MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
485BPOS, 1998-04-24
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<PAGE>

                                                           File Number 33-62147


                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C.  20549


                                    FORM N-4


             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                         PRE-EFFECTIVE AMENDMENT NUMBER 
   
                         POST-EFFECTIVE AMENDMENT NUMBER 2
    

                                     and/or

         REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940

                               AMENDMENT NUMBER ____


                   MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
    -----------------------------------------------------------------------
                           (Exact Name of Registrant)

                  The Minnesota Mutual Life Insurance Company
    -----------------------------------------------------------------------
                              (Name of Depositor)

            400 Robert Street North, St. Paul, Minnesota  55101-2098
    -----------------------------------------------------------------------
        (Address of Depositor's Principal Executive Offices) (Zip Code)
   
                                 (612) 665-3500
                       After September 1, 1998: (651) 665-3500
    -----------------------------------------------------------------------
              (Depositor's Telephone Number, Including Area Code)
    


            Dennis E. Prohofsky                           Copy to:
           Senior Vice President,                   J. Sumner Jones, Esq.
       General Counsel and Secretary                   Jones & Blouch L.L.P.
The Minnesota Mutual Life Insurance Company   1025 Thomas Jefferson Street, N.W.
          400 Robert Street North                         Suite 405
      St. Paul, Minnesota  55101-2098              Washington, D.C.  20007
  (Name and Address of Agent for Service)

   
IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (check appropriate box)
     ___ immediately upon filing pursuant to paragraph (b)
     _X_ on May 1, 1998 pursuant to paragraph (b) of Rule 485
     ___ 60 days after filing pursuant to paragraph (a)(i)
     ___ on (date), pursuant to paragraph (a)(i)
     ___ 75 days after filing pursuant to paragraph (a)(ii)
     ___ on (date) pursuant to paragraph (a)(ii) of Rule 485.
IF APPROPRIATE, CHECK THE FOLLOWING BOX:
     ___ this post-effective amendment designates a new effective date for a
          previously filed post-effective amendment.
    

   
Title of Securities being registered:  Immediate Variable Annuity Contracts
    

<PAGE>







                                     PART A

                      INFORMATION REQUIRED IN A PROSPECTUS

<PAGE>

                    Minnesota Mutual Variable Annuity Account

                       Cross Reference Sheet to Prospectus


Form N-4

Item Number    Caption in Prospectus

    1.         Cover Page

    2.         Special Terms

    3.         Questions and Answers About the Variable Annuity Contracts

    4.         Condensed Financial Information; Performance Data

    5.         General Descriptions

    6.         Contract Charges

    7.         Description of the Contracts

    8.         Description of the Contracts; Annuity Payments and Options

    9.         Description of the Contracts; Death Benefits

   10.         Description of the Contracts; Purchase Payments and Value of the
               Contract

   11.         Description of the Contracts; Redemptions

   12.         Federal Tax Status

   13.         Not Applicable

   14.         Table of Contents of the Statement of Additional Information
<PAGE>
IMMEDIATE VARIABLE ANNUITY CONTRACT
MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
("VARIABLE ANNUITY ACCOUNT"), A SEPARATE ACCOUNT OF
THE MINNESOTA MUTUAL LIF E INSURANCE COMPANY ("MINNESOTA MUTUAL")
 
   
The individual, immediate variable annuity contract offered by this
Prospectus is 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, 408A or 457 of the Internal Revenue Code. It may also be
used apart from a qualified plan.
    
 
  The owner of a contract will have contract values invested on a variable basis
in the Variable Annuity Account (the "Separate Account"). Although the Separate
Account is comprised of several sub-accounts, only one of its sub-accounts (the
"Sub-Account") is available under this contract. The Sub-Account invests only in
the Index 500 Portfolio (the "Portfolio") of Advantus Series Fund, Inc. (the
"Fund"). The value of the contract and the amount of each variable annuity
payment will vary in accordance with the performance of the Sub-Account and the
Portfolio, except to the extent limited by Minnesota Mutual's contractual
guarantee of a minimum annuity payment amount. The contract is an immediate
annuity and annuity payments must begin within 12 months after the contract is
issued. The contract provides for additional purchase payments and withdrawals
during a portion of the annuity payment period.
 
   
  This Prospectus sets forth concisely the information that a prospective
investor should know before purchasing a contract, and it should be read and
kept for future reference. A Statement of Additional Information, bearing the
same date, which contains further 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, after September 1, 1998, (651)
665-3500, or by writing Minnesota Mutual at its principal office at the
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 24.
    
 
This Prospectus is not valid unless attached to a current prospectus of Advantus
Series Fund, Inc.
 
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,
1998.
    
<PAGE>
TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                               Page
<S>                                                           <C>
Special Terms...............................................      3
 
Questions and Answers About the Variable Annuity Contract...      4
 
Expense Table...............................................      7
 
Condensed Financial Information.............................      8
 
Performance Data............................................      8
 
General Descriptions
    The Minnesota Mutual Life Insurance Company.............      9
    Separate Account........................................      9
    Advantus Series Fund, Inc...............................      9
    Additions, Deletions or Substitutions...................     10
 
Contract Charges
    Sales Charges...........................................     11
    Risk Charge.............................................     11
    Mortality and Expense Risk Charges......................     11
    Administration Charge...................................     12
 
Voting Rights...............................................     12
 
Description of the Contracts
    General Provisions......................................     12
    Annuity Payments and Options............................     14
    Death Benefits..........................................     15
    Purchase Payments and Value of the Contract.............     16
    Redemptions.............................................     17
 
Federal Tax Status..........................................     20
 
Year 2000 Computer Problem..................................     25
 
Statement of Additional Information.........................     26
 
Appendix A--Computation and Examples of Withdrawals.........     27
 
Appendix B--Immediate Variable Annuity Illustration.........     29
</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.
 
2
<PAGE>
SPECIAL TERMS
 
As used in this Prospectus, the following terms have the indicated meanings:
 
AGE: the age of a person at nearest birthday.
 
ANNUITANT: the person named on page one of the contract who may receive lifetime
benefits under the contract. Except in the event of the death of either
annuitant prior to the annuity payment commencement date, joint annuitants will
be considered a single entity.
 
ANNUITY PAYMENT COMMENCEMENT DATE: the first annuity payment date as specified
on page one of the contract.
 
ANNUITY PAYMENT DATE: each day indicated by the annuity payment commencement
date and the annuity payment frequency for an annuity payment to be determined.
This is shown on page one of the contract.
 
ANNUITY PAYMENTS: payments made at regular intervals to the annuitant or any
other payee. The annuity payments will increase or decrease in amount. The
changes will reflect the investment experience of the sub-account of the
separate account.
 
ANNUITY UNIT: the standard of value for the variable annuity payment amount.
 
BENEFICIARY: the person, persons or entity designated to receive death benefits
payable under the contract in the event of the annuitant's death.
 
CASH VALUE: the dollar amount available for withdrawal under the contract at any
time. A cash value exists only as long as both the number of cash value units
and the applicable factor from the cash value factor table shown in the contract
are greater than zero.
 
CASH VALUE PERIOD: the time during which a cash value exists under the contract.
The cash value period begins on the annuity commencement date and ends on the
cash value end date shown on page one of the contract.
 
CASH VALUE UNIT: the measure of your interest in the Separate Account that is
available for withdrawal under the contract during the cash value period.
 
CODE: the Internal Revenue Code of 1986, as amended.
 
CONTRACT DATE: the effective date of a contract.
 
FUND: Advantus Series Fund, Inc. or any mutual fund or separate investment
portfolio within a series mutual fund which is designated as an eligible
investment for the Separate Account.
 
GENERAL ACCOUNT: all of our assets other than those in the Separate Account or
in other separate accounts established by us.
 
GUARANTEED MINIMUM ANNUITY PAYMENT AMOUNT: the amount which is guaranteed as the
minimum annuity payment amount. This amount is payable regardless of the
performance of the Sub-Account. Purchase payments and cash value withdrawals
will cause this guaranteed minimum annuity payment amount to be adjusted. The
adjustment will reflect your new interest in the Separate Account.
 
JOINT OWNER: the person designated to share equally in the rights and privileges
provided to the owner of this contract. Only you and your spouse may be named as
a joint owner.
 
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 PAYMENT DATE: the date we receive a purchase payment in our home
office.
 
PURCHASE PAYMENTS: amounts paid to us as consideration for the benefits provided
by the contract.
 
SEPARATE ACCOUNT: a separate investment account entitled Minnesota Mutual
Variable Annuity Account. This separate account was established by us under
Minnesota law. The Separate Account is composed of several sub-accounts. The
assets of the Separate Account are ours. Those assets are not subject to claims
arising out of any other business which we may conduct.
 
SURRENDER VALUE: the surrender value of the contract shall be the total annuity
value as of the date of surrender plus the amounts deducted from purchase
payments. These include deductions for sales charges, risk charges and state
premium taxes where applicable.
 
TOTAL ANNUITY VALUE: the total annuity value represents your total interest in
the Separate Account.
 
VALUATION DATE: any date on which a Fund is valued.
 
VALUATION PERIOD: the period between successive valuation dates measured from
the time of one determination to the next.
 
                                                                               3
<PAGE>
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.
 
WRITTEN REQUEST: a request in writing signed by you. In the case of joint
owners, the signatures of both owners will be required to complete a written
request. In some cases, we may provide a form for your use. We may also require
that the contract be sent to us along with your written request.
 
YOU, YOUR: the owner of this contract. The owner may be the annuitant or someone
else. The owner shall be that person or entity named as owner in the
application.
 
1940 ACT: the Investment Company Act of 1940, as amended, or any similar
successor federal legislation.
 
- ------------------------------------------------------------------------
QUESTIONS AND ANSWERS ABOUT THE VARIABLE ANNUITY CONTRACT
 
WHAT IS AN ANNUITY?
An annuity is a series of payments for the life of a person or for the joint
lifetimes of the annuitant and another person and thereafter during the lifetime
of the survivor. 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 of an insurance company is called a variable annuity.
 
WHAT IS AN IMMEDIATE ANNUITY?
An immediate annuity is a contract which provides for annuity payments beginning
within a relatively short period after the issue of the contract. This type of
annuity is distinguished from a deferred annuity where contract values may be
left with an insurance company or separate account for some years prior to the
time that annuity payments begin. For the contract described in this Prospectus,
annuity payments must begin within 12 months from the day that the contract is
issued. In some states this period may be shortened so that the contract may be
considered to be an immediate annuity within that state.
 
WHAT IS THE CONTRACT OFFERED BY THIS PROSPECTUS?
The contract is an immediate, variable annuity contract which provides for
scheduled annuity payments. Annuity payments may be received on a monthly,
quarterly, semi-annual or annual basis. These payments may begin immediately and
must begin on a date within 12 months after the issue date of the contract.
Purchase payments received by us under a contract are allocated to the Separate
Account. In the Separate Account, your purchase payments are put into a
Sub-Account which invests only in the Index 500 Portfolio of the Fund.
 
IS THERE A GUARANTEED MINIMUM ANNUITY PAYMENT AMOUNT?
Yes. You will receive at least the guaranteed minimum annuity payment amount
specified in your contract. Each variable annuity payment will vary upwards or
downwards in accordance with the performance of the Sub-Account, however, unless
it would be less than the guaranteed minimum annuity payment amount. Under the
terms of the contract's guarantee provisions, at each annuity payment date, we
will pay the annuitant or annuitants the greater of: (a) the annuity payment
amount determined by multiplying the number of annuity units times the annuity
unit value; or (b) the guaranteed minimum annuity payment amount currently in
force for the contract.
  We guarantee that variable annuity payments will always be at least 85% of the
initial variable annuity payment amount. This guaranteed amount is determined on
the contract issue date and shown on page one of the contract. If an additional
purchase payment is made, we will guarantee that variable annuity payments will
always be at least 85% of the annuity amount attributable to that additional
purchase payment, plus the amount already guaranteed at the time of that
purchase payment. Withdrawals of cash value amounts under the contract will
reduce the guaranteed annuity payment amount by the same proportion that the
withdrawal reduces the number of annuity units under the contract.
 
IS THE AMOUNT OF THE CASH VALUE OF THE CONTRACT GUARANTEED?
No. The cash value of the contract decreases as annuity payments are made and it
also increases or decreases based upon the performance of the Sub-Account of the
Separate Account as reflected in the annuity unit value. We do not guarantee the
performance of any Sub-Account, nor do we guarantee the annuity unit value,
which may fall
 
4
<PAGE>
to zero. The performance of the Sub-Account will not affect the duration of the
cash value period.
 
ARE THERE LIMITATIONS ON PURCHASE PAYMENTS?
Yes. A purchase payment in an amount of at least $10,000 will be required in
order for us to issue the contract. A contract will not be issued if an initial
purchase payment is tendered which is less than that amount.
  After the contract has been issued, you may make additional purchase payments,
but only until the end cash value period of the contract. This period is shown
on page one of the contract. Additional purchase payments may be made only while
the annuitant is alive. Additional purchase payments must be in an amount of at
least $5,000. We will waive this contract limitation for amounts which are
received after the contract effective date as part of an integrated rollover or
Section 1035 transaction.
  WHEN ADDITIONAL PURCHASE PAYMENTS ARE MADE UNDER AN EXISTING IMMEDIATE
VARIABLE ANNUITY CONTRACT, THOSE PURCHASE PAYMENTS FOR TAX PURPOSES WILL NOT
RESULT IN A RECALCULATION OF THE OWNER'S INVESTMENT IN THE CONTRACT AND A
DETERMINATION OF A NEW EXCLUSION AMOUNT. THE AMOUNT OF THOSE ADDITIONAL PURCHASE
PAYMENTS WILL BE TAXABLE WHEN DISTRIBUTED, AS AN ANNUITY OR OTHERWISE.
  For more information on these matters, see the heading "Federal Tax Status,"
in this Prospectus.
  WE RESERVE THE RIGHT TO SUSPEND THE SALE OF THESE CONTRACTS AND TO TERMINATE
YOUR ABILITY TO MAKE ADDITIONAL PURCHASE PAYMENTS INTO THE CONTRACT.
  You may not make total purchase payments which exceed the amount of $1,000,000
except with our prior consent.
 
WHAT INVESTMENT OPTIONS ARE AVAILABLE FOR THE SEPARATE ACCOUNT?
Purchase payments are allocated to the Sub-Account and are invested only in
shares of the Index 500 Portfolio of the Fund. The 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 Index 500 Portfolio are made available at
net asset value to the Separate Account to fund the contracts. The Fund is also
required to redeem its shares at net asset value at our request. The investment
objectives and certain policies of the Index 500 Portfolio are as follows:
      The 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.
  There is no assurance that the Portfolio will meet its objectives. Additional
information concerning the investment objectives and policies of the Portfolio
can be found in the current prospectus for the Fund, which is attached to this
Prospectus.
 
ARE OTHER PORTFOLIOS AVAILABLE?
No. All Separate Account assets of these contracts are invested in the Index 500
Portfolio of the Fund.
 
WHAT CHARGES ARE ASSOCIATED WITH THE CONTRACTS?
Under the contract there are certain charges which are made as deductions from
purchase payments and other charges which are made directly to the assets held
in the Separate Account.
  A deduction for a sales charge and a risk charge is made from purchase
payments. The sales charge is based upon the cumulative amount of total purchase
payments made under the contracts, including any new purchase payments. In
addition, for purchases of multiple contracts made by an identical owner or
owners at different times, purchase payments made under all contracts will be
aggregated solely for the purpose of determining the sales charge applicable to
those purchase payments made to later contracts. For additional information on
multiple contracts, see the heading "Federal Tax Status," on page 20 of this
Prospectus. The charges are illustrated in the table shown below.
 
<TABLE>
<CAPTION>
                                 SALES CHARGE AS A
  CUMULATIVE TOTAL PURCHASE        PERCENTAGE OF
          PAYMENTS               PURCHASE PAYMENTS
- -----------------------------  ---------------------
<S>                            <C>
$            0 to  499,999.99         4.500%
       500,000 to  749,999.99         4.125%
      750,000 to 1,000,000.00         3.750%
</TABLE>
 
                                                                               5
<PAGE>
  The risk charge is also deducted from each purchase payment when made. This
charge is for guaranteeing the minimum annuity payment amount as shown in the
contract. The risk charge may be as much as 2% of each purchase payment.
Currently, a deduction for this charge is made at the per annum rate of 1.25% of
purchase payments made to the contract. This rate is not guaranteed for future
purchase payments made under the contract and may change based upon our
experience in guaranteeing the annuity payment levels based upon the performance
of the Index 500 Portfolio of the Fund.
  A deduction is made from the value of the Sub-Account on a daily basis for our
assumption of mortality and expense risks and for administrative charges under
the  contract.
  We deduct from the net asset value of the Separate Account an amount, computed
daily, not to exceed an annual rate of 1.40% for mortality and expense risk
guarantees. Currently, our charge for mortality and expense risk guarantees
total .80%. This total represents a charge of .55% for our assumption of
mortality risks and .25% for our assumption of expense risks. We reserve the
right to increase the charge for our assumption of mortality risks to not more
than .80% and our charge for our assumption of expense risks to not more than
 .60%. If these charges are increased to this maximum amount, then the total of
the mortality risk and expense risk charges would be 1.40% on an annual basis.
For more information on these charges, please see the heading "Contract
Charges," on page 11 of this Prospectus.
  In addition, Advantus Capital Management, Inc. ("Advantus Capital"), one of
our subsidiaries, acts as the investment adviser to the Fund 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
agreement provides that the fee shall be computed at the annual rate which may
not exceed .40% of the Index 500 Portfolio. The Fund is subject to certain
expenses that may be incurred with respect to its operation and those expenses
are allocated among the Portfolios. For more information on the Fund, see the
prospectus of the Fund which is attached to this Prospectus.
  We deduct from the net asset value of the Separate Account an amount, computed
daily, not to exceed an annual rate of .40% for administrative expenses.
Currently, our administrative charge is .15% on an annual basis. For more
information on this item, please see the heading "Contract Charges," on page 11
of this Prospectus.
  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.
 
CAN YOU SURRENDER THE CONTRACT?
Yes. At any time before annuity payments begin, you can surrender the contract
for its surrender value. The surrender value of the contract shall be its total
annuity value as of the date of surrender plus the amounts deducted from your
purchase payments for sales charges, risk charges and state premium taxes where
applicable.
 
CAN YOU MAKE WITHDRAWALS FROM THE CONTRACT?
Yes. At any time during the cash value period, you can make withdrawals of the
cash value of the contract, pursuant to your written request. Each withdrawal
must be in an amount of at least $500 or, if the cash value of the contract is
less than that amount, all of the total remaining cash value in the contract
must be withdrawn. Withdrawals are not allowed during the period before annuity
payments begin.
  A withdrawal of all or a portion of the cash value of the contract, subject to
the dollar limitations described above, may be made during the "cash value
period" of the contract. The amount of the cash value available for withdrawal
is equal to: (a) times (b) times (c), where (a) is the number of cash value
units credited to the contract, (b) is the current annuity unit value and (c) is
the appropriate cash value factor set forth in a table included in the contract.
The cash value period begins at the annuity commencement date of the contract
and runs for a period approximately equal to the annuitant's life expectancy at
the time the contract is issued. The number of cash value units and the cash
value period are shown on page one of each contract. If you make subsequent
purchase payments or withdrawals a new page one of the contract will be provided
to you.
 
6
<PAGE>
  When a withdrawal is made during the cash value period, the amount of the
annuity payment to be received by the annuitant after the withdrawal will be
recalculated and the guaranteed minimum annuity payment amount must be
redetermined as well, both of which will be adjusted downward to reflect the
withdrawal of cash values. For a description of the operation of the contract's
provisions on withdrawal and surrender see the heading "Redemptions," found on
page 17 of this Prospectus.
  WHEN WITHDRAWALS ARE TAKEN FROM THE CASH VALUE, ALL AMOUNTS RECEIVED BY THE
TAXPAYER ARE TAXABLE AS ORDINARY INCOME IN THE YEAR IN WHICH THE WITHDRAWALS ARE
TAKEN. THOSE AMOUNTS ARE TAXABLE TO THE RECIPIENT WITHOUT REGARD TO THE OWNER'S
INVESTMENT IN THE CONTRACT OR ANY INVESTMENT GAIN IN THE CONTRACT. FOR MORE
INFORMATION ON THESE MATTERS, SEE THE HEADING "FEDERAL TAX STATUS," ON PAGE 20
OF THIS PROSPECTUS. CONSULT WITH YOUR TAX ADVISER.
 
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.
 
WHAT ANNUITY OPTIONS ARE AVAILABLE?
The contracts allow for the selection of one of two variable annuity options.
One provides for lifetime variable annuity payments based on the life of a
single annuitant, the other provides for the lifetime variable annuity payments
based upon the combined lives of joint annuitants.
 
WHAT HAPPENS IF THE ANNUITANT DIES?
If the annuitant, or one of the named joint annuitants dies before annuity
payments begin, we will pay a death benefit to you or the named beneficiary.
This death benefit will be the sum of the contract's total annuity value plus
the amounts deducted from the contract's purchase payments for sales charges,
risk charges and state premium taxes, where applicable.
  If the annuitant dies after annuity payments have begun, or after the second
death in the case of joint annuitants, we will pay a death benefit which shall
be equal to the cash value, if any, of the contract as of the date of the
annuitant's death. The death benefit will be paid to the beneficiary named in
the application for the contract or as subsequently changed. In each case, the
beneficiary may elect to receive annuity payments during the remainder of the
cash value period rather than a lump sum benefit. For a description of the
calculation of the amount of those annuity payments, please see the headings
"Annuity Payments and Options" and "Death Benefits" found on pages 14 and 15 of
this Prospectus, respectively.
 
WHAT VOTING RIGHTS DO YOU HAVE?
Contract owners and annuitants will be able to direct us as to how to vote
shares of the Portfolio held for their contracts in the Sub-Account of the
Separate Account. For more information on this subject, please see the heading
entitled "Voting Rights," found on page 12 of this Prospectus.
 
- ------------------------------------------------------------------------
EXPENSE TABLE
The following contract expense information is intended to illustrate the
expenses of the individual, immediate variable annuity contract. 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.
 
INDIVIDUAL, IMMEDIATE VARIABLE ANNUITY CONTRACT
CONTRACT OWNER TRANSACTION EXPENSES
 
<TABLE>
<CAPTION>
                                                SALES CHARGE AS A
                 CUMULATIVE                       PERCENTAGE OF
           TOTAL PURCHASE PAYMENTS              PURCHASE PAYMENTS
- ---------------------------------------------  --------------------
<S>                                            <C>
$      0 to  499,999.99......................        4.500%
 500,000 to  749,999.99......................        4.125%
 750,000 to 1,000,000.00.....................        3.750%
</TABLE>
 
                                                                               7
<PAGE>
 
<TABLE>
<S>                                                 <C>
Risk Charge.......................................              1.25%
                                                               ------
    Total Contract Expenses (assuming maximum                   5.75%
      sales charge)...............................
                                                               ------
                                                               ------
    SEPARATE ACCOUNT ANNUAL EXPENSES
    (as a percentage of average account value)
    Mortality and Expense Risk Fees*..............              0.80%
    Administrative Charge*........................              0.15%
                                                               ------
        Total Separate Account Annual Expenses....              0.95%
                                                               ------
                                                               ------
ADVANTUS SERIES FUND, INC. INDEX 500 PORTFOLIO
ANNUAL EXPENSES
(as a percentage of average net assets)
    Index 500 Portfolio
    Management Fees...............................               .40%
    Other Expenses................................               .05%
                                                                -----
        Total Index 500 Portfolio Annual                         .45%
          Expenses................................
                                                                -----
                                                                -----
EXAMPLE:
</TABLE>
 
<TABLE>
<CAPTION>
                                                     1 YEAR    3 YEARS    5 YEARS    10 YEARS
                                                    --------   --------   --------   --------
<S>                                                 <C>        <C>        <C>        <C>
    Whether or not you surrender your contract at
      the end of the applicable time period:
        You would pay the following expenses on a
          $10,000 investment as of the end of the
          period indicated, assuming a 5% annual
          return on assets:.......................  $   709    $   993    $  1,297   $ 2,158
</TABLE>
 
*Under the terms of the contract, total mortality and expense risk fees may be
increased to as much as 1.40% (provided any necessary regulatory approvals are
obtained) and the administrative charge may be increased to as much as .40%.
 
These figures are based on the assumption that the contract will accumulate
value prior to the annuity payment commencement date at a 5% annual return on
assets for one, three, five and ten years, respectively. The maximum period
allowable between the issuance of a contract and the commencement of annuity
payments is one year.
  The tables shown above 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 applicable law. The examples contained in this table
should not be considered a representation of past or future expenses. Actual
expenses may be greater or less than those shown.
 
- ------------------------------------------------------------------------------
CONDENSED FINANCIAL INFORMATION
   
The financial statements of Minnesota Mutual Variable Annuity Account and the
consolidated financial statements of The Minnesota Mutual Life Insurance Company
may be found in the Statement of Additional Information. No condensed financial
information is presented as the variable annuity contract described in this
Prospectus has no accumulation units or associated information.
    
 
- ------------------------------------------------------------------------
PERFORMANCE DATA
 
   
From time to time the Variable Annuity Account may publish advertisements
containing performance data relating to the Sub-Account. Performance data will
consist of average annual total return quotations for recent one-year, five-year
and ten-year periods. Performance data may also include cumulative total return
quotations for the period since June 1, 1987 or average annual total return
quotations for periods other than as described above. Performance figures are
based on historical performance information on the assumption that the contracts
offered by this Prospectus were available for sale on June 1, 1987 and could
accumulate value prior to the commencement of annuity payments for
    
 
8
<PAGE>
periods in excess of one year. The figures are not intended to suggest that such
performance will continue in the future.
  Average annual total return figures are the average annual compounded rates of
return required for an initial investment to equal its total annuity value at
the end of the period. The total annuity value will reflect the sales and risk
charges deducted from purchase payments as well as all other contract charges.
Cumulative total return figures are the percentage changes between the value of
an initial investment and its total annuity value at the end of the period.
Cumulative total return figures will not reflect the deduction of any amounts
from purchase payments. Cumulative total return figures will always be
accompanied by average annual total return figures. More detailed information on
the computations is set forth in the Statement of Additional Information.
 
- ------------------------------------------------------------------------
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, after September 1, 1998, (651) 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.  SEPARATE 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 (the "Commission") under the Investment Company Act of 1940 (the
"1940 Act"), but such registration does not signify that the Securities and
Exchange Commission supervises the management, or the investment practices or
policies, of the Separate Account. The Separate Account meets the definition of
a "separate account" under the federal securities laws.
  The Minnesota law under which the Separate Account was established provides
that the assets of the Separate 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 Separate 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 Separate Account has one Sub-Account to which contract owners may allocate
purchase payments to the contracts described in this Prospectus. The only
Sub-Account which is available to the contract is that which invests in the
Index 500 Portfolio.
 
C.  ADVANTUS SERIES FUND, INC.
   
The Variable Annuity Account currently invests exclusively in Advantus Series
Fund, Inc. (the "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 Fund was
"MIMLIC Series Fund, Inc." The Fund is registered with the Securities and
Exchange Commission as a diversified, open-end management investment company
(except for Global Bond Portfolio which is operated as a non-diversified
open-end management company), but such registration does not signify that the
Commission supervises the management, or the investment practices or policies,
of the Fund. The Fund issues its shares, continually and without sales charge,
only to us and our separate accounts, which currently include the Variable
Annuity Account, the Group Variable Annuity Account, Variable Fund D, the
Variable Life Account and the Variable Universal Life Account. The Fund may be
made available to other separate accounts as new products are developed and may
be used as the underlying investment medium for separate accounts of the
Northstar Life Insurance Company, a wholly-owned life insurance subsidiary of
ours domiciled in the state of New York. Shares are sold and redeemed at net
asset value. In the case of a newly issued contract, purchases of shares of the
Portfolio of the 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
    
 
                                                                               9
<PAGE>
Portfolio of the Fund are made at the net asset value next determined after 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 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 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 Fund. MIMLIC Management is a wholly-owned subsidiary
of Minnesota Mutual. It acts as an investment adviser to the Fund pursuant to an
advisory agreement.
    
  The only Portfolio of the Fund which is available for investment by the
contract described in this Prospectus is the Index 500 Portfolio.
  A prospectus for the Fund is attached to this Prospectus. A person should
carefully read the Fund's prospectus before investing in the contract.
 
D.  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 Separate 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 total annuity values
and cash values, future purchase payments and future annuity payments.
  We reserve the right to transfer assets of the separate account to another
separate account. If this type of transfer is made, the term separate account,
as used in the contract, shall then mean the separate account to which the
assets were transferred.
  We may also establish additional Sub-Accounts in the Separate Account and we
reserve the right to add, combine or remove any Sub-Accounts of the Separate
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 Separate 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 Separate
Account under the Investment Company Act of 1940 (the "1940 Act"), to restrict
or eliminate any voting rights of the contract owners, and to combine the
Separate Account with one or more of our other separate accounts.
  Shares of the Portfolios of the Fund are also sold to other of our separate
accounts, which are used to receive and invest premiums paid under our 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 Fund 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
 
Under this contract, there are certain deductions for charges which are made
from purchase payments and other charges which are made directly to the Separate
Account. Deductions from purchase payments are made for sales charges, risk
charges and state premium taxes, where applicable. Deductions for the mortality
risk charge, expense risk charge and the administrative charge are all
 
10
<PAGE>
deducted on each valuation date from the Separate Account.
 
A.  SALES CHARGES
 
A sales charge is deducted from the purchase payments using the percentages
shown in the table below:
 
<TABLE>
<CAPTION>
                                 SALES CHARGE AS A
  CUMULATIVE TOTAL PURCHASE    PERCENTAGE OF PURCHASE
          PAYMENTS                    PAYMENTS
- -----------------------------  ----------------------
<S>                            <C>
$            0 to  499,999.99           4.500%
       500,000 to  749,999.99           4.125%
      750,000 to 1,000,000.00           3.750%
</TABLE>
 
  The applicable percentage from the chart will be based on the total cumulative
purchase payments to the date of payment, including the new purchase payment. In
addition, for purchases of multiple contracts made by an identical owner or
owners at different times, purchase payments made under all contracts will be
aggregated solely for the purpose of determining the sales charge applicable to
those purchase payments made to later contracts. For additional information on
multiple contracts, see the heading "Federal Tax Status," on page 20 of this
Prospectus.
 
  These sales charges may be waived in whole or in part in certain circumstances
where sales expenses are not paid at the time of sale to registered
representatives and broker-dealers responsible for the sale of the contracts or
where the contract is sold in anticipation of reduced expenses in group or
group-type situations. No elimination or reduction of the sales charge will be
permitted where that reduction or elimination would be unfairly discriminatory
to any person or class of persons.
 
B.  RISK CHARGE
 
A risk charge is also deducted from each purchase payment for our guarantee of
the minimum annuity payment amount shown on page one of the contract and
described herein under the heading "The Guaranteed Minimum Annuity Payment
Amount", on page 15 of this Prospectus. The risk charge may be as much as 2% of
each purchase payment. Currently, a deduction for this charge is made at the per
annum rate of 1.25% of purchase payments made to the contract. This rate is not
guaranteed for future purchase payments made under the contract and may change
based upon our experience in guaranteeing the annuity payment levels based upon
the performance of the Portfolio.
 
  If this deduction proves to be insufficient to cover the actual cost of the
risk assumed by us in providing a guaranteed minimum as to the amount of each
variable annuity payment made under a contract, then we will absorb the
resulting losses and make sufficient transfers to the Separate 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.
 
C.  MORTALITY AND EXPENSE RISK CHARGES
 
We assume the mortality risk under the contracts by our obligation to continue
to make scheduled 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
scheduled annuity payments received under the contract. Actual mortality results
incurred by us shall not adversely affect any payments or values under this
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 our actual expenses incurred. Actual expense results incurred by us shall
not adversely affect any payments or values under this contract.
 
  For assuming these risks, we currently make a deduction from the net asset
value of the Separate Account of an amount, computed daily, equal to an annual
rate of .80% for mortality and expense risk guarantees. This is composed of a
deduction of 0.55% for the mortality expense risk charge and 0.25% for the
expense risk charge. We reserve the right to increase the charge for the
assumption of the mortality risk to 0.80% and the assumption of expense risks to
0.60%. If these charges are increased to the maximum amount, then the total for
the mortality risk and expense risk charges would be 1.40% on an annual basis.
 
  For a discussion of how these charges are applied in the calculation of the
annuity unit value, please see the discussion entitled "Purchase Payments and
Value of the Contract" on page 16.
 
                                                                              11
<PAGE>
  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 Separate 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 sales charge.
 
D.  ADMINISTRATION CHARGE
We perform all administrative services relative to the contract. These services
include the review of applications for compliance with our issue criteria, the
preparation and issue of the contract, the receipt of purchase payments,
forwarding amounts to the Fund for investment, the calculation of the guaranteed
minimum annuity payment amount, the preparation and mailing of periodic reports
and the performance of other services.
  As consideration for providing these services, we currently make a deduction
from the Separate Account at the annual rate of 0.15%. We reserve the right to
increase this charge, based upon our experience with these contracts, to a
maximum which shall not exceed the amount of 0.40%.
 
- ------------------------------------------------------------------------
VOTING RIGHTS
 
We will vote fund shares held in the Separate Account at the regular and special
meetings of the Fund. We will vote shares attributable to contracts in
accordance with instructions received from the annuitant or annuitants or,
during the surrender period of the contract, from the owner, if different from
the annuitants. In the event no instructions are received from the person or
persons entitled to direct such a vote, we will vote shares attributable to that
contract in the same proportion as shares of the Portfolio held by the
Sub-Account for which instructions have been received. If, however, the 1940
Act, any regulation under that Act, or any interpretations of that Act or the
regulations under it, should change so that we may be allowed to vote shares in
our own right, then we may elect to do so.
  The number of votes will be determined by dividing the total annuity value for
each contract allocated to the Sub-Account by the net asset value per share of
the underlying Fund shares held by that Sub-Account. The votes attributable to
any particular contract will decrease as the reserves decrease. In determining
any voting interest, fractional shares will be recognized.
  We will notify each person entitled to vote of a Fund shareholders' meeting if
the shares held for his or her contract may be voted at that meeting. We will
also provide proxy materials and a form of instruction to facilitate provision
of voting instructions.
 
- ------------------------------------------------------------------------
DESCRIPTION OF THE CONTRACTS
 
A.  GENERAL PROVISIONS
 
1.  TYPES OF CONTRACTS OFFERED
 
    (a) Variable Annuity Contract
 
    The contract is an individual, immediate, variable annuity contract issued
    by us which provides for scheduled annuity payments on a monthly, quarterly,
    semi-annual or annual basis. These payments may begin immediately and must
    begin on a date within 12 months after the issue date of the contract.
    Purchase payments received by us under a contract are allocated to the
    Separate Account. In the Separate Account, your purchase payments are put
    into a Sub-Account which are then invested in the Portfolio.
 
    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 also be purchased by individuals not
    as a part of any qualified plan. The contract provides for a variable
    annuity which is paid on the basis of a single or joint life annuity. Once
    made, the annuity option elected may not be changed.
 
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
 
12
<PAGE>
else and the contract may be owned by two persons jointly.
 
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. Such a modification will be in writing. You will have the
right to accept or reject the modification, except in circumstances where, when
the contract is used in a tax-qualified arrangement, and the change is required
to conform the contract with tax laws or regulations.
 
4.  ASSIGNMENT
The annuitant, or the joint annuitants, can direct or assign the annuity
payments to be made under the contract so that they are paid to someone else. We
will not be bound by any assignment until we have recorded a written request 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 before it was
recorded. Any claim made by an assignee will be subject to proof of the
assignee's interest and the extent of the 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. To
the maximum extent permitted by law, benefits payable under the contract shall
be exempt from the claims of creditors.
 
5.  LIMITATIONS ON PURCHASE PAYMENTS
Purchase payments must be made at our home office. Our home office is at 400
Robert Street North, St. Paul, Minnesota 55101-2098. When we receive a purchase
payment from you at our home office, we will send you a confirmation statement
and an updated page one for the contract.
  A purchase payment in an amount of at least $10,000 will be required in order
for us to issue the contract. A contract will not be issued if an initial
purchase payment is made which is less than that amount.
  After the contract has been issued, you may make additional purchase payments,
but only during the cash value period of the contract as shown on page one.
These additional purchase payments may be made only while the annuitant is
alive. Additional purchase payments must be in an amount of at least $5,000. We
will waive this contract provision for amounts which are received after the
contract effective date as part of an integrated rollover or Section 1035
transaction. When additional purchase payments are made, those purchase payments
will not result in a recalculation of the owner's investment in the contract and
a determination of a new exclusion amount. For more information on these
matters, see the heading "Federal Tax Status," in this Prospectus. You may also
wish to consult with your tax adviser. WE RESERVE THE RIGHT TO SUSPEND THE SALE
OF THESE CONTRACTS AND TO TERMINATE YOUR ABILITY TO MAKE ADDITIONAL PURCHASE
PAYMENTS INTO THE CONTRACT.
  You may not make total purchase payments which exceed the amount of $1,000,000
except with our prior consent.
  Some states will limit these contracts to a single purchase payment and
contracts issued there are so limited.
  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 to 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 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.
 
                                                                              13
<PAGE>
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 will take the form of the purchase
of additional annuity 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 or the joint
annuitants, and (b) the investment performance of the Sub-Account. 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 on each scheduled annuity payment date. The value of
such units, and thus the amount of each scheduled annuity payment will reflect
investment gains and losses and investment income of the Portfolio. The amount
of the annuity payment may increase or decrease from one annuity payment date to
the next unless affected by the guaranteed minimum annuity payment amount.
 
2.  ELECTING THE ANNUITY COMMENCEMENT DATE
The contracts are issued as immediate annuities on the contract date. When you
purchase a contract, you must indicate the annuity commencement date which, in
any event, must be within 12 months from the contract date. Some jurisdictions
may restrict this time limit to a shorter period.
  An annuity payment may begin on any day of the month. Annuity payments may be
received on a monthly, quarterly, semi-annual or annual basis.
  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.  ANNUITY FORMS
The contracts provide for two lifetime annuity forms, a life annuity or a joint
and last survivor annuity. Each annuity payment option is available only as a
variable annuity. No additional optional annuity forms are provided or allowed
under the contracts.
 
LIFE ANNUITY
This is a scheduled annuity payable during the lifetime of the annuitant.
Annuity payments terminate with the last scheduled payment preceding the death
of the annuitant if the annuitant's death occurs after the cash value period has
expired. If the annuitant dies during the cash value period, the beneficiary
will be paid a death benefit that permits the beneficiary to elect to continue
receiving payments until the end of the cash value period or to withdraw some or
all of the cash value amount. Annuity payment amounts payable as a death benefit
will be reduced for any cash value withdrawals received by the beneficiary.
 
JOINT AND LAST SURVIVOR ANNUITY
This is a scheduled annuity payable during the joint lifetime of the annuitant
and a designated joint annuitant and continuing thereafter during the remaining
lifetime of the survivor. If the last surviving annuitant dies during the cash
value period, the beneficiary will be paid a death benefit that permits the
beneficiary to elect to continue receiving payments until the end of the cash
value period or to withdraw some or all of the cash value. Annuity payment
amounts payable as a death benefit will be reduced for any cash value
withdrawals received by the beneficiary. If this option is elected, the contract
and payments shall then be the joint property of the annuitant and the
designated joint annuitant.
  The amount of the first scheduled payment depends on the annuity form elected
and the age of the annuitant and the joint annuitant, if any.
 
4.  DETERMINATION OF AMOUNT OF VARIABLE ANNUITY PAYMENTS
Unless annuity payments are based on the guaranteed minimum annuity payment
amount, the dollar amount of each variable annuity payment is equal to the
number of annuity units credited to the contract multiplied by the annuity unit
value as of the due date of the payment. A number of annuity units is credited
at issuance of the contract based upon the initial annuity payment amount
attributable to the initial purchase payment received for the
 
14
<PAGE>
contract. The number of annuity units to be credited is determined by dividing
the initial annuity payment amount by the annuity unit value as of the contract
date. The number of annuity units remains unchanged except as adjusted for
additional purchase payments, cash value withdrawals or an annuitant's death.
For further information on the crediting of annuity units, see "Crediting
Annuity and Cash Value Units" below.
  The initial annuity payment amount is determined by applying the purchase
payment, net of deductions, to the appropriate annuity purchase rate per $1,000.
Deductions from purchase payments may include premium taxes imposed by certain
states depending upon the type of plan involved. Where applicable, these taxes
currently range from 0% to 3.5%.
  The initial annuity payment amount depends on the annuity form elected and
upon the adjusted age of the annuitant and the joint annuitant, if any. A
formula for determining the adjusted age of persons receiving contract payments
is contained in the contract. The initial annuity payment amount is also based
upon annuity payment purchase rate tables which assume an interest rate of 4.5%
per annum. The 4.5% interest rate assumed in the variable annuity determination
will produce level annuity payments if the net investment performance remains
constant at 4.5% per year. Subsequent payments will decrease, remain the same or
increase depending upon whether the actual net investment performance is less
than, equal to, or greater than 4.5%.
   
  The amount of the first annuity payment after the initial purchase payment, or
after an addition or withdrawal, may be different than the initial annuity
payment amount used to determine the number of annuity units credited at the
time of that transaction. The actual annuity payment amount on any due date is
the number of annuity units multiplied by the annuity unit value on the due date
of the payment or the guaranteed minimum annuity payment amount, if that amount
is greater. The annuity unit value recognizes the net sub-account performance
between the date of a transaction and the date the annuity payment is calculated
for payment.
    
 
5.  AMOUNT OF SECOND AND SUBSEQUENT SCHEDULED ANNUITY PAYMENTS
Unless annuity payments are based on the guaranteed minimum annuity payment
amount, the dollar amount of the second and later variable annuity payments is
equal to the number of annuity units determined for the 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 payment to payment.
 
6.  THE GUARANTEED MINIMUM ANNUITY PAYMENT AMOUNT
You will receive at least the guaranteed minimum annuity payment amount
specified in your contract. Each variable annuity payment will vary upwards or
downwards in accordance with the performance of the Sub-Account unless it would
be less than the guaranteed minimum annuity payment amount. Under the terms of
the contract's guarantee provisions, at each annuity payment date, we will pay
the annuitant or annuitants the greater of: (a) the annuity payment amount
determined by multiplying the number of annuity units times the annuity unit
value; or (b) the guaranteed minimum annuity payment amount currently in force
for the contract.
  We guarantee that variable annuity payments will always be at least 85% of the
initial variable annuity payment amount. This guaranteed amount is determined on
the contract issue date and shown on page one of the contract. If an additional
purchase payment is made, we will guarantee that variable annuity payments will
always be at least 85% of the annuity amount attributable to that additional
purchase payment, plus the amount already guaranteed at the time of that
purchase payment. Withdrawals of cash value amounts under the contract will
reduce the guaranteed annuity payment amount by the same proportion that the
withdrawal reduces the number of annuity units under the contract.
 
C.  DEATH BENEFITS
The contracts provide that in the event of the death of the annuitant or a joint
annuitant before the annuity commencement date, a death benefit will be paid to
you or, if applicable, to your beneficiary. This death benefit will be paid when
we receive due proof, satisfactory to us, of the death at our home office. This
death benefit will be the sum of the total annuity value of the contract plus
the amounts deducted from your purchase payments for sales charges, risk charges
and state premium taxes where applicable. Death proceeds will be paid in a
single sum to the beneficiary designated to receive a lump sum benefit. Payment
will be made within seven days after we receive due proof of death. Except as
noted below, the
 
                                                                              15
<PAGE>
entire interest in the contract must be distributed within five years of an
owner's death.
  The contracts provide that in the event of the death of the annuitant or the
second joint annuitant after annuity payments have begun, we will pay the cash
value of the contract, if any, as a lump sum death benefit. The beneficiary will
be the person or persons named in the application for this contract or as
subsequently changed by you. In that event, we will pay the death benefit to the
beneficiary named in your last change of beneficiary request as provided for in
the contract.
  If you are not an annuitant and you die, or if any joint owner who is not an
annuitant dies, a death benefit will be paid. This death benefit will be the
same amount as the amount that would be paid on the death of the annuitant or
joint annuitant and will be paid out in the same manner, except that if death
occurs before the annuity payment commencement date, such death benefit will be
paid out within five years of the date of death. On the payment of such a death
benefit in the event of the death of the owner, no other contract benefits are
then payable.
  You can file a written request with us to change the beneficiary. Your written
request will not be effective until it is recorded in our home office records.
After it has been recorded, it will take effect as of the date you signed the
request. However, if a death occurs before the request has been recorded, the
request will not be effective as to any death proceeds we have paid before the
request was recorded in our home office. If a beneficiary dies, that
beneficiary's interest in a contract ends with his or her death. Only those
beneficiaries who survive will be eligible to share in the amount payable to the
beneficiary at the annuitant's death. If there is no surviving beneficiary upon
the death of the annuitant, any remaining value of death benefit payable to the
beneficiary will be paid to the annuitant's estate.
  If the death benefit is payable after annuity payments have begun, the
beneficiary may elect to receive annuity payments during the remainder of the
cash value period rather than a lump sum benefit. However, the number of annuity
units will be set as a number equal to the number of cash value units as of the
date of the annuitant's death. The annuity payments to the beneficiary will
terminate at the end of the cash value period and the guaranteed minimum annuity
payment amount will be adjusted in proportion to any change in the number of
annuity units. The new guaranteed minimum annuity payment amount will be equal
to the guaranteed minimum annuity payment amount just prior to the annuitant's
death, multiplied by the number of annuity units after the annuitant's death
divided by the number of annuity units prior to the annuitant's death.
  If the beneficiary elects to continue the annuity payments, the cash value
will also continue on the beneficiary's behalf as part of the death benefit.
This allows the beneficiary to withdraw any or all of the cash value available
at any time during the remaining cash value period. As with cash value
withdrawals while the annuitant is alive, cash value withdrawals by the
beneficiary after the annuitant's death will reduce future annuity payments and
the guaranteed minimum annuity payment amount based on the reduced interest in
the Separate Account as described under the heading "Withdrawals and Surrender"
on page 17 of this Prospectus.
  Death benefits payable after the annuitant's death must be distributed at
least as rapidly as under the method elected by the annuitant or annuitants.
 
D.  PURCHASE PAYMENTS AND VALUE OF THE CONTRACT
 
1.  CREDITING ANNUITY AND CASH VALUE UNITS
Application forms are completed by the applicant and forwarded to our home
office when the contract is originally issued. 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. The initial purchase payment for the
contract must be an amount of at least $10,000.
  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 and
accepted. 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 annuity
units and cash value units. 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, except for the initial purchase payment. The
number of annuity and cash value units credited with respect to each purchase
payment is
 
16
<PAGE>
determined by dividing the initial annuity payment amount attributable to the
purchase payment by the then current annuity unit value for the Sub-Account on
the date the purchase payment is credited.
  The net amount of each purchase payment, after deductions, will be applied to
purchase an additional initial annuity payment amount at least as great as that
determined by using the guaranteed annuity payment purchase rate table for new
purchase payments included in the contract. The guaranteed annuity payment
purchase rates used for new purchase payments as shown in the contract are based
on a 4.5% assumed interest rate and Individual Annuity 1983 Table A mortality
rates projected to the terminal age of the table using projections scale G. If,
when a purchase payment is made, we are using a table of annuity payment
purchase rates for new purchase payments for this class of contract which would
result in a larger initial annuity payment, we will use that table instead.
  The number of annuity and cash value units so determined shall not be changed
by any subsequent change in the value of a unit, but the value of a unit will
vary from valuation date to valuation date to reflect the investment experience
of the Sub-Account.
  We will determine the value of annuity units on each day on which the
Portfolio of the Fund is valued.
  Cash value units will be credited for each purchase payment in a number equal
to the number of annuity units credited for each respective purchase payment.
 
2.  TOTAL ANNUITY VALUE OF THE CONTRACT
The total annuity value of the contract at any time is the present value of the
future annuity payments expected to be made under the contract. The total
annuity value represents your total interest in the Separate Account.
  When the annuitant is alive, the total annuity value is equal to the sum of
the number of cash value units, multiplied by the annuity unit value, multiplied
by the appropriate factor from the total annuity value factor table(s) included
in the contract; plus the number of annuity units in excess of the number of
cash value units, multiplied by the annuity unit value, multiplied by the
appropriate factor from the total annuity value factor table(s) included in the
contract.
  After the annuitant's death, if the beneficiary elects to continue annuity
payments for the remainder of the cash value period, the total annuity value
will be equal to the cash value at all times during the cash value period.
 
3.  VALUE OF THE ANNUITY UNIT
The value of an annuity unit for the Sub-Account is determined on each valuation
date by using the product of: (a) the value of an annuity unit on the preceding
valuation date, (b) the net investment factor for the Sub-Account for the
valuation period ending on the current valuation date, and (c) a daily factor
(.999879) which adjusts the value for the effect in the valuation period of the
4.5% annual assumed interest rate that has already been built into each
contract's total annuity value, cash value and annuity payment calculations.
 
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 the Sub-Account, the
net investment factor for a valuation period is the gross investment rate for
the valuation period, less a deduction for the mortality and expense risk
charges and the administrative charge at the current rate of 0.95% per annum.
  The gross investment rate is equal to: (1) the net asset value of a Portfolio
share 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 of a Portfolio share determined at the end of the
preceding valuation period. The gross investment rate may be positive or
negative.
 
E.  REDEMPTIONS
 
1.  WITHDRAWALS AND SURRENDER
Withdrawals are not allowed prior to the "cash value period" which commences
when annuity payments begin. At any time during the cash value period of the
contract, you may request a withdrawal from the cash value of the contract. Each
withdrawal must be in an amount of at least $500 or, if the cash value of the
contract is less than that amount, the total of any remaining cash value in the
contract must be withdrawn. Other restrictions on withdrawals may be present
when the contract is used in conjunction with tax qualified programs. See the
heading "Federal Tax Status," on page 20 in this Prospectus. You must make a
written request for any withdrawal or surrender.
  You may surrender the contract at any time before the annuity payment
commencement
 
                                                                              17
<PAGE>
date. The annuity payment commencement date is the day the first annuity payment
is made under the contract and it is the beginning of the cash value period. If
you make a surrender request, you will receive the contract's surrender value.
The surrender value will be determined on the valuation date coincident with or
next following the day your written request is received at our home office.
  Withdrawal or surrender proceeds will be paid in a single sum within seven
days of our receipt of your written request.
 
    (a) Determination of Surrender Value
 
    The surrender value of a contract is the total annuity value of the contract
    as of the date of surrender plus the amounts deducted from your purchase
    payments for sales charges, risk charges and state premium taxes where
    applicable. As this surrender value is available only until the time the
    first annuity payment is made under the contract, this provision has the
    effect of providing a return of your contract's charges, the net purchase
    payments, plus or minus investment gains or losses and less Separate Account
    charges, up until the time of that payment. As the maximum period of
    deferral is 12 months after the Contract Date, this provision offers a
    benefit which is limited in time.
 
    (b) Determination of Cash Value
 
    The cash value of the contract is not guaranteed. The cash value decreases
    as annuity payments are made, but also increases or decreases based on the
    performance of the Sub-Account of the Separate Account given by the relative
    change in the annuity unit value.
 
    A withdrawal of all or a portion of the cash value of the contract, subject
    to the dollar limitations described above, may be made during the "cash
    value period" of the contract. The amount of the cash value available for
    withdrawal is equal to: (a) times (b) times (c), where (a) is the number of
    cash value units credited to the contract, (b) is the current annuity unit
    value and (c) is the appropriate cash value factor set forth in a table in
    the contract. The cash value period begins at the annuity payment
    commencement date of the contract and runs for a period approximately equal
    to the annuitant's life expectancy at the time the contract is issued. The
    number of cash value units and the cash value period are shown on page one
    of the contract. A new page one will be provided to you if you make
    subsequent purchase payments or withdrawals. This will inform you of the
    number of cash value units remaining in your contract.
 
    The number of cash value units credited under a contract is based on
    purchase payments to, and cash withdrawals from, the contract. On the issue
    date of the contract the number of cash value units will be equal to the
    number of annuity units credited to the contract. (The crediting of annuity
    units is discussed under the heading "Crediting Annuity and Cash Value
    Units" found on page 16 in this Prospectus.) Normally, withdrawals will
    reduce both the number of cash value units and the number of annuity units
    but at different rates, so that after a withdrawal the number of cash value
    units will no longer equal the number of annuity units. For a description of
    the manner in which withdrawals affect the cash value of the contract, see
    "Effect of Withdrawals on Cash Value," below.
 
    (c) Effect of Withdrawals on Cash Value
 
    A withdrawal during the cash value period reduces the number of cash value
    units of the contract. The new number of cash value units after a withdrawal
    is equal to the number of cash value units just prior to the withdrawal,
    multiplied by the cash value prior to withdrawal, less the cash value
    withdrawn, divided by the cash value prior to withdrawal. Cash value units
    are reduced on a last in, first out basis. Therefore, if additional purchase
    payments were made to the contract after its issue, the value of the cash
    value units attributable to those payments will be valued and cashed out as
    withdrawals first, running backwards in time until the values attributable
    to the initial purchase payment are reached.
 
    (d) Annuity Payment Determinations after Withdrawals
 
    A cash value withdrawal will affect future annuity payments by reducing the
    number of annuity units, the basis for determining the amount of such
    payments. The new number of annuity units following a cash value withdrawal
    will depend on whether or
 
18
<PAGE>
    not the annuitant is alive at the time the cash value withdrawal is made. If
    the annuitant is not alive, in other words if the withdrawal is made by the
    beneficiary as part of the death benefit, the new number of annuity units
    will equal the number of cash value units following the withdrawal. At the
    death of the annuitant, the number of annuity units is adjusted, if
    necessary, to equal the then number of cash value units, and this
    equivalency is continued through any subsequent cash value withdrawals.
 
    If the annuitant is alive at the time of the withdrawal, the adjustment of
    subsequent annuity payments that occurs after a withdrawal is designed to
    produce a new level of annuity payments--assuming a rate of return exactly
    equal to 4.5%--over the remaining lifetime of the contract, including the
    period after the end of the cash value period. After such a withdrawal,
    there will be less cash value to support benefit payments during the cash
    value period, so that the same level of annuity payments as before the
    withdrawal cannot be maintained during the cash value period. In order to
    levelize payments-- again, based on the assumption of a 4.5% return--both
    before and after the end of the cash value period, it is necessary to
    "redistribute" annuity payments, reducing payments after the end of the cash
    value period and using the portion of the excess reserves attributable to
    the reduction to increase payments during the cash value period above the
    level that could be supported by the remaining cash value alone to the level
    payable after the cash value period. (As a result, even if all of a
    contract's cash value is withdrawn, annuity payments will continue to be
    made, although at a considerably reduced level.)
 
    If the annuitant is alive at the time of the withdrawal, annuity payments
    after a withdrawal are determined as follows. When a withdrawal occurs, the
    total annuity value of the contract is recomputed by adding the sum of the
    new cash value immediately after the withdrawal and the contract's excess
    reserves. The new total annuity value is then converted into a new "initial
    annuity payment amount," based on tables set forth in the contract, and the
    new initial annuity payment amount is in turn converted into annuity units
    by dividing it by the annuity unit value on the date of the withdrawal. The
    tables are actuarially computed to produce a level annuity payment for the
    remaining lifetime of the contract based on an interest rate of 4.5% and the
    mortality rates originally applied to purchase payments received under the
    contract (which cannot be less favorable than the Individual Annuity 1983
    Table A mortality rates projected to the terminal age of the table using
    projection scale G). When a cash value withdrawal is made, we will inform
    you of the new number of annuity units by sending you a new page one for
    your contract.
 
    Redistribution of annuity payments after withdrawals do not adjust
    redistributions made in connection with prior withdrawals. Despite
    redistributions, the original mortality guarantees associated with each
    purchase payment are preserved.
 
    While annuity payments will be reduced as a result of cash value
    withdrawals, so long as the annuitant is alive, annuity payments will never
    be eliminated by cash value withdrawals even if all available cash value is
    completely withdrawn. Some level of annuity benefit, under the option
    elected, will always be payable. Also, a new guaranteed annuity amount will
    always be in effect after cash withdrawals. While a new initial annuity
    payment amount is determined after a cash withdrawal, additional cash values
    are not created.
 
    A description of the computation used to determine the new initial annuity
    payment amount and examples of the computation are set forth in Appendix A
    of this Prospectus.
 
    For an example which assumes a pattern of withdrawals and the effect of such
    withdrawals on contract values, please see Appendix A to this Prospectus.
 
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 your intention to cancel. If the contract is canceled and
returned, we will refund to you the greater of (a) the total annuity value of
the contract attributable to your purchase payments, plus the amounts deducted
from your purchase payments, or
 
                                                                              19
<PAGE>
(b) the amount of purchase payments paid under this contract. Payment of the
requested refund will be made to you within seven days after we receive notice
of cancellation.
 
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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. The contract may be purchased on a non-tax qualified
basis ("Nonqualified Contract") or purchased and used in connection with certain
retirement arrangements entitled to special income tax treatment under Section
401(a), 403(b), 408, 408A or 457 of the Code ("Qualified Contracts"). The
ultimate effect of federal income taxes on the amounts held under a contract on
annuity payments, and on the economic benefit to the contract owner, the
annuitant, or the beneficiary may depend on the tax status of the individual
concerned.
    
  We are taxed as a "life insurance company" under the Internal Revenue Code.
The operations of the Separate 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 Separate Account or on capital gains arising
from the Separate Account's activities. The Separate 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, 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. There is an exception to this general rule for immediate
annuity contracts. An immediate annuity contract for these purposes is an
annuity (i) purchased with a single premium or annuity consideration, (ii) the
annuity starting date of which commences within one year from the date of the
purchase of the annuity, and (iii) which provides for a series of substantially
equal periodic payments (to be made not less frequently than annually) during
the annuity period. Corporations, trusts and other similar entities, other than
natural persons, seeking to take advantage of this exception for immediate
annuity contracts should consult with a tax adviser.
  Under current guidance, the tax consequences of additional premium payments
and partial withdrawals under nonqualified and qualified annuities are unclear,
including the effect on taxation of distributions, required distribution
provisions and penalty taxes. Consult a qualified tax adviser before submitting
additional premium payments or requesting a partial withdrawal.
  For payments made in the event of a full surrender of an annuity not part of a
qualified program, the taxable portion is generally the amount in excess of the
cost basis of the contract. Amounts withdrawn from the variable annuity
contracts are generally 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 tax qualified
retirement plan, 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 a specific dollar amount of each payment that is not taxed. In
this respect, Congress has indicated that the Treasury Department may have
authority to treat the
 
20
<PAGE>
combination purchase of an immediate annuity contract and a separate deferred
annuity contract as a single annuity contract under its general authority to
prescribe rules as may be necessary to enforce the income tax laws. A
prospective purchaser of more than one annuity contract in a calendar year
should consult a tax adviser. The taxable part of each annuity payment is taxed
at ordinary income rates.
  If a taxable distribution is made under the variable annuity contracts, an
additional tax of 10% of the amount of the taxable distribution may apply. This
additional tax does not apply where the payment is made under an immediate
annuity contract, as defined above, or 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 an owner, and in certain other circumstances.
  The Code also provides an exception to the 10% additional tax for
distributions, in periodic payments, of substantially equal installments, being
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.
  NOTICE -- PLEASE READ CAREFULLY
WE HAVE BEEN ADVISED THAT IT IS THE POSITION OF THE INTERNAL REVENUE SERVICE
THAT WHEN WITHDRAWALS (OTHER THAN ANNUITY PAYMENTS) ARE TAKEN FROM THE CASH
VALUE OF AN IMMEDIATE VARIABLE ANNUITY CONTRACT, SUCH AS THAT OFFERED BY THIS
PROSPECTUS, THEN ALL AMOUNTS RECEIVED BY THE TAXPAYER ARE TAXABLE AT ORDINARY
INCOME RATES AS AMOUNTS "NOT RECEIVED AS AN ANNUITY." IN ADDITION, SUCH AMOUNTS
ARE TAXABLE TO THE RECIPIENT WITHOUT REGARD TO THE OWNER'S INVESTMENT IN THE
CONTRACT OR ANY INVESTMENT GAIN WHICH MIGHT BE PRESENT IN THE CURRENT ANNUITY
VALUE. FOR EXAMPLE, UNDER THIS VIEW, A CONTRACT OWNER WITH A CASH VALUE OF
$100,000, SEEKING TO OBTAIN $20,000 OF THE CASH VALUE IMMEDIATELY AFTER ISSUE,
WOULD PAY INCOME TAXES ON THE ENTIRE $20,000 AMOUNT IN THAT TAX YEAR. FOR SOME
TAXPAYERS, SUCH AS THOSE UNDER AGE 59 1/2, ADDITIONAL TAX PENALTIES MAY ALSO
APPLY. THIS ADVERSE TAX RESULT MEANS THAT OWNERS OF NONQUALIFIED CONTRACTS
SHOULD CONSIDER CAREFULLY THE TAX IMPLICATIONS OF ANY WITHDRAWAL REQUESTS AND
THEIR NEED FOR CONTRACT FUNDS PRIOR TO THE EXERCISE OF THIS RIGHT. CONTRACT
OWNERS SHOULD ALSO CONTACT THEIR TAX ADVISER PRIOR TO MAKING WITHDRAWALS.
  IN ADDITION, WE HAVE BEEN ADVISED THAT IT IS THE POSITION OF THE INTERNAL
REVENUE SERVICE THAT WHEN ADDITIONAL PURCHASE PAYMENTS ARE MADE UNDER AN
EXISTING IMMEDIATE VARIABLE ANNUITY CONTRACT, SUCH AS THAT OFFERED BY THIS
PROSPECTUS, THOSE PURCHASE PAYMENTS WILL NOT RESULT IN A RECALCULATION OF THE
OWNER'S INVESTMENT IN THE CONTRACT AND A DETERMINATION OF A NEW EXCLUSION
AMOUNT. FOR EXAMPLE, A CONTRACT OWNER AGED 60 MIGHT PURCHASE A CONTRACT FOR THE
SUM OF $100,000, WHICH WOULD RESULT IN AN INITIAL LIFETIME ANNUITY PAYMENT OF
$460.00 PER MONTH. EACH YEAR, $4,132.23 WOULD BE RECEIVED AS A RETURN OF
INVESTMENT IN THE CONTRACT AND THE EXCESS WOULD BE TAXED AS ORDINARY INCOME. IF
WE ASSUME THAT THE CONTRACT OWNER MAKES AN ADDITIONAL PURCHASE PAYMENT OF
$20,000, THE EXCLUSION AMOUNT OF $4,123.23 WOULD NOT CHANGE, EVEN THOUGH
ADDITIONAL CASH VALUE WILL RESULT IN A NEW VARIABLE ANNUITY PAYMENT. THIS
POSITION OF THE SERVICE WILL RESULT IN THE OWNER'S INABILITY TO RECOVER HIS OR
HER INVESTMENT OVER THE PERIOD OF THE PAYMENTS. ACCORDINGLY, CONTRACT OWNERS,
ESPECIALLY THOSE INTENDING TO MAKE SUBSTANTIAL AND MATERIAL ADDITIONAL PAYMENTS,
SHOULD CONSIDER PURCHASING AN ADDITIONAL CONTRACT INSTEAD OF MAKING AN
ADDITIONAL PAYMENT. FOR FURTHER INFORMATION YOU SHOULD CONSULT YOUR OWN
QUALIFIED 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 Separate Account to be
"adequately diversified" in order for the contract to be treated as a life
insurance contract for federal tax purposes. The Separate Account, through the
Fund, intends to comply
 
                                                                              21
<PAGE>
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 the Portfolio of the Fund in which the Separate 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 investments to particular sub-accounts 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.
These differences could result in a contract owner being treated as the owner of
the assets of the Separate 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 Separate 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 an 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. For these purposes, the investment in the contract is not
affected by the owner's death. That is, the
 
22
<PAGE>
investment in the contract remains the amount of any purchase payments paid
which were not excluded from gross income.
 
   
POSSIBLE CHANGES IN TAXATION
    
   
Legislation has been proposed in 1998 that, if enacted, would adversely modify
the federal taxation of certain insurance and annuity contracts. For example,
one proposal would tax transfers among investment options and tax exchanges
involving variable contracts. A second proposal would reduce the "investment in
the contract" under cash value life insurance and certain annuity contracts by
certain amounts, thereby increasing the amount of income for purposes of
computing gain. Although the likelihood of there being any change is uncertain,
there is always the possibility that the tax treatment of the contracts could
change by legislation or other means. Moreover, it is also possible that any
change could be retroactive (that is, effective prior to the date of the
change). You should consult a tax adviser with respect to legislative
developments and their effect on the contract.
    
 
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; 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. Some retirement plans are
subject to distribution and other requirements that are not incorporated in the
annuity. 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 distribution and other requirements that are not
incorporated into 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. For qualified plans under Section 401(a), 403(b) and 457, the Code
requires that distributions generally must commence no later than the later of
April 1 of the calendar year following the calendar year in which the owner (or
plan participant) (i) reaches age 70 1/2 or (ii) retires, and must be made in a
specified form or manner. If the plan participant is a "5 percent owner" (as
defined in the Code), distributions generally must begin no later than April 1
of the calendar year following the calendar year in which the owner (or plan
participant) reaches age 70 1/2. For IRAs described in Section 408,
distributions generally must commence no later than April 1 of the calendar year
following the calendar year in which the owner (or plan participant) reaches age
70 1/2. Roth IRAs under Section 408A do not require distributions at any time
prior to the owner's death.
    
 
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
   
Section 408 of the Code permits eligible individuals to contribute to an
Individual Retirement Annuity, hereinafter referred to as an "IRA". Also,
distributions from certain other types of qualified plans may be "rolled over"
on a tax-deferred basis into an IRA. The sale of a
    
 
                                                                              23
<PAGE>
   
contract for use with an IRA may be subject to special disclosure requirements
of the Internal Revenue Service. Purchasers of a contract for use with IRAs will
be provided with supplemental information required by the Internal Revenue
Service or other appropriate agency. Such purchasers will have the right to
revoke their purchase within 7 days of the earlier of the establishment of the
IRA or their purchase. A Qualified Contract issued in connection with an IRA
will be amended as necessary to conform to the requirements of the Code.
Purchasers should seek competent advice as to the suitability of the contract
for use with IRAs.
    
   
  Earnings in an IRA are not taxed until distribution. IRA contributions are
limited each year to the lesser of $2,000 or 100% of the owner's adjusted gross
income and may be deductible in whole or in part depending on the individual's
income. The limit on the amount contributed to an IRA does not apply to
distributions from certain other types of qualified plans that are "rolled over"
on a tax-deferred basis into an IRA. Amounts in the IRA (other than
nondeductible contributions) are taxed when distributed from the IRA.
Distributions prior to age 59 1/2 (unless certain exceptions apply) are subject
to a 10% penalty tax.
    
 
   
SIMPLIFIED EMPLOYEE PENSION (SEP) IRAS
    
   
Employers may establish Simplified Employee Pension (SEP) IRAs under Code
Section 408(k) to provide IRA contributions on behalf of their employees. In
addition to all of the general Code rules governing IRAs, such plans are subject
to certain Code requirements regarding participation and amounts of
contributions.
    
 
   
SIMPLE IRAS
    
   
Beginning January 1, 1997, certain small employers may establish Simple IRAs 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
IRA 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.
    
 
   
ROTH IRAS
    
   
Effective January 1, 1998, Section 408A of the Code permits certain eligible
individuals to contribute to a Roth IRA. Contributions to a Roth IRA, which are
subject to certain limitations, are not deductible and must be made in cash or
as a rollover or transfer from another Roth IRA or other IRA. A rollover from or
conversion of an IRA to a Roth IRA may be subject to tax and other special rules
may apply. You should consult a tax adviser before combining any converted
amounts with any other Roth IRA contributions, including any other conversion
amounts from other tax years. Distributions from a Roth IRA generally are not
taxed, except that, once aggregate distributions exceed contributions to the
Roth IRA, income tax and a 10% penalty tax may apply to distributions made (1)
before age 59 1/2 (subject to certain exceptions) or (2) during the five taxable
years starting with the year in which the first contribution is made to the Roth
IRA.
    
 
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 plans, all 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
 
24
<PAGE>
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.
 
   
- ------------------------------------------------------------------------
    
YEAR 2000 COMPUTER PROBLEM
 
   
The services provided by Minnesota Mutual to the Separate Account and its
contract owners depend on the smooth functioning of its computer systems. Many
computer software systems in use today cannot distinguish the year 2000 from the
year 1900 because of the way that dates are encoded, stored and calculated. That
failure could have a negative impact on the ability of Minnesota Mutual to
provide services to contract owners. Minnesota Mutual has been actively working
on necessary changes to its computer systems to deal with the year 2000.
Although there can be no assurance of complete success, Minnesota Mutual
believes that it will be able to resolve these issues on a timely basis and that
there will be no material adverse impact on its ability to provide services to
the Separate Account.
    
   
  In addition, Minnesota Mutual's operations could be impacted by its service
providers' or suppliers' year 2000 efforts. Minnesota Mutual has undertaken an
initiative to assess the efforts of organizations where there is a significant
business relationship; however there is no assurance that Minnesota Mutual will
not be affected by year 2000 problems of other organizations.
    
 
                                                                              25
<PAGE>
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
 
26
<PAGE>
APPENDIX A--COMPUTATION AND EXAMPLES OF WITHDRAWALS
 
A cash value withdrawal will affect future annuity payments by reducing the
number of annuity units, the basis for determining the amount of such payments.
If the annuitant is alive at the time of the withdrawal, the new number of
annuity units is determined by first computing a new initial annuity payment
amount and then dividing that amount by the annuity unit value at the time of
the withdrawal.
 
IF NO PRIOR WITHDRAWALS
If no prior cash withdrawals have been made, the new initial annuity payment
amount is the sum of
 
     (i) the product of the number of cash value units after the withdrawal
         times the current annuity unit value, and
 
    (ii) the product of ([(a) X (b)]/1000) times (c), where
 
        (a) is the excess of the total annuity value over the cash value
            immediately prior to the withdrawal,
 
        (b) is the ratio of the cash value withdrawn over the cash value prior
            to the withdrawal, and
 
        (c) is the applicable annuity purchase rate set forth in the contract in
            the table captioned "Total Annuity Value Factors and Annuity Payment
            Purchase Rates Applicable at a Cash Value Withdrawal while the
            Annuitant is Alive" ("Table I").
  In the above computation "(i)" reflects the portion of the new initial annuity
payment amount supported by the reserves attributable to the cash value of the
contract, and "(ii)" reflects the portion of the new initial annuity payment
amount supported by the annuity reserves in excess of the cash value. The excess
reserves, "(ii) (a)," are multiplied by the proportionate reduction in the cash
value, "(ii) (b)," to determine the portion of the excess reserves that are to
be redistributed, and the redistribution is effected by dividing the portion so
determined by 1000 and multiplying the result by the appropriate annuity
purchase rate.
   
  An example of the withdrawal calculation may serve as a useful illustration.
Assume a contract issued to a woman in 1995, age 60, for an initial purchase
payment of $100,000, and assume further that the net Sub-Account performance
matches the assumed interest rate of 4.5% so that we need not consider the
variation in annuity payments as a result of fluctuations in investment
performance. Assume also that the annuity unit value is and remains $1.00. At
the time of issue of the contract, the initial annuity payment amount, if paid
as a life annuity, will be $460.99, and the number of annuity units and cash
value units will be 460.9900. The guaranteed minimum annuity payment amount is
$391.84 (85% X $460.99).
    
  Assume that at year five, the contract owner makes a withdrawal of 60% of the
cash value. Immediately prior to the withdrawal, the contract has a total
annuity value of $85,594, which is determined by multiplying the current annuity
payment amount, $460.99, by the appropriate factor set forth in the contract
applicable to cash value units in Table I, 185.6737. The total annuity reserves
amount is $85,594. The cash value of the contract immediately prior to the
withdrawal is $70,890, which is determined by multiplying the current annuity
payment amount, $460.99, by the appropriate factor set forth in the contract in
the table captioned "Cash Value Factors." ("Table II"), 153.7783. $70,890 is the
amount of the annuity reserves attributable to the cash value of the contract.
The cash value after the withdrawal is $28,356 ($70,890 - $42,534 (60% X
$70,890)), and the new number of cash value units is 184.3960 (460.9900 X
($28,356/$70,890)).
  The new initial annuity payment amount is $235.19, the sum of
 
     (i) $184.40, the product of the number of cash value units after the
         withdrawal (184.3960) times the annuity unit value ($1.00), and
 
    (ii) $50.79, the product of ([(a) X (b)]/1000) times (c), where
 
        (a) is $14,704, the excess of the total annuity value ($85,594) over the
            cash value ($70,890) immediately prior to the withdrawal,
 
        (b) is .6, the ratio of the cash value withdrawn ($42,534) over the cash
            value prior to the withdrawal ($70,890), and
 
        (c) is 5.7568, the applicable annuity purchase rate set forth in the
            contract in Table I.
  The new guaranteed minimum annuity payment amount after the withdrawal is
$199.91 ($391.84 X (235.1900/460.9900)).
 
                                                                              27
<PAGE>
IF PRIOR WITHDRAWALS
Where prior withdrawals have been made, the above formula is adjusted in the
manner shown in the following example. Assume that after the withdrawal of 60%
of the cash value in the contract described above the owner withdraws 75% of the
remaining cash value at year 15.
  Immediately prior to the transaction the contract has a total annuity value of
$32,003. This is determined by multiplying the two components of the current
annuity payment amount $184.40 -- the portion attributable to the cash value
reserves, and $50.79 -- the portion attributable to the annuity reserves in
excess of the cash value, by the appropriate factors set forth in the contract
applicable to cash value units and annuity units in excess of cash value units,
respectively, in Table I, namely, 137.7353 and 130.0297 ($32,003 = ($184.40 X
137.7353) + ($50.79 X 130.0297)). The cash value of the contract immediately
prior to the withdrawal is $16,289, which is determined by multiplying the
portion of the current annuity payment amount attributable to the cash value,
$184.40, by the appropriate factor set forth in the contract in Table II,
88.3373 ($16,289 = $184.40 X 88.3373). The cash value after the withdrawal is
$4,072 ($16,289 - $12,217 (75% X $16,289)), and the new number of cash value
units is 46.0962 (184.3960 X ($4,072/$16,289)).
  The new initial annuity payment amount is $149.44, the sum of
 
     (i) $46.10, the product of the number of cash value units after the
         withdrawal (46.0962) times the current annuity unit value ($1.00),
 
    (ii) $50.79, the product of the number of annuity units (235.19) minus the
         number of cash value units (184.40), each prior to the withdrawal,
         times the current annuity unit value ($1.00), and
 
    (iii) $52.55, the product of ([(a) X (b)]/1000) times (c), where
 
        (a) is $9110, which is
 
            (A) $15,714, the excess of the total annuity value ($32,003) over
                the cash value ($16,289) immediately prior to the withdrawal,
                minus
 
            (B) $6,604, the value is (ii) above ($50.79) multiplied by the
                appropriate factor as of the withdrawal date applicable to
                annuity units in excess of cash value units set forth in the
                contract in Table I (130.0297),
 
        (b) is .75, the ratio of the cash value withdrawn ($12,217) over the
            cash value prior to the withdrawal ($16,289), and
 
        (c) is 7.6905, the applicable annuity purchase rate set forth in the
            contract in Table I.
  The new initial annuity payment amount has a new guaranteed minimum annuity
payment amount associated with it of $127.02 ($199.91 X 149.4400/235.1900).
 
28
<PAGE>
   
APPENDIX B-- ADJUSTABLE INCOME ANNUITY DISCLOSURE
    
"A VARIABLE IMMEDIATE ANNUITY"
 
   
PREPARED FOR: Jane M. Doe
    
 
   
DATE OF BIRTH: 10/01/1935   SEX: Female
    
 
   
STATE: MN
    
 
   
PURCHASE PAYMENT: $100,000.00
    
 
   
FUNDS: Non-Qualified
    
 
   
LIFE EXPECTANCY: 24.2 (IRS)
    
 
   
PREPARED BY: Minnesota Mutual
    
 
   
QUOTATION DATE: 10/01/1995
    
 
   
ANNUITIZATION OPTION: Single Life
    
 
   
COMMENCEMENT DATE: 10/01/1995
    
 
   
INCOME FREQUENCY: Monthly
    
 
   
INITIAL PERIODIC INCOME: $460.99
    
 
   
GUARANTEED MINIMUM INCOME AT ISSUE: $391.84
    
 
   
ESTIMATED ANNUAL EXCLUSION AMOUNT AT ISSUE: $3,471.07
    
 
   
AGE    Your age at nearest birthday.
    
 
   
GUARANTEED INCOME    The guaranteed income column represents the minimum annuity
payment you will receive. This amount will be adjusted for additional purchase
payments made to the contract or cash value withdrawals taken from the contract.
    
 
   
PROJECTED INCOME    The variable annuity income amount shown assumes a constant
annual investment return. 4.5% is the assumed interest rate used to calculate
the first payment. Thereafter, payments will increase or decrease based upon the
relationship between the 4.5% interest rate and the net investment performance
of the Index 500* Portfolio of the Advantus Series Fund, Inc. Actual value of
the contract will fluctuate depending on the performance of the underlying
sub-account.
    
 
   
CUMULATIVE INCOME    The cumulative income amount shown represents the sum of
the projected income payments on an annual basis.
    
 
   
TOTAL ANNUITY VALUE    The total annuity value at issue is the net amount
credited to your account after deduction of all front end charges. Thereafter,
the total annuity value changes based on fund performance, annuity payments
made, and subsequent purchase payments or withdrawals. The total annuity value
includes the cash value plus an amount intended to fund annuity payments for the
remainder of your life after the cash value period has ended.
    
 
   
CASH VALUE    The cash value is the dollar amount available for withdrawal under
this contract at a given point in time. Access to the cash value is available
during the cash value period--a time period from the first annuity payment date
to your life expectancy as determined at issue. It is important to note that
withdrawals of cash value will reduce the amount of the minimum guaranteed
payment.
    
 
   
ESTIMATED ANNUAL EXCLUSION AMOUNT AT ISSUE    The annual variable exclusion
amount is based on a cost basis of $100,000 and represents the amount of
variable payments that are excluded from taxation in each calendar year. This
annual amount is prorated in the first calendar year and may be recalculated in
any year where the total value of the annuity payments is less than the
exclusion amount. Exclusion calculations apply only until the cost basis is
returned, thereafter, all payments are fully taxable. This calculation does not
include future contributions or withdrawals.
    
 
   
SPECIAL TAX RULES APPLY TO NON-QUALIFIED PLANS    When withdrawals are taken
from the cash value of the Adjustable Income Annuity contract, all amounts
received by the taxpayer are taxable as ordinary income in the year in which the
withdrawals are taken. Under certain circumstances, you may be able to get an
offsetting deduction. When additional purchase payments are made under an
existing Adjustable Income Annuity contract, those purchase payments will not
result in a recalculation of the owner's investment in the contract and a
 
determination of a new exclusion amount.
    
 
   
                                  Page 1 of 5
    
   
                          Not valid without all pages.
    
 
   
 The investment returns shown are hypothetical and are not a representation of
                                future results.
    
   
                This is an illustration only and not a contract.
            Prepared by The Minnesota Mutual Life Insurance Company
    
 
                                                                              29
<PAGE>
   
OTHER    Deductions from your purchase payments are made for sales charges, risk
charges and state premium taxes where applicable. Sales charges are based on
your total cumulative purchase payments (see prospectus for schedule). A risk
charge is deducted for Minnesota Mutual's guarantee of a minimum annuity payment
amount. This charge is 1.25% of each purchase payment.
    
   
  Net rates of return reflect expenses totaling 1.40%, which consist of the .95%
Variable Annuity Account mortality and expense risk charge and administrative
charge, and .45% for the Series Fund management fee and other expenses.
    
   
  Minnesota Mutual variable immediate annuities are available through registered
representatives of Ascend Financial Services, Inc., Securities Dealer, Member
NASD/ SIPC. This illustration must be accompanied or preceded by a current
prospectus for the Minnesota Mutual Variable Annuity Account and for the
Advantus Series Fund, Inc.
    
   
  * "Standard & Poor's-Registered Trademark-", "S&P-Registered Trademark-", "S&P
500-Registered Trademark-", "Standard & Poor's 500", and "500" are trademarks of
The McGraw-Hill Companies, Inc. and have been licensed for use by Advantus
Series Fund, Inc. The Fund is not sponsored, endorsed, sold or promoted by
Standard & Poor's and Standard & Poor's makes no representation regarding the
 
advisability of investing in the Fund."
    
 
   
                                  Page 2 of 5
    
   
                          Not valid without all pages.
    
 
   
 The investment returns shown are hypothetical and are not a representation of
                                future results.
    
   
                This is an illustration only and not a contract.
            Prepared by The Minnesota Mutual Life Insurance Company
    
 
30
<PAGE>
   
ADJUSTABLE INCOME ANNUITY ILLUSTRATION
    
"A VARIABLE IMMEDIATE ANNUITY"
 
   
PREPARED FOR: Jane M. Doe
    
 
   
DATE OF BIRTH: 10/01/1935   SEX: Female
    
 
   
STATE: MN
    
 
   
PURCHASE PAYMENT: $100,000.00
    
 
   
FUNDS: Non-Qualified
    
 
   
LIFE EXPECTANCY: 24.2 (IRS)
    
 
   
PREPARED BY: Minnesota Mutual
    
 
   
QUOTATION DATE: 10/01/1995
    
   
ANNUITIZATION OPTION: Single Life
    
 
   
COMMENCEMENT DATE: 10/01/1995
    
 
   
INCOME FREQUENCY: Monthly
    
 
   
INITIAL PERIODIC INCOME: $460.99
    
 
   
GUARANTEED MINIMUM INCOME AT ISSUE: $391.84
    
 
   
*ESTIMATED ANNUAL EXCLUSION AMOUNT AT ISSUE: $3,471.07
    
 
   
<TABLE>
<CAPTION>
                                               0.00% GROSS RATE OF RETURN (-1.40% NET)
                                   ---------------------------------------------------------------
                 BEGINNING         GUARANTEED   PROJECTED   CUMULATIVE  TOTAL ANNUITY
DATE              OF YEAR     AGE    INCOME      INCOME      INCOME         VALUE       CASH VALUE
- ---------------  ----------   ---  ----------   ---------   ---------   -------------   ----------
<S>              <C>          <C>  <C>          <C>         <C>         <C>             <C>
Oct 1, 1995....       1        60     $392         $461        $461        $93,789        $81,667
Oct 1, 1996....       2        61     392          435       5,822         87,076         75,197
Oct 1, 1997....       3        62     392          410      10,881         80,764         69,119
Oct 1, 1998....       4        63     392          392      15,662         74,829         63,409
Oct 1, 1999....       5        64     392          392      20,364         69,250         58,048
Oct 1, 2000....       6        65     392          392      25,066         64,009         53,013
Oct 1, 2001....       7        66     392          392      29,768         59,087         48,288
Oct 1, 2002....       8        67     392          392      34,470         54,465         43,854
Oct 1, 2003....       9        68     392          392      39,172         50,128         39,694
Oct 1, 2004....      10        69     392          392      43,874         46,059         35,792
Oct 1, 2005....      11        70     392          392      48,576         42,244         32,134
Oct 1, 2006....      12        71     392          392      53,278         38,670         28,705
Oct 1, 2007....      13        72     392          392      57,980         35,325         25,493
Oct 1, 2008....      14        73     392          392      62,682         32,197         22,484
Oct 1, 2009....      15        74     392          392      67,384         29,277         19,667
Oct 1, 2010....      16        75     392          392      72,086         26,555         17,031
Oct 1, 2011....      17        76     392          392      76,788         24,027         14,565
Oct 1, 2012....      18        77     392          392      81,490         21,682         12,259
Oct 1, 2013....      19        78     392          392      86,193         19,513         10,104
Oct 1, 2014....      20        79     392          392      90,895         17,514          8,092
Oct 1, 2015....      21        80     392          392      95,597         15,682          6,213
Oct 1, 2016....      22        81     392          392      100,299        14,013          4,460
Oct 1, 2017....      23        82     392          392      105,001        12,505          2,826
Oct 1, 2018....      24        83     392          392      109,703        11,160          1,303
Oct 1, 2019....      25        84     392          392      114,405         9,980              0
Oct 1, 2020....      26        85     392          392      119,107         8,932              0
Oct 1, 2021....      27        86     392          392      123,809         7,983              0
Oct 1, 2022....      28        87     392          392      128,511         7,124              0
Oct 1, 2023....      29        88     392          392      133,213         6,350              0
Oct 1, 2024....      30        89     392          392      137,915         5,654              0
Oct 1, 2025....      31        90     392          392      142,617         5,030              0
Oct 1, 2026....      32        91     392          392      147,319         4,485              0
Oct 1, 2027....      33        92     392          392      152,021         3,999              0
Oct 1, 2028....      34        93     392          392      156,723         3,563              0
Oct 1, 2029....      35        94     392          392      161,425         3,173              0
Oct 1, 2030....      36        95     392          392      166,128         2,821              0
</TABLE>
    
 
   
*   The exclusion amount does not assume future contributions or withdrawals.
    
 
   
                                  Page 3 of 5
    
   
                          Not valid without all pages.
    
 
   
 The investment returns shown are hypothetical and are not a representation of
                                future results.
                This is an illustration only and not a contract.
            Prepared by The Minnesota Mutual Life Insurance Company
    
 
                                                                              31
<PAGE>
   
- ------------------------------------------------------------------------
    
ADJUSTABLE INCOME ANNUITY ILLUSTRATION
"A VARIABLE IMMEDIATE ANNUITY"
 
   
PREPARED FOR: Jane M. Doe
    
 
   
DATE OF BIRTH: 10/01/1935   SEX: Female
    
 
   
STATE: MN
    
 
   
PURCHASE PAYMENT: $100,000.00
    
 
   
FUNDS: Non-Qualified
    
 
   
LIFE EXPECTANCY: 24.2 (IRS)
    
 
   
PREPARED BY: Minnesota Mutual
    
 
   
QUOTATION DATE: 10/01/1995
    
 
   
ANNUITIZATION OPTION: Single Life
    
 
   
COMMENCEMENT DATE: 10/01/1995
    
   
INCOME FREQUENCY: Monthly
    
 
   
INITIAL PERIODIC INCOME: $460.99
    
 
   
GUARANTEED MINIMUM INCOME AT ISSUE: $391.84
    
 
   
* ESTIMATED ANNUAL EXCLUSION AMOUNT AT ISSUE: $3,471.07
    
 
   
<TABLE>
<CAPTION>
                                               5.90% GROSS RATE OF RETURN (4.50% NET)
                                   ---------------------------------------------------------------
                 BEGINNING         GUARANTEED   PROJECTED   CUMULATIVE  TOTAL ANNUITY
     DATE         OF YEAR     AGE    INCOME      INCOME      INCOME         VALUE       CASH VALUE
- ---------------  ----------   ---  ----------   ---------   ---------   -------------   ----------
<S>              <C>          <C>  <C>          <C>         <C>         <C>             <C>
Oct 1, 1995....        1       60     $392         $461        $461        $93,789        $81,667
Oct 1, 1996....        2       61     392          461       5,993         92,286         79,697
Oct 1, 1997....        3       62     392          461      11,525         90,718         77,638
Oct 1, 1998....        4       63     392          461      17,057         89,081         75,487
Oct 1, 1999....        5       64     392          461      22,589         87,373         73,239
Oct 1, 2000....        6       65     392          461      28,120         85,593         70,890
Oct 1, 2001....        7       66     392          461      33,652         83,738         68,435
Oct 1, 2002....        8       67     392          461      39,184         81,807         65,869
Oct 1, 2003....        9       68     392          461      44,716         79,798         63,188
Oct 1, 2004....       10       69     392          461      50,248         77,708         60,387
Oct 1, 2005....       11       70     392          461      55,780         75,537         57,459
Oct 1, 2006....       12       71     392          461      61,312         73,284         54,400
Oct 1, 2007....       13       72     392          461      66,844         70,950         51,203
Oct 1, 2008....       14       73     392          461      72,375         68,538         47,862
Oct 1, 2009....       15       74     392          461      77,907         66,050         44,371
Oct 1, 2010....       16       75     392          461      83,439         63,494         40,722
Oct 1, 2011....       17       76     392          461      88,971         60,888         36,910
Oct 1, 2012....       18       77     392          461      94,503         58,233         32,926
Oct 1, 2013....       19       78     392          461      100,035        55,544         28,762
Oct 1, 2014....       20       79     392          461      105,567        52,838         24,412
Oct 1, 2015....       21       80     392          461      111,099        50,141         19,865
Oct 1, 2016....       22       81     392          461      116,630        47,485         15,114
Oct 1, 2017....       23       82     392          461      122,162        44,912         10,149
Oct 1, 2018....       24       83     392          461      127,694        42,480          4,961
Oct 1, 2019....       25       84     392          461      133,226        40,261              0
Oct 1, 2020....       26       85     392          461      138,758        38,191              0
Oct 1, 2021....       27       86     392          461      144,290        36,172              0
Oct 1, 2022....       28       87     392          461      149,822        34,211              0
Oct 1, 2023....       29       88     392          461      155,354        32,318              0
Oct 1, 2024....       30       89     392          461      160,886        30,498              0
Oct 1, 2025....       31       90     392          461      166,417        28,755              0
Oct 1, 2026....       32       91     392          461      171,949        27,176              0
Oct 1, 2027....       33       92     392          461      177,481        25,678              0
Oct 1, 2028....       34       93     392          461      183,013        24,253              0
Oct 1, 2029....       35       94     392          461      188,545        22,888              0
Oct 1, 2030....       36       95     392          461      194,077        21,569              0
</TABLE>
    
 
   
*   The exclusion amount does not assume future contributions or withdrawals.
    
 
   
                                  Page 4 of 5
    
   
                          Not valid without all pages.
    
 
   
 The investment returns shown are hypothetical and are not a representation of
                                future results.
                This is an illustration only and not a contract.
            Prepared by The Minnesota Mutual Life Insurance Company
    
 
32
<PAGE>
   
ADJUSTABLE INCOME ANNUITY ILLUSTRATION
    
"A VARIABLE IMMEDIATE ANNUITY"
 
   
PREPARED FOR: Jane M. Doe
    
 
   
DATE OF BIRTH: 10/01/1935   SEX: Female
    
 
   
STATE: MN
    
 
   
PURCHASE PAYMENT: $100,000.00
    
 
   
FUNDS: Non-Qualified
    
 
   
LIFE EXPECTANCY: 24.2 (IRS)
    
 
   
PREPARED BY: Minnesota Mutual
    
 
   
QUOTATION DATE: 10/01/1995
    
 
   
ANNUITIZATION OPTION: Single Life
    
 
   
COMMENCEMENT DATE: 10/01/1995
    
   
INCOME FREQUENCY: Monthly
    
 
   
INITIAL PERIODIC INCOME: $460.99
    
 
   
GUARANTEED MINIMUM INCOME AT ISSUE: $391.84
    
 
   
*ESTIMATED ANNUAL EXCLUSION AMOUNT AT ISSUE: $3,471.07
    
 
   
<TABLE>
<CAPTION>
                                              12.00% GROSS RATE OF RETURN (10.60% NET)
                                   ---------------------------------------------------------------
                 BEGINNING         GUARANTEED   PROJECTED   CUMULATIVE  TOTAL ANNUITY
DATE              OF YEAR     AGE    INCOME      INCOME      INCOME         VALUE       CASH VALUE
- ---------------  ----------   ---  ----------   ---------   ---------   -------------   ----------
<S>              <C>          <C>  <C>          <C>         <C>         <C>             <C>
Oct 1, 1995....        1       60     $392         $461        $461        $93,789        $81,667
Oct 1, 1996....        2       61     392          488       6,166         97,673         84,349
Oct 1, 1997....        3       62     392          516      12,204        101,618         86,967
Oct 1, 1998....        4       63     392          547      18,595        105,609         89,493
Oct 1, 1999....        5       64     392          578      25,359        109,631         91,896
Oct 1, 2000....        6       65     392          612      32,517        113,666         94,141
Oct 1, 2001....        7       66     392          648      40,094        117,695         96,185
Oct 1, 2002....        8       67     392          686      48,113        121,692         97,984
Oct 1, 2003....        9       68     392          726      56,599        125,632         99,483
Oct 1, 2004....       10       69     392          768      65,582        129,484        100,622
Oct 1, 2005....       11       70     392          813      75,088        133,214        101,332
Oct 1, 2006....       12       71     392          860      85,150        136,785        101,537
Oct 1, 2007....       13       72     392          911      95,798        140,159        101,148
Oct 1, 2008....       14       73     392          964      107,069       143,296        100,068
Oct 1, 2009....       15       74     392        1,020      118,997       146,157         98,184
Oct 1, 2010....       16       75     392        1,080      131,621       148,702         95,371
Oct 1, 2011....       17       76     392        1,143      144,983       150,922         91,488
Oct 1, 2012....       18       77     392        1,209      159,124       152,767         86,376
Oct 1, 2013....       19       78     392        1,280      174,091       154,217         79,859
Oct 1, 2014....       20       79     392        1,355      189,932       155,269         71,736
Oct 1, 2015....       21       80     392        1,434      206,697       155,944         61,783
Oct 1, 2016....       22       81     392        1,517      224,441       156,303         49,750
Oct 1, 2017....       23       82     392        1,606      243,220       156,466         35,358
Oct 1, 2018....       24       83     392        1,700      263,096       156,630         18,291
Oct 1, 2019....       25       84     392        1,799      284,132       157,116              0
Oct 1, 2020....       26       85     392        1,904      306,396       157,735              0
Oct 1, 2021....       27       86     392        2,015      329,960       158,116              0
Oct 1, 2022....       28       87     392        2,133      354,899       158,278              0
Oct 1, 2023....       29       88     392        2,257      381,294       158,246              0
Oct 1, 2024....       30       89     392        2,389      409,230       158,052              0
Oct 1, 2025....       31       90     392        2,528      438,796       157,715              0
Oct 1, 2026....       32       91     392        2,676      470,088       157,759              0
Oct 1, 2027....       33       92     392        2,832      503,207       157,764              0
Oct 1, 2028....       34       93     392        2,998      538,259       157,702              0
Oct 1, 2029....       35       94     392        3,173      575,357       157,516              0
Oct 1, 2030....       36       95     392        3,358      614,621       157,103              0
</TABLE>
    
 
   
*   The exclusion amount does not assume future contributions or withdrawals.
    
 
   
                                  Page 5 of 5
    
   
                          Not valid without all pages.
    
 
   
 The investment returns shown are hypothetical and are not a representation of
                                future results.
                This is an illustration only and not a contract.
            Prepared by The Minnesota Mutual Life Insurance Company
    
 
                                                                              33
<PAGE>

                                     PART B

          INFORMATION REQUIRED IN A STATEMENT OF ADDITIONAL INFORMATION

<PAGE>

                    Minnesota Mutual Variable Annuity Account

          Cross Reference Sheet to Statement of Additional Information


Form N-4

Item Number    Caption in Statement of Additional Information

   15.         Cover Page

   16.         Cover Page

   17.         Trustees and Principal Management Officers of Minnesota Mutual

   18.         Not Applicable

   19.         Not Applicable

   20.         Distribution of Contracts

   21.         Performance Data

   22.         Not Applicable

   23.         Financial Statements

<PAGE>

                    Minnesota Mutual Variable Annuity Account
               ("Variable Annuity Account"), a Separate Account of

                   The Minnesota Mutual Life Insurance Company
                              ("Minnesota Mutual")
                             400 Robert Street North
                         St. Paul, Minnesota  55101-2098
                           Telephone:   (612) 665-3500

                       Statement of Additional Information

   
The date of this document and the Prospectus is:  May 1, 1998
    

   
This Statement of Additional Information is not a prospectus.  Much of the 
information contained in this Statement of Additional Information expands 
upon subjects discussed in the Prospectus.  Therefore, this Statement should 
be read in conjunction with the Fund's current Prospectus, bearing the same 
date, which may be obtained by calling The Minnesota Mutual Life Insurance 
Company at (612) 665-3500, after September 1, 1998, (651) 665-3500, or 
writing to Minnesota Mutual at Minnesota Mutual Life Center, 400 Robert 
Street North, St. Paul, Minnesota 55101-2098.
    

     Trustees and Principal Management Officers of Minnesota Mutual
     Distribution of Contracts
     Performance Data
     Auditors
     Registration Statement
     Financial Statements


                                       -1-
<PAGE>

         TRUSTEES AND PRINCIPAL MANAGEMENT OFFICERS OF MINNESOTA MUTUAL


     Trustees                           Principal Occupation
     --------                           --------------------

Giulio Agostini               Senior Vice President, Finance and Administrative
                              Services, Minnesota Mining and Manufacturing 
                              Company, Maplewood, Minnesota

Anthony L. Andersen           Chair-Board of Directors, H. B. Fuller Company,
                              St. Paul, Minnesota, since June 1995, prior
                              thereto for more than five years President and
                              Chief Executive Officer, H. B. Fuller Company 
                              (Adhesive Products)
   
Leslie S. Biller              President and Chief Operating Officer, Norwest
                              Corporation, Minneapolis, Minnesota (Banking)
    
   
John F. Grundhofer            President and Chief Executive Officer, U.S. 
                              Bancorp, Minneapolis, Minnesota (Banking)
    

Harold V. Haverty             Retired since May 1995, prior thereto, for more
                              than five years Chairman of the Board, President
                              and Chief Executive Officer, Deluxe Corporation,
                              Shoreview, Minnesota (Check Printing)

David S. Kidwell, Ph.D.       Dean and Professor of Finance, The Curtis L.
                              Carlson School of Management, University of
                              Minnesota

Reatha C. King, Ph.D.         President and Executive Director, General Mills
                              Foundation, Minneapolis, Minnesota

Thomas E. Rohricht            Member, Doherty, Rumble & Butler Professional
                              Association, St. Paul, Minnesota (Attorneys)

Terry Tinson Saario, Ph.D.    Prior to March 1996, and for more than five years,
                              President, Northwest Area Foundation, St. Paul,
                              Minnesota (Private Regional Foundation)

Robert L. Senkler             Chairman of the Board, President and Chief 
                              Executive Officer, The Minnesota Mutual Life
                              Insurance Company, since August 1995; prior
                              thereto for more than five years Vice President
                              and Actuary, The Minnesota Mutual Life Insurance
                              Company
   
Michael E. Shannon            Chairman, Chief Financial and Administrative
                              Officer, Ecolab, Inc., St. Paul, Minnesota
                              (Develops and Markets Cleaning and Sanitizing
                              Products)
    
   
Frederick T. Weyerhaeuser     Retired since April 1998, prior thereto 
                              Chairman and Treasurer, Clearwater Investment
                              Trust since May 1996, prior thereto for more than
                              five years, Chairman, Clearwater Management 
                              Company, St. Paul, Minnesota (Financial 
                              Management)
    


                                       -2-

<PAGE>

Principal Officers (other than Trustees)

               Name                     Position

          John F. Bruder           Senior Vice President
   
          Keith M. Campbell        Senior Vice President
    
   
          Frederick P. Feuerherm   Vice President
    
          Robert E. Hunstad        Executive Vice President

          James E. Johnson         Senior Vice President and Actuary
   
          Michael T. Kellett       Vice President
    
          Richard D. Lee           Vice President

   
          Robert M. Olafson        Vice President
    

          Dennis E. Prohofsky      Senior Vice President, General Counsel and
                                   Secretary
   
          Gregory S. Strong        Senior Vice President and Chief Financial 
                                   Officer
    
          Terrence S. Sullivan     Senior Vice President

          Randy F. Wallake         Senior Vice President
   
          William N. Westhoff      Senior Vice President and Treasurer
    
   
All Trustees who are not also officers of Minnesota Mutual have had the 
principal occupation (or employers) shown for at least five years.  All 
officers of Minnesota Mutual have been employed by Minnesota Mutual for 
at least five years with the exception of Mr. Westhoff.  Mr. Westhoff has 
been employed by Minnesota Mutual since April 1998.  Prior thereto, Mr. 
Westhoff was employed by American Express Financial Corporation, Minneapolis, 
Minnesota, from August 1994 to October 1997 as Senior Vice President, Global 
Investments and from November 1989 to July 1994 as Senior Vice President, 
Fixed Income Management.
    

                            DISTRIBUTION OF CONTRACTS 
   
The contract will be sold in a continuous offering by our life insurance 
agents who are also registered representatives of Ascend Financial Services, 
Inc. ("Ascend Financial") or other broker-dealers who have entered into 
selling agreements with Ascend Financial.  Ascend Financial acts as principal 
underwriter of the contracts. Ascend Financial is a wholly-owned subsidiary 
of MIMLIC Asset Management Company, which in turn is a wholly-owned 
subsidiary of Minnesota Mutual. Ascend Financial is registered as a 
broker-dealer under the Securities Exchange Act of 1934 and is a member of 
the National Association of Securities Dealers, Inc.  The amount paid by 
Minnesota Mutual to the underwriter for 1997 and 1996 was $15,067,613 and 
$83,366 for payments to associated dealers on the sale of this class of 
variable annuity contracts issued through the Variable Annuity Account.  
Agents of Minnesota Mutual who are also registered representatives of Ascend 
Financial are compensated directly by Minnesota Mutual. 
    

PERFORMANCE DATA

TOTAL RETURN FIGURES FOR THE SUB-ACCOUNT
   

Average annual total return figures for one-year, five-year and ten-year 
periods are presented.  Average annual total return figures are the average 
annual compounded rates of return required for an initial investment of 
$10,000 to equal the total annuity value of that same investment at the end 
of the period.  The total annuity value will reflect the deduction of the 
sales and risk charges applicable to the contract.  The average annual total 
return figures published by the Variable Annuity Account will reflect 
Minnesota Mutual's voluntary absorption of certain Fund expenses. For the 
period subsequent to December 31, 1987, Minnesota Mutual is voluntarily 
absorbing the fees and expenses that exceed .55% of the daily net assets of 
the Index 500 Portfolio.  There is no specified or minimum period of time 
during which Minnesota Mutual has agreed to continue its voluntary absorption 
of these expenses, and Minnesota Mutual may in its discretion cease its 
absorption of expenses at any time.  Should Minnesota Mutual cease absorbing 
expenses the effect would be to increase substantially Fund expenses and 
thereby reduce investment return.
    
                                       -3-
<PAGE>

   
The average annual rates of return for the Sub-Account, in connection with the
contract described in the Prospectus, for the specified periods ended
December 31, 1997 are shown in the table below.  The figures in parentheses show
what the average annual rates of return would have been had Minnesota Mutual not
absorbed Fund expenses as described above.  These figures also assume that the
contracts described herein were issued when the underlying Portfolio first
became available to the Variable Annuity Account.
    

   
<TABLE>
<CAPTION>
                         Year Ended         Five Years          Ten Years
                          12/31/97        Ended 12/31/97     Ended 12/31/97
                         ----------       --------------     --------------
<S>                    <C>                <C>                <C>
Index 500 Sub-Account  12.54% (12.54%)    16.98% (16.98%)    15.56% (15.53%)

</TABLE>
    


                                    AUDITORS

   
The financial statements of Minnesota Mutual Variable Annuity Account and the 
consolidated financial statements of Minnesota Mutual included herein have 
been audited by KPMG Peat Marwick LLP, 4200 Norwest Center, 90 South Seventh 
Street, Minneapolis, Minnesota 55402, independent auditors, whose reports 
thereon appear elsewhere herein, and have been so included in reliance upon 
the reports of KPMG Peat Marwick LLP and upon the authority of  said firm as 
experts in accounting and auditing.
    

                             REGISTRATION STATEMENT

We have filed with the Securities and Exchange Commission a registration
statement under the Securities Act of 1933, as amended, with respect to the
contracts offered hereby.  This Prospectus does not contain all the information
set forth in the registration statement and amendments thereto and the exhibits
filed as a part thereof, to all of which reference is hereby made for further
information concerning the Variable Annuity Account, Minnesota Mutual, and the
contracts.  Statements contained in this Statement of Additional Information as
to the contents of contracts and other legal instruments are summaries, and
reference is made to such instruments as filed.


                                       -4-
<PAGE>

                             INDEPENDENT AUDITORS' REPORT


The Board of Trustees of The Minnesota Mutual Life Insurance Company
     and Contract Owners of Minnesota Mutual Variable Annuity Account:

We have audited the accompanying statement of assets and liabilities of the
Index 500 Segregated Sub-Account of the Minnesota Mutual Variable Annuity
Account (the Account) (contracts offered for individual, immediate annuity
contracts for personal retirement plans) as of December 31, 1997, the related
statement of operations for the year then ended and the statements of changes in
net assets for the year ended December 31, 1997 and the period from June 4,
1996, commencement of operations, to December 31, 1996.  These financial
statements are the responsibility of the Account's management.  Our
responsibility is to express an opinion on these financial statements based on
our audits.

We conducted our audits in accordance with generally accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  Investments owned at
December 31, 1997 were verified by examination of the underlying portfolio of
Advantus Series Fund, Inc. (formerly MIMLIC Series Fund, Inc.).  An audit also
includes assessing the accounting principles used and significant estimates made
by management as well as evaluating the overall financial statement
presentation.  We believe that our audits provide a reasonable basis for our
opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of the Index 500 Segregated
Sub-Account of Minnesota Mutual Variable Annuity Account at December 31, 1997
and the results of its operations and changes in its net assets for the periods
stated in the first paragraph above, in conformity with generally accepted
accounting principles.





                                   KPMG Peat Marwick LLP


Minneapolis, Minnesota
February 20, 1998
<PAGE>

                      MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
                         STATEMENT OF ASSETS AND LIABILITIES
                                  DECEMBER 31, 1997

<TABLE>
<CAPTION>


                                        ASSETS

<S>                                                            <C>
   
Investments in shares of Advantus Series Fund, Inc. - Index 
     500 Portfolio, 2,519,802 shares at net asset value of 
     $3.10 per share (cost $6,858,178) . . . . . . . . . . .   $  7,820,676
    
Receivable from Advantus Series Fund, Inc. for
     investments sold  . . . . . . . . . . . . . . . . . . .            294
                                                               ------------

       Total assets. . . . . . . . . . . . . . . . . . . . .      7,820,970
                                                               ------------

                                     LIABILITIES 

Payable to Minnesota Mutual for contract terminations and
     mortality and expense charges . . . . . . . . . . . . .            294
                                                               ------------

       Total liabilities . . . . . . . . . . . . . . . . . .            294
                                                               ------------

       Net assets applicable to annuity contract owners. . .   $  7,820,676
                                                               ------------
                                                               ------------

                               CONTRACT OWNERS' EQUITY

Contracts in annuity payment period (note 2) . . . . . . . .   $  7,820,676
                                                               ------------

       Total contract owners' equity . . . . . . . . . . . .   $  7,820,676
                                                               ------------
                                                               ------------
</TABLE>


See accompanying notes to financial statements.
<PAGE>

                      MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
                               STATEMENT OF OPERATIONS
                             YEAR ENDED DECEMBER 31, 1997
<TABLE>
<CAPTION>


<S>                                                              <C>
Investment income (loss):
     Investment income distributions from underlying mutual
     fund (note 4) . . . . . . . . . . . . . . . . . . . . .      $  30,696
     Mortality and expense charges (note 3). . . . . . . . .        (34,037)
     Administrative charges (note 3) . . . . . . . . . . . .         (6,382)
                                                                 ----------

       Investment loss - net . . . . . . . . . . . . . . . .         (9,723)
                                                                 ----------

Realized and unrealized gains on investments - net:
     Realized gain distributions from underlying mutual
     fund (note 4) . . . . . . . . . . . . . . . . . . . . .         38,781
                                                                 ----------

     Realized gains on sales of investments:
       Proceeds from sales . . . . . . . . . . . . . . . . .        827,053
       Cost of investments sold. . . . . . . . . . . . . . .       (719,951)
                                                                 ----------

                                                                    107,102
                                                                 ----------

       Net realized gains on investments . . . . . . . . . .        145,883
                                                                 ----------

Net change in unrealized appreciation or depreciation
      of investments . . . . . . . . . . . . . . . . . . . .        827,107
                                                                 ----------

       Net gains on investments. . . . . . . . . . . . . . .        972,990
                                                                 ----------

       Net increase in net assets resulting from
        operations . . . . . . . . . . . . . . . . . . . . .     $  963,267
                                                                 ----------
                                                                 ----------
</TABLE>


See accompanying notes to financial statements.
<PAGE>

                      MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
                         STATEMENTS OF CHANGES IN NET ASSETS
      YEAR ENDED DECEMBER 31, 1997 AND PERIOD FROM JUNE 4, 1996, COMMENCEMENT OF
                           OPERATIONS, TO DECEMBER 31, 1996

<TABLE>
<CAPTION>

                                                                                              1997                1996
                                                                                         -------------       ------------
<S>                                                                                        <C>                 <C>
Operations:
     Investment loss - net . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       $  (9,723)          $  (4,202)
     Net realized gains on investments . . . . . . . . . . . . . . . . . . . . . . .         145,883               5,974
     Net change in unrealized appreciation or depreciation
       of investments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         827,107             135,391
                                                                                         ------------        -----------

Net increase in net assets resulting from operations . . . . . . . . . . . . . . . .         963,267             137,163
                                                                                         ------------        -----------


Contract transactions (notes 2, 3 and 4):
     Contract purchase payments. . . . . . . . . . . . . . . . . . . . . . . . . . .       5,596,884           1,988,830
     Contract terminations and withdrawal payments . . . . . . . . . . . . . . . . .        (441,196)            (61,520)
     Actuarial adjustments for mortality experience on annuities
       in payment period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         (83,544)              4,483
     Annuity benefit payments  . . . . . . . . . . . . . . . . . . . . . . . . . . .        (261,894)            (21,797)
                                                                                         ------------        -----------

Increase in net assets from contract transactions  . . . . . . . . . . . . . . . . .       4,810,250           1,909,996
                                                                                         ------------        -----------

Increase in net assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       5,773,517           2,047,159

Net assets at the beginning of period  . . . . . . . . . . . . . . . . . . . . . . .       2,047,159               -
                                                                                         ------------        -----------

Net assets at the end of period. . . . . . . . . . . . . . . . . . . . . . . . . . .    $  7,820,676        $  2,047,159
                                                                                         ------------        -----------
                                                                                         ------------        -----------
</TABLE>


See accompanying notes to financial statements.
<PAGE>

                     MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
                           NOTES TO FINANCIAL STATEMENTS

(1)  ORGANIZATION AND BASIS OF PRESENTATION
     
     The Minnesota Mutual Variable Annuity Account (the Account) was established
     on September 10, 1984 as a segregated asset account of The Minnesota Mutual
     Life Insurance Company (Minnesota Mutual) under Minnesota law and is
     registered as a unit investment trust under the Investment Company Act of
     1940 (as amended).  There are currently four types of contracts each
     consisting of one to twenty segregated sub-accounts.  The financial
     statements presented herein include only the segregated sub-account offered
     in connection with the sale of the individual, immediate variable annuity
     contracts for personal retirement plans (Adjustable Income Annuity).
     
     The assets of the Account are held for the exclusive benefit of the
     immediate variable annuity contract owners and are not chargeable with
     liabilities arising out of the business conducted by any other account or
     by Minnesota Mutual.  Purchase payments made by contract owners are
     invested in shares of the Index 500 Portfolio of the Advantus Series Fund,
     Inc.  (formerly MIMLIC Series Fund, Inc.).  The Advantus Series Fund, Inc.
     (the Fund) was organized by Minnesota Mutual as the investment vehicle for
     its variable annuity contracts and variable life policies.  The Fund is
     registered under the Investment Company Act of 1940 (as amended) as a
     diversified, open-end management investment company.
     
     Ascend Financial Services, Inc. (formerly MIMLIC Sales Corporation) acts as
     the underwriter for the Account.  Advantus Capital Management, Inc. acts as
     the investment adviser for the Fund.  Ascend Financial Services, Inc. and
     Advantus Capital Management, Inc. are wholly-owned subsidiaries of MIMLIC
     Asset Management Company.  MIMLIC Asset Management Company is a
     wholly-owned subsidiary of Minnesota Mutual.
     
(2)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     USE OF ESTIMATES

     The preparation of financial statements in conformity with generally
     accepted accounting principles requires management to make estimates and
     assumptions that affect the reported amounts of assets and liabilities and
     disclosure of contingent assets and liabilities at the date of the
     financial statements and the reported amounts of increases and decreases in
     net assets resulting from operations during the period.  Actual results
     could differ from those estimates.
<PAGE>

                                         2
   
                     MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
                     NOTES TO FINANCIAL STATEMENTS - CONTINUED
    
    
(2)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - CONTINUED
     
     INVESTMENTS IN ADVANTUS SERIES FUND, INC. - CONTINUED
     
     Investments in shares of the Fund are stated at market value which is the
     net asset value per share as determined daily by the Fund.  Investment
     transactions are accounted for on the date the shares are purchased or
     sold.  The cost of investments sold is determined on the average cost
     method.  All dividend distributions received from the Fund are reinvested
     in additional shares of the Fund and are recorded by the segregated
     sub-account on the ex-dividend date.
     
     FEDERAL INCOME TAXES
     
     The Account is treated as part of Minnesota Mutual for federal income tax
     purposes.  Under current interpretations of existing federal income tax
     law, no income taxes are payable on investment income or capital gain
     distributions received by the Account from the Fund.
     
     CONTRACTS IN ANNUITY PAYMENT PERIOD
     
     Annuity reserves are computed for currently payable contracts according to
     the Individual Annuity 1983 Table A, using an assumed interest rate of 4.5
     percent.  Charges to annuity reserves for mortality and risk expense are
     reimbursed to Minnesota Mutual if the reserves required are less than
     originally estimated.  If additional reserves are required, Minnesota
     Mutual reimburses the Account.
     
(3)  CONTRACT CHARGES
    
     The mortality and expense risk charge paid to Minnesota Mutual is computed
     daily and is equal, on an annual basis, to .80 percent of the average daily
     net assets of the Account.  Under certain conditions, the charge may be
     increased to not more than 1.40 percent of the average daily net assets of
     the Account.
    
     The administrative charge paid to Minnesota Mutual is computed daily and is
     equal, on an annual basis, to .15 percent of the average daily net assets
     of the Account.  Under certain conditions, the administrative charge may be
     increased to not more than .40 percent of the average daily net assets of
     the Account.  
<PAGE>

                                          3
   
                      MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
                      NOTES TO FINANCIAL STATEMENTS - CONTINUED
    
(3)  CONTRACT CHARGES - CONTINUED
    
     Contract purchase payments are reflected net of the following charges paid
     to Minnesota Mutual:
     
          A sales charge ranging from 3.75 to 4.50 percent, depending upon the
          total amount of purchase payments, is deducted from each contract
          purchase payment.  Total sales charges deducted from contract purchase
          payments for the year ended December 31, 1997 and the period from June
          4, 1996, commencement of operations, to December 31, 1996 amounted to
          $124,177 and $89,278, respectively.
     
          A risk charge in the amount of 1.25 percent is deducted from each
          contract purchase payment.  Under certain conditions, the risk charge
          may be as high as 2.00 percent.  Total risk charges deducted from
          contract purchase payments for the year ended December 31, 1997 and
          the period from June 4, 1996, commencement of operations, to December
          31, 1996 amounted to $36,963 and $26,559, respectively.
    
          A premium tax charge of up to 3.50 percent is deducted from each
          contract purchase payment. Total premium tax charges deducted from
          contract purchase payments for the year ended December 31, 1997 and
          the period from June 4, 1996, commencement of operations, to December
          31, 1996 amounted to $3,218 and $2,307, respectively.
     
(4)  INVESTMENT TRANSACTIONS
     
     The Account's purchases of Index 500 Portfolio shares, including
     reinvestment of distributions, amounted to $5,666,361 for the year ended
     December 31, 1997.


<PAGE>
 
 INDEPENDENT AUDITORS' REPORT
The Board of Trustees
The Minnesota Mutual Life Insurance Company
 
  We have audited the accompanying consolidated balance sheets of The Minnesota
Mutual Life Insurance Company and subsidiaries as of December 31, 1997 and
1996, and the related consolidated statements of operations and policyowners'
surplus and cash flows for each of the years in the three-year period ended
December 31, 1997. These consolidated financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these consolidated financial statements based on our audits.
  We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audits to
obtain reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
  In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of The
Minnesota Mutual Life Insurance Company and subsidiaries as of December 31,
1997 and 1996, and the results of their operations and their cash flows for
each of the years in the three-year period ending December 31, 1997 in
conformity with generally accepted accounting principles.
  Our audits were made for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplementary information included
in the accompanying schedules is presented for purpose of additional analysis
and is not a required part of the basic financial statements. Such information
has been subjected to the auditing procedures applied in the audits of the
basic financial statements and, in our opinion, is fairly stated in all
material respects in relation to the basic financial statements taken as a
whole.
 
                             KPMG Peat Marwick LLP
 
Minneapolis, Minnesota
February 9, 1998
 
60
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
 
DECEMBER 31, 1997 AND 1996
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                        1997        1996
                                                     ----------- -----------
                                                         (IN THOUSANDS)
<S>                                                  <C>         <C>
Fixed maturity securities:
  Available-for-sale, at fair value (amortized cost
   $4,518,807 and $4,558,975)                        $ 4,719,801 $ 4,674,082
  Held-to-maturity, at amortized cost (fair value
   $1,158,227 and $1,179,112)                          1,088,312   1,125,638
Equity securities, at fair value (cost $537,441 and
 $429,509)                                               686,638     549,797
Mortgage loans, net                                      661,337     608,808
Real estate, net                                          39,964      43,082
Policy loans                                             213,488     204,178
Short-term investments                                   112,352     126,372
Other invested assets                                    216,838      94,647
                                                     ----------- -----------
  Total investments                                    7,738,730   7,426,604
Cash                                                      96,179      57,140
Finance receivables, net                                 211,794     259,192
Deferred policy acquisition costs                        576,030     589,517
Accrued investment income                                 83,439      90,996
Premiums receivable                                       68,030      77,140
Property and equipment, net                               58,123      55,050
Reinsurance recoverables                                 150,126     126,629
Other assets                                              52,852      54,798
Separate account assets                                5,366,810   3,706,256
                                                     ----------- -----------
    Total assets                                     $14,402,113 $12,443,322
                                                     =========== ===========
 
                     LIABILITIES AND POLICYOWNERS' SURPLUS
 
Liabilities:
  Policy and contract account balances               $ 4,275,221 $ 4,310,015
  Future policy and contract benefits                  1,687,529   1,638,720
  Pending policy and contract claims                      64,356      70,577
  Other policyowner funds                                416,752     396,848
  Policyowner dividends payable                           55,321      49,899
  Unearned premiums and fees                             202,070     207,111
  Federal income tax liability:
    Current                                               45,300      25,643
    Deferred                                             166,057     149,665
  Other liabilities                                      334,305     286,042
  Notes payable                                          298,000     319,000
  Separate account liabilities                         5,320,517   3,691,374
                                                     ----------- -----------
    Total liabilities                                $12,865,428 $11,144,894
                                                     =========== ===========
Policyowners' surplus:
  Unassigned surplus                                   1,380,012   1,190,116
  Net unrealized investment gains                        156,673     108,312
                                                     ----------- -----------
   Total policyowners' surplus                         1,536,685   1,298,428
                                                     ----------- -----------
    Total liabilities and policyowners' surplus      $14,402,113 $12,443,322
                                                     =========== ===========
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                                                              61
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
CONSOLIDATED STATEMENTS OF OPERATIONS AND POLICYOWNERS' SURPLUS
 
YEARS ENDED DECEMBER 31, 1997, 1996, AND 1995
 
                            STATEMENTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                             1997        1996        1995
                                          ----------  ----------  ----------
                                                   (IN THOUSANDS)
<S>                                       <C>         <C>         <C>
Revenues:
  Premiums                                $  615,253  $  612,359  $  603,770
  Policy and contract fees                   272,037     245,966     214,203
  Net investment income                      553,773     530,987     515,047
  Net realized investment gains              114,367      55,574      62,292
  Finance charge income                       43,650      46,932      39,937
  Other income                                71,707      51,630      40,250
                                          ----------  ----------  ----------
    Total revenues                         1,670,787   1,543,448   1,475,499
                                          ----------  ----------  ----------
Benefits and expenses:
  Policyowner benefits                       515,873     541,520     517,771
  Interest credited to policies and con-
   tracts                                    298,033     288,967     297,145
  General operating expenses                 369,961     302,618     273,425
  Commissions                                114,404     103,370      93,465
  Administrative and sponsorship fees         81,750      79,360      76,223
  Dividends to policyowners                   26,776      24,804      27,282
  Interest on notes payable                   24,192      22,798      11,128
  Increase in deferred policy acquisi-
   tion costs                                (26,878)    (19,284)    (34,173)
                                          ----------  ----------  ----------
    Total benefits and expenses            1,404,111   1,344,153   1,262,266
                                          ----------  ----------  ----------
     Income from operations before taxes     266,676     199,295     213,233
  Federal income tax expense (benefit):
    Current                                   84,612      68,033      71,379
    Deferred                                  (7,832)        744      11,995
                                          ----------  ----------  ----------
     Total federal income tax expense         76,780      68,777      83,374
      Net income                          $  189,896  $  130,518  $  129,859
                                          ==========  ==========  ==========
 
                      STATEMENTS OF POLICYOWNERS' SURPLUS
 
Policyowners' surplus, beginning of year  $1,298,428  $1,212,850  $  874,577
  Net income                                 189,896     130,518     129,859
  Change in net unrealized investment
   gains and losses                           48,361     (44,940)    208,414
                                          ----------  ----------  ----------
Policyowners' surplus, end of year        $1,536,685  $1,298,428  $1,212,850
                                          ==========  ==========  ==========
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
62
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
 
YEARS ENDED DECEMBER 31, 1997, 1996, AND 1995
 
<TABLE>
<CAPTION>
                                            1997         1996         1995
                                         -----------  -----------  -----------
                                                   (IN THOUSANDS)
<S>                                      <C>          <C>          <C>
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income                               $   189,896  $   130,518  $   129,859
Adjustments to reconcile net income to
 net cash provided by operating activi-
 ties:
  Interest credited to annuity and in-
   surance contracts                         276,719      275,968      288,218
  Fees deducted from policy and con-
   tract balances                           (214,803)    (206,780)    (201,575)
  Change in future policy benefits            76,358       84,389      100,025
  Change in other policyowner liabili-
   ties                                        7,597       16,099       (4,762)
  Change in deferred policy acquisition
   costs                                     (19,430)     (15,312)     (29,822)
  Change in premiums due and other re-
   ceivables                                  (9,280)     (26,142)     (18,039)
  Change in federal income tax liabili-
   ties                                        5,277      (12,055)      18,376
  Net realized investment gains             (123,016)     (59,546)     (66,643)
  Other, net                                   8,760       29,987       36,561
                                         -----------  -----------  -----------
    Net cash provided by operating ac-
     tivities                                198,078      217,126      252,198
                                         -----------  -----------  -----------
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sales of:
  Fixed maturity securities, available-
   for-sale                                1,099,114      877,682    1,349,348
  Equity securities                          601,936      352,901      203,493
  Mortgage loans                                 --        15,567        4,315
  Real estate                                  9,279       11,678       15,948
  Other invested assets                       26,877       12,280       10,775
Proceeds from maturities and repayments
 of:
  Fixed maturity securities, available-
   for-sale                                  403,829      329,550      253,576
  Fixed maturity securities, held-to-
   maturity                                  139,394      114,222      127,617
  Mortgage loans                             109,246       94,703      104,730
Purchases of:
  Fixed maturity securities, available-
   for-sale                               (1,498,048)  (1,228,048)  (1,975,130)
  Fixed maturity securities, held-to-
   maturity                                  (82,835)     (60,612)    (140,763)
  Equity securities                         (585,349)    (446,599)    (212,142)
  Mortgage loans                            (157,247)    (108,691)    (209,399)
  Real estate                                 (3,908)      (3,786)     (16,554)
  Other invested assets                      (55,988)     (29,271)     (20,517)
Finance receivable originations or pur-
 chases                                     (115,248)    (175,876)    (167,298)
Finance receivable principal payments        133,762      142,723      123,515
Other, net                                   (88,626)     (40,062)     (19,292)
                                         -----------  -----------  -----------
    Net cash used for investing activi-
     ties                                    (63,812)    (141,639)    (567,778)
                                         -----------  -----------  -----------
CASH FLOWS FROM FINANCING ACTIVITIES
Deposits credited to annuity and insur-
 ance contracts                              928,696      657,405      710,525
Withdrawals from annuity and insurance
 contracts                                (1,013,588)    (702,681)    (563,569)
Proceeds from issuance of surplus notes          --           --       124,967
Proceeds from issuance of debt by sub-
 sidiary                                         --        60,000       50,000
Payments on debt by subsidiary               (21,000)     (21,000)     (10,000)
Other, net                                    (3,355)      (6,898)      (3,801)
                                         -----------  -----------  -----------
    Net cash provided by (used for) fi-
     nancing activities                     (109,247)     (13,174)     308,122
                                         -----------  -----------  -----------
Net increase (decrease) in cash and
 short-term investments                       25,019       62,313       (7,458)
Cash and short-term investments, begin-
 ning of year                                183,512      121,199      128,657
                                         -----------  -----------  -----------
Cash and short-term investments, end of
 year                                    $   208,531  $   183,512  $   121,199
                                         ===========  ===========  ===========
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                                                              63
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(1) NATURE OF OPERATIONS
 
The Minnesota Mutual Life Insurance Company (the Company), both directly and
through its subsidiaries, provides a diversified array of insurance and
financial products and services designed principally to protect and enhance the
long-term financial well-being of individuals and families.
  The Company's strategy is to be successful in carefully selected niche
markets, primarily in the United States, while focusing on the retention of
existing business and the maintenance of profitability. To achieve this
objective, the Company has divided its businesses into four strategic business
units which focus on various markets: Individual, Financial Services, Group,
and Pension. Revenues in 1997 for these business units were $854,192,000,
$284,222,000, $232,619,000 and $114,324,000, respectively. Additional revenues
of $185,430,000, were reported by the Company's subsidiaries.
  At December 31, 1997, the Company was one of the 12 largest mutual life
insurance company groups in the United States, as measured by total assets. The
Company serves nearly seven million people through more than 4,000 associates
located at its St. Paul headquarters and in 81 general agencies and 43 regional
offices throughout the United States.
 
(2) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
Basis of Presentation
The accompanying consolidated financial statements have been prepared in
accordance with generally accepted accounting principles (GAAP), which vary in
certain respects from accounting practices prescribed or permitted by state
insurance regulatory authorities. The consolidated financial statements include
the accounts of The Minnesota Mutual Life Insurance Company and its
subsidiaries (collectively, "the Company"). All material intercompany
transactions and balances have been eliminated.
  The preparation of financial statements in conformity with GAAP requires
management to make certain estimates and assumptions that affect reported
assets and liabilities, including reporting or disclosure of contingent assets
and liabilities as of the balance sheet date and the reported amounts of
revenues and expenses during the reporting period. Future events, including
changes in mortality, morbidity, interest rates, and asset valuations, could
cause actual results to differ from the estimates used in the financial
statements.
 
Insurance Revenues and Expenses
Premiums on traditional life products, which include individual whole life and
term insurance and immediate annuities, are credited to revenue when due. For
accident and health and group life products, premiums are credited to revenue
over the contract period as earned. Benefits and expenses are recognized in
relation to premiums over the contract period via a provision for future policy
benefits and the amortization of deferred policy acquisition costs.
  Nontraditional life products include individual adjustable and variable life
insurance and group universal and variable life insurance. Revenue from
nontraditional life products and deferred annuities is comprised of policy and
contract fees charged for the cost of insurance, policy administration and
surrenders. Expenses include the portion of claims not covered by and interest
credited to the related policy and contract account balances. Policy
acquisition costs are amortized relative to estimated gross profits or margins.
 
Deferred Policy Acquisition Costs
The costs of acquiring new and renewal business, which vary with and are
primarily related to the production of new and renewal business, are generally
deferred to the extent recoverable from future premiums or expected gross
profits. Deferrable costs include commissions, underwriting expenses and
certain other selling and issue costs.
  For traditional life, accident and health and group life products, deferred
acquisition costs are amortized over the premium paying period in proportion to
the ratio of annual premium revenues to ultimate anticipated
 
64
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(2) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
 
premium revenues. The ultimate premium revenues are estimated based upon the
same assumptions used to calculate the future policy benefits.
  For nontraditional life products and deferred annuities, deferred acquisition
costs are amortized over the estimated lives of the contracts in relation to
the present value of estimated gross profits from surrender charges and
investment, mortality and expense margins.
  Deferred acquisition costs amortized were $128,176,000, $125,978,000 and
$104,940,000 for the years ended December 31, 1997, 1996 and 1995,
respectively.
 
Finance Charge Income and Receivables
Finance charge income represents fees and interest charged on consumer loans.
The Company uses the interest (actuarial) method of accounting for finance
charges and interest on finance receivables. Accrual of finance charges and
interest on the smaller balance homogeneous finance receivables is suspended
when a loan is contractually delinquent for more than 60 days and is
subsequently recognized when received. Accrual is resumed when the loan is
contractually less than 60 days past due. Finance charges and interest is
suspended when a loan is considered by management to be impaired. Loan
impairment is measured based on the present value of expected future cash flows
discounted at the loan's effective interest rate, or as a practical expedient,
at the observable market price of the loan or the fair value of the collateral
if the loan is collateral dependent. When a loan is identified as impaired,
interest previously accrued in the current year is reversed. Interest payments
received on impaired loans are generally applied to principal unless the
remaining principal balance has been determined to be fully collectible. An
allowance for uncollectible amounts is maintained by direct charges to
operations at an amount which management believes, based upon historical losses
and economic conditions, is adequate to absorb probable losses on existing
receivables that may become uncollectible. The reported receivables are net of
this allowance.
 
Valuation of Investments
Fixed maturity securities (bonds) which the Company has the positive intent and
ability to hold to maturity are classified as held-to-maturity and are carried
at amortized cost, net of write-downs for other than temporary declines in
value. Premiums and discounts are amortized or accreted over the estimated
lives of the securities based on the interest yield method. Fixed maturity
securities which may be sold prior to maturity are classified as available-for-
sale and are carried at fair value.
  Equity securities (common stocks and preferred stocks) are carried at fair
value. Equity securities also include initial contributions to affiliated
registered investment funds that are managed by a subsidiary of the Company.
These contributions are carried at the market value of the underlying net
assets of the funds.
  Mortgage loans are carried at amortized cost less an allowance for
uncollectible amounts. Premiums and discounts are amortized or accreted over
the terms of the mortgage loans based on the interest yield method. A mortgage
loan is considered impaired if it is probable that contractual amounts due will
not be collected. Impaired mortgage loans are valued at the fair value of the
underlying collateral. Interest income on impaired mortgage loans is recorded
on an accrual basis. However, when the likelihood of collection is doubtful,
interest income is recognized when received.
  Fair values of fixed maturity securities and equity securities are based on
quoted market prices, where available. If quoted market prices are not
available, fair values are estimated using values obtained from independent
pricing services which specialize in matrix pricing and modeling techniques for
estimating fair values. Fair values of mortgage loans are based upon discounted
cash flows, quoted market prices and matrix pricing.
  Real estate is carried at cost less accumulated depreciation and an allowance
for estimated losses. Accumulated depreciation on real estate at December 31,
1997 and 1996, was $6,269,000 and $5,968,000, respectively.
  Policy loans are carried at the unpaid principal balance.
 
                                                                              65
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(2) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
 
Derivative Financial Instruments
The Company entered into equity swaps in 1996 as part of an overall risk
management strategy. The swaps were used to hedge exposure to market risk on
$400,000,000 of the Company's common stock portfolio. The swaps were based upon
certain stock indices. If, at the time of settlement for a particular swap, the
designated stock index had fallen below a specified level, the counterparty
would pay the Company an amount based upon the decline in the index and the
stock portfolio value protected by the swap. If, at the time of settlement, the
designated stock index had risen, the Company would pay the counterparty an
amount based upon the increase in the index and 25% of the stock portfolio
value protected by the swap. The equity swaps were settled with the
counterparties in August of 1997.
  The swaps were carried at fair value, which were based upon dealer quotes.
Changes in fair value were recorded directly in policyowners' surplus. Upon
settlement of the swaps, gains or losses were recognized in income. The Company
realized a loss of approximately $31 million in 1997, upon settlement of these
equity swaps.
  The Company began investing in international bonds denominated in foreign
currencies in 1997. The Company uses forward foreign exchange currency
contracts as part of its risk management strategy for international
investments. The forward foreign exchange currency contracts are used to reduce
market risks from changes in foreign exchange rates. These forward foreign
exchange currency contracts are agreements to purchase a specified amount of
one currency in exchange for a specified amount of another currency at a future
point in time at a foreign exchange currency rate agreed upon on the contract
open date. No cash is exchanged at the outset of the contract and no payments
are made by either party until the contract close date. On the contract close
date the contracted amount of the purchased currency is received from the
counterparty and the contracted amount of the sold currency is sent to the
counterparty. These contracts are generally short-term in nature and there is
no material exposure to the Company at December 31, 1997.
 
Capital Gains and Losses
Realized and unrealized capital gains and losses are determined on the specific
identification method. Write-downs of held-to-maturity securities and the
provision for credit losses on mortgage loans and real estate are recorded as
realized losses.
  Changes in the fair value of fixed maturity securities available-for-sale and
equity securities are recorded as a separate component of policyowners'
surplus, net of taxes and related adjustments to deferred policy acquisition
costs and unearned policy and contract fees.
 
Property and Equipment
Property and equipment are carried at cost, net of accumulated depreciation of
$90,926,000 and $81,962,000 at December 31, 1997 and 1996, respectively.
Buildings are depreciated over 40 years and equipment is generally depreciated
over 5 to 10 years. Depreciation expenses for the years ended December 31,
1997, 1996 and 1995, were $8,965,000, $6,454,000 and $5,941,000, respectively.
 
Separate Accounts
Separate account assets and liabilities represent segregated funds administered
and invested by the Company for the exclusive benefit of pension, variable
annuity and variable life insurance policyowners and contractholders. Assets
consist principally of marketable securities and both assets and liabilities
are reported at fair value, based upon the market value of the investments held
in the segregated funds. The Company receives administrative and investment
advisory fees for services rendered on behalf of these accounts.
  The Company periodically invests money in its separate accounts. The market
value of such investments is included with separate account assets and amounted
to $46,293,000 and $14,882,000 as of December 31, 1997 and 1996, respectively.
 
66
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(2) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
 
Policyowner Liabilities
Policy and contract account balances represent the net accumulation of funds
associated with nontraditional life products and deferred annuities. Additions
to the account balances include premiums, deposits and interest credited by the
Company. Decreases in the account balances include surrenders, withdrawals,
benefit payments, and charges assessed for the cost of insurance, policy
administration and surrenders.
  Future policy and contract benefits are comprised of reserves for traditional
life, group life, and accident and health products. The reserves were
calculated using the net level premium method based upon assumptions regarding
investment yield, mortality, morbidity, and withdrawal rates determined at the
date of issue, commensurate with the Company's experience. Provision has been
made in certain cases for adverse deviations from these assumptions.
  Other policyowner funds are comprised of dividend accumulations, premium
deposit funds and supplementary contracts without life contingencies.
 
Participating Business
Substantially all of the Company's premium revenues are derived from
participating policies. Dividends and other discretionary payments are declared
by the Board of Trustees based upon actuarial determinations, which take into
consideration current mortality, interest earnings, expense factors, and
federal income taxes. Dividends are recognized as expenses consistent with the
recognition of premiums.
 
Income Taxes
Current income taxes are charged to operations based upon amounts estimated to
be payable as a result of taxable operations for the current year. Deferred
income tax assets and liabilities are recognized for the future tax
consequences attributable to the differences between financial statement
carrying amounts and income tax bases of assets and liabilities.
 
Reinsurance Recoverables
Insurance liabilities are reported before the effects of ceded reinsurance.
Reinsurance recoverables represent amounts due from reinsurers for paid and
unpaid benefits, expense reimbursements, prepaid premiums and future policy
benefits.
 
Reclassifications
Certain 1996 and 1995 financial statement balances have been reclassified to
conform with the 1997 presentation.
 
(3) INVESTMENTS
 
Net investment income for the years ended December 31 was as follows:
 
<TABLE>
<CAPTION>
                             1997      1996      1995
                           --------  --------  --------
                                 (IN THOUSANDS)
<S>                        <C>       <C>       <C>
Fixed maturity securities  $457,391  $433,985  $426,114
Equity securities            16,182    14,275     8,883
Mortgage loans               55,929    63,865    58,943
Real estate                    (407)     (475)      497
Policy loans                 15,231    13,828    12,821
Short-term investments        6,995     6,535     6,716
Other invested assets         3,871     4,901     5,168
                           --------  --------  --------
  Gross investment income   555,192   536,914   519,142
Investment expenses          (1,419)   (5,927)   (4,095)
                           --------  --------  --------
    Total                  $553,773  $530,987  $515,047
                           ========  ========  ========
</TABLE>
 
                                                                              67
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(3) INVESTMENTS (CONTINUED)
 
  Net realized capital gains (losses) for the years ended December 31 were as
follows:
 
<TABLE>
<CAPTION>
                             1997    1996     1995
                           -------- -------  -------
                                (IN THOUSANDS)
<S>                        <C>      <C>      <C>
Fixed maturity securities  $  3,711 $(6,536) $24,025
Equity securities            92,765  57,770   36,374
Mortgage loans                2,011    (721)    (207)
Real estate                   1,598   7,088    2,436
Other invested assets        14,282  (2,027)    (336)
                           -------- -------  -------
    Total                  $114,367 $55,574  $62,292
                           ======== =======  =======
</TABLE>
 
  Gross realized gains (losses) on the sales of fixed maturity securities and
equity securities for the years ended December 31 were as follows:
<TABLE>
<CAPTION>
                                                  1997      1996      1995
                                                --------  --------  --------
                                                      (IN THOUSANDS)
<S>                                             <C>       <C>       <C>
Fixed maturity securities, available-for-sale:
  Gross realized gains                          $ 18,804  $ 19,750  $ 34,898
  Gross realized losses                          (15,093)  (26,286)  (10,873)
Equity securities:
  Gross realized gains                           151,200    79,982    52,670
  Gross realized losses                          (27,672)  (22,212)  (16,296)
</TABLE>
 
  Net unrealized gains (losses) included in policyowners' surplus at December
31 were as follows:
 
<TABLE>
<CAPTION>
                                                   1997       1996
                                                 ---------  --------
                                                   (IN THOUSANDS)
<S>                                              <C>        <C>
Gross unrealized gains                           $ 472,671  $314,576
Gross unrealized losses                           (118,863)  (77,337)
Adjustment to deferred acquisition costs          (100,299)  (65,260)
Adjustment to unearned policy and contract fees    (13,087)   (8,192)
Deferred federal income taxes                      (83,749)  (55,475)
                                                 ---------  --------
  Net unrealized gains                           $ 156,673  $108,312
                                                 =========  ========
</TABLE>
 
68
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(3) INVESTMENTS (CONTINUED)
 
  The amortized cost and fair value of investments in marketable securities by
type of investment were as follows:
<TABLE>
<CAPTION>
                                               GROSS UNREALIZED
                                    AMORTIZED  -----------------    FAIR
                                       COST     GAINS    LOSSES    VALUE
                                    ---------- -------- -------- ----------
                                                (IN THOUSANDS)
<S>                                 <C>        <C>      <C>      <C>
DECEMBER 31, 1997
Available-for-sale:
  United States government and gov-
   ernment agencies and authorities $  239,613 $ 18,627 $    --  $  258,240
  Foreign governments                    1,044      --        29      1,015
  Corporate securities               2,273,474  216,056   70,484  2,419,046
  International bond securities        150,157    2,565   23,530    129,192
  Mortgage-backed securities         1,854,519   66,934    9,145  1,912,308
                                    ---------- -------- -------- ----------
    Total fixed maturities           4,518,807  304,182  103,188  4,719,801
  Equity securities--unaffiliated      421,672  134,558   14,575    541,655
  Equity securities--affiliated        115,769   29,214      --     144,983
                                    ---------- -------- -------- ----------
    Total equity securities            537,441  163,772   14,575    686,638
                                    ---------- -------- -------- ----------
      Total available-for-sale       5,056,248  467,954  117,763  5,406,439
Held-to maturity:
  Corporate securities                 893,407   59,850      752    952,505
  Mortgage-backed securities           194,905   10,817      --     205,722
                                    ---------- -------- -------- ----------
    Total held-to-maturity           1,088,312   70,667      752  1,158,227
                                    ---------- -------- -------- ----------
      Total                         $6,144,560 $538,621 $118,515 $6,564,666
                                    ========== ======== ======== ==========
DECEMBER 31, 1996
Available-for-sale:
  United States government and gov-
   ernment agencies and authorities $  302,820 $  2,397 $  6,756 $  298,461
  State, municipalities, and polit-
   ical subdivisions                    11,296      759      --      12,055
  Foreign governments                    1,926      --        54      1,872
  Corporate securities               2,450,126  115,846   19,554  2,546,418
  Mortgage-backed securities         1,792,807   64,834   42,365  1,815,276
                                    ---------- -------- -------- ----------
    Total fixed maturities           4,558,975  183,836   68,729  4,674,082
  Equity securities--unaffiliated      353,983  107,172    5,168    455,987
  Equity securities--affiliated         75,526   18,284      --      93,810
                                    ---------- -------- -------- ----------
    Total equity securities            429,509  125,456    5,168    549,797
                                    ---------- -------- -------- ----------
      Total available-for-sale       4,988,484  309,292   73,897  5,223,879
Held-to maturity:
  Corporate securities                 904,994   50,187    3,130    952,051
  Mortgage-backed securities           220,644    7,833    1,416    227,061
                                    ---------- -------- -------- ----------
    Total held-to-maturity           1,125,638   58,020    4,546  1,179,112
                                    ---------- -------- -------- ----------
      Total                         $6,114,122 $367,312 $ 78,443 $6,402,991
                                    ========== ======== ======== ==========
</TABLE>
 
 
                                                                              69
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(3)INVESTMENTS (CONTINUED)
 
  The amortized cost and estimated fair value of fixed maturity securities at
December 31, 1997 by contractual maturity, are shown below. Expected maturities
will differ from contractual maturities because borrowers may have the right to
call or prepay obligations with or without call or prepayment penalties.
 
<TABLE>
<CAPTION>
                                   AVAILABLE-FOR-SALE     HELD-TO-MATURITY
                                  --------------------- ---------------------
                                  AMORTIZED     FAIR    AMORTIZED     FAIR
                                     COST      VALUE       COST      VALUE
                                  ---------- ---------- ---------- ----------
                                                (IN THOUSANDS)
<S>                               <C>        <C>        <C>        <C>
Due in one year or less           $   47,387 $   44,198 $    2,982 $    3,004
Due after one year through five
 years                               335,383    354,936    120,846    124,461
Due after five years through ten
 years                             1,355,665  1,416,149    317,689    337,322
Due after ten years                  925,853    992,210    451,890    487,718
                                  ---------- ---------- ---------- ----------
                                   2,664,288  2,807,493    893,407    952,505
Mortgage-backed securities         1,854,519  1,912,308    194,905    205,722
                                  ---------- ---------- ---------- ----------
  Total                           $4,518,807 $4,719,801 $1,088,312 $1,158,227
                                  ========== ========== ========== ==========
</TABLE>
 
  At December 31, 1997 and 1996, bonds and certificates of deposit with a
carrying value of $8,000,000 and $12,934,000, respectively, were on deposit
with various regulatory authorities as required by law.
  Allowances for credit losses on investment are reflected on the consolidated
balance sheets as a reduction of the related assets and were as follows:
 
<TABLE>
<CAPTION>
                         1997    1996
                        ------- -------
                        (IN THOUSANDS)
<S>                     <C>     <C>
Mortgage loans          $ 1,500 $ 1,895
Foreclosed real estate      --      535
Investment real estate    2,248   2,529
                        ------- -------
  Total                 $ 3,748 $ 4,959
                        ======= =======
</TABLE>
 
  At December 31, 1997, the recorded investment in mortgage loans that were
considered to be impaired was $18,400 before allowance for credit losses. These
impaired loans, due to adequate fair market value of underlying collateral, do
not have an allowance for credit losses.
  At December 31, 1996, the recorded investment in mortgage loans that were
considered to be impaired was $6,518,000 before allowance for credit losses.
Included in this amount is $2,225,000 of impaired loans, for which the related
allowance for credit losses is $395,000 and $4,293,000 of impaired loans that,
as a result of adequate fair market value of underlying collateral, do not have
an allowance for credit losses.
  In addition to the allowance for credit losses on impaired mortgage loans, a
general allowance for credit losses was established for potential impairments
in the remainder of the mortgage loan portfolio. The general allowance was
$1,500,000 at December 31, 1997 and 1996.
  Changes in the allowance for credit losses on mortgage loans were as follows:
 
<TABLE>
<CAPTION>
                               1997    1996    1995
                              ------  ------  ------
                                 (IN THOUSANDS)
<S>                           <C>     <C>     <C>
Balance at beginning of year  $1,895  $1,711  $2,449
Provision for credit losses      --      381     127
Charge-offs                     (395)   (197)   (865)
                              ------  ------  ------
  Balance at end of year      $1,500  $1,895  $1,711
                              ======  ======  ======
</TABLE>
 
70
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(3)INVESTMENTS (CONTINUED)
 
  Below is a summary of interest income on impaired mortgage loans.
 
<TABLE>
<CAPTION>
                                                          1997   1996   1995
                                                         ------ ------ -------
                                                            (IN THOUSANDS)
<S>                                                      <C>    <C>    <C>
Average impaired mortgage loans                          $3,268 $9,375 $15,845
Interest income on impaired mortgage loans--contractual     556  1,796   1,590
Interest income on impaired mortgage loans--collected       554  1,742   1,515
</TABLE>
 
(4) NOTES RECEIVABLE
 
In connection with the Company's planned construction of an additional home
office facility in St. Paul, the Company entered into a loan contingency
agreement with the Housing and Redevelopment Authority of the City of Saint
Paul, Minnesota (HRA) in November, 1997. A maximum of $15 million in funds is
available under this loan for condemnation and demolition of the Company's
proposed building site. The note bears interest at a rate of 8.625%, with
principal payments commencing February 2004 and a maturity date of August 2025.
Interest payments are accrued and are payable February and August of each year
commencing February 2001. All principal and interest payments are due only to
the extent of available tax increments. As of December 31, 1997 HRA has drawn
$286,775 on this loan contingency agreement and accrued interest of $1,374.
 
(5) NET FINANCE RECEIVABLES
 
Finance receivables as of December 31 were as follows:
 
<TABLE>
<CAPTION>
                                       1997      1996
                                     --------  --------
                                      (IN THOUSANDS)
<S>                                  <C>       <C>
Direct installment loans             $183,424  $204,038
Retail installment notes               20,373    30,843
Retail revolving credit                25,426    24,863
Credit card receivables                   --      3,541
Accrued interest                        3,116     3,404
                                     --------  --------
 Gross receivables                   $232,339  $266,689
Allowance for uncollectible amounts   (20,545)   (7,497)
                                     --------  --------
  Finance receivables, net           $211,794  $259,192
                                     ========  ========
</TABLE>
 
  Direct installment loans at December 31, 1997 consisted of $83,836,000 of
discount basis loans (net of unearned finance charges) and $99,588,00 of
interest-bearing loans. As of December 31, 1996, discount basis loans amounted
to $93,127,000 and interest-bearing loans amounted to $110,911,000. Direct
installment loans generally have a maximum term of 84 months. Retail
installment notes are principally discount basis, arise from the sale of
household appliances, furniture, and sundry services, and generally have a
maximum term of 48 months. Direct installment loans included approximately $65
million and $69 million of real estate secured loans at December 31, 1997 and
1996, respectively. Revolving credit loans included approximately $24 million
and $23 million of real estate secured loans at December 31, 1997 and 1996,
respectively. Experience has shown that a substantial portion of finance
receivables will be renewed, converted or paid in full prior to maturity.
  Principal cash collections of direct installment loans amounted to
$90,940,000, $92,438,000 and $75,865,000 and the percentage of these cash
collections to the average net balances were 47%, 48%, and 47% for the years
ended December 31, 1997, 1996 and 1995, respectively.
 
                                                                              71
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(5) NET FINANCE RECEIVABLES (CONTINUED)
 
  Changes in the allowance for uncollectible amounts for the years ended
December 31 were as follows:
 
<TABLE>
<CAPTION>
                                1997      1996     1995
                              --------  --------  -------
                                   (IN THOUSANDS)
<S>                           <C>       <C>       <C>
Balance at beginning of year  $  7,497  $  6,377  $ 5,360
Provision for credit losses     28,206    10,086    6,140
Charge-offs                    (17,869)  (11,036)  (6,585)
Recoveries                       2,711     2,070    1,462
                              --------  --------  -------
  Balance at end of year      $ 20,545  $  7,497  $ 6,377
                              ========  ========  =======
</TABLE>
 
  At December 31, 1997, the recorded investment in certain direct installment
loans and direct revolving credit loans were considered to be impaired. The
balances of such loans at December 31, 1997 and the related allowance for
credit losses was as follows:
 
<TABLE>
<CAPTION>
                                     INSTALLMENT REVOLVING
                                        LOANS     CREDIT   TOTAL
                                     ----------- --------- ------
                                            (IN THOUSANDS)
<S>                                  <C>         <C>       <C>
Balances at December 31, 1997          $7,723     14,492   22,215
Related allowance for credit losses    $4,200      7,772   11,972
</TABLE>
 
  All loans deemed to be impaired are placed on a non-accrual status. No
accrued or unpaid interest was recognized on impaired loans during 1997. The
average balances of impaired loans during the year ended December 31, 1997 was
$7,397,000 and $12,793,000, respectively, for installment basis and revolving
credit direct loans.
  There were no material commitments to lend additional funds to customers
whose loans were classified as non-accrual at December 31, 1997.
 
(6) INCOME TAXES
 
Income tax expense varies from the amount computed by applying the federal
income tax rate of 35% to income from operations before taxes. The significant
components of this difference were as follows:
 
<TABLE>
<CAPTION>
                                                  1997     1996     1995
                                                 -------  -------  -------
                                                     (IN THOUSANDS)
<S>                                              <C>      <C>      <C>
Computed tax expense                             $93,337  $69,753  $74,631
Difference between computed and actual tax ex-
 pense:
  Dividends received deduction                    (5,573)  (2,534)  (1,710)
  Special tax on mutual life insurance companies   3,341    2,760   10,134
  MF&C sale                                       (4,408)     --       --
  Foundation gain                                 (4,042)  (1,260)    (540)
  Tax credits                                     (3,600)  (3,475)  (1,840)
  Expense adjustments and other                   (2,275)   3,533    2,699
                                                 -------  -------  -------
    Total tax expense                            $76,780  $68,777  $83,374
                                                 =======  =======  =======
</TABLE>
 
72
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
(6) INCOME TAXES (CONTINUED)
 
  The tax effects of temporary differences that give rise to the Company's net
deferred federal tax liability were as follows:
 
<TABLE>
<CAPTION>
                                                        1997     1996
                                                      -------- --------
                                                       (IN THOUSANDS)
<S>                                                   <C>      <C>
Deferred tax assets:
  Policyowner liabilities                             $ 14,374 $ 15,854
  Unearned fee income                                   49,274   43,232
  Pension and post-retirement benefits                  23,434   21,815
  Tax deferred policy acquisition costs                 73,134   58,732
  Net realized capital losses                            9,609    8,275
  Other                                                 20,524   19,229
                                                      -------- --------
    Gross deferred tax assets                          190,349  167,137
Deferred tax liabilities:
  Deferred policy acquisition costs                    201,611  206,331
  Real estate and property and equipment depreciation   11,165   10,089
  Basis difference on investments                       11,061    8,605
  Net unrealized capital gains                         122,876   81,339
  Other                                                  9,693   10,438
                                                      -------- --------
    Gross deferred tax liabilities                     356,406  316,802
                                                      -------- --------
      Net deferred tax liability                      $166,057 $149,665
                                                      ======== ========
</TABLE>
 
  A valuation allowance for deferred tax assets was not considered necessary as
of December 31, 1997 and 1996, because the Company believes that it is more
likely than not that the deferred tax assets will be realized through future
reversals of existing taxable temporary differences and future taxable income.
  Income taxes paid for the years ended December 31, 1997, 1996 and 1995, were
$97,721,000, $79,026,000 and $64,390,000, respectively.
 
                                                                              73
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(7) LIABILITY FOR UNPAID ACCIDENT AND HEALTH CLAIMS AND CLAIM ADJUSTMENT
EXPENSES
 
Activity in the liability for unpaid accident and health claims and claim
adjustment expenses is summarized as follows:
<TABLE>
<CAPTION>
                                  1997     1996     1995
                                -------- -------- --------
                                      (IN THOUSANDS)
<S>                             <C>      <C>      <C>
Balance at January 1            $416,910 $377,302 $349,311
  Less: reinsurance recoverable  102,161   80,333   61,624
                                -------- -------- --------
Net balance at January 1         314,749  296,969  287,687
                                -------- -------- --------
Incurred related to:
  Current year                   121,153  134,727  129,896
  Prior years                      7,809    4,821   (4,014)
                                -------- -------- --------
Total incurred                   128,962  139,548  125,882
                                -------- -------- --------
Paid related to:
  Current year                    51,275   51,695   47,620
  Prior years                     57,475   70,073   68,980
                                -------- -------- --------
Total paid                       108,750  121,768  116,600
                                -------- -------- --------
Net balance at December 31       334,961  314,749  296,969
  Plus: reinsurance recoverable  104,716  102,161   80,333
                                -------- -------- --------
Balance at December 31          $439,677 $416,910 $377,302
                                ======== ======== ========
</TABLE>
 
  The liability for unpaid accident and health claims and claim adjustment
expenses is included in future policy and contract benefits and pending policy
and contract claims on the consolidated balance sheets.
  As a result of changes in estimates of claims incurred in prior years, the
accident and health claims and claim adjustment expenses incurred increased
(decreased) by $7,809, $4,821 and ($4,014) in 1997, 1996 and 1995,
respectively. These amounts are the result of normal reserve development
inherent in the uncertainty of establishing the liability for unpaid accident
and health claims and claim adjustment expenses.
 
(8) EMPLOYEE BENEFIT PLANS
 
Pension Plans
The Company has noncontributory defined benefit retirement plans covering
substantially all employees and certain agents. Benefits are based upon years
of participation and the employee's average monthly compensation or the agent's
adjusted annual compensation. Plan assets are comprised of mostly stocks and
bonds, which are held in the general and separate accounts of the Company and
administered under group annuity contracts issued by the Company. The Company's
funding policy is to contribute annually the minimum amount required by
applicable regulations. The Company also has an unfunded noncontributory
defined benefit retirement plan, which provides certain employees with benefits
in excess of limits for qualified retirement plans.
  Net periodic pension cost for the years ended December 31 included the
following components:
 
<TABLE>
<CAPTION>
                                                   1997      1996      1995
                                                  -------  --------  --------
                                                       (IN THOUSANDS)
<S>                                               <C>      <C>       <C>
Service cost-benefits earned during the period    $ 6,462  $  6,019  $  5,294
Interest accrued on projected benefit obligation    9,640     8,541     7,935
Actual return on plan assets                       (9,575)  (12,619)  (18,061)
Net amortization and deferral                         656     4,698    11,811
                                                  -------  --------  --------
  Net periodic pension cost                       $ 7,183  $  6,639  $  6,979
                                                  =======  ========  ========
</TABLE>
 
74
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(8) EMPLOYEE BENEFIT PLANS (CONTINUED)
 
  The funded status for the Company's plans as of December 31 was calculated as
follows:
 
<TABLE>
<CAPTION>
                                           FUNDED PLANS      UNFUNDED PLANS
                                         ------------------  ----------------
                                           1997      1996     1997     1996
                                         --------  --------  -------  -------
                                                  (IN THOUSANDS)
<S>                                      <C>       <C>       <C>      <C>
Actuarial present value of benefit ob-
 ligations:
  Vested benefit obligation              $ 70,638  $ 61,328  $   --   $   --
  Non-vested benefit obligation            21,252    19,119    8,017    5,912
                                         --------  --------  -------  -------
    Accumulated benefit obligation       $ 91,890  $ 80,447  $ 8,017  $ 5,912
                                         ========  ========  =======  =======
Pension liability included in other li-
 abilities:
  Projected benefit obligation           $130,144  $117,836  $15,744  $12,576
  Plan assets at fair value               128,970   115,107      --       --
                                         --------  --------  -------  -------
  Plan assets less then projected bene-
   fit obligation                           1,174     2,729   15,744   12,576
  Unrecognized net gain (loss)              6,061     3,633   (4,229)  (2,332)
  Unrecognized prior service cost            (334)     (364)     --       --
  Unamortized transition asset (obliga-
   tion)                                    2,202     2,422   (7,682)  (8,451)
  Additional minimum liability                --        --     4,184    4,119
                                         --------  --------  -------  -------
    Net pension liability                $  9,103  $  8,420  $ 8,017  $ 5,912
                                         ========  ========  =======  =======
</TABLE>
 
  A weighted average discount rate of 7.5% and a weighted average rate of
increase in future compensation levels of 5.3% were used in determining the
actuarial present value of the projected benefit obligation at December 31,
1997 and 1996. The assumed long-term rate of return on plan assets was either
8.5% or 7.5%, depending on the plan.
 
Profit Sharing Plans
The Company also has profit sharing plans covering substantially all employees
and agents. The Company's contribution rate to the employee plan is determined
annually by the trustees of the Company and is applied to each participant's
prior year earnings. The Company's contribution to the agent plan is made as a
certain percentage, based upon years of service, applied to each agent's total
annual compensation. The Company recognized contributions to the plans during
1997, 1996 and 1995 of $7,173,000, $6,092,000 and $6,595,000, respectively.
Participants may elect to receive a portion of their contributions in cash.
 
Postretirement Benefits Other than Pensions
The Company also has unfunded postretirement plans that provide certain health
care and life insurance benefits to substantially all retired employees and
agents. Eligibility is determined by age at retirement and years of service
after age 30. Health care premiums are shared with retirees, and other cost-
sharing features include deductibles and co-payments.
 
  Components of net periodic postretirement benefit cost for the years ended
December 31 were as follows:
 
<TABLE>
<CAPTION>
                                                   1997    1996    1995
                                                  ------  ------  ------
                                                     (IN THOUSANDS)
<S>                                               <C>     <C>     <C>
Service cost-benefits earned during the period    $1,008  $1,011  $1,276
Interest accrued on projected benefit obligation   1,826   2,041   2,452
Amortization of prior service cost                  (526)   (513)   (513)
Amortization of net gain                            (480)   (177)    --
                                                  ------  ------  ------
  Net periodic postretirement benefit cost        $1,828  $2,362  $3,215
                                                  ======  ======  ======
</TABLE>
 
                                                                              75
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
(8) EMPLOYEE BENEFIT PLANS (CONTINUED)
 
  The accumulated postretirement benefit obligation and the accrued
postretirement benefit liability for the years ended December 31 were as
follows:
 
<TABLE>
<CAPTION>
                                                         1997    1996
                                                        ------- -------
                                                        (IN THOUSANDS)
<S>                                                     <C>     <C>
Accumulated postretirement benefit obligation
  Retirees                                              $ 9,333 $10,238
  Other fully eligible plan participants                  4,861   4,594
  Other active plan participants                          9,738   9,514
                                                        ------- -------
    Total accumulated postretirement benefit obligation  23,932  24,346
  Unrecognized prior service cost                         3,680   4,107
  Unrecognized net gain                                  11,290   9,880
                                                        ------- -------
    Accrued postretirement benefit liability            $38,902 $38,333
                                                        ======= =======
</TABLE>
 
  The discount rate used in determining the accumulated postretirement benefit
obligation for 1997 and 1996 was 7.5%. The 1997 net health care cost trend rate
was 8.5%, graded to 5.5% over 6 years, and the 1996 rate was 9.0%, graded to
5.5% over 7 years.
  The assumptions presented herein are based on pertinent information available
to management as of December 31, 1997 and 1996. Actual results could differ
from those estimates and assumptions. For example, increasing the assumed
health care cost trend rates by one percentage point in each year would
increase the postretirement benefit obligation as of December 31,1997 by
$4,323,000 and the estimated eligibility cost and interest cost components of
net periodic postretirement benefit costs for 1997 by $588,000.
 
 
(9) SALE OF SUBSIDIARY
 
On October 1, 1997, the Company sold Minnesota Fire and Casualty Company (MFC),
a wholly owned subsidiary to Harleysville Group, Inc. The Company received net
cash proceeds of approximately $33.5 million from the sale, and realized a gain
of approximately $14.5 million. HomePlus Insurance Company (HomePlus), a
previously wholly owned subsidiary of MFC, was excluded from the sale of
assets. In accordance with the agreement, prior to September 30,1997, MFC made
a distribution of private placement bonds to the Company with an amortized cost
of approximately $4.3 million and transferred all issued and outstanding shares
of HomePlus to the Company. The carrying value of the transferred shares was
approximately $5.8 million. Under an administrative services agreement with
MFC, the Company has retained MFC to provide financial and other services for
HomePlus.
 
(10) REINSURANCE
 
In the normal course of business, the Company seeks to limit its exposure to
loss on any single insured and to recover a portion of benefits paid by ceding
reinsurance to other insurance companies. To the extent that a reinsurer is
unable to meet its obligation under the reinsurance agreement, the Company
remains liable. The Company evaluates the financial condition of its reinsurers
and monitors concentrations of credit risk to minimize its exposure to
significant losses from reinsurer insolvencies. Allowances are established for
amounts deemed to be uncollectible.
  Reinsurance is accounted for over the life of the underlying reinsured
policies using assumptions consistent with those used to account for the
underlying policies.
 
76
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
(10) REINSURANCE (CONTINUED)
 
  The effect of reinsurance on premiums for the years ended December 31 was as
follows:
 
<TABLE>
<CAPTION>
                       1997      1996      1995
                     --------  --------  --------
                           (IN THOUSANDS)
<S>                  <C>       <C>       <C>
Direct premiums      $595,686  $615,098  $600,841
Reinsurance assumed    78,097    64,489    64,792
Reinsurance ceded     (58,530)  (67,228)  (61,863)
                     --------  --------  --------
  Net premiums       $615,253  $612,359  $603,770
                     ========  ========  ========
</TABLE>
 
  Reinsurance recoveries on ceded reinsurance contracts were $58,072,000,
$72,330,000 and $58,338,000 during 1997, 1996 and 1995 respectively.
 
(11) FAIR VALUE OF FINANCIAL INSTRUMENTS
 
The estimated fair value of the Company's financial instruments has been
determined using available market information as of December 31, 1997 and 1996.
Although management is not aware of any factors that would significantly affect
the estimated fair value, such amounts have not been comprehensively revalued
since those dates. Therefore, estimates of fair value subsequent to the
valuation dates may differ significantly from the amounts presented herein.
Considerable judgement is required to interpret market data to develop the
estimates of fair value. The use of different market assumptions and/or
estimation methodologies may have a material effect on the estimated fair value
amounts.
  Please refer to Note 2 for additional fair value disclosures concerning fixed
maturity securities, equity securities, mortgages and derivatives. The carrying
amounts for policy loans, cash, short term investments, and finance receivables
approximate the assets' fair values.
  The interest rates on the finance receivables outstanding as of December 31,
1997 and 1996, are consistent with the rates at which loans would currently be
made to borrowers of similar credit quality and for the same maturity; as such,
the carrying value of the finance receivables outstanding as of December 31,
1997 and 1996, approximate the fair value for those respective dates.
  The fair values of deferred annuities, annuity certain contracts, and other
fund deposits, which have guaranteed interest rates and surrender charges are
estimated to be the amount payable on demand as of December 31, 1997 and 1996
as those investments contracts have no defined maturity and are similar to a
deposit liability. The amount payable on demand equates to the account balance
less applicable surrender charges. Contracts without guaranteed interest rates
and surrender charges have fair values equal to their accumulation values plus
applicable market value adjustments. The fair values of guaranteed investment
contracts and supplementary contracts without life contingencies are calculated
using discounted cash flows, based on interest rates currently offered for
similar products with maturities consistent with those remaining for the
contracts being valued.
  Rates currently available to the Company for debt with similar terms and
remaining maturities are used to estimate the fair value of notes payable.
 
                                                                              77
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(11) FAIR VALUE OF FINANCIAL INSTRUMENTS (CONTINUED)
 
  The carrying amounts and fair values of the Company's financial instruments,
which were classified as assets as of December 31, were as follows:
 
<TABLE>
<CAPTION>
                                    1997                  1996
                            --------------------- ---------------------
                             CARRYING     FAIR     CARRYING     FAIR
                              AMOUNT     VALUE      AMOUNT     VALUE
                            ---------- ---------- ---------- ----------
                                          (IN THOUSANDS)
<S>                         <C>        <C>        <C>        <C>
Fixed maturity securities:
  Available-for-sale        $4,719,801 $4,719,801 $4,674,082 $4,674,082
  Held-to-maturity           1,088,312  1,158,227  1,125,638  1,179,112
Equity securities              686,638    686,638    549,797    549,797
Mortgage loans:
  Commercial                   506,860    527,994    432,198    445,976
  Residential                  154,477    158,334    176,610    180,736
Policy loans                   213,488    213,488    204,178    204,178
Short-term investments         112,352    112,352    126,372    126,372
Cash                            96,179     96,179     57,140     57,140
Finance receivables, net       211,794    211,794    259,192    259,192
Derivatives                      1,457      1,457      1,197      1,197
                            ---------- ---------- ---------- ----------
    Total financial assets  $7,791,358 $7,886,264 $7,606,404 $7,677,782
                            ========== ========== ========== ==========
</TABLE>
 
  The carrying amounts and fair values of the Company's financial instruments,
which were classified as liabilities as of December 31, were as follows:
 
<TABLE>
<CAPTION>
                                         1997                  1996
                                 --------------------- ---------------------
                                  CARRYING     FAIR     CARRYING     FAIR
                                   AMOUNT     VALUE      AMOUNT     VALUE
                                 ---------- ---------- ---------- ----------
                                               (IN THOUSANDS)
<S>                              <C>        <C>        <C>        <C>
Deferred annuities               $2,131,806 $2,112,301 $2,178,355 $2,152,636
Annuity certain contracts            55,431     57,017     52,636     53,962
Other fund deposits                 754,960    753,905    808,592    805,709
Guaranteed investment contracts       8,188      8,187     18,770     18,866
Supplementary contracts without
 life contingencies                  46,700     45,223     47,966     47,536
Notes payable                       298,000    302,000    319,000    325,974
                                 ---------- ---------- ---------- ----------
  Total financial liabilities    $3,295,085 $3,278,633 $3,425,319 $3,404,683
                                 ========== ========== ========== ==========
</TABLE>
 
(12) NOTES PAYABLE
 
In September 1995, the Company issued surplus notes with a face value of
$125,000,000, at 8.25%, due in 2025. The surplus notes are subordinate to all
current and future policyowners' interests, including claims, and indebtedness
of the Company. All payments of interest and principal on the notes are subject
to the approval of the Department of Commerce of the State of Minnesota. The
approved accrued interest was $3,008,000 as of December 31, 1997 and 1996. The
issuance costs of $1,357,000 are deferred and amortized over 30 years on
straight-line basis.
 
78
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
(12) NOTES PAYABLE (CONTINUED)
 
  Notes payable as of December 31 were as follows:
 
<TABLE>
<CAPTION>
                                                            1997     1996
                                                          -------- --------
                                                           (IN THOUSANDS)
<S>                                                       <C>      <C>
Corporate-surplus notes, 8.25%, 2025                      $125,000 $125,000
Consumer finance subsidiary-senior, 6.53%-8.77%, through
 2003                                                      173,000  194,000
                                                          -------- --------
  Total notes payable                                     $298,000 $319,000
                                                          ======== ========
</TABLE>
 
  At December 31, 1997, the aggregate minimum annual notes payable maturities
for the next five years were as follows: 1998, $31,000,000; 1999 $49,000,000;
2000 $33,000,000; 2001 $26,000,000; 2002 $22,000,000.
  Long-term borrowing agreements involving the consumer finance subsidiary
include provisions with respect to borrowing limitations, payment of cash
dividends on or purchases of common stock, and maintenance of liquid net worth
of $41,354,000. The consumer finance subsidiary was in compliance with all such
provisions at December 31, 1997.
  Interest paid on debt for the years ended December 31, 1997, 1996 and 1995,
was $18,197,000, $21,849,000 and $6,504,000, respectively.
 
(13) COMMITMENTS AND CONTINGENCIES
 
The Company is involved in various pending or threatened legal proceedings
arising out of the normal course of business. In the opinion of management, the
ultimate resolution of such litigation will not have a material adverse effect
on operations or the financial position of the Company.
  In the normal course of business, the Company seeks to limit its exposure to
loss on any single insured and to recover a portion of benefits paid by ceding
reinsurance to other insurance companies. To the extent that a reinsurer is
unable to meet its obligations under the reinsurance agreement, the Company
remains liable. The Company evaluates the financial condition of its reinsurers
and monitors concentrations of credit risk to minimize its exposure to
significant losses from reinsurer insolvencies. Allowances are established for
amounts deemed uncollectible.
  The Company has issued certain participating group annuity and group life
insurance contracts jointly with another life insurance company. The joint
contract issuer has liabilities related to these contracts of $279,978,000 as
of December 31, 1997. To the extent the joint contract issuer is unable to meet
its obligation under the agreement, the Company remains liable.
  The Company has long-term commitments to fund venture capital and real estate
investments totaling $139,774,000 as of December 31, 1997. The Company
estimates that $51,300,000 of these commitments will be invested in 1998, with
the remaining $88,474,000 invested over the next four years.
  As of December 31, 1997, the Company had committed to purchase bonds and
mortgage loans totaling $109,362,000 but had not completed the purchase
transactions.
  At December 31, 1997, the Company had guaranteed the payment of $73,100,000
in policyowner dividends and discretionary amounts payable in 1998. The Company
has pledged bonds, valued at $75,774,000 to secure this guarantee.
  The Company is contingently liable under state regulatory requirements for
possible assessments pertaining to future insolvencies and impairments of
unaffiliated insurance companies. The Company records a liability for future
guaranty fund assessments based upon known insolvencies, according to data
received from the National Organization of Life and Health Insurance Guaranty
Association. An asset is recorded for the amount of guaranty fund assessments
paid which can be recovered through future premium tax credits.
 
                                                                              79
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
(14) STATUTORY FINANCIAL DATA
 
The Company also prepares financial statements according to statutory
accounting practices prescribed or permitted by the Department of Commerce for
purposes of filing with the Department of Commerce, the National Association of
Insurance Commissioners and states in which the Company is licensed to do
business. Statutory accounting practices focus primarily on solvency and
surplus adequacy. Therefore, fundamental differences exist between statutory
and GAAP accounting, and their effects on income and policyowners' surplus are
illustrated below:
 
<TABLE>
<CAPTION>
                           POLICYOWNERS' SURPLUS           NET INCOME
                           ----------------------  ----------------------------
                              1997        1996       1997      1996      1995
                           ----------  ----------  --------  --------  --------
                                            (IN THOUSANDS)
<S>                        <C>         <C>         <C>       <C>       <C>
Statutory basis            $  870,688  $  682,886  $167,078  $115,797  $ 88,706
Adjustments:
  Deferred policy acquisi-
   tion costs                 576,030     589,517    19,430    15,312    29,822
  Net unrealized invest-
   ment gains                 199,637     111,575       --        --        --
  Statutory asset valua-
   tion reserve               242,100     240,474       --        --        --
  Statutory interest main-
   tenance reserve             24,169      24,707      (538)   (8,192)   12,976
  Premiums and fees de-
   ferred or receivable       (74,025)    (75,716)    2,175     1,587       497
  Change in reserve basis     108,105      98,406     9,699    20,114    12,382
  Separate accounts           (51,172)    (40,755)   (6,272)   (6,304)     (854)
  Unearned policy and con-
   tract fees                (126,477)   (121,843)  (12,825)   (2,530)   (4,410)
  Surplus notes              (125,000)   (125,000)      --        --        --
  Net deferred taxes         (166,057)   (149,665)    7,832      (744)  (11,995)
  Nonadmitted assets           32,611      31,531       --        --        --
  Policyowner dividends        60,036      57,765     2,708       502     4,660
  Other                       (33,960)    (25,454)      609    (5,024)   (1,925)
                           ----------  ----------  --------  --------  --------
    As reported in the
     accompanying
     consolidated
     financial statements  $1,536,685  $1,298,428  $189,896  $130,518  $129,859
                           ==========  ==========  ========  ========  ========
</TABLE>
 
80
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
 
                                   SCHEDULE I
 
       SUMMARY OF INVESTMENTS--OTHER THAN INVESTMENTS IN RELATED PARTIES
 
                               DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                                                                   AS SHOWN
                                                       MARKET   ON THE BALANCE
TYPE OF INVESTMENT                         COST(3)     VALUE       SHEET(1)
- ------------------                        ---------- ---------- --------------
                                                     (IN THOUSANDS)
<S>                                       <C>        <C>        <C>
Bonds:
  United States government and government
   agencies and authorities               $  239,613 $  258,240   $  258,240
  Foreign governments                          1,044      1,015        1,015
  Public utilities                           385,228    406,920      398,887
  Mortgage-backed securities               2,049,424  2,118,030    2,107,213
  All other corporate bonds                2,931,810  3,093,823    3,042,758
                                          ---------- ----------   ----------
    Total bonds                            5,607,119  5,878,028    5,808,113
                                          ---------- ----------   ----------
Equity securities:
  Common stocks:
    Public utilities                           7,732     10,090       10,090
    Banks, trusts and insurance companies     37,217     47,120       47,120
    Industrial, miscellaneous and all
     other                                   354,317    460,170      460,170
  Nonredeemable preferred stocks              22,406     24,275       24,275
                                          ---------- ----------   ----------
      Total equity securities                421,672    541,655      541,655
                                          ---------- ----------   ----------
Mortgage loans on real estate                661,337     xxxxxx      661,337
Real estate(2)                                39,964     xxxxxx       39,964
Policy loans                                 213,488     xxxxxx      213,488
Other long-term investments                  216,838     xxxxxx      216,838
Short-term investments                       112,352     xxxxxx      112,352
                                          ---------- ----------   ----------
      Total                                1,243,979        --    $1,243,979
                                          ---------- ----------   ----------
Total investments                         $7,272,770 $6,419,683   $7,593,747
                                          ========== ==========   ==========
</TABLE>
- -------
(1) Amortized cost for bonds classified as held-to-maturity and fair value for
    common stocks and bonds classified as available-for-sale.
(2) The carrying value of real estate acquired in satisfaction of indebtedness
    is $-0-.
(3) Original cost for equity securities and original cost reduced by repayments
    and adjusted for amortization of premiums or accrual of discounts for bonds
    and other investments.
 
                                                                              81
<PAGE>
 
 THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
                                  SCHEDULE III
                      SUPPLEMENTARY INSURANCE INFORMATION
                                 (IN THOUSANDS)
<TABLE>
<CAPTION>
                                   AS OF DECEMBER 31,                 
                   ----------------------------------------------------
                               FUTURE POLICY                          
                    DEFERRED      BENEFITS                OTHER POLICY
                     POLICY    LOSSES, CLAIMS              CLAIMS AND 
                   ACQUISITION AND SETTLEMENT  UNEARNED     BENEFITS  
SEGMENT               COSTS     EXPENSES(1)   PREMIUMS(2)   PAYABLE   
- -------            ----------- -------------- ----------- -------------
                                    (IN THOUSANDS)
<S>                <C>         <C>            <C>         <C>         
1997:                                                                 
 Life insurance     $434,012     $2,229,396    $166,704     $42,627   
 Accident and                                                         
 health insurance     70,593        466,109      34,250      17,153   
 Annuity              71,425      3,266,965         --        4,576   
 Property and                                                         
 liability                                                            
 insurance               --             280       1,116         --    
                    --------     ----------    --------     -------   
                    $576,030     $5,962,750    $202,070     $64,356   
                    ========     ==========    ========     =======   
1996:                                                                 
 Life insurance     $456,461     $2,123,148    $149,152     $51,772   
 Accident and                                                         
 health insurance     62,407        437,118      33,770      18,774   
 Annuity              70,649      3,360,614         --           31   
 Property and                                                         
 liability                                                            
 insurance               --          27,855      24,189         --    
                    --------     ----------    --------     -------   
                    $589,517     $5,948,735    $207,111     $70,577   
                    ========     ==========    ========     =======   
1995:                                                                 
 Life insurance     $430,829     $2,009,154    $151,864     $41,212   
 Accident and                                                         
 health insurance     55,888        400,950      34,847      14,567   
 Annuity              53,015      3,401,760         --           33   
 Property and                                                         
 liability                                                            
 insurance               --          30,117      23,783         --    
                    --------     ----------    --------     -------   
                    $539,732     $5,841,981    $210,494     $55,812   
                    ========     ==========    ========     =======   
</TABLE>
<TABLE>
<CAPTION>
                                      FOR THE YEARS ENDED DECEMBER 31,
                   ----------------------------------------------------------------------
                                                        AMORTIZATION
                                           BENEFITS,    OF DEFERRED
                                 NET     CLAIMS, LOSSES    POLICY      OTHER
                    PREMIUM   INVESTMENT AND SETTLEMENT ACQUISITION  OPERATING  PREMIUMS
SEGMENT            REVENUE(3)   INCOME      EXPENSES       COSTS     EXPENSES  WRITTEN(4)
- -------            ---------- ---------- -------------- ------------ --------- ----------
                                          (IN THOUSANDS)
<S>                <C>        <C>        <C>            <C>          <C>       <C>
1997:              
 Life insurance     $576,468   $247,267     $476,747      $102,473   $345,938
 Accident and      
 health insurance    205,869     40,343       87,424         9,451    101,960
 Annuity              64,637    261,768      242,738        16,252    129,263
 Property and      
 liability         
 insurance            40,316      4,395       33,773           --      13,146    43,376
                    --------   --------     --------      --------   --------   -------
                    $887,290   $553,773     $840,682      $128,176   $590,307   $43,376
                    ========   ========     ========      ========   ========   =======
1996:              
 Life insurance     $568,874   $223,762     $478,228      $ 97,386   $290,525
 Accident and      
 health insurance    160,097     34,202       96,743        14,017     87,222
 Annuity              79,245    267,473      243,387        14,575    111,366
 Property and      
 liability         
 insurance            50,109      5,550       36,933           --      19,033    50,515
                    --------   --------     --------      --------   --------   -------
                    $858,325   $530,987     $855,291      $125,978   $508,146   $50,515
                    ========   ========     ========      ========   ========   =======
1995:              
 Life insurance     $540,353   $203,487     $454,299      $ 80,896   $266,090
 Accident and      
 health insurance    153,505     33,358       93,482        11,448     83,345
 Annuity              74,899    272,499      260,854        12,596     86,716
 Property and      
 liability         
 insurance            49,216      5,703       33,563           --      18,090    51,133
                    --------   --------     --------      --------   --------   -------
                    $817,973   $515,047     $842,198      $104,940   $454,241   $51,133
                    ========   ========     ========      ========   ========   =======
</TABLE>
- -----
(1) Includes policy and contract account balances
(2) Includes unearned policy and contract fees
(3) Includes policy and contract fees
(4) Applies only to property and liability insurance
 
82
<PAGE>
 
                   THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY AND SUBSIDIARIES
                                  SCHEDULE IV
 
                                  REINSURANCE
 
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
<TABLE>
<CAPTION>
                                                                            PERCENTAGE
                                        CEDED TO     ASSUMED                OF AMOUNT
                                          OTHER    FROM OTHER      NET      ASSUMED TO
                          GROSS AMOUNT  COMPANIES   COMPANIES     AMOUNT       NET
                          ------------ ----------- ----------- ------------ ----------
                                                 (IN THOUSANDS)
<S>                       <C>          <C>         <C>         <C>          <C>
1997:
 Life insurance in force  $118,345,796 $14,813,351 $29,341,332 $132,873,777    22.1%
                          ============ =========== =========== ============
 Premiums:
   Life insurance         $    340,984 $    30,547 $    63,815 $    374,252    17.1%
   Accident and health
    insurance                  175,647      16,332       1,310      160,625     0.8%
   Annuity                      40,060          --          --       40,060      --
   Property and liability
    insurance                   38,995      11,651      12,972       40,316    32.2%
                          ------------ ----------- ----------- ------------
     Total premiums       $    595,686 $    58,530 $    78,097 $    615,253    12.7%
                          ============ =========== =========== ============
1996:
 Life insurance in force  $116,445,975 $15,164,764 $22,957,287 $124,238,498    18.5%
                          ============ =========== =========== ============
 Premiums:
   Life insurance         $    347,056 $    45,988 $    63,044 $    364,112    17.3%
   Accident and health
    insurance                  174,219      15,511       1,389      160,097     0.9%
   Annuity                      38,041          --          --       38,041      --
   Property and liability
    insurance                   55,782       5,729          56       50,109     0.1%
                          ------------ ----------- ----------- ------------
     Total premiums       $    615,098 $    67,228 $    64,489 $    612,359    10.5%
                          ============ =========== =========== ============
1995:
 Life insurance in force  $106,228,277 $15,620,303 $24,289,241 $114,897,215    21.1%
                          ============ =========== =========== ============
 Premiums:
   Life insurance         $    342,433 $    44,778 $    62,169 $    359,824    17.3%
   Accident and health
    insurance                  163,412      12,296       2,389      153,505     1.6%
   Annuity                      41,225          --          --       41,225      --
   Property and liability
    insurance                   53,771       4,789         234       49,216     0.5%
                          ------------ ----------- ----------- ------------
     Total premiums       $    600,841 $    61,863 $    64,792 $    603,770    10.7%
                          ============ =========== =========== ============
</TABLE>
 
                                                                              83

<PAGE>

                                     PART C

                                OTHER INFORMATION
<PAGE>

                    Minnesota Mutual Variable Annuity Account

                   Cross Reference Sheet to Other Information


Form N-4

Item Number    Caption in Other Information

     24.       Financial Statements and Exhibits

     25.       Directors and Officers of the Depositor

     26.       Persons Controlled by or Under Common Control with the Depositor
               or Registrant

     27.       Number of Contract Owners

     28.       Indemnification

     29.       Principal Underwriters

     30.       Location of Accounts and Records

     31.       Management Services

     32.       Undertakings
<PAGE>

PART C.        OTHER INFORMATION

ITEM 24.  FINANCIAL STATEMENTS AND EXHIBITS

   
     (a)  Audited Financial Statements of Minnesota Mutual Variable Annuity
          Account for the fiscal year ended December 31, 1997, are included in
          Part B of this filing and consist of the following:
    

          1.  Independent Auditors' Report 

          2.  Statement of Assets and Liabilities.

          3.  Statement of Operations.

          4.  Statement of Changes in Net Assets.

          5.  Notes to Financial Statements.

   
     (b)  Audited Financial Statements of the Depositor, The Minnesota Mutual
          Life Insurance Company, for the fiscal year ended December 31, 1997,
          are included in Part B of this filing and consist of the following:
    

          1.   Independent Auditors' Report - The Minnesota Mutual Life
               Insurance Company.

   
          2.   Consolidated Balance Sheets - The Minnesota Mutual Life Insurance
               Company.
    

   
          3.   Consolidated Statements of Operations and Policyowners' Surplus -
               The Minnesota Mutual Life Insurance Company.
    

   
          4.   Consolidated Statements of Cash Flows - The Minnesota Mutual Life
               Insurance Company.
    

   
          5.   Notes to Consolidated Financial Statements - The Minnesota Mutual
               Life Insurance Company.
    

          6.   Summary of Investments-Other than Investments in Related
               Parties - The Minnesota Mutual Life Insurance Company.

          7.   Supplementary Insurance Information - The Minnesota Mutual Life
               Insurance Company.

          8.   Reinsurance - The Minnesota Mutual Life Insurance Company.

     (c)  Exhibits

          1.   The Resolution of The Minnesota Mutual Life Insurance Company's
               Executive Committee of its Board of Trustees establishing the
               Variable Annuity Account, previously filed as Exhibit (c)1. to 
               Registrant's Form N-4, File Number 33-62147, is hereby
               incorporated by reference.

          2.   Not applicable.

          3.   (a)  The Distribution Agreement between The Minnesota Mutual Life
                    Insurance Company and MIMLIC Sales Corporation, previously
                    filed as Exhibit (c)3.(a) to Registrant's Form N-4, File
                    Number 33-62147, is hereby incorporated by reference.

               (b)  Dealer Selling Agreement, previously filed as Exhibit
                    (c)3.(b) to Registrant's Form N-4, File Number 33-62147, is
                    hereby incorporated by reference.
<PAGE>

          4.   (a)  The Immediate Variable Annuity Contract, form 95-9326,
                    previously filed as Exhibit (c)4.(a) to Registrant's 
                    Form N-4, File Number 33-62147, Pre-Effective Amendment
                    Number 1, is hereby incorporated by reference.

               (b)  The Immediate Variable Annuity Contract (Unisex), form
                    95-9327, previously filed as Exhibit (c)4.(b) to 
                    Registrant's Form N-4, File Number 33-62147, Pre-
                    Effective Amendment Number 1, is hereby incorporated 
                    by reference.

   
               (c)  The Individual Retirement Annuity (IRA) Agreement, SEP, 
                    Traditional IRA and Roth-IRA, form 97-9418.
    
   
               (d)  The Individual Retirement Annuity, SIMPLE - (IRA) 
                    Agreement, form 98-9431.
    
   
               (e)  The Qualified Plan Agreement, form 88-9176 Rev. 8-93, 
                    previously filed as Exhibit (c)4.(d) to Registrant's Form 
                    N-4, File Number 33-62147, is hereby incorporated by 
                    reference.
    
   
               (f)  Tax Sheltered Annuity, form 88-9213, previously filed as 
                    Exhibit (c)4.(e) to Registrant's Form N-4, File Number
                    33-62147, is hereby incorporated by reference.
    
          5.   (a)  Application, form 95-9328, previously filed as 
                    Exhibit (c)5.(a) to Registrant's Form N-4, File Number 
                    33-62147, Pre-Effective Amendment Number 1, is hereby 
                    incorporated by reference.


          6.   Certificate of Incorporation and Bylaws.

               (a)  The Articles of Re-Incorporation of the Depositor, 
                    previously filed as Exhibit (c)6.(a) to Registrant's Form 
                    N-4, File Number 33-62147, is hereby incorporated by 
                    reference.

               (b)  The Bylaws of the Depositor, previously filed as Exhibit 
                    (c)6.(b) to Registrant's Form N-4, File Number 33-62147, 
                    is hereby incorporated by reference.

          7.   Not applicable.

          8.   Not applicable.

          9.   Opinion and consent of Donald F. Gruber, Esq.

         10.   Consent of KPMG Peat Marwick LLP.

         11.   Not applicable.

         12.   Not applicable.

         13.   Not applicable.
   
         14.   The Minnesota Mutual Life Insurance Company Power of Attorney To
               Sign Registration Statements.
    

Item 25.  Directors and Officers of the Depositor

Name and Principal            Positions and Offices       Positions and Offices
 Business Address             with Insurance Company          with Registrant
 ----------------             ----------------------          ---------------

Giulio Agostini               Trustee                         None
3M
3M Center - 
 Executive 220-14W-08
St. Paul, MN 55144-1000

Anthony L. Andersen           Trustee                         None
H. B. Fuller Company
2424 Territorial Road
St. Paul, MN 55114

   
Leslie S. Biller              Trustee                         None
Norwest Corporation
Sixth and Marquette
Minneapolis, MN 55479
    

John F. Bruder                Senior Vice President           None
The Minnesota Mutual Life
 Insurance Company
400 Robert Street North
St. Paul, MN 55101

   
Keith M. Campbell             Senior Vice President           None
The Minnesota Mutual Life
 Insurance Company
400 Robert Street North
St. Paul, MN 55101
    

   
Frederick P. Feuerherm         Vice President                  None
The Minnesota Mutual Life
 Insurance Company
400 Robert Street North
St. Paul, MN 55101
    

   
John F. Grundhofer            Trustee                         None
U.S. Bancorp
601 2nd Avenue South
Suite 2900
Minneapolis, MN  55402-4302
    

Harold V. Haverty             Trustee                         None
Deluxe Corporation
c/o 1 Woodduck Lane
North Oaks, MN  55127
<PAGE>

Robert E. Hunstad             Executive Vice President        None
The Minnesota Mutual Life
 Insurance Company
400 Robert Street North
St. Paul, MN 55101

James E. Johnson              Senior Vice President           None
The Minnesota Mutual Life     and Actuary
 Insurance Company
400 Robert Street North
St. Paul, MN 55101

   
Michael T. Kellett            Vice President                  None
The Minnesota Mutual Life
 Insurance Company
400 Robert Street North
St. Paul, MN 55101
    

   
David S. Kidwell, Ph.D.       Trustee                         None
The Curtis L. Carlson
 School of Management
University of Minnesota
321 19th Avenue South
Minneapolis, MN  55455
    

Reatha C. King, Ph.D.         Trustee                         None
General Mills Foundation
P.O. Box 1113
Minneapolis, MN  55440

Richard D. Lee                Vice President                  None
The Minnesota Mutual Life
 Insurance Company
400 Robert Street North
St. Paul, MN 55101

   
Robert M. Olafson             Vice President                  None
The Minnesota Mutual Life
 Insurance Company
400 Robert Street North
St. Paul, MN 55101
    

Dennis E. Prohofsky           Senior Vice President,          None
The Minnesota Mutual Life     General Counsel and
 Insurance Company            Secretary
400 Robert Street North
St. Paul, MN 55101

Thomas E. Rohricht            Trustee                         None
Doherty, Rumble & Butler
 Professional Association
2800 Minnesota World
 Trade Center
30 East Seventh Street
St. Paul, MN  55101-4999

Terry Tinson Saario, Ph.D.    Trustee                         None
3141 Dean Court, #1202
Minneapolis, MN 55416

Robert L. Senkler             Chairman, President and         None
The Minnesota Mutual Life     Chief Executive Officer
 Insurance Company
400 Robert Street North
St. Paul, MN  55101

Michael E. Shannon            Trustee                         None
Ecolab, Inc.
370 Wabasha Street
Ecolab Center
St. Paul, MN 55102

   
Gregory S. Strong             Senior Vice President and       None
The Minnesota Mutual Life     Chief Financial Officer
 Insurance Company
400 Robert Street North
St. Paul, MN 55101
    

Terrence M. Sullivan          Senior Vice President           None
The Minnesota Mutual Life
 Insurance Company
400 Robert Street North
St. Paul, MN 55101

Randy F. Wallake              Senior Vice President           None
The Minnesota Mutual Life
 Insurance Company
400 Robert Street North
St. Paul, MN 55101

William N. Westhoff           Senior Vice President           None
The Minnesota Mutual Life     and Treasurer
 Insurance Company
400 Robert Street North
St. Paul, MN 55101

Frederick T. Weyerhaeuser     Trustee                         None
Clearwater Investment Trust
332 Minnesota Street
 Suite W-2090
St. Paul, MN  55101-1308
<PAGE>

ITEM 26.  PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH THE DEPOSITOR OR
          REGISTRANT

Wholly-owned subsidiaries of The Minnesota Mutual Life Insurance Company:

   
          MIMLIC Asset Management Company
          The Ministers Life Insurance Company
          MIMLIC Corporation
          Northstar Life Insurance Company (New York)
          Robert Street Energy, Inc.
          HomePlus Insurance Company
    

   
Open-end registered investment company offering shares solely to separate
accounts of The Minnesota Mutual Life Insurance Company:
    

          Advantus Series Fund, Inc.

   
Wholly-owned subsidiaries of MIMLIC Asset Management Company:

          Ascend Financial Services, Inc.
          Advantus Capital Management, Inc.
    

Wholly-owned subsidiaries of MIMLIC Corporation:

          DataPlan Securities, Inc. (Ohio)
          MIMLIC Imperial Corporation
          MIMLIC Funding, Inc.
          MIMLIC Venture Corporation
          Personal Finance Company (Delaware)
          Wedgewood Valley Golf, Inc.
          Ministers Life Resources, Inc.
          Enterprise Holding Corporation
          HomePlus Insurance Agency, Inc.
          MCM Funding 1997-1, Inc.

<PAGE>

Wholly-owned subsidiaries of Enterprise Holding Corporation:

          Oakleaf Service Corporation
          Lafayette Litho, Inc.
          Financial Ink Corporation
          Concepts in Marketing Research Corporation
          Concepts in Marketing Services Corporation

   
Wholly-owned subsidiary of Ascend Financial Services, Inc.:

          MIMLIC Insurance Agency of Massachusetts, Inc. (Massachusetts)
    

Majority-owned subsidiaries of MIMLIC Imperial Corporation:

          J. H. Shoemaker Advisory Corporation (Tennessee)
          Consolidated Capital Advisors, Inc. (Tennessee)

   
Majority-owned subsidiary of Ascend Financial Services, Inc.:
    

          MIMLIC Insurance Agency of Ohio, Inc. (Ohio)

Fifty percent-owned subsidiary of MIMLIC Imperial Corporation:

          C.R.I. Securities, Inc.

Majority-owned subsidiaries of The Minnesota Mutual Life Insurance Company:

          MIMLIC Life Insurance Company (Arizona)
          MIMLIC Cash Fund, Inc.
          Advantus Cornerstone Fund, Inc.
          Advantus Enterprise Fund, Inc.
          Advantus International Balanced Fund, Inc.
          Advantus Venture Fund, Inc.
          Advantus Index 500 Fund, Inc.

   
Less than majority owned, but greater than 25% owned, subsidiary of The
Minnesota Mutual Life Insurance Company:

          Advantus Money Market Fund, Inc.
    

Less than 25% owned subsidiaries of The Minnesota Mutual Life Insurance Company:
   
          Advantus Spectrum Fund, Inc.
          Advantus Mortgage Securities Fund, Inc.
          Advantus Bond Fund, Inc.
          Advantus Horizon Fund, Inc.

          Unless indicated otherwise, parenthetically, each of the above
corporations is a Minnesota corporation.
    


ITEM 27.  NUMBER OF CONTRACT OWNERS

   
As of March 25, 1998, the number of holders of securities of the Registrant
of this class were as follows:
    

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

          Immediate Variable Annuity Contracts          90
    

<PAGE>

ITEM 28.  INDEMNIFICATION

The State of Minnesota has an indemnification statute (Minnesota Statutes
300.083), as amended, effective January 1, 1984, which requires indemnification
of individuals only under the circumstances described by the statute.  Expenses
incurred in the defense of any action, including attorneys' fees, may be
advanced to the individual after written request by the board of directors upon
receiving an undertaking from the individual to repay any amount advanced unless
it is ultimately determined that he or she is entitled to be indemnified by the
corporation as authorized by the statute and after a determination that the
facts then known to those making the determination would not preclude
indemnification.

Indemnification is required for persons made a part to a proceeding by reason of
their official capacity so long as they acted in good faith, received no
improper personal benefit and have not been indemnified by another organization.
In the case of a criminal proceeding, they must also have had no reasonable
cause to believe the conduct was unlawful.  In respect to other acts arising out
of official capacity:  (1) where the person is acting directly for the
corporation there must be a reasonable belief by the person that his or her
conduct was in the best interests of the corporation or, (2) where the person is
serving another organization or plan at the request of the corporation, the
person must have reasonably believed that his or her conduct was not opposed to
the best interests of the corporation.  In the case of persons not directors,
officers or policy-making employees, determination of eligibility for
indemnification may be made by a board-appointed committee of which a director
is a member.  For other employees, directors and officers, the determination of
eligibility is made by the Board or a committee of the Board, special legal
counsel, the shareholder of the corporation or pursuant to a judicial
proceeding.

Insofar as indemnification for liability arising under the Securities Act of
1933 may be permitted to directors, officers and controlling persons of The
Minnesota Mutual Life Insurance Company and Minnesota Mutual Variable Annuity
Account pursuant to the foregoing provisions, or otherwise, The Minnesota Mutual
Life Insurance Company and Minnesota Mutual Variable Annuity Account have been
advised that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable.  In the event that a claim for indemnification against
such liabilities (other than the payment by The Minnesota Mutual Life Insurance
Company and Minnesota Mutual Variable Annuity Account of expenses incurred or
paid by a director, officer or controlling person of The Minnesota Mutual Life
Insurance Company and Minnesota Mutual Variable Annuity Account in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer of controlling person in connection with the securities being
registered, The Minnesota Mutual Life Insurance Company and Minnesota Mutual
Variable Annuity Account will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

ITEM 29.  PRINCIPAL UNDERWRITERS

   
          (a)  The principal underwriter is Ascend Financial Services, Inc.
               Ascend Financial Services, Inc. is also the principal underwriter
               for eleven mutual funds (Advantus Horizon Fund, Inc.; Advantus 
               Spectrum Fund, Inc.; Advantus Money Market Fund, Inc.; Advantus 
               Mortgage Securities Fund, Inc.; Advantus Bond Fund, Inc.,; 
               Advantus Cornerstone Fund, Inc.; Advantus Enterprise Fund, Inc.; 
               Advantus International Balanced Fund, Inc.; Advantus Venture 
               Fund, Inc.; Advantus Index 500 Fund, Inc. and the MIMLIC Cash
    

<PAGE>

               Fund, Inc.) and for four additional registered separate accounts
               of The Minnesota Mutual Life Insurance Company, all of which
               offer annuity contracts and life insurance policies on a variable
               basis.

          (b)  Directors and Officers of Underwriter.

                      DIRECTORS AND OFFICERS OF UNDERWRITER

Name and Principal            Positions and Offices      Positions and Offices
 Business Address               with Underwriter             with Depositor
- ------------------            ---------------------      ---------------------
   
Robert E. Hunstad             Director                   Executive Vice
400 Robert Street North                                  President
St. Paul, Minnesota 55101
    

George I. Connolly            President, Chief           Director, Broker-Dealer
400 Robert Street North       Executive Officer
St. Paul, Minnesota 55101     and Director

   
Margaret Milosevich           Vice President, Chief      Manager
400 Robert Street North       Operations Officer,
St. Paul, Minnesota 55101     Treasurer and Secretary
    

   
D. Ann Degenshein             Vice President,            Manager
400 Robert Street North       Compliance
St. Paul, Minnesota 55101
    

   
Dennis E. Prohofsky           Secretary                  Senior Vice President,
400 Robert Street North                                  General Counsel and
St. Paul, Minnesota 55101                                Secretary
    

Thomas L. Clark               Assistant Secretary        Compliance Analyst
400 Robert Street North       and Assistant Treasurer     
St. Paul, Minnesota 55101     

Margaret A. Berg              Assistant Secretary        Manager
400 Robert Street North
St. Paul, Minnesota 55101

          (c)  All commissions and other compensation received by each principal
               underwriter, directly or indirectly, from the Registrant during
               the Registrant's last fiscal year for this class of securities:

   Name of     Net Underwriting    Compensation on
  Principal      Discounts and      Redemption or     Brokerage        Other
 Underwriter     Commissions        Annuitization    Commissions   Compensation
 -----------   ----------------    ---------------   -----------   ------------
   
Ascend           $15,067,613             ___             ___            ___
Financial
Services, Inc,
    

ITEM 30.  LOCATION OF ACCOUNTS AND RECORDS

The accounts, books and other documents required to be maintained by Section
31(a) of the 1940 Act and the Rules promulgated thereunder are in the physical
possession of The Minnesota Mutual Life Insurance Company, St. Paul, Minnesota
55101-2098.

ITEM 31.  MANAGEMENT SERVICES

None.
<PAGE>

ITEM 32.  UNDERTAKINGS

          (a)  The Registrant hereby undertakes to file a post-effective
               amendment to this registration statement as frequently as is
               necessary to ensure that the audited financial statements in the
               registration statement are never more than 16 months old for so
               long as payments under the Contracts may be accepted.

          (b)  The Registrant hereby undertakes to include as part of any
               application to purchase a contract offered by the prospectus a
               space that an applicant can check to request a Statement of
               Additional Information.

          (c)  The Registrant hereby undertakes to deliver any Statement of
               Additional Information and any financial statement required to be
               made available under this form promptly upon written or oral
               request.

          (d)  The Minnesota Mutual Life Insurance Company hereby represents 
               that, as to the variable annuity contract which is the subject of
               this Registration Statement, File Number 33-62147, the fees and 
               charges deducted under the contract, in the aggregate, are 
               reasonable in relation to the services rendered, the expenses 
               expected to be incurred and the risks assumed by The Minnesota 
               Mutual Life Insurance Company.

<PAGE>

                                  SIGNATURES

   
Pursuant to the requirements of the Securities Act of 1933 the Registrant, 
Minnesota Mutual Variable Annuity Account, certifies that it meets the 
requirements of Securities Act Rule 485(b) for effectiveness of the Amendment 
to the Registration Statement and has duly caused this Post-Effective 
Amendment to the Registration Statement to be signed on its behalf by the 
Undersigned, thereunto duly authorized, in the City of Saint Paul, and State 
of Minnesota, on the 24th day of April, 1998.
    

                                     MINNESOTA MUTUAL VARIABLE ANNUITY ACCOUNT
                                                    (Registrant)
 
                                 By: THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY
                                                     (Depositor)


                                 By 
                                    -------------------------------------------
                                                  Robert L. Senkler
                                           Chairman of the Board, President
                                             and Chief Executive Officer

   
Pursuant to the requirements of the Securities Act of 1933, the Depositor, 
The Minnesota Mutual Life Insurance Company, has duly caused this 
Post-Effective Amendment to the Registration Statement to be signed on its 
behalf by the undersigned, thereunto duly authorized, in the City of Saint 
Paul, and State of Minnesota, on the 24th day of April, 1998.
    

                                    THE MINNESOTA MUTUAL LIFE INSURANCE COMPANY


                                 By 
                                    -------------------------------------------
                                                 Robert L. Senkler
                                          Chairman of the Board, President
                                             and Chief Executive Officer


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

         Signature                      Title                       Date
         ---------                      -----                       ----
                                Chairman, President and         April 24, 1998
- -----------------------------   Chief Executive Officer
Robert L. Senkler

*                               Trustee
- -----------------------------
Giulio Agostini

*                               Trustee
- -----------------------------
Anthony L. Andersen

   
                               Trustee
- -----------------------------
John F. Grundhofer
    

<PAGE>

*                               Trustee
- -----------------------------
Harold V. Haverty

*                               Trustee
- -----------------------------
David S. Kidwell, Ph.D.

*                               Trustee
- -----------------------------
Reatha C. King, Ph.D.

*                               Trustee
- -----------------------------
Thomas E. Rohricht

*                               Trustee
- -----------------------------
Terry N. Saario, Ph.D.

*                               Trustee
- -----------------------------
Michael E. Shannon

*                               Trustee
- -----------------------------
Frederick T. Weyerhaeuser

   
                                Vice President                  April 24, 1998
- -----------------------------   (chief financial officer)
Gregory S. Strong
    

   
                                Vice President                  April 24, 1998
- -----------------------------  (chief accounting officer)
Gregory S. Strong            
    

   
                               Attorney-in-Fact                 April 24, 1998
- -----------------------------
*By Dennis E. Prohofsky
    

   
* Pursuant to power of attorney dated February 9, 1998, filed as Exhibit 14 to
this Registration Statement.
    

<PAGE>

                               EXHIBIT INDEX

Exhibit Number     Description of Exhibit
- --------------     ----------------------
   
    4(c)           The Individual Retirement Annuity Agreement, SEP, 
                   Traditional IRA and Roth-IRA, form 97-9418.

    4(d)           The Individual Retirement Annuity Agreement, SIMPLE-(IRA) 
                   Agreement, form 98-9431.

    9              Opinion and Consent of Donald F. Gruber, Esq.

   10              Consent of KPMG Peat Marwick LLP.

   14              The Minnesota Mutual Life Insurance Company Power of 
                   Attorney To Sign Registration Statements.
    

<PAGE>

Minnesota Mutual                                   INDIVIDUAL RETIREMENT ANNUITY
                                                                 (IRA) AGREEMENT
                                               SEP, TRADITIONAL IRA AND ROTH-IRA

WHAT DOES THIS AGREEMENT PROVIDE?

This agreement modifies the contract.  Provisions are changed before issue.  In
the event of a conflict between the provisions of this agreement and the
contract to which it is attached, the provisions of this agreement will control.
These changes will allow its use:  (a) with a Simplified Employee Pension
(herein "SEP"); and/or (b) as a Traditional Individual Retirement Annuity under
the Employee Retirement Income Security Act of 1974, as amended (herein "IRA");
and/or (c) as a Roth Individual Retirement Annuity under section 408A of the
Internal Revenue Code (herein "Roth-IRA").  The provisions that apply for
Traditional IRAs generally apply for SEPs, unless otherwise stated.

PURCHASE PAYMENTS

ARE TRADITIONAL IRA PURCHASE PAYMENTS LIMITED?

Yes.  Where the annuitant has an IRA, purchase payments may be limited.  An
annual cash purchase payment may not exceed the lesser of: (a) the amount of
compensation includible in gross income in any taxable year; or (b) $2,000, or
such other maximum amount as may be allowed by law.

Where an annuitant establishes an IRA along with a lower earning spouse,
purchase payments may be limited.  They are also limited if the annuitant is the
lower earning spouse.  The cash purchase payments for both annuities and
accounts must then be considered together.  They may not exceed the lesser of: 
(a) the amount of compensation includible in the working spouse's compensation
includible in gross income in any taxable year; or (b) $4,000, or such other
maximum amount as may be allowed by law.  In no event may an annuitant's annual
purchase payment exceed the cash amount of:  (a) $2,000; or (b) the maximum
annual contribution allowed for an IRA.

The annuitant's employer may make purchase payments under the annuitant's SEP up
to the lesser of 15% of the annuitant's compensation (exclusive of compensation
in excess of $160,000) or $30,000.  Other limits will apply if the annuitant's
IRA is used as part of a salary reduction SEP.

The annuitant, or the annuitant and his or her employer, are responsible for
determining the maximum purchase payments that may be made to an IRA.

ARE ROTH-IRA PURCHASE PAYMENTS LIMITED?

Yes.  Where the annuitant has a Roth-IRA, purchase payments may be limited. 
Annual purchase payments for all IRAs maintained by the annuitant may not exceed
the lesser of 100% of the annuitant's compensation includible in gross income in
any taxable year or $2,000.  The maximum purchase payment that an annuitant may
make to a Roth-IRA will depend on the amount of the annuitant's income.  The
maximum annual purchase payment allowed for a Roth-IRA is gradually reduced to
$0 between certain levels of Adjusted Gross Income ("AGI").  Adjusted gross
income is defined in section 408A(c)(3) of the Code and does not include amounts
transferred or rolled over to Traditional IRAs or Roth-IRAs.  In accordance with
section 408A(c)(3) of the Code, if an annuitant is single, the $2,000 limit is
phased out between AGI of $95,000 and $110,000; if an annuitant is married and
files a joint federal income tax return, it is phased out between $150,000 and
$160,000; and if an annuitant is married and 


                                                             Minnesota Mutual 1
<PAGE>

files a separate federal income tax return, it is phased out between $0 and
$10,000.

If an annuitant is married, the maximum purchase payment to the lower-earning
spouse's Spousal Roth-IRA may not exceed the lesser of:  (a) 100% of both
spouses' combined compensation minus any Roth-IRA or deductible Traditional IRA
contribution for the spouse with the higher compensation; or (b) $2,000.  A
maximum of $4,000 may be contributed to both spouses' Spousal Roth-IRAs. 
Purchase payments can be divided between the spouses' IRAs as the annuitant and
his spouse wish, but annual purchase payments to either one of the IRAs may not
exceed $2,000.

DO PURCHASE PAYMENT LIMITATIONS APPLY TO A ROLLOVER TO A ROTH-IRA?

No.  However, some individuals are not eligible to make rollover purchase
payments to a Roth-IRA.

A qualified rollover is a rollover contribution from another Roth-IRA or
Traditional individual retirement account or annuity in accordance with sections
408(d)(3), 408A(c)(3)(B), 408A(c)(6) and 408A(e) of the Code.  A cash purchase
payment may be the amount received by or on behalf of the annuitant as all or
any portion of a distribution which is a rollover contribution.  The
distribution may be one from a Traditional IRA or Roth-IRA, but may not be an
eligible rollover distribution from a tax-exempt employee's trust or a qualified
employee annuity plan.

A rollover or transfer from a Traditional IRA to a Roth-IRA will not be
permitted if the annuitant's AGI for the tax year exceeds $100,000 or if the
annuitant is married and files a separate federal income tax return.  A rollover
contribution must be received by us not later than 60 days after the annuitant
receives it.

DO PURCHASE PAYMENT LIMITATIONS APPLY TO A ROLLOVER?

No.  Limits on purchase payments to the contract do not apply with a rollover
contribution.  A rollover contribution is one within the meaning of sections
408(d)(3), 402(c), 403(a)(4), 403(b)(8), 408A(c)(3)(B), 408A(c)(6), 408A(d)(3)
or 408A(e) of the Internal Revenue Code (herein "Code") or a purchase payment
made in accordance with the terms of a SEP as described in section 408(k) of the
Code.  In that case, a cash purchase payment may be the amount received by or on
behalf of an annuitant as all or any portion of a distribution which is a
rollover contribution.  The distribution may be one from an individual
retirement account, annuity or bond plan; or an eligible rollover distribution
from a tax-exempt employee's trust; a qualified employee annuity plan; or such
other plan as may be allowed by law.  A Roth-IRA, however, may not receive a
rollover contribution directly from any plan other than a Traditional IRA or
another Roth-IRA.  In addition, a rollover or transfer from a Traditional IRA to
a Roth-IRA will not be permitted if the annuitant's AGI for the tax year exceeds
$100,000; or if the annuitant is married and files a separate federal income tax
return.  A rollover contribution must be received by us not later than 60 days
after the annuitant receives it.  A direct rollover payment may be made to us
from the plan making the distribution.  A purchase payment may not include
contributions to a tax-qualified plan made by the annuitant as an employee.

MAY THE ANNUITANT ALWAYS MAKE PURCHASE PAYMENTS?

No.  We will not accept purchase payments under this contract as of a date the
annuitant is not eligible for a SEP, IRA or Roth-IRA.


                                                             Minnesota Mutual 2
<PAGE>

In addition, no additional cash contributions or rollover contributions may be
accepted under the contract if:  (a) the owner dies before the distribution of
the entire interest in the contract; and (b) the beneficiary is not the
surviving spouse.

Purchase payments which exceed those allowed for an IRA or Roth-IRA may be
returned.  We will send them to the annuitant.  Return is without regard to the
provisions of this contract dealing with withdrawals.  Excess purchase payments
to a SEP may similarly be returned.  We will send them to the payer.

The annuitant has the sole responsibility for determining whether any purchase
payments meet applicable income tax requirements.

DISTRIBUTION PROVISIONS

ARE THERE RULES FOR THE TIMING OF DISTRIBUTIONS FROM AN IRA?

Yes.  The distribution of an annuitant's value shall be made in accordance with
the minimum distribution requirements of section 408(b)(3) of the Code and the
regulations thereunder, including the incidental death benefit provisions of
section 1.401(a)(9)-2 of the proposed regulations.  All of these rules are
incorporated herein by reference.

The annuitant's accumulation value, or withdrawal value if applicable, must be
distributed or begin to be distributed, by the annuitant's required beginning
date.  This is the April 1 following the calendar year in which the annuitant
reaches age 70 1/2.  For each succeeding year, a distribution must be made on or
before December 31.

The annuitant or, if applicable, the annuitant's beneficiary, is responsible for
assuring that the required minimum distribution is taken in a timely manner and
that the correct amount is distributed.

ARE THERE RULES FOR THE TIMING OF DISTRIBUTIONS FROM A ROTH-IRA WHILE THE
ANNUITANT IS ALIVE?

No.  The rules that apply to Traditional IRAs regarding required distributions
while an annuitant is alive do not apply to Roth-IRAs.

WHAT FORMS OF DISTRIBUTION ARE AVAILABLE FROM AN IRA?

By the required beginning date the annuitant may elect to have the accumulation
value, or withdrawal value if applicable, distributed.  It must be in one of the
following forms:

(a)  a single sum payment;

(b)  equal or substantially equal payments over the life of the annuitant;

(c)  equal or substantially equal payments over the joint lives of the annuitant
     and spouse;

(d)  equal or substantially equal payments over a specified period that may not
     be longer than the annuitant's life expectancy;

(e)  equal or substantially equal payments over a specified period that may not
     be longer than the joint life and last survivor expectancy of the annuitant
     and spouse.


                                                             Minnesota Mutual 3

<PAGE>

Options (b), (c), (d), and (e) can be satisfied by an annuity form elected by
the annuitant or by systematic withdrawal.

Payments must be made in periodic payments at intervals of no longer than one
year.  In addition, payments must be either nonincreasing or they may increase
only as provided in Q&A F-3 of section 1.401(a)(9)-1 of the Proposed Income Tax
Regulations or such final regulations as adopted.

ARE THERE SPECIAL RULES IF THE ANNUITANT DIES BEFORE THE ENTIRE VALUE IN THE
CONTRACT IS DISTRIBUTED?

Yes.  If the annuitant dies on or after the date distributions have begun, the
entire remaining value must be distributed at least as rapidly as under the
method of distribution being used as of the date of the annuitant's death.  If
the annuitant dies before distributions have begun, the entire remaining value
must be distributed as elected by the annuitant or, if the annuitant has not so
elected, as elected by the beneficiary or beneficiaries, as follows:

(a)  by December 31st of the year containing the fifth anniversary of the
     annuitant's death; or

(b)  in equal or substantially equal payments over the life or life expectancy
     of the designated beneficiary or beneficiaries starting by December 31st of
     the year following the year of the annuitant's death.  If, however, the
     beneficiary is the annuitant's surviving spouse, then this distribution is
     not required to begin until later.  It must begin by December 31st of the
     year in which the annuitant would have turned 70 1/2.  Minimum payments to
     the surviving spouse will be calculated in accordance with the applicable
     regulations.

ARE OTHER OPTIONS AVAILABLE TO A SPOUSE BENEFICIARY?

Yes.  In addition to the options discussed above, the spouse beneficiary has
other options.  He or she may elect to treat the annuitant's IRA or Roth-IRA as
his or her own.  This is done by either:  (a) not taking a distribution within
the required time period; or (b) making eligible IRA or Roth-IRA contributions
to it.

If the beneficiary chooses one of these options then he or she is the contract
owner.  He or she will assume all rights and privileges under the contract. 
This right is available only to the spouse of the annuitant.

HOW ARE LIFE EXPECTANCIES FOR CALCULATING REQUIRED DISTRIBUTIONS DETERMINED?

Life expectancy is computed by use of the expected return multiples in Table V
and VI of section 1.72-9 of the Income Tax Regulations.

Unless otherwise elected by the annuitant prior to the commencement of
distributions or, if applicable, by the surviving spouse where the annuitant
dies before distributions have commenced, life expectancies of an annuitant or
spouse beneficiary shall be recalculated annually for purposes of required
distributions.  An election not to recalculate shall be irrevocable and shall
apply to all subsequent years.  The life expectancy of a nonspouse beneficiary
shall not be recalculated.  Instead, life expectancy will be calculated using
the attained age of such beneficiary during the calendar year in which the
annuitant attains age 70 1/2; and payments for subsequent years shall be
calculated based on such life expectancy reduced by one for each calendar year
which has elapsed since the calendar year life expectancy was first calculated.


                                                             Minnesota Mutual 4

<PAGE>

In the case of a Roth-IRA, life expectancy will be calculated using the attained
age of such beneficiary in the calendar year distributions are required to
begin; and payments for subsequent years shall be calculated based on such life
expectancy reduced by one for each calendar year which has elapsed since the
calendar year life expectancy was first calculated.

MAY THE ANNUITANT SATISFY MINIMUM DISTRIBUTION REQUIREMENTS BY RECEIVING A
DISTRIBUTION FROM ANOTHER IRA?

Yes.  An annuitant may satisfy the minimum distribution requirements under
sections 408(a)(6) and 408(b)(3) of the Code by receiving a distribution from
one IRA that is equal to the amount required to satisfy the minimum distribution
requirements for two or more IRAs.  For this purpose, the owner of two or more
IRAs may use the "alternative method" described in Notice 88-38, to satisfy the
minimum distribution requirements described above.

WITHDRAWAL BENEFITS

ARE THERE LIMITS ON WITHDRAWALS FROM AN IRA?

Yes.  These limits apply to a partial withdrawal or a surrender of the contract
before the annuitant's age 59 1/2.  In that case, we must receive notice of the
intended disposition of the proceeds.  This will not apply if the annuitant dies
or is disabled.

ARE ALL WITHDRAWALS FROM ROTH-IRAS SUBJECT TO FEDERAL INCOME TAX?

No.  Purchase payments to Roth-IRAs are not deductible.  Any partial withdrawal
or surrender of the contract that includes a return of the annuitant's purchase
payment(s) will not be taxable to the extent it is attributable to the purchase
payment(s).  Earnings on the purchase payment(s) that are withdrawn are subject
to income tax if withdrawn within 5 years of the annuitant's first contribution
to a Roth-IRA or within 5 years of a rollover purchase payment.  In addition,
earnings will be subject to income tax if withdrawn before the annuitant reaches
age 59 1/2; unless the earnings are being withdrawn because of the annuitant's
death or disability or to pay first-time home buyer expenses.  If a withdrawal
is made, we must receive notice of the reason for withdrawal or intended
disposition of the proceeds.  Income tax will also not apply to distributions
made if the amount received is in excess of the allowed contribution and
returned to the annuitant before the required tax return filing date for that
year, together with any earned interest; or if the entire contract is received
and reinvested in a similar plan entitled to similar tax treatment.

MAY TAX PENALTIES APPLY FOR WITHDRAWALS FROM AN IRA?

Yes.  If a withdrawal or surrender occurs before the annuitant is age 59 1/2,
the annuitant may be subject to tax penalties.  These penalties are imposed
under the Code.  The annuitant may not be subject to tax penalties on amounts
received before age 59 1/2 if:  (1) the annuitant becomes disabled as defined by
the Code; (2) the amount received is in excess of the allowed deduction and
returned to the annuitant before the required tax return filing date for that
year, together with any earned interest; or (3) if the entire amount in the
contract is received and reinvested in a similar plan entitled to similar tax
treatment.  Additional exceptions to tax penalties may be available to the
annuitant.

We will not be liable for any tax penalties under this contract.  We are not
liable for penalties on amounts received or paid by us under this contract.  


                                                             Minnesota Mutual 5

<PAGE>

Any transaction treated by law as a contract distribution may be treated by us
as a complete contract surrender.

MAY TAX PENALTIES APPLY FOR WITHDRAWALS FROM ROTH-IRAS?

Yes.  Certain tax penalties are imposed under the Code.  If the annuitant owes
income tax on the amount withdrawn, the annuitant will also generally be subject
to a 10% premature withdrawal tax penalty on the amount on which the annuitant
paid income tax.  However, the tax penalties will not apply if earnings in the
Roth-IRA are withdrawn within 5 years of the annuitant's first contribution to a
Roth-IRA or within 5 years of a rollover purchase payment from a Traditional IRA
if the distribution is:  (1) made on or after the date on which the annuitant
attains age 59 1/2; (2) made because of the annuitant's disability or death; or
(3) made because the amount received was in excess of the allowed contribution
and returned to the annuitant before the required tax return filing date for
that year, together with any earned interest.  In addition, the tax penalty will
not apply to a distribution if the entire contract is received and reinvested in
a similar plan entitled to similar tax treatment.  Additional exceptions to tax
penalties may be available to the annuitant.

We will not be liable for any tax penalties under this contract.  We are not
liable for penalties on amounts received or paid by us under this contract.  Any
transaction treated by law as a contract distribution may be treated by us as a
complete contract surrender.

GENERAL INFORMATION

IS THE INTEREST OF THE ANNUITANT IN THIS CONTRACT NONFORFEITABLE?

Yes.  The entire interest of the annuitant in this contract is nonforfeitable. 
The annuitant shall possess the entire benefit provided by this contract.  This
contract is established for the exclusive benefit of the annuitant and his or
her beneficiaries.

HOW WILL DIVIDENDS BE APPLIED?

Dividends, if received, must be added to the accumulation value or applied to
increase annuity payments.

HOW WILL A REFUND OF PREMIUMS BE APPLIED?

Any refund of premiums (other than those attributable to excess purchase
payments) will be applied, before the close of the calendar year following the
year of the refund, toward the payment of future premiums or the purchase of
additional benefits.

MAY THIS AGREEMENT BE AMENDED?

Yes.  This contract may be amended as required to reflect any change in the
Code, regulations or published revenue rulings.  The annuitant will be deemed to
have consented to any such amendment.  We will promptly furnish any such
amendment to the annuitant.

This agreement is effective as of the original contract date unless a different
effective date is shown here.

Secretary

President


                                                             Minnesota Mutual 6

<PAGE>

Minnesota Mutual                                   INDIVIDUAL RETIREMENT ANNUITY
                                                        SIMPLE - (IRA) AGREEMENT

WHAT DOES THIS AGREEMENT PROVIDE?

This agreement modifies the contract.  Provisions are changed before issue.  In
the event of a conflict between the provisions of this agreement and the
contract to which it is attached, the provisions of this agreement will control.
These changes will allow its use with a Savings Incentive Match Plan for
Employees (herein "SIMPLE-IRA").

PURCHASE PAYMENTS

ARE SIMPLE-IRA PURCHASE PAYMENTS LIMITED?

Yes.  Where the annuitant's employer establishes a SIMPLE-IRA, purchase payments
may be limited.  The annual cash purchase payments must be the lesser of:  (a)
an amount equal to 100% of the compensation included in gross income in any
taxable year; or (b) $6,000, or such other maximum amount as may be allowed by
law.  Mandated employer purchase payments, in addition to your purchase
payments, can range from 0% to 3% of your annual compensation.

DO PURCHASE PAYMENT LIMITATIONS APPLY TO A ROLLOVER?

No.  Limits on purchase payments to the contract do not apply with a rollover
contribution.  A rollover contribution is one within the meaning of sections
408(d)(3)(G) of the Internal Revenue Code (herein "Code") or a purchase payment
made in accordance with the terms of a SIMPLE-IRA as described in section 408(p)
of the Code.  In that case, a cash purchase payment may be the amount received
by or on behalf of an annuitant as all or any portion of a distribution which is
a rollover contribution.  The distribution may be one as allowed by law.  A
rollover contribution must be received by us not later than 60 days after the
annuitant receives it.  A direct rollover payment may be made to us from the
plan making the distribution.  A purchase payment may not include contributions
to a tax-qualified plan made by the annuitant as an employee.

MAY THE ANNUITANT ALWAYS MAKE PURCHASE PAYMENTS?

No.  We will not accept purchase payments under this contract as of a date the
annuitant is not eligible for a SIMPLE-IRA.

In addition, no additional cash contributions or rollover contributions may be
accepted under the contract if:  (a) the owner dies before the distribution of
the entire interest in the contract; and (b) the beneficiary is not the
surviving spouse.

Purchase payments which exceed those allowed for a SIMPLE-IRA may be returned. 
We will send them to the payer.  Return is without regard to the provisions of
this contract dealing with withdrawals.

DISTRIBUTION PROVISIONS

ARE THERE RULES FOR THE TIMING OF DISTRIBUTIONS?

Yes.  The distribution of an annuitant's value shall be made in accordance with
the minimum distribution requirements of section 408(b)(3) of the Code and the
regulations thereunder, including the incidental death benefit provisions of
section 1.401(a)(9)-2 of the proposed regulations.  All of these rules are
incorporated herein by reference.


                                                             Minnesota Mutual 1

<PAGE>

The annuitant's accumulation value, or withdrawal value if applicable, must be
distributed or begin to be distributed, by the annuitant's required beginning
date.  This is the April 1 following the calendar year in which the annuitant
reaches age 70 1/2.  For each succeeding year, a distribution must be made on or
before December 31.

WHAT FORMS OF DISTRIBUTION ARE AVAILABLE?

By the required beginning date the annuitant may elect to have the accumulation
value, or withdrawal value if applicable, distributed.  It must be in one of the
following forms:

(a)  a single sum payment;

(b)  equal or substantially equal payments over the life of the annuitant;

(c)  equal or substantially equal payments over the joint lives of the annuitant
     and spouse;

(d)  equal or substantially equal payments over a specified period that may not
     be longer than the annuitant's life expectancy;

(e)  equal or substantially equal payments over a specified period that may not
     be longer than the joint life and last survivor expectancy of the annuitant
     and spouse.

Options (b), (c), (d), and (e) can be satisfied by an annuity form elected by
the annuitant or by systematic withdrawal.

Payments must be made in periodic payments at intervals of no longer than one
year.  In addition, payments must be either nonincreasing or they may increase
only as provided in Q&A F-3 of section 1.401(a)(9)-1 of the Proposed Income Tax
Regulations or such final regulations as adopted.

ARE THERE SPECIAL RULES IF THE ANNUITANT DIES BEFORE THE ENTIRE VALUE IN THE
CONTRACT IS DISTRIBUTED?

Yes.  If the annuitant dies on or after the date distributions have begun, the
entire remaining value must be distributed at least as rapidly as under the
method of distribution being used as of the date of the annuitant's death.  If
the annuitant dies before distributions have begun, the entire remaining value
must be distributed as elected by the annuitant or, if the annuitant has not so
elected, as elected by the beneficiary or beneficiaries, as follows:

(a)  by December 31st of the year containing the fifth anniversary of the
     annuitant's death; or

(b)  in equal or substantially equal payments over the life or life expectancy
     of the designated beneficiary or beneficiaries starting by December 31st of
     the year following the year of the annuitant's death.  If, however, the
     beneficiary is the annuitant's surviving spouse, then this distribution is
     not required to begin until later.  It must begin by December 31st of the
     year in which the annuitant would have turned 70 1/2.

ARE OTHER OPTIONS AVAILABLE TO A SPOUSE BENEFICIARY?

Yes.  In addition to the options discussed above, the spouse beneficiary has
other options.  He or she may elect to treat the annuitant's IRA as his or her


                                                             Minnesota Mutual 2

<PAGE>

own.  This is done by either:  (a) not taking a distribution within the required
time period; or (b) making eligible IRA contributions to it.

If the beneficiary chooses one of these options then he or she is the contract
owner.  He or she will assume all rights and privileges under the contract. 
This right is available only to the spouse of the annuitant.

HOW ARE LIFE EXPECTANCIES FOR CALCULATING REQUIRED DISTRIBUTIONS DETERMINED?

Life expectancy is computed by use of the expected return multiples in Table V
and VI of section 1.72-9 of the Income Tax Regulations.

Unless otherwise elected by the annuitant prior to the commencement of
distributions or, if applicable, by the surviving spouse where the annuitant
dies before distributions have commenced, life expectancies of an annuitant or
spouse beneficiary shall be recalculated annually for purposes of required
distributions.  An election not to recalculate shall be irrevocable and shall
apply to all subsequent years.  The life expectancy of a nonspouse beneficiary
shall not be recalculated.  Instead, life expectancy will be calculated using
the attained age of such beneficiary during the calendar year in which the
annuitant attains age 70 1/2, and payments for subsequent years shall be
calculated based on such life expectancy reduced by one for each calendar year
which has elapsed since the calendar year life expectancy was first calculated.

MAY THE ANNUITANT SATISFY MINIMUM DISTRIBUTION REQUIREMENTS BY RECEIVING A
DISTRIBUTION FROM ANOTHER IRA?

Yes.  An annuitant may satisfy the minimum distribution requirements under
sections 408(a)(6) and 408(b)(3) of the Code by receiving a distribution from
one IRA that is equal to the amount required to satisfy the minimum distribution
requirements for two or more IRAs.  For this purpose, the owner of two or more
IRAs may use the "alternative method" described in Notice 88-38, to satisfy the
minimum distribution requirements described above.

WITHDRAWAL BENEFITS

ARE THERE LIMITS ON WITHDRAWALS?

Yes.  These limits apply to a partial withdrawal or a surrender of the contract
before the annuitant's age 59 1/2.  In that case, we must receive notice of the
intended disposition of the proceeds.  This will not apply if the annuitant dies
or is disabled.

MAY TAX PENALTIES APPLY?

Yes.  If a withdrawal or surrender occurs before the annuitant is age 59 1/2,
the annuitant may be subject to tax penalties.  These penalties are imposed
under the Code.  The annuitant may not be subject to tax penalties on amounts
received before age 59 1/2 if:  (1) the annuitant becomes disabled as defined by
the Code; (2) the amount received is in excess of the allowed deduction and
returned to the annuitant before the required tax return filing date for that
year, together with any earned interest; or (3) if the entire amount in the
contract is received and reinvested in a similar plan entitled to similar tax
treatment.  Additional exceptions to tax penalties may be available to the
annuitant.

We will not be liable for any tax penalties under this contract.  We are not
liable for penalties on amounts received or paid by us under this contract.


                                                             Minnesota Mutual 3

<PAGE>

Any transaction treated by law as a contract distribution may be treated by us
as a complete contract surrender.

GENERAL INFORMATION

IS THE INTEREST OF THE ANNUITANT IN THIS CONTRACT NONFORFEITABLE?

Yes.  The entire interest of the annuitant in this contract is nonforfeitable. 
The annuitant shall possess the entire benefit provided by this contract.  This
contract is established for the exclusive benefit of the annuitant and his or
her beneficiaries.

HOW WILL DIVIDENDS BE APPLIED?

Dividends, if received, must be added to the accumulation value or applied to
increase annuity payments.

HOW WILL A REFUND OF PREMIUMS BE APPLIED?

Any refund of premiums (other than those attributable to excess purchase
payments) will be applied, before the close of the calendar year following the
year of the refund, toward the payment of future premiums or the purchase of
additional benefits.

MAY THIS AGREEMENT BE AMENDED?

Yes.  This contract may be amended as required to reflect any change in the
Code, regulations or published revenue rulings.  The annuitant will be deemed to
have consented to any such amendment.  We will promptly furnish any such
amendment to the annuitant.

This agreement is effective as of the original contract date unless a different
effective date is shown here.


/s/ Dennis E. Prohofsky
Secretary

/s/ Robert L.Senkler
President


                                                             Minnesota Mutual 4

<PAGE>

[Letterhead]


April 24, 1998


The Minnesota Mutual Life Insurance Company
Minnesota Mutual Life Center
400 Robert Street North
St. Paul, Minnesota  55101


Re:  Minnesota Mutual Variable Annuity Account
     Immediate Variable Annuity Contract


Gentlepersons:

In my capacity as counsel for The Minnesota Mutual Life Insurance Company (the
"Company"), I have reviewed certain legal matters relating to the Company's
Separate Account entitled Minnesota Mutual Variable Annuity Account (the
"Account") in connection with Post-Effective Amendment Number 2 to its 
Registration Statement on Form N-4.  This Registration Statement is to be filed
by the Company and the Account with the Securities and Exchange Commission under
the Securities Act of 1933, as amended, with respect to certain immediate 
variable annuity contracts.

Based upon that review, I am of the following opinion:

     1.   The Account is a separate account of the Company duly created and
          validly existing pursuant of the laws of the State of Minnesota; and

     2.   The issuance and sale of these variable annuity contracts funded by
          the Account have been duly authorized by the Company and such
          contracts, when issued in accordance with and as described in the
          current Prospectus contained in the Registration Statement, and upon
          compliance with applicable local and federal laws, will be legal and
          binding obligations of the Company in accordance with their terms.

I hereby consent to the filing of this opinion as an exhibit to the Registration
Statement.

Sincerely,

/s/ Donald F. Gruber

Donald F. Gruber
Senior Counsel

<PAGE>

                                                                      Exhibit 10


                          [KPMG Peat Marwick Letterhead]


                          INDEPENDENT AUDITORS' CONSENT


The Board of Directors
The Minnesota Mutual Life Insurance Company:


We consent to the use of our reports included herein and to the reference to our
Firm under the heading "AUDITORS" in Part B of the Registration Statement.



                                   /s/ KPMG Peat Marwick LLP

                                       KPMG Peat Marwick LLP


Minneapolis, Minnesota
April 24, 1998

<PAGE>

                    The Minnesota Mutual Life Insurance Company
                                 Power of Attorney
                          To Sign Registration Statements


     WHEREAS, The Minnesota Mutual Life Insurance Company ("Minnesota Mutual")
has established certain separate accounts to fund certain variable annuity and
variable life insurance contracts, and

     WHEREAS, Minnesota Mutual Variable Fund D ("Fund D") is a separate account
of Minnesota Mutual registered as a unit investment trust under the Investment
Company Act of 1940 offering variable annuity contracts registered under the
Securities Act of 1933, and

     WHEREAS, Minnesota Mutual Variable Annuity Account ("Variable Annuity
Account") is a separate account of Minnesota Mutual registered as a unit
investment trust under the Investment Company Act of 1940 offering variable
annuity contracts registered under the Securities Act of 1933, and

     WHEREAS, Minnesota Mutual Variable Life Account ("Variable Life Account")
is a separate account of Minnesota Mutual registered as a unit investment trust
under the Investment Company Act of 1940 offering variable adjustable life
insurance policies registered under the Securities Act of 1933,

     WHEREAS, Minnesota Mutual Group Variable Annuity Account ("Group Variable
Annuity Account") is a separate account of Minnesota Mutual which has been
established for the purpose of issuing group annuity contracts on a variable
basis and which is to be registered as a unit investment trust under the
Investment Company Act of 1940 offering group variable annuity contracts and
certificates to be registered under the Securities Act of 1933;

     WHEREAS, Minnesota Mutual Variable Universal Life Account ("Variable
Universal Life Account") is a separate account of Minnesota Mutual which has
been established for the purpose of issuing group and individual variable
universal life insurance policies on a variable basis and which is to be
registered as a unit investment trust under the Investment Company Act of 1940
offering group and individual variable universal life insurance policies to be
registered under the Securities Act of 1933;

     NOW THEREFORE, We, the undersigned Trustees of Minnesota Mutual, do hereby
appoint Dennis E. Prohofsky and Garold M. Felland, and each of them
individually, as attorney in fact for the purpose of signing in their names and
on their behalf as Trustees of Minnesota Mutual and filing with the Securities
and Exchange Commission Registration Statements, or any amendment thereto, for
the purpose of:  a) registering contracts and policies of Fund D, the Variable
Annuity Account, the Variable Life Account, the Group Variable Annuity Account
and the Variable Universal Life Account for sale by those entities and Minnesota
Mutual under the Securities Act of 1933; and b) registering Fund D, the Variable
Annuity Account, the Variable Life Account, the Group Variable Annuity Account
and the Variable Universal Life Account as unit investment trusts under the
Investment Company Act of 1940.

<PAGE>

        Signature                  Title                       Date
        ---------                  -----                       ----

 /s/Robert L. Senkler              Chairman of the Board,      February 9, 1998
- ------------------------------     President and Chief
    Robert L. Senkler              Executive Officer


 /s/Giulio Agostini                Trustee                     February 9, 1998
- ------------------------------
    Giulio Agostini


 /s/Anthony L. Andersen            Trustee                     February 9, 1998
- ------------------------------
    Anthony L. Andersen


 /s/Leslie S. Biller               Trustee                     February 9, 1998
- ------------------------------
    Leslie S. Biller


                                   Trustee
- ------------------------------
    John F. Grundhofer


 /s/Harold V. Haverty              Trustee                     February 9, 1998
- ------------------------------
    Harold V. Haverty


 /s/David S. Kidwell, Ph.D.        Trustee                     February 9, 1998
- ------------------------------
    David S. Kidwell, Ph.D.


 /s/Reatha C. King, Ph.D.          Trustee                     February 9, 1998
- ------------------------------
    Reatha C. King, Ph.D.


 /s/ Thomas E. Rohricht            Trustee                     February 9, 1998
- ------------------------------
     Thomas E. Rohricht


 /s/ Terry Tinson Saario, Ph.D.    Trustee                     February 9, 1998
- ------------------------------
     Terry Tinson Saario, Ph.D.

<PAGE>

 /s/ Michael E. Shannon            Trustee                     February 9, 1998
- ------------------------------
     Michael E. Shannon


 /s/ Frederick T. Weyerhaeuser     Trustee                     February 9, 1998
- ------------------------------
     Frederick T. Weyerhaeuser




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