the Portfolios may be required  to distribute an amount greater  than
the  total cash income the Portfolios actually receive. Accordingly, in order to
make the required distribution, the Portfolios  may be required to borrow or  to
liquidate   securities.  The  extent  to  which  the  Portfolios  may  liquidate
securities at a gain may be limited by the requirement that generally less  than
30%  of the Portfolios' gross income (on  an annual basis) must consist of gains
from the sale of securities held for less than three months.
 
The foregoing is a general discussion of the Federal income tax consequences  of
an  investment  in the  Fund  as of  the date  of  this Statement  of Additional
Information. Distributions  from net  investment income  and from  net  realized
capital  gains may also  be subject to  state and local  taxes. Shareholders are
urged to  consult their  own tax  advisers regarding  specific questions  as  to
Federal, state, or local taxes.
 
                                       42
<PAGE>
UNDERWRITER
 
On  December  6, 1996,  the  Board of  Directors  (including a  majority  of the
directors who are not parties to the contract, or interested persons of any such
party) reapproved  the  existing  Underwriting Agreement  with  Investors  dated
November  14, 1994, which became effective  November 14, 1994. This Underwriting
Agreement may be terminated by the Fund  or Investors at any time by the  giving
of  60 days' written  notice, and terminates  automatically in the  event of its
assignment. Unless sooner terminated, the Underwriting Agreement shall  continue
in  effect for  more than  two years after  its execution  only so  long as such
continuance is also approved by the vote of a majority of the directors who  are
not  parties  to  such Underwriting  Agreement,  or interested  persons  of such
parties, cast in person at  a meeting called for the  purpose of voting on  such
approval.
 
The Underwriting Agreement requires Investors or Advisers to pay all promotional
expenses  in connection  with the distribution  of the  Fund's shares, including
paying for printing and distributing prospectuses and shareholder reports to new
shareholders, and the costs of sales literature.
 
In the  Underwriting  Agreement,  Investors undertakes  to  indemnify  the  Fund
against  all costs  of litigation and  other legal proceedings,  and against any
liability incurred by or imposed upon the Fund  in any way arising out of or  in
connection  with the sale  or distribution of  the Fund's shares,  except to the
extent that such liability is the result of information which was obtainable  by
Investors only from persons affiliated with the Fund but not with Investors.
 
PLAN OF DISTRIBUTION
 
The  policy of having  the Fund compensate  those who sell  Fund shares has been
adopted pursuant to Rule 12b-1 under  the 1940 Act. Rule 12b-1(b) provides  that
any  payments made by the Fund in  connection with financing the distribution of
its shares may only be made pursuant to a written plan describing all aspects of
the proposed financing of  distribution, and also  requires that all  agreements
with  any person relating to the implementation  of the plan must be in writing.
in addition, Rule 12b-1(b)(1) requires that such plan be approved by a  majority
of  the Fund's outstanding shares, and Rule 12b-1(b)(1) requires that such plan,
together with any  related agreements, be  approved by  a vote of  the Board  of
Directors  who are  not interested  persons of  the fund  and have  no direct or
indirect interest in the operation of the  plan or in the agreements related  to
the  plan, cast in person at a meeting  called for the purpose of voting on such
plan or agreement. Rule 12b-1(b)(3) requires that the plan or agreement  provide
in substance:
 
     (i)  That it shall  continue in effect for  a period of  more than one year
from the date of its execution or  adoption only so long as such continuance  is
specifically  approved at least annually in  the manner described in a paragraph
(b)(3) of Rule 12b-1;
 
    (ii) That any person authorized to direct the disposition of monies paid  or
payable  by the fund pursuant to the plan or any related agreement shall provide
to the Board of Directors, and the directors shall review, at least quarterly, a
written report  of  the amounts  so  expended and  the  purpose for  which  such
expenditures were made; and
 
    (iii)  In the case of a plan, that it  may be terminated at any time by vote
of a majority of the  members of the Board of  Directors who are not  interested
persons  of the Fund  and have no  direct or indirect  financial interest in the
operation of the plan, or in any agreements related to the plan or by vote of  a
majority of the outstanding voting securities of the Fund.
 
Rule  12b-1(b)(4)  requires  that such  plans  may  not be  amended  to increase
materially the amount to be spent for distribution without shareholder  approval
and  that all  material amendments of  the plan  must be approved  in the manner
described in paragraph (b)(2) of Rule 12b-1.
 
Rule 12b-1(c) provides  that the  fund may  rely on  Rule 12b-1(b)  only if  the
selection  and  nomination  of  the  disinterested  directors  of  the  Fund are
committed to  the  discretion of  such  disinterested directors.  Rule  12b-1(c)
provides  that  the Fund  may  implement or  continue  a plan  pursuant  to Rule
12b-1(b) only  if the  directors  who vote  to  approve such  implementation  or
continuation  conclude, in the  exercise of reasonable  business judgment and in
light of their fiduciary duties under state law, and under Section 88(a) and (b)
of the  1940 Act,  that there  is a  reasonable likelihood  that the  plan  will
benefit the Fund and its shareholders.
 
The Board of Directors last approved the plan on December 5, 1996.
 
                                       43
<PAGE>
PERFORMANCE
 
The  National  and  Minnesota Portfolios'  yields  for the  30-day  period ended
September 30, 1996, respectively, were:
 
<TABLE>
<CAPTION>
                                               TAX-EXEMPT YIELDS
                                CLASS A   CLASS B   CLASS C   CLASS H   CLASS E
<S>                             <C>       <C>       <C>       <C>       <C>
National Portfolio                4.87%     4.27%     4.27%     4.27%     5.00%
Minnesota Portfolio               4.75%     4.23%     4.23%     4.23%     4.99%
</TABLE>
 
The National and Minnesota Portfolios' annualized tax-exempt yields for the same
period, assuming a Federal tax rate of 39.6%, and combined Minnesota/Federal tax
rate of 44.7%, the tax equivalent yields respectively were:
 
<TABLE>
<CAPTION>
                                             TAX-EQUIVALENT YIELDS
                                CLASS A   CLASS B   CLASS C   CLASS H   CLASS E
<S>                             <C>       <C>       <C>       <C>       <C>
National Portfolio                8.06%     7.07%     7.07%     7.07%     8.28%
Minnesota Portfolio               8.59%     7.65%     7.65%     7.65%     9.02%
</TABLE>
 
                                       44
<PAGE>
TAX-FREE NATIONAL PORTFOLIO
$1,000 SINGLE INVESTMENT
<TABLE>
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
                                        CLASS E
 
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     87            881                   4                  65                  950        -5.0%
     88            918                   4                 145                1,067        12.3%
     89            925                   4                 227                1,156         8.3%
     90            901                   4                 302                1,207         4.4%
     91            962                   4                 410                1,376        14.0%
     92            993                   4                 515                1,512         9.9%
     93          1,066                   4                 648                1,718        13.6%
     94            975                  10                 680                1,665        -3.1%
     95          1,007                  11                 801                1,819         9.2%
     96          1,010                  11                 901                1,922         5.7%
                                CUMULATIVE TOTAL RETURN                    Last 5 Years    39.7%
                                                                           Life of
                                                                           Portfolio       92.2%
                                        CLASS A
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     95          1,045                   1                  51                1,097         9.7%
     96          1,049                   1                 107                1,157         5.5%
                                                                           Life of
                                CUMULATIVE TOTAL RETURN                    Class           15.6%
                                        CLASS B
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     95          1,093                   1                  46                1,140        14.0%
     96          1,097                   1                  95                1,193         4.6%
                                                                           Life of
                                CUMULATIVE TOTAL RETURN                    Class           19.3%
                                        CLASS C
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     95          1,093                   1                  46                1,140        14.0%
     96          1,097                   1                  95                1,193         4.6%
                                                                           Life of
                                CUMULATIVE TOTAL RETURN                    Class           19.3%
                                        CLASS H
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     95          1,094                   1                  46                1,141        14.1%
     96          1,098                   1                  95                1,194         4.6%
                                                                           Life of
                                CUMULATIVE TOTAL RETURN                    Class           19.4%
</TABLE>
<TABLE>
<CAPTION>
                                                 AVERAGE ANNUAL TOTAL RETURN
                                 (Percentages based upon the above hypothetical investment)
<S>                <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>
 
<CAPTION>
  MOST RECENT:       1 YEAR     2 YEARS     3 YEARS     4 YEARS     5 YEARS     6 YEARS     7 YEARS     8 YEARS     9 YEARS
<S>                <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>
Class E                 0.93%       5.03%       2.24%       4.97%       5.95%       7.25%       6.83%       7.02%       7.60%
Class A                 0.71%       8.03%*        --          --          --          --          --          --          --
Class B (without
CDSC)                   4.65%       9.82%*        --          --          --          --          --          --          --
Class B (with
CDSC**)                 1.05%       8.05%*        --          --          --          --          --          --          --
Class C (without
CDSC)                   4.65%       9.82%*        --          --          --          --          --          --          --
Class C (with
CDSC**)                 3.65%       9.82%*        --          --          --          --          --          --          --
Class H (without
CDSC)                   4.64%       9.87%*        --          --          --          --          --          --          --
Class H (with
CDSC**)                 1.04%       8.09%*        --          --          --          --          --          --          --
 
<CAPTION>
<S>                <C>
  MOST RECENT:         10 YEARS
<S>                <C>
Class E                    6.75%
Class A                      --
Class B (without
CDSC)                        --
Class B (with
CDSC**)                      --
Class C (without
CDSC)                        --
Class C (with
CDSC**)                      --
Class H (without
CDSC)                        --
Class H (with
CDSC**)                      --
</TABLE>
 
 *Since November 14, 1994, date shares were first offered to the public.
**With CDSC assumes redemption on September 30, 1996
Cumulative total  return is  the  increase in  value  of a  hypothetical  $1,000
investment  made at the beginning of the  advertised period. It may be expressed
in terms  of  dollars  or  percentage.  Average  annual  return  is  the  annual
compounded rate of return based upon the same hypothetical investment. The above
tables  each include reduction due  to the maximum 4.5%  sales charge and assume
quarterly reinvestment  of all  dividend and  capital gains  distributions.  Had
dividends  and capital  gains distributions been  taken in cash,  with no shares
being acquired through reinvestment, the cash  payments for Classes E, A, B,  C,
and  H for the period would have been  $8, $1, $1, $1, and $1, respectively, for
capital gains distributions and $611, $101, $90, $90, and $90, respectively  for
income  dividends, and the value  of the shares as  of September 30, 1996, would
have been $1,010, $1,049, $1,097,  $1,097 and $1,098, respectively. All  figures
are  based  upon historical  earnings and  are not  intended to  indicate future
performance. Investment return and share  value fluctuate so that an  investor's
shares,  when redeemed, may be  worth more or less  than their original cost. No
adjustment has been made for a  shareholder's income tax liability on  dividends
or capital gains.
 
                                       45
<PAGE>
TAX-FREE MINNESOTA PORTFOLIO
$1,000 SINGLE INVESTMENT
<TABLE>
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
                                        CLASS E
 
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     87            875                   0                  64                  939        -6.1%
     88            908                   0                 139                1,047        11.5%
     89            907                   0                 217                1,124         7.4%
     90            894                   0                 289                1,183         5.2%
     91            938                   0                 387                1,325        12.0%
     92            963                   0                 485                1,448         9.3%
     93          1,021                   0                 604                1,625        12.2%
     94            952                   0                 649                1,601        -1.5%
     95            975                   0                 760                1,735         6.8%
     96            971                   0                 851                1,822        13.8%
                                CUMULATIVE TOTAL RETURN                    Last 5 Years    37.5%
                                                                           Life of
                                                                           Class           82.2%
                                        CLASS A
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     95          1,030                   0                  50                1,080         8.0%
     96          1,026                   0                 106                1,132         4.8%
                                                                           Life of
                                CUMULATIVE TOTAL RETURN                    Class           13.2%
                                        CLASS B
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     95          1,075                   0                  46                1,121        12.1%
     96          1,072                   0                  94                1,166         4.0%
                                                                           Life of
                                CUMULATIVE TOTAL RETURN                    Class           16.6%
                                        CLASS C
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     95          1,077                   0                  46                1,123        12.3%
     96          1,074                   0                  94                1,168         4.0%
                                                                           Life of
                                CUMULATIVE TOTAL RETURN                    Class           16.8%
                                        CLASS H
<CAPTION>
                 VALUE OF           REINVESTED
PERIOD ENDED     INITIAL             CAPITAL                                  TOTAL
 SEPTEMBER        $1,000              GAINS             REINVESTED          CUMULATIVE    % YEARLY
    30,        INVESTMENT($)   +   DISTRIBUTIONS   +    DIVIDENDS      =     VALUE($)      CHANGE
<S>            <C>            <C>  <C>            <C>  <C>            <C>  <C>            <C>
     95          1,079                   0                  46                1,125        12.5%
     96          1,074                   0                  95                1,169         3.9%
                                                                           Life of
                                CUMULATIVE TOTAL RETURN                    Class           16.9%
</TABLE>
<TABLE>
<CAPTION>
                                                 AVERAGE ANNUAL TOTAL RETURN
                                 (Percentages based upon the above hypothetical investment)
<S>                <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>
 
<CAPTION>
  MOST RECENT:       1 YEAR     2 YEARS     3 YEARS     4 YEARS     5 YEARS     6 YEARS     7 YEARS     8 YEARS     9 YEARS
<S>                <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>
Class E                 0.28%       4.24%       2.30%       4.71%       5.61%       6.65%       6.45%       6.55%       7.10%
Class A                 0.60%       6.83%*        --          --          --          --          --          --          --
Class B (without
CDSC)                   4.04%       8.53%*        --          --          --          --          --          --          --
Class B (with
CDSC**)                 0.44%       6.73%*        --          --          --          --          --          --          --
Class C (without
CDSC)                   4.00%       8.61%*        --          --          --          --          --          --          --
Class C (with
CDSC**)                 3.00%       8.61%*        --          --          --          --          --          --          --
Class H (without
CDSC)                   3.93%       8.63%*        --          --          --          --          --          --          --
Class H (with
CDSC**)                 0.33%       6.84%*        --          --          --          --          --          --          --
 
<CAPTION>
<S>                <C>
  MOST RECENT:         10 YEARS
<S>                <C>
Class E                    6.18%
Class A                      --
Class B (without
CDSC)                        --
Class B (with
CDSC**)                      --
Class C (without
CDSC)                        --
Class C (with
CDSC**)                      --
Class H (without
CDSC)                        --
Class H (with
CDSC**)                      --
</TABLE>
 
 *Since November 14, 1994, date shares were first offered to the public.
**With CDSC assumes redemption on September 30, 1996.
Cumulative  total  return is  the  increase in  value  of a  hypothetical $1,000
investment made at the beginning of  the advertised period. It may be  expressed
in  terms  of  dollars  or  percentage.  Average  annual  return  is  the annual
compounded rate of return based upon the same hypothetical investment. The above
tables each include reduction  due to the maximum  4.5% sales charge and  assume
quarterly  reinvestment  of all  dividend and  capital gains  distributions. Had
dividends and capital  gains distributions been  taken in cash,  with no  shares
being  acquired through reinvestment, the cash payments  for Classes E, A, B, C,
and H for the period would have been  $0, $0, $0, $0, and $0, respectively,  for
capital gains distributions and $593, $101, $90, $90, and $90, respectively, for
income  dividends, and the value  of the shares as  of September 30, 1996, would
have been $971, $1,026, $1,072, $1,074 and $1,074, respectively. All figures are
based  upon  historical  earnings  and  are  not  intended  to  indicate  future
performance.  Investment return and share value  fluctuate so that an investor's
shares, when redeemed, may be  worth more or less  than their original cost.  No
adjustment  has been made for a  shareholder's income tax liability on dividends
or capital gains.
 
                                       46
<PAGE>
TAX-EXEMPT VERSUS TAXABLE INCOME
 
The following tables show the yield that taxable investments would have to  earn
to  equal tax-exempt income earned by an investment in the National Portfolio or
the Minnesota Portfolio Portfolio, respectively. The tax-exempt yields shown are
for illustrative purposes only and are not indicative of the Funds' yields.
<TABLE>
<CAPTION>
                                            NATIONAL PORTFOLIO
                                                                          TAX-EXEMPT YIELDS
                                                           -----------------------------------------------
                                                           4.00%     5.00%     6.00%     7.00%     8.00%
 
             FEDERAL TAXABLE
              INCOME BRACKET                FEDERAL TAX
   JOINT RETURNS         SINGLE RETURNS         RATE                  TAXABLE EQUIVALENT YIELDS
- --------------------  --------------------  ------------   -----------------------------------------------
<S>                   <C>                   <C>            <C>       <C>       <C>       <C>       <C>
          $0-$41,200             $0-24,650      15%        4.71%     5.88%     7.06%     8.24%     9.41%
     $41,200-$99,600       $24,650-$59,750      28%        5.56%     6.94%     8.33%     9.72%     11.11%
    $99,600-$151,750      $59,750-$124,650      31%        5.80%     7.25%     8.70%     10.14%    11.59%
   $151,750-$271,050     $124,650-$271,050      36%        6.25%     7.81%     9.38%     10.94%    12.50%
       Over $271,050         Over $271,050    39.6%        6.62%     8.28%     9.93%     11.59%    13.25%
 
                                           MINNESOTA PORTFOLIO
 
<CAPTION>
 
                                                                          TAX-EXEMPT YIELDS
                                                           -----------------------------------------------
<S>                   <C>                   <C>            <C>       <C>       <C>       <C>       <C>
                                                           4.00%     5.00%     6.00%     7.00%     8.00%
<CAPTION>
 
                                            APPROXIMATE
                                              COMBINED
             FEDERAL TAXABLE                 STATE AND
              INCOME BRACKET                FEDERAL TAX
   JOINT RETURNS         SINGLE RETURNS         RATE                  TAXABLE EQUIVALENT YIELDS
- --------------------  --------------------  ------------   -----------------------------------------------
<S>                   <C>                   <C>            <C>       <C>       <C>       <C>       <C>
          $0-$23,690            $0-$15,520    20.1%        5.01%     6.26%     7.51%     8.76%     10.01%
     $23,690-$41,200       $15,520-$24,650    21.8%        5.12%     6.39%     7.67%     8.95%     10.23%
     $41,200-$88,420       $24,650-$50,240    33.8%        6.04%     7.55%     9.06%     10.57%    12.08%
     $88,420-$99,600       $50,240-$59,750    34.1%        6.07%     7.59%     9.10%     10.62%    12.14%
    $99,600-$151,750      $59,750-$124,650    36.9%        6.44%     7.92%     9.50%     11.09%    12.68%
   $151,750-$271,050     $124,650-$271,050    41.4%        6.83%     8.53%     10.24%    11.95%    13.65%
       Over $271,050         Over $271,050    44.7%        7.23%     9.04%     10.85%    12.66%    14.47%
</TABLE>
 
The tax rates shown above are based on federal and Minnesota tax rates in effect
in 1997. In the  tables for Minnesota Portfolio,  the combined tax rates  assume
that  state  and local  income taxes  paid are  deducted in  calculating federal
taxable income. The tables do  not reflect the federal  and state rules for  the
phase-out  of  personal exemptions  and deductions.  For  years after  1997, the
federal and Minnesota  tax bracket amounts  will be adjusted  for inflation.  If
these  scheduled changes  take effect,  they will  result in  slightly different
taxable equivalent  yields for  1998 and  later years  than those  shown in  the
tables.
 
"Tax  equivalent yield" is  computed by dividing the  portion of the Portfolio's
yield which is tax-exempt by one minus a stated income tax rate and then  adding
the result to the non tax-exempt portion of the Portfolio's yield.
 
While  yield may be compared to that  of "CDs" (insured, fixed rate certificates
of deposit issued by financial institutions), the Portfolios' yield is not fixed
and an investment in the Portfolios is not insured.
 
Cumulative total return is computed by finding the cumulative compounded rate of
return over the  period indicated  in the  advertisement that  would equate  the
initial  amount  invested  to  the ending  redeemable  value,  according  to the
following formula:
 
         ERV + P
CRT =   ( -------)  100
            P
 
   Where:  CTR   = Cumulative total return
           ERV   = ending redeemable value
                   at the end of the period
                   of a hypothetical $1,000
                   payment made at the
                   beginning of such
                   period; and
           P     = initial payment of
                   $1,000
 
                                       47
<PAGE>
This calculation  assumes  all  dividends and  capital  gain  distributions  are
reinvested at net asset value on the appropriate reinvestment dates as described
in  the Prospectus and includes all  recurring fees, such as investment advisory
and management fees, charged to all shareholder accounts.
 
Average annual total return figures are  computed by finding the average  annual
compounded  rates of return over the periods indicated in the advertisement that
would equate  the  initial  amount  invested to  the  ending  redeemable  value,
according to the following formula:
 
     P(1+T)(n)  =  ERV
 
   Where:  P     = a hypothetical initial
                   payment of $1,000
           T     = average annual total
                   return;
           n     = number of years; and
           ERV   = ending redeemable value
                   at the end of the period
                   of a hypothetical $1,000
                   payment made at the
                   beginning of such
                   period.
 
This  calculation deducts the maximum sales charge from the initial hypothetical
$1,000 investment, assumes  all dividends  and capital  gains distributions  are
reinvested at net asset value on the appropriate reinvestment dates as described
in  the Prospectus, and includes all recurring fees, such as investment advisory
and management fees, charged to all shareholder accounts.
 
Yield is computed by  dividing the net investment  income per share (as  defined
under  Securities and Exchange  Commission rules and  regulations) earned during
the computation period by the maximum offering  price per share on the last  day
of the period, according to the following formula:
 
                  [(   (a-b) )]    6
       Yield = 2 [(    ----- )]       - 1
                  [(    cd   )]
 
   Where:  a     = dividends and interest earned
                   during the period;
           b     = expenses accrued for the
                   period (net of
                   reimbursements);
           c     = the average daily number of
                   shares outstanding during the
                   period that were entitled to
                   receive dividends; and
           d     = the maximum offering price per
                   share on the last day of the
                   period.
 
As  noted in the Prospectus, the Fund  may advertise its relative performance as
compiled by outside organizations or refer to publications which have  mentioned
its performance.
 
Following is a list of ratings services which may be referred to, along with the
category  in which the Fund  is included. Because some  of these services do not
take into account sales charges, their  ratings may sometimes be different  than
had they done so:
 
<TABLE>
<CAPTION>
RATINGS SERVICE                                                     CATEGORY
- ------------------------------------------------------------------  ----------------------------------------------------------------
<S>                                                                 <C>
Lipper Analytical Services, Inc.                                    general municipal bond
Wiesenberger Investment Companies Services                          U.S. Government Securities
Morningstar Publications, Inc.                                      municipal bond -- general
Johnson's Charts                                                    municipal bond
CDA Technologies, Inc.                                              municipal bond
</TABLE>
 
                                       48
<PAGE>
Following is a list of the publications whose articles may be referred to:
 
AMERICAN BANKER (The)
AP-DOW Jones News Service
ASSOCIATED PRESS (The)
BARRON'S
BETTER INVESTING
BOARDROOM REPORTS
BOND BUYER & CREDIT MARKETS (The)
BOND BUYER (The)
BONDWEEK
BUSINESS MONTH
BUSINESS WEEK
CABLE NEWS NETWORK
CASHFLOW MAGAZINE
CFO
CHICAGO TRIBUNE (The)
CHRISTIAN SCIENCE MONITOR
CITY BUSINESS/CORPORATE REPORT
CITYBUSINESS PUBLICATIONS
COMMERCIAL & FINANCIAL CHRONICLE
CONSUMER GUIDE
CORPORATE FINANCE
DALLAS MORNING NEWS
DOLLARS & SENSE
DOW-JONES NEWS SERVICE
ECONOMIST (The)
EQUITY INTERNATIONAL
EUROMONEY
FINANCIAL EXECUTIVE
FINANCIAL PLANNING
FINANCIAL SERVICES WEEK
FINANCIAL TIMES
FINANCIAL WORLD
FORBES
FORTUNE
FUTURES
GLOBAL FINANCE
GLOBAL INVESTOR
INDUSTRY WEEK
INSTITUTIONAL INVESTOR
INTERNATIONAL HERALD TRIBUNE
INVESTMENT DEALER'S DIGEST
INVESTOR'S BUSINESS DAILY
KIPLINGER PERSONAL FINANCE
KIPLINGER CALIF. LETTER (The)
KIPLINGER FLORIDA LETTER
KIPLINGER TEXAS LETTER
KIPLINGER WASHINGTON LETTER (The)
KNIGHT/RIDDER FINANCIAL
LA TIMES
LIPPER ANALYTICAL SERVICES
MARKET CHRONICLE
MINNEAPOLIS STAR TRIBUNE
MONEY
MONEY MANAGEMENT LETTER
MOODY'S INVESTORS SERVICE, INC.
NATIONAL THRIFT NEWS
NATIONAL UNDERWRITER
NELSON'S RESEARCH MONTHLY
NEW YORK DAILY NEWS
NEW YORK NEWSDAY
NEW YORK TIMES (The)
NEWSWEEK
NIGHTLY BUSINESS REPORT (The)
PENSION WORLD
PENSIONS & INVESTMENT AGE
PERSONAL INVESTOR
PORTFOLIO LETTER
REGISTERED REPRESENTATIVE
RUETERS
SECURITIES PRODUCT NEWS
SECURITIES WEEK
SECURITY TRADERS HANDBOOK
SAINT PAUL PIONEER PRESS
STANDARD & POOR'S CORPORATION
STANGER'S INVESTMENT ADVISOR
STANGER'S SELLING MUTUAL FUNDS
STOCK MARKET MAGAZINE (The)
TIME
TRUSTS & ESTATES
U.S. NEWS & WORLD REPORT
UNITED PRESS INTERNATIONAL
USA TODAY
WALL STREET JOURNAL (The)
WASHINGTON POST (The)
FORTIS BENEFITS INSURANCE COMPANY
WOODBURY BULLETIN
WIESENBERGER INVESTMENT COMPANIES
  SERVICES
 
                                       49
<PAGE>
FINANCIAL STATEMENTS
 
The  financial statements included as  part of the Fund's  1996 Annual Report to
Shareholders, filed with  the Securities  and Exchange  Commission in  December,
1996,  are incorporated herein by reference.  The Annual Report accompanies this
Statement of Additional Information.
 
CUSTODIAN; COUNSEL; ACCOUNTANTS
 
First Bank National Association, First Bank Place, Minneapolis, MN 55480 acts as
custodian of the Fund's assets and  portfolio securities; Dorsey & Whitney  LLP,
220  South  Sixth  Street, Minneapolis,  MN  55402, is  the  independent General
Counsel  for  the  Fund;  and  KPMG  Peat  Marwick  LLP,  4200  Norwest  Center,
Minneapolis, MN 55402, acts as the Fund's independent auditors.
 
LIMITATION OF DIRECTOR LIABILITY
 
Under  Minnesota  law, each  director of  Fortis  Income owes  certain fiduciary
duties to it and to its shareholders.
 
Minnesota law  provides that  a  director "shall  discharge  the duties  of  the
position of director in good faith, in a manner the director reasonably believes
to  be in the best interest of the  corporation, and with the care an ordinarily
prudent person in a like  position would exercise under similar  circumstances."
Fiduciary  duties of a  director of a  Minnesota corporation include, therefore,
both a duty of "loyalty"  (to act in good faith  and act in a manner  reasonably
believed  to be in the  best interests of the corporation)  and a duty of "care"
(to act with  the care an  ordinarily prudent  person in a  like position  would
exercise  under similar circumstances). Minnesota law authorizes corporations to
eliminate or limit the  personal liability of a  director to the corporation  or
its  shareholders  for monetary  damages  for breach  of  the fiduciary  duty of
"care." Minnesota law does  not, however, permit a  corporation to eliminate  or
limit  the liability of a director (i) for  any breach of the director's duty of
"loyalty" to the corporation or its shareholders, (ii) for acts or omissions not
in good faith or that involve  intentional misconduct or a knowing violation  of
law,  (iii) for authorizing a dividend,  stock repurchase or redemption or other
distribution  in  violation  of  Minnesota  law  or  for  violation  of  certain
provisions  of Minnesota securities laws, or (iv) for any transaction from which
the director derived an improper personal benefit. The Articles of Incorporation
of Fortis  Income  limit  the  liability of  directors  to  the  fullest  extent
permitted  by Minnesota  statutes, except  to the  extent that  such a liability
cannot be  limited  as  provided  in  the 1940  Act  (which  act  prohibits  any
provisions  which purport to limit the  liability of directors arising from such
directors'  willful  misfeasance,  bad  faith,  gross  negligence,  or  reckless
disregard of the duties involved in the conduct of their role as directors).
 
Minnesota  law does not eliminate the duty of "care" imposed upon a director. It
only authorizes a corporation to eliminate monetary liability for violations  of
that  duty. Minnesota law, further, does not permit elimination or limitation of
liability of  "officers"  to the  corporation  for  breach of  their  duties  as
officers  (including the liability of directors who serve as officers for breach
of their  duties as  officers). Minnesota  law does  not permit  elimination  or
limitation  of  the  availability of  equitable  relief, such  as  injunctive or
rescissionary relief.  Further, Minnesota  law does  not permit  elimination  or
limitation  of a director's  liability under the  Securities Act of  1933 or the
Securities Exchange Act of 1934, and it is uncertain whether and to what  extent
the  elimination  of monetary  liability would  extend  to violations  of duties
imposed on directors by the 1940 Act and the rules and regulations adopted under
such act.
 
ADDITIONAL INFORMATION
 
The Fund has filed with the Securities and Exchange Commission, Washington, D.C.
20549, a Registration Statement  under the Securities Act  of 1933, as  amended,
with  respect  to  the common  stock  offered  hereby. The  Prospectus  and this
Statement of Additional Information  do not contain all  of the information  set
forth  in  the Registration  Statement, certain  parts of  which are  omitted in
accordance with  Rules  and  Regulations of  the  Commission.  The  Registration
Statement  may be  inspected at  the principal office  of the  Commission at 450
Fifth Street, N.W., Washington,  D.C., and copies thereof  may be obtained  from
the Commission at prescribed rates.
 
                                       50
<PAGE>

PART C - OTHER INFORMATION

ITEM 24.(A) FINANCIAL STATEMENTS:

     The following financial statements are included in the registration
     statement:

          Financial Statements included in Part A:

               Financial Highlights 

          Financial Statements included in Part B:

               All financial statements required by Part B were incorporated
               therein by reference to Registrant's 1996 Annual Report to
               Shareholders.

ITEM 24.(B)  EXHIBITS:

     (1)  Copy of the charter as now in effect;

                    ***

     (2)  Copies of the existing by-laws or instruments corresponding thereto;

                    *

     (3)  Copies of any voting trust agreement with respect to more than 5
          percent of any class of equity securities of the Registrant;

                    Inapplicable

     (4)  Copies of all instruments defining the rights of holders of the
          securities being registered including, where applicable, a relevant
          portion of the articles of incorporation or by-laws of the Registrant;

                    See Item 24(b)(1)

     (5)  Copies of all investment advisory contracts relating to the management
          of the assets of the Registrant;

                    *

     (6)  Copies of each underwriting or distribution contract between the
          Registrant and a principal underwriter, and specimens or copies of all
          agreements between principal underwriters and dealers;

                    ***

     (7)  Copies of all bonus, profit sharing, pension or other similar
          contracts or arrangements wholly or partly for the benefit of
          directors or officers of the Registrant in their capacity as such; if
          any such plan is not set forth in a formal document, furnish a
          reasonably detailed description thereof;

                    Inapplicable
<PAGE>

     (8)  Copies of all custodian agreements, and depository contracts under
          Section 17(f) of the 1940 Act, with respect to securities and similar
          investments of the Registrant, including the schedule of remuneration;

                    *

     (9)  Copies of all other material contracts not made in the ordinary course
          of business which are to be performed in whole or in part at or after
          the date of filing the Registration Statement;

                    Inapplicable

     (10) An opinion and consent of counsel as to the legality of the securities
          being registered, indicating whether they will when sold be legally
          issued, fully paid and non-assessable;

                    Inapplicable

     (11) Copies of any other opinions, appraisals or rulings and consents to
          the use thereof relied on in the preparation of this Registration
          Statement and required by Section 7 of the 1933 Act;

                    Auditor's consent - attached

     (12) All financial statements omitted from Item 23;

                    Inapplicable

     (13) Copies of any agreements or understandings made in consideration for
          providing the initial capital between or among the Registrant, the
          underwriter, adviser, promoter or initial stockholders and written
          assurances from promoters or initial stockholders that their purchases
          were made for investment purposes without any present intention of
          redeeming or reselling;

                    Inapplicable

     (14) Copies of the model plan used in the establishment of any retirement
          plan in conjunction with which Registrant offers its securities, any
          instructions thereto and any other documents making up the model plan.
          Such form(s) should disclose the costs and fees charged in connection
          therewith;

                    Inapplicable

     (15) Copies of any plan entered into by Registrant pursuant to rule 12b-1
          of the 1940 Act, which describes all material aspects of the financing
          of distribution of Registrant's shares, and any agreement with any
          person relating to implementation of such plan.

                    Attached

     (16) Schedule for computation of each performance quotation provided in the
          Registration Statement in response to Item 22 (which need not be
          audited).

                    **

     (17) A Financial Data Schedule meeting the requirements of Rule 483 under
          the Securities Act of 1933.
<PAGE>

          Attached

     (18) Copies of any plan entered into by Registrant pursuant to Rule 18f-3
          under the 1940 Act, any agreement with any person relating to the
          implementation of a plan, any amendment to a plan or agreement, and a
          copy of the portion of the minutes of a meeting of the Registrant's
          directors describing any action taken to revoke a plan.

          Incorporated by reference to Post Effective Amendment Number 18 to    
          Registrant's Registration Statement, filed with the Securities and    
          Exchange Commission in January 1996.



________________________________

*Incorporated by reference to Post-Effective Amendment Number 13 to Registrant's
registration statement, filed with the Securities and Exchange Commission in
November, 1992.

**Incorporated by reference to Post-Effective Amendment Number 12 to
Registrant's registration statement, filed with the Securities and Exchange
Commission in November, 1991.

***Incorporated by reference to Post-Effective Amendment Number 16 to
Registrant's registration statement, filed with the Securities and Exchange
Commission in November, 1994.

ITEM 25.  PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT

Furnish a list or diagram of all persons directly or indirectly controlled by or
under common control with the Registrant and as to each person indicate (1) if a
company, the state or other sovereign power under the laws of which it is
organized, and (2) the percentage of voting securities owned or other basis of
control by the person, if any, immediately controlling it.

Inapplicable

ITEM 26.  NUMBER OF HOLDERS OF SECURITIES

State in substantially the tabular form indicated, as of a specified date within
90 days prior to the date of filing, the number of record holders of each class
of securities of the Registrant:

     Title of Class                     Number of Record Holders
     --------------                     ------------------------

      National Portfolio Common         Class E: 1,999
                                        Class A: 243
                                        Class B: 57
                                        Class C: 44
                                        Class H: 104
                                        (12/31/96)
               
      Minnesota Portfolio Common        Class E: 1,363
                                        Class A: 122
                                        Class B: 36
                                        Class C: 17
                                        Class H: 30
                                        (12/31/96)
<PAGE>

ITEM 27.  INDEMNIFICATION

State the general effect of any contract, arrangement or statute under which any
director, officer, underwriter or affiliated person of the Registrant is insured
or indemnified in any manner against any liability which may be incurred in such
capacity, other than insurance provided by any director, officer, affiliated
person or underwriter for their own protection.

Incorporated by reference to Post Effective Amendment Number 8 to Registrant's
Registration Statement, filed with the Securities and Exchange Commission in
February, 1988.


ITEM 28.  BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER

Describe any other business, profession, vocation, or employment of a
substantial nature in which each investment adviser of the Registrant, and each
director, officer, or partner of any such investment adviser, is or has been, at
any time during the past two fiscal years, engaged for his own account or in the
capacity of director, officer, employee, partner, or trustee.

See Statement of Additional Information constituting part B hereof.  In
addition, the following is furnished.

                                                       Other business,
                                                       professions, vocations,
                                                       or employments of a
                    Current Position                   substantial nature
Name                With Advisers                      during past two years
- ----                -------------                      ---------------------

Michael D.          Qualified Plan Officer             Qualified Plan Officer of
O'Connor                                               Fortis Benefits Insurance
                                                       Company.

Item 29.  Principal Underwriters

     (a)  Furnish the name of each investment company (other than the
Registrant) for which each principal underwriter currently distributing
securities of the Registrant also acts as a principal underwriter, depositor, or
investment adviser.

    Fortis Advantage Portfolios, Inc.
    Fortis Equity Portfolios, Inc.
    Fortis Fiduciary Fund, Inc.
    Fortis Growth Fund, Inc.
    Fortis Money Portfolios, Inc.
    Fortis Securities, Inc.
    Fortis Series Fund, Inc.
    Fortis Income Portfolios, Inc.
    Fortis Worldwide Portfolios, Inc.
    Variable Account C of Fortis Benefits Insurance Company
    Variable Account D of Fortis Benefits Insurance Company

     In addition to those listed under "Directors and Executive Officers" in the
<PAGE>

Statement of Additional Information:

Name and Principal       Positions and Offices         Positions and Offices
Business Address         with Underwriter              with Registrant      
- ------------------       ---------------------         ---------------------

Carol M. Houghtby*       2nd Vice President and        Accounting Officer
                         Treasurer


__________________________________________________

*The business address of these persons is 500 Bielenberg Drive, Woodbury, MN  
55125

(c)  Furnish the information required by the following table with respect to all
commissions and other compensation received by each principal underwriter who is
not an affiliated person of the Registrant or an affiliated person of such an
affiliated person, directly or indirectly, from the Registrant during the
Registrant's last fiscal year.

     Inapplicable

ITEM 30.  LOCATION OF ACCOUNTS AND RECORDS

With respect to each account, book or other document required to be maintained
by Section 31(a) of the 1940 Act and the Rules (17 CFR 270, 31a-1 to 31a-3)
promulgated thereunder, furnish the name and address of each person maintaining
physical possession of each such account, book or other document.

Fortis Advisers, Inc., 500 Bielenberg Drive, Woodbury, Minnesota  55125

ITEM 31.  MANAGEMENT SERVICES

Furnish a summary of the substantive provisions of any management-related
service contract not discussed in Part I of this Form (because the contract was
not believed to be material to a purchaser of securities of the Registrant)
under which services are provided to the Registrant, indicating the parties to
the contract, the total dollars paid and by whom, for the last three fiscal
years.

Inapplicable

ITEM 32.  UNDERTAKINGS


Furnish the following undertakings in substantially the following form in all
initial Registration Statements filed under the 1993 Act:

     (a)  An undertaking to file an amendment to the Registration Statement with
certified financial statements showing the initial capital received before
accepting subscriptions from any person in excess of 25 if Registrant proposes
to raise its initial capital pursuant to Section 14(a)(3) of the 1940 Act;

     Inapplicable

     (b)  An undertaking to file a post-effective amendment, using financial
statement which need not be certified, within four to six months from the
effective date of Registrant's 1933 act Registration Statement.

     Inapplicable
<PAGE>

     (c)  If the information called for by Item 5A is contained in the latest
annual report to shareholders, an undertaking 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.

     We undertake 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. 
<PAGE>

Pursuant to the requirements of the Securities Act of 1933 and the Investment
Company Act of 1940, the Registrant has duly caused this Post-Effective
Amendment to its Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Woodbury, State of
Minnesota, on January 31, 1997.

                         Fortis Tax-Free Portfolios, Inc.

                         By:   /s/ Dean C. Kopperud
                            ------------------------------
                              Dean C. Kopperud, President

     Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment to Registration Statement has been signed below by the
following persons in the capacities and on the dates shown.

Signature and Title  
- ---------------------

      /s/ Dean C. Kopperud                   Dated January 31, 1997
- --------------------------------------------
Dean C. Kopperud, President
(principal executive officer)


      /s/ Tamara L. Fagely                   Dated January 31, 1997
- --------------------------------------------
Tamara L. Fagely, Treasurer
(principal financial and accounting officer)

Richard W. Cutting*
Director

Allan R. Freedman*
Director

Robert M. Gavin*
Director

Benjamin S. Jaffray*
Director

Jean L. King*
Director

Edward M. Mahoney*
Director

Thomas R. Pellett*
Director
                                                 /s/ Dean C. Kopperud
                                             -------------------------------
Robb L. Prince*                              Dean C. Kopperud, Director
Director                                     Pro Se and Attorney-in-Fact

Leonard J. Santow*
Director                                   Dated: January 31, 1997

Joseph M. Wikler*
Director
*Registrant's directors executing Power of Attorney dated March 21, 1996. 

<PAGE>

[KPMG PEAT MARWICK LLP LETTERHEAD]



                          INDEPENDENT AUDITORS' CONSENT
                                        
                                        
                                        
The Board of Directors
Fortis Tax-Free Portfolios, Inc.


We consent to the use of our report incorporated herein by reference and the
references to our Firm under the headings "Financial Highlights" in Part A and
"Custodian; Counsel; Accountants" in Part B of the Registration Statement.





                                        KPMG Peat Marwick LLP


Minneapolis, Minnesota
January 31, 1997 

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 20 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 011
   <NAME> NATIONAL PORTFOLIO (CLASS A)
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1996
<PERIOD-START>                             OCT-01-1995
<PERIOD-END>                               SEP-30-1996
<INVESTMENTS-AT-COST>                       71,897,230
<INVESTMENTS-AT-VALUE>                      75,707,746
<RECEIVABLES>                                1,161,870
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                            19,743
<TOTAL-ASSETS>                              76,889,359
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      179,571
<TOTAL-LIABILITIES>                            179,571
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    73,371,358
<SHARES-COMMON-STOCK>                          580,484
<SHARES-COMMON-PRIOR>                          168,770
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                        (26,750)
<ACCUMULATED-NET-GAINS>                      (445,336)
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<PER-SHARE-GAIN-APPREC>                           0.04
<PER-SHARE-DIVIDEND>                            (0.53)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.75
<EXPENSE-RATIO>                                   1.18
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 20 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 012
   <NAME> NATIONAL PORTFOLIO (CLASS B)
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<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1996
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<EXPENSES-NET>                               (756,322)
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<REALIZED-GAINS-CURRENT>                       685,982
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<AVERAGE-NET-ASSETS>                        76,131,000
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<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 20 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 013
   <NAME> NATIONAL PORTFOLIO (CLASS C)
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1996
<PERIOD-START>                             OCT-01-1995
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<INVESTMENTS-AT-COST>                       71,897,230
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<OVERDISTRIBUTION-NII>                        (26,750)
<ACCUMULATED-NET-GAINS>                      (445,336)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     3,810,516
<NET-ASSETS>                                76,709,788
<DIVIDEND-INCOME>                                    0
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<OTHER-INCOME>                                       0
<EXPENSES-NET>                               (756,322)
<NET-INVESTMENT-INCOME>                      3,891,276
<REALIZED-GAINS-CURRENT>                       685,982
<APPREC-INCREASE-CURRENT>                    (471,072)
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<NET-CHANGE-IN-ASSETS>                       1,841,164
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<PER-SHARE-NAV-BEGIN>                            10.70
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</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 20 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 014
   <NAME> NATIONAL PORTFOLIO (CLASS E)
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1996
<PERIOD-START>                             OCT-01-1995
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<EXPENSES-NET>                               (756,322)
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<REALIZED-GAINS-CURRENT>                       685,982
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<PER-SHARE-NAV-BEGIN>                            10.72
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<EXPENSE-RATIO>                                   0.93
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<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 20 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 015
   <NAME> NATIONAL PORTFOLIO (CLASS H)
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1996
<PERIOD-START>                             OCT-01-1995
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<INVESTMENTS-AT-COST>                       71,897,230
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<REALIZED-GAINS-CURRENT>                       685,982
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<EXPENSE-RATIO>                                   1.93
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</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 21 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 021
   <NAME> MINNESOTA PORTFOLIO (CLASS A)
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
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<PERIOD-START>                             OCT-01-1995
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<INVESTMENTS-AT-COST>                       50,679,376
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<ACCUMULATED-NII-CURRENT>                            0
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<OVERDISTRIBUTION-GAINS>                             0
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<NET-ASSETS>                                53,465,316
<DIVIDEND-INCOME>                                    0
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<EXPENSE-RATIO>                                   1.18
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</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 21 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 022
   <NAME> MINNESOTA PORTFOLIO (CLASS B)
<MULTIPLIER> 1
       
<S>                             <C>
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</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 21 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 023
   <NAME> MINNESOTA PORTFOLIO (CLASS C)
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
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<INVESTMENTS-AT-COST>                       50,679,376
<INVESTMENTS-AT-VALUE>                      52,760,653
<RECEIVABLES>                                1,779,835
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                            18,366
<TOTAL-ASSETS>                              54,558,854
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<NUMBER-OF-SHARES-REDEEMED>                    (6,577)
<SHARES-REINVESTED>                                769
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<ACCUMULATED-GAINS-PRIOR>                    (369,995)
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<PER-SHARE-NAV-BEGIN>                            10.30
<PER-SHARE-NII>                                   0.44
<PER-SHARE-GAIN-APPREC>                         (0.04)
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</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 21 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 024
   <NAME> MINNESOTA PORTFOLIO (CLASS E)
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<S>                             <C>
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<FISCAL-YEAR-END>                          SEP-30-1996
<PERIOD-START>                             OCT-01-1995
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<INVESTMENTS-AT-COST>                       50,679,376
<INVESTMENTS-AT-VALUE>                      52,760,653
<RECEIVABLES>                                1,779,835
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<OTHER-ITEMS-ASSETS>                            18,366
<TOTAL-ASSETS>                              54,558,854
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<PAID-IN-CAPITAL-COMMON>                    51,828,882
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</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES, STATEMENT OF OPERATIONS, AND STATEMENT OF
CHANGES IN NET ASSETS FOUND ON PAGES 13 THROUGH 21 OF THE ANNUAL SHAREHOLDER
REPORT.
</LEGEND>
<CIK> 0000703708
<NAME> FORTIS TAX-FREE PORTFOLIOS, INC.
<SERIES>
   <NUMBER> 025
   <NAME> MINNESOTA PORTFOLIO (CLASS H)
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1996
<PERIOD-START>                             OCT-01-1995
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<INVESTMENTS-AT-COST>                       50,679,376
<INVESTMENTS-AT-VALUE>                      52,760,653
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<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                         (8,830)
<ACCUMULATED-NET-GAINS>                      (436,013)
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<NET-ASSETS>                                53,465,316
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</TABLE>


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