ANCHOR NATIONAL LIFE INSURANCE CO
POS AM, 1999-05-14
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<PAGE>

     As filed with the Securities and Exchange Commission on May 14, 1999
                                                     Registration No. 333-08877
- -------------------------------------------------------------------------------

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

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

                POST-EFFECTIVE AMENDMENT NO. 5 ON FORM S-3 TO
                              FORM S-1 ON FORM S-3
                                     UNDER
                           THE SECURITIES ACT OF 1933
                                 -------------

                  ANCHOR NATIONAL LIFE INSURANCE COMPANY
            (Exact name of registrant as specified in its charter)

California                           6311                     86-0198983
(State or other               (Primary Standard            (I.R.S. Employer
jurisdiction of            Industrial Classification     Identification Number)
incorporation or Number)        organization)


                             1 SunAmerica Center
                      Los Angeles, California 90067-6022
                               (310) 772-6000
            (Address, including zip code, and telephone number,
                      including area code, or registrant's
                           principal executive offices)


                            Susan L. Harris, Esquire
                      Anchor National Life Insurance Company
                              1 SunAmerica Center
                       Los Angeles, California 90067-6022
                               (310) 772-6000
           (Name, address, including zip code, and telephone number,
                    including area code of agent for service)

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

     Approximate date of commencement of proposed sale to the public: As soon 
after the effective date of this Registration Statement as is practicable.

     If the only securities being registered on this form are being offered 
pursuant to dividend or interest reinvestment plans, please check the 
following box. / /

     If any of the securities being registered on this form are to be offered 
on a delayed or continuous basis pursuant to Rule 415 under the Securities 
Act of 1933, other than securities offered only in connection with dividend 
or interest reinvestment plans, check the following box. /X/

     If this form is filed to register additional securities for an offering 
pursuant to Rule 462(b) under the Securities Act, please check the following 
box and list the Securities Act registration statement number of the earlier 
effective registration statement for the same offering. / / _____________

     If this form is a post-effective amendment filed pursuant to Rule 462(c) 
under the Securities Act, check the following box and list the Securities Act 
registration statement number of the earlier effective registration statement 
for the same offering. / / _____________

     If delivery of the prospectus is expected to be made pursuant to Rule 
434, please check the following box. / / _____________

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

     The Registrant hereby amends this Registration Statement on such date or 
dates as may be necessary to delay its effective date until the Registrant 
shall file a further amendment which specifically states that this 
Registration Statement shall thereafter become effective in accordance with 
Section 8(a) of the Securities Act of 1933 or until the Registration 
Statement shall become effective on such date as the Commission, acting 
pursuant to said Section 8(a), shall determine.

- -------------------------------------------------------------------------------
<PAGE>
   
                                     [LOGO]
 
                                    PROFILE
    
 
   
                                 July 15, 1999
    
 
This Profile is a summary of some of the more important points you should know
before purchasing the Seasons Variable Annuity. The annuity is more fully
described in the prospectus. Please read the prospectus carefully.
 
1. THE SEASONS VARIABLE ANNUITY
 
The Seasons Variable Annuity Contract is a contract between you and Anchor
National Life Insurance Company. We designed Seasons to help you save on a
tax-deferred basis and diversify your investments among asset classes and
managers to meet long-term financial goals, such as retirement funding. Tax
deferral means all your money, including the amount you would otherwise pay in
current income taxes, remains in your contract to generate more earnings. Your
money could grow faster than it would in a comparable taxable investment.
 
   
The Seasons Variable Annuity helps you meet these goals by offering four
variable investment STRATEGIES which are managed by five different professional
investment managers. The value of any portion of your contract allocated to the
STRATEGIES will fluctuate up or down based on the performance of the STRATEGIES
you select. You may experience a loss. Five fixed account options, each for a
different length of time and offering different interest rates guaranteed by
Anchor National, are available. In addition, the DCA fixed accounts also offer
fixed interest rates guaranteed by Anchor National and are available under the
contract as source accounts for the Dollar Cost Averaging program.
    
 
The STRATEGIES and fixed account options are designed to be used in concert in
order to achieve your desired investment goals. You may put money into any of
the STRATEGIES and/or fixed account options. You may transfer between STRATEGIES
and/or the fixed account options four times per year without charge.
 
Like most annuities, the contract has an Accumulation Phase and an Income Phase.
During the Accumulation Phase, you invest money in your contract. Your earnings
are based on the investment performance of the STRATEGY or STRATEGIES to which
your money is allocated and/or the interest rate earned on the fixed account
options. You may withdraw money from your contract during the Accumulation
Phase. However, as with other tax-deferred investments, you will pay taxes on
earnings and untaxed contributions when you withdraw them. A federal tax penalty
may apply if you make withdrawals before age 59 1/2. During the Income Phase,
you will receive payments from your annuity. Your payments may be fixed in
dollar amount, vary with investment performance or be a combination of both,
depending on where your money is allocated. Among other factors, the amount of
money you are able to accumulate in your contract during the Accumulation Phase
will determine the amount of your payments during the Income Phase.
<PAGE>
2.  INCOME OPTIONS
 
You can select from one of five income options:
 
    (1) payments for your lifetime;
    (2) payments for your lifetime and your survivor's lifetime;
    (3) payments for your lifetime and your survivor's lifetime, but for not
        less than 10 or 20 years;
    (4) payments for your lifetime, but for not less than 10 or 20 years; and
    (5) payments for a specified period of 5 to 30 years.
 
You will also need to decide if you want your payments to fluctuate with
investment performance or remain constant, and the date on which your payments
will begin. Once you begin receiving payments, you cannot change your income
option. If your contract is non-qualified, payments during the Income Phase are
considered partly a return of your original investment. The "original
investment" part of each payment is not taxable but any gain to your original
investment is currently taxable as ordinary income upon distribution. For
qualified contracts, the entire payment is currently taxable as ordinary income.
 
In addition to the above income options, you may also elect to take income
payments under the Income Protector program, subject to the provisions thereof.
 
3.  PURCHASING A SEASONS VARIABLE ANNUITY
 
You can buy a contract through your financial representative, who can also help
you complete the proper forms. For Non-Qualified contracts the minimum initial
investment is $5,000. For Qualified contracts the minimum initial investment is
$2,000. You can add $500 or more to your contract at any time during the
Accumulation Phase.
 
4. INVESTMENT OPTIONS
 
You can put your money into any one or more of the four multi-manager variable
investment STRATEGIES and/or one or more of the seven fixed account options. The
fixed investment options offer fixed rates of interest for specified lengths of
time.
 
Each STRATEGY has a different investment objective. The STRATEGIES use an asset
allocation investment approach. The STRATEGIES invest in a combination of
underlying investment portfolios which in turn invest in a combination of
stocks, bonds and cash, to achieve their investment objective. The four
investment STRATEGIES are:
 
                                     GROWTH
                                MODERATE GROWTH
                                BALANCED GROWTH
                              CONSERVATIVE GROWTH
 
Each STRATEGY invests in three out of six underlying investment portfolios. The
underlying investment portfolios are managed by the following five investment
managers:
 
                       PUTNAM INVESTMENT MANAGEMENT, INC.
                         T. ROWE PRICE ASSOCIATES, INC.
                           JANUS CAPITAL CORPORATION
                       SUNAMERICA ASSET MANAGEMENT CORP.
                       WELLINGTON MANAGEMENT COMPANY, LLP
 
5.  EXPENSES
 
Each year we deduct a $35 ($30 in North Dakota) contract administration fee on
your contract anniversary. We currently waive this fee if your contract value is
at least $50,000 on your contract anniversary.
 
We also deduct insurance charges which amount to 1.40% annually of the average
daily value of your contract allocated to the STRATEGIES. There are also
investment charges and other expenses if you put money into the STRATEGIES,
which are estimated to range from 1.12% to 1.25%. Investment charges may be more
or less than the percentages reflected here.
 
If you take your money out in excess of the "free withdrawal" amount allowed for
in your contract, we may assess a withdrawal charge that is a percentage of the
money you withdraw. The percentage declines with each year the purchase payment
is in the contract as follows:
 
<TABLE>
<S>              <C>          <C>              <C>
Year 1.........   7%          Year 5.........   4%
Year 2.........   6%          Year 6.........   3%
Year 3.........   6%          Year 7.........   2%
Year 4.........   5%          Year 8.........   0%
</TABLE>
 
Additionally, if you take money out of a multi-year fixed account option before
the end of the selected period, we may assess an adjustment which could increase
or decrease the value of your money.
 
In some states you may also be assessed a state premium tax of up to 3.5%,
depending upon the state in which you reside.
 
If you transfer among the STRATEGIES and/or fixed account options more than four
times per year, we may charge a $25 dollar transfer fee for each subsequent
transfer ($10 in Pennsylvania and Texas).
 
If you elect the PLUS or MAX Alternative of the Income Protector feature, we
will charge .15% or .30% of your Income Benefit Base and subtract it from your
contract value.
<PAGE>
The following chart is designed to help you understand the charges in your
contract. THE COLUMN "TOTAL ANNUAL CHARGES" SHOWS THE TOTAL OF THE $35 CONTRACT
ADMINISTRATION CHARGE, THE 1.40% INSURANCE CHARGES AND THE INVESTMENT CHARGES
FOR EACH STRATEGY. WE CONVERTED THE CONTRACT ADMINISTRATION CHARGE TO A
PERCENTAGE (.09%) USING AN ASSUMED CONTRACT SIZE OF $40,000. The actual impact
of this charge on your contract may differ from this percentage.
 
<TABLE>
<CAPTION>
 
                         Total Annual
                          Insurance
                           Related                      Total Annual                    EXAMPLES
                           Charges                       Investment      Total      Total      Total
STRATEGY                                                   Related      Annual    Expenses    Expenses
                                                           Charges      Charges   at end of  at end of
                                                                                   1 YEAR     10 YEARS
<S>                      <C>           <C>              <C>            <C>        <C>        <C>
 
Growth                      1.49%      (1.40% + .09%)       1.25%        2.74%       $98        $307
Moderate Growth             1.49%      (1.40% + .09%)       1.21%        2.70%       $97        $303
Balanced Growth             1.49%      (1.40% + .09%)       1.17%        2.66%       $97        $299
Conservative Growth         1.49%      (1.40% + .09%)       1.12%        2.61%       $96        $294
</TABLE>
 
The examples assume that you invested $1,000 in a STRATEGY which earns 5%
annually and that you withdrew your money at the end of a 1 year period and at
the end of a 10 year period. For year 1, the total annual charges are assessed
as well as the withdrawal charge. For year 10, the example reflects the total
annual charges but there is no withdrawal charge applicable. The annual
investment-related expenses may vary. The amounts shown here are estimates and
reflect the waiver or reimbursement of expenses by the investment adviser. No
premium taxes are reflected. Please see the Fee Tables in the prospectus for
more detailed information regarding the fees and expenses incurred under the
contract.
 
6. TAXES
 
Unlike taxable investments where earnings are taxed in the year they are earned,
taxes on amounts earned in a non-qualified contract (one that is established
with after tax dollars) are deferred until they are withdrawn. In a qualified
contract (one that is established with before tax dollars) all amounts are
taxable when they are withdrawn.
 
When you begin taking distributions or withdrawals from your contract, earnings
are considered to be taken out first and will be taxed at your ordinary income
tax rate. You may be subject to a 10% federal tax penalty for distributions or
withdrawals before age 59 1/2.
 
7. ACCESS TO YOUR MONEY
 
Withdrawals may be made from your contract in the amount of $1,000 or more. Each
year, you can take out up to 10% of the total amount you invested without
charge. Withdrawals in excess of the 10% will be assessed a withdrawal charge.
If you withdraw your entire contract value you will not receive the benefit of
any free withdrawal amount. A separate withdrawal charge schedule applies to
each purchase payment. After a purchase payment has been in the contract for
seven full years, withdrawal charges no longer apply to that portion of the
money. Of course, you may also have to pay income tax and a 10% IRS tax penalty
may apply. Neither withdrawal charges nor the 10% federal tax penalty are
assessed when a death benefit is paid.
 
8. PERFORMANCE
 
The value of your annuity will fluctuate depending upon the investment
performance of the STRATEGY or STRATEGIES you select. From time to time we may
advertise a STRATEGY'S total return. The total return figures are based on
historical data and are not intended to indicate future performance.
 
The following chart shows total return for each STRATEGY for calendar year 1998.
These numbers reflect the insurance charges, the contract maintenance fee and
investment charges. Withdrawal charges are not reflected in the chart. Past
performance is not a guarantee of future results.
 
<TABLE>
<CAPTION>
STRATEGY                          1998
<S>                             <C>
  Growth                         25.38%
  Moderate Growth                22.58%
  Balanced Growth                19.62%
  Conservative Growth            16.42%
</TABLE>
 
9. DEATH BENEFIT
 
If you, or, if there is a joint owner, either of the two of you, should die
during the Accumulation Phase, your Beneficiary will receive a death benefit.
 
If you die before age 75, the death benefit will be the greater of: (1) the
money you put into the contract less any withdrawals, applicable charges and
market value adjustments on those withdrawals, accumulated at 3%; or (2) the
current value of your contract.
 
If you die after age 75, the death benefit will be the greater of: (1) the money
you put into the contract less any withdrawals, charges and market value
adjustments, accumulated at 3% until your 75th birthday plus any subsequent
Purchase Payments and less any withdrawals; or (2) the current value of your
contract.
<PAGE>
In the instance of joint owners, the amount of the death benefit is calculated
based upon the age of the youngest joint owner.
 
10. OTHER INFORMATION
 
OWNERSHIP: The contract is an allocated fixed and variable group annuity
contract. A group contract is issued to a contractholder, for the benefit of the
participants in the group. You, as an owner of a Seasons Variable Annuity, are a
participant in the group and will receive a certificate evidencing your
ownership. You, as the owner of a certificate, are entitled to all the rights
and privileges of ownership. As used in this Profile and the prospectus, the
term contract refers to your certificate. In some states an individual fixed and
variable annuity contract may be available instead, which is identical to the
group contract described in this Profile and the prospectus except that it is
issued directly to the individual owner.
 
FREE LOOK: You may cancel your contract within 10 days of receiving it (or
whatever period is required by your state) by mailing it to our Annuity Service
Center. Your contract will be treated as void on the date we receive it and we
will pay you an amount equal to the value of the money in the STRATEGIES plus
any money you put into the fixed account options. Its value may be more or less
than the money you initially invested. Thus, the investment risk is borne by you
during the free look period.
 
SYSTEMATIC WITHDRAWAL PROGRAM: If selected by you, this program allows you to
receive either monthly, quarterly, semi-annual or annual checks during the
Accumulation Phase. Systematic withdrawals may also be electronically
transferred to your bank account. Of course, withdrawals during the Accumulation
Phase may be taxable and a 10% IRS tax penalty may apply if you are under age
59 1/2.
 
DOLLAR COST AVERAGING: If selected by you, this program allows you to invest
gradually into one or more of the STRATEGIES.
 
PRINCIPAL ADVANTAGE PROGRAM: If selected by you, this program allows you to put
money in a fixed account option and one or more STRATEGIES and we will guarantee
that the portion allocated to the fixed account option, assuming that it remains
invested in that option, will grow to equal your principal investment.
 
AUTOMATIC PAYMENT PLAN: You can add to your contract directly from your bank
account with as little as $50 per month.
 
CONFIRMATIONS AND QUARTERLY STATEMENTS: You will receive a confirmation of each
transaction within your contract. On a quarterly basis, you will receive a
complete statement of your transactions over the past quarter and a summary of
your account values.
 
11. INQUIRIES:
 
If you have questions about your contract or need to make changes, call your
financial representative or contact us at:
 
Anchor National Life Insurance Company
Annuity Service Center
P.O. Box 54299
Los Angeles, California 90054-0299
800/445-SUN2
 
If money accompanies your correspondence, you should direct it to:
 
Anchor National Life Insurance Company
P.O. Box 100330
Pasadena, California 91189-0001
<PAGE>
                                     [LOGO]
 
                   ALLOCATED FIXED AND VARIABLE GROUP ANNUITY
                                   issued by
                         VARIABLE ANNUITY ACCOUNT FIVE
                                      and
                     ANCHOR NATIONAL LIFE INSURANCE COMPANY
 
The annuity contract has 11 investment choices - 7 fixed account options which
offer interest rates guaranteed by Anchor National for different periods of time
and 4 variable investment STRATEGIES:
 
                                     GROWTH
                                MODERATE GROWTH
                                BALANCED GROWTH
                              CONSERVATIVE GROWTH
 
                  which invest in the underlying portfolios of
                              SEASONS SERIES TRUST
                              which is managed by:
 
                       PUTNAM INVESTMENT MANAGEMENT, INC.
                         T. ROWE PRICE ASSOCIATES, INC.
                           JANUS CAPITAL CORPORATION
                       SUNAMERICA ASSET MANAGEMENT CORP.
                       WELLINGTON MANAGEMENT COMPANY, LLP
 
You can put your money into any one or all of the STRATEGIES and/or fixed
account options.
 
Please read this prospectus carefully before investing and keep it for your
future reference. It contains important information you should know about the
Seasons Variable Annuity.
 
   
To learn more about the annuity offered by this prospectus, you can obtain a
copy of the Statement of Additional Information ("SAI") dated July 15,
1999.  The SAI has been filed with the Securities and Exchange Commission
("SEC") and is incorporated by reference into this prospectus. The table of
contents of the SAI appears on page 30 of this prospectus. For a free copy of
the SAI, call us at 800/445-SUN2 or write us at our Annuity Service Center, P.O.
Box 54299, Los Angeles, California 90054-0299.
    
 
In addition, the SEC maintains a website (http://www.sec.gov) that contains the
SAI, materials incorporated by reference and other information filed
electronically with the SEC.
 
ANNUITIES INVOLVE RISK, INCLUDING POSSIBLE LOSS OF PRINCIPAL, AND ARE NOT A
DEPOSIT OR OBLIGATION OF, OR GUARANTEED OR ENDORSED BY, ANY BANK. THEY ARE NOT
FEDERALLY INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
RESERVE BOARD OR ANY OTHER AGENCY.
 
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.
<PAGE>
   
INCORPORATION OF CERTAIN
DOCUMENTS BY REFERENCE
    
 
   
Anchor National's Annual Report on Form 10-K for the year ended September 30,
1998, and its quarterly report on Form 10-Q for the quarters ended December 31,
1998 and March 31, 1999 are incorporated herein by reference. In addition,
Anchor National filed two reports on Form 8-K on January 14 and 15 and filed one
report on Form 8-K/A on March 12, 1999. These reports are also incorporated
herein by reference.
    
 
   
All documents or reports filed by Anchor National under Section 13(a), 13(c),
14, or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange
Act") after the effective date of this prospectus are also incorporated by
reference. Statements contained in this prospectus and subsequently filed
documents which are incorporated by reference or deemed to be incorporated by
reference are deemed to modify or supersede documents incorporated herein by
reference.
    
 
   
Anchor National files its Exchange Act documents and reports, including its
annual and quarterly reports on Form 10-K and Form 10-Q, electronically pursuant
to EDGAR under CIK No. 0000006842.
    
 
   
Anchor National is subject to the informational requirements of the Securities
and Exchange Act of 1934 (as amended). We file reports and other information
with the SEC to meet those requirements. You can inspect and copy this
information at SEC public facilities at the following locations:
    
 
   
WASHINGTON, DISTRICT OF COLUMBIA
450 Fifth Street, N.W., Room 1024
Washington, D.C. 20549
    
 
   
CHICAGO, ILLINOIS
500 West Madison Street
Chicago, IL 60661
    
 
   
NEW YORK, NEW YORK
7 World Trade Center, 13th Fl.
New York, NY 10048
    
 
   
To obtain copies by mail contact the Washington, D.C. location. After you pay
the fees as prescribed by the rules and regulations of the SEC, the required
documents are mailed.
    
 
   
Registration Statements under the Securities Act of 1933, as amended, related to
the contracts offered by this prospectus are on file with the SEC. This
prospectus does not contain all of the information contained in the Registration
Statement and its exhibits. For further information regarding the Separate
Account, Anchor National and its general account, the Portfolios and the
contract, please refer to the registration statement and its exhibits.
    
 
   
The SEC also maintains a website (http://www.sec.gov) that contains the SAI,
materials incorporated by reference and other information filed electronically
with the SEC by Anchor National.
    
 
   
Anchor National will provide without charge to each person to whom this
prospectus is delivered, upon written or oral request, a copy of the above
documents incorporated herein by reference. Requests for these documents should
be directed to Anchor National's Annuity Service Center, as follows:
    
 
   
    Anchor National Life Insurance Company
    Annuity Service Center
    P.O. Box 54299
    Los Angeles, California 90054-0299
    Telephone Number: (800) 445-SUN2
    
 
   
SECURITIES AND EXCHANGE COMMISSION POSITION ON
INDEMNIFICATION
    
 
   
Indemnification for liabilities arising under the Securities Act of 1933 (the
"Act") is provided to Anchor National's officers, directors and controlling
persons. The SEC has advised that it believes such indemnification is against
public policy under the Act and unenforceable. If a claim for indemnification
against such liabilities (other than for Anchor National's payment of expenses
incurred or paid by its directors, officers or controlling persons in the
successful defense of any legal action) is asserted by a director, officer or
controlling person of Anchor National in connection with the securities
registered under this prospectus, Anchor National will submit to a court with
jurisdiction to determine whether the indemnification is against public policy
under the Act. Anchor National will be governed by final judgment of the issue.
However, if in the opinion of Anchor National's counsel this issue has been
determined by controlling precedent, Anchor National will not submit the issue
to a court for determination.
    
<PAGE>
TABLE OF CONTENTS
 
   
<TABLE>
<S>                                                                                                                   <C>
GLOSSARY............................................................................................................          3
FEE TABLES..........................................................................................................          4
    Owner Transaction Expenses......................................................................................          4
    Annual Separate Account Expenses................................................................................          4
    The Income Protector Expense....................................................................................          4
    Investment Portfolio Expenses...................................................................................          4
EXAMPLES............................................................................................................          5
THE SEASONS VARIABLE ANNUITY........................................................................................          6
PURCHASING A SEASONS VARIABLE ANNUITY CONTRACT......................................................................          6
    Allocation of Purchase Payments.................................................................................          7
    Accumulation Units..............................................................................................          7
    Free Look.......................................................................................................          8
INVESTMENT OPTIONS..................................................................................................          8
    Variable Investment Options.....................................................................................          8
      THE STRATEGIES................................................................................................          8
      STRATEGY REBALANCING..........................................................................................         12
    Fixed Account Options...........................................................................................         12
    Market Value Adjustment.........................................................................................         13
    Transfers During the Accumulation Phase.........................................................................         13
    Dollar Cost Averaging...........................................................................................         14
    Principal Advantage Program.....................................................................................         15
    Voting Rights...................................................................................................         15
    Substitution....................................................................................................         15
ACCESS TO YOUR MONEY................................................................................................         16
    Systematic Withdrawal Program...................................................................................         16
    Minimum Contract Value..........................................................................................         17
    Qualified Contract Owners.......................................................................................         17
DEATH BENEFIT.......................................................................................................         17
    Death of the Annuitant..........................................................................................         18
EXPENSES............................................................................................................         18
    Insurance Charges...............................................................................................         18
    Withdrawal Charges..............................................................................................         18
    Investment Charges..............................................................................................         19
    Contract Maintenance Fee........................................................................................         19
    Transfer Fee....................................................................................................         19
    Premium Tax.....................................................................................................         19
    Income Taxes....................................................................................................         20
    Reduction or Elimination of Charges and Expenses, and Additional Amounts Credited...............................         20
INCOME OPTIONS......................................................................................................         20
    Annuity Date....................................................................................................         20
    Income Options..................................................................................................         20
    Allocation of Income Payments...................................................................................         21
    Fixed or Variable Income Payments...............................................................................         21
    Income Payments.................................................................................................         22
    Transfers During the Income Phase...............................................................................         22
    Deferment of Payments...........................................................................................         22
    The Income Protector............................................................................................         22
TAXES...............................................................................................................         26
    Annuity Contracts in General....................................................................................         26
    Tax Treatment of Distributions--Non-qualified Contracts.........................................................         26
    Tax Treatment of Distributions--Qualified Contracts.............................................................         27
    Minimum Distributions...........................................................................................         27
    Diversification.................................................................................................         27
PERFORMANCE.........................................................................................................         28
OTHER INFORMATION...................................................................................................         28
    The Separate Account............................................................................................         28
    The General Account.............................................................................................         29
    Distribution of the Contract....................................................................................         29
    Administration..................................................................................................         29
    Year 2000.......................................................................................................         29
    Legal Proceedings...............................................................................................         30
    Custodian.......................................................................................................         30
    Registration Statement..........................................................................................         30
INDEPENDENT ACCOUNTANTS.............................................................................................         30
TABLE OF CONTENTS OF STATEMENT OF ADDITIONAL INFORMATION............................................................         31
APPENDIX A--CONDENSED FINANCIAL INFORMATION.........................................................................        A-1
APPENDIX B--MARKET VALUE ADJUSTMENT.................................................................................        B-1
APPENDIX C--PREMIUM TAXES...........................................................................................        C-1
</TABLE>
    
 
                                       2
<PAGE>
GLOSSARY
 
We have capitalized some of the technical terms used in this prospectus. To help
you understand these terms, we define them in this glossary.
 
ACCUMULATION PHASE--The period during which you invest money in your contract.
 
ACCUMULATION UNITS--A measurement we use to calculate the value of the variable
portion of your contract during the Accumulation Phase.
 
ANNUITANT(S)--The person(s) on whose life (lives) we base annuity payments.
 
ANNUITY DATE--The date on which annuity payments are to begin, as selected by
you.
 
ANNUITY UNITS--A measurement we use to calculate the amount of annuity payments
you receive from the variable portion of your contract during the Income Phase.
 
BENEFICIARY (IES)--The person(s) designated to receive any benefits under the
contract if you or the Annuitant dies.
 
   
COMPANY--Anchor National Life Insurance Company, Anchor National, We, Us, the
insurer which issues this policy.
    
 
INCOME PHASE--The period during which we make annuity payments to you.
 
IRS--The Internal Revenue Service.
 
NON-QUALIFIED (CONTRACT)--A contract purchased with after-tax dollars. In
general, these contracts are not under any pension plan, specially sponsored
program or individual retirement account ("IRA").
 
PURCHASE PAYMENTS--The money you give us to buy the contract, as well as any
additional money you give us to invest in the contract after you own it.
 
QUALIFIED (CONTRACT)--A contract purchased with pretax dollars. These contracts
are generally purchased under a pension plan, specially sponsored program or
individual retirement account ("IRA").
 
STRATEGY(IES)--A sub-account of Variable Annuity Account Five which provides for
the variable investment options available under the contract. Each STRATEGY has
its own investment objective and is invested in the underlying investment
porfolios of the Seasons Series Trust.
 
                                       3
<PAGE>
SEASONS VARIABLE ANNUITY FEE TABLES
                   -------------------------------------------------------------
 
OWNER TRANSACTION EXPENSES
 
Withdrawal Charge as a percentage of Purchase Payments:
 
<TABLE>
<S>                   <C>        <C>                   <C>
Year 1..............    7%       Year 5..............    4%
Year 2..............    6%       Year 6..............    3%
Year 3..............    6%       Year 7..............    2%
Year 4..............    5%       Year 8..............    0%
</TABLE>
 
<TABLE>
<S>                                  <C>
Contract Maintenance Charge........  $35 each year ($30 in North Dakota)
Transfer Fee.......................  No charge for first 4 transfers each
                                     year; thereafter, the fee is $25 per
                                     transfer ($10 in
                                     Pennsylvania and Texas)
</TABLE>
 
THE INCOME PROTECTOR EXPENSE
(The Income Protector PLUS & MAX features are optional and if elected the fees
are deducted annually from your contract value)
 
<TABLE>
<CAPTION>
                                    Fee as a percentage of
The Income Protector                         your
    Alternatives                      Income Benefit Base
- ---------------------------------  -------------------------
<S>                                <C>
Income Protector Plus............            0.15%
Income Protector Max.............            0.30%
</TABLE>
 
ANNUAL SEPARATE ACCOUNT EXPENSES
(as a percentage of daily net asset value)
 
<TABLE>
<S>                                            <C>
Mortality Risk Charge........................       0.90%
Expense Risk Charge..........................       0.35%
Distribution Expense Charge..................       0.15%
                                                     ---
      Total Separate Account Expenses........       1.40%
</TABLE>
 
   
                         INVESTMENT PORTFOLIO EXPENSES
 (as a percentage of daily net asset value of each investment portfolio for the
                fiscal year of the Trust ending March 31, 1999)
    
 
   
<TABLE>
<CAPTION>
                                             MANAGEMENT         OTHER         TOTAL ANNUAL
To be Updated by Amendment                      FEE           EXPENSES          EXPENSES
<S>                                       <C>               <C>            <C>
- ----------------------------------------------------------------------------------------------
    Stock                                       .85%               .36%             1.21%
    Asset Allocation: Diversified Growth        .85%               .36%             1.21%
    Multi-Managed Growth                        .89%               .40%             1.29%
    Multi-Managed Moderate Growth               .85%               .36%             1.21%
    Multi-Managed Income/Equity                 .81%               .33%             1.14%
    Multi-Managed Income                        .77%               .29%             1.06%
- ----------------------------------------------------------------------------------------------
</TABLE>
    
 
The Investment Portfolio Expenses table set forth above identifies the total
investment expenses charged by the underlying investment portfolios of Seasons
Series Trust. As explained in this prospectus, each variable investment option
(STRATEGY) under this contract invests in a combination of three of these
underlying portfolios. The total investment charge depending on the particular
STRATEGY, will be a proportion of the investment charges of the underlying
portfolio in which each STRATEGY invests. Accordingly, the actual investment
portfolio expenses incurred by contract holders within a STRATEGY will vary
depending upon the daily net asset value of each investment portfolio in which
each STRATEGY is invested. You can get a better understanding of the practical
ramifications of this blended investment charge by looking at the next table
Investment Portfolio Expenses By STRATEGY. That table sets forth an estimate of
the annual investment charge you may incur as a result of the ratio of the
STRATEGY(ies) investment in the underlying portfolios.
 
The total investment expenses for each contract owner will be based upon the
STRATEGY in which they are invested. Each STRATEGY invests in different
proportions of these underlying portfolios. The proportion of each portfolio in
each particular STRATEGY determines the amounts of investment charge borne by
each contractholder.
 
THE ABOVE INVESTMENT PORTFOLIO EXPENSES WERE PROVIDED BY SEASONS SERIES TRUST.
WE HAVE NOT INDEPENDENTLY VERIFIED THE ACCURACY OF THE INFORMATION.
 
                                       4
<PAGE>
   
                   INVESTMENT PORTFOLIO EXPENSES BY STRATEGY
  (based on the total annual expenses of the underlying investment portfolios
 reflected above as of the fiscal year end of the Trust ending March 31, 1999)
    
 
   
<TABLE>
<CAPTION>
                                           MANAGEMENT         OTHER         TOTAL ANNUAL
To be updated by Amendment                    FEE           EXPENSES          EXPENSES
<S>                                     <C>               <C>            <C>
- --------------------------------------------------------------------------------------------
  STRATEGY
    Growth                                    .87%            .38%              1.25%
    Moderate Growth                           .85%            .36%              1.21%
    Balanced Growth                           .83%            .34%              1.17%
    Conservative Growth                       .80%            .32%              1.12%
- --------------------------------------------------------------------------------------------
</TABLE>
    
 
                                    EXAMPLES
 
You will pay the following expenses on a $1,000 investment in each STRATEGY,
assuming a 5% annual return on assets and:
 
  (a) that you surrender the contract at the end of the stated time period;
  (b) that the contract is annuitized or not surrendered.*
 
<TABLE>
<CAPTION>
                           TIME PERIODS
STRATEGY                1 YEAR     3 YEARS     5 YEARS      10 YEARS
<S>                    <C>        <C>         <C>         <C>
Growth                 (a) $98    (a) $145    (a) $185    (a) $307
                       (b) $28    (b) $ 85    (b) $145    (b) $307
Moderate Growth        (a) $97    (a) $144    (a) $183    (a) $303
                       (b) $27    (b) $ 84    (b) $143    (b) $303
Balanced Growth        (a) $97    (a) $143    (a) $181    (a) $299
                       (b) $27    (b) $ 83    (b) $141    (b) $299
Conservative Growth    (a) $96    (a) $141    (a) $178    (a) $294
                       (b) $26    (b) $ 81    (b) $138    (b) $294
* We do not currently charge a withdrawal charge when you elect to
  begin income payments, unless you elect to take income under the
  Income Protector program. We will assess any applicable surrender
  charges upon annuitizations using the Income Protector program.
</TABLE>
 
                     EXPLANATION OF FEE TABLES AND EXAMPLES
 
1.    The purpose of the Fee Tables is to show you the various expenses you will
      incur directly and indirectly by investing in the contract. The example
      reflects owner transaction expenses, separate account expenses and
      investment portfolio expenses by STRATEGY.
2.    For certain investment portfolios in which the STRATEGIES invest, the
      adviser, SunAmerica Asset Management Corp., has voluntarily agreed to
      waive fees or reimburse certain expenses, if necessary, to keep annual
      operating expenses at or below the following percentages of each
      investment portfolio's average net assets: Stock and Asset Allocation:
      Diversified Growth Portfolios: 1.21%; Multi-Managed Growth: 1.29%;
      Multi-Managed Moderate Growth: 1.21%; Multi-Managed Income/Equity: 1.14%,
      Multi-Managed Income: 1.06%. The adviser also may voluntarily waive or
      reimburse additional amounts to increase an investment portfolios'
      investment return. All waivers and/or reimbursements may be terminated at
      any time. Furthermore, the adviser may recoup any waivers or
      reimbursements within two years after such waivers or reimbursements are
      granted, provided that the investment portfolio is able to make such
      payment and remain in compliance with the foregoing expense limitations.
      To date, none of the investment portfolio expenses have exceeded the
      stated caps. Therefore no waiver of fees or reimbursements were
      implemented.
3.    The Examples assume that no transfer fees were imposed. Premium taxes are
      not reflected but may be applicable. In addition, these examples do not
      reflect the fees associated with the optional Income Protector PLUS and
      MAX features.
4.    THESE EXAMPLES SHOULD NOT BE CONSIDERED A REPRESENTATION OF PAST OR FUTURE
      EXPENSES. ACTUAL EXPENSES MAY BE GREATER OR LESS THAN THOSE SHOWN.
 
                              THE HISTORICAL ACCUMULATION
                             UNIT VALUES ARE CONTAINED IN
                      APPENDIX A--CONDENSED FINANCIAL INFORMATION
 
                                       5
<PAGE>
THE SEASONS VARIABLE ANNUITY
- --------------------------------------------------------------------------------
 
An annuity is a contract between you and an insurance company. You are the owner
of the contract. The contract provides three main benefits:
 
    - Tax Deferral: means that you do not pay taxes on your earnings from the
      annuity until you withdraw them.
 
    - Death Benefit: If you die during the Accumulation Phase, the insurance
      company pays a death benefit to your Beneficiary.
 
    - Guaranteed Income: If elected, you receive a stream of income for your
      lifetime, or another available period you select.
 
This annuity was developed to help you contribute to your retirement savings.
The flexibility and diversification offered by this annuity can help you reach
you retirement savings goals. This annuity works in two stages, the Accumulation
Phase and the Income Phase. Your contract is in the Accumulation Phase during
the period when you make payments into the contract. The Income Phase begins
when you request us to start making payments to you out of the money accumulated
in your contract.
 
The Contract is called a "variable" annuity because it allows you to invest in
STRATEGIES which, like mutual funds, vary with market conditions. You can gain
or lose money if you invest in these STRATEGIES. If you allocate money to the
STRATEGY(IES), the amount of money you accumulate in your contract depends on
the performance of the STRATEGY(IES) in which you invest.
 
The Contract also offers several fixed account options for varying time periods.
Fixed account options earn interest at a rate set and guaranteed by Anchor
National. If you allocate money to the fixed account options, the amount of
money that accumulates in the Contract depends on the total interest credited to
the particular fixed account option(s) in which you are invested.
 
For more information on STRATEGIES and fixed account options available under
this contract SEE SECTION 4, INVESTMENT OPTIONS.
 
Anchor National Life Insurance Company (Anchor National, The Company, Us, We)
issues the Seasons Variable Annuity. When you purchase a Seasons Variable
Annuity, a contract exists between you and Anchor National. The Company is a
stock life insurance company organized under the laws of the state of Arizona.
Its principal place of business is 1 SunAmerica Center, Los Angeles, California
90067. The Company conducts life insurance and annuity business in the District
of Columbia and all states except New York. Anchor National is an indirect,
wholly owned subsidiary of American International Group, Inc., a Delaware
corporation.
 
PURCHASING A SEASONS VARIABLE ANNUITY
- --------------------------------------------------------------------------------
 
A Purchase Payment is the money you give us to buy a contract. Any additional
money you give us to invest in the contract after purchase is a subsequent
Purchase Payment.
 
This chart shows the minimum initial and subsequent Purchase Payments permitted
under your contract. These amounts depend upon whether a contract is Qualified
or Non-Qualified for tax purposes.
 
<TABLE>
<CAPTION>
                                                                MINIMUM
                                        MINIMUM INITIAL       SUBSEQUENT
                                       PURCHASE PAYMENT    PURCHASE PAYMENT
                                       -----------------  -------------------
<S>                                    <C>                <C>
Qualified                                  $   2,000           $     500
Non-Qualified                              $   5,000           $     500
</TABLE>
 
                                       6
<PAGE>
   
Prior Company approval is required to make Purchase Payments greater than
$1,000,000. The Company reserves the right to refuse any Purchase Payment or
subsequent Purchase Payments, including but not limited to any Purchase Payments
which would cause the contract value to exceed $1,000,000 at the time of the
Purchase Payment. Also, the optional Automatic Payment Plan allows you to make
subsequent payments as small as $50.00.
    
 
We may refuse any Purchase Payment. In general, we will not issue a contract to
anyone who is age 70 1/2 or older, unless they certify to us that the minimum
distribution required by the IRS is being made. In addition, we may not issue a
contract to anyone over age 90.
 
ALLOCATION OF PURCHASE PAYMENTS
 
We invest your Purchase Payments in the fixed accounts and STRATEGIES according
to your instructions. If we receive a Purchase Payment without allocation
instructions, we will invest the money according to your last allocation
instructions. Purchase Payments are credited based upon the Accumulation Unit
Value (AUV) next determined after receipt. SEE INVESTMENT OPTIONS PAGE 8.
 
In order to issue your contract, we must receive your completed application,
Purchase Payment allocation instructions and any other required paper work at
our Annuity Service Center. We allocate your initial purchase payment within two
days of receiving it. If we do not have complete information necessary to issue
your contract, we will contact you. If we do not have the information necessary
to issue your contract within 5 business days, we will:
 
    - Send your money back to you, or;
 
    - Ask your permission to keep your money until we get the information
      necessary to issue the contract.
 
ACCUMULATION UNITS
 
The value of the variable portion of your contract will go up or down depending
upon the investment performance of the STRATEGY(IES) you select. In order to
keep track of the value of your contract, we use a unit of measure called an
Accumulation Unit which works like a share of a mutual fund. During the Income
Phase, we call them Annuity Units.
 
An Accumulation Unit value is determined each day that the New York Stock
Exchange ("NYSE") is open. We calculate an Accumulation Unit for each STRATEGY
after the NYSE closes each day. We do this by:
 
    1.  determining the total value of money invested in a particular STRATEGY;
 
    2.  subtracting from that amount any asset-based charges and any other
       charges such as taxes we have deducted; and
 
    3.  dividing this amount by the number of outstanding Accumulation Units.
 
The value of an Accumulation Unit may go up or down from day to day. When you
make a Purchase Payment, we credit your contract with Accumulation Units. The
number of Accumulation Units credited is determined by dividing the amount of
the Purchase Payment allocated to a STRATEGY by the value of the Accumulation
Unit for that STRATEGY.
 
    Example:
 
   
    We receive a $25,000 Purchase Payment from you on Wednesday. You want your
    money to be invested in the Moderate Growth STRATEGY. We determine that the
    value of an Accumulation Unit for the Moderate Growth STRATEGY is $11.10
    when the NYSE closes on Wednesday. We then divide $25,000 by $11.10 and
    credit your contract on Wednesday night with 2,252.252 Accumulation Units
    for the Moderate Growth STRATEGY.
    
 
                                       7
<PAGE>
FREE LOOK
 
You may cancel your contract within ten days after receiving it (or longer if
required by state law). We call this a "free look." To cancel, you must mail the
contract along with your free look request to our Annuity Service Center at P.O.
Box 54299, Los Angeles, California 90054-0299. Unless otherwise required by
state law, you will receive back the value of the money allocated to the
STRATEGIES on the day we receive your request plus any Purchase Payment in the
fixed account options. This value may be more or less than the money you
initially invested. Thus, the investment risk is borne by you during the free
look period.
 
Certain states (and under all contracts issued as IRAs) require us to return
your Purchase Payments upon a free look request. With respect to those
contracts, we reserve the right to put your money in the 1-year fixed account
option during the free look period. If you cancel your contract during the free
look period, we return your Purchase Payments or the value of your contract,
whichever is larger. At the end of the free look period, we reallocate your
money according to your instructions.
 
INVESTMENT OPTIONS
- --------------------------------------------------------------------------------
 
The contract offers variable investment options which we call STRATEGIES and
fixed account options. We designed the contract to meet your varying investment
needs over time. You can achieve this by using the STRATEGIES alone or in
concert with the fixed account options. A mixture of your investment in the
STRATEGY(IES) and fixed account options may lower the risk associated with
investing only in a variable investment option.
 
VARIABLE INVESTMENT OPTIONS:
THE STRATEGIES
 
The contract offers four multi-manager variable investment STRATEGIES, each with
a different investment objective. We designed the STRATEGIES to meet your
investment needs over time, considering factors such as your age, goals and risk
tolerance. However, each STRATEGY is designed to achieve different levels of
growth over time.
 
Each STRATEGY invests in three of the six underlying investment portfolios of
the Seasons Series Trust. The allocation of money among these investment
portfolios varies depending on the objective of the STRATEGY.
 
   
SunAmerica Asset Management Corp. ("SAAMCo."), which is affiliated with Anchor
National manages Seasons Series Trust. SAAMCo. engaged sub-advisers to provide
investment advice for certain investment portfolios.
    
 
   
The underlying investment portfolios of Seasons Series Trust include the Asset
Allocation: Diversified Growth Portfolio, the Stock Portfolio and the
Multi-Managed Growth, Multi-Managed Moderate Growth, Multi-Managed Income/Equity
and Multi-Managed Income Portfolios (the "Multi-Managed Portfolios"). Seasons
Series Trust contains other underlying investment portfolios in addition to
those listed here which are not available for investment under the contract.
    
 
The Asset Allocation: Diversified Growth Portfolio is managed by Putnam
Investment Management, Inc. The Stock Portfolio is managed by T. Rowe Price
Associates, Inc. All of the Multi-Managed Portfolios include the same three
basic investment components: a growth component managed by Janus Capital
Corporation, a balanced component managed by SAAMCo. and a fixed income
component managed by Wellington Management
 
                                       8
<PAGE>
Company, LLP. The Growth STRATEGY and the Moderate Growth STRATEGY also have an
aggressive growth component which SAAMCo. manages. The percentage that any one
of these components represents in the Multi-Managed Portfolio varies in
accordance with the investment objective.
 
YOU SHOULD READ THE PROSPECTUS FOR SEASONS SERIES TRUST CAREFULLY BEFORE
INVESTING. THE PROSPECTUS CONTAINS DETAILED INFORMATION ABOUT THE INVESTMENT
PORTFOLIOS AND IS ATTACHED TO THIS PROSPECTUS.
 
Each STRATEGY uses an investment approach based on asset allocation. This
approach is achieved by each STRATEGY investing in distinct percentages in three
specific underlying funds of the Seasons Series Trust. In turn, the underlying
funds invest in a combination of domestic and international stocks, bonds and
cash. Based on the percentage allocation to each specific underlying fund and
each underlying fund's investment approach, each STRATEGY has a neutral asset
allocation mix of stocks, bonds and cash. At the beginning of each quarter a
rebalancing occurs among the underlying funds to realign each STRATEGY with its
distinct percentage investment in the three underlying funds. This rebalancing
is designed to help maintain the neutral asset allocation mix for each STRATEGY.
The pie charts on the following pages demonstrate:
 
    - the neutral asset allocation mix for each STRATEGY; and
 
    - the percentage allocation in which each STRATEGY invests.
 
                                       9
<PAGE>
                                     GROWTH
 
    GOAL: Long-term growth of capital, allocating its assets primarily to
stocks. This STRATEGY may be best suited for those with longer periods to
invest.
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>        <C>
Stocks           80%
Bonds            15%
Cash              5%
</TABLE>
 
                             UNDERLYING INVESTMENT
                             PORTFOLIOS & MANAGERS
 
ASSET ALLOCATION: DIVERSIFIED
 GROWTH PORTFOLIO                  25%
Managed by Putnam Investment
 Management, Inc.
 
STOCK PORTFOLIO                    25%
Managed by T. Rowe Price
 Associates, Inc.
 
MULTI-MANAGED GROWTH PORTFOLIO     50%
 
Managed by:
    Janus Capital Corporation
    SunAmerica Asset Management Corp.
    Wellington Management Company, LLP
 
                                MODERATE GROWTH
 
    GOAL: Growth of capital through investments in equities, with a secondary
objective of conservation of principal by allocating more of its assets to bonds
than the Growth STRATEGY. This STRATEGY may be best suited for those nearing
retirement years but still earning income.
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>        <C>
Stocks           70%
Bonds            25%
Cash              5%
</TABLE>
 
                             UNDERLYING INVESTMENT
                             PORTFOLIOS & MANAGERS
 
ASSET ALLOCATION: DIVERSIFIED
 GROWTH PORTFOLIO                 25%
Managed by Putnam Investment
 Management, Inc.
 
STOCK PORTFOLIO                   20%
Managed by T. Rowe Price
 Associates, Inc.
 
MULTI-MANAGED MODERATE GROWTH
 PORTFOLIO                        55%
 
Managed by:
    Janus Capital Corporation
    SunAmerica Asset Management Corp.
    Wellington Management Company, LLP
 
                                       10
<PAGE>
                                BALANCED GROWTH
 
    Goal: Focuses on conservation of principal by investing in a more balanced
weighting of stocks and bonds, with a secondary objective of seeking a high
total return. This STRATEGY may be best suited for those approaching retirement
and with less tolerance for investment risk.
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>        <C>
Stocks           55%
Bonds            40%
Cash              5%
</TABLE>
 
                             UNDERLYING INVESTMENT
                             PORTFOLIOS & MANAGERS
 
ASSET ALLOCATION: DIVERSIFIED
 GROWTH PORTFOLIO                  25%
Managed by Putnam Investment
 Management, Inc.
 
STOCK PORTFOLIO                    20%
Managed by T. Rowe Price
 Associates, Inc.
 
MULTI-MANAGED INCOME/EQUITY
 PORTFOLIO                         55%
 
Managed by:
    Janus Capital Corporation
    SunAmerica Asset Management Corp.
    Wellington Management Company, LLP
 
                              CONSERVATIVE GROWTH
 
    Goal: Capital preservation while maintaining some potential for growth over
the long term. This STRATEGY may be best suited for those with lower investment
risk tolerance.
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>        <C>
Stocks           42%
Bonds            53%
Cash              5%
</TABLE>
 
                             UNDERLYING INVESTMENT
                             PORTFOLIOS & MANAGERS
 
ASSET ALLOCATION: DIVERSIFIED
 GROWTH PORTFOLIO                 25%
Managed by Putnam Investment
 Management, Inc.
 
STOCK PORTFOLIO                   15%
Managed by T. Rowe Price
 Associates, Inc.
 
MULTI-MANAGED INCOME PORTFOLIO    60%
 
Managed by:
    Janus Capital Corporation
    SunAmerica Asset Management Corp.
    Wellington Management Company, LLP
 
                                       11
<PAGE>
STRATEGY REBALANCING
 
Each STRATEGY is designed to meet its investment objective by allocating a
portion of your money to three different investment portfolios. In order to
maintain the mix of investment portfolios consistent with each STRATEGY's
objective, each STRATEGY within your contract will be rebalanced each quarter.
On the first business day of each quarter (or as close to such date as is
administratively practicable) your money will be allocated among the various
investment portfolios according to the percentages set forth on the prior pages.
Additionally, within each Multi-Managed Portfolio, your money will be rebalanced
among the various components. We also reserve the right to rebalance any
STRATEGY more frequently if rebalancing is, deemed necessary and not adverse to
the interests of contract owners invested in such STRATEGY. Rebalancing a
STRATEGY may involve shifting a portion of assets out of underlying investment
portfolios with higher returns into underlying investment portfolios with
relatively lower returns. Transfers made as a result of rebalancing a STRATEGY
are not counted against your 4 free transfers per year.
 
FIXED ACCOUNT OPTIONS
 
The contract also offers seven fixed account options. Anchor National will
guarantee the interest rate earned on money you allocate to any of these fixed
account options. We currently offer fixed account options for periods of one,
three, five, seven and ten years, which we call Guarantee Periods. In Maryland
and Washington only the one year fixed account option is available. The seven
and ten year guarantee periods are not available in Oregon. Additionally, we
guarantee the interest rate for money allocated to the six-month DCA fixed
account and/or the one year DCA fixed account (the "DCA fixed accounts") which
are available only in conjunction with the Dollar Cost Averaging Program. Please
see the section on the Dollar Cost Averaging Program on the next page for
additional information about, including limitations on, the availability and
operation of the DCA fixed accounts. The DCA fixed accounts are only available
for new Purchase Payments.
 
Each guarantee period may offer a different interest rate but will never be less
than an annual effective rate of 3%. Once established the rates for specified
payments do not change during the guarantee period. The guarantee period is that
period for which we credit the applicable rate (one, three, five, seven or ten
years).
 
There are three scenarios in which you may put money into the MVA fixed account
options. In each scenario your money may be credited a different rate of
interest as follows:
 
    - Initial Rate: Rate credited to new Purchase Payments allocated to the
      fixed account when you purchase your contract.
 
    - Current Rate: Rate credited to subsequent Purchase Payments allocated to
      the fixed account.
 
    - Renewal Rate: Rate credited to money transferred from one fixed account or
      one of the STRATEGIES to another fixed account.
 
Each of these rates may differ from one and other. Although once declared the
applicable rate is guaranteed until the guarantee period expires.
 
When a guarantee period ends, you may leave your money in the same fixed
investment option. You may also reallocate your money to another fixed
investment option or to the STRATEGIES. If you want to reallocate your money to
a different fixed account option or STRATEGY, you must contact us within 30 days
after the end of the current interest guarantee period and instruct us how to
reallocate the money. We do not contact you. If we do not hear from you, your
money will remain in the same fixed account option, where it will earn interest
at the renewal rate then in effect for the fixed account option.
 
   
The DCA fixed accounts also credit a fixed rate of interest for a predetermined
amount of time. The interest rate in the 1-year or 6-month DCA fixed account is
credited for one year or six months while your investment is systematically
transferred to the variable Portfolios. The rates applicable to the DCA fixed
accounts may differ from each other and/or the other fixed account options. See
Dollar Cost Averaging page 14 for more information.
    
 
                                       12
<PAGE>
You may reallocate money to a fixed account option (other than the DCA fixed
accounts) or to any of the STRATEGIES after the end of the Guarantee Period.
However, if you do not give us different instructions within 30 days after the
end of your Guarantee Period, we will keep your money in the fixed account for
the same Guarantee Period you previously selected. You will receive the renewal
interest rate then in effect for that Guarantee Period.
 
MARKET VALUE ADJUSTMENT
 
NOTE: THE FOLLOWING DISCUSSION APPLIES TO THE 3, 5, 7 OR 10 YEAR FIXED ACCOUNT
OPTIONS, ONLY. THESE OPTIONS ARE NOT AVAILABLE IN ALL STATES. PLEASE CONTACT
YOUR FINANCIAL REPRESENTATIVE FOR MORE INFORMATION. THIS DISCUSSION DOES NOT
APPLY TO WITHDRAWALS TO PAY A DEATH BENEFIT OR CONTRACT FEES AND CHARGES.
 
If you take money out of the three, five, seven or ten year fixed account
options before the end of the guarantee period, we make an adjustment to your
contract (the "Market Value Adjustment"). This Market Value Adjustment reflects
any difference in the interest rate environment between the time you place your
money in the fixed account option and the time when you withdraw that money.
This adjustment can increase or decrease your contract value.
 
We calculate the market value adjustment by doing a comparison between current
rates and the rate being credited to you in the fixed account option. For the
current rate we use a rate being offered by us for a guarantee period that is
equal to the time remaining in the guarantee period from which you seek
withdrawal. If we are not currently offering a guarantee period for that period
of time, we determine an applicable rate by using a formula to arrive at a rate
between the interest rates currently offered for the two closest periods
available.
 
Generally, if interest rates drop between the time you put your money into the
fixed account options and the time you take it out, we credit a positive
adjustment to your contract. Conversely, if interest rates increase during the
same period, we post a negative adjustment to your contract.
 
Where the market value adjustment is negative, we first deduct the adjustment
from any money remaining in the fixed account option. If there is not enough
money in the fixed account option to meet the negative deduction, we deduct the
remainder from your withdrawal or transfer. Where the market value adjustments
is positive, we add the adjustment to your withdrawal or transfer from the fixed
account option.
 
The one year fixed account option and the DCA fixed accounts do not impose a
market value adjustment. These fixed account options are not registered under
the Securities Act of 1933 and are not subject to the provisions of the
Investment Company Act of 1940.
 
   
Please see Appendix B for more information on how we calculate the Market Value
Adjustment.
    
 
TRANSFERS DURING THE ACCUMULATION PHASE
 
Except as provided in the next sentence with respect to the DCA Account, you can
transfer money among the STRATEGIES and the fixed account options by written
request or by telephone. Although you may transfer money out of the DCA Account,
you may not transfer money into the DCA Account from any STRATEGY or any fixed
account option. You can make four transfers every year without incurring a
transfer fee. We measure a year from the anniversary of the date we issued your
contract. If you make more than four transfers in a year, there is a $25
transfer fee per transfer ($10 in Pennsylvania and Texas). Additionally,
transfers out of a multi-year fixed account option may be subject to a market
value adjustment.
 
The minimum amount you can transfer is $500 or a lesser amount if you transfer
the entire balance from a STRATEGY or a fixed account option. If any money will
remain in a STRATEGY or fixed account option after making a transfer, it must be
at least $500. Your request for transfer must clearly state which STRATEGY(IES)
and/or fixed account option(s) are involved and the amount you want to transfer.
Please see the section below on Dollar Cost Averaging for specific rules
regarding the DCA Account.
 
                                       13
<PAGE>
We will accept transfers by telephone unless you specify otherwise on your
contract application. Additionally, in the future you may be able to execute
transfers or other financial transactions over the internet. We have in place
procedures to provide reasonable assurance that instructions given to us by
telephone are genuine. Thus, we disclaim all liability for any claim, loss or
expense from any error. If we fail to use such procedures, we may be liable for
any losses due to unauthorized or fraudulent instructions.
 
Upon implementation of internet account transfers we will have appropriate
procedures in place to provide reasonable assurance that the transactions
executed are genuine. Thus, we would not be responsible for any claim, loss or
expense from any error resulting from instructions received over the internet.
If we fail to follow our procedures we may be liable for any losses due to
unauthorized or fraudulent transactions.
 
We reserve the right to modify, suspend or terminate the transfer privileges at
any time.
 
DOLLAR COST AVERAGING
 
The Dollar Cost Averaging Program allows you to systematically transfer a set
percentage or amount from any STRATEGY or the one year fixed account option (we
call these source accounts) to another STRATEGY. You can also select to transfer
the entire value in a STRATEGY or the one year fixed investment option in a
stated number of transfers. Transfers may be monthly or quarterly. You can
change the amount or frequency at any time by notifying us in writing. The
minimum transfer amount is $500, unless you use the DCA fixed accounts (see
below).
 
When you make either your initial Purchase Payment or a subsequent Purchase
Payment and want to participate in the Dollar Cost Averaging Program with that
money, you may also use a DCA fixed account as a source account. You cannot
transfer money from a STRATEGY or other fixed investment option into a DCA fixed
account.
 
When the one-year DCA fixed account is used for the DCA Program, all of your
money in the one-year DCA fixed account will be transferred to the STRATEGY(IES)
you select in either monthly or quarterly transfers (as selected by you) by the
end of the one year period for which the interest rate is guaranteed (one year
from the date of your deposit). Once selected, you cannot change the frequency.
When the six-month DCA fixed account is used, all of the money you allocate to
the six-month DCA fixed account is transferred to the STRATEGY(IES) you select
in monthly transfers by the end of the six month period for which the interest
rate is guaranteed.
 
The minimum amount that may be allocated to a DCA fixed account is $500 and the
minimum amount that may be transferred from a DCA fixed account to the
STRATEGY(IES) you select is $100. Therefore, if the amount allocated to a DCA
fixed account is such that the transfer amount under the frequency selected
would fail to meet the $100 minimum transfer requirement, the number of
transfers under the program would be reduced to comply with the minimum transfer
requirement. For example, if you allocate $500 to the six-month DCA fixed
account, your money will be transferred out over a period of five months.
 
If you want to stop participation in the Dollar Cost Averaging Program and you
are using a DCA fixed account as your source account, we will either transfer
your money to the STRATEGY(IES) or fixed investment option(s) you select, or, in
the absence of express instructions, we will transfer your money to the one year
fixed investment option which will earn interest at the rate then being offered
for new purchase payments for a period of one year.
 
By allocating amounts to the STRATEGIES on a regular schedule as opposed to
allocating the total amount at one particular time, you may be less susceptible
to the impact of market fluctuations. However, there is no assurance
that you will earn a greater profit. You are still subject to loss in a
declining market. Dollar cost averaging involves continuous investment in
securities regardless of fluctuating price levels. You should consider your
financial ability to continue to invest through periods of low prices.
 
Transfers under this program are not counted against your four free transfers
per year. In addition, any transfer to the one-year fixed investment option upon
termination of this program will not be counted against your four free
transfers.
 
                                       14
<PAGE>
We reserve the right to modify, suspend or terminate this program at any time.
 
    EXAMPLE:
 
    Assume that you want to gradually move $750 each quarter from the
    Conservative Growth STRATEGY to the Growth STRATEGY over six quarters. You
    set up dollar cost averaging and purchase Accumulation Units at the
    following values:
 
<TABLE>
<CAPTION>
 QUARTER   ACCUMULATION UNIT    UNITS PURCHASED
- ---------  -----------------  -------------------
<S>        <C>                <C>
    1          $    7.50                 100
    2          $    5.00                 150
    3          $   10.00                  75
    4          $    7.50                 100
    5          $    5.00                 150
    6          $    7.50                 100
</TABLE>
 
    You paid an average price of only $6.67 per Accumulation Unit over six
    quarters, while the average market price actually was $7.08. By investing an
    equal amount of money each month, you automatically buy more Accumulation
    Units when the market price is low and fewer Accumulation Units when the
    market price is high. This example is for illustrative purposes only.
 
PRINCIPAL ADVANTAGE PROGRAM
 
The Principal Advantage Program allows you to invest in one or more
STRATEGY(IES) without putting the amount of your principal at direct risk. The
program accomplishes this by allocating your investment strategically between
the fixed account options and STRATEGY(IES). You decide how much you want to
invest and approximately when you want a return of principal. We calculate how
much of your Purchase Payment needs to be allocated to the particular fixed
account option to ensure that it grows to an amount equal to your total
principal invested under this program. We invest the rest of your principal in
the STRATEGY(IES) of your choice.
 
We reserve the right to modify, suspend or terminate this program at any time.
 
    EXAMPLE:
 
    Assume that you want to allocate a portion of your initial Purchase Payment
    of $100,000 to the fixed account option. You want the amount allocated to
    the fixed account option to grow to $100,000 in 7 years. If the 7-year fixed
    account option is offering a 5% interest rate, we will allocate $71,069 to
    the 7-year fixed account option to ensure that this amount will grow to
    $100,000 at the end of the 7-year period. The remaining $28,931 may be
    allocated among the STRATEGY(IES), as determined by you, to provide
    opportunity for greater growth.
 
VOTING RIGHTS
 
Anchor National is the legal owner of the Seasons Series Trust shares. However,
when the underlying investment portfolios of the Seasons Series Trust solicit
proxies in conjunction with a vote of shareholders, we must obtain your
instructions on how to vote those shares. We vote all of the shares we own in
proportion to your instructions. This includes any shares we own on our own
behalf. Should we determine that we are no longer required to comply with these
rules, we will vote the shares in our own right.
 
SUBSTITUTION
 
If any of the STRATEGY(IES) become unavailable for investment, we may be
required to substitute shares of another STRATEGY. We will seek prior approval
of the SEC and give you notice before doing this.
 
                                       15
<PAGE>
ACCESS TO YOUR MONEY
- --------------------------------------------------------------------------------
 
You can access money in your contract in two ways:
 
    - by making a partial or total withdrawal, and/or;
 
    - by receiving income payments during the Income Phase. (SEE INCOME OPTIONS
      PAGE 20.)
 
Generally, we deduct a withdrawal charge applicable to any total or partial
withdrawal and a market value adjustment if a withdrawal comes from the 3, 5, 7
or 10 year fixed account options. If you withdraw your entire contract value, we
also deduct any applicable premium taxes and a contract maintenance fee. (SEE
EXPENSES PAGE 18.)
 
Your contract provides for a free withdrawal amount each year. A free withdrawal
amount is the portion of your account that we allow you to take out each year
without being charged a surrender penalty. However, upon a future full surrender
of your contract we will recoup any surrender charges which would have been due
if your free withdrawal had not been free.
 
Generally, each contract year you may withdraw up to 10% of your Purchase
Payments which are subject to a withdrawal charge free of any withdrawal charge.
This is the free withdrawal amount.
 
We calculate charges due on a total withdrawal on the day after we receive your
request and your contract. We return your contract value less any applicable
fees and charges.
 
Under most circumstances, the minimum partial withdrawals amount is $1,000. We
require that the value left in any STRATEGY or fixed account be at least $500,
after the withdrawal. You must send a written withdrawal request. Unless you
provide us with different instructions, partial withdrawals will be made in
equal amounts from each STRATEGY and fixed account option in which your contract
is invested.
 
Washington residents should consult their financial adviser for additional
information.
 
We may be required to suspend or postpone the payment of a withdrawal for any
period of time when: (1) the NYSE is closed (other than a customary weekend and
holiday closings); (2) trading with the NYSE is restricted; (3) an emergency
exists such that disposal of or determination of the value of shares of the
Portfolios is not reasonably practicable; (4) the SEC, by order, so permits for
the protection of contract owners.
 
Additionally, we reserve the right to defer payments for a withdrawal from a
fixed account option. Such deferrals are limited to six months.
 
SYSTEMATIC WITHDRAWAL PROGRAM
 
If you elect, we use money in your contract to pay you monthly, quarterly,
semi-annual or annual payments during the Accumulation Phase. Electronic
transfer of these funds to your bank account is also available. The minimum
amount of each withdrawal is $250. There must be at least $500 remaining in your
contract at all times. Withdrawals may be taxable and a 10% IRS tax penalty may
apply if you are under age 59 1/2. Any withdrawals you make using this program
count against your free withdrawal amount as described above. Withdrawals in
excess of the free withdrawal amount may incur a withdrawal charge. There is no
additional charge for participating in this program.
 
The program is not available to everyone. Please check with our Annuity Service
Center, which can provide the necessary enrollment forms. We reserve the right
to modify, suspend or terminate this program at any time.
 
                                       16
<PAGE>
WITHDRAWAL CHARGES, MARKET VALUE ADJUSTMENTS, INCOME TAXES, TAX PENALTIES AND
CERTAIN RESTRICTIONS MAY APPLY TO ANY WITHDRAWAL YOU MAKE, INCLUDING SYSTEMATIC
WITHDRAWALS.
 
MINIMUM CONTRACT VALUE
 
Where permitted by state law, we may terminate your contract if both of the
following occur: (1) your contract is less than $500 as a result of withdrawals;
and (2) you have not made any Purchase Payments during the past three years. We
will provide you with sixty days written notice. At the end of the notice
period, we will distribute the contract's remaining value to you.
 
QUALIFIED CONTRACT OWNERS
 
Certain qualified plans restrict and/or prohibit your ability to withdraw money
from your contract. (PLEASE SEE TAXES PAGE 26) for a more detailed explanation.
 
DEATH BENEFIT
- --------------------------------------------------------------------------------
 
If you should die before beginning the Income Phase of your contract, we will
pay a death benefit to your Beneficiary.
 
If you should die prior to reaching age 75 or, in the case of joint owners, if
an owner should die prior to the youngest owner reaching age 75, the death
benefit will be equal to the greater of:
 
    1.  The value of your contract at the time we receive adequate proof of
       death and the Beneficiary's election as to how the benefit should be
       paid; or
 
    2.  Total Purchase Payments less withdrawals, applicable charges, market
       value adjustments and taxes, accumulated at 3% from the date your
       contract was issued until the date of death, plus any Purchase Payments
       received, less any withdrawals, applicable charges, market value
       adjustments and taxes made or charged, after the date of death.
 
If the contract was issued after your 75th birthday or if you should die after
you reach age 75, or, in the case of joint owners, if the contract was issued
after both owners' 75th birthday or if an owner dies after the youngest owner
reaches age 75, the death benefit will be the greater of:
 
    1.  The value of your contract at the time we receive adequate proof of
       death and the Beneficiary's election as to how the death benefit will be
       paid; or
 
    2.  Total Purchase Payments received by us before age 75 (in the case of
       joint owners, before the younger owner reaches age 75) less any
       withdrawals, applicable charges, market value adjustments and taxes,
       accumulated at 3% from the date your contract was issued until your 75th
       birthday (or, if there is a joint owner, the 75th Birthday of the
       youngest owner), plus any subsequent Purchase Payments received, less any
       withdrawals, applicable charges, market value adjustments and taxes made
       or charged, after your 75th birthday.
 
The death benefit is not paid after you switch to the Income Phase. If you die
during the Income Phase, your Beneficiary will receive any remaining guaranteed
income payments in accordance with the income option you choose.
 
You select the Beneficiary to receive any amounts payable on death. You may
change the Beneficiary at any time, unless you previously made an irrevocable
Beneficiary designation. A new Beneficiary designation is not effective until we
record the change.
 
                                       17
<PAGE>
The death benefit must begin payment immediately upon receipt of all necessary
documents and, in any event, must be paid within 5 years of the date of death.
The Beneficiary may elect to have the death benefit payable in the form of an
annuity. If the Beneficiary elects an income option, it must be paid over the
Beneficiary's lifetime or for a period not extending beyond the Beneficiary's
life expectancy. Income payments must begin within one year of your death. If
the Beneficiary is the spouse of the owner, he or she can elect to continue the
contract at the then current value.
 
The death benefit will be paid out when we receive adequate proof of death: (1)
a certified copy of a death certificate; (2) a certified copy of a decree of
court of competent jurisdiction as to the finding of death; (3) a written
statement by a medical doctor who attended the deceased at the time of death; or
(4) any other proof satisfactory to us. We may also require additional
documentation or proof in order for the death benefit to be paid. If the
Beneficiary does not make a specific election as to how they want the death
benefit distributed within sixty days of our receipt of adequate proof of death,
it will be paid in a lump sum.
 
DEATH OF THE ANNUITANT
 
If the Annuitant dies before annuity payments begin, you can name a new
Annuitant. If no Annuitant is named within 30 days, you will become the
Annuitant. However, if the owner is a non-natural person (for example, a
corporation), then the death of the Annuitant will be treated as the death of
the owner, no new Annuitant may be named and the death benefit will be paid.
 
EXPENSES
- --------------------------------------------------------------------------------
 
   
There are charges and expenses associated with your contract. These charges and
expenses reduce your investment return.We will not increase the contract
maintainance fee and withdrawal charges. However, the investment charges under
your contract may increase or decrease. Some states may require that we charge
less than the amounts described below.
    
 
INSURANCE CHARGES
 
The amount of this charge is 1.40% annually, of the value of your contract
invested in the STRATEGIES. We deduct the charge daily.
 
The insurance charge compensates us for the mortality and expense risks and the
costs of contract distribution assumed by Anchor National.
 
If these charges do not cover all of our expenses, we will pay the difference.
Likewise, if these charges exceed our expenses, we will keep the difference.
 
WITHDRAWAL CHARGES
 
The contract provides a Free Withdrawal Amount every year (SEE ACCESS TO YOUR
MONEY PAGE 16). If you take money out in excess of the Free Withdrawal Amount,
you may incur a withdrawal charge.
 
We apply a withdrawal charge against each Purchase Payment you put into the
contract. After a Purchase Payment has been in the contract for seven complete
years, no withdrawal charge applies. The withdrawal charge equals a percentage
of the Purchase Payment you take out of the contract. The withdrawal charge
percentage declines each year a purchase payment is in the contract, as follows
 
<TABLE>
<CAPTION>
      YEAR           1       2       3       4       5       6       7       8
- -----------------  -----   -----   -----   -----   -----   -----   -----   -----
<S>                <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
WITHDRAWAL CHARGE    7%      6%      6%      5%      4%      3%      2%      0%
</TABLE>
 
                                       18
<PAGE>
When calculating the withdrawal charge, we treat withdrawals as coming first
from the Purchase Payments that have been in your contract the longest. However,
for tax purposes, your withdrawals are considered earnings first, then Purchase
Payments.
 
Whenever possible, we deduct the withdrawal charge from the money remaining in
your contract. If you withdraw all of your contract value, we deduct any
applicable withdrawal charges from the amount withdrawn.
 
We will not assess a withdrawal charge for money withdrawn to pay a death
benefit. We will not assess a withdrawal charge upon election to receive income
payments from your contract, except when you elect to receive income payments
using the Income Protector program. If you annuitize using the Income Protector
program, we assess the withdrawal charge on Purchase Payments remaining in your
contract which are still subject to withdrawal charges as if you fully
surrendered your contract as of the Income Benefit Date.
 
Withdrawals made prior to age 59 1/2 may result in tax penalties (SEE TAXES PAGE
26).
 
INVESTMENT CHARGES
 
Charges are deducted from the assets of the investment portfolios underlying the
STRATEGIES for the advisory and other expenses of the portfolios. THE FEE TABLES
BEGINNING ON PAGE 4 ILLUSTRATE THESE CHARGES AND EXPENSES. FOR MORE DETAILED
INFORMATION ON THESE INVESTMENT CHARGES, REFER TO THE PROSPECTUS FOR THE TRUST,
ENCLOSED OR ATTACHED.
 
CONTRACT MAINTENANCE FEE
 
During the Accumulation Phase, we subtract a contract maintenance fee from your
account once per year. This charge compensates us for the cost of contract
administration. We will deduct the $35 contract maintenance fee ($30 in North
Dakota) from your account value on your contract anniversary. If you withdraw
your entire contract value, we deduct the fee from that withdrawal.
 
If your contract value is $50,000 or more on your contract anniversary date, we
will waive the charge. This waiver is subject to change without notice.
 
TRANSFER FEE
 
We currently permit four free transfers between investment options, every
contract year. We charge you $25 for each transfer over four in any one year
($10 in Pennsylvania and Texas). We deduct the transfer fee from the STRATEGY
and/or fixed account option from which you request the transfer (SEE INVESTMENT
OPTIONS PAGE 8).
 
PREMIUM TAX
 
Certain states charge the Company a tax on the premiums you pay into the
contract. We deduct from your contract these premium tax charges. Currently we
deduct the charge for premium taxes when you take a full withdrawal or annuitize
the contract. In the future, we may assess this deduction at the time you put
Purchase Payment(s) into the contract or upon payment of a death benefit.
 
   
APPENDIX C provides more information about premium taxes.
    
 
INCOME TAXES
 
We do not currently deduct income taxes from your contract. We reserve the right
to do so in the future.
 
                                       19
<PAGE>
REDUCTION OR ELIMINATION OF CHARGES AND EXPENSES, AND ADDITIONAL AMOUNTS
CREDITED
 
Sometimes sales of the contracts to groups of similarly situated individuals may
lower our administrative and/or sales expenses. We reserve the right to reduce
or waive certain charges and expenses when this type of sale occurs. In
addition, we may also credit additional interest to policies sold to such
groups. We determine which groups are eligible for such treatment. Some of the
criteria we evaluate to make a determination are: size of the group; amount of
expected Purchase Payments; relationship existing between us and prospective
purchaser; nature of the purchase; length of time a group of contracts is
expected to remain active; purpose of the purchase and whether that purpose
increases the likelihood that our expenses will be reduced; and/or any other
factors that we believe indicate that administrative and/or sales expenses may
be reduced.
 
Anchor National may make such a determination regarding sales to its employees,
its affiliates' employees and employees of currently contracted broker-dealers;
its registered representatives and immediate family members of all of those
described.
 
We reserve the right to change or modify any such determination or the treatment
applied to a particular group, at any time.
 
INCOME OPTIONS
- --------------------------------------------------------------------------------
 
ANNUITY DATE
 
During the Income Phase, the money in your Contract is used to make regular
income payments to you. You may switch to the Income Phase any time after your
2nd contract anniversary. You select the month and year in which you want income
payments to begin. The first day of that month is the Annuity Date. You may
change your Annuity Date, so long as you do so at least seven days before the
income payments are scheduled to begin. Once you begin receiving income
payments, you cannot change your Income Option. Except to the extent discussed
under Option 5, once you begin receiving income payments you cannot otherwise
access your money through a withdrawal or surrender.
 
Income payments must begin on or before your 90th birthday or on your tenth
contract anniversary, whichever occurs later. If you do not choose an Annuity
Date, your income payments will automatically begin on this date. Certain states
may require your income payments to start earlier.
 
If the Annuity Date is past your 85th birthday, your contract could lose its
status as an annuity under Federal tax laws. This may cause you to incur adverse
tax consequences. In addition, certain Qualified contracts require you to take
minimum distributions after you reach age 70 1/2. SEE TAXES PAGE 26.
 
INCOME OPTIONS
 
Currently, this Contract offers 5 Income Options. If you elect to receive income
payments but do not select an option, your income payments will be made in
accordance with option 4 for a period of 10 years. For income payments selected
for joint lives, we pay according to option 3.
 
We base our calculation of income payments on the life of the Annuitant and the
annuity factors set forth in your contract. As the contract owner, you may
change the Annuitant at any time prior to the Annuity Date. You must notify us
if the Annuitant dies before the Annuity Date and then designate a new
Annuitant.
 
OPTION 1 - LIFE INCOME ANNUITY
 
This option provides income payments for the life of the Annuitant. Income
payments stop when the Annuitant dies.
 
                                       20
<PAGE>
OPTION 2 - JOINT AND SURVIVOR LIFE ANNUITY
 
This option provides income payments for the life of the Annuitant and for the
life of another designated person. Upon the death of either person, we will
continue to make income payments during the lifetime of the survivor. Income
payments stop whenever the survivor dies.
 
OPTION 3 - JOINT AND SURVIVOR LIFE ANNUITY WITH 10 OR 20 YEAR PERIOD CERTAIN
 
This option is similar to option 2 above, with an additional guarantee of
payments for at least 10 years. If the Annuitant and the Survivor die before all
of the guaranteed payments have been made, the remaining payments are made to
the Beneficiary under your Contract.
 
OPTION 4 - LIFE ANNUITY WITH 10 OR 20 YEAR PERIOD CERTAIN
 
This option is similar to option 1 above. In addition, this option provides a
guarantee that income payments will be made for at least 10 or 20 years. You
select the number of years. If the Annuitant dies before all guaranteed income
payments are made, the remaining income payments go to the Beneficiary under
your Contract.
 
OPTION 5 - INCOME FOR A SPECIFIED PERIOD
 
This option provides income payments for a guaranteed period ranging from 5 to
30 years. If the Annuitant dies before all of the guaranteed income payments are
made, the remaining income payments are made to the Beneficiary under your
contract. Additionally, if variable income payments are elected under this
option, you (or the Beneficiary under the contract if the Annuitant dies prior
to all guaranteed payments being made) may redeem the contract value after the
Annuity Date. The amount available upon such redemption would be the discounted
present value of any remaining guaranteed payments.
 
   
The value of an Annuity Unit, regardless of the option chosen, takes into
account the Mortality and Expense Risk Charge. Since Option 5 does not contain
an element of mortality risk, no benefit is derived from this charge.
    
 
Please read the Statement of Additional Information ("SAI") for a more detailed
discussion of the income options.
 
ALLOCATION OF INCOME PAYMENTS
 
You can choose income payments that are fixed, variable or both. If payments are
fixed, Anchor National guarantees the amounts of each payment. If the payments
are variable, the amounts are not guaranteed. They will go up and/or down based
upon the performance of your STRATEGIES.
 
FIXED OR VARIABLE INCOME PAYMENTS
 
You can choose income payments that are fixed, variable or both. If at the date
when income payments begin you are invested in the STRATEGIES only, your income
payments will be variable. If your money is only in fixed accounts at that time,
your income payments will be fixed in amount.
 
INCOME PAYMENTS
 
If you are invested in the STRATEGIES after the Annuity date, your income
payments will vary depending on four things:
 
    - for life options, your age when payments begin, and;
 
    - the value of your contract in the STRATEGIES on the Annuity Date, and;
 
    - the 3.5% assumed investment rate used in the annuity table for the
      contract, and;
 
                                       21
<PAGE>
    - the performance of the STRATEGIES in which you are invested during the
      time you receive income payments.
 
If you are invested in both the fixed account options and the STRATEGIES after
the Annuity Date, the allocation of funds between the fixed accounts and
STRATEGIES also impacts the amount of your annuity payments.
 
We make income payments on a monthly, quarterly, semi-annual or annual basis.
You instruct us to send you a check or to have the payments directly deposited
into your bank account. If state law allows, we distribute annuities with a
contract value of $5,000 or less in a lump sum. Also, if the selected income
option results in income payments of less than $50 per payment, we may decrease
the frequency of the payments, state law allowing.
 
TRANSFERS DURING THE INCOME PHASE
 
You may transfer money among the STRATEGIES during the Income Phase. Transfers
are subject to the same limitations as transfers during the Accumulation Phase.
However, you may not transfer money from the fixed account into the STRATEGIES
or from the STRATEGIES into the fixed accounts during the Income Phase. SEE
EXPENSES PAGE 18.
 
DEFERMENT OF PAYMENTS
 
We may defer making fixed payments for up to six months, or less if required by
law. Interest is credited to you during the deferral period.
 
Please read the Statement of Additional Information ("SAI") for a more detailed
discussion of the income payments.
 
THE INCOME PROTECTOR
 
If elected, this feature provides a future "safety net" in the event that, when
you choose to begin receiving annuity payments, your contract has not performed
within a historically anticipated range. The Income Protector feature offers you
the ability to receive a guaranteed fixed minimum retirement income upon
annuitization. With the Income Protector you can know the level of minimum
income that will be available to you if, when you chose to begin taking income
payments, down markets have negatively impacted your contract value. In order to
utilize the benefit of this program, you must follow the provisions discussed
below.
 
The Income Protector provides two levels of minimum retirement income. The two
available options are the Income Protector PLUS and MAX. If you enroll in the
Income Protector program, we charge a fee based on the level of protection you
select. The amount of the fee and how to enroll are described below.
 
Certain IRC restrictions on the income options available to qualified retirement
investors may have an impact on your ability to benefit from this feature.
Qualified investors should read NOTE TO QUALIFIED CONTRACT HOLDERS, below.
 
HOW WE DETERMINE THE AMOUNT OF YOUR MINIMUM GUARANTEED INCOME
 
We base the amount of minimum income available to you if you annuitize using the
Income Protector upon a calculation we call the Income Benefit Base. At the time
your enrollment in the Income Protector program becomes effective, your Income
Benefit Base is equal to your contract value. Your participation becomes
effective on either the date of issue of the contract (if elected at the time of
application) or at the contract anniversary following your enrollment in the
program.
 
The Income Benefit Base is only a calculation. It does not represent a contract
value, nor does it guarantee performance of the Variable Portfolios in which you
invest.
 
                                       22
<PAGE>
Your Income Benefit Base increases if you make subsequent Purchase Payments and
decreases if you withdraw money from your contract. The exact Income Benefit
Base calculation is equal to (a) plus (b) minus (c) where:
 
    (a) is,
 
          - for the first year of calculation, your contract value on the date
            your participation in the program became effective, or;
 
          - for each subsequent year of calculation, the Income Benefit Base on
            the prior contract anniversary, and;
 
    (b) is the sum of all subsequent Purchase Payments made into the contract
       since the last contract anniversary, and;
 
    (c) is all withdrawals and applicable fees and charges since the last
       contract anniversary (excluding any MVA), in an amount proportionate to
       the amount by which such withdrawals decreased your contract value.
 
The Income Benefit Base accumulates at one of the following annual growth rates
from the date your enrollment becomes effective through your election to begin
receiving income under the program:
 
<TABLE>
<CAPTION>
                     OPTION                                         GROWTH RATE
<S>                                               <C>
           THE INCOME PROTECTOR PLUS                                   3.25%
            The Income Protector MAX                                   5.25%
</TABLE>
 
The growth rates for the PLUS or MAX features cease on the contract anniversary
following the Annuitant's 90th birthday.
 
ENROLLING IN THE PROGRAM
 
If you decide that you want the protection offered by the Income Protector
program, you must elect the option of your choice by completing the Income
Protector Election Form available through our Annuity Service Center. You may
only elect one of the options, you cannot change your election once made, and
you cannot terminate your election. If you enroll in the program at contract
issue your Income Benefit Base will begin accumulating at the applicable growth
rate from the issue date. Otherwise, your Income Benefit Base will begin
accumulating at the applicable growth rate on the contract anniversary following
our receipt of your completed election form. In order to obtain the benefit of
the Income Protector program you may not begin the income phase for at least
seven years following your enrollment. Thus, you must make your election prior
to the later of:
 
    - your 83rd birthday, or
 
    - your 3rd anniversary.
 
STEP-UP OF YOUR INCOME BENEFIT BASE
 
You may also have the opportunity to "Step-Up" your Income Benefit Base. The
Step-Up feature allows you to increase your Income Benefit Base to the amount of
your contract value on your contract anniversary. You can only elect to Step-Up
within the 30 days before the next contract anniversary. The seven year waiting
period required prior to electing income payments through the Income Protector
is restarted if you step-up your Income Benefit Base. Thus, your last
opportunity to step-up is the later of:
 
    - your 83rd birthday, or
 
    - your 3rd anniversary
 
You must complete the appropriate portion of the contract holders Income
Protector Election Form to effect a Step-Up. The form is available from our
Annuity Service Center.
 
                                       23
<PAGE>
ELECTING TO RECEIVE INCOME PAYMENTS
 
You may elect to begin the Income Phase of your contract using the Income
Protector Program ONLY within the 30 days after the seventh or later contract
anniversary following the later of,
 
    - the effective date of your enrollment in the Income Protector program, or
 
    - the contract anniversary of your most recent Step-Up.
 
The contract anniversary prior to your election to begin receiving income
payments is your Income Benefit Date. This is the date as of which we calculate
your Income Benefit Base to use in determining your guaranteed minimum fixed
retirement income. To arrive at the minimum guaranteed fixed retirement income
available to you, we apply the annuity rates stated in your Income Protector
Endorsement for the income option you select, to your final Income Benefit Base.
You then choose if you would like to receive that income annually, quarterly or
monthly for the time guaranteed under your selected annuity option. Your final
Income Benefit Base is equal to (a) minus (b) where:
 
    (a) is your Income Benefit Base as your Income Benefit Date, and;
 
    (b) is any partial withdrawals of contract value and any charges applicable
       to those withdrawals (excluding any MVA) and any withdrawal charges
       otherwise applicable, calculated as if you fully surrender your contract
       as the Income Benefit Date, and any applicable premium taxes.
 
The income options available when using the Income Protector program to receive
your retirement income are:
 
    - Life Annuity with 10 Year Period Certain, or
 
    - Joint and 100% Survivor Annuity with 20 Year Period Certain
 
At the time you elect to begin the income phase, we will calculate your annual
income using both your final Income Benefit Base and your contract value. We
will use the same income option for each calculation, however, the annuity
factors used to calculate your income under the Income Protector will be
different. You will receive whichever provides a greater stream of income. If
you annuitize using the Income Protector your income payments will be fixed in
amount. You are not required to use the Income Protector to receive income
payments. The general provisions of your contract provide other income options.
However, we will not refund fees paid for the Income Protector if you begin
taking annuity payments under the general provisions of your contract. YOU MAY
NEVER NEED TO RELY UPON THE INCOME PROTECTOR, IF YOUR CONTRACT PERFORMS WITHIN A
HISTORICALLY ANTICIPATED RANGE. HOWEVER, PAST PERFORMANCE IS NO GUARANTEE OF
FUTURE RESULTS.
 
NOTE TO QUALIFIED CONTRACT HOLDERS
 
Qualified contracts generally require that you select an annuity income option
which does not exceed your life expectancy. That restriction, if it applies to
you, may limit the benefit of the Income Protector program. As discussed above,
in order to utilize the Income Protector you must annuitize under one of two
annuity income options. If those income options exceed your life expectancy you
may be prohibited from receiving your guaranteed fixed income under the program.
If you own a Qualified contract to which this restriction applies and you elect
the Income Protector program, you may pay for this guarantee and not be able to
realize the benefit.
 
Generally, for qualified contracts
 
    - for the Life Annuity with 10 Year Period Certain, you must annuitize
      before age 79, and
 
    - for the Joint and 100% Survivor Annuity with 20 Year Period Certain, both
      Annuitants must be 70 or younger or one of the annuitants must be 65 or
      younger upon annuitization. Other age combinations may be available.
 
You should consult your tax advisor for information concerning your particular
circumstances.
 
                                       24
<PAGE>
FEES ASSOCIATED WITH THE INCOME PROTECTOR
 
We charge a fee for the Income Protector program, as follows:
 
<TABLE>
<CAPTION>
                     OPTION                            FEE AS A % OF YOUR INCOME BENEFIT BASE
<S>                                               <C>
             Income Protector PLUS                                      .15%
              Income Protector MAX                                      .30%
</TABLE>
 
Since the Income Benefit Base is only a calculation and does not provide a
contract value, we deduct the fee from your actual contract value beginning on
the contract anniversary on which your enrollment in the program becomes
effective.
 
If you enroll in the Income Protector program at contract issue, we begin
deducting the annual fee for the PLUS or MAX option on the contract anniversary
when your enrollment becomes effective. If you elect to participate in the
Income Protector program at some time after contract issue, we begin deducting
the annual fee on the contract anniversary following of or following election.
 
After a Step-Up, the fee for the Income Protector MAX or PLUS will be based on
your Stepped-Up Income Benefit Base, and will be deducted from your contract
value beginning on the effective date of the step-up.
 
We will deduct the charge from your contract value on every contract anniversary
up to and including your Income Benefit Date. Additionally, we deduct the entire
annual fee from any full surrender of your contract requested prior to your
contract anniversary.
 
HYPOTHETICAL EXAMPLE OF THE OPERATION OF THE INCOME PROTECTOR
 
This table assumes $100,000 initial investment in a non-qualified contract with
no withdrawals, additional payments or premium taxes, no step-up; and the
election of optional income protector benefits at contract issue.
 
This table assumes a $100,000 initial investment in a non qualified contract
with no further premiums, no withdrawals, no step-ups and no premium taxes; and
the election of optional Income Protector alternatives at contract issue.
 
<TABLE>
<CAPTION>
<S>                <C>        <C>        <C>        <C>        <C>        <C>
                      ANNUAL INCOME IF YOU ANNUITIZE ON THE FOLLOWING
 IF AT ISSUE YOU                  CONTRACT ANNIVERSARIES:                   BENEFIT
     ARE...           1-6         7         10         15         20         LEVEL
      Male            N/A       8,046      9,633     12,971     17,313        Plus
     age 60*          N/A       9,202     11,670     17,296     25,410        Max
     Female           N/A       7,145      8,542     11,652     15,948        Plus
     Age 60*          N/A       8,172     10,349     15,538     23,407        Max
 Male, Age 60**       N/A       6,290      7,353      9,442     11,785        Plus
 Female, Age 60       N/A       7,194      8,908     12,590     17,296        Max
</TABLE>
 
*   10 Year and Life
 
**  Joint and 100% Survivor with 20 Year Certain
 
The Income Protector may not be available in your state. Please consult your
financial adviser for information regarding availability of this program in your
state.
 
                                       25
<PAGE>
TAXES
- --------------------------------------------------------------------------------
 
NOTE: WE PREPARED THE FOLLOWING INFORMATION ON TAXES AS A GENERAL DISCUSSION OF
THE SUBJECT. IT IS NOT TAX ADVICE. WE CAUTION YOU TO SEEK COMPETENT TAX ADVICE
ABOUT YOUR OWN CIRCUMSTANCES. WE DO NOT GUARANTEE THE TAX STATUS OF YOUR
ANNUITY. TAX LAWS CONSTANTLY CHANGE, THEREFORE WE CANNOT GUARANTEE THAT THE
INFORMATION CONTAINED HEREIN IS COMPLETE AND/OR ACCURATE.
 
ANNUITY CONTRACTS IN GENERAL
 
The Internal Revenue Code ("IRC") provides for special rules regarding the tax
treatment of annuity contracts. Generally, taxes on the earnings in your annuity
contract are deferred until you take the money out. Different rules apply
depending on how you take the money out and whether your contract is Qualified
or Non-qualified.
 
   
If you do not purchase your contract under a pension plan, a specially sponsored
employer program or an individual retirement account, your contract is referred
to as a Non-qualified contract. A Non-qualified contract receives different tax
treatment than a Qualified contract. In general, your cost basis in a
Non-qualified contract is equal to the Purchase Payments you put into the
contract. You have already been taxed on the cost basis in your contract.
Qualified retirement investments automatically provide the deferral regardless
of whether the underlying contract is an annuity.
    
 
If you purchase your contract under a pension plan, a specially sponsored
employer program or as an individual retirement account, your contract is
referred to as a Qualified contract. Examples of qualified plans are: Individual
Retirement Accounts ("IRAs"), Roth IRAs, Tax-Sheltered Annuities (referred to as
403(b) contracts), H.R. 10 Plans (referred to as Keogh Plans) and pension and
profit sharing plans, including 401(k) plans. Typically you have not paid any
tax on the Purchase Payments used to buy your contract and therefore, you have
no cost basis in your contract.
 
TAX TREATMENT OF DISTRIBUTIONS--NON-QUALIFIED CONTRACTS
 
If you make a withdrawal from a Non-qualified contract, the IRC treats such a
withdrawal as first coming from the earnings and then as coming from your
Purchase Payments. For annuity payments, any portion of each payment that is
considered a return of your Purchase Payment will not be taxed. Withdrawn
earnings are treated as income to you and are taxable. The IRC provides for a
10% penalty tax on any earnings that are withdrawn other than in conjunction
with the following circumstances: (1) after reaching age 59 1/2; (2) when paid
to your Beneficiary after you die; (3) after you become disabled (as defined in
the IRC); (4) in a series of substantially equal installments made for your life
or for the joint lives of you and you Beneficiary; (5) under an immediate
annuity; or (6) which come from Purchase Payments made prior to August 14, 1982.
 
TAX TREATMENT OF DISTRIBUTIONS--QUALIFIED CONTRACTS
 
Generally, you have not paid any taxes on the Purchase Payments used to buy a
Qualified contract. Any amount of money you take out as a withdrawal or as
income payments is taxable income. The IRC further provides for a 10% penalty
tax on any withdrawal or income payment paid to you other than in conjunction
with the following circumstances: (1) after reaching age 59 1/2; (2) when paid
to your Beneficiary after you die; (3) after you become disabled (as defined in
the IRC); (4) in a series of substantially equal installments made for your life
or for the joint lives of you and your Beneficiary; (5) to the extent such
withdrawals do not exceed limitations set by the IRC for amounts paid during the
taxable year for medical care; (6) to fund higher education expenses (as defined
in IRC); (7) to fund certain first-time home purchase expenses; and, except in
the case of an IRA; (8) when you separate from service after attaining age 55;
and (9) when paid to an alternate payee pursuant to a qualified domestic
relations order.
 
                                       26
<PAGE>
The IRC limits the withdrawal of Purchase Payments from certain Tax-Sheltered
Annuities. Withdrawals can only be made when you: (1) reach age 59 1/2; (2)
leave your job; (3) die; (4) becomes disabled (as defined in the IRC); or (5) in
the case of hardship. In the case of hardship, you can only withdraw Purchase
Payments.
 
MINIMUM DISTRIBUTIONS
 
If you have a Qualified contract, distributions must begin by April 1 of the
calendar year following the later of (1) the calendar year in which you attain
age 70 1/2 or (2) the calendar year in which you retire. Failure to satisfy the
minimum distribution requirements may result in a tax penalty. You should
contact your tax advisor for more information.
 
DIVERSIFICATION
 
The IRC imposes certain diversification requirements on the underlying
investments for a variable annuity. We believe that the underlying Portfolios'
management monitors the variable Portfolios so as to comply with these
requirements. To be treated as a variable annuity for tax purposes, the
underlying investments must meet these requirements.
 
The diversification regulations do not provide guidance as to the circumstances
under which you, because of the degree of control you exercise over the
underlying investments, and not Anchor National, would be considered the owner
of the shares of the Portfolios. It is unknown to what extent owners are
permitted to select investments, to make transfers among Portfolios or the
number and type of Portfolios owners may select from. If any guidance is
provided which is considered a new position, then the guidance would generally
be applied prospectively. However, if such guidance is considered not to be a
new position, it may be applied retroactively. This would mean you, as the owner
of the contract, could be treated as the owner of the underlying variable
investment Portfolios. Due to the uncertainty in this area, we reserve the right
to modify the contract in an attempt to maintain favorable tax treatment.
 
                                       27
<PAGE>
PERFORMANCE
- --------------------------------------------------------------------------------
 
From time to time we will advertise the performance of the STRATEGIES. Any such
performance results are based on historical earnings and are not intended to
indicate future performance.
 
For each STRATEGY we will show performance against a comparison index which is
made up of the S&P 500 Index, the Lehman Brothers Corporate/Government Index and
the Lipper Money Market Index. The comparison index will blend the referenced
indices in proportion to the neutral allocation of stocks, bonds and cash within
each STRATEGY as indicated on pages 9 and 10 of this prospectus.
 
Additionally, we may show performance of each STRATEGY in comparison to various
appropriate indexes and the performance of other similar variable annuity
products with similar objectives as reported by such independent reporting
services as Morningstar, Inc., Lipper Analytical Services, Inc. and the Variable
Annuity Research Data Service ("VARDS").
 
Please see the Statement of Additional Information for additional information
regarding the methods used to calculate performance data.
 
   
Anchor National may also advertise the rating and other information assigned to
it by independent industry ratings organizations. Some of those organizations
are A.M. Best Company ("A.M. Best"), Moody's Investor's Service ("Moody's"),
Standard & Poor's Insurance Rating Services ("S&P"), and Duff & Phelps. A.M.
Best's and Moody's ratings reflect their current opinion of our financial
strength and performance in comparison to others in the life and health
insurance industry. S&P's and Duff & Phelps' ratings measure the ability of an
insurance company to meet its obligations under insurance policies it issues.
These two ratings do not measure the insurer's ability to meet non-policy
obligations. Ratings in general do not relate to the performance of the
STRATEGIES.
    
 
OTHER INFORMATION
- --------------------------------------------------------------------------------
 
Anchor National is a stock life insurance company originally organized under the
laws of the state of California in April 1965. On January 1, 1996, Anchor
National redomesticated under the laws of the state of Arizona.
 
Anchor National and its affiliates, SunAmerica Life Insurance Company, First
SunAmerica Life Insurance Company, CalAmerica Life Insurance Company, SunAmerica
National Life Insurance Company, SunAmerica Asset Management, Imperial Premium
Finance, Inc., Resources Trust Company, and five broker-dealers, specialize in
retirement savings and investment products and services. Business focuses
includes, fixed and variable annuities, mutual funds, premium finance,
broker-dealer services and trust administration services.
 
THE SEPARATE ACCOUNT
 
Anchor National originally established a separate account, Variable Annuity
Account Five (the "Separate Account"), under Arizona law on July 8, 1996. The
Separate Account is registered with the SEC as a unit investment trust under the
Investment Company Act of 1940, as amended.
 
Anchor National owns the assets in the Separate Account. However, the assets in
the Separate Account are not chargeable with liabilities arising out of any
other business conducted by Anchor National. Income gains and losses (realized
and unrealized) resulting from assets in the Separate Account are credited to or
charged against the Separate Account without regard to other income, gains or
losses of Anchor National.
 
                                       28
<PAGE>
THE GENERAL ACCOUNT
 
Money allocated to the fixed account options goes into Anchor National's general
account. The general account consists of all of Anchor National's assets other
than assets attributable to a separate account. All of the assets in the general
account are chargeable with the claims of any Anchor National contract holders
as well as all of its creditors. The general account funds are invested as
permitted under state insurance laws.
 
DISTRIBUTION OF THE CONTRACT
 
Registered representatives of broker-dealers sell the contract. We pay
commissions to these representatives for the sale of the contracts. We do not
expect the total commissions to exceed 7.25% of your Purchase Payments. We may
also pay a bonus to representatives for contracts which stay active for a
particular period of time, in addition to standard commissions. We do not deduct
commissions paid to registered representatives directly from your Purchase
Payments.
 
From time to time, we may pay or allow additional promotional incentives in the
form of cash or other compensation. We reserve the right to offer these
additional incentives only to certain broker-dealers that sell or are expected
to sell, certain minimum amounts of the contract, or other contracts offered by
us. Promotional incentives may change at any time.
 
SunAmerica Capital Services, Inc., 733 Third Avenue, 4th Floor, New York, New
York 10017 distributes the contracts. SunAmerica Capital Services is an
affiliate of Anchor National, and is a registered as a broker-dealer under the
Exchange Act of 1934 and a member of the National Association of Securities
Dealers, Inc.
 
No underwriting fees are paid in connection with the distribution of the
contracts.
 
ADMINISTRATION
 
We are responsible for the administrative servicing of your contract. Please
contact our Annuity Service Center at 1-800-445-SUN2, if you have any comment,
question or service request.
 
We send out transaction confirmations and quarterly statements. It is your
responsibility to review these documents carefully and notify us of any
inaccuracies immediately. We investigate all inquiries. To the extent that we
believe we made an error, we retroactively adjust your contract, provided you
notify us within 30 days of receiving the transaction confirmation or quarterly
statement. Any other adjustments we deem warranted are made as of the time we
receive notice of the error.
 
YEAR 2000
 
We rely significantly on computer systems and applications in our daily
operations. Many of our systems are not presently year 2000 compliant, which
means that because they have historically used only two digits to identify the
year in a date, they will fail to distinguish dates in the "2000s" from dates in
the "1900s." Anchor National's business, financial condition and results of
operations could be materially and adversely affected by the failure of our
systems and applications (and those operated by third parties interfacing with
our systems and applications) to properly operate or manage these dates.
 
   
Anchor National has a coordinated plan to repair or replace these noncompliant
systems and to obtain similar assurances from third parties interfacing with our
systems and applications. In fiscal 1997, the Company's parent recorded a $15.0
million provision for estimated programming costs to make necessary repairs of
certain specific noncompliant systems of which $6.2 million was allocated to
Anchor National. Anchor National's management is making expenditures which we
expect will ultimately total $5.0 million to replace certain other noncompliant
systems. Total expenditures relating to the replacement of noncompliant systems
will be capitalized by the
    
 
                                       29
<PAGE>
   
Company as software costs and will be amortized over future periods. Both phases
of the project are progessing according to plan and were substantially completed
by the end of calendar 1998. Testing of both the repaired and replacement
systems is being conducted during calendar 1999.
    
 
In addition, we distributed a year 2000 questionnaire to our significant
suppliers, distributors, financial institutions, lessors and others we do
business with to evaluate their year 2000 compliance plans and state of
readiness and to determine how our systems and applications may be affected by
their failure to solve their own year 2000 issues. To date, however, we have
only received preliminary feedback from such parties and have not independently
confirmed any information received from other parties with respect to the year
2000 issues. Therefore, we cannot assure that such other parties will complete
their year 2000 conversions in a timely fashion or will not suffer a year 2000
business disruption that may adversely affect our financial condition and
results of operations.
 
Because we expect to complete our year 2000 conversion prior to any potential
disruption to our business, we have not developed a comprehensive year 2000
contingency plan. Anchor National closely monitors the progression of its plan
for compliance, and if necessary, would devote additional resources to assure
the timely completion of our year 2000 plan. If we determine that our business
is at material risk of disruption due to the year 2000 issue or anticipate that
we will not complete our year 2000 conversion in a timely fashion, we will work
to enhance our contingency plans.
 
The above statements are forward-looking. The costs of our year 2000 conversion,
the date which we have set to complete such conversion and the possible risks
associated with the year 2000 issue are based on our current estimates and are
subject to various uncertainties that could cause the actual results to differ
materially from our expectations. Such uncertainties include, among others, our
success in identifying systems and applications that are not year 2000
compliant, the nature and amount of programming required to upgrade or replace
each of the affected systems and applications, the availability of qualified
personnel, consultants and other resources, and the success of the year 2000
conversion efforts of others.
 
LEGAL PROCEEDINGS
 
There are no pending legal proceedings affecting the Separate Account. Anchor
National and its subsidiaries engage in various kinds of routine litigation. In
management's opinion, these matters are not of material importance to their
respective total assets nor are they material with respect to the Separate
Account.
 
CUSTODIAN
 
   
State Street Bank and Trust Company, 255 Franklin Street, Boston, Massachusetts
02110, serves as the custodian of the assets of the Separate Account. Anchor
National pays State Street Bank for services provided, based on a schedule of
fees.
    
 
   
REGISTRATION STATEMENT
    
 
   
A registration statement has been filed with the SEC under the Securities Act of
1933 relating to the contract. This prospectus does not contain all the
information in the registration statement as permitted by SEC regulations. The
omitted information can be obtained from the SEC's principal office in
Washington, D.C., upon payment of a prescribed fee.
    
 
   
INDEPENDENT ACCOUNTANTS
    
- --------------------------------------------------------------------------------
 
   
The consolidated financial statements of Anchor National Life Insurance Company
as of September 30, 1998 and 1997 and for each of the three years in the period
ended September 30, 1998 included in the Statement of Additional Information
have been so included in reliance on the report of PricewaterhouseCoopers LLP,
independent accountants, given on the authority of said firm as experts in
auditing and accounting.
    
 
                                       30
<PAGE>
TABLE OF CONTENTS OF
STATEMENT OF ADDITIONAL INFORMATION
 
<TABLE>
<S>                                                                                             <C>
Separate Account..............................................................................          3
 
General Account...............................................................................          3
 
Performance Data..............................................................................          4
 
Annuity Payments..............................................................................          8
 
Annuity Unit Values...........................................................................          8
 
Taxes.........................................................................................         11
 
Distribution of Contracts.....................................................................         14
 
Financial Statements..........................................................................         15
</TABLE>
 
                                       31
<PAGE>
APPENDIX A - CONDENSED FINANCIAL INFORMATION
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                                         FISCAL YEAR
                                                                                           3/31/99
                                                                     INCEPTION TO        TO BE FILED
STRATEGIES                                                             3/31/98          BY AMENDMENT
- ----------------------------------------------------------------  ------------------  -----------------
<S>                                                               <C>                 <C>
- -------------------------------------------------------------------------------------------------------
 
Growth (Inception Date 4/15/97)
  Beginning AUV.................................................            10.00
  End AUV.......................................................            13.09
  Ending Number of AUs..........................................        3,950,133
- -------------------------------------------------------------------------------------------------------
 
Moderate Growth (Inception Date 4/15/97)
  Beginning AUV.................................................            10.00
  End AUV.......................................................            12.76
  Ending Number of AUs..........................................        3,639,458
- -------------------------------------------------------------------------------------------------------
 
Balanced Growth (Inception Date 4/15/97)
  Beginning AUV.................................................            10.00
  End AUV.......................................................            12.44
  Ending Number of AUs..........................................        2,789,702
- -------------------------------------------------------------------------------------------------------
 
Conservative Growth (Inception Date 4/15/97)
  Beginning AUV.................................................            10.00
  End AUV.......................................................            12.06
  Ending Number of AUs..........................................        1,536,220
- -------------------------------------------------------------------------------------------------------
</TABLE>
    
 
                                      A-1
<PAGE>
APPENDIX B - MARKET VALUE ADJUSTMENT
- --------------------------------------------------------------------------------
 
The market value adjustment reflects the impact that changing interest rates
have on the value of money invested at a fixed interest rate. The longer the
period of time remaining in the term you initially agreed to leave your money in
the fixed investment option, the greater the impact of changing interest rates.
The impact of the market value adjustment can be either positive or negative,
and is computed by multiplying the amount withdrawn, transferred or annuitized
by the following factor:
 
                 [(1+I/(1+J+0.005*)](to the power of N/12) - 1
 
                      THE MARKET VALUE ADJUSTMENT FORMULA
 
                          MAY DIFFER IN CERTAIN STATES
 
where:
 
                I is the interest rate you are earning on the money invested in
the fixed investment option;
 
   
                J is the Initial interest rate then currently available for the
period of time equal to the number of years remaining in the term you initially
agreed to leave your money in the fixed investment option; and
    
 
                N is the number of full months remaining in the term you
initially agreed to leave your money in the fixed investment option.
 
*   In Pennsylvania this number will be zero.
 
EXAMPLES OF THE MARKET VALUE ADJUSTMENT
 
The examples below assume the following:
 
    (1) You made an initial Purchase Payment of $10,000 and allocated it to the
10-year fixed investment option at a rate of 5%;
 
    (2) You make a partial withdrawal of $4,000 when 2 1/2 years (30 months)
remain in the 10-year term you initially agreed to leave your money in the fixed
investment option (N=30); and
 
    (3) You have not made any other transfers, additional Purchase Payments, or
withdrawals.
 
No withdrawal charges are reflected because your Purchase Payment has been in
the contract for seven full years. If a withdrawal charge applies, it is
deducted before the market value adjustment. The market value adjustment is
assessed on the amount withdrawn less any withdrawal charges.
 
NEGATIVE ADJUSTMENT
 
   
Assume that on the date of withdrawal, the Initial interest rate in effect for
new Purchase Payments in the 3-year fixed investment option (2 1/2 years rounded
up to the next full year) is 6%.
    
 
The market value adjustment factor is
 
                = [(1+I)/(1+J+0.005)](to the power of N/12) - 1
 
                        = [(1.05)/(1.06+.005)](to the power of 30/12) - 1
                        = (0.985915)(2.5) - 1
                        = 0.965160 - 1
                        = -0.034840
 
The requested withdrawal amount is multiplied by the market value adjustment
factor to determine the market value adjustment:
 
                        $4,000 X (-0.034840) = -$139.36
 
                                      B-1
<PAGE>
$139.36 represents the market value adjustment that will be deducted from the
money remaining in the 10-year fixed investment option.
 
POSITIVE ADJUSTMENT
 
   
Assume that on the date of withdrawal, the Initial interest rate in effect for a
new Purchase Payments in the 3-year fixed investment option (2 1/2 years rounded
up to the next full year) is 4%.
    
 
   
The market value adjustment factor is:
    
 
                         = [(1+I/(1+J+0.005)](N/12) - 1
 
                               = [(1.05)/(1.04+.005)](30/12) - 1
                               = (1.004785)(2.5) - 1
                               = 1.012005-1
                               = +0.012005
 
The requested withdrawal amount is multiplied by the market value adjustment
factor to determine the market value adjustment:
 
                         $4,000 x (+0.012005) = +$48.02
 
$48.02 represents the market value adjustment that would be added to your
withdrawal.
 
                                      B-2
<PAGE>
APPENDIX C - PREMIUM TAXES
- --------------------------------------------------------------------------------
 
Premium taxes vary according to the state and are subject to change without
notice. In many states, there is no tax at all. Listed below are the current
premium tax rates in those states that assess a premium tax. For current
information, you should consult your tax adviser.
 
<TABLE>
<CAPTION>
                                                                                QUALIFIED   NON-QUALIFIED
STATE                                                                           CONTRACT      CONTRACT
- -----------------------------------------------------------------------------  -----------  -------------
<S>                                                                            <C>          <C>
California...................................................................         .50%         2.35%
Kentucky.....................................................................           2%            2%
Maine........................................................................           0%            2%
Nevada.......................................................................           0%          3.5%
South Dakota.................................................................           0%         1.25%
West Virginia................................................................           1%            1%
Wyoming......................................................................           0%            1%
</TABLE>
 
                                      C-1
<PAGE>
Please forward a copy (without charge) of the Seasons Variable Annuity Statement
of Additional Information to:
 
              (Please print or type and fill in all information.)
 
- --------------------------------------------------------------------------------
 
          Name
 
- --------------------------------------------------------------------------------
 
          Address
 
- --------------------------------------------------------------------------------
 
          City/State/Zip
 
- --------------------------------------------------------------------------------
Date: ___________________  Signed: _____________________________________________
 
Return to: Anchor National Life Insurance Company, Annuity Service Center, P.O.
Box 52499, Los Angeles, California 90054-0299
<PAGE>

                               Part II
                               -------

               Information Not Required in Prospectus

Item 14. Other Expenses of Issuance and Distribution.

     The following table sets forth the expenses in connection with the 
issuance and distribution of the securities being registered, other than 
underwriting discounts and commissions. All of the amounts shown are 
estimates, except the SEC registration fee.

<TABLE>
       <S>                                             <C>
        SEC registration fee . . . . . . . . . . . . . . $ 15,152
        Printing and engraving . . . . . . . . . . . . .   50,000
        Legal fees and expenses . . . . . . . . . . . .    10,000
        Rating agency fees . . . . . . . . . . . . . . .    7,500
        Miscellaneous . . . . . . . . . . . . . . . . .    10,000
                                                         ---------
           Total . . . . . . . . . . . . . . . . . . . . $ 93,259
                                                         ---------
                                                         ---------
</TABLE>

Item 15. Indemnification of Directors and Officers.

     Section 10-851 of the Arizona Corporations and Associations law permits 
the indemnification of directors, officers, employees and agents of Arizona 
corporations. Article Eight of the Company's Restated Articles of 
Incorporation, as amended and restated (the "Articles") and Article Five 
of the Company's By-Laws ("By-Laws") authorize the indemnification of 
directors and officers to the full extent required or permitted by the Laws 
of the State of Arizona, now or hereafter in force, whether such persons are 
serving the Company, or, at its request, any other entity, which 
indemnification shall include the advance of expenses under the procedures 
and to the full extent permitted by law. In addition, the Company's officers 
and directors are covered by certain directors' and officers' liability 
insurance policies maintained by the Company's parent. Reference is made to 
section 10-851 of the Arizona Corporations and Associations Law, Article 
Eight of the Articles, and Article Five of the By-Laws, which are 
incorporated herein by reference.

Item 16. Exhibits and Financial Statements Schedules.


Exhibit No.                   Description
- -----------                   -----------
   (1)     Form of Underwriting Agreement ***
   (2)     Plan of Acquisition, Reorganization, Arrangement, Liquidation or 
           Succession **
   (3)     (a)   Articles of Incorporation***
           (b)   By-Laws***
   (4)     (a)   Seasons Allocated Fixed and Variable Group Annuity 
                 Certificate ***
           (b)   Seasons Individual Fixed and Variable Annuity Contract ***
           (c)   Seasons Participant Enrollment Form ***
           (d)   Seasons Deferred Annuity Application ***
   (5)           Opinion of Counsel re:  Legality **
                 (including on Exhibit (23) (b))
   (6)           Opinion re Discount on Capital Shares **
   (7)           Opinion re Liquidation Preference **
   (8)           Opinion re Tax Matters **
   (9)           Voting Trust Agreement **
   (10)          Material Contracts **
   (11)          Statement re Computation of Per Share Earnings **
   (12)          Statement re Computation of Ratios **
   (14)          Material Foreign Patents **
   (15)          Letter re Unaudited Financial Information **
   (16)          Letter re Change in Certifying Accountant **
   (23)          (a)   Consent of Independent Accountants *
                 (b)   Consent of Attorney **
   (24)          Powers of Attorney ***
   (25)          Statement of Eligibility of Trustee **
   (26)          Invitation for Competitive Bids **
   (27)          Financial Data Schedule ****
   (28)          Information Reports Furnished to State Insurance Regulatory 
                 Authority **
   (29)          Other Exhibits **

*    Herewith
**   Not Applicable
***  Incorporated by Reference to
     Pre-Effective Amendment No. 1 to
     Registration Statement No. 333-08877
     on Form S-1 filed on March 11, 1997.
**** Incorporated by Reference to
     Post-Effective Amendment No. 4
     to this Registrant Statement on
     Form S-1 filed on February 1, 1999.
 
<PAGE>

Item 17.  Undertakings.

          The undersigned registrant hereby undertakes:

     (1)  To file, during any period in which offers or sales are being made, 
          a post-effective amendment to this registration statement:

          (i)   To include any prospectus required by Section 10(a)(3) of the 
                Securities Act of 1933;

          (ii)  To reflect in the prospectus any facts or events arising 
                after the effective date of the registration statement (or 
                the most recent post-effective amendment thereof) which, 
                individually or in the aggregate, represents a fundamental 
                change in the information set forth in the registration 
                statement;

          (iii) To include any material information with respect to the plan 
                of distribution not previously disclosed in the registration 
                statement or any material change to such information in the 
                registration statement;

     (2)  That, for the purpose of determining any liability under the 
          Securities Act of 1933, each such post-effective amendment shall 
          be deemed to be a new registration statement relating to the 
          securities offered therein, and the offering of such securities 
          at that time shall be deemed to be the initial boa fide offering 
          thereof. 

     (3)  To remove from registration by means of a post-effective amendment 
          any of the securities being registered which remain unsold at the 
          termination of the offering.

     (4)  That, for purposes of determining any liability under the 
          Securities Act of 1933, each filing of the registrant's annual 
          report pursuant to Section 13(a) or Section 15(d) of the 
          Securities Exchange Act of 1934 and, where applicable, each filing 
          of an employee benefit plan's annual report pursuant to Section 
          15(d) of the Securities Exchange Act of 1934) that is incorporated 
          by reference in the registration statement shall be deemed to be a 
          new registration statement relating to the securities offered 
          therein, and the offering of such securities at that time shall be 
          deemed to be the initial bona fide offering thereof.

<PAGE>

                             SIGNATURES

     Pursuant to the requirement of the Securities Act of 1933, the 
Registrant Certifies that it has reasonable grounds to believe that it meets 
all of the requirements for filing on Form S-3 and has duly caused this 
registration statement to be signed on its behalf by the undersigned, thereunto 
duly authorized, in the City of Los Angeles, State of California on this 14th 
day of May, 1999.


                            By: ANCHOR NATIONAL LIFE INSURANCE COMPANY


                            By:  /s/ JAY S. WINTROB
                               -----------------------------------
                                 Jay  S. Wintrob
                                 Executive Vice President


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

<TABLE>
<CAPTION>

   SIGNATURE                   TITLE                            DATE
   ---------                   -----                            ----
<S>                   <C>                               <C>

ELI BROAD*              President, Chief Executive
- ------------------         Officer, & Chairman of
Eli Broad                         Board
                        (Principal Executive Officer)

SCOTT L. ROBINSON*      Senior Vice President &
- ------------------              Director
Scott L. Robinson       (Principal Financial Officer)

N. SCOTT GILLIS*        Senior Vice President &
- ------------------             Controller
N. Scott Gillis         (Principal Accounting Officer)

JAMES R. BELARDI*                Director
- ------------------
James R. Belardi

JANA W. GREER*                   Director
- ------------------
Jana W. Greer

/s/ JAY S. WINTROB               Director
- ------------------
Jay S. Wintrob

/s/ SUSAN L. HARRIS
- ------------------               Director                   May 14, 1999
Susan L. Harris

PETER MCMILLAN, III*
- ------------------
Peter McMillan, III

JAMES W. ROWAN*                  Director
- ------------------
James W. Rowan


 *By:  /s/ SUSAN L. HARRIS   Attorney-in-Fact
     ---------------------
       Susan L. Harris

</TABLE>

       Dated: May 14, 1999

   
    

<PAGE>
   
                                 EXHIBIT INDEX
    
 
   
<TABLE>
<CAPTION>
 EXHIBIT NO.   DESCRIPTION
- -------------  ----------------------------------------------------------------
<C>            <S>                                                               <C>
    (23)       (a) Consent of Independent Accountants
</TABLE>
    



<PAGE>

                            CONSENT OF INDEPENDENT ACCOUNTANTS
                            

We hereby consent to the incorporation by reference in the Prospectus 
constituting part of this Registration Statement on Form S-3 of our report 
dated November 9, 1998 appearing on page F-2 of Anchor National Life 
Insurance Company's Annual Report on Form 10-K for the year ended September 
30, 1998.  We also consent to the incorporation by reference of our report 
dated March 11, 1999, relating to the statement of assets acquired and 
liabilities assumed in the MBL Life Assurance Corporation transaction at 
December 31, 1998, appearing on page 8 of Anchor National Life Insurance 
Company's Current Report on Form 8-K/A dated March 12, 1999.  We also consent 
to the reference to us under the heading "Independent Accountants" in such 
Prospectus.




PricewaterhouseCoopers LLP
Los Angeles, California
May 13, 1999


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