MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
497, 1997-05-02
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VARIABLE ANNUITY CONTRACT PROSPECTUS
FLEXIBLE PAYMENT VARIABLE ANNUITY CONTRACT
SINGLE PAYMENT VARIABLE ANNUITY CONTRACT
OF MINNESOTA MUTUAL'S VARIABLE ANNUITY ACCOUNT
 
COMBINATION FIXED AND VARIABLE ANNUITY CONTRACTS
FOR PERSONAL RETIREMENT PLANS
 
The  individual  variable  annuity  contracts  offered  by  this  Prospectus are
designed for use in connection with personal retirement plans, some of which may
qualify for federal income tax advantages available under sections 401, 403, 408
or 457  of the  Internal  Revenue Code.  They  may also  be  used apart  from  a
qualified  plan. Two  different contracts  are offered:  (1) a  Flexible Payment
Variable Annuity  Contract (no  minimum  initial purchase  payment), and  (2)  a
Single  Payment Variable Annuity  Contract (minimum initial  purchase payment of
$5,000 and may not exceed $250,000, except with our consent).
 
  The owner of a  contract may elect  to have contract  values accumulated on  a
completely  variable basis,  on a completely  fixed basis (as  part of Minnesota
Mutual's General Account and in which  the safety of principal and interest  are
guaranteed)  or on a  combination fixed and  variable basis. To  the extent that
contract values are accumulated on a variable basis, they will be a part of  the
Variable  Annuity Account.  The Variable Annuity  Account invests  its assets in
shares of Advantus  Series Fund, Inc.  and Class 2  of the Templeton  Developing
Markets  Fund (the "Funds"). The variable accumulation value of the contract and
the amount of  each variable annuity  payment will vary  in accordance with  the
performance of the Portfolio or Portfolios of the Funds selected by the contract
owner.  The  contract owner  bears the  entire investment  risk for  any amounts
allocated to the Portfolios of the Fund.
 
  This Prospectus  sets  forth  concisely the  information  that  a  prospective
investor  should know before  investing in the Variable  Annuity Account, and it
should be  read  and  kept  for future  reference.  A  Statement  of  Additional
Information, bearing the same date, which contains further contract information,
has  been filed with the Securities  and Exchange Commission and is incorporated
by reference  into  this Prospectus.  A  copy  of the  Statement  of  Additional
Information  may be  obtained without  charge by  calling (612)  665-3500, or by
writing Minnesota  Mutual  at its  principal  office at  Minnesota  Mutual  Life
Center,  400 Robert  Street North,  St. Paul,  Minnesota 55101-2098.  A Table of
Contents for the Statement of Additional Information appears in this  Prospectus
on page 33.
 
This Prospectus is not valid unless attached to a current prospectus of Advantus
Series Fund, Inc. and the Templeton Developing Markets Fund.
 
THESE  SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES AND
EXCHANGE COMMISSION, NOR HAS THE COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY
OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
THIS PROSPECTUS SHOULD BE READ CAREFULLY AND RETAINED FOR FUTURE REFERENCE.
 
LOGO
The Minnesota Mutual Life Insurance Company
400 Robert Street North
St. Paul, MN 55101-2098
Ph 612/665-3500
http://www.minnesotamutual.com
 
The date of this document and the Statement of Additional Information is: May 1,
1997
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TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                      Page
<S>                                                                                 <C>
Special Terms.....................................................................          3
 
Questions and Answers About the Variable Annuity Contracts........................          4
 
Expense Table.....................................................................          9
 
Condensed Financial Information...................................................         13
 
Performance Data..................................................................         15
 
General Descriptions
    The Minnesota Mutual Life Insurance Company...................................         16
    Variable Annuity Account......................................................         16
    Advantus Series Fund, Inc.....................................................         16
    Templeton Variable Products Series Fund.......................................         17
    Additions, Deletions or Substitutions.........................................         18
 
Contract Charges
    Sales Charges.................................................................         18
    Mortality and Expense Risk Charges............................................         19
 
Exchange Offer....................................................................         20
 
Voting Rights.....................................................................         20
 
Description of the Contracts
    General Provisions............................................................         21
    Annuity Payments and Options..................................................         22
    Death Benefits................................................................         26
    Purchase Payments, Value of the Contract and Transfers........................         26
    Redemptions...................................................................         28
 
Federal Tax Status................................................................         29
 
Restrictions Under the Texas Optional Retirement Program..........................         33
 
Statement of Additional Information...............................................         33
 
Appendix A--Illustration of Variable Annuity Values...............................         34
</TABLE>
 
THIS  PROSPECTUS DOES  NOT CONSTITUTE AN  OFFERING IN ANY  JURISDICTION IN WHICH
SUCH OFFERING MAY NOT LAWFULLY BE MADE. NO DEALER, SALESMAN, OR OTHER PERSON  IS
AUTHORIZED  TO GIVE  ANY INFORMATION OR  MAKE ANY  REPRESENTATIONS IN CONNECTION
WITH THIS OFFERING OTHER THAN THOSE  CONTAINED IN THE PROSPECTUS, AND, IF  GIVEN
OR MADE, SUCH OTHER INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON.
 
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SPECIAL TERMS
 
As used in this Prospectus, the following terms have the indicated meanings:
 
ACCUMULATION  UNIT:  an  accounting device  used  to  determine the  value  of a
contract before annuity payments begin.
 
ACCUMULATION VALUE:  the sum  of your  values under  a contract  in the  General
Account and in the Variable Annuity Account.
 
ANNUITANT: the person who may receive lifetime benefits under the contract.
 
ANNUITY:  a  series of  payments for  life; for  life with  a minimum  number of
payments guaranteed; for the joint lifetime of the annuitant and another  person
and thereafter during the lifetime of the survivor; or for a period certain.
 
ANNUITY  UNIT:  an accounting  device used  to determine  the amount  of annuity
payments.
 
CODE: the Internal Revenue Code of 1986, as amended.
 
CONTRACT OWNER: the  owner of the  contract, which could  be the annuitant,  his
employer, or a trustee acting on behalf of the employer.
 
CONTRACT  YEAR:  a period  of one  year beginning  with the  contract date  or a
contract anniversary.
 
FIXED  ANNUITY:  an  annuity  providing  for  payments  of  guaranteed   amounts
throughout the payment period.
 
FUND:  the mutual fund  or separate investment portfolio  within a series mutual
fund which we have designated as an eligible investment for the Variable Annuity
Account, namely, Advantus Series  Fund, Inc. and its  Portfolios and Class 2  of
the Templeton Developing Markets Fund.
 
GENERAL  ACCOUNT: all  of our  assets other than  those in  the Variable Annuity
Account or in other separate accounts established by us.
 
PLAN: a tax-qualified employer pension, profit-sharing, or annuity purchase plan
under which  benefits are  to  be provided  by  the variable  annuity  contracts
described herein.
 
PURCHASE PAYMENTS: amounts paid to us under a contract.
 
VALUATION DATE: each date on which a Fund Portfolio is valued.
 
VARIABLE  ANNUITY ACCOUNT:  a separate  investment account  called the Minnesota
Mutual Variable Annuity Account, where  the investment experience of its  assets
is kept separate from our other assets.
 
VARIABLE  ANNUITY:  an  annuity  providing for  payments  varying  in  amount in
accordance with the investment experience of the Fund.
 
WE, OUR, US: The Minnesota Mutual Life Insurance Company.
 
YOU, YOUR: the Contract Owner.
 
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QUESTIONS AND ANSWERS ABOUT THE VARIABLE ANNUITY CONTRACTS
 
WHAT IS AN ANNUITY?
An  annuity is a series of payments for  life; for life with a minimum number of
payments guaranteed; for the joint lifetime of the annuitant and another  person
and  thereafter during the lifetime of the survivor; or for a period certain. An
annuity with  payments which  are guaranteed  as to  amount during  the  payment
period  is  a fixed  annuity. An  annuity  with payments  which vary  during the
payment period  in  accordance with  the  investment experience  of  a  separate
account is called a variable annuity.
 
WHAT ARE THE CONTRACTS OFFERED BY THIS PROSPECTUS?
The  contracts are  combined fixed and  variable annuity contracts  issued by us
which provide for monthly annuity payments. These payments may begin immediately
or at a future  date elected by  you. Purchase payments received  by us under  a
contract  are  allocated  either  to our  General  Account  or  Variable Annuity
Account, as specified  by you. In  the General Account,  your purchase  payments
receive interest and principal guarantees; in the Variable Annuity Account, your
purchase  payments  are  invested  in  each Fund,  and  receive  no  interest or
principal guarantees.
  This Prospectus describes only the  variable aspects of the contracts,  except
where  fixed aspects are specifically mentioned.  Please look to the language of
the contracts for a description of the fixed portion of the contracts. For  more
information  on the contracts, see the heading "Description of the Contracts" in
this Prospectus.
 
WHAT TYPES OF VARIABLE ANNUITY CONTRACTS ARE AVAILABLE?
We offer two types  of contracts. They are  the single payment variable  annuity
contract and the flexible payment variable annuity contract.
 
WHAT INVESTMENT OPTIONS ARE AVAILABLE FOR THE VARIABLE ANNUITY ACCOUNT?
Purchase  payments allocated to the Variable  Annuity Account may be invested in
shares of each Fund. Each Fund is a mutual fund of the series type, which  means
that  it has several different portfolios which it offers for investment. Shares
of the Fund will be  made available at net asset  value to the Variable  Annuity
Account  to fund the  variable annuity contracts.  The Fund is  also required to
redeem its shares at  net asset value  at our request. We  reserve the right  to
add, combine or remove other eligible funds.
  The  investment  objectives  and certain  policies  of the  Portfolios  of the
Advantus Series Fund are as follows:
      The Growth Portfolio seeks the long-term accumulation of capital.  Current
    income, while a factor in portfolio selection, is a secondary objective. The
    Growth  Portfolio will  invest primarily in  common stocks  and other equity
    securities. Common stocks are more volatile than debt securities and involve
    greater investment risk.
      The Bond Portfolio seeks as high a level of long-term total rate of return
    as is consistent with prudent investment  risk. A secondary objective is  to
    seek  preservation of capital.  The Bond Portfolio  will invest primarily in
    long-term, fixed-income, high-quality  debt instruments. The  value of  debt
    securities  will tend to rise  and fall inversely with  the rise and fall of
    interest rates.
      The Money  Market Portfolio  seeks maximum  current income  to the  extent
    consistent  with liquidity  and the stability  of capital.  The Money Market
    Portfolio will invest in money market instruments and other debt  securities
    with  maturities  not  exceeding  one year.  The  return  produced  by these
    securities will reflect fluctuation in short-term interest rates.
      AN INVESTMENT  IN  THE  MONEY  MARKET PORTFOLIO  IS  NEITHER  INSURED  NOR
    GUARANTEED  BY THE U.S.  GOVERNMENT AND THERE  CAN BE NO  ASSURANCE THAT THE
    PORTFOLIO WILL BE ABLE  TO MAINTAIN A  STABLE NET ASSET  VALUE OF $1.00  PER
    SHARE.
      The  Asset Allocation Portfolio  seeks as high a  level of long-term total
    rate of return  as is  consistent with  prudent investment  risk. The  Asset
    Allocation   Portfolio  will  invest  in  common  stocks  and  other  equity
    securities,  bonds  and  money  market  instruments.  The  Asset  Allocation
    Portfolio  involves  the risks  inherent in  stocks  and debt  securities of
    varying maturities and the  risk that the Portfolio  may invest too much  or
    too little of its assets in each type of security at any particular time.
      The  Mortgage Securities  Portfolio seeks a  high level  of current income
    consistent with prudent investment risk.  In pursuit of this objective,  the
    Mortgage  Securities Portfolio will follow  a policy of investment primarily
    in mortgage-related securities. Prices  of mortgage-related securities  will
 
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    tend  to rise and fall inversely with the rise and fall of the general level
    of interest rates.
      The Index 500 Portfolio seeks investment results that correspond generally
    to the price  and yield  performance of the  common stocks  included in  the
    Standard & Poor's Corporation 500 Composite Stock Price Index (the "Index").
    It  is designed to provide an economical and convenient means of maintaining
    a broad  position in  the equity  market as  part of  an overall  investment
    strategy.  All common stocks, including those  in the Index, involve greater
    investment risk  than  debt securities.  The  fact  that a  stock  has  been
    included  in the Index affords no assurance against declines in the price or
    yield performance of that stock.
      The Capital Appreciation  Portfolio seeks growth  of capital.  Investments
    will be made based upon their potential for capital appreciation. Therefore,
    current  income  will  be incidental  to  the objective  of  capital growth.
    Because of the market risks inherent in any equity investment, the selection
    of securities on the basis of their appreciation possibilities cannot ensure
    against possible loss in value.
      The International  Stock  Portfolio  seeks long-term  capital  growth.  In
    pursuit  of this objective, the International  Stock Portfolio will follow a
    policy of investing in stocks issued by companies, large and small, and debt
    obligations of companies and governments outside the United States.  Current
    income  will be incidental to the objective of capital growth. The Portfolio
    is designed  for persons  seeking international  diversification.  Investors
    should  consider carefully  the substantial  risks involved  in investing in
    securities issued by companies and governments of foreign nations, which are
    in addition to the usual risks inherent in domestic investments.
      The Small Company  Portfolio seeks long-term  accumulation of capital.  In
    pursuit  of this objective, the Small Company Portfolio will follow a policy
    of investing  primarily  in  common  or preferred  stocks  issued  by  small
    companies,  defined  in  terms  of  either  market  capitalization  or gross
    revenues. Investments in small companies usually involve greater  investment
    risks than fixed income securities or corporate equity securities generally.
    Small  companies will  typically have a  market capitalization  of less than
    $1.5 billion or annual gross revenues of less than $1.5 billion.
      The Value Stock Portfolio seeks the long-term accumulation of capital.  In
    pursuit of this objective, the Value Stock Portfolio will follow a policy of
    investing  primarily in  the equity  securities of  companies which,  in the
    opinion of the  adviser, have  market values  which appear  low relative  to
    their  underlying value  or future earnings  and growth potential.  As it is
    anticipated that the Portfolio will consist in large part of dividend-paying
    common stocks, the production of income will be a secondary objective of the
    Portfolio.
      The Maturing  Government  Bond  Portfolios  seek to  provide  as  high  an
    investment  return  as  is consistent  with  prudent investment  risk  for a
    specified period of time ending on a specified liquidation date. In  pursuit
    of this objective, each of the four Maturing Government Bond Portfolios seek
    to  return a reasonably  assured targeted dollar  amount, predictable at the
    time of  investment,  on  a  specific target  date  in  the  future  through
    investment  in  a portfolio  composed primarily  of zero  coupon securities.
    These are securities that pay no cash income and are sold at a discount from
    their par value at maturity. The current target dates for the maturities  of
    these  Portfolios are 1998,  2002, 2006 and  2010, respectively. On maturity
    the Portfolio will be converted to  cash and reinvested at the direction  of
    the  contract owner.  In the  absence of  instructions, liquidation proceeds
    will be allocated to the Money Market Portfolio.
      The Small  Company Value  Portfolio seeks  the long-term  accumulation  of
    capital.  The Portfolio will  follow a policy of  investing primarily in the
    equity  securities  of   small  companies,  defined   in  terms  of   market
    capitalization and which appear to have market values which are low relative
    to  their underlying value or future earnings and growth potential. Dividend
    income will be incidental to the investment objective for this Portfolio.
      The  International  Bond  Portfolio  seeks  to  maximize  current   income
    consistent with protection of principal. The Portfolio pursues its objective
    by  investing  primarily  in a  managed  portfolio of  non-U.S.  dollar debt
    securities  issued  by  foreign  governments,  companies  and  supranational
    entities.
 
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      The  Index  400  Mid-Cap  Portfolio seeks  to  provide  investment results
    generally corresponding to the aggregate  price and dividend performance  of
    publicly  traded common stocks  that comprise the Standard  & Poor's 400 Mid
    Cap Index.  The  Portfolio pursues  its  investment objective  by  investing
    primarily  in  the 400  common  stocks that  comprise  the Index,  issued by
    medium-sized domestic companies with  market capitalizations that  generally
    range  from  $200  million to  $5  billion.  It is  designed  to  provide an
    economical and convenient  means of maintaining  a diversified portfolio  in
    this  equity security area  as part of an  over-all investment strategy. The
    inclusion of a stock in the Index in no way implies an opinion by Standard &
    Poor's as to its attractiveness as an investment, nor is it a sponsor or  in
    any way affiliated with the Portfolio.
      The  Micro-Cap Value  Portfolio seeks capital  appreciation. The Portfolio
    will pursue  its  objective  by  investing in  a  diversified  portfolio  of
    securities  that the sub-advisor believes to  be undervalued. It will invest
    primarily in common  stocks and  stock equivalents  of micro-cap  companies,
    that is, companies with a market capitalization of less than $300 million.
      The  Macro-Cap  Value Portfolio  seeks to  provide  high total  return. It
    pursues  this  objective  by  investing   in  equity  securities  that   the
    sub-adviser  believes, through  the use of  dividend discount  models, to be
    undervalued  relative  to  their   long-term  earnings  power,  creating   a
    diversified  portfolio  of equity  securities  which typically  will  have a
    price/earnings ratio  and  a price  to  book  ratio that  reflects  a  value
    orientation.  The Portfolio  seeks to enhance  its total  return relative to
    that of a universe of large-sized U.S. companies.
      The Micro-Cap Growth  Portfolio seeks long-term  capital appreciation.  It
    pursues its objective by investing primarily in equity securities of smaller
    companies   which  the  sub-adviser  believes  are  in  an  early  stage  or
    transitional point in their  development and have  demonstrated or have  the
    potential  for above  average revenue  growth. It  will invest  primarily in
    common stocks  and  stock  equivalents  of  micro-cap  companies,  that  is,
    companies with a market capitalization of less than $300 million.
  ALTHOUGH  THE  SMALL  COMPANY VALUE,  THE  INTERNATIONAL BOND,  THE  INDEX 400
MID-CAP, THE  MICRO-CAP VALUE,  THE  MACRO-CAP VALUE  AND THE  MICRO-CAP  GROWTH
PORTFOLIOS  OF  THE FUND  ARE  INCLUDED IN  THIS  PROSPECTUS, THEY  WILL  NOT BE
AVAILABLE IN THE CONTRACT UNTIL OCTOBER 1, 1997.
  In addition  to the  investments in  the Advantus  Series Fund,  the  Variable
Annuity  Account invests in the Templeton Developing Markets Fund, a diversified
portfolio with two classes of shares  of the Templeton Variable Products  Series
Fund, a mutual fund of the series type.
  ALTHOUGH  THE TEMPLETON DEVELOPING MARKETS FUND IS INCLUDED IN THIS PROSPECTUS
IT WILL NOT BE AVAILABLE IN THE CONTRACT UNTIL OCTOBER 1, 1997.
  The investment objectives  and certain  policies of  the Templeton  Developing
Markets Fund available under the contract are as follows:
      The   Templeton   Developing   Markets   Fund   seeks   long-term  capital
    appreciation. It pursues  this objective  by investing  primarily in  equity
    securities  of  issuers in  countries  having developing  markets. Countries
    generally considered to have developing  markets are all countries that  are
    considered  to be developing or emerging countries by the International Bank
    for Reconstruction and Development (more  commonly referred to as the  World
    Bank)  or the International  Finance Corporation, as  well as countries that
    are classified  by  the  United  Nations  or  otherwise  regarded  by  their
    authorities as developing.
  There  is  no assurance  that any  Fund will  meet its  objectives. Additional
information concerning the investment objectives and policies of the  Portfolios
can  be found in the current prospectus for each Fund, which is attached to this
Prospectus.  A  person  should  carefully  read  the  Fund's  Prospectus  before
investing in the contract.
 
CAN YOU CHANGE THE PORTFOLIO SELECTED?
Yes.  You may change  your allocation of  future purchase payments  by giving us
written notice  or a  telephone call  notifying  us of  the change.  And  before
annuity  payments begin,  you may  transfer all or  a part  of your accumulation
value from  one Portfolio  to another  or among  the Portfolios.  After  annuity
payments  begin, transfers may be made with respect to variable annuity payments
and, subject  to some  restrictions, amounts  held as  annuity reserves  may  be
transferred among the variable annuity
 
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sub-accounts  and the  Funds. Annuity  reserves may  be transferred  only from a
variable annuity to a fixed annuity during the annuity period.
 
WHAT CHARGES ARE ASSOCIATED WITH THE CONTRACTS?
We deduct from the net  asset value of the  Variable Annuity Account an  amount,
computed  daily, equal to an annual rate of 1.25% for mortality and expense risk
guarantees. This  total  represents a  charge  of  .80% for  our  assumption  of
mortality  risks and .45%  for our assumption  of expense risks.  We reserve the
right to increase the  charge for the  assumption of expense  risks to not  more
than .60%. If this charge is increased to this maximum amount, then the total of
the mortality risk and expense risk charge would be 1.40% on an annual rate.
  In  addition, Advantus Capital  Management, Inc., ("Advantus  Capital") one of
our subsidiaries, acts as  the investment adviser to  the Advantus Series  Fund,
Inc.  and deducts from the net  asset value of each Portfolio  of the Fund a fee
for its services which are provided under an investment advisory agreement.  The
investment  advisory agreements with Advantus Capital provide that the fee shall
be computed at the  annual rate which may  not exceed .4% of  the Index 500  and
Index  400 Micro-Cap Portfolios, .75% of  the Capital Appreciation, Value Stock,
Small Company Value and the Small Company Portfolios, 1.0% of the  International
Stock  Portfolio .6% of  the International Bond Portfolio,  .7% of the Macro-Cap
Value Portfolio,  1.1%  of the  Micro-Cap  Growth  Portfolio and  1.25%  of  the
Micro-Cap  Value Portfolio and .5% of  each of the remaining Portfolio's average
daily net  assets  other  than  the Maturing  Government  Bond  Portfolios.  The
Maturing  Government Bond Portfolios pay an advisory fee equal to an annual rate
of .25% of  average daily net  assets, however, the  Portfolio which matures  in
1998  will pay a  rate of .05%  from its inception  to April 30,  1998, and .25%
thereafter and the Portfolio which matures in 2002 will pay a rate of .05%  from
its  inception  to April  30, 1998,  and  .25% thereafter  of average  daily net
assets.
  The Funds are subject to certain expenses that may be incurred with respect to
their operations and those expenses are allocated among the Portfolios. For more
information, see  the prospectuses  of each  Fund, which  are attached  to  this
Prospectus.  The Templeton Developing  Markets Fund pays  its investment adviser
management fees at  an annual  rate of  1.25% of  the Fund's  average daily  net
assets and pays other operating expenses which will vary every year but, for the
most  recent  fiscal  year, were  0.53%  of  its average  daily  net  assets. In
addition, Class 2 of the Templeton Developing Markets Fund has a rule 12b-1 plan
and may  pay  up  to  0.25%  annually  of  the  average  daily  net  assets  for
distribution. For more information, see the Fund's prospectus.
  In  addition, a deferred sales charge may apply. Deductions for any applicable
premium taxes may also be  made (currently such taxes  range from 0.0% to  3.5%)
depending upon applicable law.
  For  more information on  charges, see the heading  'Contract Charges' in this
Prospectus. The deferred sales charge is discussed below.
 
WHAT IS THE DEFERRED SALES CHARGE?
We deduct a deferred sales charge  on contract withdrawals, surrenders and  some
annuity  elections during the first ten  contract years for expenses relating to
the sale of the contracts. The amount  of any deferred sales charge is  deducted
from the accumulation value.
  Under  the flexible payment variable annuity  contract, the amount of deferred
sales charge, as a percentage of the amount surrendered, withdrawn or applied to
provide an annuity, decreases uniformly during the first ten contract years from
an initial charge of 9% to no charge after ten contract years.
  Under the single payment variable annuity contract, the amount of the deferred
sales charge, as a percentage of the amount surrendered, withdrawn or applied to
provide an annuity, decreases uniformly during the first ten contract years from
an initial charge of 6% to no charge after ten contract years.
  The deferred sales charge is not  applicable to some partial withdrawals  from
the  contracts. Also, there is  no deferred sales charge  on amounts paid in the
event of the death of the owner and the accumulation value is applied to provide
annuity payments under an option where  benefits are expected to continue for  a
period  of at  least five years.  For more  information on this  charge, see the
heading "Sales Charges" in this Prospectus.
 
CAN YOU MAKE PARTIAL WITHDRAWALS FROM THE CONTRACT?
Yes. You may make withdrawals of the accumulation value of your contract  before
an annuity begins. Partial withdrawals must be pursuant to your written request.
  Partial  withdrawals  are  generally  subject to  the  deferred  sales charge.
However, if
 
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withdrawals during the first calendar year are equal to or less than 10% of  the
purchase  payments made  during the  first calendar  year and,  if in subsequent
calendar years they are equal to or  less than 10% of the accumulation value  at
the  end of the previous calendar year, the deferred sales charge will not apply
to those partial  withdrawals. The  deferred sales charge  described above  will
apply  to all withdrawal amounts which exceed  10% of that accumulation value in
any calendar year. In addition, a  penalty tax may be assessed upon  withdrawals
from  variable annuity contracts in certain circumstances. For more information,
see the heading "Federal Tax Status" in this Prospectus.
 
DO YOU HAVE A RIGHT TO CANCEL THE CONTRACT?
Yes. You may cancel the contract any time within ten days of your receipt of the
contract by  returning  it  to  us  or your  agent.  In  some  states,  such  as
California,  the free look period may be  extended. In California, the free look
period is extended  to thirty days'  time for contracts  issued or delivered  to
owners  that are  sixty years  of age or  older at  the time  of delivery. These
rights are subject to change and may vary among the states.
 
IS THERE A GUARANTEED DEATH BENEFIT?
Yes. The single payment variable annuity contract has a guaranteed death benefit
if you die  before annuity  payments have started.  The death  benefit shall  be
equal  to the greater  of: (1) the  amount of the  accumulation value payable at
death; or (2) the  amount of the  total purchase payment paid  to us during  the
first year as consideration for this contract, less all contract withdrawals. As
a  matter of  company practice,  we use this  method except  that total purchase
payment will include  all contributions,  even those  made after  12 months,  to
determine the death benefit for all contracts offered by this Prospectus.
 
WHAT ANNUITY OPTIONS ARE AVAILABLE?
The  contracts  specify  several annuity  options.  Each annuity  option  may be
elected on either a variable  annuity or fixed annuity  or a combination of  the
two.  Other annuity options may  be available from us  on request. The specified
annuity options are  a life annuity;  a life  annuity with a  period certain  of
either  120 months, 180 months or 240  months; a joint and last survivor annuity
and a period certain annuity.
 
WHAT IF THE OWNER DIES?
If you die  before payments begin,  we will  pay the accumulation  value of  the
contract  as a  death benefit  to the named  beneficiary. If  the annuitant dies
after annuity payments  have begun, we  will pay whatever  death benefit may  be
called for by the terms of the annuity option selected.
  If  the owner of this contract is other than a natural person, such as a trust
or other similar entity, we will pay  a death benefit of the accumulation  value
to the named beneficiary on the death of the annuitant, if death occurs prior to
the date for annuity payments to begin.
 
WHAT VOTING RIGHTS DO YOU HAVE?
Contract  owners and  annuitants will  be able to  direct us  as to  how to vote
shares of  the  underlying  Fund  held for  their  contracts  where  shareholder
approval is required by law in the affairs of the Funds.
 
8
<PAGE>
EXPENSE TABLE
The tables shown below are to assist a contract owner in understanding the costs
and  expenses  that  a  contract  will bear  directly  or  indirectly.  For more
information on contract costs and expenses, see the Prospectus heading "Contract
Charges" and the information immediately  following. The table does not  reflect
deductions for any applicable premium taxes which may be made from each purchase
payment  depending upon  the applicable  law. Surrender  amounts in  years shown
reflect the contract owner's ability to withdraw an amount equal to ten  percent
of  the accumulation value at the end  of the previous calendar year without the
imposition of the deferred  sales charge. The tables  show the expenses of  each
Fund after expense reimbursement.
  The  following  contract expense  information  is intended  to  illustrate the
expenses of the  MultiOption Annuity  variable annuity  contracts. All  expenses
shown are rounded to the nearest dollar. The information contained in the tables
must be considered with the narrative information which immediately follows them
in this heading.
 
CONTRACT OWNER TRANSACTION EXPENSES
SINGLE PAYMENT DEFERRED VARIABLE ANNUITY CONTRACT
 
<TABLE>
<S>                                                                <C>
    Deferred Sales Load (as a percentage of amount                          6%
      surrendered)...............................................  decreasing uniformly
                                                                   by .05% for each of
                                                                   the first 120 months
                                                                    from the contract
                                                                           date
    SEPARATE ACCOUNT ANNUAL EXPENSES
    (as a percentage of average account value)
    Mortality and Expense Risk Fees..............................         1.25%
                                                                          -----
        Total Separate Account Annual Expenses...................         1.25%
                                                                          -----
                                                                          -----
</TABLE>
 
FLEXIBLE PAYMENT DEFERRED VARIABLE ANNUITY CONTRACT
 
<TABLE>
<S>                                                                <C>
    Deferred Sales Load (as a percentage of amount                          9%
      surrendered)...............................................  decreasing uniformly
                                                                   by .075% for each of
                                                                   the first 120 months
                                                                    from the contract
                                                                           date
    SEPARATE ACCOUNT ANNUAL EXPENSES
    (as a percentage of average account value)
    Mortality and Expense Risk Fees..............................         1.25%
                                                                          -----
        Total Separate Account Annual Expenses...................         1.25%
                                                                          -----
                                                                          -----
</TABLE>
 
                                                                               9
<PAGE>
FUND ANNUAL EXPENSES
 
(As  a percentage of average net assets  for the described Advantus Series Fund,
Inc. Portfolios and the Templeton Variable Product Series.)
 
<TABLE>
<CAPTION>
                                                                        OTHER                              TOTAL FUND
                                                                      EXPENSES                           ANNUAL EXPENSES
                                                                   (AFTER EXPENSE                        (AFTER EXPENSE
                                              INVESTMENT           REIMBURSEMENTS      DISTRIBUTION      REIMBURSEMENTS
                                            MANAGEMENT FEES            IF ANY)           EXPENSES            IF ANY)
                                         ---------------------  ---------------------  -------------  ---------------------
<S>                                      <C>                    <C>                    <C>            <C>
Advantus Series Fund, Inc.:
  Growth Portfolio.....................            0.50%                  0.09%             --                  0.59%
  Bond Portfolio.......................            0.50%                  0.06%             --                  0.56%
  Money Market Portfolio...............            0.50%                  0.10%             --                  0.60%
  Asset Allocation Portfolio...........            0.50%                  0.04%             --                  0.54%
  Mortgage Securities Portfolio........            0.50%                  0.08%             --                  0.58%
  Index 500 Portfolio..................            0.40%                  0.05%             --                  0.45%
  Capital Appreciation Portfolio.......            0.75%                  0.10%             --                  0.85%
  International Stock Portfolio........            0.74%                  0.32%             --                  1.06%
  Small Company Portfolio..............            0.75%                  0.06%             --                  0.81%
  Maturing Government Bond 1998
    Portfolio (1)(2)...................            0.05%                  0.15%             --                  0.20%
  Maturing Government Bond 2002
    Portfolio (1)(2)...................            0.05%                  0.15%             --                  0.20%
  Maturing Government Bond 2006
    Portfolio (2)......................            0.25%                  0.15%             --                  0.40%
  Maturing Government Bond 2010
    Portfolio (2)......................            0.25%                  0.15%             --                  0.40%
  Value Stock Portfolio................            0.75%                  0.08%             --                  0.83%
  Small Company Value Portfolio (3)....            0.75%                  0.15%             --                  0.90%
  International Bond Portfolio (3).....            0.60%                  1.00%             --                  1.60%
  Index 400 Mid-Cap Portfolio (3)......            0.40%                  0.15%             --                  0.55%
  Micro-Cap Value Portfolio (3)........            1.25%                  0.15%             --                  1.40%
  Macro-Cap Value Portfolio (3)........            0.70%                  0.15%             --                  0.85%
  Micro-Cap Growth Portfolio (3).......            1.10%                  0.15%             --                  1.25%
Templeton Variable Products Series:
  Templeton Developing Markets
    Portfolio Class 2 (3)(4)...........            1.25%                  0.53%            0.25%                2.03%
</TABLE>
 
(1) Investment management fees for  the Maturing Government  Bond 1998 and  2002
    Portfolios  are equal on an annual basis to .05% of average daily net assets
    until April 30, 1998 at  which time the fees will  be .25% of average  daily
    net assets.
(2) Minnesota  Mutual  voluntarily  absorbed certain  expenses  of  the Maturing
    Government Bond  1998, Maturing  Government Bond  2002, Maturing  Government
    Bond  2006 and Maturing  Government Bond 2010 Portfolios  for the year ended
    December 31, 1996. If  these portfolios had been  charged for expenses,  the
    ratio  of expenses to average daily net  assets would have been .72%, 1.14%,
    1.58% and 2.18%, respectively. It is Minnesota Mutual's present intention to
    waive other fund expenses during the current fiscal year which exceed, as  a
    percentage of average daily net assets, .15%. Minnesota Mutual also reserves
    the  option to reduce the level of  other expenses which it will voluntarily
    absorb.
(3) Although the Small  Company Value,  International Bond,  Index 400  Mid-Cap,
    Micro-Cap  Value, Macro-Cap Value, and  Micro-Cap Growth Portfolios will not
    be available until October 1, 1997, Minnesota Mutual has voluntarily  agreed
    to  absorb or  waive other  fund expenses which  exceed, as  a percentage of
    average daily net assets,  1.00% for International Bond  and .15% for  Small
    Company  Value,  Index 400  Mid-Cap,  Micro-Cap Value,  Macro-Cap  Value and
    Micro-Cap Growth Portfolios for the period  ended December 31, 1997. If  the
    Portfolios  were to be charged for these  expenses, it is estimated that the
    ratio of total expenses to average daily net assets
 
10
<PAGE>
    would be 3.04% for Small Company Value, 3.19% for International Bond,  2.20%
    for Index 400 Mid-Cap, 4.07% for Micro-Cap Value, 2.97% for Macro-Cap Value,
    3.77%  for  Micro-Cap Growth  and  3.75% for  Templeton  Developing Markets.
    Minnesota Mutual  also reserves  the option  to reduce  the level  of  other
    expenses which it will voluntarily absorb.
(4) Templeton  Developing Markets--Class 2. Figures are estimates for 1997 based
    on annualized Class 1 1996 figures. The Fund began operations in March 1996.
    Class 2  shares of  the Fund  were first  offered May  1, 1997,  and have  a
    distribution  plan or  "Rule 12b-1  Plan" which  is described  in the Fund's
    prospectus. In addition,  figures do  not reflect  the Investment  Manager's
    agreement  in advance to waive a portion  of its fees during 1996. After the
    waiver, actual management fees and total operating expenses of the portfolio
    were 1.17% and 1.95% of net assets, respectively. This waiver agreement  has
    been terminated.
 
CONTRACT OWNER EXPENSE EXAMPLE
SINGLE PAYMENT DEFERRED VARIABLE ANNUITY CONTRACT
 
You  would pay  the following  expenses on a  $1,000 investment  assuming (1) 5%
annual return and (2) redemption at the end of each time period.
<TABLE>
<CAPTION>
                                                               IF YOU SURRENDERED YOUR
                                                               CONTRACT AT THE END OF
                                                             THE APPLICABLE TIME PERIOD
                                                    ---------------------------------------------
                                                     1 YEAR      3 YEARS     5 YEARS    10 YEARS
                                                    ---------   ---------   ---------   ---------
<S>                                                 <C>         <C>         <C>         <C>
Growth Portfolio..................................  $     69    $     99    $    131    $    216
Bond Portfolio....................................  $     69    $     98    $    130    $    213
Money Market Portfolio............................  $     69    $    100    $    132    $    217
Asset Allocation Portfolio........................  $     68    $     98    $    129    $    211
Mortgage Securities Portfolio.....................  $     69    $     99    $    131    $    215
Index 500 Portfolio...............................  $     67    $     95    $    124    $    201
Capital Appreciation Portfolio....................  $     71    $    107    $    144    $    243
International Stock Portfolio.....................  $     73    $    113    $    154    $    265
Small Company Portfolio...........................  $     71    $    106    $    142    $    239
Maturing Government Bond 1998 Portfolio...........  $     65    $     88    $    114    $    188
Maturing Government Bond 2002 Portfolio...........  $     65    $     88    $    114    $    188
Maturing Government Bond 2006 Portfolio...........  $     67    $     94    $    122    $    195
Maturing Government Bond 2010 Portfolio...........  $     67    $     94    $    122    $    195
Value Stock Portfolio.............................  $     71    $    106    $    143    $    241
Small Company Value Portfolio.....................  $     72    $    108         n/a         n/a
International Bond Portfolio......................  $     78    $    129         n/a         n/a
Index 400 Mid-Cap Portfolio.......................  $     68    $     98         n/a         n/a
Micro-Cap Value Portfolio.........................  $     77    $    123         n/a         n/a
Macro-Cap Value Portfolio.........................  $     71    $    107         n/a         n/a
Micro-Cap Growth Portfolio........................  $     75    $    119         n/a         n/a
Templeton Developing Markets Portfolio Class 2....  $     83    $    141         n/a         n/a
 
<CAPTION>
                                                         IF YOU ANNUITIZE AT THE END OF THE
                                                          APPLICABLE TIME PERIOD OR YOU DO
                                                            NOT SURRENDER YOUR CONTRACT*
                                                    ---------------------------------------------
                                                     1 YEAR      3 YEARS     5 YEARS    10 YEARS
                                                    ---------   ---------   ---------   ---------
<S>                                                 <C>         <C>         <C>         <C>
Growth Portfolio..................................  $     19    $     58    $    100    $    216
Bond Portfolio....................................  $     18    $     57    $     98    $    213
Money Market Portfolio............................  $     19    $     58    $    100    $    217
Asset Allocation Portfolio........................  $     18    $     56    $     97    $    211
Mortgage Securities Portfolio.....................  $     19    $     58    $     99    $    215
Index 500 Portfolio...............................  $     17    $     54    $     92    $    201
Capital Appreciation Portfolio....................  $     21    $     66    $    113    $    243
International Stock Portfolio.....................  $     23    $     72    $    124    $    265
Small Company Portfolio...........................  $     21    $     65    $    111    $    239
Maturing Government Bond 1998 Portfolio...........  $     15    $     46    $     82    $    188
Maturing Government Bond 2002 Portfolio...........  $     15    $     46    $     82    $    188
Maturing Government Bond 2006 Portfolio...........  $     17    $     52    $     90    $    195
Maturing Government Bond 2010 Portfolio...........  $     17    $     52    $     90    $    195
Value Stock Portfolio.............................  $     21    $     65    $    112    $    241
Small Company Value Portfolio.....................  $     22    $     67         n/a         n/a
International Bond Portfolio......................  $     29    $     88         n/a         n/a
Index 400 Mid-Cap Portfolio.......................  $     18    $     57         n/a         n/a
Micro-Cap Value Portfolio.........................  $     27    $     82         n/a         n/a
Macro-Cap Value Portfolio.........................  $     21    $     66         n/a         n/a
Micro-Cap Growth Portfolio........................  $     25    $     78         n/a         n/a
Templeton Developing Markets Portfolio Class 2....  $     33    $    101         n/a         n/a
</TABLE>
 
*Annuitization for this purpose  means the election of  an Annuity Option  under
 which benefits are expected to continue for at least five years.
 
                                                                              11
<PAGE>
CONTRACT OWNER EXPENSE EXAMPLE
FLEXIBLE PAYMENT DEFERRED VARIABLE ANNUITY CONTRACT
 
You  would pay  the following  expenses on a  $1,000 investment  assuming (1) 5%
annual return and (2) redemption at the end of each time period.
<TABLE>
<CAPTION>
                                                               IF YOU SURRENDERED YOUR
                                                               CONTRACT AT THE END OF
                                                             THE APPLICABLE TIME PERIOD
                                                    ---------------------------------------------
                                                     1 YEAR      3 YEARS     5 YEARS    10 YEARS
                                                    ---------   ---------   ---------   ---------
<S>                                                 <C>         <C>         <C>         <C>
Growth Portfolio..................................  $     94    $    120    $    147    $    216
Bond Portfolio....................................  $     94    $    119    $    145    $    213
Money Market Portfolio............................  $     94    $    120    $    147    $    217
Asset Allocation Portfolio........................  $     93    $    119    $    144    $    211
Mortgage Securities Portfolio.....................  $     94    $    120    $    146    $    215
Index 500 Portfolio...............................  $     93    $    116    $    140    $    201
Capital Appreciation Portfolio....................  $     96    $    128    $    160    $    243
International Stock Portfolio.....................  $     98    $    134    $    170    $    265
Small Company Portfolio...........................  $     96    $    126    $    158    $    239
Maturing Government Bond 1998 Portfolio...........  $     90    $    109    $    130    $    188
Maturing Government Bond 2002 Portfolio...........  $     90    $    109    $    130    $    188
Maturing Government Bond 2006 Portfolio...........  $     92    $    115    $    137    $    195
Maturing Government Bond 2010 Portfolio...........  $     92    $    115    $    137    $    195
Value Stock Portfolio.............................  $     96    $    127    $    159    $    241
Small Company Value Portfolio.....................  $     97    $    129         n/a         n/a
International Bond Portfolio......................  $    103    $    149         n/a         n/a
Index 400 Mid-Cap Portfolio.......................  $     94    $    119         n/a         n/a
Micro-Cap Value Portfolio.........................  $    101    $    143         n/a         n/a
Macro-Cap Value Portfolio.........................  $     96    $    128         n/a         n/a
Micro-Cap Growth Portfolio........................  $    100    $    139         n/a         n/a
Templeton Developing Markets Portfolio Class 2....  $    107    $    161         n/a         n/a
 
<CAPTION>
                                                         IF YOU ANNUITIZE AT THE END OF THE
                                                          APPLICABLE TIME PERIOD OR YOU DO
                                                            NOT SURRENDER YOUR CONTRACT*
                                                    ---------------------------------------------
                                                     1 YEAR      3 YEARS     5 YEARS    10 YEARS
                                                    ---------   ---------   ---------   ---------
<S>                                                 <C>         <C>         <C>         <C>
Growth Portfolio..................................  $     19    $     58    $    100    $    216
Bond Portfolio....................................  $     18    $     57    $     98    $    213
Money Market Portfolio............................  $     19    $     58    $    100    $    217
Asset Allocation Portfolio........................  $     18    $     56    $     97    $    211
Mortgage Securities Portfolio.....................  $     19    $     58    $     99    $    215
Index 500 Portfolio...............................  $     17    $     54    $     92    $    201
Capital Appreciation Portfolio....................  $     21    $     66    $    113    $    243
International Stock Portfolio.....................  $     23    $     72    $    124    $    265
Small Company Portfolio...........................  $     21    $     65    $    111    $    239
Maturing Government Bond 1998 Portfolio...........  $     15    $     46    $     82    $    188
Maturing Government Bond 2002 Portfolio...........  $     15    $     46    $     82    $    188
Maturing Government Bond 2006 Portfolio...........  $     17    $     52    $     90    $    195
Maturing Government Bond 2010 Portfolio...........  $     17    $     52    $     90    $    195
Value Stock Portfolio.............................  $     21    $     65    $    112    $    241
Small Company Value Portfolio.....................  $     22    $     67         n/a         n/a
International Bond Portfolio......................  $     29    $     88         n/a         n/a
Index 400 Mid-Cap Portfolio.......................  $     18    $     57         n/a         n/a
Micro-Cap Value Portfolio.........................  $     27    $     82         n/a         n/a
Macro-Cap Value Portfolio.........................  $     21    $     66         n/a         n/a
Micro-Cap Growth Portfolio........................  $     25    $     78         n/a         n/a
Templeton Developing Markets Portfolio Class 2....  $     33    $    101         n/a         n/a
</TABLE>
 
*Annuitization for this purpose  means the election of  an Annuity Option  under
 which benefits are expected to continue for at least five years.
 
12
<PAGE>
CONDENSED FINANCIAL INFORMATION
 
The financial statements of Minnesota Mutual Variable Annuity Account and of The
Minnesota  Mutual  Life  Insurance Company  may  be  found in  the  Statement of
Additional Information.
  The table below gives per unit information about the financial history of each
sub-account from the inception  of each to December  31, 1996. This  information
should be read in conjunction with the financial statements and related notes of
Minnesota Mutual Variable Annuity Account included in this prospectus.
<TABLE>
<CAPTION>
                                                                     YEAR ENDED DECEMBER 31,
                                   1996         1995         1994         1993        1992        1991        1990        1989
                                -----------  -----------  -----------  ----------  ----------  ----------  ----------  ----------
<S>                             <C>          <C>          <C>          <C>         <C>         <C>         <C>         <C>
Growth Sub-Account:
  Unit value at beginning of
    period....................       $2.630       $2.143       $2.152      $2.084      $2.012      $1.520      $1.535      $1.234
  Unit value at end of
    period....................       $3.043       $2.630       $2.143      $2.152      $2.084      $2.012      $1.520      $1.535
  Number of units outstanding
    at end of period..........   38,448,452   35,809,340   33,090,790  25,980,318  18,152,996  10,204,896   6,759,950   4,899,370
Bond Sub-Account:
  Unit value at beginning of
    period....................       $2.153       $1.820       $1.931      $1.773      $1.683      $1.450      $1.370      $1.232
  Unit value at end of
    period....................       $2.189       $2.153       $1.820      $1.931      $1.773      $1.683      $1.450      $1.370
  Number of units outstanding
    at end of period..........   36,732,062   28,069,241   23,798,963  18,794,458  11,267,890   6,184,694   5,250,072   3,880,390
Money Market Sub-Account:
  Unit value at beginning of
    period....................       $1.515       $1.455       $1.421      $1.402      $1.375      $1.321      $1.241      $1.157
  Unit value at end of
    period....................       $1.570       $1.515       $1.455      $1.421      $1.402      $1.375      $1.321      $1.241
  Number of units outstanding
    at end of period..........   22,929,634   14,809,515   11,720,778   9,783,391   7,414,734   6,618,010   6,183,393   4,053,104
Asset Allocation Sub-Account:
  Unit value at beginning of
    period....................       $2.486       $2.014       $2.068      $1.967      $1.858      $1.460      $1.426      $1.202
  Unit value at end of
    period....................       $2.762       $2.486       $2.014      $2.068      $1.967      $1.858      $1.460      $1.426
  Number of units outstanding
    at end of period..........  116,211,650  110,975,477  109,044,286  99,680,197  66,121,882  33,820,537  22,938,615  16,134,930
Mortgage Securities Sub-
  Account:
  Unit value at beginning of
    period....................       $1.934       $1.660       $1.739      $1.612      $1.535      $1.337      $1.237      $1.104
  Unit value at end of
    period....................       $2.010       $1.934       $1.660      $1.739      $1.612      $1.535      $1.337      $1.237
  Number of units outstanding
    at end of period..........   32,527,955   31,277,934   31,542,405  33,032,291  20,284,849   9,817,276   8,632,895   6,903,370
Index 500 Sub-Account
  Unit value at beginning of
    period....................       $2.425       $1.794       $1.796      $1.657      $1.563      $1.220      $1.285      $0.998
  Unit value at end of
    period....................       $2.913       $2.425       $1.794      $1.796      $1.657      $1.563      $1.220      $1.285
  Number of units outstanding
    at end of period..........   46,097,553   35,272,024   29,639,298  23,455,059  16,294,129  11,254,609  13,788,252  10,567,879
Capital Appreciation Sub-
  Account:
  Unit value at beginning of
    period....................       $2.524       $2.082       $2.062      $1.891      $1.823      $1.303      $1.344      $0.984
  Unit value at end of
    period....................       $2.932       $2.524       $2.082      $2.062      $1.891      $1.823      $1.303      $1.344
  Number of units outstanding
    at end of period..........   51,023,999   45,964,468   40,739,415  30,907,396  21,822,440  10,874,168   6,767,806   3,831,974
International Stock Sub-
  Account:
  Unit value at beginning of
    period....................       $1.462       $1.296       $1.317      $0.925      $1.000(b)
  Unit value at end of
    period....................       $1.730       $1.462       $1.296      $1.317      $0.925
  Number of units outstanding
    at end of period..........   86,521,264   68,725,183   61,474,893  38,637,487  16,751,564
Small Company Sub-Account:
  Unit value at beginning of
    period....................       $1.591       $1.220       $1.164      $1.000(c)
  Unit value at end of
    period....................       $1.673       $1.591       $1.220      $1.164
  Number of units outstanding
    at end of period..........   59,295,273   43,234,716   29,723,609   9,554,322
 
<CAPTION>
                                      YEAR ENDED DECEMBER 31,
                                   1988        1987        1986
                                ----------  ----------  -----------
<S>                             <C>         <C>         <C>
Growth Sub-Account:
  Unit value at beginning of
    period....................      $1.081      $1.051       $1.074
  Unit value at end of
    period....................      $1.234      $1.081       $1.051
  Number of units outstanding
    at end of period..........   3,160,624   2,786,799    1,359,015
Bond Sub-Account:
  Unit value at beginning of
    period....................      $1.166      $1.162       $1.063
  Unit value at end of
    period....................      $1.232      $1.166       $1.162
  Number of units outstanding
    at end of period..........   2,588,056   2,045,581    1,827,496
Money Market Sub-Account:
  Unit value at beginning of
    period....................      $1.099      $1.055       $1.013
  Unit value at end of
    period....................      $1.157      $1.099       $1.055
  Number of units outstanding
    at end of period..........   1,728,357   1,320,469      726,577
Asset Allocation Sub-Account:
  Unit value at beginning of
    period....................      $1.103      $1.088       $1.065
  Unit value at end of
    period....................      $1.202      $1.103       $1.088
  Number of units outstanding
    at end of period..........  12,633,285  11,334,709    5,796,509
Mortgage Securities Sub-
  Account:
  Unit value at beginning of
    period....................      $1.030      $1.000(a)
  Unit value at end of
    period....................      $1.104      $1.030
  Number of units outstanding
    at end of period..........   5,611,257   5,103,386
Index 500 Sub-Account
  Unit value at beginning of
    period....................      $0.870      $1.000(a)
  Unit value at end of
    period....................      $0.998      $0.870
  Number of units outstanding
    at end of period..........   6,238,579   5,527,842
Capital Appreciation Sub-
  Account:
  Unit value at beginning of
    period....................      $0.926      $1.000(a)
  Unit value at end of
    period....................      $0.984      $0.926
  Number of units outstanding
    at end of period..........   2,038,085   1,363,363
International Stock Sub-
  Account:
  Unit value at beginning of
    period....................
  Unit value at end of
    period....................
  Number of units outstanding
    at end of period..........
Small Company Sub-Account:
  Unit value at beginning of
    period....................
  Unit value at end of
    period....................
  Number of units outstanding
    at end of period..........
</TABLE>
 
                                                                              13
<PAGE>
 
<TABLE>
<CAPTION>
                                   1996         1995         1994
                                -----------  -----------  -----------
<S>                             <C>          <C>          <C>
Maturing Government Bond 1998
 Sub-Account:
  Unit value at beginning of
    period....................       $1.124       $0.981       $1.000(d)
  Unit value at end of
    period....................       $1.156       $1.124       $0.981
  Number of units outstanding
    at end of period..........    3,911,112    3,330,772    2,578,506
Maturing Government Bond 2002
 Sub-Account:
  Unit value at beginning of
    period....................       $1.200       $0.972       $1.000(d)
  Unit value at end of
    period....................       $1.205       $1.200       $0.972
  Number of units outstanding
    at end of period..........    2,935,860    2,417,823    2,528,509
Maturing Government Bond 2006
 Sub-Account:
  Unit value at beginning of
    period....................       $1.281       $0.963       $1.000(d)
  Unit value at end of
    period....................       $1.250       $1.281       $0.963
  Number of units outstanding
    at end of period..........    2,334,109    1,878,731    1,808,705
Maturing Government Bond 2010
 Sub-Account:
  Unit value at beginning of
    period....................       $1.326       $0.951       $1.000(d)
  Unit value at end of
    period....................       $1.265       $1.326       $0.951
  Number of units outstanding
    at end of period..........    2,077,124      924,681      913,358
Value Stock Sub-Account:
  Unit value at beginning of
    period....................       $1.375       $1.047       $1.000(d)
  Unit value at end of
    period....................       $1.778       $1.375       $1.047
  Number of units outstanding
    at end of period..........   43,796,523   18,744,902    7,178,675
</TABLE>
 
(a) The  information for the sub-account is shown for the period June 1, 1987 to
    December 31, 1987.  June 1,  1987 was  the effective  date of  the 1933  Act
    Registration for the sub-account.
 
(b) The  information for the sub-account is shown  for the period May 1, 1992 to
    December 31,  1992. May  1, 1992  was the  effective date  of the  1933  Act
    Registration for the sub-account.
 
(c) The  information for the sub-account is shown  for the period May 3, 1993 to
    December 31,  1993. May  3, 1993  was the  effective date  of the  1933  Act
    Registration for the sub-account.
 
(c) The  information for the sub-account is shown  for the period May 2, 1994 to
    December 31,  1994. May  2, 1994  was the  effective date  of the  1933  Act
    Registration for the sub-account.
 
14
<PAGE>
PERFORMANCE DATA
 
From  time  to  time the  Variable  Annuity Account  may  publish advertisements
containing performance data  relating to its  sub-accounts. In the  case of  the
Money  Market Sub-Account,  the Variable Annuity  Account will  publish yield or
effective yield quotations  for a seven-day  or other specified  period. In  the
case  of the other sub-accounts, performance data will consist of average annual
total return quotations for a one-year period and for the period since the  sub-
account became available pursuant to the Variable Annuity Account's registration
statement,  and  may also  include cumulative  total  return quotations  for the
period since  the sub-account  became available  pursuant to  such  registration
statement.  The Money Market sub-account may  also quote such average annual and
cumulative total  return  figures.  Performance figures  used  by  the  Variable
Annuity  Account are  based on  historical information  of the  sub-accounts for
specified periods,  and  the figures  are  not  intended to  suggest  that  such
performance  will continue  in the future.  Performance figures  of the Variable
Annuity Account will reflect  only charges made against  the net asset value  of
the  Variable Annuity Account pursuant to the  terms of the contracts offered by
this Prospectus.  The  various  performance figures  used  in  Variable  Annuity
Account  advertisements relating to  the contracts described  in this Prospectus
are summarized below. More detailed information on the computations is set forth
in the Statement of Additional Information.
 
MONEY MARKET  SUB-ACCOUNT  YIELD.      Yield  quotations  for the  Money  Market
Sub-Account  are  based  on  the  income  generated  by  an  investment  in  the
sub-account over  a  specified  period,  usually seven  days.  The  figures  are
"annualized,"  that is, the amount of  income generated by the investment during
the period is assumed to  be generated over a 52-week  period and is shown as  a
percentage   of  the  investment.  Effective  yield  quotations  are  calculated
similarly, but when annualized  the income earned by  an investment in the  sub-
account is assumed to be reinvested. Effective yield quotations will be slightly
higher  than yield quotations because of  the compounding effect of this assumed
reinvestment. Yield and effective yield  figures quoted by the Sub-Account  will
not reflect the deduction of any applicable deferred sales charges.
 
TOTAL  RETURN FIGURES.    Cumulative total return figures may also be quoted for
all Sub-Accounts.  Cumulative total  return is  based on  a hypothetical  $1,000
investment  in the Sub-Account at the beginning of the advertised period, and is
equal to  the percentage  change between  the  $1,000 net  asset value  of  that
investment  at  the beginning  of the  period and  the net  asset value  of that
investment at the end of the  period. Cumulative total return figures quoted  by
the  Sub-Account will not reflect the deduction of any applicable deferred sales
charges.
  Prior to  May 3,  1993, several  of the  Advantus Sub-Accounts  were known  by
different  names. The  Growth Sub-Account was  the Stock  Sub-Account, the Asset
Allocation Sub-Account was  the Managed Sub-Account,  the Index 500  Sub-Account
was  the  Index Sub-Account  and the  Capital  Appreciation Sub-Account  was the
Aggressive Growth Sub-Account.
  All cumulative  total  return  figures  published  for  Sub-Accounts  will  be
accompanied  by  average  annual total  return  figures for  a  one-year period,
five-year period  and for  the  period since  the Sub-Account  became  available
pursuant  to  the  Variable Annuity  Account's  registration  statement. Average
annual total  return figures  will show  for the  specified period  the  average
annual  rate of return required for an initial investment of $1,000 to equal the
surrender value of that investment at the end of the period. The surrender value
will reflect  the deduction  of  the deferred  sales  charge applicable  to  the
contract  and to the length of the  period advertised. Such average annual total
return figures may also be accompanied  by average annual total return  figures,
for  the  same or  other  periods, which  do not  reflect  the deduction  of any
applicable deferred sales charges.
 
PREDICTABILITY OF  RETURN.        For  each  of  the  Maturing  Government  Bond
Sub-Accounts,  Minnesota Mutual will calculate  an anticipated growth rate (AGR)
on each  day that  the underlying  Portfolio of  the Fund  is valued.  Minnesota
Mutual  may also calculate  an anticipated value  at maturity (AVM)  on any such
day. Daily  calculations for  each are  necessary because  (i) the  AGR and  AVM
calculations  assume,  among  other  things,  an  expense  ratio  and  portfolio
composition that remains unchanged for the life of each such Sub-Account to  the
target  date at maturity, and (ii) such calculations are therefore meaningful as
a measure of predictable  return with respect to  particular units only if  such
units  are held to the applicable target  maturity date and only with respect to
units purchased on the date of such calculations (the AGR and AVM applicable  to
 
                                                                              15
<PAGE>
units   purchased  on  any  other  date  may  be  materially  different).  Those
assumptions can only  be hypothetical given  that owners of  contracts have  the
option  to  purchase  or  redeem  units on  any  business  day  through contract
activity, and will receive dividend  and capital gain distributions through  the
receipt  of  additional shares  to their  unit  values. A  number of  factors in
addition to contract owner  activity can cause a  Maturing Government Bond  Sub-
Account's  AGR and AVM  to change from  day to day.  These include the adviser's
efforts to improve total return through market opportunities, transaction costs,
interest rate  changes and  other events  that affect  the market  value of  the
investments held in each Maturing Government Bond Portfolio in the Fund. Despite
these factors, it is anticipated that if specific units of a Maturing Government
Bond  Sub-Account are held to the applicable  target maturity date, then the AGR
and AVM applicable to such units (i.e., calculated as of the date of purchase of
such units) will vary from the actual return experienced by such units within  a
narrow range.
 
- - ------------------------------------------------------------------------
GENERAL DESCRIPTIONS
 
A.  THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY
We  are a  mutual life  insurance company  organized in  1880 under  the laws of
Minnesota. Our home office  is at 400 Robert  Street North, St. Paul,  Minnesota
55101-2098,  telephone: (612) 665-3500.  We are licensed to  do a life insurance
business in all states  of the United  States (except New York  where we are  an
authorized reinsurer), the District of Columbia, Canada, Puerto Rico, and Guam.
 
B.  VARIABLE ANNUITY ACCOUNT
A  separate account  called the  Minnesota Mutual  Variable Annuity  Account was
established on September 10, 1984, by  our Board of Trustees in accordance  with
certain  provisions  of the  Minnesota insurance  law.  The separate  account is
registered as  a  "unit  investment  trust" with  the  Securities  and  Exchange
Commission  under the Investment Company Act of 1940, but such registration does
not  signify  that  the  Securities  and  Exchange  Commission  supervises   the
management,  or the  investment practices or  policies, of  the Variable Annuity
Account. The separate account meets the definition of a "separate account" under
the federal securities laws.
  The Minnesota law  under which  the Variable Annuity  Account was  established
provides that the assets of the Variable Annuity Account shall not be chargeable
with  liabilities arising out  of any other  business which we  may conduct, but
shall be held and  applied exclusively to  the benefit of  the holders of  those
variable  annuity contracts for which the  separate account was established. The
investment performance of the Variable  Annuity Account is entirely  independent
of  both the  investment performance  of our  General Account  and of  any other
separate account  which we  may have  established or  may later  establish.  All
obligations  under the contracts are  general corporate obligations of Minnesota
Mutual.
  The Variable Annuity  Account currently has  twenty-one sub-accounts to  which
contract  owners  may allocate  purchase payments.  Each sub-account  invests in
shares of a corresponding Portfolio of the Funds. Additional sub-accounts may be
added at our discretion.
 
C.  ADVANTUS SERIES FUND, INC.
The Variable Annuity  Account currently  invests in Advantus  Series Fund,  Inc.
(the  "Series  Fund"), a  mutual fund  of the  series type  which is  advised by
Advantus Capital Management, Inc. Prior to May  1, 1997, the name of the  Series
Fund was "MIMLIC Series Fund, Inc." On January 14, 1997, the Series Fund's Board
of   Directors  approved  an   amendment  of  the   Series  Fund's  Articles  of
Incorporation for  the  purpose of  changing  the name  of  the Series  Fund  to
"Advantus  Series Fund,  Inc." effective  May 1, 1997.  The purpose  of the name
change is to  provide the Series  Fund with  a more distinctive  name which  may
provide  greater visibility and name recognition, which reflects the name of its
adviser, and which may provide  additional marketing opportunities for  variable
contracts  investing in  shares of  the Series  Fund. The  change in  the Series
Fund's name will not result in any change in investment objectives, policies  or
practices  for the  Series Fund  or any  of its  portfolios. The  Series Fund is
registered with  the  Securities  and  Exchange  Commission  as  a  diversified,
open-end  management investment company, but  such registration does not signify
that the Commission supervises  the management, or  the investment practices  or
policies, of the Series Fund. The Series Fund issues its shares, continually and
without  sales charge,  only to  us and  our separate  accounts, which currently
include the Variable Annuity
 
16
<PAGE>
Account, Variable Fund D, the Variable Life Account, the Group Variable  Annuity
Account  and the Variable  Universal Life Account.  The Series Fund  may also be
used as the underlying investment medium for separate accounts of the  Northstar
Life  Insurance Company, a  wholly-owned life insurance  subsidiary of Minnesota
Mutual which is domiciled in New York. Shares are sold and redeemed at net asset
value. In  the case  of a  newly issued  contract, purchases  of shares  of  the
Portfolios of the Series Fund in connection with the first purchase payment will
be  based on the  values next determined  after issuance of  the contract by us.
Redemptions of shares of the Portfolios of  the Series Fund are made at the  net
asset value next determined following the day we receive a request for transfer,
partial  withdrawal or surrender at our home  office. In the case of outstanding
contracts, purchases  of shares  of the  Portfolio of  the Series  Fund for  the
Variable  Annuity Account are  made at the  net asset value  of such shares next
determined after receipt by us of contract purchase payments.
  The Series  Fund's investment  adviser is  Advantus Capital  Management,  Inc.
("Advantus  Capital"). Advantus Capital  is a wholly-owned  subsidiary of MIMLIC
Asset Management  Company ("MIMLIC  Management")  which prior  to May  1,  1997,
served  as  investment  adviser  to  the Series  Fund.  MIMLIC  Management  is a
wholly-owned subsidiary of  Minnesota Mutual.  The same  portfolio managers  and
other  personnel  who previously  provided investment  advisory services  to the
Series Fund  through MIMLIC  Management continue  to provide  the same  services
through  Advantus Capital. It acts as an investment adviser to the Fund pursuant
to an advisory agreement.
  Advantus Capital acts as investment adviser  for the Fund and its  Portfolios.
Winslow Capital Management, Inc., a Minnesota corporation with principal offices
at  4720 IDS  Tower, 80 South  Eighth Street, Minneapolis,  Minnesota 55402, has
been retained under an investment  sub-advisory agreement with Advantus  Capital
Management,  Inc.  to provide  investment advice  and,  in general,  conduct the
management  and  investment  program  of  the  Capital  Appreciation  Portfolio.
Similarly,  Templeton  Investment  Counsel,  Inc.,  a  Florida  corporation with
principal offices  in  Fort Lauderdale,  Florida,  has been  retained  under  an
investment   sub-advisory  agreement   to  provide  investment   advice  to  the
International Stock Portfolio  of the  Fund. J.P.  Morgan Investment  Management
Inc.,  a Delaware corporation with principal offices  in New York, New York, has
been retained under an investment  sub-advisory agreement to provide  investment
advice  for  the  Macro-Cap Value  Portfolio  of the  Fund.  Keystone Investment
Management Company, a  Delaware corporation  with principal  offices in  Boston,
Massachusetts,  has been retained under  an investment sub-advisory agreement to
provide investment advice for  the Micro-Cap Value Portfolio  of the Fund.  Wall
Street  Associates, a California corporation with principal offices in La Jolla,
California, as  been  retained under  an  investment sub-advisory  agreement  to
provide investment advice for the Micro-Cap Growth Portfolio of the Fund. Julius
Baer  Investment Management, Inc., a Delaware corporation with principal offices
in New  York, New  York,  has been  retained  under an  investment  sub-advisory
agreement  to provide investment advice for  the International Bond Portfolio of
the Fund.
  A prospectus for  the Fund  is attached to  this Prospectus.  A person  should
carefully read the Fund's prospectus before investing in the contracts.
 
D.  TEMPLETON VARIABLE PRODUCTS SERIES FUND
In addition to the investments in the Fund, the Variable Annuity Account invests
in  the  Templeton  Developing  Markets Fund,  a  diversified  portfolio  of the
Templeton Variable Products Series Fund, a mutual fund of the series type.
  The investment objectives  and certain  policies of  the Templeton  Developing
Markets Fund available under the Contract are as follows:
 
    The  Templeton Developing Markets Fund seeks long-term capital appreciation.
    It pursues this  objective by  investing primarily in  equity securities  of
    issuers   in  countries  having   developing  markets.  Countries  generally
    considered to have developing markets are all countries that are  considered
    to  be  developing  or  emerging countries  by  the  International  Bank for
    Reconstruction and Development (more commonly referred to as the World Bank)
    or the  International Finance  Corporation, as  well as  countries that  are
    classified  by the United Nations or otherwise regarded by their authorities
    as developing.
  Class 2 of  the Templeton Developing  Markets Fund pays  0.25% of the  average
daily net assets
 
                                                                              17
<PAGE>
annually  under a distribution  plan adopted under Rule  12b-1 of the Investment
Company Act of 1940. Amounts paid under  the 12b-1 plan to Minnesota Mutual  may
be used for certain contract owner services or distribution activities.
  The investment adviser of Templeton Developing Markets Fund is Templeton Asset
Management  Ltd.,  a  Singapore  corporation.  It  is  an  indirect wholly-owned
subsidiary of Franklin Resources,  Inc. ("Franklin"). Through its  subsidiaries,
Franklin   is  engaged  in  the   financial  services  industry.  The  Templeton
organization has been investing  globally since 1940  and, with its  affiliates,
provides investment management and advisory services to a worldwide client base.
The investment adviser and its affiliates have offices worldwide.
 
E.  ADDITIONS, DELETIONS OR SUBSTITUTIONS
We  retain the right, subject to any  applicable law, to make substitutions with
respect to the investments of the sub-accounts of the Variable Annuity  Account.
If  investment in  a fund  should no longer  be possible  or if  we determine it
becomes inappropriate for  contracts of  this class, we  may substitute  another
fund   for  a  sub-account.  Substitution  may   be  with  respect  to  existing
accumulation values, future purchase payments and future annuity payments.
  We may also establish additional sub-accounts in the Variable Annuity  Account
and  we reserve  the right  to add,  combine or  remove any  sub-accounts of the
Variable Annuity Account. Each additional sub-account will purchase shares in  a
new  portfolio or mutual fund. Such sub-accounts may be established when, in our
sole discretion, marketing,  tax, investment  or other  conditions warrant  such
action.   Similar  considerations  will  be  used   by  us  should  there  be  a
determination to  eliminate one  or more  of the  sub-accounts of  the  Variable
Annuity Account. The addition of any investment option will be made available to
existing contract owners on such basis as may be determined by us.
  We  also reserve the right, when permitted by law, to de-register the Variable
Annuity Account  under  the Investment  Company  Act  of 1940,  to  restrict  or
eliminate  any voting rights of the contract owners, and to combine the Variable
Annuity Contract with one or more of our other separate accounts.
  Shares of  the  Portfolios  of the  Funds  are  also sold  to  other  separate
accounts, which are used to receive and invest premiums paid under variable life
policies.  It is conceivable  that in the  future it may  be disadvantageous for
variable life insurance separate accounts and variable annuity separate accounts
to invest in the Fund simultaneously. Although neither Minnesota Mutual nor  the
Funds  currently  foresees  any  such  disadvantages  either  to  variable  life
insurance policy owners or to variable annuity contract owners, the Fund's Board
of Directors  intends  to monitor  events  in  order to  identify  any  material
conflicts  between such policy owners and  contract owners and to determine what
action, if any, should be taken  in response thereto. Such action could  include
the  sale of Fund  shares by one or  more of the  separate accounts, which could
have adverse consequences.  Material conflicts could  result from, for  example,
(1) changes in state insurance laws, (2) changes in Federal income tax laws, (3)
changes  in the investment management  of any of the  Portfolios of the Fund, or
(4) differences in voting instructions between those given by policy owners  and
those given by contract owners.
 
- - ------------------------------------------------------------------------
CONTRACT CHARGES
 
A.  SALES CHARGES
No  sales charge  is deducted  from the  purchase payments  for these contracts.
However, when  a  contract's accumulation  value  is reduced  by  a  withdrawal,
surrender  or applied  to provide  an annuity,  a deferred  sales charge  may be
deducted for expenses relating to the sale of the contracts.
  No deferred sales charge is deducted from the accumulation value withdrawn if:
(a) the withdrawal occurs after  a contract has been in  force for at least  ten
contract  years, (b) withdrawals during the first  calendar year are equal to or
less than 10% of the purchase payments and, if in subsequent calendar years they
are equal to  or less  than 10%  of the  accumulation value  at the  end of  the
previous  calendar year,  (c) the  withdrawal is  on account  of the annuitant's
death, or (d) the  withdrawal is for the  purpose of providing annuity  payments
under an option where payments are expected to continue for at least five years.
If  withdrawals in  a calendar  year exceed  10% of  those purchase  payments or
accumulation value,  the  sales charge  applies  to  the amount  of  the  excess
withdrawal.  In addition, we  will waive the  sales charge on  that portion of a
contract's accumulation value which is applied to the
 
18
<PAGE>
purchase of an Adjustable Income Annuity, which is an immediate variable annuity
contract, issued by us.
  The sales charge  is deducted  from the  remaining accumulation  value of  the
contract  except  in  the case  of  a  surrender, where  it  reduces  the amount
distributed. We will deduct the sales  charge proportionally from the fixed  and
variable accumulation value of the contract.
  The  amount of  the deferred  sales charge, expressed  as a  percentage of the
accumulation value withdrawn, is shown  in the following table. Percentages  are
shown  as of the  contract date and  the end of  each of the  first ten contract
years. The percentages  decrease uniformly each  month for 120  months from  the
contract  date. In no event will the sum of the deferred sales charges exceed 9%
of the purchase payments made under a contract.
 
<TABLE>
<CAPTION>
                               DEFERRED SALES CHARGE
                          -------------------------------
                           FLEXIBLE
                            PAYMENT        SINGLE PAYMENT
                           VARIABLE           VARIABLE
    BEGINNING OF            ANNUITY           ANNUITY
   CONTRACT YEAR           CONTRACT           CONTRACT
- - --------------------      -----------      --------------
<S>                       <C>              <C>
         1                   9.0%                6.0%
         2                   8.1                 5.4
         3                   7.2                 4.8
         4                   6.3                 4.2
         5                   5.4                 3.6
         6                   4.5                 3.0
         7                   3.6                 2.4
         8                   2.7                 1.8
         9                   1.8                 1.2
        10                   0.9                 0.6
        11                   -0-                 -0-
</TABLE>
 
Deduction for any applicable state premium taxes may be made from each  purchase
payment or at the commencement of annuity payments. (Currently, such taxes range
from  0.5% to 3.5%, depending on the  applicable law.) Any amount withdrawn from
the contract may be  reduced by any premium  taxes not previously deducted  from
purchase payments.
  As  a  percentage of  purchase payments  paid to  the contracts,  MIMLIC Sales
Corporation ("MIMLIC Sales"), the principal underwriter,  may pay up to 4.5%  of
the  amount of  those purchase  payments to  broker-dealers responsible  for the
sales of the contracts. In addition, MIMLIC Sales or Minnesota Mutual will  pay,
based   uniformly  on   the  sale   of  variable   annuity  contracts   by  such
broker-dealers,  credits  which   allow  registered   representatives  who   are
responsible  for sales of  variable annuity contracts  to attend conventions and
other meetings sponsored by Minnesota Mutual  or its affiliates for the  purpose
of  promoting the  sale of the  insurance and/or investment  products offered by
Minnesota Mutual  and its  affiliates.  Such credits  may cover  the  registered
representatives'  transportation, hotel accommodations, meals, registration fees
and the like.  Minnesota Mutual  may also pay  those registered  representatives
amounts  based upon their  production and the persistency  of life insurance and
annuity business placed with Minnesota Mutual.
 
B.  MORTALITY AND EXPENSE RISK CHARGES
We assume the mortality risk under  the contracts by our obligation to  continue
to make monthly annuity payments, determined in accordance with the annuity rate
tables  and  other  provisions contained  in  the contracts,  to  each annuitant
regardless of how long that annuitant lives  or all annuitants as a group  live.
This  assures an  annuitant that  neither the  annuitant's own  longevity nor an
improvement in life  expectancy generally  will have  an adverse  effect on  the
monthly annuity payments received under the contract.
  We assume an expense risk by assuming the risk that deductions provided for in
the  contracts for  the sales  and administrative  expenses will  be adequate to
cover the expenses incurred.
  For assuming these  risks, we  currently make  a deduction  from the  Variable
Annuity  Account at the annual rate of .80%  for the mortality risk and .45% for
the expense risk. We reserve the right to increase the charge for the assumption
of expense risks  to not more  than .60%. If  this charge is  increased to  this
maximum  amount, then the  total of the  mortality risk and  expense risk charge
would be 1.40% on an annual basis.
  For a discussion of how  these charges are applied  in the calculation of  the
accumulation  unit value, please see the discussion entitled "Purchase Payments,
Value of the Contract and Transfers" on page 26.
  If these deductions prove to be insufficient  to cover the actual cost of  the
expense  and mortality risks  assumed by us,  then we will  absorb the resulting
losses and make sufficient  transfers to the Variable  Annuity Account from  our
general  account, where appropriate. Conversely, if these deductions prove to be
more than sufficient after the establishment of any contingency reserves  deemed
prudent or required by law, any excess will be profit (or "surplus") to us. Some
or  all of such profit may be used to cover any distribution costs not recovered
through the deferred sales charge.
 
                                                                              19
<PAGE>
EXCHANGE OFFER
 
Persons owning  or having  an interest  in  certain of  our fixed  and  variable
annuities  may exchange those  interests for the  contracts described herein and
transfer current accumulation values into the contracts.
  The persons  eligible for  the exchange  include: owners  of individual  fixed
annuities  issued by Minnesota  Mutual and The  Ministers Life Insurance Company
except for those contracts  known as SPDA 3  and SecureOption III;  participants
under  Minnesota Mutual  group annuities  offering fixed  benefits in situations
other than  where the  contract is  issued  in connection  with a  stock  bonus,
pension  or profit sharing  plan which meets  the requirements for qualification
under section 401 of  the Internal Revenue Code  and variable annuity  contracts
issued  by Minnesota  Mutual Variable  Fund D  with a  contingent deferred sales
charge.
  Persons who own combination  fixed and variable  annuity contracts, where  any
general  account  assets are  beyond  the period  where  a withdrawal  charge is
applicable, may  also  be  eligible  for  such  contract  exchanges.  For  these
contracts,  allocations as between  fixed and variable  accumulations may not be
altered at the time of the  exchange. In addition, for contracts with  interests
in Minnesota Mutual Variable Fund D, other than those with a contingent deferred
sales  load,  the contract  or  participation must  be  of at  least  ten year's
duration. No charge is  made to this transfer.  For contracts described in  this
Prospectus,  where the  contract type  is to  be exchanged,  for example  from a
single payment contract to  a flexible payment contract,  we will allow such  an
exchange  only during the  original contract's first contract  year and if there
have been  no transfers  or withdrawals.  In some  circumstances where  multiple
contracts  are  being exchanged  for the  convenience  of the  contractholder, a
charge of $50 to cover administrative expense may be imposed.
  For exchanges  from annuities  where  a sales  charge  is deducted  from  each
purchase  payment received  from the  owner, accumulation  values credited  to a
contract at the time of transfer will not be subject to a deferred sales  charge
at any time. However, purchase payments subsequently made to the contract may be
subject  to  a  deferred  sales  charge  if  such  amounts  are  then withdrawn,
surrendered or applied to provide an annuity. The deferred sales charge will  be
applied  so that the contract year of the  contract will be determined as of the
contract date of the annuity from which the accumulation value was transferred.
  For exchanges from  annuities where  a deferred sales  charge may  be made  on
withdrawals,  surrenders or when  amounts are applied to  provide an annuity, no
deferred sales charge will be made at the time of transfer. However, a  deferred
sales charge may be deducted from the accumulation value of the contract on such
a  basis so that the contract year of  the contract will be determined as of the
contract date of the annuity from  which the accumulation value was  transferred
or,  if transfer is of  participation in a group annuity,  from the first day of
the month in which contributions were  first received from the individual  under
the group annuity contract on behalf of that individual.
  In  considering an exchange, you should  review the provisions of the contract
you now own and  the contracts described  in the Prospectus.  To effect such  an
exchange,   your  completed  application,  Annuity  Exchange  Authorization  and
existing annuity contracts should be returned to us.
  Inquiries regarding the contracts mentioned  above or the contracts  described
in  this Prospectus may be directed to  us at: Minnesota Mutual Life Center, 400
Robert Street North, St. Paul, Minnesota  55101-2098; or by calling us at  (612)
665-3500.
 
- - ------------------------------------------------------------------------
VOTING RIGHTS
 
The  Fund shares held in the Variable Annuity Account will be voted by us at the
regular and special meetings of the Funds. Shares attributable to contracts will
be voted by  us in accordance  with instructions received  from contract  owners
with  voting interests in  each sub-account of the  Variable Annuity Account. In
the event no  instructions are received  from a contract  owner with respect  to
shares  of a Portfolio  held by a sub-account,  we will vote  such shares of the
Portfolio and shares  not attributable to  contracts in the  same proportion  as
shares  of the  Portfolio held by  such sub-account for  which instructions have
been received. The number of votes which are available to a contract owner  will
be  calculated separately for each sub-account  of the Variable Annuity Account.
If, however, the Investment Company Act of 1940 or any regulation under that Act
should change so that we may be
 
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allowed to vote shares in our own right, then we may elect to do so.
  During the accumulation period of each contract, the contract owner holds  the
voting  interest in  each contract.  The number of  votes will  be determined by
dividing the accumulation value of the contract attributable to each sub-account
by the net asset value per share of the underlying Fund shares held by that sub-
account.
  During the annuity  period of each  contract, the annuitant  holds the  voting
interest  in each contract. The  number of votes will  be determined by dividing
the reserve for  each contract allocated  to each sub-account  by the net  asset
value per share of the underlying Fund shares held by that sub-account. After an
annuity  begins, the votes attributable to any particular contract will decrease
as the reserves decrease. In determining any voting interest, fractional  shares
will be recognized.
  We  shall  notify each  contract owner  or annuitant  of a  Fund shareholders'
meeting if the shares  held for the  contract owner's contract  may be voted  at
such  meeting. We will  also send proxy  materials and a  form of instruction so
that you can instruct us with respect to voting.
 
- - ------------------------------------------------------------------------------
DESCRIPTION OF THE CONTRACTS
 
A.  GENERAL PROVISIONS
 
1.  TYPES OF CONTRACTS OFFERED
 
    (a) Single Payment Variable Annuity Contract
 
    This type  of  contract  may  be  used  in  connection  with  a  pension  or
    profit-sharing  plan under which plan  contributions have been accumulating.
    It may be used in  connection with a plan  which has previously been  funded
    with  insurance or  annuity contracts. It  may be used  under state deferred
    compensation plans or individual retirement annuity programs. It may also be
    purchased by individuals not as a  part of any qualified plan. The  contract
    provides  for a fixed or variable annuity  to begin at some future date with
    the purchase payment made either in a lump sum or in a series of payments in
    a single contract year.
 
    (b) Flexible Payment Variable Annuity Contract
 
    This type of contract  may be used  in connection with  all types of  plans,
    state deferred compensation plans or individual retirement annuities adopted
    by  or on behalf of individuals. It may also be purchased by individuals not
    as a part of  any plan. The  contract provides for a  variable annuity or  a
    fixed  annuity to begin at  some future date with  the purchase payments for
    the contract to be paid prior to  the annuity commencement date in a  series
    of payments flexible in respect to the date and amount of payment.
 
2.  ISSUANCE OF CONTRACTS
The  contracts are issued to  you, the contract owner  named in the application.
The owner of the contract may be the annuitant or someone else.
 
3.  MODIFICATION OF THE CONTRACTS
A contract may be modified at any time by written agreement between you and  us.
However,  no such modification will adversely  affect the rights of an annuitant
under the contract  unless the  modification is  made to  comply with  a law  or
government  regulation.  You  will  have  the  right  to  accept  or  reject the
modification. This right  of acceptance  or rejection is  limited for  contracts
used as individual retirement annuities.
 
4.  ASSIGNMENT
If  the contract is sold in  connection with a tax-qualified program, (including
employer sponsored employee pension  benefit plans, tax-sheltered annuities  and
individual  retirement annuities,) your  or the annuitant's  interest may not be
assigned, sold, transferred, discounted or pledged  as collateral for a loan  or
as  security for the performance of an  obligation or for any other purpose, and
to the maximum  extent permitted  by law,  benefits payable  under the  contract
shall be exempt from the claims of creditors.
  If  the contract is not issued in connection with a tax-qualified program, the
interest of any person in  the contract may be  assigned during the lifetime  of
the  annuitant. We will  not be bound  by any assignment  until we have recorded
written notice of it at our home office. We are not responsible for the validity
of any assignment. An assignment will not apply to any payment or action made by
us before it was recorded. Any proceeds which become payable to an assignee will
be payable in a  single sum. Any claim  made by an assignee  will be subject  to
proof of the assignee's interest and the extent of the assignment.
 
                                                                              21
<PAGE>
5.  LIMITATIONS ON PURCHASE PAYMENTS
For  the single  payment variable annuity  contract, the single  payment will be
deemed to include all  purchase payments made within  12 months of the  contract
date.  The amount of  an initial purchase  payment must be  at least $5,000. The
amount of any subsequent payment  during that 12 month  period must be at  least
$1,000.  Some states, for example,  New Jersey, will limit  these contracts to a
single purchase payment and contracts issued there are so limited.
  You choose when to  make purchase payments under  a flexible payment  variable
annuity  contract. There is no  minimum purchase payment amount  and there is no
minimum amount  which must  be  allocated to  any  sub-account of  the  Variable
Annuity Account or to the General Account.
  Total  purchase  payments under  either  contract may  not  exceed $1,000,000,
except with our consent.
  We may cancel a flexible payment  contract, in our discretion, if no  purchase
payments  are made for a period of two  or more full contract years and both (a)
the total purchase payments made,  less any withdrawals and associated  charges,
and  (b) the accumulation value of the entire contract, are less than $2,000. If
such a cancellation takes place, we will pay you the accumulation value of  your
contract  and we  will notify you,  in advance,  of our intent  to exercise this
right in our annual report which advises contract owners of the status of  their
contracts.  We will act  to cancel the  contract ninety days  after the contract
anniversary unless an additional purchase payment is received before the end  of
that  ninety  day period.  Contracts  issued in  some  states, for  example, New
Jersey, do not  permit such  a cancellation and  contracts issued  there do  not
contain this provision.
  There  may be  limits on  the maximum  contributions to  retirement plans that
qualify for special tax treatment.
 
6.  DEFERMENT OF PAYMENT
Whenever any payment under  a contract is  to be made in  a single sum,  payment
will  be made within seven days after the date such payment is called for by the
terms of the contract, except as payment may be subject for postponement for:
 
    (a) any period during which the New York Stock Exchange is closed other than
        customary weekend and holiday closings,  or during which trading on  the
        New  York Stock Exchange is restricted,  as determined by the Securities
        and Exchange Commission;
 
    (b) any period  during  which  an  emergency exists  as  determined  by  the
        Commission  as  a result  of  which it  is  not reasonably  practical to
        dispose of securities in  the Fund or to  fairly determine the value  of
        the assets of the Fund; or
 
    (c) such  other  periods  as the  Commission  may  by order  permit  for the
        protection of the contract owners.
 
7.  PARTICIPATION IN DIVISIBLE SURPLUS
The contracts  participate in  our divisible  surplus, according  to the  annual
determination  of  our Board  of  Trustees as  to the  portion,  if any,  of our
divisible surplus which has accrued on the contracts.
  No assurance can be given as to the amount of divisible surplus, if any,  that
will be distributable under these contracts in the future. Such amount may arise
if  mortality and  expense experience is  more favorable than  assumed. When any
distribution of divisible surplus  is made, it may  take the form of  additional
payments to annuitants or the crediting of additional accumulation units.
 
B.  ANNUITY PAYMENTS AND OPTIONS
 
1.  ANNUITY PAYMENTS
Variable annuity payments are determined on the basis of (a) the mortality table
specified in the contract, which reflects the age of the annuitant, (b) the type
of  annuity payment option  selected, and (c) the  investment performance of the
Fund Portfolios  selected by  the contract  owner. The  amount of  the  variable
annuity  payments will not be affected by  adverse mortality experience or by an
increase in our expenses in excess of the expense deductions provided for in the
contract. The annuitant  will receive  the value of  a fixed  number of  annuity
units  each month. The value of such units,  and thus the amounts of the monthly
annuity  payments  will,  however,  reflect  investment  gains  and  losses  and
investment income of the Funds, and thus the annuity payments will vary with the
investment experience of the assets of the Portfolio of the Fund selected by the
contract owner.
 
2.  ELECTING THE RETIREMENT DATE AND FORM OF ANNUITY
The  contracts provide for four optional annuity  forms, any one of which may be
elected   if    permitted    by    law.   Each    annuity    option    may    be
 
22
<PAGE>
elected  on either a variable annuity or a fixed annuity basis, or a combination
of the two. Other annuity options may be available from us on request.
  While the contracts require that notice of election to begin annuity  payments
must  be received by us at least 30 days prior to the annuity commencement date,
we are currently waiving  that requirement for  such variable annuity  elections
received  at  least three  valuation days  prior to  the 15th  of the  month. We
reserve the right to enforce the 30 day notice requirement at our option at  any
time in the future.
  Each  contract permits  an annuity payment  to begin  on the first  day of any
month. Under  the contracts  payment must  begin before  the later  of the  85th
birthday  of  the  annuitant, or  five  years after  the  date of  issue  of the
contracts. A variable annuity will be  provided and the annuity option shall  be
Option 2A, a life annuity with a period of 120 months. The minimum first monthly
annuity payment on either a variable or fixed dollar basis is $20. If such first
monthly  payment would be less than $20, we may fulfill our obligation by paying
in a single sum the surrender value  of the contract which would otherwise  have
been applied to provide annuity payments.
  Once  annuity payments have commenced, you cannot surrender an annuity benefit
and receive a single sum settlement in lieu thereof.
  Benefits under  retirement  plans  that  qualify  for  special  tax  treatment
generally  must commence no later  than the April 1  following the year in which
the participant  reaches age  70 1/2  and are  subject to  other conditions  and
restrictions.
 
3.  OPTIONAL ANNUITY FORMS
 
OPTION 1--LIFE ANNUITY
This  is an  annuity payable  monthly during the  lifetime of  the annuitant and
terminating with the last monthly payment preceding the death of the  annuitant.
This  option offers the maximum monthly payment since there is no guarantee of a
minimum number of payments or provision  for a death benefit for  beneficiaries.
It  would be possible  under this option  for the annuitant  to receive only one
annuity payment if he died prior to the due date of the second annuity  payment,
two if he died before the due date of the third annuity payment, etc.
 
OPTION 2--LIFE ANNUITY WITH A PERIOD CERTAIN OF 120 MONTHS (OPTION 2A), 180
MONTHS (OPTION 2B), OR 240 MONTHS (OPTION 2C)
This  is an annuity payable  monthly during the lifetime  of the annuitant, with
the guarantee that if the annuitant dies before payments have been made for  the
period  certain elected,  payments will continue  to the  beneficiary during the
remainder of the period certain. If the beneficiary so elects at any time during
the remainder  of  the  period  certain, the  present  value  of  the  remaining
guaranteed  number of payments, based  on the then current  dollar amount of one
such payment and using the  same interest rate which served  as a basis for  the
annuity shall be paid in a single sum to the beneficiary.
 
OPTION 3--JOINT AND LAST SURVIVOR ANNUITY
This  is an annuity payable  monthly during the joint  lifetime of the annuitant
and a designated joint annuitant and continuing thereafter during the  remaining
lifetime  of the survivor. Under this option  there is no guarantee of a minimum
number of payments or provision for  a death benefit for beneficiaries. If  this
option is elected, the contract and payments shall then be the joint property of
the  annuitant and  the designated joint  annuitant. It would  be possible under
this option for both annuitants to receive only one annuity payment if they both
died prior to  the due  date of  the second annuity  payment, two  if they  died
before the due date of the third annuity payment, etc.
 
OPTION 4--PERIOD CERTAIN ANNUITY
This  is an annuity payable monthly for a  period certain of from 5 to 20 years,
as elected. If the annuitant dies before payments have been made for the  period
certain elected, payments will continue during the remainder of the fixed period
to the beneficiary. Contracts issued prior to May of 1993, or such later date as
we  receive regulatory approval to issue these  new contracts in a state and are
administratively able  to do  so, may  allow the  election of  a period  certain
option  of less than five years. In the event of the death of the annuitant, the
beneficiary may elect  that (1) the  present value of  the remaining  guaranteed
number  of payments, based on the then current dollar amount of one such payment
and using the same interest rate which served as a basis for the annuity,  shall
be  paid in a single sum, or (2) such commuted amount shall be applied to effect
a life annuity under Option 1 or Option 2.
 
                                                                              23
<PAGE>
4.  DETERMINATION OF AMOUNT OF FIRST MONTHLY ANNUITY PAYMENT
Under the  contracts described  in this  Prospectus, the  first monthly  annuity
payment  is determined by  the available value  of the contract  when an annuity
begins. In addition, a number  of states do impose a  premium tax on the  amount
used  to purchase an  annuity benefit, depending  on the type  of plan involved.
Where applicable, these taxes currently range from 0.0% to 3.5% and are deducted
from the contract  value applied  to provide  annuity payments.  We reserve  the
right to make such deductions from purchase payments as they are received.
  The  amount of the first monthly payment  depends on the optional annuity form
elected and the  adjusted age of  the annuitant. A  formula for determining  the
adjusted age is contained in the contract.
  The  contracts contain tables indicating the  dollar amount of the first fixed
monthly payment  under each  optional  annuity form  for  each $1,000  of  value
applied.  The  tables are  determined from  the  Progressive Annuity  Table with
interest at the rate of  3% per annum, assuming births  in the year 1900 and  an
age  setback of six years.  Also, for contracts issued  after 1993 or such later
date as we may be  able to issue this contract  in a jurisdiction, the  contract
contains a provision that applies a contract fee of $200 when a fixed annuity is
elected.  If, when annuity payments are elected,  we are using tables of annuity
rates for these contracts which result  in larger annuity payments, we will  use
those tables instead.
  The  dollar amount of the first monthly variable annuity payment is determined
by applying  the available  value  (after deduction  of  any premium  taxes  not
previously  deducted) to  a rate  per $1,000 which  is based  on the Progressive
Annuity Table with interest at  the rate of 4.5%  per annum, assuming births  in
the  year 1900 and  with an age  setback of six  years. The amount  of the first
payment depends upon the annuity payment option selected and the adjusted age of
the annuity  and  any  joint  annuitant.  A number  of  annuity  units  is  then
determined  by  dividing this  dollar amount  by the  then current  annuity unit
value. Thereafter,  the number  of annuity  units remains  unchanged during  the
period  of annuity payments. This determination is made separately for each sub-
account of the separate account. The number  of annuity units is based upon  the
available  value in  each sub-account  as of  the date  annuity payments  are to
begin.
  The dollar amount determined for each sub-account will then be aggregated  for
purposes of making payment.
  The  4.5% interest  rate assumed in  the variable  annuity determination would
produce level annuity payments if the  net investment rate remained constant  at
4.5%  per year. Subsequent  payments will decrease, remain  the same or increase
depending upon whether the actual net investment rate is less than, equal to, or
greater than 4.5%. A higher interest rate means a higher initial payment, but  a
more  slowly rising (or  more rapidly falling) series  of subsequent payments. A
lower assumption has the opposite effect.  For contracts issued prior to May  of
1993,  or such later date as when  we receive regulatory approval to issue these
new contracts in a state and are administratively able to do so, which  utilized
such  a lower rate, the payments will  differ from these contracts in the manner
described.
  Annuity payments are always made as of the first day of a month. The contracts
require that notice of election to begin annuity payments must be received by us
at least thirty days prior to the annuity commencement date. However,  Minnesota
Mutual  currently waives  this requirement,  and at  the same  time reserves the
right to enforce the thirty day notice at its option in the future.
  Money will be transferred to the  General Account for the purpose of  electing
fixed annuity payments, or to the appropriate variable sub-accounts for variable
annuity payments, on the valuation date coincident with the first valuation date
following  the  fourteenth day  of the  month  preceding the  date on  which the
annuity is to begin.
  If a request for a fixed annuity is received between the first valuation  date
following  the fourteenth day of the month and the second to last valuation date
of the month  prior to commencement,  the transfer will  occur on the  valuation
date  coincident  with  or next  following  the  date on  which  the  request is
received. If a fixed  annuity request is  received after the  third to the  last
valuation  day  of the  month prior  to commencement,  it will  be treated  as a
request received the following month, and the commencement date will be  changed
to the first of the month following the requested commencement date. The account
value  used to determine fixed annuity payments will be the value as of the last
valuation date of the month preceding the date the fixed annuity is to begin.
  If a  variable annuity  request is  received after  the third  valuation  date
preceding the first
 
24
<PAGE>
valuation  date  following  the  fourteenth  day  of  the  month  prior  to  the
commencement date, it will be treated as a request received the following month,
and the commencement date will  be changed to the  first of the month  following
the requested commencement date. The account value used to determine the initial
variable  annuity  payment will  be the  value  as of  the first  valuation date
following the fourteenth day  of the month prior  to the variable annuity  begin
date.
 
5.  AMOUNT OF SECOND AND SUBSEQUENT MONTHLY ANNUITY PAYMENTS
The  dollar amount of the second and later variable annuity payments is equal to
the number of annuity  units determined for each  sub-account times the  annuity
unit  value for that sub-account as of the  due date of the payment. This amount
may increase or decrease from month to month.
 
6.  VALUE OF THE ANNUITY UNIT
The value of an annuity unit for  a sub-account is determined monthly as of  the
first  day  of each  month by  multiplying the  value  on the  first day  of the
preceding month by the product of (a) .996338, and (b) the ratio of the value of
the accumulation unit for that sub-account for the valuation date next following
the fourteenth day of the preceding month to the value of the accumulation  unit
for the valuation date next following the fourteenth day of the second preceding
month  (.996338  is a  factor  to neutralize  the  assumed net  investment rate,
discussed in Section 3  above, of 4.5%  per annum built  into the first  payment
calculation  which is not  applicable because the actual  net investment rate is
credited instead). The value of an annuity unit for a sub-account as of any date
other than the first day of a month is equal to its value as of the first day of
the next succeeding month.
 
7.  TRANSFER OF ANNUITY RESERVES
Amounts held as annuity reserves may  be transferred among the variable  annuity
sub-accounts during the annuity period. Annuity reserves may also be transferred
from  a variable annuity to a fixed annuity during this time. The change must be
made by a written request. The annuitant and joint annuitant, if any, must  make
such an election.
  There  are restrictions to such a transfer. The transfer of an annuity reserve
amount from any  sub-account must  be at  least equal  to $5,000  or the  entire
amount  of  the  reserve remaining  in  that sub-account.  In  addition, annuity
payments must have been in effect for a period of 12 months before a change  may
be  made. Such  transfers can  be made  only once  every 12  months. The written
request for an  annuity transfer must  be received by  us more than  30 days  in
advance  of the due  date of the  annuity payment subject  to the transfer. Upon
request, we  will  make available  to  you annuity  reserve  amount  sub-account
information.
  A  transfer will be  made on the basis  of annuity unit  values. The number of
annuity units from  the sub-account  being transferred  will be  converted to  a
number  of annuity units in the new sub-account. The annuity payment option will
remain the  same and  cannot be  changed.  After this  conversion, a  number  of
annuity  units in the new sub-account will  be payable under the elected option.
The first payment after conversion will be  of the same amount as it would  have
been  without the  transfer. The  number of  annuity units  will be  set at that
number of units which are needed to pay that same amount on the transfer date.
  When we receive a  request for the transfer  of variable annuity reserves,  it
will  be effective for  future annuity payments. The  transfer will be effective
and funds actually  transferred in the  middle of  the month prior  to the  next
annuity  payment  affected  by your  request.  We  will use  the  same valuation
procedures to determine your  variable annuity payment  that we used  initially.
However,  if your  annuity is  based upon annuity  units in  a sub-account which
matures on  a date  other than  the  stated annuity  valuation date,  then  your
annuity  units  will  be  adjusted to  reflect  sub-account  performance  in the
maturing sub-account and the sub-account  to which reserves are transferred  for
the period between annuity valuation dates.
  Amounts  held as reserves to pay a variable annuity may also be transferred to
a fixed annuity during the annuity period. However, the restrictions which apply
to annuity sub-account  transfers will apply  in this case  as well. The  amount
transferred  will then be applied to provide a fixed annuity amount. This amount
will be based upon the adjusted age of the annuitant and any joint annuitant  at
the  time of  the transfer.  The annuity  payment option  will remain  the same.
Amounts paid as a fixed annuity may not be transferred to a variable annuity.
  When we receive a request to make such a transfer to a fixed annuity, it  will
be  effective for  future annuity payments.  The transfer will  be effective and
funds actually transferred in the middle of the month prior to the next  annuity
 
                                                                              25
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payment. We will use the same fixed annuity pricing at the time of transfer that
we use to determine an initial fixed annuity payment.
  Contracts with this transfer feature may not be available in all states.
 
C.  DEATH BENEFITS
The contracts provide that in the event of the death of the owner before annuity
payments  begin, the amount  payable at death will  be the contract accumulation
value determined as of the valuation date coincident with or next following  the
date  due proof of  death is received by  us at our  home office. Death proceeds
will be paid in  a single sum  to the beneficiary  designated unless an  annuity
option  is elected. Payment will be made  within seven days after we receive due
proof of death. Except as noted below, the entire interest in the contract  must
be distributed within five years of the owner's death.
  The single payment variable annuity contract has a guaranteed death benefit if
you  die before annuity payments have started.  The death benefit shall be equal
to the greater of: (1) the amount of the accumulation value payable at death; or
(2) the amount of the total purchase payments paid to us during the first twelve
months as consideration for this contract,  less all contract withdrawals. As  a
matter  of  company practice,  we  use this  method  except that  total purchase
payments will include all contributions, even those made after twelve months  to
determine the death benefit for all contracts offered by this Prospectus.
  If  the owner dies  on or before the  date on which  annuity payments begin we
will pay the greater of the accumulated value or the guaranteed death benefit to
the designated beneficiary. If the designated beneficiary is a person other than
the owner's spouse, that beneficiary may  elect an annuity option measured by  a
period  not  longer than  that  beneficiary's life  expectancy  only so  long as
annuity payments begin not later than one year after the owner's death. If there
is no designated  beneficiary, then the  entire interest in  a contract must  be
distributed  within five  years after the  owner's death. If  the annuitant dies
after annuity  payments  have  begun,  any payments  received  by  a  non-spouse
beneficiary  must be distributed at least as rapidly as under the method elected
by the annuitant as of the date of death.
  If any portion of the contract  interest is payable to the owner's  designated
beneficiary  who is also the surviving spouse of the owner, that spouse shall be
treated as the contract owner for purposes of: (1) when payments must begin, and
(2) the time of distribution in the event of that spouse's death. Payments  must
be made in substantially equal installments.
  If  the owner of this contract is other than a natural person, such as a trust
or other similar entity, we will pay  a death benefit of the accumulation  value
to the named beneficiary on the death of the annuitant, if death occurs prior to
the date for annuity payments to begin.
 
D.  PURCHASE PAYMENTS, VALUE OF THE CONTRACT AND TRANSFERS
 
1.  CREDITING ACCUMULATION UNITS
During  the accumulation period--the period  before annuity payments begin--each
purchase payment  is credited  on the  valuation date  coincident with  or  next
following  the date such purchase payment is  received by us at our home office.
When the contracts are originally issued, application forms are completed by the
applicant and forwarded to our home office. We will review each application form
submitted to us for compliance with our issue criteria and, if it is accepted, a
contract will be issued.
  If the initial purchase payment  is accompanied by an incomplete  application,
that  purchase payment will not be  credited until the valuation date coincident
with or next  following the date  a completed application  is received. We  will
offer  to  return  the  initial  purchase  payment  accompanying  an  incomplete
application if it appears that the  application cannot be completed within  five
business days.
  Purchase payments will be credited to the contract in the form of accumulation
units.  The number of accumulation units  credited with respect to each purchase
payment is determined by dividing the portion of the purchase payment  allocated
to  each  sub-account  by the  then  current  accumulation unit  value  for that
sub-account.
  The number of  accumulation units so  determined shall not  be changed by  any
subsequent  change in  the value of  an accumulation  unit, but the  value of an
accumulation unit will vary from valuation date to valuation date to reflect the
investment experience of the Funds.
  We will determine the  value of accumulation  units on each  day on which  the
Funds are valued. The net asset value of the Funds'
 
26
<PAGE>
shares shall be computed once daily, and, in the case of Money Market Portfolio,
after  the declaration of the daily dividend, as of the primary closing time for
business on the New York Stock Exchange (as of the date hereof the primary close
of trading is 3:00 p.m.  (Central Time), but this time  may be changed) on  each
day,  Monday through Friday,  except (i) days  on which changes  in the value of
such Fund's  portfolio securities  will not  materially affect  the current  net
asset  value of such Fund's shares, (ii) days during which no such Fund's shares
are tendered for redemption and no order to purchase or sell such Fund's  shares
is received by such Fund and (iii) customary national business holidays on which
the  New York Stock Exchange  is closed for trading (as  of the date hereof, New
Year's Day, Presidents' Day, Good Friday, Memorial Day, Independence Day,  Labor
Day, Thanksgiving Day and Christmas Day). Accordingly, the value of accumulation
units  so determined will be applicable to  all purchase payments received by us
at our home office on that day prior  to the close of business of the  Exchange.
The  value of accumulation units applicable  to purchase payments received after
the close of business of the Exchange  will be the value determined on the  next
valuation date.
  In  addition  to providing  for  the allocation  of  purchase payments  to the
sub-accounts of the  Variable Annuity  Account, the contracts  also provide  for
allocation  of purchase  payments to our  General Account for  accumulation at a
guaranteed interest  rate.  Applications  received without  instructions  as  to
allocation  will be  treated as  incomplete. Upon  your written  request, values
under the  contract may  be  transferred between  our  General Account  and  the
Variable  Annuity  Account or  among the  sub-accounts  of the  Variable Annuity
Account. We will make the transfer on  the basis of accumulation unit values  on
the  valuation date  coincident with  or next following  the day  we receive the
request at our home  office. No deferred  sales charge will  be imposed on  such
transfers.  There is no dollar amount  limitation which is applied to transfers.
The contracts permit us to limit the frequency and amount of transfers from  our
General Account to the Variable Annuity Account.
  Currently,  except as provided below, we limit such transfers to a single such
transfer during any calendar year and to any amount which is no more than 20% of
the General Account accumulation value at the time of the transfer.
  There is one situation  which is an exception  to the above restriction.  That
situation  is where  the contract  owner has  established a  systematic transfer
arrangement with us.  The contract  owner may transfer  General Account  current
interest  earnings or a specified amount from  the General Account on a monthly,
quarterly, semi-annual or annual basis. For transfers of a specified amount from
the General Account the maximum initial  amount that may be transferred may  not
exceed  10% of the current General Account accumulation value at the time of the
first transfer. For contracts  where the General  Account accumulation value  is
increased  during  the year  because of  transfers into  the General  Account or
additional purchase payments, made after the program is established,  systematic
transfers  are allowed  to the  extent of  the greater  of the  current transfer
amount or 10% of the then current General Account accumulation value. Even  with
respect to systematic transfer plans, we reserve the right to alter the terms of
such  programs once  established where  funds are  being transferred  out of the
General Account. Our alteration of existing systematic transfer programs will be
effective only upon our written notice  to contract owners of changes  affecting
their election.
  Systematic transfer arrangements are limited to the use of a maximum of twenty
sub-accounts.
  Transfer  arrangements may be established to begin  on the 10th or 20th of any
month and  if a  transfer  cannot be  completed  it will  be  made on  the  next
available transfer date. In the absence of specific instructions, transfers will
be  made on a monthly basis and will remain active until the appropriate General
Account accumulation value or sub-account is depleted.
  Also, you or persons authorized  by you may effect  transfers, or a change  in
the  allocation of future premiums,  by means of a  telephone call. Transfers or
requests made pursuant to  such a call  are subject to  the same conditions  and
procedures  as are outlined above for  written transfer requests. During periods
of marked economic or market changes, contract owners may experience  difficulty
in  implementing a telephone transfer due to  a heavy volume of telephone calls.
In such a  circumstance, contract  owners should consider  submitting a  written
transfer  request while continuing to attempt a telephone redemption. We reserve
the right to restrict the frequency of--or
 
                                                                              27
<PAGE>
otherwise  modify,  condition,  terminate  or  impose  charges   upon--telephone
transfer  privileges.  For  more  information  on  telephone  transfers, contact
Minnesota Mutual.
  While for some contract owners we have used a form to pre-authorize  telephone
transactions,  we now make this service  automatically available to all contract
owners.  We  will  employ  reasonable  procedures  to  satisfy  ourselves   that
instructions  received from contract owners are  genuine and, to the extent that
we do not, we  may be liable  for any losses due  to unauthorized or  fraudulent
instructions.  We  require contract  owners  or a  person  authorized by  you to
personally identify themselves in those telephone conversations through contract
numbers, social security numbers and such other information as we may deem to be
reasonable. We  record  telephone  transfer  instruction  conversations  and  we
provide  the  contract  owners  with a  written  confirmation  of  the telephone
transfer.
  The interests  of contract  owners  arising from  the allocation  of  purchase
payments  or the  transfer of  contract values  to our  General Account  are not
registered under  the  Securities Act  of  1933. We  are  not registered  as  an
investment  company under the Investment Company  Act of 1940. Accordingly, such
interests are not subject to  the provisions of those  acts that would apply  if
registration under such acts were required.
 
2.  VALUE OF THE CONTRACT
The  Accumulation Value of the contract at any time prior to the commencement of
annuity  payments  can  be  determined  by  multiplying  the  total  number   of
accumulation  units  credited  to  the  contract  by  the  current  value  of an
accumulation unit. There is  no assurance that such  value will equal or  exceed
the  purchase payments made. The contract  owner will be advised periodically of
the number of accumulation units credited to the contract, the current value  of
an accumulation unit, and the total value of the contract.
 
3.  ACCUMULATION UNIT VALUE
The  value of an accumulation unit for  each sub-account of the Variable Annuity
Account was set at $1.000000 on the first valuation date of the Variable Annuity
Account. The value of an accumulation  unit on any subsequent valuation date  is
determined  by multiplying the value of  an accumulation unit on the immediately
preceding valuation  date  by  the  net investment  factor  for  the  applicable
sub-account  (described below) for the valuation period just ended. The value of
an accumulation unit as of any date other than a valuation date is equal to  its
value on the next succeeding valuation date.
 
4.  NET INVESTMENT FACTOR FOR EACH VALUATION PERIOD
The net investment factor is an index used to measure the investment performance
of a sub-account from one valuation period to the next. For any sub-account, the
net  investment factor for a  valuation period is the  gross investment rate for
such sub-account for the  valuation period, less a  deduction for the  mortality
and expense risk charge at the current rate of 1.25% per annum.
  The  gross investment rate is equal to: (1) the net asset value per share of a
Portfolio share held in a sub-account of the Variable Annuity Account determined
at the end of the current valuation period, plus (2) the per share amount of any
dividend or capital gain distribution by the Portfolio if the "ex-dividend" date
occurs during the current valuation period,  divided by (3) the net asset  value
per  share  of that  Portfolio  share determined  at  the end  of  the preceding
valuation period. The gross investment rate may be positive or negative.
 
E.  REDEMPTIONS
 
1.  PARTIAL WITHDRAWALS AND SURRENDER
Under both  contracts, the  contracts provide  that prior  to the  date  annuity
payments begin partial withdrawals may be made by you from the contract for cash
amounts of at least $250. You must make a written request for any withdrawal. In
this  event,  the  accumulation value  will  be  reduced by  the  amount  of the
withdrawal  and  any  applicable  deferred  sales  charge.  In  the  absence  of
instructions  to the contrary, withdrawals will be made from the General Account
accumulation value and from the  Variable Annuity Account accumulation value  in
the  same proportion. In  the absence of instructions,  withdrawals will be made
from the sub-accounts on a pro rata  basis. We will waive the applicable  dollar
amount  limitation on  withdrawals where a  systematic withdrawal  program is in
place and such a smaller amount satisfies the minimum distribution  requirements
of  the  Code.  In  the  absence of  instructions  to  the  contrary, systematic
withdrawals will  be  made  from  the  sub-accounts  on  a  pro  rata  basis  if
accumulation values are in no more than twenty sub-accounts. If more than twenty
sub-accounts  have accumulation  values, we will  need instructions  as to those
sub-accounts from
 
28
<PAGE>
which systematic withdrawals  are to  be made. For  systematic withdrawals,  the
maximum number of sub-accounts which may be used is twenty.
  The  contracts provide that prior to the commencement of annuity payments, you
may elect to surrender the contract for its surrender value. You will receive in
a single  cash sum  the accumulation  value computed  as of  the valuation  date
coincident  with  or  next  following  the date  of  surrender,  reduced  by any
applicable deferred sales charge and the administrative charge, or you may elect
an annuity.
  For more information  on the  application of  the deferred  sales charge,  see
"Sales Charges" on page 18.
  Once  annuity payments have  commenced for an  annuitant, the annuitant cannot
surrender his  annuity benefit  and  receive a  single  sum settlement  in  lieu
thereof.  For a discussion of commutation rights of annuitants and beneficiaries
subsequent to the  annuity commencement  date, see "Optional  Annuity Forms"  on
page 23.
  Contract  owners may also submit their  signed written withdrawal or surrender
requests to Minnesota Mutual by facsimile (FAX) transmission. Our FAX number  is
(612)  665-7942. Transfer  instructions or changes  as to  future allocations of
premium payments may  be communicated  to us  by the  same means.  Payment of  a
partial  withdrawal or  surrender will  be made  to you  within 7  days after we
receive your completed request.
 
2.  RIGHT OF CANCELLATION
You should read the contract carefully as soon as it is received. You may cancel
the purchase of a contract within ten  days after its delivery, for any  reason,
by  giving us  written notice  at 400 Robert  Street North,  St. Paul, Minnesota
55101-2098, of  an  intention  to  cancel. If  the  contract  is  cancelled  and
returned, we will refund to you the greater of (a) the accumulation value of the
contract,  or  (b) the  amount  of purchase  payments  paid under  the contract.
Payment of the requested refund will be  made to you within seven days after  we
receive notice of cancellation.
  In  some states, such as California, the  free look period may be extended. In
California, the free look period is extended to thirty days' time for  contracts
issued  or delivered to owners that are sixty  years of age or older at the time
of delivery. Those rights are subject to change and may vary among the states.
  The liability of the Variable Annuity  Account under the foregoing is  limited
to  the  accumulation value  of  the contract  at the  time  it is  returned for
cancellation. Any additional amounts necessary to  make our refund to you  equal
to the purchase payments will be made by us.
 
- - ------------------------------------------------------------------------
FEDERAL TAX STATUS
 
INTRODUCTION
The  discussion contained herein is general in nature and is not intended as tax
advice. Each person concerned should consult a competent tax adviser. No attempt
is made to consider any  applicable state or other  tax laws. In addition,  this
discussion  is based on our understanding of federal income tax laws as they are
currently interpreted. No  representation is  made regarding  the likelihood  of
continuation  of current income  tax laws or the  current interpretations of the
Internal Revenue Service.
  We are taxed as  a "life insurance company"  under the Internal Revenue  Code.
The  operations of the  Variable Annuity Account  form a part  of, and are taxed
with, our other business activities. Currently, no federal income tax is payable
by us on income dividends received by the Variable Annuity Account or on capital
gains arising  from  the Variable  Annuity  Account's activities.  The  Variable
Annuity  Account is not taxed as a "regulated investment company" under the Code
and it does not anticipate any change in that tax status.
 
TAXATION OF ANNUITY CONTRACTS IN GENERAL
Section 72 of the Code governs taxation of nonqualified annuities in general and
some aspects of  qualified programs. No  taxes are imposed  on increases in  the
value  of a contract until distribution occurs,  either in the form of a payment
in a single sum or  as annuity payments under the  annuity option elected. As  a
general  rule, deferred annuity contracts held  by a corporation, trust or other
similar entity,  as opposed  to a  natural person,  are not  treated as  annuity
contracts  for federal tax purposes. The  investment income on such contracts is
taxed as  ordinary income  that  is received  or accrued  by  the owner  of  the
contract during the taxable year.
  For  payments made in the event of a full surrender of an annuity, the taxable
portion   is   generally   the   amount   in   excess   of   the   cost    basis
 
                                                                              29
<PAGE>
(i.e.,  purchase payments) of the contract.  Amounts withdrawn from the variable
annuity contracts not part of a  qualified program are treated first as  taxable
income  to the  extent of  the excess  of the  contract value  over the purchase
payments made under  the contract.  Such taxable  portion is  taxed at  ordinary
income tax rates.
  In  the case  of a  withdrawal under an  annuity that  is part  of a qualified
program, a portion of the amount received  is taxable based on the ratio of  the
"investment in the contract" to the individual's balance in the retirement plan,
generally  the value of the annuity.  The "investment in the contract" generally
equals the portion of any deposits made  by or on behalf of an individual  under
an  annuity which was not excluded from  the gross income of the individual. For
annuities issued  in connection  with qualified  plans, the  "investment in  the
contract" can be zero.
  For annuity payments, the taxable portion is generally determined by a formula
that  establishes the  ratio that the  cost basis  of the contract  bears to the
expected return  under the  contract. Such  taxable part  is taxed  at  ordinary
income rates.
  If  a taxable  distribution is  made under  the variable  annuity contracts, a
penalty tax of 10%  of the amount  of the taxable  distribution may apply.  This
additional  tax does  not apply  where the  taxpayer is  59 1/2  or older, where
payment is made  on account of  the taxpayer's disability,  or where payment  is
made by reason of the death of the owner, and in certain other circumstances.
  The  Code also provides an exception to  the penalty tax for distributions, in
periodic payments, of substantially equal installments, be made for the life (or
life expectancy) of the taxpayer or the joint lives (or joint life expectancies)
of the taxpayer and beneficiary.
  For some types of  qualified plans, other tax  penalties may apply to  certain
distributions.
  A  transfer of  ownership of  a contract, the  designation of  an annuitant or
other payee  who is  not  also the  contract owner,  or  the assignment  of  the
contract  may result in certain income or  gift tax consequences to the contract
owner that are  beyond the scope  of this  discussion. A contract  owner who  is
contemplating  any  such transfer,  designation or  assignment should  consult a
competent tax  adviser  with  respect  to the  potential  tax  effects  of  that
transaction.
  For purposes of determining a contract owner's gross income, the Code provides
that  all nonqualified deferred annuity contracts issued by the same company (or
its affiliates) to  the same contract  owner during any  calendar year shall  be
treated  as one annuity contract. Additional rules may be promulgated under this
provision to  prevent  avoidance  of  its effect  through  serial  contracts  or
otherwise. For further information on these rules, see your tax adviser.
 
DIVERSIFICATION REQUIREMENTS
Section  817(h)  of  the  Code  authorizes  the  Treasury  to  set  standards by
regulation or otherwise for the investments  of the Variable Annuity Account  to
be  "adequately  diversified" in  order for  the  contract to  be treated  as an
annuity contract for Federal tax purposes. The Variable Annuity Account, through
the Fund, intends to comply with the diversification requirements prescribed  in
Regulations Section 1.817-5, which affect how the Fund's assets may be invested.
Although  the investment adviser is an  affiliate of Minnesota Mutual, Minnesota
Mutual does not  have control  over the  Fund or  its investments.  Nonetheless,
Minnesota  Mutual believes that each Portfolio of the Fund in which the Variable
Annuity Account owns shares will be operated in compliance with the requirements
prescribed by the Treasury.
  In  certain  circumstances,  owners  of  variable  annuity  contracts  may  be
considered  the owners, for  federal income tax  purposes, of the  assets of the
separate account used to support their contracts. In those circumstances, income
and gains from the separate account  assets would be includable in the  variable
annuity  contract owner's gross income. The  IRS has stated in published rulings
that a variable contract owner will be considered the owner of separate  account
assets  if the contract owner possesses  incidents of ownership in those assets,
such as the ability to exercise investment control over the assets. The Treasury
Department has also announced,  in connection with  the issuance of  regulations
concerning  investment diversification,  that those regulations  "do not provide
guidance  concerning  the  circumstances  in  which  investor  control  of   the
investments  of a  segregated asset  account may  cause the  investor (i.e., the
contract owner), rather than the insurance  company, to be treated as the  owner
of the assets in the account." This announcement also states that guidance would
be issued by way of regulations or rulings on the "extent to which policyholders
may direct their
 
30
<PAGE>
investments  to particular  subaccounts without being  treated as  owners of the
underlying assets." As of the date of this Prospectus, no such guidance has been
issued.
  The ownership  rights under  the contract  are similar  to, but  different  in
certain  respects from, those  described by the  IRS in rulings  in which it was
determined that contract owners were not owners of separate account assets.  For
example, the owner of a contract has the choice of several sub-accounts in which
to  allocate  net purchase  payments and  contract  values, and  may be  able to
transfer  among  sub-accounts  more  frequently  than  in  such  rulings.  These
differences  could result in a contract owner  being treated as the owner of the
assets of the Variable Annuity Account.  In addition, Minnesota Mutual does  not
know  what standards will  be set forth,  if any, in  the regulations or rulings
which the Treasury Department has stated  it expects to issue. Minnesota  Mutual
therefore  reserves the right to modify the  contract as necessary to attempt to
prevent a contract owner from being considered the owner of a pro rata share  of
the assets of the Variable Annuity Account.
 
REQUIRED DISTRIBUTIONS
In  order to be treated as an  annuity contract for federal income tax purposes,
Section 72(s)  of  the Code  requires  any nonqualified  contract  issued  after
January  18, 1985 to provide that  (a) if an owner dies  on or after the annuity
starting date but prior to the time the entire interest in the contract has been
distributed, the remaining portion of such interest will be distributed at least
as rapidly as under the method of distribution being used as of the date of that
owner's death; and (b) if an owner dies prior to the annuity starting date,  the
entire  interest in the contract must be distributed within five years after the
date of the owner's death. These  requirements shall be considered satisfied  if
any  portion of the owner's interest which is payable to or for the benefit of a
"designated beneficiary" is  distributed over  the life of  such beneficiary  or
over  a period not extending beyond the  life expectancy of that beneficiary and
such distributions begin  within one  year of  that owner's  death. The  owner's
"designated beneficiary" is the person designated by such owner as a beneficiary
and  to whom ownership of the  contract passes by reason of  death. It must be a
natural  person.  However,  if  the  owner's  "designated  beneficiary"  is  the
surviving  spouse of the owner, the contract may be continued with the surviving
spouse as the new owner.
  Nonqualified contracts issued after January 18, 1985 contain provisions  which
are  intended to  comply with  the requirements  of Section  72(s) of  the Code,
although no regulations  interpreting these requirements  have yet been  issued.
Minnesota  Mutual intends to review such provisions and modify them if necessary
to assure that  they comply  with the requirements  of Code  Section 72(s)  when
clarified by regulation or otherwise.
  Other rules may apply to qualified contracts.
 
TAXATION OF DEATH BENEFIT PROCEEDS
Amounts  may be distributed from  a contract because of  the death of the owner.
Generally, such  amounts  are includable  in  the  income of  the  recipient  as
follows:  (1) if distributed in a lump sum, they are taxed in the same manner as
a full surrender  of the  contract, as described  above, or  (2) if  distributed
under  an annuity option, they are taxed in the same manner as annuity payments,
as described above.
 
POSSIBLE CHANGES IN TAXATION
In the  past years,  legislation has  been proposed  that would  have  adversely
modified  the  federal  taxation of  certain  annuities. For  example,  one such
proposal would have changed the tax treatment of nonqualified annuities that did
not have "substantial life contingencies" by taxing income as it is credited  to
the annuity. Although as of the date of this Prospectus Congress is not actively
considering any legislation regarding the taxation of annuities, there is always
the  possibility that the tax treatment of annuities could change by legislation
or other means (such  as IRS regulations,  revenue rulings, judicial  decisions,
etc.).  Moreover, it is also possible that any change could be retroactive (that
is, effective prior to the date of the change).
 
TAX QUALIFIED PROGRAMS
The annuity is  designed for  use with several  types of  retirement plans  that
qualify  for special tax treatment. The tax rules applicable to participants and
beneficiaries in retirement  plans vary according  to the type  of plan and  the
terms  and  conditions  of the  plan.  Special  favorable tax  treatment  may be
available for  certain types  of contributions  and distributions.  Adverse  tax
consequences  may  result  from  contributions in  excess  of  specified limits;
distributions prior to age 59 1/2 (subject to certain exceptions); distributions
that  do  not  conform  to  specified  minimum  distribution  rules;   aggregate
 
                                                                              31
<PAGE>
distributions  in excess  of a specified  annual amount; and  in other specified
circumstances.
  We make  no attempt  to provide  more than  general information  about use  of
annuities  with the various  types of retirement  plans. Owners and participants
under retirement plans  as well  as annuitants and  beneficiaries are  cautioned
that  the rights  of any  person to  any benefits  under annuities  purchased in
connection with these plans may  be subject to the  terms and conditions of  the
plans  themselves, regardless of the terms  and conditions of the annuity issued
in connection with such  a plan. Some retirement  plans are subject to  transfer
restrictions, distribution and other requirements that are not incorporated into
the  annuity or our annuity  administration procedures. Owners, participants and
beneficiaries are responsible for determining that contributions,  distributions
and other transactions with respect to the annuities comply with applicable law.
Purchasers  of annuities for  use with any retirement  plan should consult their
legal counsel and tax adviser regarding the suitability of the contract.
 
PUBLIC SCHOOL SYSTEMS AND CERTAIN TAX EXEMPT ORGANIZATIONS
Under Code Section 403(b),  payments made by public  school systems and  certain
tax  exempt organizations to purchase annuity  contracts for their employees are
excludable  from  the  gross  income   of  the  employee,  subject  to   certain
limitations.  However, these payments  may be subject  to FICA (Social Security)
taxes.
  Code Section 403(b)(11) restricts the  distribution under Code Section  403(b)
annuity  contracts of: (1) elective contributions  made in years beginning after
December 31, 1988; (2) earnings on those contributions; and (3) earnings in such
years on amounts  held as of  the last  year beginning before  January 1,  1989.
Distribution  of  those  amounts may  only  occur  upon death  of  the employee,
attainment of  age 59  1/2, separation  from service,  disability, or  financial
hardship.  In addition, income attributable to elective contributions may not be
distributed in the case of hardship.
 
INDIVIDUAL RETIREMENT ANNUITIES
Code Sections 219 and 408 permit individuals or their employers to contribute to
an individual retirement program known as an "Individual Retirement Annuity"  or
"IRA".  Individual Retirement Annuities are subject to limitations on the amount
which may  be contributed  and  deducted and  the  time when  distributions  may
commence.  In  addition, distributions  from certain  other types  of retirement
plans may be  placed into  an Individual Retirement  Annuity on  a tax  deferred
basis.  Employers  may establish  Simplified  Employee Pension  (SEP)  Plans for
making IRA contributions on behalf of their employees.
 
SIMPLE RETIREMENT ACCOUNTS
Beginning  January  1,  1997,  certain  small  employers  may  establish  Simple
Retirement  Accounts  as provided  by Section  408(p) of  the Code,  under which
employees may elect  to defer  up to  $6,000 (as  increased for  cost of  living
adjustments)  as  a  percentage  of  compensation.  The  sponsoring  employer is
required to make a  matching contribution on  behalf of contributing  employees.
Distributions  from  a  Simple  Retirement  Account  are  subject  to  the  same
restrictions that apply to IRA distributions  and are taxed as ordinary  income.
Subject  to certain exceptions, premature distributions  prior to age 59 1/2 are
subject to a  10% penalty tax,  which is  increased to 25%  if the  distribution
occurs  within  the first  two years  after the  commencement of  the employee's
participation in the plan. The failure of the Simple Retirement Account to  meet
Code requirements may result in adverse tax consequences.
 
CORPORATE PENSION AND PROFIT-SHARING PLANS AND H.R. 10 PLANS
Code  Section 401(a) permits employers to  establish various types of retirement
plans  for  employees,  and  permits  self-employed  individuals  to   establish
retirement  plans for themselves and their employees. These retirement plans may
permit the purchase of the contracts to accumulate retirement savings under  the
plans.  Adverse tax or other legal consequences  to the plan, to the participant
or to  both  may result  if  this annuity  is  assigned or  transferred  to  any
individual as a means to provide benefit payments, unless the plan complies with
all  legal requirements  applicable to  such benefits  prior to  transfer of the
annuity.
 
DEFERRED COMPENSATION PLANS
Code Section 457 provides for  certain deferred compensation plans. These  plans
may be offered with respect to service for state governments, local governments,
political  subdivisions, agencies,  instrumentalities and  certain affiliates of
such entities, and tax exempt  organizations. The plans may permit  participants
to  specify the form of investment for their deferred compensation account. With
respect to non-governmental Section 457
 
32
<PAGE>
plans, investments are owned by the  sponsoring employer and are subject to  the
claims  of the general creditors  of the employer and  depending on the terms of
the particular plan, the  employer may be entitled  to draw on deferred  amounts
for  purposes unrelated  to its  Section 457  plan obligations.  In general, all
amounts received under a Section 457 plan are taxable and are subject to federal
income tax withholding as wages.
WITHHOLDING
In general,  distributions from  annuities  are subject  to federal  income  tax
withholding  unless the  recipient elects  not to  have tax  withheld. Different
rules may apply  to payments delivered  outside the United  States. Some  states
have enacted similar rules.
  Recent  changes  to the  Code allow  the rollover  of most  distributions from
tax-qualified plans and Section 403(b) annuities directly to other tax-qualified
plans that will accept such distributions and to individual retirement  accounts
and  individual retirement annuities. Distributions which may not be rolled over
are those which are: (1) one of a series of substantially equal annual (or  more
frequent)  payments made (a) over  the life or life  expectancy of the employee,
(b) the joint  lives or joint  expectancies of the  employee and the  employee's
designated  beneficiary, or (c) for a specified period of ten years or more; (2)
a  required  minimum  distribution;  or   (3)  the  non-taxable  portion  of   a
distribution.
  Any  distribution  eligible  for rollover,  which  may include  payment  to an
employee, an employee's  surviving spouse or  an ex-spouse who  is an  alternate
payee,  will be  subject to  federal tax  withholding at  a 20%  rate unless the
distribution is made  as a  direct rollover  to a  tax-qualified plan  or to  an
individual  retirement account or annuity. It may be noted that amounts received
by individuals which are  eligible for rollover may  still be placed in  another
tax-qualified  plan or  individual retirement  account or  individual retirement
annuity if the transaction  is completed within 60  days after the  distribution
has  been received.  Such a  taxpayer must  replace withheld  amounts with other
funds to avoid taxation on the amount previously withheld.
SEE YOUR OWN TAX ADVISER
It should be understood that the foregoing description of the federal income tax
consequences under these contracts is not exhaustive and that special rules  are
provided  with respect  to situations  not discussed  herein. It  should also be
understood that should  a plan lose  its qualified status,  employees will  lose
some  of the tax  benefits described. Statutory changes  in the Internal Revenue
Code with varying effective dates,  and regulations adopted thereunder may  also
alter the tax consequences of specific factual situations. Due to the complexity
of  the applicable laws, tax advice may  be needed by a person contemplating the
purchase of a  variable annuity contract  or exercising elections  under such  a
contract. For further information a qualified tax adviser should be consulted.
 
- - ------------------------------------------------------------------------
RESTRICTIONS UNDER THE TEXAS OPTIONAL RETIREMENT PROGRAM
 
Section  36.105, Title 110B of the Texas Revised Civil Statutes, consistent with
prior interpretations of  the Attorney General  of the State  of Texas,  permits
participants  in the  Texas Optional  Retirement Program  (ORP) to  redeem their
interests in a  variable annuity  contract issued under  the ORP  only upon  (1)
termination  of employment in all institutions of higher education as defined in
Texas law, (2) retirement,  or (3) death. Accordingly,  participants in the  ORP
will  be required to obtain certifications  from their employers of their status
with respect to ORP employers before they may redeem their contract or  transfer
contract values to another carrier qualified to participate in ORP.
 
- - ------------------------------------------------------------------------
STATEMENT OF ADDITIONAL INFORMATION
A  Statement of  Additional Information,  which contains  additional information
including financial  statements,  is available  from  the offices  of  Minnesota
Mutual  at your request. The Table of  Contents for that Statement of Additional
Information is as follows:
    Trustees and Principal Management Officers of Minnesota Mutual
     Distribution of Contracts
     Performance Data
     Auditors
     Registration Statement
     Financial Statements
 
                                                                              33
<PAGE>
APPENDIX A--ILLUSTRATION OF VARIABLE ANNUITY VALUES
 
The  illustration  included  in this  appendix  shows the  effect  of investment
performance on the monthly variable  annuity income. The illustration assumes  a
gross investment return, after tax, of: 0%, 6.54% and 12.00%.
  For  illustration purposes,  an average annual  expense equal to  2.04% of the
average daily  net  assets is  deducted  from  the gross  investment  return  to
determine  the net investment return. The net  investment return is then used to
project the  monthly  variable annuity  incomes.  The expense  charge  of  2.04%
includes:  1.25% for  mortality and  expense risk,  and an  average of  .79% for
investment management and  other fund  expenses. These expenses  are listed  for
each portfolio in the table following.
  The  gross and net investment rates are for illustrative purposes only and are
not a reflection of past or  future performance. Actual variable annuity  income
will  be more or less than shown if  the actual returns are different than those
illustrated.
  The illustration assumes 100% of the assets are invested in sub-account(s)  of
the  Variable Annuity Account. For comparison  purposes, a current fixed annuity
income, available through the general account is also provided. The illustration
assumes an initial interest rate, used  to determine the first variable  payment
of  4.50%.  After  the  first variable  annuity  payment,  future  payments will
increase if the annualized net rate of return exceeds the initial interest rate,
and will decrease if the annualized net rate of return is less than the  initial
interest rate.
  The  illustration provided is for a male, age 65, selecting a life and 10 year
certain annuity option  with $100,000  of non-qualified funds,  residing in  the
State  of Minnesota.  Upon request,  we will  provide a  comparable illustration
based upon the proposed annuitant's date of birth, sex, annuity option, state of
residence, type of  funds, value  of funds, and  selected gross  annual rate  of
return (not to exceed 12%).
 
             ACTUAL 1996 VARIABLE ANNUITY SEPARATE ACCOUNT CHARGES
                               AND FUND EXPENSES
 
<TABLE>
<CAPTION>
                                                   FUND          OTHER
SEPARATE ACCOUNT                 MORTALITY &    MANAGEMENT        FUND       DISTRIBUTION
SUB-ACCOUNT NAME                EXPENSE RISK        FEE         EXPENSES       EXPENSES     TOTAL
- - ------------------------------  -------------   -----------   ------------   ------------   ------
<S>                             <C>             <C>           <C>            <C>            <C>
Growth........................      1.25%           .50%          .09%         --            1.84%
Bond..........................      1.25%           .50%          .06%         --            1.81%
Money Market..................      1.25%           .50%          .10%         --            1.85%
Asset Allocation..............      1.25%           .50%          .04%         --            1.79%
Mortgage Securities...........      1.25%           .50%          .08%         --            1.83%
Index 500.....................      1.25%           .40%          .05%         --            1.70%
Capital Appreciation..........      1.25%           .75%          .10%         --            2.10%
International Stock...........      1.25%           .74%          .32%         --            2.31%
Small Company.................      1.25%           .75%          .06%         --            2.06%
Value Stock...................      1.25%           .75%          .08%         --            2.08%
Maturing Government Bond
 1998.........................      1.25%           .05%          .15%         --            1.45%
Maturing Government Bond
 2002.........................      1.25%           .05%          .15%         --            1.45%
Maturing Government Bond
 2006.........................      1.25%           .25%          .15%         --            1.65%
Maturing Government Bond
 2010.........................      1.25%           .25%          .15%         --            1.65%
Small Company.................      1.25%           .75%          .15%         --            2.15%
International Bond............      1.25%           .60%         1.00%         --            2.85%
Index 400 Mid-Cap.............      1.25%           .40%          .15%         --            1.80%
Micro-Cap Value...............      1.25%          1.25%          .15%         --            2.65%
Macro-Cap Value...............      1.25%           .70%          .15%         --            2.10%
Micro-Cap Growth..............      1.25%          1.10%          .15%         --            2.50%
Templeton Developing Markets
 Class 2......................      1.25%          1.25%          .53%           .25%*       3.28%
                                                                                  --
                                     ---            ---           ---                       ------
        Average...............      1.25%           .60%          .18%           .01%        2.04%
</TABLE>
 
*For the purpose of this illustration, the term "Other Fund Expenses" includes a
 distribution fee in this Fund of .25%.
 
34
<PAGE>
                      VARIABLE ANNUITY PAYOUT ILLUSTRATION
 
PREPARED FOR: Prospect
 
PREPARED BY: Minnesota Mutual
 
SEX: Male    DATE OF BIRTH: 05/01/32
 
STATE: MN
 
LIFE EXPECTANCY: 20.0 (IRS) 17.3 (MML)
 
ANNUITIZATION OPTION: 10 Year Certain with Life Contingency
 
QUOTATION DATE: 05/01/97
 
COMMENCEMENT DATE: 06/01/97
 
SINGLE PAYMENT RECEIVED: $100,000.00
FUNDS: Non-Qualified
 
INITIAL MONTHLY INCOME: $678
 
  The  monthly variable  annuity income  amount shown  below assumes  a constant
annual investment return. The initial interest rate of 4.50% is the assumed rate
used to calculate the first  monthly payment. Thereafter, monthly payments  will
increase or decrease
 
based   upon  the  relationship  between  the  initial  interest  rate  and  the
performance of the  sub-account(s) selected.  The investment  returns shown  are
hypothetical and not a representation of future results.
 
<TABLE>
<CAPTION>
                                                                            ANNUAL RATE OF RETURN
                                                         -----------------------------------------------------------
                                                                       0% GROSS        6.54% GROSS     12.00% GROSS
DATE                                                        AGE      (-2.04% NET)      (4.50% NET)     (9.96% NET)
- - -------------------------------------------------------  ---------  ---------------  ---------------  --------------
<S>                                                      <C>        <C>              <C>              <C>
June 1, 1997...........................................         65     $     678        $     678       $      678
June 1, 1998...........................................         66           636              678              714
June 1, 1999...........................................         67           596              678              751
June 1, 2000...........................................         68           559              678              790
June 1, 2001...........................................         69           524              678              832
June 1, 2006...........................................         74           379              678            1,073
June 1, 2011...........................................         79           274              678            1,384
June 1, 2016...........................................         84           199              678            1,785
June 1, 2021...........................................         89           144              678            2,303
June 1, 2026...........................................         94           104              678            2,971
June 1, 2031...........................................         99            75              678            3,832
June 1, 2032...........................................        100            71              678            4,032
</TABLE>
 
  IF  100%  OF YOUR  PURCHASE  WAS APPLIED  TO PROVIDE  A  FIXED ANNUITY  ON THE
QUOTATION DATE OF THIS  ILLUSTRATION, THE FIXED ANNUITY  INCOME AMOUNT WOULD  BE
$742.
  Net  rates of  return reflect  expenses totaling  2.04%, which  consist of the
1.25% Variable Annuity Account  mortality and expense risk  charge and .79%  for
the  Fund management fee  and other Fund  expenses (this is  an average with the
actual varying from .20% to 2.03%).
  Minnesota  Mutual  MultiOption  variable   annuities  are  available   through
registered representatives of MIMLIC Sales Corporation.
 
                This is an illustration only and not a contract.
 
                                                                              35


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