SUN LIFE ASSURANCE CO OF CANADA US
S-2, 1998-02-10
LIFE INSURANCE
Previous: CADMUS COMMUNICATIONS CORP/NEW, SC 13G, 1998-02-10
Next: SIGMA CIRCUITS INC, 10-Q, 1998-02-10



<PAGE>

                                                       REGISTRATION NO. 

    As filed with the Securities and Exchange Commission on February 10, 1998

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

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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


                                    FORM S-2
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933         [X]
                                 --------------
                  SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

             DELAWARE                           04-2461439
 (STATE OR OTHER JURISDICTION OF             (I.R.S. EMPLOYER
  INCORPORATION OR ORGANIZATION)           IDENTIFICATION NO.)

       ONE SUN LIFE EXECUTIVE PARK, WELLESLEY HILLS, MASSACHUSETTS 02181
                                 (781) 237-6030
         (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING
            AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)


                                                         COPIES TO:
 MARGARET HANKARD, SENIOR ASSOCIATE COUNSEL            DAVID N. BROWN, ESQ.
 SUN LIFE ASSURANCE COMPANY OF  CANADA (U.S.)         COVINGTON & BURLING
       RETIREMENT PRODUCTS AND SERVICES          1201 PENNSYLVANIA AVENUE N.W.
              SUITE 200                                 P.O. BOX 7566
           ONE COPLEY PLACE                         WASHINGTON, D.C. 20044
      BOSTON, MASSACHUSETTS 02116                      (202) 662-5238
            (617) 348-9615


 (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
        INCLUDING AREA CODE, OF AGENT FOR SERVICE)

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

APPROXIMATE DATE OF PROPOSED OFFERING: As soon as practicable after the 
effective date of the registration statement.

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 check the following box. [X]


                      CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
                                                                   PROPOSED
                                                    PROPOSED        MAXIMUM
  TITLE OF EACH CLASS                 AMOUNT         MAXIMUM       AGGREGATE       AMOUNT OF
  OF SECURITIES TO BE                 TO BE      OFFERING PRICE    OFFERING      REGISTRATION
     REGISTERED                     REGISTERED      PER UNIT        PRICE             FEE
<S>                                 <C>             <C>           <C>              <C>
Fixed Annuity Contract.........        *               *          $400,000,000     $118,000

</TABLE>

* These Contracts are not issued in predetermined amounts or units.

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

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>
               SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

                   Registration Statement on Form S-2
                    Cross Reference Sheet Pursuant To
                       Regulation S-K, Item 501(b)

       Form S-2 Item Number
             and Caption                   Location in Prospectus; Caption
- - - --------------------------------------  --------------------------------------
 1.  Forepart of the Registration         Cover Pages
     Statement and Outside Front Cover
     Page of Prospectus

 2.  Inside Front and Outside Back        Cover Pages; Table of Contents
     Cover Pages of Prospectus

 3.  Summary Information, Risk Factors    Cover Pages (Summary); Expense Summary
     and Ratio of Earnings to Fixed
     Charges

 4.  Use of Proceeds                      A Word About the Company, the Fixed
                                          Account,the Variable Account and the
                                          Funds

 5.  Determination of Offering Price      Not Applicable

 6.  Dilution                             Not Applicable

 7.  Selling Security Holders             Not Applicable

 8.  Plan of Distribution                 Distribution of the Contracts

 9.  Description of Securities to be      Cover Pages; A Word About the Company,
     Registered                           the Fixed Account, the Variable
                                          Account and the Funds; Purchase
                                          Payments and Contract Values During
                                          Accumulation Period; Cash Withdrawals,
                                          Withdrawal Charges and Market Value 
                                          Adjustment; Other Contractual 
                                          Provisions

10.  Interests of Named Experts and       Not Applicable
     Counsel

11.  Information with Respect to         A Word About the Company, the Fixed 
     Registrant                          Account, the Variable Account and the
                                         Funds; Other Contractual
                                         Provisions; Additional Information
                                         About the Company; The Company's 
                                         Directors and Executive Officers; 
                                         Legal Proceedings; Legal Matters; 
                                         Financial Statements



<PAGE>

       Form S-2 Item Number
             and Caption                   Location in Prospectus; Caption
- - - --------------------------------------  --------------------------------------

12.  Incorporation of Certain            Cover Pages
     Information by Reference

13.  Disclosure of Commission Position   Not Applicable
     on Indemnification for Securities
     Act Liabilities


<PAGE>
                                PART I
                  INFORMATION REQUIRED IN PROSPECTUS


Attached hereto and made a part hereof is the Prospectus dated 
February  , 1998.

                                            



<PAGE>
                                     SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
                               FEBRUARY __, 1998
 
                                    PROFILE
                                    FUTURITY
                               VARIABLE AND FIXED
                                ANNUITY CONTRACT
 
    THIS PROFILE IS A SUMMARY OF SOME OF THE MORE IMPORTANT POINTS THAT YOU
SHOULD KNOW AND CONSIDER BEFORE PURCHASING THE CONTRACT. THE CONTRACT IS MORE
FULLY DESCRIBED IN THE FULL PROSPECTUS WHICH ACCOMPANIES THIS PROFILE. PLEASE
READ THE PROSPECTUS CAREFULLY.
 
    1.  THE FUTURITY ANNUITY  The flexible payment deferred annuity contract
("Contract") is offered by Sun Life of Canada (U.S.) (the "Company") and is
designed for use in connection with retirement and deferred compensation plans,
some of which may qualify for favorable federal income tax treatment. The
Contract is intended to help you achieve your retirement savings or other
long-term investment goals. The Contract has two phases: a pay-in phase and a
pay-out phase. During the pay-in phase, any investment earnings under your
Contract accumulate on a tax-deferred basis and are only taxed as income when
withdrawn. You determine the length of the pay-in phase. During the pay-out
phase, you will receive annuity payments in amounts determined in part by the
amount of money you have accumulated under your FUTURITY Annuity during the
pay-in phase.
 
    Purchase payments may currently be allocated among 33 sub-accounts
("Sub-Accounts"), each of which invests in underlying shares of a corresponding
mutual fund or series thereof (collectively the "Funds"), and the Company's
fixed account (the "Fixed Account," and collectively with the "Sub-Accounts,"
the "Investment Options"). If you wish your investment to accumulate on a
variable basis, you may allocate your Contract value among any of the 33
Sub-Accounts that you select. The 33 Funds are listed in Section 4.
 
    If you wish your investment in the Contract to accumulate on a fixed basis,
you may allocate purchase payments to the Fixed Account for one or more preset
time periods, as may be made available by the Company from time to time
("Guarantee Periods"), as you select. The Company will credit interest on
amounts allocated to the Fixed Account at a guaranteed rate of interest to be
declared from time to time, which will be at least 3%. The actual interest rate
to be credited ("Guaranteed Interest Rate"), once determined, will be locked-in
for the duration of the applicable Guarantee Period. Amounts allocated to the
Fixed Account may be subject to a market value adjustment upon withdrawal or
transfer.
 
    The Contract is designed to meet your need for investment flexibility. You
can simultaneously invest in up to 18 of the available Investment Options,
allowing you to determine the portion of any earnings that may accumulate on a
variable or fixed basis. Until the Company begins making annuity payments under
your Contract, you can, subject to certain limitations, transfer money between
Investment Options up to 12 times each year without incurring transfer charges
or adverse tax consequences. The Company may adjust any amounts you transfer
from the Fixed Account, as described in Section 5.
 
    2.  ANNUITY PAYMENTS (THE PAY-OUT PHASE)  Just as you can elect to have your
Contract value accumulate on either a fixed or variable basis, or a combination
of both, you can elect to receive annuity payments on either a fixed or variable
basis. If you choose to have any part of your annuity payments come from the
Funds, the dollar amount of your annuity payments may fluctuate.
 
    You can select from among 4 methods of receiving either variable or fixed
annuity payments under your Contract: (1) monthly payments continuing for your
lifetime (assuming you are the annuitant); (2) monthly payments for your
lifetime, but with payments continuing to your chosen beneficiary for 5, 10, 15
or 20 years if you die before the end of the period you have selected; (3)
monthly payments for your lifetime and the life of another person (usually your
spouse) you have chosen; and (4) monthly payments for a specified number of
years (between 5 and 30), but with payments continuing to the beneficiary for
the remainder of the period specified if you die before the specified number of
years selected has elapsed. The amount applied to provide fixed annuity payments
will be held by the Company, with interest accrued at the rate determined by
<PAGE>
the Company from time to time, which will be at least 3%. Your fixed payments
will then be made in such amounts and at such times (at least over a period of 5
years) as you may agree upon with the Company and will continue until the amount
held by the Company with interest is exhausted. No lump sum settlement option is
available under the Contract. Once the pay-out period begins, you cannot change
your choice of annuity payment method.
 
    3.  PURCHASING A CONTRACT  You may purchase a Contract for $5,000 or more,
under most circumstances. You may increase the value of your investment by
adding $1,000 or more at any time during the pay-in phase. Your registered
representative can help you fill out the proper forms.
 
    4.  INVESTMENT OPTIONS  You can invest your money in any or all of the
following Investment Options:
 
<TABLE>
<S>                                                    <C>
AIM VARIABLE INSURANCE FUNDS, INC.                     MFS/SUN LIFE SERIES TRUST
  V.I. Capital Appreciation Fund                         Capital Appreciation Series
  V.I. Growth Fund                                       Emerging Growth Series
  V.I. Growth and Income Fund                            Government Securities Series
  V.I. International Equity Fund                         High Yield Series
                                                         Money Market Series
                                                         Utilities Series
THE ALGER AMERICAN FUND                                OCC ACCUMULATION TRUST
  Growth Portfolio                                       Equity Portfolio
  Income and Growth Portfolio                            Mid Cap Portfolio
  Small Capitalization Portfolio                         Small Cap Portfolio
GOLDMAN SACHS VARIABLE INSURANCE TRUST                 SALOMON BROTHERS VARIABLE SERIES FUNDS INC
  CORE Large Cap Growth Fund                             Variable Capital Fund
  CORE Small Cap Equity Fund                             Variable Investors Fund
  CORE U.S. Equity Fund                                  Variable Strategic Bond Fund
  Growth and Income Fund                                 Variable Total Return Fund
  International Equity Fund
J.P. MORGAN SERIES TRUST II                            WARBURG PINCUS TRUST
  Equity Fund                                            Emerging Markets Portfolio
  International Opportunities Portfolio                  International Equity Portfolio
  Small Company Portfolio                                Post-Venture Capital Portfolio
                                                         Small Company Growth Portfolio
LORD ABBETT SERIES FUND, INC.
  Growth and Income Portfolio
</TABLE>
 
    In addition to the variable Investment Options listed above, you may also
allocate your money to the Fixed Account for one or more pre-set Guarantee
Periods, as made available by the Company.
 
    Market conditions will determine the value of your investment in any Fund
listed above, each of which is described in the relevant Fund prospectus.
 
    5.  EXPENSES  The charges under the Contracts are as follows.
 
    During the first 5 years of a Contract, the Company imposes an Annual
Account Fee equal to the lesser of $30 or 2% of the value of the Contract. For
Contracts issued in the future this fee may change, but it will not exceed the
lesser of $50 or 2% of the value of the Contract. The Company also deducts
insurance charges (which include an administration charge) equal to 1.40% of the
average daily value of the Contract allocated among the Sub-Accounts.
 
                                       2
<PAGE>
    There are no sales charges when you purchase your Futurity Annuity. However,
if you withdraw money from your Contract, the Company will, with certain
exceptions, impose withdrawal charges. These withdrawal charges are equal to a
percentage of each purchase payment you withdraw and are determined in
accordance with the table below. The percentage varies according to the number
of complete years that have elapsed since the date you made the purchase payment
and the date you withdraw it.
 
<TABLE>
<CAPTION>
 # OF COMPLETED ACCOUNT
  YEARS SINCE PAYMENT         WITHDRAWAL CHARGE
- - - ------------------------  -------------------------
<S>                       <C>
        0-1                              6%
        2-3                              5%
        4-5                              4%
        6                                3%
        7 or more                        0%
</TABLE>
 
    If you withdraw money allocated to the Fixed Account, other than a
withdrawal made within 30 days prior to the expiration date of the Guarantee
Period you have chosen or the withdrawal of interest credited to money allocated
to the Fixed Account (other than a one-year Guarantee Period) during the current
year, the amount you withdraw will be subject to a market value adjustment. This
adjustment reflects the relationship between the guaranteed interest rate
currently declared by the Company for Guarantee Periods equal to the balance of
the Guarantee Period applicable to the amount being withdrawn and the Guaranteed
Interest Rate applicable to the amount being withdrawn. Generally, if the
applicable Guaranteed Interest Rate is lower than the rate currently in effect,
then the application of the adjustment will result in a lower cash payment upon
withdrawal. Conversely, if the applicable Guaranteed Interest Rate is higher
than the current rate, the application of the adjustment will result in a higher
cash payment.
 
    In addition to the charges the Company imposes under the Contracts, there
are investment charges (which include management fees and operating expenses)
imposed by the Funds which range from 0.56% to 1.50% of the average net assets
of the Funds, depending upon which Fund you have allocated money to under your
Contract. The investment advisers to some of the Fund have agreements to waive
or reimburse a portion of Fund expenses, without which Fund expenses could be
higher.
 
    The following chart is designed to help you understand the expenses you will
incur under your Contract. The column "Total Annual Expenses" shows the total of
the 1.40% insurance charges, the investment expenses for each Fund, and a $30
Annual Account Fee (which is represented as 0.10% of the "Total Annual Insurance
Charges" in the table below). The next two columns show two examples of the
expenses, in dollars, you would pay under a Contract. The examples assume that
you invested $1,000 in a Contract which earns 5% annually and that you withdraw
your money (1) at the end of one year and (2) at the end of 10 years. For the
first year, the Total Annual Expenses are deducted, as well as withdrawal
charges. For year 10, the example shows the aggregate of all of the annual
expenses deducted for the 10 years, but there is no withdrawal charge.
 
<TABLE>
<CAPTION>
                                                                                                              EXAMPLES:
                                                                                                           TOTAL ANNUAL
                                                TOTAL ANNUAL     TOTAL ANNUAL                       EXPENSES AT END OF:
                                                  INSURANCE          FUND        TOTAL ANNUAL
FUND                                               CHARGES         EXPENSES        EXPENSES       1 YEAR      10 YEARS
- - - ---------------------------------------------  ---------------  ---------------  -------------  -----------  -----------
<S>                                            <C>              <C>              <C>            <C>          <C>
AIM VARIABLE INSURANCE FUNDS, INC.
  V.I. Capital Appreciation Fund                      1.50%
  V.I. Growth Fund                                    1.50%
  V.I. Growth and Income Fund                         1.50%
  V.I. International Equity Fund                      1.50%
THE ALGER AMERICAN FUND
  Growth Portfolio                                    1.50%
  Income and Growth Portfolio                         1.50%
  Small Capitalization Portfolio                      1.50%
</TABLE>
 
                                       3
<PAGE>
<TABLE>
<CAPTION>
                                                                                                              EXAMPLES:
                                                                                                           TOTAL ANNUAL
                                                TOTAL ANNUAL     TOTAL ANNUAL                       EXPENSES AT END OF:
                                                  INSURANCE          FUND        TOTAL ANNUAL
FUND                                               CHARGES         EXPENSES        EXPENSES       1 YEAR      10 YEARS
- - - ---------------------------------------------  ---------------  ---------------  -------------  -----------  -----------
GOLDMAN SACHS VARIABLE INSURANCE TRUST
<S>                                            <C>              <C>              <C>            <C>          <C>
  CORE Large Cap Growth Fund                          1.50%
  CORE Small Cap Equity Fund                          1.50%
  CORE U.S. Equity Fund                               1.50%
  Growth and Income Fund                              1.50%
  International Equity Fund                           1.50%
J.P. MORGAN SERIES TRUST II
  Equity Portfolio                                    1.50%
  International Opportunities Portfolio               1.50%
  Small Company Portfolio                             1.50%
LORD ABBETT SERIES FUND, INC.
  Growth and Income Portfolio                         1.50%
MFS/SUN LIFE SERIES TRUST
  Capital Appreciation Series                         1.50%
  Emerging Growth Series                              1.50%
  Government Securities Series                        1.50%
  High Yield Series                                   1.50%
  Money Market Series                                 1.50%
  Utilities Series                                    1.50%
OCC ACCUMULATION TRUST
  Equity Portfolio                                    1.50%
  Mid Cap Portfolio                                   1.50%
  Small Cap Portfolio                                 1.50%
SALOMON BROTHERS VARIABLE SERIES FUNDS INC
  Variable Capital Fund                               1.50%
  Variable Investors Fund                             1.50%
  Variable Strategic Bond Fund                        1.50%
  Variable Total Return Fund                          1.50%
WARBURG PINCUS TRUST
  Emerging Markets Portfolio                          1.50%
  International Equity Portfolio                      1.50%
  Post-Venture Capital Portfolio                      1.50%
  Small Company Growth Portfolio                      1.50%
</TABLE>
 
    For more detailed information about Contract fees and expenses, please refer
to the fee table and discussion of Contract charges contained in the full
Prospectus which accompanies this Profile.
 
    6.  TAXES  Your earnings are not taxed until you take them out of your
Contract. If you take money out, earnings come out first and are taxed as
income. If you are younger than 59 1/2 when you take money out, you may be
charged a 10% federal penalty tax on the earnings. Annuity payments during the
pay-out phase are considered in part a return of your original investment. That
portion of each payment is not taxable as income. However, if your Contract is
funded with pre-tax or tax deductible dollars (such as with a pension or IRA
contribution), then the entire payment will be taxable. In all cases, you should
consult with your tax adviser for specific tax information.
 
    7.  ACCESS TO YOUR MONEY  You can withdraw money from your Contract at any
time during the pay-in phase. You may withdraw a portion of the value of your
Contract in each year without the imposition of a withdrawal charge. In
addition, there may be other circumstances under which the Company may waive the
withdrawal charge. After a purchase payment has been held by the Company for 7
years you may withdraw it without charge. Also, no withdrawal charge is assessed
upon annuitization or transfers. Other amounts withdrawn will be subject to a
withdrawal charge ranging from 6% to 0%. Amounts withdrawn from the Fixed
Account during a Guarantee Period may be subject to a market value adjustment.
You may be required to pay income tax and possible tax penalties on any money
you withdraw. Each purchase payment you make under your Contract has its own 7
year withdrawal charge period.
 
                                       4
<PAGE>
    8.  PERFORMANCE  The value of your Contract will increase or decrease
depending upon the investment performance of the Fund you choose. As of the date
of this Profile, the Sub-Accounts had not yet commenced operations, and
therefore no performance information is provided in this Profile.
 
    9.  DEATH BENEFIT  If the annuitant dies before the Contract reaches the
pay-out phase, the beneficiary will receive a death benefit. If the annuitant is
age 85 or less on the date coverage begins, the death benefit is equal to the
greatest of: (1) the value of the Contract on the date the death benefit
election is effective; (2) the amount that would have been payable in the event
of a full surrender of the Contract on the date the death benefit is effective;
(3) the value of the Contract on the 7 year anniversary of the Contract, plus
any purchase payments made and minus any partial withdrawals taken (and
withdrawal charges assessed) subsequent to that anniversary; and (4) the total
purchase payments made under the Contract, minus the sum of all partial
withdrawals (purchase payments and partial withdrawals will accumulate daily at
a rate equal to 5% per year until the first day of the month following the
Annuitant's 80th birthday, up to a cap equal to double the original amount of
the Purchase Payment or partial withdrawal, as applicable). If the annuitant is
age 86 or greater on the date coverage begins, the death benefit is equal to the
amount set forth in (2) above, in this Item 9.
 
10.  OTHER INFORMATION
 
    FREE LOOK.  Depending upon applicable state law, if you cancel your Contract
within 10 days after receiving it the Company will send you the value of your
Contract on the day the Company receives your request (this may be more or less
than the original purchase payment) and will not deduct a withdrawal charge.
However, if applicable state law so requires, the full amount of any purchase
payment(s) received by the Company will be refunded, the "free look" period may
be greater than 10 days and alternative methods of returning the Contract may be
acceptable.
 
    NO PROBATE.  In most cases, when you die, the Beneficiary will receive the
death benefit without going through probate. However, avoiding probate does not
mean that the Beneficiary will not have tax liability as a result of receiving
the death benefit.
 
    WHO SHOULD PURCHASE A CONTRACT?  This Contract is designed for investors
seeking long-term tax-deferred accumulation of assets, generally for retirement
or other long-term purposes. The tax-deferred feature is most attractive to
investors in high federal and state income tax brackets. You should not buy this
Contract if you are looking for a short-term investment or if you cannot risk a
decrease in the value of your investment.
 
    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 during that period.
 
    ADDITIONAL FEATURES.  The FUTURITY Annuity offers the following additional
convenient features:
 
    Dollar Cost Averaging -- You can, at no extra charge, have a specified
amount of money automatically invested in the available investment options each
month, theoretically letting you take advantage of a lower average cost per unit
over time than may be available with a one-time purchase.
 
    Asset Allocation -- One or more asset allocation programs may be made
available in connection with the Contracts, at no extra charge.
 
    11.  INQUIRIES  If you would like more information about buying a Contract,
please contact your broker or registered representative. If you have any other
questions, please contact the Company at:
 
       SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
       Retirement Products & Services
       P.O. Box 9133
       Boston, MA 02117
       Tel. No. (888) 388-8748
 
                                       5
<PAGE>
INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>
                             SUBJECT TO COMPLETION                   PRELIMINARY
 
                                                                      PROSPECTUS
                                                               FEBRUARY   , 1998
 
                                 [PRODUCT NAME]
 
               --------------------------------------------------
 
    The flexible payment deferred annuity contracts (the "Contracts") offered by
this Prospectus are designed for use in connection with retirement and deferred
compensation plans, some of which may qualify as retirement programs under
Sections 401, 403, or 408 of the Internal Revenue Code. The Contracts are issued
on either a group or individual basis by Sun Life Assurance Company of Canada
(U.S.) (the "Company"), an indirect wholly-owned subsidiary of Sun Life
Assurance Company of Canada, having its Principal Executive Offices at One Sun
Life Executive Park, Wellesley Hills, Massachusetts 02181, telephone (781)
237-6030. The Contracts provide that annuity payments will begin on a selected
future date. The Contracts provide for the accumulation of values on either a
variable basis, a fixed basis, or a fixed and variable basis and provide for
fixed and variable annuity payments as elected. In some states, Individual
Contracts may be made available on a variable basis only.
 
    The issuance of an individual Contract ("Individual Contract") will be
evidenced by the Contract. Participation in a group Contract ("Group Contract")
will be evidenced by the issuance of a certificate ("Certificate") describing
the participating individual's interest under the Group Contract. Unless
otherwise expressly indicated, references in this Prospectus to "Contracts"
include Individual Contracts, Group Contracts and Certificates issued under
Group Contracts, and references to "Participants" include both Individual
Contract owners and participating individuals under Group Contracts.
 
    The initial Purchase Payment for each Contract must be at least $5,000 and
each additional Purchase Payment must be at least $1,000, unless waived by the
Company. The prior approval of the Company is required before it will accept a
Purchase Payment in excess of $1,000,000.
 
    The Participant may elect to have values under the Contract accumulate on a
fixed basis in the Fixed Account, which pays interest at the applicable
Guaranteed Interest Rate(s) for the duration of the particular Guarantee
Period(s) selected by the Participant, or on a variable basis in Sun Life of
Canada (U.S.) Variable Account F (the "Variable Account"), a separate account of
the Company, or divided between the Fixed Account and the Variable Account. The
assets of the Variable Account are divided into Sub-Accounts. Each Sub-Account
uses its assets to purchase, at their net asset value, shares of the following
mutual funds or series thereof (the "Funds"):
 
<TABLE>
<S>                                                 <C>
AIM VARIABLE INSURANCE FUNDS, INC.                  MFS/SUN LIFE SERIES TRUST
 V.I. Capital Appreciation Fund                     Capital Appreciation Series
 V.I. Growth Fund                                   Emerging Growth Series
 V.I. Growth and Income Fund                        Government Securities Series
 V.I. International Equity Fund                     High Yield Series
                                                    Money Market Series
THE ALGER AMERICAN FUND                             Utilities Series
 Growth Portfolio
 Income and Growth Portfolio                        OCC ACCUMULATION TRUST
 Small Capitalization Portfolio                     Equity Portfolio
                                                    Mid Cap Portfolio
GOLDMAN SACHS VARIABLE INSURANCE TRUST              Small Cap Portfolio
 CORE Large Cap Growth Fund
 CORE Small Cap Equity Fund                         SALOMON BROTHERS VARIABLE SERIES FUNDS INC
 CORE U.S. Equity Fund                              Variable Capital Fund
 Growth and Income Fund                             Variable Investors Fund
 International Equity Fund                          Variable Strategic Bond Fund
                                                    Variable Total Return Fund
J.P. MORGAN SERIES TRUST II
 Equity Portfolio                                   WARBURG PINCUS TRUST
 International Opportunities Portfolio              Emerging Markets Portfolio
 Small Company Portfolio                            International Equity Portfolio
                                                    Post-Venture Capital Portfolio
LORD ABBETT SERIES FUND, INC.                       Small Company Growth Portfolio
 Growth and Income Portfolio
</TABLE>
 
                                                        (CONTINUED ON NEXT PAGE)
<PAGE>
THE CONTRACTS ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED BY,
ANY BANK, AND 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.
 
*ANY REFERENCE IN THIS PROSPECTUS TO RECEIPT BY THE COMPANY MEANS RECEIPT AT ITS
ANNUITY SERVICE MAILING ADDRESS, C/O SUN LIFE ASSURANCE COMPANY OF CANADA
(U.S.), RETIREMENT PRODUCTS AND SERVICES, P.O. BOX 9133, BOSTON, MASSACHUSETTS
02117. THIS PROSPECTUS CONTAINS THE BASIC INFORMATION YOU SHOULD KNOW BEFORE
INVESTING IN A CONTRACT. YOU SHOULD RETAIN THIS PROSPECTUS FOR FUTURE REFERENCE.
<PAGE>
Each Fund pays its investment adviser certain fees charged against the assets of
the Fund. The value of the variable portion, if any, of a Participant's Account
and the amount of variable annuity payments will vary to reflect the investment
performance of the Fund selected by the Participant and the deduction of the
contract charges described under "How the Contract Charges Are Assessed" on page
29. For more information about the Funds, see "The Funds" on page 18 and the
accompanying Fund prospectuses.
 
    If the Participant elects to have values accumulated on a fixed basis,
Purchase Payments are allocated to one or more Guarantee Periods made available
by the Company in connection with the Fixed Account with durations of from one
to ten years, as selected by the Participant. The Fixed Account is the general
account of the Company (See "The Fixed Account" on page 15). The Company will
credit interest at a rate not less than three percent (3%) per year, compounded
annually, to amounts allocated to the Fixed Account and guarantees these amounts
at various interest rates (the "Guaranteed Interest Rates") for the duration of
the Guarantee Period elected by the Participant, subject to the imposition of
any applicable withdrawal charge, Market Value Adjustment, or account
administration fee. The Company may not change a Guaranteed Interest Rate for
the duration of the Guarantee Period; however, Guaranteed Interest Rates
applicable to subsequent Guarantee Periods cannot be predicted and will be
determined at the sole discretion of the Company (subject to the minimum
guarantee). That part of the Contract relating to the Fixed Account is
registered under the Securities Act of 1933, but the Fixed Account is not
subject to the restrictions of the Investment Company Act of 1940.
 
    The Company does not deduct a sales charge from Purchase Payments. However,
if any part of a Participant's Account is withdrawn, a withdrawal charge
(contingent deferred sales charge) may be assessed by the Company. This charge
is intended to reimburse the Company for expenses relating to the distribution
of the Contracts. A portion (specified in the applicable Contract) of the
Participant's Account Value may be withdrawn in each Account Year without the
imposition of a withdrawal charge, and after a Purchase Payment has been held by
the Company for seven years it may be withdrawn without charge. Also, no
withdrawal charge is assessed upon annuitization or upon transfers. Other
amounts withdrawn, adjusted by any applicable Market Value Adjustment with
respect to the Fixed Account, will be subject to a withdrawal charge ranging
from 6.0% to 0%. In no event will the withdrawal charges assessed against a
Participant's Account exceed 6% of Purchase Payments (See "Withdrawal Charges"
on page 26).
 
    In addition, any cash withdrawal of amounts allocated to the Fixed Account,
other than a withdrawal effective within 30 days prior to the Expiration Date of
the applicable Guarantee Period or the withdrawal of interest credited to a
Guarantee Amount during the current Account Year, will be subject to a Market
Value Adjustment. The Market Value Adjustment will reflect the relationship
between the Current Rate (which is the Guaranteed Interest Rate currently
declared by the Company for Guarantee Periods equal to the balance of the
Guarantee Period applicable to the amount being withdrawn) and the Guaranteed
Interest Rate applicable to the amount being withdrawn. Generally, if the
Guaranteed Interest Rate is lower than the Current Rate, then the application of
the Market Value Adjustment will result in a lower payment upon withdrawal.
Similarly, if the Guaranteed Interest Rate is higher than the Current Rate, the
application of the Market Value Adjustment will result in a higher payment upon
withdrawal (See "Market Value Adjustment" on page 27).
 
    The Company reserves the right to defer the payment of amounts withdrawn
from the Fixed Account for a period not to exceed six months from the date
written request for such withdrawal is received by the Company.
 
    Special restrictions on withdrawals apply to Contracts used with Tax
Sheltered Annuities established pursuant to Section 403(b) of the Internal
Revenue Code (See "Section 403(b) Annuities" on page 27).
 
    In addition, under certain circumstances withdrawals may result in tax
penalties (See "Federal Tax Status"). For a discussion of cash withdrawals,
withdrawal charges and the Market Value Adjustment see "Cash Withdrawals,
Withdrawal Charges and Market Value Adjustment" beginning on page 25.
 
    On each Account Anniversary and on surrender of a Contract for full value
the Company will deduct an annual account administration fee ("Account Fee")
from the Participant's Account. The amount of this fee is $30 in Account Years
one through five; thereafter, it may be changed annually, subject to a maximum
of $50. After the Annuity Commencement Date an Account Fee of $30 will be
deducted pro rata from each variable annuity payment made during the year. In
addition, the Company makes a deduction from the Variable
 
                                       2
<PAGE>
Account at the end of each Valuation Period equal to an annual rate of 0.15% of
the daily net assets of the Variable Account. These charges are to reimburse the
Company for administrative expenses related to the issuance and maintenance of
the Contracts. The Account Fee may be waived by the Company under certain
circumstances (See "Administrative Charges" on page 30).
 
    The Company also deducts a mortality and expense risk charge at the end of
each Valuation Period equal to an annual rate of 1.25% of the daily net assets
of the Variable Account for mortality and expense risks assumed by the Company
(See "Mortality and Expense Risk Charge" on page 30).
 
    Under certain circumstances the Company may substitute shares of another
registered open-end investment company or unit investment trust both for Fund
shares already purchased by the Variable Account and as the security to be
purchased in the future. Also, upon notice to the Participant, or, in the case
of a Group Contract, the Owner and Participant, or, under any Contract, to the
Payee during the annuity period, the Company may modify the Contract if such
modification: (i) is necessary to make the Contract or the Variable Account
comply with any law or regulation issued by a governmental agency to which the
Company or the Variable Account is subject; or (ii) is necessary to assure
continued qualification of the Contract under the Internal Revenue Code or other
federal or state laws relating to retirement annuities or annuity contracts; or
(iii) is necessary to reflect a change in the operation of the Variable Account
or the Sub-Accounts; or (iv) provides additional Variable Account and/or fixed
accumulation options (See "Substituted Securities" and "Change in Operation of
Variable Account" on page 37 and "Modification" on page 37).
 
    In addition, the Contracts provide that the Company may change the
withdrawal charges, Account Fee, mortality and expense risk charges,
administrative expense charges, transfer charges, the tables used in determining
the amount of the first monthly variable annuity payment and fixed annuity
payments and the formula used to calculate the Market Value Adjustment, provided
that such modification shall apply only with respect to Participant's Accounts
established after the effective date of such modification (See "Modification" on
page 37).
 
    In the event of the death of the Annuitant prior to the Annuity Commencement
Date, the Company will pay a death benefit to the Beneficiary. If the death of
the Annuitant occurs on or after the Annuity Commencement Date, no death benefit
will be payable except as may be provided under the Annuity Option elected (See
"Death Benefit" on page 28).
 
    Annuity Payments will begin on the Annuity Commencement Date. The
Participant selects the Annuity Commencement Date, frequency of payments and the
Annuity Option (See "Annuity Provisions" on page 31).
 
    Premium taxes payable to any governmental entity will be deducted from the
Participant's Account (See "Premium Taxes" on page 30).
 
    Subject to certain conditions, and during the Accumulation Period, the
Participant may transfer amounts among the Sub-Accounts or Guarantee Periods
available under the Contract. Currently there is no charge for transfers.
Transfers (except of interest credited during the current Account Year to the
Guarantee Amount transferred) from or within the Fixed Account will be subject
to the Market Value Adjustment unless the transfer is effective within 30 days
prior to the Expiration Date of the amount transferred and other restrictions
may apply (See "Transfer Privilege; Telephone Transfers; Restriction on Market
Timers" on page 23).
 
    After the Annuity Commencement Date, the Payee may, subject to certain
restrictions, exchange the value of a designated number of Annuity Units of
particular Sub-Accounts then credited with respect to the particular Payee for
other Annuity Units, the value of which would be such that the dollar amount of
an annuity payment made on the date of the exchange would be unaffected by the
fact of the exchange (See "Exchange of Variable Annuity Units" on page 34).
 
    The Company will vote Fund shares held by the Sub-Accounts at meetings of
shareholders of the Funds, but will follow voting instructions received from
persons having the right to give voting instructions. Except in the case of a
particular Group Contract where the right to give voting instructions is
reserved by the Owner, the Participant is the person having the right to give
voting instructions prior to the Annuity Commencement Date. On or after the
Annuity Commencement Date the Payee is the person having such voting
 
                                       3
<PAGE>
rights. Any shares attributable to the Company and Fund shares for which no
timely voting instructions are received will be voted by the Company in the same
proportion as the shares for which instructions are received from persons having
such right (See "Voting of Fund Shares" on page 36).
 
    The Company will furnish Participants and such other persons having voting
rights with certain reports and statements described under "Periodic Reports" on
page 37. Such reports, other than prospectuses, will not include the Company's
financial statements.
 
    If a Participant is not satisfied with the Contract, it may be returned to
the Company at its Annuity Service Mailing Address within ten days after it was
delivered to the Participant. When the Company receives the returned Contract it
will be cancelled and the Participant's Account Value at the end of the
Valuation Period during which the Contract was received by the Company will be
refunded. However, if applicable state law so requires, the full amount of any
Purchase Payment received by the Company will be refunded, the "free look"
period may be greater than ten days and alternative methods of returning the
Contract may be acceptable.
 
                             AVAILABLE INFORMATION
 
    The Company is subject to the informational requirements of the Securities
Exchange Act of 1934 (the "1934 Act"), as amended, and in accordance therewith
files reports and other information with the Securities and Exchange Commission
(the "Commission"). Such reports and other information can be inspected and
copied at the public reference facilities of the Commission at Room 1024, 450
Fifth Street, N.W., Washington, D.C. and at the Commission's Regional Offices
located at 75 Park Place, New York, New York and Northwestern Atrium Center, 500
West Madison Street, Suite 1400, Chicago, Illinois 60661-2511. Copies of such
materials also can be obtained from the Public Reference Section of the
Commission at 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed
rates. The Commission maintains a WebSite that contains reports, proxy and
information statements and other information about the Company, which files
documents electronically with the Commission, at the following address:
http://www.sec.gov.
 
    The Company has filed registration statements (the "Registration
Statements") with the Commission under the Securities Act of 1933 relating to
the Contracts offered by this Prospectus. This Prospectus has been filed as a
part of the Registration Statements and does not contain all of the information
set forth in the Registration Statements and exhibits thereto, and reference is
hereby made to such Registration Statements and exhibits for further information
relating to the Company and the Contracts. The Registration Statements and the
exhibits thereto may be inspected and copied, and copies can be obtained at
prescribed rates, in the manner set forth in the preceding paragraph.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
    The Annual Report on Form 10-K for the year ended December 31, 1996, the
Quarterly Report on Form 10-Q for the nine months ended September 30, 1997, and
the Interim Report on Form 8-K dated January 8, 1998 heretofore filed by the
Company with the Commission under the 1934 Act are incorporated by reference in
this Prospectus.
 
    Any statement contained in a document incorporated by reference herein shall
be deemed modified or superseded hereby to the extent that a statement contained
in a later-filed document or herein shall modify or supersede such statement.
Any statement so modified or superseded shall not be deemed, except as so
modified or superseded, to constitute a part of this Prospectus.
 
    The Company will furnish, without charge, to each person to whom a copy of
this Prospectus is delivered, upon the written or oral request of such person,
copies of the documents referred to above which have been incorporated by
reference in this Prospectus, other than exhibits to such documents (unless such
exhibits are specifically incorporated by reference in the Prospectus). Requests
for such documents should be directed to the Secretary, Sun Life Assurance
Company of Canada (U.S.), One Sun Life Executive Park, Wellesley Hills,
Massachusetts 02181, telephone (800) 225-3950.
 
                                       4
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                  PAGE
<S>                                                               <C>
Definitions                                                         7
Expense Summary                                                     9
Performance Data                                                   14
This Prospectus Is a Catalog of Facts                              14
Uses of the Contract                                               14
A Word About the Company, the Fixed Account, the Variable
  Account and the Funds                                            15
    The Company                                                    15
    The Fixed Account                                              15
    The Variable Account                                           17
    The Funds                                                      18
Purchase Payments and Contract Values During Accumulation
  Period                                                           20
    Purchase Payments                                              20
    Participant's Account                                          21
    Variable Accumulation Value                                    21
    Fixed Accumulation Value                                       22
    Guarantee Periods                                              22
    Guaranteed Interest Rates                                      23
    Dollar Cost Averaging                                          23
    Asset Allocation                                               23
    Transfer Privilege; Telephone Transfers; Restriction on
     Market Timers                                                 23
    Waivers; Reduced Charges; Credits; Bonus Guaranteed
     Interest Rates                                                24
Cash Withdrawals, Withdrawal Charges and Market Value
  Adjustment                                                       25
    Cash Withdrawals                                               25
    Withdrawal Charges                                             26
    Amount of Withdrawal Charge                                    26
    Section 403(b) Annuities                                       27
    Market Value Adjustment                                        27
Death Benefit                                                      28
    Death Benefit Provided by the Contract                         28
    Election and Effective Date of Election                        28
    Payment of Death Benefit                                       29
    Amount of Death Benefit                                        29
How the Contract Charges Are Assessed                              29
    Administrative Charges                                         30
    Premium Taxes                                                  30
    Mortality and Expense Risk Charge                              30
    Withdrawal Charges                                             31
Annuity Provisions                                                 31
    Annuity Commencement Date                                      31
    Election--Change of Annuity Option                             31
    Annuity Options                                                32
    Determination of Annuity Payments                              33
    Fixed Annuity Payments                                         33
    Variable Annuity Payments                                      33
    Variable Annuity Unit Value                                    33
    Exchange of Variable Annuity Units                             34
    Annuity Payment Rates                                          34
</TABLE>
 
                                       5
<PAGE>
                         TABLE OF CONTENTS--(CONTINUED)
<TABLE>
<CAPTION>
                                                                  PAGE
<S>                                                               <C>
Other Contractual Provisions                                       34
    Payment Limits                                                 34
    Designation and Change of Beneficiary                          34
    Exercise of Contract Rights                                    35
    Change of Ownership                                            35
    Death of Participant                                           35
    Voting of Fund Shares                                          36
    Periodic Reports                                               37
    Substituted Securities                                         37
    Change in Operation of Variable Account                        37
    Splitting Units                                                37
    Modification                                                   37
    Discontinuance of New Participants                             38
    Custodian                                                      38
    Right to Return                                                38
Federal Tax Status                                                 38
    Introduction                                                   38
    Tax Treatment of the Company and the Variable Account          39
    Taxation of Annuities in General                               39
    Qualified Retirement Plans                                     41
    Pension and Profit-Sharing Plans                               41
    Tax-Sheltered Annuities                                        41
    Individual Retirement Accounts                                 41
    Roth IRAs                                                      42
Administration of the Contracts                                    42
Distribution of the Contracts                                      42
Additional Information About the Company                           43
    Selected Financial Data                                        43
    Management's Discussion and Analysis of Financial
     Condition and Results of Operations                           43
    Liquidity                                                      46
    Year 2000 Compliance                                           46
    Recent Reorganization                                          46
    Reinsurance                                                    47
    Reserves                                                       47
    Investments                                                    47
    Competition                                                    47
    Employees                                                      48
    Properties                                                     48
The Company's Directors and Executive Officers                     48
State Regulation                                                   50
Legal Proceedings                                                  51
Legal Matters                                                      51
Accountants                                                        51
Registration Statements                                            51
Financial Statements                                               53
Appendix A--Variable Accumulation Unit Value, Variable
  Annuity Unit Value and Variable Annuity Payment
  Calculations                                                     73
Appendix B--State Premium Taxes                                    74
Appendix C--Withdrawals, Withdrawal Charges and the Market
  Value Adjustment                                                 75
Appendix D--Calculation of Performance Data; Advertising and
  Sales Literature                                                 78
</TABLE>
 
                                       6
<PAGE>
                                  DEFINITIONS
 
    The following terms as used in this Prospectus have the indicated meanings:
 
    ACCOUNT YEARS AND ACCOUNT ANNIVERSARIES:  The first Account Year shall be
the period of 12 months plus a part of a month as measured from the Date of
Coverage for each Participant to the first day of the calendar month which
follows the calendar month of coverage. All Account Years and Anniversaries
thereafter shall be 12 month periods based upon such first day of the calendar
month which follows the calendar month of coverage. If, for example, the Date of
Coverage is in March, the first Account Year will be determined from the Date of
Coverage but will end on the last day of March in the following year; all other
Account Years and all Account Anniversaries will be measured from April 1.
 
    ACCUMULATION PERIOD:  The period before the Annuity Commencement Date and
during the lifetime of the Annuitant.
 
    *ANNUITANT:  The person or persons named in the Application and on whose
life the first annuity payment is to be made. The Participant may not designate
a "Co-Annuitant" unless the Participant and Annuitant are different persons. If
more than one person is so named, all provisions of the Contract which are based
on the death of the "Annuitant" will be based on the date of death of the last
survivor of the persons so named. By example, the death benefit will become due
only upon the death, prior to the Annuity Commencement Date, of the last
survivor of the persons so named. Collectively, these persons are referred to in
this Contract as "Annuitants." The Participant is not permitted to name a
"Co-Annuitant" under a Qualified Contract.
 
    *ANNUITY COMMENCEMENT DATE:  The date on which the first annuity payment
under each Certificate is to be made.
 
    *ANNUITY OPTION:  The method for making annuity payments.
 
    ANNUITY UNIT:  A unit of measure used in the calculation of the amount of
the second and each subsequent variable annuity payment from the Variable
Account.
 
    APPLICATION:  The document signed by each Participant that serves as his or
her application for participation under a Group Contract or purchase of an
Individual Contract.
 
    *BENEFICIARY:  The person or entity having the right to receive the death
benefit set forth in each Certificate and, for Non-Qualified Contracts, who is
the "designated beneficiary" for purposes of Section 72(s) of the Internal
Revenue Code in the event of the Participant's death.
 
    CERTIFICATE:  The document for each Participant which evidences the coverage
of the Participant under a Group Contract. Unless otherwise expressly indicated,
references in this Prospectus to "Contracts" include Certificates.
 
    COMPANY:  Sun Life Assurance Company of Canada (U.S.).
 
    CONTRACT APPLICATION:  The document signed by the Owner that evidences the
Owner's application for a Group Contract.
 
    DATE OF COVERAGE:  The date on which a Participant's Account becomes
effective.
 
    DUE PROOF OF DEATH:  An original certified copy of an official death
certificate, an original certified copy of a decree of a court of competent
jurisdiction as to the finding of death, or any other proof satisfactory to the
Company.
 
    FIXED ACCOUNT:  The Fixed Account consists of all assets of the Company
other than those allocated to a separate account of the Company.
 
    FIXED ANNUITY:  An annuity with payments which do not vary as to dollar
amount.
 
    FUND:  A registered management investment company, or series thereof, in
which the assets of a Sub-Account may be invested.
 
    GROUP CONTRACT:  A Contract issued by the Company on a group basis.
 
    GUARANTEE AMOUNT:  Any portion of a Participant's Account Value allocated to
a particular Guarantee Period with a particular Expiration Date (including
interest earned thereon).
 
- - - ------------------------
*As specified in the Application, unless changed.
 
                                       7
<PAGE>
    GUARANTEE PERIOD:  The period for which a Guaranteed Interest Rate is
credited.
 
    GUARANTEED INTEREST RATE:  The rate of interest credited by the Company on a
compound annual basis during any Guarantee Period.
 
    INDIVIDUAL CONTRACT:  A Contract issued by the Company on an individual
basis.
 
    ISSUE DATE:  The date on which a Group Contract becomes effective.
 
    NON-QUALIFIED CONTRACT:  A Contract used in connection with a retirement
plan which does not receive favorable federal income tax treatment under
Sections 401, 403, or 408 of the Internal Revenue Code. The Participant's
interest in the Contract must be owned by a natural person or agent for a
natural person for the Contract to receive favorable income tax treatment as an
annuity.
 
    OWNER:  The person, persons or entity entitled to the ownership rights
stated in a Group Contract and in whose name or names the Group Contract is
issued. The Owner may designate a trustee or custodian of a retirement plan
which meets the requirements of Section 401, Section 408(c), Section 408(k) or
Section 408(p) of the Internal Revenue Code to serve as legal owner of assets of
a retirement plan, but the term "Owner", as used herein, shall refer to the
organization entering into the Group Contract.
 
    PARTICIPANT:  In the case of an Individual Contract, the owner of the
Contract. In the case of a Group Contract, the person named in the Certificate
who is entitled to exercise all rights and privileges of ownership under the
Certificate, except as reserved by the Owner.
 
    PARTICIPANT'S ACCOUNT:  An account established for each Participant to which
Net Purchase Payments are credited.
 
    PARTICIPANT'S ACCOUNT VALUE:  The Variable Accumulation Value, if any, plus
the Fixed Accumulation Value, if any, of a Participant's Account for any
Valuation Period.
 
    PAYEE:  A recipient of payments under the Contract. The term includes an
Annuitant or a Beneficiary who becomes entitled to benefits upon the death of
the Annuitant.
 
    PURCHASE PAYMENT (PAYMENT):  An amount paid to the Company as consideration
for the benefits provided by the Contract.
 
    QUALIFIED CONTRACT:  A Contract used in connection with a retirement plan
which receives favorable federal income tax treatment under Sections 401, 403,
or 408 of the Internal Revenue Code of 1986, as amended.
 
    RECEIPT:  Receipt by the Company at its Annuity Service Mailing Address
shown on the cover of this Prospectus.
 
    SEVEN YEAR ANNIVERSARY:  The seventh Account Anniversary and each succeeding
Account Anniversary occurring at any seven year interval thereafter, for
example, the 14th, 21st and 28th Account Anniversaries.
 
    SUB-ACCOUNT:  That portion of the Variable Account which invests in shares
of a specific series or sub-series of a Fund.
 
    VALUATION PERIOD:  The period of time from one determination of Variable
Accumulation Unit and Annuity Unit values to the next subsequent determination
of these values. Such determination shall be made as of the close of the New
York Stock Exchange on each day the Exchange is open for trading and on such
other days on which there is a sufficient degree of trading in the portfolio
securities of the Variable Account so that the values of the Variable Account's
Accumulation Units and Annuity Units might be materially affected.
 
    VARIABLE ACCOUNT:  A separate account of the Company consisting of assets
set aside by the Company, the investment performance of which is kept separate
from that of the general assets of the Company.
 
    VARIABLE ACCUMULATION UNIT:  A unit of measure used in the calculation of
the value of the variable portion of a Participant's Account.
 
    VARIABLE ANNUITY:  An annuity with payments which vary as to dollar amount
in relation to the investment performance of specified Sub-Accounts of the
Variable Account.
 
                                       8
<PAGE>
                                EXPENSE SUMMARY
 
    The purpose of the following tables and Examples is to help Participants and
prospective purchasers to understand the costs and expenses that are borne,
directly and indirectly, by Participants WHEN PAYMENTS ARE ALLOCATED TO THE
VARIABLE ACCOUNT. The tables reflect expenses of the Variable Account as well as
of each Fund. The information set forth should be considered together with the
narrative provided under the heading "How the Contract Charges Are Assessed" in
this Prospectus, and with each Fund's prospectus. In addition to the expenses
listed below, premium taxes may be applicable.
 
                          SUMMARY OF CONTRACT EXPENSES
 
<TABLE>
 <S>                                     <C>
 PARTICIPANT TRANSACTION EXPENSES
 Sales Load Imposed on Purchases.......   $ 0
 Deferred Sales Load (as a percentage
   of Purchase Payments withdrawn)(1)
 Number of Complete Account Years
   Purchase Payment in Account
   0-1.................................     6%
   2-3.................................     5%
   4-5.................................     4%
   6...................................     3%
   7 or more...........................     0%
 Exchange fee(2).......................   $ 0
 Annual Account Fee Per Participant's
   Account(3)..........................   $30
 SEPARATE ACCOUNT ANNUAL EXPENSES
   (as a percentage of average separate
   account assets)
 Mortality and Expense Risk Fees.......  1.25%
 Administrative Expense Charge.........  0.15%
 Other Fees and Expenses of the
   Separate Account....................  0.00%
 Total Separate Account Annual
   Expenses............................  1.40%
</TABLE>
 
- - - ---------
 
(1) A portion of the Participant's Account may be withdrawn each year without
    imposition of any withdrawal charge, and after a Purchase Payment has been
    held by the Company for seven years it may be withdrawn free of any
    withdrawal charge.
 
(2) A Market Value Adjustment may be imposed on amounts transferred from or
    within the Fixed Account.
 
(3) The Annual Account Fee is the lesser of $30 and 2% of the Participant's
    Account Value in Account Years one through five; thereafter, the fee may be
    changed annually, but it may not exceed the lesser of $50 and 2% of the
    Participant's Account Value.
 
                                       9
<PAGE>
                      UNDERLYING FUND ANNUAL EXPENSES (1)
                      (AS A PERCENTAGE OF FUND NET ASSETS)
 
<TABLE>
<CAPTION>
                                                                                  TOTAL FUND
                                           MANAGEMENT                  OTHER        ANNUAL
                                              FEES      12B-1 FEES    EXPENSES     EXPENSES
                                           ----------   ----------   ----------   ----------
 <S>                                       <C>          <C>          <C>          <C>
 AIM V.I. Capital Appreciation Fund......
 AIM V.I. Growth Fund....................
 AIM V.I. Growth and Income Fund.........
 AIM V.I. International Equity Fund......
 Alger American Growth Portfolio.........
 Alger American Income and Growth
  Portfolio..............................
 Alger American Small Capitalization
  Portfolio..............................
 Goldman Sachs CORE Large Cap Growth Fund
  (2)....................................     0.70%                     0.10%        0.80%
 Goldman Sachs CORE Small Cap Equity Fund
  (2)....................................     0.75%                     0.15%        0.90%
 Goldman Sachs CORE U.S. Equity Fund
  (2)....................................     0.70%                     0.10%        0.80%
 Goldman Sachs Growth and Income Fund
  (2)....................................     0.75%                     0.15%        0.90%
 Goldman Sachs International Equity Fund
  (2)....................................     1.00%                     0.25%        1.25%
 J.P. Morgan Equity Portfolio (3)........
 J.P. Morgan International Opportunities
  Portfolio (3)..........................
 J.P. Morgan Small Company Portfolio
  (3)....................................
 Lord Abbett Growth and Income Portfolio
  (4)....................................
 MFS/Sun Life Capital Appreciation
  Series.................................
 MFS/Sun Life Emerging Growth Series.....
 MFS/Sun Life Government Securities
  Series.................................
 MFS/Sun Life High Yield Series..........
 MFS/Sun Life Money Market Series........
 MFS/Sun Life Utilities Series...........
 OCC Equity Portfolio (3)................
 OCC Mid Cap Portfolio (2)...............     0.65%                     0.35%        1.00%
 OCC Small Cap Portfolio (3).............
 Salomon Brothers Variable Capital Fund
  (2)....................................     0.85%                     0.15%        1.00%
 Salomon Brothers Variable Investors Fund
  (2)....................................     0.70%                     0.30%        1.00%
 Salomon Brothers Variable Strategic Bond
  Fund (2)...............................     0.75%                     0.25%        1.00%
 Salomon Brothers Variable Total Return
  Fund (2)...............................     0.80%                     0.20%        1.00%
 Warburg Pincus Emerging Markets
  Portfolio (2)..........................     0.45%                     0.95%        1.40%
 Warburg Pincus International Equity
  Portfolio (3)..........................
 Warburg Pincus Post-Venture Capital
  Portfolio (3)..........................
 Warburg Pincus Small Company Growth
  Portfolio (3)..........................
</TABLE>
 
- - - ---------
 
(1) Unless otherwise indicated, the information in the table is based on amounts
    incurred during the Fund's most recent fiscal year. The information relating
    to Fund expenses was provided by the Funds and has not been independently
    verified by the Company. Participants should consult the Fund prospectuses
    for more information about Fund expenses.
(2) These Funds will commence operations in 1998. Accordingly, "Other Expenses"
    is based on estimates for the current fiscal year, net of any applicable
    expense reimbursement or waiver. The investment advisers for the indicated
    Funds have voluntarily agreed to waive or reimburse a portion of the
    management fees and/or operating expenses resulting in a reduction of the
    total expenses. Absent any such waiver or reimbursement, "Management Fees,"
    "Other Expenses" and "Total Fund Annual Expenses" are expected to be: 0.70%,
    0.50% and 1.20% for the Goldman Sachs CORE Large Cap Equity Fund; 0.75%,
    1.03%, and 1.78% for the Goldman Sachs CORE Small Cap Equity Fund; 0.70%,
    0.76%, and 1.46% for the Goldman Sachs CORE U.S. Equity Fund; 0.75%, 0.76%,
    and 1.51% for the Goldman
 
                                       10
<PAGE>
    Sachs Growth and Income Fund; 1.00%, 1.22%, and 2.22% for the Goldman Sachs
    International Equity Fund; 0.80%, 0.35%, and 1.15% for the OCC Mid Cap
    Portfolio; 0.85%, 1.91% and 2.76% for the Salomon Brothers Variable Capital
    Fund; 0.70%, 1.91% and 2.61% for the Salomon Brothers Variable Investors
    Fund; 0.75%, 1.91% and 2.66% for the Salomon Brothers Variable Strategic
    Bond Fund; 0.80%, 1.91% and 2.71% for the Salomon Brothers Variable Total
    Return Fund; and 1.25%, 0.95%, and 2.20% for the Warburg Pincus Emerging
    Markets Portfolio.
(3) The investment advisers and, in certain cases, the administrators for the
    indicated Funds have voluntarily agreed to waive or reimburse a portion of
    the management fees and/or operating expenses, resulting in a reduction of
    the total expenses. Absent any such waiver or reimbursement, "Management
    Fees," "Other Expenses" and "Total Fund Annual Expenses" would have been:
       %,    %, and    % for the OCC Equity Portfolio;    %,    %, and    % for
    the OCC Small Cap Portfolio;    %,    %, and    % for the Warburg Pincus
    International Equity Portfolio;    %,    %, and    % for the Warburg Pincus
    Post-Venture Capital Portfolio; and    %,    %, and    % for the Warburg
    Pincus Small Company Growth Portfolio. Absent any waiver or reimbursement,
    "Total Fund Annual Expenses" would have been    % for the J.P. Morgan Equity
    Portfolio,    % for the J.P. Morgan International Opportunities Portfolio,
    and    % for the J.P. Morgan Small Company Portfolio.
(4) This Fund has a 12b-1 plan which provides for payments to Lord Abbett & Co.
    for remittance to a life insurance company for certain distribution expenses
    (see the Fund prospectus). The 12b-1 plan provides that such remittances, in
    the aggregate, will not exceed 0.15% on an annual basis, of the daily net
    asset value of shares of the Growth and Income Portfolio. For the current
    fiscal year, the 12b-1 fees are estimated to be    %. The examples below for
    this Portfolio reflect the estimated 12b-1 fees.
 
                                       11
<PAGE>
                                    EXAMPLE
 
    If you surrender your Contract at the end of the applicable time period, you
would pay the following expenses on a $1,000 investment, assuming a 5% annual
return on assets:
 
<TABLE>
<CAPTION>
                                           1 YEAR   3 YEARS
                                           ------   -------
 <S>                                       <C>      <C>
 AIM V.I. Capital Appreciation Fund......
 AIM V.I. Growth Fund....................
 AIM V.I. Growth and Income Fund.........
 AIM V.I. International Equity Fund......
 Alger American Growth Portfolio.........
 Alger American Income and Growth
 Portfolio...............................
 Alger American Small Capitalization
 Portfolio...............................
 Goldman Sachs CORE Large Cap Growth
 Fund....................................
 Goldman Sachs CORE Small Cap Equity
 Fund....................................
 Goldman Sachs CORE U.S. Equity Fund.....
 Goldman Sachs Growth and Income Fund....
 Goldman Sachs International Equity
 Fund....................................
 J.P. Morgan Equity Portfolio............
 J.P. Morgan International Opportunities
 Portfolio...............................
 J.P. Morgan Small Company Portfolio.....
 Lord Abbett Growth and Income
 Portfolio...............................
 MFS/Sun Life Capital Appreciation
 Series..................................
 MFS/Sun Life Emerging Growth Series.....
 MFS/Sun Life Government Securities
 Series..................................
 MFS/Sun Life High Yield Series..........
 MFS/Sun Life Money Market Series........
 MFS/Sun Life Utilities Series...........
 OCC Equity Portfolio....................
 OCC Mid Cap Portfolio...................
 OCC Small Cap Portfolio.................
 Salomon Brothers Variable Capital
 Fund....................................
 Salomon Brothers Variable Investors
 Fund....................................
 Salomon Brothers Variable Strategic Bond
 Fund....................................
 Salomon Brothers Variable Total Return
 Fund....................................
 Warburg Pincus Emerging Markets
 Portfolio...............................
 Warburg Pincus International Equity
 Portfolio...............................
 Warburg Pincus Post-Venture Capital
 Portfolio...............................
 Warburg Pincus Small Company Growth
 Portfolio...............................
</TABLE>
 
                                       12
<PAGE>
                                    EXAMPLE
 
    If you do not surrender your Contract, or if you annuitize at the end of the
applicable time period, you would pay the following expenses on a $1,000
investment, assuming a 5% annual return on assets:
 
<TABLE>
<CAPTION>
                                           1 YEAR   3 YEARS
                                           ------   -------
 <S>                                       <C>      <C>
 AIM V.I. Capital Appreciation Fund......
 AIM V.I. Growth Fund....................
 AIM V.I. Growth and Income Fund.........
 AIM V.I. International Equity Fund......
 Alger American Growth Portfolio.........
 Alger American Income and Growth
 Portfolio...............................
 Alger American Small Capitalization
 Portfolio...............................
 Goldman Sachs CORE Large Cap Growth
 Fund....................................
 Goldman Sachs CORE Small Cap Equity
 Fund....................................
 Goldman Sachs CORE U.S. Equity Fund.....
 Goldman Sachs Growth and Income Fund....
 Goldman Sachs International Equity
 Fund....................................
 J.P. Morgan Equity Portfolio............
 J.P. Morgan International Opportunities
 Portfolio...............................
 J.P. Morgan Small Company Portfolio.....
 Lord Abbett Growth and Income
 Portfolio...............................
 MFS/Sun Life Capital Appreciation
 Series..................................
 MFS/Sun Life Emerging Growth Series.....
 MFS/Sun Life Government Securities
 Series..................................
 MFS/Sun Life High Yield Series..........
 MFS/Sun Life Money Market Series........
 MFS/Sun Life Utilities Series...........
 OCC Equity Portfolio....................
 OCC Mid Cap Portfolio...................
 OCC Small Cap Portfolio.................
 Salomon Brothers Variable Capital
 Fund....................................
 Salomon Brothers Variable Investors
 Fund....................................
 Salomon Brothers Variable Strategic Bond
 Fund....................................
 Salomon Brothers Variable Total Return
 Fund....................................
 Warburg Pincus Emerging Markets
 Portfolio...............................
 Warburg Pincus International Equity
 Portfolio...............................
 Warburg Pincus Post-Venture Capital
 Portfolio...............................
 Warburg Pincus Small Company Growth
 Portfolio...............................
</TABLE>
 
    THE ABOVE EXAMPLES SHOULD NOT BE CONSIDERED A REPRESENTATION OF PAST OR
FUTURE EXPENSES, AND ACTUAL EXPENSES MAY BE GREATER OR LOWER THAN THOSE SHOWN.
 
                                       13
<PAGE>
                                PERFORMANCE DATA
 
    From time to time the Variable Account may publish reports to shareholders,
sales literature and advertisements containing performance data relating to the
Sub-Accounts. Performance data will consist of total return quotations which
will include (1) quotations for the period subsequent to the date each Sub-
Account became available for investment under the Contracts (if longer than one
year), and for recent one year and, when applicable, five and ten year periods
and (2) quotations for the same periods subsequent to the date the Fund
commenced operations. Such quotations for such periods will be the average
annual rates of return required for an initial Purchase Payment of $1,000 to
equal the actual variable accumulation value attributable to such Purchase
Payment on the last day of the period, after reflection of all applicable
withdrawal and contract charges. In addition, the Variable Account may calculate
non-standardized rates of return that do not reflect withdrawal and contract
charges. Results calculated without withdrawal and/or contract charges will be
higher. Performance figures used by the Variable Account are based on the actual
historical performance of the Funds for specified periods, and the figures are
not intended to indicate future performance. The Variable Account may also from
time to time compare its investment performance to various unmanaged indices or
other variable annuities and may refer to certain rating and other organizations
in its marketing materials. More detailed information on the computations is set
forth in Appendix D.
 
                     THIS PROSPECTUS IS A CATALOG OF FACTS
 
    This Prospectus contains information about the master group and individual
deferred annuity contracts (the "Contracts") which provide fixed benefits,
variable benefits or a combination of both. It describes their uses and
objectives, their benefits and costs, and the rights and privileges of the Owner
and Participant, as applicable. It also contains information about the Company,
the Variable Account, the Fixed Account and the Funds. It has been carefully
prepared in non-technical language to help you decide whether the purchase of a
Contract will fit the needs of your retirement plan. We urge you to read it
carefully and retain it for future reference. The Contract has appropriate
provisions relating to variable and fixed accumulation values and variable and
fixed annuity payments. A Variable Annuity and a Fixed Annuity have certain
similarities. Both provide that Purchase Payments, less certain deductions, will
be accumulated prior to the Annuity Commencement Date. After the Annuity
Commencement Date, annuity payments will be made to the Annuitant. The Company
assumes the mortality and expense risks under the Contract, for which it
receives certain amounts. The significant difference between a Variable Annuity
and a Fixed Annuity is that under a Variable Annuity, all investment risk is
assumed by the Participant or Payee and the amounts of the annuity payments vary
with the investment performance of the Variable Account; under a Fixed Annuity,
the investment risk is assumed by the Company (except in the case of early
withdrawals (See "Cash Withdrawals" and "Market Value Adjustment")) and the
amounts of the annuity payments do not vary. However, the Participant bears the
risk that the Guaranteed Interest Rate to be credited on amounts allocated to
the Fixed Account may not exceed the minimum guaranteed rate for any Guarantee
Period.
 
                              USES OF THE CONTRACT
 
    The Contract is designed for use in connection with retirement plans which
meet the requirements of Section 401 (including Section 401(k)), Section 403,
Section 408(b), Section 408(c), Section 408(k) or Section 408(p) of the Internal
Revenue Code; however, the Company may discontinue offering new Contracts in
connection with certain types of qualified plans. In addition, the Company may
begin offering Participants under Contracts used in connection with individual
retirement plans under Section 408 the opportunity to convert the Contracts into
Contracts used in connection with Roth IRAs under Section 408A, and may also
begin offering new Contracts for use in connection with Roth IRAs. Certain
federal tax advantages are currently available to retirement plans which qualify
as (1) self-employed individuals' retirement plans under Section 401; (2)
corporate or association retirement plans under Section 401; (3) annuity
purchase plans sponsored by certain tax exempt organizations or public school
systems under Section 403(b); or (4) individual retirement accounts, including
employer or association of employees individual retirement accounts under
Section 408(c), SEP-IRAs under Section 408(k), Simple Retirement Accounts under
Section 408(p), and Roth IRAs under Section 408A (See "Federal Tax Status").
 
                                       14
<PAGE>
    The Contract is also designed so that it may be used in connection with
certain non-tax-qualified retirement plans, such as payroll savings plans and
such other groups (trusteed or nontrusteed) as may be eligible under applicable
law.
 
    The Contracts are available on a group basis and, in certain states, may be
available on an individual basis. An Individual Contract is issued directly to
the owner of the Contract. A Group Contract is issued to the Owner covering all
individuals participating under the Group Contract. Each such individual
receives a Certificate which evidences his or her participation under the Group
Contract. In this Prospectus, unless otherwise indicated, both the owners of
Individual Contracts and participating individuals under Group Contracts are
referred to as Participants; the term Contracts includes Individual Contracts,
Group Contracts and Certificates issued under Group Contracts. For the purposes
of determining benefits under both Individual Contracts and Group Contracts, a
Participant's Account is established for each Participant.
 
                           A WORD ABOUT THE COMPANY,
             THE FIXED ACCOUNT, THE VARIABLE ACCOUNT AND THE FUNDS
 
THE COMPANY
 
    The Company is a stock life insurance company incorporated under the laws of
Delaware on January 12, 1970. Its Executive Office mailing address is One Sun
Life Executive Park, Wellesley Hills, Massachusetts 02181, telephone (781)
237-6030. It has obtained authorization to do business in forty-eight states,
the District of Columbia and Puerto Rico, and it is anticipated that the Company
will be authorized to do business in all states except New York. The Company
issues life insurance policies and individual and group annuities. The Company
has formed a wholly-owned subsidiary, Sun Life Insurance and Annuity Company of
New York, which issues individual fixed and combination fixed/variable annuity
contracts and group life and long-term disability insurance in New York and
which offers in New York contracts similar to the Contract offered by this
Prospectus. The Company's other active subsidiaries are Sun Capital Advisers,
Inc., a registered investment adviser, Clarendon Insurance Agency, Inc., a
registered broker-dealer that acts as the general distributor of the Contracts
and other annuity and life insurance contracts issued by the Company and its
affiliates, Sun Life of Canada (U.S.) Distributors, Inc., a registered
broker-dealer and investment adviser, New London Trust, F.S.B., a federally
chartered savings bank, Massachusetts Casualty Insurance Company, which issues
individual disability income policies, and Sun Life Financial Services Limited
which provides off-shore administrative services to the Company and Sun Life
Assurance Company of Canada "Sun Life (Canada)".
 
    Effective May 1, 1997, the Company became a wholly-owned subsidiary of the
newly established Sun Life of Canada (U.S.) Holdings, Inc. ("Life Holdco"). On
December 18, 1997, Life Holdco became a wholly-owned subsidiary of Sun Life
Assurance Company of Canada-U.S. Operations Holdings, Inc. ("U.S. Holdco"). U.S.
Holdco is a wholly-owned subsidiary of Sun Life (Canada), 150 King Street West,
Toronto, Ontario, Canada. Sun Life (Canada) is a mutual life insurance company
incorporated pursuant to Act of Parliament of Canada in 1865 and currently
transacts business in all of the Canadian provinces and territories, all states
except New York, the District of Columbia, Puerto Rico, the Virgin Islands,
Great Britain, Ireland, Hong Kong, Bermuda and the Philippines.
 
THE FIXED ACCOUNT
 
    The Fixed Account is made up of all of the general assets of the Company
other than those allocated to any separate account. Purchase Payments will be
allocated to Guarantee Periods available in connection with the Fixed Account to
the extent elected by the Participant at the time of the establishment of a
Participant's Account or as subsequently changed. In addition, all or part of
the Participant's Account Value may be transferred to Guarantee Periods
available under the Contract as described under "Transfer Privilege". Assets
supporting amounts allocated to Guarantee Periods become part of the Company's
general account assets and are available to fund the claims of all classes of
customers of the Company, including claims for benefits under Certificates.
 
    The Company will invest the assets of the Fixed Account in those assets
chosen by the Company and allowed by applicable state laws regarding the nature
and quality of investments that may be made by life insurance companies and the
percentage of their assets that may be committed to any particular type of
 
                                       15
<PAGE>
investment. In general, these laws permit investments, within specified limits
and subject to certain qualifications, in federal, state and municipal
obligations, corporate bonds, preferred and common stocks, real estate
mortgages, real estate and certain other investments.
 
    The Company intends to invest the assets of the Fixed Account primarily in
debt instruments as follows: (1) Securities issued by the United States
Government or its agencies or instrumentalities, which issues may or may not be
guaranteed by the United States Government; (2) Debt securities which have an
investment grade, at the time of purchase, within the four highest grades
assigned by Moody's Investors Services, Inc. (Aaa, Aa, A or Baa), Standard &
Poor's Corporation (AAA, AA, A or BBB) or any other nationally recognized rating
service; (3) Other debt instruments, including, but not limited to, issues of or
guaranteed by banks or bank holding companies and other corporations, which
obligations, although not rated by Moody's or Standard & Poor's, are deemed by
the Company's management to have an investment quality comparable to securities
which may be purchased as stated above; and (4) Other evidences of indebtedness
secured by mortgages or deeds of trust representing liens upon real estate.
Notwithstanding the foregoing, the Company may also invest a portion of the
Fixed Account in below investment grade debt instruments. Instruments rated Baa
and/or BBB or lower normally involve a higher risk of default and are less
liquid than higher rated instruments. If the rating of an investment grade debt
security held by the Company is subsequently downgraded to below investment
grade, the decision to retain or dispose of the security will be made based upon
an individual evaluation of the circumstances surrounding the downgrading and
the prospects for continued deterioration, stabilization and/or improvement.
 
    The Company is not obligated to invest amounts allocated to the Fixed
Account according to any particular strategy, except as may be required by
applicable state insurance laws. Investment income from such Fixed Account
assets will be allocated between the Company and all contracts participating in
the Fixed Account, including the Contracts offered by this Prospectus, in
accordance with the terms of such contracts.
 
    Fixed annuity payments made to Annuitants under the Contracts will not be
affected by the mortality experience (death rate) of persons receiving such
payments or of the general population. The Company assumes this "mortality risk"
by virtue of annuity rates incorporated in the Contract which cannot be changed
(except as described under "Modification" with respect to Participant's Accounts
established after the effective date of such modification). In addition, the
Company guarantees that it will not increase charges for maintenance of the
Contracts, regardless of its actual expenses (except as described under
"Modification" with respect to Participant's Accounts established after the
effective date of such modification).
 
    Investment income from the Fixed Account allocated to the Company includes
compensation for mortality and expense risks, distribution expenses and
administrative expenses borne by the Company in connection with contracts
participating in the Fixed Account. The Company expects to derive a profit from
this compensation. The amount of investment income allocated to the Contracts
will vary from Guarantee Period to Guarantee Period in the sole discretion of
the Company. However, the Company guarantees that it will credit interest at a
minimum rate specified in the Contract (not less than 3% per year), compounded
annually, to amounts allocated to the Fixed Account under the Contract. The
Company may credit interest at a rate in excess of the minimum rate; however,
the Company is not obligated to credit any interest in excess of such rate.
There is no specific formula for the determination of excess interest credits.
Such credits, if any, will be determined by the Company based on information as
to expected investment yields. Some of the factors that the Company may consider
in determining whether to credit interest to amounts allocated to the Fixed
Account and the amount thereof, are: general economic trends; rates of return
currently available and anticipated on the Company's investments; regulatory and
tax requirements; and competitive factors. The Company's general investment
strategy will be to invest amounts allocated to the Fixed Account in
investment-grade debt securities and mortgages using immunization strategies
with respect to the applicable Guarantee Periods. This includes, with respect to
investments and average terms of investments, using dedication (cash flow
matching) and/or duration matching to minimize the Company's risk of not
achieving the rates it is crediting under Guarantee Periods in volatile interest
rate environments. ANY INTEREST CREDITED TO AMOUNTS ALLOCATED TO THE FIXED
ACCOUNT IN EXCESS OF THREE PERCENT (3%)
 
                                       16
<PAGE>
PER YEAR WILL BE DETERMINED IN THE SOLE DISCRETION OF THE COMPANY. THE
PARTICIPANT ASSUMES THE RISK THAT INTEREST CREDITED ON AMOUNTS ALLOCATED TO THE
FIXED ACCOUNT MAY NOT EXCEED THE MINIMUM GUARANTEE FOR ANY GIVEN YEAR.
 
    The Company is aware of no statutory limitations on the maximum amount of
interest it may credit, and the Board of Directors has set no limitations.
However, inherent in the Company's exercise of discretion in this regard is the
equitable allocation of distributable earnings and surplus among its various
policyholders and contract owners and to its sole stockholder.
 
THE VARIABLE ACCOUNT
 
    The basic objective of a variable annuity contract is to provide variable
annuity payments which will be to some degree responsive to changes in the
economic environment, including inflationary forces and changes in rates of
return available from various types of investments. The Contract is designed to
seek to accomplish this objective by providing that variable annuity payments
(1) will reflect the investment performance of the Variable Account with respect
to amounts allocated to the Variable Account before the Annuity Commencement
Date and (2) will reflect the investment performance of the Variable Account
after that date. Since the Variable Account is always fully invested in Fund
shares, its investment performance reflects the investment performance of the
Funds. Values of Fund shares held by the Variable Account fluctuate and are
subject to the risks of changing economic conditions as well as the risk
inherent in the ability of each Fund's management to make necessary changes in
its portfolios to anticipate changes in economic conditions. Therefore, the
Participant bears the entire investment risk that the basic objectives of the
Contract may not be realized, and that the adverse effects of inflation may not
be lessened and there can be no assurance that the aggregate amount of variable
annuity payments will equal or exceed the aggregate amount of Purchase Payments
made with respect to a particular Participant's Account for the reasons
described above or because of the premature death of a Payee.
 
    Another important feature of the Contract related to its basic objective is
the Company's promise that the dollar amount of variable annuity payments made
during the lifetime of the Payee(s) will not be adversely affected by the actual
mortality experience of the Company or by the actual expenses incurred by the
Company in excess of expense deductions provided for in the Contract.
 
    Sun Life of Canada (U.S.) Variable Account F (the "Variable Account") was
established by the Company as a separate account on July 13, 1989 pursuant to a
resolution of its Board of Directors. Under Delaware insurance law and the
Contract, the income, gains or losses of the Variable Account are credited to or
charged against the assets of the Variable Account without regard to the other
income, gains, or losses of the Company. These assets are held in relation to
the Contracts described in this Prospectus and such other variable annuity
contracts issued by the Company and designated by it as providing benefits which
vary in accordance with the investment performance of the Variable Account.
Although the assets maintained in the Variable Account will not be charged with
any liabilities arising out of any other business conducted by the Company, all
obligations arising under the Contracts, including the promise to make annuity
payments, are general corporate obligations of the Company.
 
    The Variable Account meets the definition of a separate account under the
federal securities laws and is registered as a unit investment trust under the
Investment Company Act of 1940. Registration with the Securities and Exchange
Commission does not involve supervision of the management or investment
practices or policies of the Variable Account or of the Company by the
Commission.
 
    The assets of the Variable Account are divided into Sub-Accounts. Each
Sub-Account invests exclusively in shares of a specific Fund or series thereof.
All amounts allocated to the Variable Account will be used to purchase Fund
shares as designated by the Participant at their net asset value. Any and all
distributions made by a Fund with respect to the shares held by the Variable
Account will be reinvested to purchase additional shares at their net asset
value. Deductions from the Variable Account for cash withdrawals, annuity
payments, death benefits, Account Fees, contract charges against the assets of
the Variable Account for the assumption of mortality and expense risks,
distribution expenses, administrative
 
                                       17
<PAGE>
expenses and any applicable taxes will, in effect, be made by redeeming the
number of Fund shares at their net asset value equal in total value to the
amount to be deducted. The Variable Account will be fully invested in Fund
shares at all times.
 
THE FUNDS
 
    The Contract offers a number of Fund options, which are briefly discussed
below. Each Fund is a mutual fund registered under the Investment Company Act of
1940, or a separate series of shares of such a mutual fund. More comprehensive
information, including a discussion of potential risks, is found in the current
prospectuses for the Funds (the "Fund Prospectuses"). The Fund Prospectuses
should be read in connection with this Prospectus. A copy of each Fund
Prospectus may be obtained without charge from the Company by calling
1-888-388-8748, or writing to Sun Life Assurance Company of Canada (U.S.),
Retirement Products and Services, P.O. Box 9133, Boston Massachusetts 02117.
 
    The Funds currently available are:
 
AIM VARIABLE INSURANCE FUNDS, INC. (advised by AIM Advisors, Inc.)
 
    AIM V.I. CAPITAL APPRECIATION FUND seeks to provide capital appreciation
through investments in common stocks, with emphasis on medium-sized and smaller
emerging growth companies.
 
    AIM V.I. GROWTH FUND seeks to provide growth of capital through investments
primarily in common stocks of leading U.S. companies considered by AIM to have
strong earnings momentum.
 
    AIM V.I. GROWTH AND INCOME FUND seeks to provide growth of capital, with
current income as a secondary objective by investing primarily in dividend
paying common stocks which have prospects for both growth of capital and
dividend income.
 
    AIM V.I. INTERNATIONAL EQUITY FUND seeks to provide long-term growth of
capital by investing in international equity securities, the issuers of which
are considered by AIM to have strong earnings momentum.
 
THE ALGER AMERICAN FUND (advised by Fred Alger Management, Inc.)
 
    ALGER AMERICAN GROWTH PORTFOLIO seeks long-term capital appreciation by
investing primarily in equity securities of companies with market
capitalizations of $1 billion or more.
 
    ALGER AMERICAN INCOME AND GROWTH PORTFOLIO seeks primarily to provide a high
level of dividend income by investing in dividend paying equity securities.
Capital appreciation is a secondary objective.
 
    ALGER AMERICAN SMALL CAPITALIZATION PORTFOLIO seeks long-term capital
appreciation by investing primarily in equity securities of companies with
market capitalizations within the range of the Russell 2000 Growth Index or the
S&P SmallCap 600 Index.
 
GOLDMAN SACHS VARIABLE INSURANCE TRUST (advised by Goldman Sachs Asset
Management, a separate operating division of Goldman, Sachs & Co., except for
Goldman Sachs International Equity Fund, which is advised by Goldman Sachs Asset
Management International, an affiliate of Goldman, Sachs & Co.)
 
    GOLDMAN SACHS CORE LARGE CAP GROWTH FUND seeks long-term growth of capital
through a broadly diversified portfolio of equity securities of large cap U.S.
issuers that are expected to have better prospects for earnings growth than the
growth rate of the general domestic economy. Dividend income is a secondary
consideration.
 
    GOLDMAN SACHS CORE SMALL CAP EQUITY FUND seeks long-term growth of capital
through a broadly diversified portfolio of equity securities of U.S. issuers
which are included in the Russell 2000 Index at the time of investment.
 
    GOLDMAN SACHS CORE U.S. EQUITY FUND seeks long-term growth of capital and
dividend income through a broadly diversified portfolio of large cap and blue
chip equity securities representing all major sectors of the U.S. economy.
 
                                       18
<PAGE>
    GOLDMAN SACHS GROWTH AND INCOME FUND seeks long-term growth of capital and
growth of income through investments in equity securities that are considered to
have favorable prospects for capital appreciation and/or dividend paying
ability.
 
    GOLDMAN SACHS INTERNATIONAL EQUITY FUND seeks long-term capital appreciation
through investments in equity securities of companies that are organized outside
the U.S. or whose securities are principally traded outside the U.S.
 
J.P. MORGAN SERIES TRUST II (advised by J.P. Morgan Investment Management Inc.)
 
    J.P. MORGAN EQUITY PORTFOLIO seeks to provide a high total return from a
portfolio comprised of selected equity securities.
 
    J.P. MORGAN INTERNATIONAL OPPORTUNITIES PORTFOLIO seeks to provide a high
total return from a portfolio of equity securities of foreign corporations.
 
    J.P. MORGAN SMALL COMPANY PORTFOLIO seeks to provide a high total return
from a portfolio of equity securities of small companies.
 
LORD ABBETT SERIES FUND, INC. (advised by Lord Abbett & Co.)
 
    GROWTH AND INCOME PORTFOLIO seeks to provide long-term growth of capital and
income without excessive fluctuation in market value.
 
MFS/SUN LIFE SERIES TRUST (advised by Massachusetts Financial Services Company,
an affiliate of the Company)
 
    CAPITAL APPRECIATION SERIES seeks capital appreciation by investing in
securities of all types, with major emphasis on common stocks.
 
    EMERGING GROWTH SERIES seeks long-term growth of capital by investing
primarily (I.E., at least 80% of its assets under normal circumstances) in
common stocks of emerging growth companies. Emerging growth companies include
companies that MFS believes are early in their life cycle but which have the
potential to become major enterprises. Dividend and interest income from
portfolio securities, if any, is incidental to its objective of long-term growth
of capital.
 
    GOVERNMENT SECURITIES SERIES seeks current income and preservation of
capital by investing in U.S. Government and Government-related Securities.
 
    HIGH YIELD SERIES seeks high current income and capital appreciation by
investing primarily in fixed income securities of United States and foreign
issuers which may be in the lower rated categories or unrated (commonly known as
"junk bonds") and may include equity features. Securities offering the high
current income sought by the High Yield Series generally involve greater
volatility of price and risk of principal and income, and less liquidity than
securities in the higher rated categories on common stocks.
 
    MONEY MARKET SERIES seeks maximum current income to the extent consistent
with stability of principal by investing exclusively in money market instruments
maturing in less than 13 months. AN INVESTMENT IN THIS SERIES IS NEITHER INSURED
NOR GUARANTEED BY THE U.S. GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE SERIES
WILL BE ABLE TO MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER SHARE.
 
    UTILITIES SERIES seeks capital growth and current income (income above that
available from a portfolio invested entirely in equity securities) by investing
at least 65% of its assets under normal market conditions in equity and debt
securities issued by domestic and foreign utility companies.
 
OCC ACCUMULATION TRUST (advised by OpCap Advisors)
 
    EQUITY PORTFOLIO seeks long-term capital appreciation through investment in
a diversified portfolio of equity securities selected on the basis of a value
oriented approach to investing.
 
    MID CAP PORTFOLIO seeks long-term capital appreciation through investment in
a diversified portfolio of equity securities. The portfolio will invest
primarily in companies with market capitalizations of between $500 million and
$5 billion.
 
                                       19
<PAGE>
    SMALL CAP PORTFOLIO seeks capital appreciation through investment in a
diversified portfolio of equity securities of companies with market
capitalizations of under $1 billion.
 
SALOMON BROTHERS VARIABLE SERIES FUNDS INC (advised by Salomon Brothers Asset
Management Inc. ("SBAM"); with respect to the Strategic Bond Fund, SBAM has a
consulting agreement with its affiliate, Salomon Brothers Asset Management
Limited, regarding currency transactions and investments in non-dollar
denominated debt securities.)
 
    SALOMON BROTHERS VARIABLE CAPITAL FUND seeks capital appreciation through
investments primarily in common stock or securities convertible into common
stocks that are believed to have above average price appreciation potential and
may involve above average risk.
 
    SALOMON BROTHERS VARIABLE INVESTORS FUND seeks long-term growth of capital
and, secondarily, current income, primarily through investments in common stocks
of well-known companies.
 
    SALOMON BROTHERS VARIABLE STRATEGIC BOND FUND seeks a high level of current
income and, secondarily, capital appreciation, through investments in a globally
diverse portfolio of fixed-income investments. The fund reserves the right to
invest predominantly in medium or lower rated securities, commonly known as
"junk bonds."
 
    SALOMON BROTHERS VARIABLE TOTAL RETURN FUND seeks above average income
(compared to a portfolio entirely invested in equity securities) and,
secondarily, growth of capital and income, through investments in a broad
variety of equity and fixed income securities and short-term obligations.
 
WARBURG PINCUS TRUST (advised by Warburg Pincus Asset Management, Inc.; with
respect to the Post-Venture Capital Portfolio, Warburg Pincus Asset Management,
Inc. has retained Abbott Capital Management, L.P., regarding the Fund's
investments in United States or foreign private limited partnerships or other
investment funds.)
 
    EMERGING MARKETS PORTFOLIO seeks long-term growth of capital by investing
primarily in equity securities of non-United States issuers consisting of
companies in emerging securities markets.
 
    INTERNATIONAL EQUITY PORTFOLIO seeks long-term capital appreciation by
investing in equity securities of non-U.S. issuers.
 
    POST-VENTURE CAPITAL PORTFOLIO seeks long-term growth of capital by
investing primarily in equity securities of issuers in their post-venture
capital stage of development and pursues an aggressive investment strategy.
 
    SMALL COMPANY GROWTH PORTFOLIO seeks capital growth by investing in equity
securities of small-sized domestic companies.
 
    The Funds may also be available to registered separate accounts offering
variable annuity and variable life products of other affiliated and unaffiliated
insurance companies, as well as to the Variable Account and other separate
accounts of the Company. Although the Company does not anticipate any
disadvantages to this, there is a possibility that a material conflict may arise
between the interests of the Variable Account and one or more of the other
separate accounts participating in the Funds. A conflict may occur due to a
change in law affecting the operations of variable life and variable annuity
separate accounts, differences in the voting instructions of the Participants
and Payees and those of other companies, or some other reason. In the event of
conflict, the Company will take any steps necessary to protect Participants and
Payees, including withdrawal of the Variable Account from participation in the
underlying Funds which are involved in the conflict or substitution of shares of
other Funds.
 
        PURCHASE PAYMENTS AND CONTRACT VALUES DURING ACCUMULATION PERIOD
 
PURCHASE PAYMENTS
 
(1) PLACE, AMOUNT AND FREQUENCY
 
    All Purchase Payments are to be paid to the Company at its Annuity Service
Mailing Address. The amount of Purchase Payments may vary; however, the Company
will not accept an initial Purchase Payment to be allocated to a Participant's
Account which is less than $5,000, and each additional Purchase Payment must be
at least $1,000, unless waived by the Company. In addition, the prior approval
of the Company is
 
                                       20
<PAGE>
required before it will accept a Purchase Payment which would cause the value of
a Participant's Account to exceed $1,000,000. If the value of a Participant's
Account exceeds $1,000,000, no additional Purchase Payments will be allocated
without the prior approval of the Company.
 
    A completed Application (and in the case of a Group Contract, a completed
Contract Application, if required) and the initial Purchase Payment are
forwarded to the Company for acceptance. Upon acceptance, in the case of an
Individual Contract the Contract is issued to the Participant, and in the case
of a Group Contract the Contract and Certificate(s), as applicable, are issued
to the Owner and/or Participant(s), respectively, and the initial Purchase
Payment is then credited to the Participant's Account. The initial Purchase
Payment must be applied within two business days of receipt by the Company of a
completed Application. The Company may retain the Purchase Payment for up to
five business days while attempting to complete an incomplete Application. If
the Application cannot be made complete within five business days, the
prospective participant will be informed of the reasons for the delay and the
Purchase Payment will be returned immediately unless the prospective participant
specifically consents to the Company's retaining the Purchase Payment until the
Application is made complete. Thereafter, the Purchase Payment must be applied
within two business days. Subsequent Purchase Payments are applied at the end of
the Valuation Period during which they are received by the Company.
 
(2) ACCOUNT CONTINUATION
 
    A Participant's Account shall be continued automatically in full force
during the lifetime of the Annuitant until the Annuity Commencement Date or
until the Participant's Account is surrendered. Purchase Payments may be made at
any time while the Participant's Account is in force.
 
(3) ALLOCATION OF NET PURCHASE PAYMENTS
 
    The Net Purchase Payment is that portion of a Purchase Payment which remains
after deduction of any applicable premium or similar tax. Each Net Purchase
Payment will be allocated either to Guarantee Periods available in connection
with the Fixed Account or to Sub-Accounts of the Variable Account or to both
Sub-Accounts and the Fixed Account in accordance with the allocation factors
specified in the particular Participant's Application, or as subsequently
changed.
 
    The allocation factors for new Payments between the Guarantee Periods and
among the Sub-Accounts may be changed by the Participant at any time by giving
written notice of the change to the Company. Any change will take effect with
the first Purchase Payment received with or after receipt of notice of the
change by the Company and will continue in effect until subsequently changed.
 
PARTICIPANT'S ACCOUNT
 
    The Company will establish a Participant's Account for each Participant
under a Contract and will maintain the Participant's Account during the
Accumulation Period. The Participant's Account Value for any Valuation Period is
equal to the sum of the variable accumulation value, if any, plus the fixed
accumulation value, if any, of the Participant's Account for that Valuation
Period.
 
VARIABLE ACCUMULATION VALUE
 
    The variable accumulation value of a Participant's Account, if any, for any
Valuation Period is equal to the sum of the value of all Variable Accumulation
Units credited to the Participant's Account for such Valuation Period.
 
(1) CREDITING VARIABLE ACCUMULATION UNITS
 
    Upon receipt of a Purchase Payment by the Company, all or that portion, if
any, of the Net Purchase Payment to be allocated to any Sub-Accounts in
accordance with the allocation factors will be credited to the Participant's
Account in the form of Variable Accumulation Units. The number of particular
Variable Accumulation Units to be credited is determined by dividing the dollar
amount allocated to the particular Sub-Account by the Variable Accumulation Unit
value for the particular Sub-Account for the Valuation Period during which the
Purchase Payment is applied by the Company to the Participant's Account.
 
(2) VARIABLE ACCUMULATION UNIT VALUE
 
    The Variable Accumulation Unit value for each Sub-Account was established at
$10.00 for the first Valuation Period of the particular Sub-Account. The
Variable Accumulation Unit value for the particular Sub-Account for any
subsequent Valuation Period is determined by methodology which is the
mathematical
 
                                       21
<PAGE>
equivalent of multiplying the Variable Accumulation Unit value for the
particular Sub-Account for the immediately preceding Valuation Period by the Net
Investment Factor for the particular Sub-Account for such subsequent Valuation
Period. The Variable Accumulation Unit value for each Sub-Account for any
Valuation Period is the value determined as of the end of the particular
Valuation Period and may increase, decrease or remain the same from Valuation
Period to Valuation Period in accordance with the Net Investment Factor
described below. For a hypothetical example of the calculation of the value of a
Variable Accumulation Unit, see Appendix A.
 
(3) NET INVESTMENT FACTOR
 
    The Net Investment Factor is an index applied to measure the investment
performance of a Sub-Account from one Valuation Period to the next. The Net
Investment Factor may be greater or less than or equal to one; therefore the
value of a Variable Accumulation Unit may increase, decrease or remain the same.
 
    The Net Investment Factor for any Sub-Account for any Valuation Period is
determined by dividing (a) by (b) and then subtracting (c) from the result
where:
 
        (a) is the net result of:
 
           (1) the net asset value of a Fund share held in the Sub-Account
       determined as of the end of the Valuation Period, plus
 
           (2) the per share amount of any dividend or other distribution
       declared by the Fund on the shares held in the Sub-Account if the
       "ex-dividend" date occurs during the Valuation Period, plus or minus
 
           (3) a per share credit or charge with respect to any taxes paid or
       reserved for by the Company during the Valuation Period which are
       determined by the Company to be attributable to the operation of the
       Sub-Account (no federal income taxes are applicable under present law);
 
        (b) is the net asset value of a Fund share held in the Sub-Account
    determined as of the end of the preceding Valuation Period; and
 
        (c) is the asset charge factor determined by the Company for the
    Valuation Period to reflect the charges for assuming the mortality and
    expense risks and administrative expense risk.
 
FIXED ACCUMULATION VALUE
 
    The fixed accumulation value of a Participant's Account, if any, for any
Valuation Period is equal to the sum of the values of all Guarantee Amounts
credited to the Participant's Account for such Valuation Period.
 
GUARANTEE PERIODS
 
    The Participant may elect one or more Guarantee Period(s) with durations of
from one to ten years from among those made available by the Company. The
period(s) elected will determine the Guaranteed Interest Rate(s). A Purchase
Payment, or the portion thereof (at least $1,000) (or the amount transferred in
accordance with the Transfer Privilege) allocated to a particular Guarantee
Period, less any applicable premium or similar taxes and any amounts
subsequently withdrawn, will earn interest at the Guaranteed Interest Rate
during the Guarantee Period. Initial Guarantee Periods begin on the date the
Purchase Payment is applied, or, in the case of a transfer, on the effective
date of the transfer, and end the number of calendar years in the Guarantee
Period elected from the end of the calendar month in which the amount was
allocated to the Guarantee Period (the "Expiration Date"). Subsequent Guarantee
Periods begin on the first day following the Expiration Date.
 
    Any portion of a Participant's Account Value allocated to a particular
Guarantee Period with a particular Expiration Date (including interest earned
thereon) will be referred to herein as a "Guarantee Amount". Interest will be
credited daily at a rate equivalent to the compound annual rate. As a result of
additional Purchase Payments, renewals and transfers of portions of the
Participant's Account Value described under "Transfer Privilege" below, which
will begin new Guarantee Periods, Guarantee Amounts allocated to Guarantee
Periods of the same duration may have different Expiration Dates. Thus each
Guarantee Amount will be treated separately for purposes of determining any
Market Value Adjustment (See "Market Value Adjustment").
 
    The Company will notify the Participant in writing at least 45 and no more
than 75 days prior to the Expiration Date for any Guarantee Amount. A new
Guarantee Period of the same duration as the previous
 
                                       22
<PAGE>
Guarantee Period will commence automatically at the end of the previous
Guarantee Period unless the Company receives, prior to the end of such Guarantee
Period, a written election by the Participant of a different Guarantee Period
from among those being offered by the Company at such time, or instructions to
transfer all or a portion of the Guarantee Amount to one or more Sub-Accounts in
accordance with the Transfer Privilege Provision. Each new Guarantee Amount must
be at least $1,000.
 
GUARANTEED INTEREST RATES
 
    The Company periodically will establish an applicable Guaranteed Interest
Rate for each Guarantee Period offered by the Company. Current Guaranteed
Interest Rates may be changed by the Company frequently or infrequently
depending on interest rates available to the Company and other factors as
described below, but once established rates will be guaranteed for the duration
of the respective Guarantee Periods. However, Participant's Account Value
withdrawn from the Fixed Account will be subject to any applicable withdrawal
charge and Account Fee and may be subject to a Market Value Adjustment on
withdrawal or surrender (See "Market Value Adjustment").
 
    The Guaranteed Interest Rate will not be less than three percent (3%) per
year, compounded annually. The Company has no specific formula for determining
the rate of interest that it will declare as a Guaranteed Interest Rate, as
these rates will be reflective of interest rates available on the types of debt
instruments in which the Company intends to invest amounts allocated to the
Fixed Account (See "The Fixed Account"). In addition, the Company's management
may consider other factors in determining Guaranteed Interest Rates for a
particular duration including: regulatory and tax requirements; sales
commissions and administrative and distribution expenses borne by the Company;
general economic trends; and competitive factors. The Participant bears the risk
that the Guaranteed Interest Rate to be credited on amounts allocated to the
Fixed Account may not exceed three percent (3%) per year for any Guarantee
Period.
 
DOLLAR COST AVERAGING
 
    The Participant may select, at no extra charge, a dollar-cost averaging
program by allocating a minimum of $5,000 to a designated Sub-Account or to the
Fixed Account. Amounts allocated to the Fixed Account under the program will
earn interest at a specified rate declared by the Company. Each month or quarter
a level amount will be transferred automatically, at no cost, to one or more
Sub-Accounts chosen by the Participant, up to a maximum of four. The program
continues until the Participant's Account Value allocated to the program is
depleted or the Participant elects to stop the program. The final amount
transferred from the Fixed Account will include all interest earned.
 
    No Market Value Adjustment, either positive or negative, will apply to
amounts automatically transferred from the Fixed Account under the program,
except that if the program is discontinued or altered prior to completion,
amounts remaining in the Fixed Account will be liquidated and the Market Value
Adjustment will be applied. Any additions to the program will be treated as
commencing a new program.
 
    The main objective of a dollar cost averaging program is to minimize the
impact of short-term price fluctuations. Since the same dollar amount is
transferred to other available investment options at set intervals, dollar cost
averaging allows a Participant to purchase more Accumulation Units (and,
indirectly, more Fund shares) when prices are low and fewer Accumulation Units
(and, indirectly, fewer Fund shares) when prices are high. Therefore, a lower
average cost per Accumulation Unit may be achieved over the long-term. A dollar
cost averaging program allows Participants to take advantage of market
fluctuations. However, it is important to understand that a dollar cost
averaging program does not assure a profit or protect against loss in a
declining market.
 
ASSET ALLOCATION
 
    One or more asset allocation investment programs may be made available in
connection with the Contracts, at no extra charge. An asset allocation program
is offered and provides for the allocation of the Participant's Account Value
among the available investment options. These programs will be fully described
in a separate brochure. Participants may elect to enter into an asset allocation
investment program, under the terms and conditions described in the brochure.
 
TRANSFER PRIVILEGE; TELEPHONE TRANSFERS; RESTRICTION ON MARKET TIMERS
 
    At any time during the Accumulation Period the Participant may, upon request
received by the Company, transfer all or part of the Participant's Account Value
to one or more Sub-Accounts or Guarantee Periods available under the Contract,
subject to the following conditions: (1) not more than 12 transfers may
 
                                       23
<PAGE>
be made in any Account Year and a minimum of 30 days must elapse between
transfers made to or from the Fixed Account or among Guarantee Periods; (2) the
amount being transferred from a Sub-Account may not be less than $1,000, unless
the total Participant's Account Value attributable to a Sub-Account is being
transferred; (3) any Participant's Account Value remaining in a Sub-Account may
not be less than $1,000; and (4) the total Participant's Account Value
attributable to the Guarantee Amount must be transferred; however, the transfer
of interest credited to such Guarantee Amount during the current Account Year
and automatic transfers to a Sub-Account of amounts allocated to a Guarantee
Period with a one-year duration in connection with an approved dollar cost
averaging program are not subject to this restriction. In addition, transfers of
a Guarantee Amount (except the automatic transfers described under (4) above)
will be subject to the Market Value Adjustment described below unless the
transfer is effective within 30 days prior to the Expiration Date applicable to
the Guarantee Amount; and transfers involving Variable Accumulation Units shall
be subject to such terms and conditions as may be imposed by the Funds.
Currently, there is no charge for transfers; however, the Company reserves the
right to impose a charge of up to $15 for each transfer. A transfer generally
will be effective on the date the request for transfer is received by the
Company. Under current law, there will not be any tax liability to the
Participant if a Participant makes a transfer.
 
    Transfers may be requested either in writing or by telephone. This telephone
exchange privilege is made available to Participants automatically without the
Participant's election. The Company will employ reasonable procedures to confirm
that instructions communicated by telephone are genuine. Such procedures may
include one or more of the following: requesting identifying information, such
as name, Contract number, Social Security Number, and/or personal identification
number; tape recording all telephone transactions; or providing written
confirmation thereof to both the Participant and any agent of record, at the
last address of record; or such other procedures as the Company may deem
reasonable. Although the Company's failure to follow reasonable procedures may
result in the Company's liability for any losses due to unauthorized or
fraudulent telephone transfers, the Company will not be liable for following
instructions communicated by telephone which it reasonably believes to be
genuine. Any losses incurred pursuant to actions taken by the Company in
reliance on telephone instructions reasonably believed to be genuine shall be
borne by the Participant.
 
    The Contracts are not designed for professional market timing organizations
or other entities using programmed and frequent transfers. Persons who wish to
employ such strategies should not purchase a Contract. Accordingly, transfers
may be subject to restriction if exercised by a market timing firm or any other
third party authorized to initiate transfer transactions on behalf of multiple
Participants. In imposing such restrictions, the Company may, among other
things, not accept (1) the transfer instructions of any agent acting under a
power of attorney on behalf of more than one Participant, or (2) the transfer
instructions of individual Participants who have executed preauthorized transfer
forms that are submitted by market timing firms or other third parties on behalf
of more than one Participant at the same time. The Company will not impose any
such restrictions or otherwise modify transfer rights unless such action is
reasonably intended to prevent the use of such rights in a manner that will
disadvantage or potentially impair the contract rights of other Participants.
 
    In addition, certain of the Funds have reserved the right to temporarily or
permanently refuse exchange requests from the Variable Account if, in the
judgment of such Fund's investment adviser, the Fund would be unable to invest
effectively in accordance with its investment objective and policies, or would
otherwise potentially be adversely affected. In particular, a pattern of
exchanges that coincide with a "market timing" strategy may be disruptive to a
Fund and therefore may be refused. Accordingly, the Variable Account may not be
in a position to effectuate transfers and may refuse transfer requests without
prior notice. The Company also reserves the right, for similar reasons, to
refuse or delay exchange requests involving transfers to or from the Fixed
Account.
 
WAIVERS; REDUCED CHARGES; CREDITS; BONUS GUARANTEED INTEREST RATES
 
    The Company may reduce or waive the withdrawal charge or Account Fee, credit
additional amounts, or grant bonus Guaranteed Interest Rates in situations where
selling and/or maintenance costs associated with the Contracts are reduced, such
as the sale of several Contracts to the same Participant, sales of large
Contracts, and certain group sales. In addition, the Company may waive the
Account Fee, credit additional amounts, or grant bonus Guaranteed Interest Rates
in connection with Contracts sold to officers, directors and employees of the
Company or its affiliates, registered representatives and employees of
broker-dealers with a current selling agreement with the Company and their
affiliates, employees of affiliated asset
 
                                       24
<PAGE>
management firms, and persons who have retired from such positions ("Eligible
Employees") and immediate family members of Eligible Employees. The Company may
reduce or waive such charges and fees, credit additional amounts, or grant bonus
Guaranteed Interest Rates on any Contract where, for example, expenses
associated with the sale of the Contract and/or costs or services associated
with administering and maintaining the Contract are reduced. Eligible Employees
and their immediate family members may also purchase a Contract without regard
to minimum Purchase Payment requirements. For other situations in which
withdrawal charges may be waived, see "Withdrawal Charges."
 
        CASH WITHDRAWALS, WITHDRAWAL CHARGES AND MARKET VALUE ADJUSTMENT
 
CASH WITHDRAWALS
 
    At any time before the Annuity Commencement Date and during the lifetime of
the Annuitant, the Participant may elect to receive a cash withdrawal payment
from the Company. Any such election shall specify the amount of the withdrawal
and will be effective on the date that it is received by the Company.
 
    The Participant may request a full surrender or partial withdrawal. A full
surrender will result in a cash withdrawal payment equal to the value of the
Participant's Account at the end of the Valuation Period during which the
election becomes effective less the Account Fee, plus or minus any applicable
Market Value Adjustment, and less any applicable withdrawal charge. A request
for a partial withdrawal will result in the cancellation of a portion of the
Participant's Account Value equal to the dollar amount of the cash withdrawal
payment, plus or minus any applicable Market Value Adjustment and plus any
applicable withdrawal charge. If a partial withdrawal is requested which would
leave a Participant's Account Value of less than the Account Fee, then such
partial withdrawal will be treated as a full surrender. The Account Fee and any
applicable Market Value Adjustment will be deducted from the Participant's
Account before the application of any withdrawal charge.
 
    In the case of a partial withdrawal, the Participant may instruct the
Company as to the amounts to be withdrawn from each Sub-Account and/or Guarantee
Amount. If not so instructed, the Company will effect such withdrawal pro-rata
from each Sub-Account and Guarantee Amount in which the Participant's Account
Value is invested at the end of the Valuation Period during which the withdrawal
becomes effective. ALL CASH WITHDRAWALS OF ANY GUARANTEE AMOUNT, EXCEPT THOSE
EFFECTIVE WITHIN 30 DAYS PRIOR TO THE EXPIRATION DATE OF SUCH GUARANTEE AMOUNT
OR THE WITHDRAWAL OF INTEREST CREDITED DURING THE CURRENT ACCOUNT YEAR, WILL BE
SUBJECT TO THE MARKET VALUE ADJUSTMENT.
 
    Cash withdrawals from a Sub-Account will result in the cancellation of
Variable Accumulation Units attributable to the Participant's Account with an
aggregate value on the effective date of the withdrawal equal to the total
amount by which the Sub-Account is reduced. The cancellation of such units will
be based on the Variable Accumulation Unit values of the Sub-Account at the end
of the Valuation Period during which the cash withdrawal is effective.
 
    The Company, upon request, will advise the Participant of the amounts that
would be payable in the event of a full surrender or partial withdrawal.
 
    Any cash withdrawal payment will be paid within seven days from the date the
election becomes effective, except as the Company may be permitted to defer such
payment in accordance with the Investment Company Act of 1940 and applicable
state insurance law. Deferral of amounts withdrawn from the Variable Account is
currently permissible only (1) for any period (a) during which the New York
Stock Exchange is closed other than customary week-end and holiday closings or
(b) during which trading on the New York Stock Exchange is restricted as
determined by the Securities and Exchange Commission, (2) for any period during
which an emergency exists as a result of which (a) disposal of securities held
by any Fund is not reasonably practicable or (b) it is not reasonably
practicable to determine the value of the net assets of a Fund or (3) for such
other periods as the Securities and Exchange Commission may by order permit for
the protection of security holders. The Company reserves the right to defer the
payment of amounts withdrawn from the Fixed Account for a period not to exceed
six months from the date written request for such withdrawal is received by the
Company. The Company is not required to pay interest on amounts so deferred.
 
    Since the Qualified Contracts offered by this Prospectus will be issued in
connection with retirement plans which meet the requirements of Sections 401,
403, and 408 of the Internal Revenue Code, reference
 
                                       25
<PAGE>
should be made to the terms of the particular retirement plan for any
limitations or restrictions on cash withdrawals. For special restrictions
applicable to withdrawals from Contracts used with Tax-Sheltered Annuities
established pursuant to Section 403(b) of the Internal Revenue Code, see
"Section 403(b) Annuities" below.
 
    A cash withdrawal under either a Qualified or Non-Qualified Contract offered
by this Prospectus also may result in a tax penalty. The tax consequences of a
cash withdrawal payment under both Qualified and Non-Qualified Contracts should
be carefully considered (See "Federal Tax Status").
 
WITHDRAWAL CHARGES
 
    No sales charges are deducted from Purchase Payments. However, a withdrawal
charge (contingent deferred sales charge), when applicable, will be assessed to
reimburse the Company for certain expenses relating to the distribution of the
Contracts, including commissions, costs of preparation of sales literature and
other promotional costs and acquisition expenses. Cash withdrawals may result in
a 10% tax penalty in addition to any withdrawal charge applicable under the
Contracts (See "Federal Tax Status").
 
    A portion of the Participant's Account Value may be withdrawn each year
without imposition of any withdrawal charge, and after a Purchase Payment has
been held by the Company for seven years it may be withdrawn free of any
withdrawal charge. In addition, no withdrawal charge is assessed upon
annuitization, upon payment of the death benefit or upon the transfer of
Participant's Account Value among the Sub-Accounts or between the Sub-Accounts
and the Fixed Account or within the Fixed Account.
 
    The withdrawal charge is not assessed with respect to a Participant's
Account established for the personal account of an employee of the Company or of
any of its affiliates, or of a licensed insurance agent engaged in distributing
the Contracts, and the Company may waive the withdrawal charge with respect to
Purchase Payments derived from the surrender of other annuity contracts and/or
certificates issued by the Company. In addition, if approval has been received
from state regulatory authorities having jurisdiction over the applicable
Contract, the Company will waive the withdrawal charge arising from a full
surrender if: 1) at least one year has elapsed since the Participant's Date of
Coverage; and 2) the Participant is confined to an eligible nursing home (a
licensed hospital or licensed skilled or intermediate care nursing facility at
which treatment is available on a daily basis and daily medical records are kept
for each patient) and has been confined there for the preceding 180 days, or for
such shorter period as may be provided for, depending upon the jurisdiction in
which the Contract was issued. Such withdrawal may be subject to the 10% tax
penalty described above.
 
    All other full or partial withdrawals are subject to a withdrawal charge
which will be applied in accordance with the applicable methodology described
below:
 
    The Contracts provide for the accumulation of the 10% annual free withdrawal
amount into future years. The applicable withdrawal charge will be determined on
the following basis:
 
    (1) Old Payments and new Payments: With respect to a particular Account
Year, "new Payments" are those Payments made in that Account Year or in the six
immediately preceding Account Years, and "old Payments" are those Payments not
defined as new Payments.
 
    (2) Order of liquidation: To effect a full surrender or partial withdrawal,
each withdrawal is allocated first to the free withdrawal amount and then to
previously unliquidated Payments (on a first-in, first-out basis) until all
Purchase Payments have been liquidated.
 
    (3) Free withdrawal amount: The free withdrawal amount is equal to 10% of
any new Payments, irrespective of whether these new Payments have been
liquidated. Any portion of the free withdrawal amount that is not used in the
current Account Year is cumulative into future years.
 
    (4) Maximum withdrawal amount without a withdrawal charge: The maximum
amount that can be withdrawn without a withdrawal charge in an Account Year is
equal to the sum of (a) any previously unliquidated free withdrawal amount, and
(b) any previously unliquidated old Payments.
 
    (5) Amount subject to withdrawal charge: The amount subject to the
withdrawal charge is the amount of the partial withdrawal or full surrender less
the maximum withdrawal amount without a withdrawal charge, up to a maximum of
the sum of all unliquidated new Payments.
 
AMOUNT OF WITHDRAWAL CHARGE
 
    The withdrawal charge percentage varies according to the number of complete
Account Years between the Account Year in which a Purchase Payment was credited
to a Participant's Account and the Account Year
 
                                       26
<PAGE>
in which it was withdrawn. The amount of the withdrawal charge is determined by
multiplying the amount subject to the withdrawal charge by the withdrawal charge
percentage, in accordance with the following table:
 
<TABLE>
<CAPTION>
                    NUMBER OF COMPLETE
                      ACCOUNT YEARS     WITHDRAWAL CHARGE
                    ------------------  -----------------
                    <S>                 <C>
                    0-1                         6%
                    2-3                         5%
                    4-5                         4%
                    6                           3%
                    7 or more                   0%
</TABLE>
 
    In no event shall the aggregate withdrawal charges assessed against a
Participant's Account exceed 6% of the aggregate Purchase Payments made under a
Contract (See Appendix C for examples of withdrawals, withdrawal charges and the
Market Value Adjustment). The Company may, upon notice to the Owner of a Group
Contract, modify the withdrawal charges, provided that such modification shall
apply only to Participant's Accounts established after the effective date of
such modification (See "Modification").
 
SECTION 403(b) ANNUITIES
 
    The Internal Revenue Code imposes restrictions on cash withdrawals from
Contracts used with Section 403(b) Annuities. In order for these Contracts to
receive tax deferred treatment, the Contract must provide that cash withdrawals
of amounts attributable to salary reduction contributions (other than
withdrawals of accumulation account value as of December 31, 1988 ("Pre-1989
Account Value")) may be made only when the Participant attains age 59 1/2,
separates from service with the employer, dies or becomes disabled (within the
meaning of Section 72(m)(7) of the Code). These restrictions apply to any growth
or interest on or after January 1, 1989 on Pre-1989 Account Value, salary
reduction contributions made on or after January 1, 1989, and any growth or
interest on such contributions ("Restricted Account Value").
 
    Withdrawals of Restricted Account Value are also permitted in cases of
financial hardship, but only to the extent of contributions; earnings on
contributions cannot be withdrawn for hardship reasons. While specific rules
defining hardship have not been issued by the Internal Revenue Service, it is
expected that to qualify for a hardship distribution, the Participant must have
an immediate and heavy bona fide financial need and lack other resources
reasonably available to satisfy the need. Hardship withdrawals (as well as
certain other premature withdrawals) will be subject to a 10% tax penalty, in
addition to any withdrawal charge applicable under the Contract (See "Federal
Tax Status").
 
    Under the terms of a particular Section 403(b) plan, the Participant may be
entitled to transfer all or a portion of the Participant's Account Value to one
or more alternative funding options. Participants should consult the documents
governing their plan and the person who administers the plan for information as
to such investment alternatives.
 
    For information on the federal income tax withholding rules that apply to
distributions from Qualified Contracts (including Section 403(b) Annuities) see
"Federal Tax Status".
 
MARKET VALUE ADJUSTMENT
 
    Any cash withdrawal of a Guarantee Amount, other than a withdrawal effective
within 30 days prior to the Expiration Date of the Guarantee Amount or the
withdrawal of interest credited on such Guarantee Amount during the current
Account Year, will be subject to a Market Value Adjustment ("MVA") (for this
purpose, transfers (except automatic transfers to a Sub-Account of amounts
allocated to a Guarantee Period with a one-year duration in connection with an
approved dollar cost averaging program), distributions on the death of a
Participant and amounts applied to purchase an annuity are treated as cash
withdrawals). The MVA will be applied to the amount being withdrawn which is
subject to the MVA, after deduction of any applicable Account Fee and before
deduction of any applicable withdrawal charge.
 
    The MVA will reflect the relationship between the Current Rate (as defined
below) for the Guarantee Amount being withdrawn and the Guaranteed Interest Rate
applicable to the amount being withdrawn. It also reflects the time remaining in
the applicable Guarantee Period. Generally, if the Guaranteed Interest
 
                                       27
<PAGE>
Rate is lower than the applicable Current Rate, then the application of the MVA
will result in a lower payment upon withdrawal. Similarly, if the Guaranteed
Interest Rate is higher than the applicable Current Rate, the application of the
MVA will result in a higher payment upon withdrawal.
 
    The Market Value Adjustment is determined by the application of the
following formula:
 
<TABLE>
 <S>                        <C>
                              N/12
                      1 + I
                    ( ----- )      -1
                      1 + J
</TABLE>
 
where,
 
    I is the Guaranteed Interest Rate being credited to the Guarantee Amount
subject to the Market Value Adjustment,
 
    J is the Guaranteed Interest Rate declared by the Company, as of the
effective date of the application of the Market Value Adjustment, for current
allocations to Guarantee Periods equal to the balance of the Guarantee Period of
the Guarantee Amount subject to the Market Value Adjustment, rounded to the next
higher number of complete years (the "Current Rate"), and
 
    N is the number of complete months remaining in the Guarantee Period of the
Guarantee Amount subject to the Market Value Adjustment.
 
    In the determination of J, if the Company currently does not offer the
applicable Guarantee Period, then the rate will be determined by linear
interpolation of the current rates for Guarantee Periods that are available.
 
    See Appendix C for examples of the application of the Market Value
Adjustment.
 
                                 DEATH BENEFIT
 
DEATH BENEFIT PROVIDED BY THE CONTRACT
 
    In the event of the death of the Annuitant prior to the Annuity Commencement
Date, the Company will pay a death benefit to the Beneficiary. If there is no
designated Beneficiary living on the date of death of the Annuitant, the Company
will, upon receipt of Due Proof of Death of both the Annuitant and the
designated Beneficiary, pay the death benefit in one sum to the Participant or,
if the Annuitant was the Participant, to the estate of the
Participant/Annuitant. If the death of the Annuitant occurs on or after the
Annuity Commencement Date, no death benefit will be payable under the Contract
except as may be provided under the Annuity Option elected.
 
ELECTION AND EFFECTIVE DATE OF ELECTION
 
    During the lifetime of the Annuitant and prior to the Annuity Commencement
Date, the Participant may elect to have the death benefit applied under one or
more Annuity Options to effect a Variable Annuity or a Fixed Annuity or a
combination of both for the Beneficiary as Payee after the death of the
Annuitant. If no election of a method of settlement of the death benefit by the
Participant is in effect on the date of death of the Annuitant, the Beneficiary
may elect (a) to receive the death benefit in the form of a single cash payment;
or (b) to have the death benefit applied under one or more of the Annuity
Options (on the Annuity Commencement Date described under "Payment of Death
Benefit") to effect a Variable Annuity or a Fixed Annuity or a combination of
both for the Beneficiary as Payee. Either election described above may be made
by filing with the Company a written election in such form as the Company may
require. Any election of a method of settlement of the death benefit by the
Participant will become effective on the date it is received by the Company. For
the purposes of the Payment of Death Benefit and Amount of Death Benefit
sections below, any election of the method of settement of the death benefit by
the Participant which is in effect on the date of death of the Annuitant will be
deemed effective on the date Due Proof of Death of the Annuitant is received by
the Company. Any election of a method of settlement of the death benefit by the
Beneficiary will become effective on the later of: (a) the date the election is
received by the Company; or (b) the date Due Proof of Death of the Annuitant is
received by the Company. If an election by the Beneficiary is not received
 
                                       28
<PAGE>
by the Company within 60 days following the date Due Proof of Death of the
Annuitant is received by the Company, the Beneficiary will be deemed to have
elected a cash payment as of the last day of the 60 day period.
 
    In all cases, no Participant or Beneficiary shall be entitled to exercise
any rights that would adversely affect the treatment of the Contract as an
annuity contract under the Internal Revenue Code. (See "Other Contractual
Provisions -- Death of Participant").
 
PAYMENT OF DEATH BENEFIT
 
    If the death benefit is to be paid in cash to the Beneficiary, payment will
be made within seven days of the date the election becomes effective or is
deemed to become effective, except as the Company may be permitted to defer any
such payment of amounts derived from the Variable Account in accordance with the
Investment Company Act of 1940. If the death benefit is to be paid in one sum to
the Participant or, if the Annuitant was the Participant, to the estate of the
deceased Participant/Annuitant, payment will be made within seven days of the
date Due Proof of Death of the Annuitant, the Participant and/or the designated
Beneficiary, as applicable, is received by the Company. If settlement under one
or more of the Annuity Options is elected the Annuity Commencement Date will be
the first day of the second calendar month following the effective date or the
deemed effective date of the election, and the Participant's Account will be
maintained in effect until the Annuity Commencement Date.
 
AMOUNT OF DEATH BENEFIT
 
    The death benefit is determined as of the effective date or deemed effective
date of the death benefit election.
 
    If the Annuitant was age 85 or less on the Date of Coverage, the death
benefit is equal to the greatest of (1) the Participant's Account Value for the
Valuation Period during which the death benefit election is effective or is
deemed to become effective; (2) the amount that would have been payable in the
event of a full surrender of the Participant's Account on the date the death
benefit election is effective or is deemed to become effective; (3) the
Participant's Account Value on the Seven Year Anniversary immediately preceding
the date the death benefit election is effective or is deemed to become
effective, adjusted for any subsequent Purchase Payments and partial withdrawals
and charges made between such Seven Year Anniversary and the date the election
is effective or is deemed to become effective; and (4) the total Purchase
Payments made with respect to the Participant's Account, minus the sum of all
partial withdrawals. For the purposes of determining the amount payable under
(4), each Purchase Payment and each partial withdrawal will accumulate daily at
a rate equivalent to 5% per year until the first day of the month following the
Annuitant's 80th birthday. No such accumulation will apply to a Purchase Payment
or partial withdrawal once that Purchase Payment or partial withdrawal has, as a
result of such accumulation, grown to double its original amount.
 
    If the Annuitant was age 86 or greater on the Date of Coverage, the death
benefit is equal to (2) above.
 
    If (2), (3) or (4) is operative the Participant's Account Value will be
increased by the excess of (2), (3) or (4), as applicable, over (1) and the
increase will be allocated to the Sub-Accounts based on the respective values of
the Sub-Accounts on the date the amount of the death benefit is determined. If
no portion of the Participant's Account is allocated to the Sub-Accounts, the
entire increase will be allocated to the Sub-Account invested in the Money
Market Series of MFS/Sun Life Series Trust.
 
                     HOW THE CONTRACT CHARGES ARE ASSESSED
 
    As more fully described below, charges under the Contract offered by this
Prospectus are assessed in three ways: (1) as deductions for the Account Fee
and, if applicable, for premium taxes; (2) as charges against the assets of the
Variable Account for the assumption of mortality and expense risks and
administrative expenses; and (3) as withdrawal charges (contingent deferred
sales charges). In addition, certain deductions are made from the assets of each
Fund for investment management fees and expenses. These fees and expenses are
described in each Fund's prospectus and statement of additional information.
 
                                       29
<PAGE>
ADMINISTRATIVE CHARGES
 
    Each year on the Account Anniversary, the Company deducts from each
Participant's Account an annual account administration fee ("Account Fee") as
partial compensation for expenses relating to the issue and maintenance of the
Contract and the Participant's Account. In Account Years one through five the
Account Fee is equal to the lesser of $30 and 2% of the Participant's Account
Value; thereafter the Account Fee may be changed annually, but in no event may
it exceed the lesser of $50 and 2% of the Participant's Account Value. If a
Participant's Account is surrendered for its full value on other than the
Account Anniversary, the Account Fee will be deducted in full at the time of
such surrender. The Account Fee will be deducted on a pro rata basis from
amounts allocated to each Guarantee Period and each Sub-Account in which the
Participant's Account is invested at the time of such deduction. Also, the
Account Fee will be waived by the Company when: (1) the entire Participant's
Account Value has been allocated to the Fixed Account during the entire previous
Account Year; or (2) the Participant's Account Value is greater than $75,000 at
the time of such deduction. On the Annuity Commencement Date, the value of the
Participant's Account will be reduced by a proportionate amount of the Account
Fee to reflect the time elapsed between the last Account Anniversary and the day
before the Annuity Commencement Date. After the Annuity Commencement Date, an
annual Account Fee of $30 will be deducted in equal amounts from each variable
annuity payment made during the year. No deduction will be made from fixed
annuity payments.
 
    The Company makes a deduction from the Variable Account at the end of each
Valuation Period (during both the Accumulation Period and after annuity payments
begin) at an effective annual rate of 0.15% to reimburse the Company for those
administrative expenses attributable to the Contracts, the Participant's
Accounts and the Variable Account which exceed the revenues received from the
Account Fee. For a description of administrative services provided see
"Administration of the Contracts" on page 42 of this Prospectus.
 
    The Contract provides that the Company may modify the Account Fee and the
administrative expense charge, provided that such modification shall apply only
with respect to Participant's Accounts established after the effective date of
such modification (See "Modification"). The Company does not expect to make a
profit from the Account Fee or the administrative expense charge.
 
PREMIUM TAXES
 
    A deduction, when applicable, is made for premium or similar state or local
taxes (See Appendix B). It is currently the policy of the Company to deduct the
tax from the amount applied to provide an annuity at the time annuity payments
commence; however, the Company reserves the right to deduct such taxes on or
after the date they are incurred.
 
MORTALITY AND EXPENSE RISK CHARGE
 
    The mortality risk assumed by the Company arises from the contractual
obligation to continue to make annuity payments to each Annuitant regardless of
how long the Annuitant lives and regardless of how long all annuitants as a
group live. This assures each annuitant that neither the longevity of fellow
annuitants nor an improvement in the life expectancy generally will have an
adverse effect on the amount of any annuity payment received under the Contract.
The Company assumes this mortality risk by virtue of annuity rates incorporated
into the Contract which cannot be changed except, in the case of a Group
Contract only, with respect to Participant's Accounts established after the
effective date of such change, as provided in the section of this Prospectus
entitled "Modification". The expense risk assumed by the Company is the risk
that the administrative charges assessed under the Contract may be insufficient
to cover the actual total administrative expenses incurred by the Company.
 
    For assuming these risks, the Company makes a deduction from the Variable
Account at the end of each Valuation Period during both the Accumulation Period
and after annuity payments begin at an effective annual rate of 1.25%. If the
deduction is insufficient to cover the actual cost of the mortality and expense
risk undertaking, the Company will bear the loss. Conversely, if the deduction
proves more than sufficient, the excess will be profit to the Company and would
be available for any proper corporate purpose including, among other things,
payment of distribution expenses. The Company will recoup its expected costs
associated with registering and distributing the Contracts by the assessment of
the withdrawal charges (contingent deferred sales charges) described below.
However, the withdrawal charges may prove to be
 
                                       30
<PAGE>
insufficient to cover actual distribution expenses. If this is the case, the
deficiency will be met from the Company's general corporate funds which may
include amounts derived from the mortality and expense risk charges.
 
    A Group Contract provides that the Company may modify the mortality and
expense risk charge; however, such modification shall apply only with respect to
Participant's Accounts established after the effective date of such modification
(See "Modification"). Mortality and expense risk and administrative expense
charges are the only expenses of the Variable Account.
 
WITHDRAWAL CHARGES
 
    No deduction for sales charges is made from Purchase Payments. However, a
withdrawal charge (contingent deferred sales charge) of up to 6% of certain
amounts withdrawn, when applicable, will be used to cover certain expenses
relating to the sale of the Contracts, including commissions paid to sales
personnel, the costs of preparation of sales literature and other promotional
costs and acquisition expenses. Gross commissions paid on the sale of these
Contracts are not more than     % of the Purchase Payments. In addition, after
the first Account Year, a trail commission of no more than     % of the
Participant's Account Value may be paid (See "Cash Withdrawals" and "Withdrawal
Charges").
 
                               ANNUITY PROVISIONS
 
ANNUITY COMMENCEMENT DATE
 
    Annuity payments will begin on the Annuity Commencement Date which is
selected by the Participant, as specified in the Application. The date selected
by the Participant may not be sooner than the first day of the second calendar
month following the Date of Coverage. This date may be changed by the
Participant from time to time by written notice to the Company, provided that
notice of each change is received by the Company at least 30 days prior to the
then current Annuity Commencement Date and the new Annuity Commencement Date is
a date which is: (1) at least 30 days after the date notice of the change is
received by the Company; (2) the first day of a month; and (3) not later than
the first day of the first month following the Annuitant's 90th birthday, unless
otherwise restricted, in the case of a Qualified Contract, by the particular
retirement plan or by applicable law. In most situations, current law requires
that the Annuity Commencement Date under a Qualified Contract be no later than
April 1 following the year the Annuitant reaches age 70 1/2, and the terms of
the particular retirement plan may impose additional limitations. The Annuity
Commencement Date may also be changed by an election of an Annuity Option as
described in the Death Benefit section of this Prospectus.
 
    On the Annuity Commencement Date the Participant's Account will be cancelled
and its adjusted value will be applied to provide an annuity under one or more
of the options described below. No withdrawal charge will be imposed upon
amounts applied to purchase an annuity. However, the Market Value Adjustment may
apply, as noted under "Determination of Amount." NO PAYMENTS MAY BE REQUESTED
UNDER THE CONTRACT'S CASH WITHDRAWAL PROVISIONS ON OR AFTER THE ANNUITY
COMMENCEMENT DATE, AND NO CASH WITHDRAWAL WILL BE PERMITTED EXCEPT AS MAY BE
AVAILABLE UNDER THE ANNUITY OPTION ELECTED.
 
    Since the Contracts offered by this Prospectus may be issued in connection
with retirement plans which meet the requirements of Section 401, 403 or 408 of
the Internal Revenue Code, as well as certain non-qualified plans, reference
should be made to the terms of the particular plan for any limitations or
restrictions on the Annuity Commencement Date.
 
ELECTION--CHANGE OF ANNUITY OPTION
 
    During the lifetime of the Annuitant and prior to the Annuity Commencement
Date, the Participant may elect one or more of the Annuity Options described
below, or such other settlement option as may be agreed to by the Company, for
the Annuitant as Payee. The Participant may also change any election, but
written notice of any election or change of election must be received by the
Company at least 30 days prior to the Annuity Commencement Date. If no election
is in effect on the 30th day prior to the Annuity Commencement
 
                                       31
<PAGE>
Date, Annuity Option B, for a Life Annuity with 120 monthly payments certain,
will be deemed to have been elected. If there is no election of a sole Annuitant
in effect on the 30th day prior to the Annuity Commencement Date, the person
designated as "Co-Annuitant" will be the Payee under the applicable Annuity
Option.
 
    Any election may specify the proportion of the adjusted value of the
Participant's Account to be applied to provide a Fixed Annuity and a Variable
Annuity. In the event the election does not so specify, or if no election is in
effect on the 30th day prior to the Annuity Commencement Date, then the portion
of the adjusted value of the Participant's Account to be applied to provide a
Fixed Annuity and a Variable Annuity will be determined on a pro rata basis from
the composition of the Participant's Account on the Annuity Commencement Date.
 
    Annuity Options may also be elected by the Participant or the Beneficiary as
provided in the Death Benefit section of this Prospectus.
 
    Reference should be made to the terms of a particular retirement plan and
any applicable legislation for any limitations or restrictions on the options
which may be elected.
 
    NO CHANGE OF ANNUITY OPTION IS PERMITTED AFTER THE ANNUITY COMMENCEMENT
DATE.
 
ANNUITY OPTIONS
 
    No lump sum settlement option is available under the Contract. The
Participant may surrender a Contract prior to the Annuity Commencement Date;
however, any applicable surrender charge will be deducted from the cash
withdrawal payment and a Market Value Adjustment, if applicable, will be
applied.
 
    Annuity Options A, B, C and D are available to provide either a Fixed
Annuity or a Variable Annuity. Annuity Option E is available only to provide a
Fixed Annuity.
 
    Annuity Option A.  Life Annuity:  Monthly payments during the lifetime of
the Payee. This option offers a higher level of monthly payments than Annuity
Options B or C because no further payments are payable after the death of the
Payee and there is no provision for a death benefit payable to a Beneficiary.
 
    Annuity Option B.  Life Annuity with 60, 120, 180 or 240 Monthly Payments
Certain:  Monthly payments during the lifetime of the Payee and in any event for
60, 120, 180 or 240 months certain as elected. The election of a longer period
certain results in smaller monthly payments than would be the case if a shorter
period certain were elected. In the event of the death of the Payee under this
option, the Contract provides that if there is no designated beneficiary
entitled to the remaining payments then living, the discounted value of the
remaining payments, if any, will be calculated and paid in one sum to the
deceased Payee's estate. In addition, any beneficiary who becomes entitled to
any remaining payments under this option may elect to receive the amounts due
under this option in one sum. The discounted value for variable annuity payments
will be based on interest compounded annually at the assumed interest rate,
which will not be less than 3% per year. The discounted value for payments being
made on a fixed basis will be based on the interest rate initially used by the
Company to determine the amount of each payment.
 
    Annuity Option C.  Joint and Survivor Annuity:  Monthly payments payable
during the joint lifetime of the Payee and a designated second person and during
the lifetime of the survivor. During the lifetime of the survivor, variable
monthly payments, if any, will be determined using the percentage chosen at the
time of election of this option of the number of each type of Annuity Unit
credited to the Contract with respect to the Payee and fixed monthly payments,
if any, will be equal to the same percentage of the fixed monthly payment
payable during the joint lifetime of the Payee and the designated second person.
 
    * Annuity Option D.  Monthly Payments for a Specified Period
Certain:  Monthly payments for a specified period of time (at least five years
but not exceeding 30 years), as elected. In the event of the death of the Payee
under this option, the Contract provides that, as described under Annuity Option
B above, in certain circumstances the discounted value of the remaining
payments, if any, will be calculated and paid in one sum.
 
- - - ------------------------
* The election of this annuity option may result in the imposition of a penalty
tax.
 
                                       32
<PAGE>
    * Annuity Option E.  Fixed Payments:  The amount applied to provide fixed
payments in accordance with this option will be held by the Company at interest.
Fixed payments will be made in such amounts and at such times (at least over a
period of five years) as may be agreed upon with the Company and will continue
until the amount held by the Company with interest is exhausted. The final
payment will be for the balance remaining and may be less than the amount of
each preceding payment. Interest will be credited yearly on the amount remaining
unpaid at a rate which shall be determined by the Company from time to time but
which shall not be less than 3% per year, compounded annually. The rate so
determined may be changed at any time and as often as may be determined by the
Company, provided, however, that the rate may not be reduced more frequently
than once during each calendar year.
 
DETERMINATION OF ANNUITY PAYMENTS
 
    On the Annuity Commencement Date the Participant's Account will be cancelled
and its adjusted value will be applied to provide a Variable Annuity or a Fixed
Annuity or a combination of both. The adjusted value will be equal to the
Participant's Account Value at the end of the Valuation Period which ends
immediately preceding the Annuity Commencement Date, reduced by a proportionate
amount of the Account Fee to reflect the time elapsed between the last Account
Anniversary and the day before the Annuity Commencement Date, plus or minus any
applicable Market Value Adjustment and minus any applicable premium or similar
taxes.
 
    If the amount to be applied under any annuity option is less than $2,000, or
if the first annuity payment payable in accordance with such option is less than
$20, the Company will pay the amount to be applied in a single payment to the
Payee.
 
FIXED ANNUITY PAYMENTS
 
    The dollar amount of each fixed annuity payment will be determined in
accordance with the Annuity Payment Rates found in the Contract which are based
on the minimum guaranteed interest rate specified in the applicable Contract (at
least 3% per year), or, if more favorable to the Payee(s), in accordance with
the Annuity Payment Rates published by the Company and in use on the Annuity
Commencement Date.
 
VARIABLE ANNUITY PAYMENTS
 
    The dollar amount of the first variable annuity payment will be determined
in accordance with the Annuity Payment Rates found in the applicable Contract
which are based on an assumed interest rate of at least 3% per year, unless
these rates are changed with respect to a Group Contract (See "Modification").
All variable annuity payments other than the first are determined by means of
Annuity Units credited to the Contract with respect to the particular Payee. The
number of Annuity Units to be credited in respect of a particular Sub-Account is
determined by dividing that portion of the first variable annuity payment
attributable to that Sub-Account by the Annuity Unit value of that Sub-Account
at the end of the Valuation Period which ends immediately preceding the Annuity
Commencement Date. The number of Annuity Units of each particular Sub-Account
credited with respect to the particular Payee then remains fixed unless an
exchange of Annuity Units is made as described below. The dollar amount of each
variable annuity payment after the first may increase, decrease or remain
constant, and is equal to the sum of the amounts determined by multiplying the
number of Annuity Units of a particular Sub-Account credited with respect to the
particular Payee by the Annuity Unit value for the particular Sub-Account for
the Valuation Period which ends immediately preceding the due date of each
subsequent payment. If the net investment return on the assets of the Variable
Account is the same as the assumed interest rate, variable annuity payments will
remain level. If the net investment return exceeds the assumed interest rate
variable annuity payments will increase and, conversely, if it is less than the
assumed interest rate the payments will decrease.
 
    For a hypothetical example of the calculation of a Variable Annuity Payment,
see Appendix A.
 
VARIABLE ANNUITY UNIT VALUE
 
    The Annuity Unit value for each Sub-Account was established at $10.00 for
the first Valuation Period of the particular Sub-Account. The Annuity Unit Value
for the particular Sub-Account for any subsequent Valuation Period is determined
by multiplying the Annuity Unit value for the particular Sub-Account for the
 
- - - ------------------------
* The election of this annuity option may result in the imposition of a penalty
tax.
 
                                       33
<PAGE>
immediately preceding Valuation Period by the Net Investment Factor (See
"Variable Accumulation Value, Net Investment Factor") for the particular
Sub-Account for the current Valuation Period and then multiplying that product
by a factor to neutralize the assumed interest rate used to establish the
Annuity Payment Rates found in the Contract. For a one day Valuation Period the
factor is 0.99991902 using an assumed interest rate of 3% per year.
 
    For a hypothetical example of the calculation of the value of a Variable
Annuity Unit, see Appendix A.
 
EXCHANGE OF VARIABLE ANNUITY UNITS
 
    After the Annuity Commencement Date the Payee may, by filing a written
request with the Company, exchange the value of a designated number of Annuity
Units of particular Sub-Accounts then credited with respect to the particular
Payee into other Annuity Units, the value of which would be such that the dollar
amount of an annuity payment made on the date of the exchange would be
unaffected by the fact of the exchange. No more than twelve (12) exchanges may
be made within each Account Year.
 
    Exchanges may be made only between Sub-Accounts. Exchanges will be made
using the Annuity Unit values for the Valuation Period during which any request
for exchange is received by the Company.
 
ANNUITY PAYMENT RATES
 
    The Contract contains Annuity Payment Rates for each Annuity Option
described in this Prospectus. The rates show, for each $1,000 applied, the
dollar amount of: (a) the first monthly variable annuity payment based on the
assumed interest rate (at least 3%); and (b) the monthly fixed annuity payment,
when this payment is based on the minimum guaranteed interest rate (at least 3%
per year).These rates may be changed by the Company with respect to
Participant's Accounts established after the effective date of such change (See
"Modification").
 
    The annuity payment rates may vary according to the Annuity Option elected
and the adjusted age of the Payee. The Contract also describes the method of
determining the adjusted age of the Payee. The mortality table used in
determining the annuity payment rates for Options A, B and C is the 1983
Individual Annuitant Mortality Table.
 
                          OTHER CONTRACTUAL PROVISIONS
 
PAYMENT LIMITS
 
    The initial Purchase Payment credited to each Participant's Account must be
at least $5,000 and each additional Purchase Payment must be at least $1,000,
unless waived by the Company. In addition, the prior approval of the Company is
required before it will accept a Purchase Payment which would cause the value of
a Participant's Account to exceed $1,000,000. If the value of a Participant's
Account exceeds $1,000,000, no additional Purchase Payments will be accepted
without the prior approval of the Company. Purchase Payments may be made
annually, semi-annually, quarterly, monthly or at any other frequency acceptable
to the Company. The Participant may, subject to the minimum payment, increase or
decrease the amount of Purchase Payments or change the frequency of payment, but
the Participant is not obligated to continue Purchase Payments in the amount or
frequency elected. There are no penalties for failure to continue to make
Purchase Payments. While the Contract and the Participant's Account are in
force, Purchase Payments may be made at any time prior to the Annuity
Commencement Date.
 
DESIGNATION AND CHANGE OF BENEFICIARY
 
    The beneficiary designation contained in the Application will remain in
effect until changed. The interest of any Beneficiary is subject to the
particular Beneficiary surviving the Annuitant and, in the case of a Non-
Qualified Contract, the Participant as well.
 
    Subject to the rights of an irrevocably designated Beneficiary, the
Participant may change or revoke the designation of a Beneficiary at any time
while the Annuitant is living by filing with the Company a written beneficiary
designation or revocation in such form as the Company may require. The change or
revocation will not be binding upon the Company until it is received by the
Company. When it is so received the change
 
                                       34
<PAGE>
or revocation will be effective as of the date on which the beneficiary
designation or revocation was signed, but the change or revocation will be
without prejudice to the Company on account of any payment made or any action
taken by the Company prior to receiving the change or revocation.
 
    Reference should be made to the terms of a particular retirement plan and
any applicable legislation for any restrictions on the beneficiary designation.
 
EXERCISE OF CONTRACT RIGHTS
 
    An Individual Contract shall belong to the individual Participant to whom
the Contract is issued. A Group Contract shall belong to the Owner. In the case
of a Group Contract, all Contract rights and privileges may be expressly
reserved by the Owner, failing which, each Participant shall be entitled to
exercise such rights and privileges. In any case, such rights and privileges can
be exercised without the consent of the Beneficiary (other than an irrevocably
designated Beneficiary) or any other person. Such rights and privileges may be
exercised only during the lifetime of the Annuitant and prior to the Annuity
Commencement Date, except as otherwise provided in the Contract.
 
    The Annuitant becomes the Payee on and after the Annuity Commencement Date.
The Beneficiary becomes the Payee on the death of the Annuitant. Such Payees may
thereafter exercise such rights and privileges, if any, of ownership which
continue.
 
CHANGE OF OWNERSHIP
 
    Ownership of a Qualified Contract may not be transferred except to: (1) the
Annuitant; (2) a trustee or successor trustee of a pension or profit sharing
trust which is qualified under Section 401 of the Internal Revenue Code; (3) the
employer of the Annuitant provided that the Qualified Contract after transfer is
maintained under the terms of a retirement plan qualified under Section 403(a)
of the Internal Revenue Code for the benefit of the Annuitant; (4) the trustee
of an individual retirement account plan qualified under Section 408 of the
Internal Revenue Code for the benefit of the Participants under a Group
Contract; or (5) as otherwise permitted from time to time by laws and
regulations governing the retirement or deferred compensation plans for which a
Qualified Contract may be issued. Subject to the foregoing, a Qualified Contract
may not be sold, assigned, transferred, discounted or pledged as collateral for
a loan or as security for the performance of an obligation or for any other
purpose to any person other than the Company.
 
    The Owner of a Non-Qualified Contract may change the ownership of the
Contract during the lifetime of any Annuitant and prior to the last Annuity
Commencement Date; and each Participant, in like manner, may change the
ownership interest in a Contract. A change of ownership will not be binding upon
the Company until written notification is received by the Company. When such
notification is so received, the change will be effective as of the date on
which the request for change was signed by the Owner or Participant, as
appropriate, but the change will be without prejudice to the Company on account
of any payment made or any action taken by the Company prior to receiving the
change.
 
DEATH OF PARTICIPANT
 
    If a Participant under a Non-Qualified Contract dies prior to the Annuitant
and before the Annuity Commencement Date, that Participant's Account Value, plus
or minus any applicable Market Value Adjustment, must be distributed to the
"designated beneficiary" (as defined below) either (1) within five years after
the date of death of the Participant, or (2) as an annuity over some period not
greater than the life or expected life of the designated beneficiary, with
annuity payments beginning within one year after the date of death of the
Participant. For this purpose (and for purposes of Section 72(s) of the Internal
Revenue Code), the person named as Beneficiary shall be considered the
designated beneficiary, and if no person then living has been so named, then the
Annuitant shall automatically be the designated beneficiary. If the designated
beneficiary is the surviving spouse of the deceased Participant, the spouse can
elect to continue the Contract in the spouse's own name as Participant, in which
case these mandatory distribution requirements will apply on the spouse's death.
 
    When the deceased Participant was also the Annuitant, the Death Benefit
provision of the Contract controls unless the deceased Participant's surviving
spouse is the designated beneficiary and elects to continue the Contract in the
spouse's own name as both Participant and Annuitant.
 
                                       35
<PAGE>
    If the Payee dies on or after the Annuity Commencement Date and before the
entire accumulation under such Participant's Account has been distributed, the
remaining portion of such Participant's Account, if any, must be distributed at
least as rapidly as the method of distribution then in effect.
 
    In any case in which a non-natural person constitutes a holder of the
Contract for the purposes of Section 72(s) of the Internal Revenue Code, (1) the
distribution requirements described above shall apply upon the death of any
Annuitant, and (2) a change in any Annuitant shall be treated as the death of an
Annuitant.
 
    In all cases, no Participant or Beneficiary shall be entitled to exercise
any rights that would adversely affect the treatment of the Contract as an
annuity contract under the Internal Revenue Code.
 
    Any distributions upon the death of a Participant under a Qualified Contract
will be subject to the laws and regulations governing the particular retirement
or deferred compensation plan in connection with which the Qualified Contract
was issued.
 
VOTING OF FUND SHARES
 
    The Company will vote Fund shares held by the Sub-Accounts at meetings of
shareholders, or in connection with similar solicitations, of the Funds, but
will follow voting instructions received from persons having the right to give
voting instructions. Except in the case of a Group Contract where the right to
give voting instructions is reserved by the Owner, the Participant is the person
having the right to give voting instructions prior to the Annuity Commencement
Date. On or after the Annuity Commencement Date the Payee is the person having
such voting rights. Any shares attributable to the Company and Fund shares for
which no timely voting instructions are received will be voted by the Company in
the same proportion as the shares for which instructions are received from
Owners, Participants and Payees, as applicable.
 
    Owners of Qualified Contracts issued on a group basis may be subject to
other voting provisions of the particular plan and of the Investment Company Act
of 1940. Employees who contribute to plans which are funded by the Contracts may
be entitled to instruct the Owners as to how to instruct the Company to vote the
Fund shares attributable to their contributions. Such plans may also provide the
additional extent, if any, to which the Owners shall follow voting instructions
of persons with rights under the plans. If no voting instructions are received
from any such person with respect to a particular Participant's Account, the
Owner may instruct the Company as to how to vote the number of Fund shares for
which instructions may be given.
 
    Neither the Variable Account nor the Company is under any duty to provide
information concerning the voting instruction rights of persons who may have
such rights under plans, other than rights afforded by the Investment Company
Act of 1940, nor any duty to inquire as to the instructions received or the
authority of Owners, Participants or others, as applicable, to instruct the
voting of Fund shares. Except as the Variable Account or the Company has actual
knowledge to the contrary, the instructions given by Owners under Group
Contracts and Payees will be valid as they affect the Variable Account, the
Company and any others having voting instruction rights with respect to the
Variable Account.
 
    All Fund proxy material, together with an appropriate form to be used to
give voting instructions, will be provided to each person having the right to
give voting instructions at least ten days prior to each meeting of the
shareholders of a Fund. The number of Fund shares as to which each such person
is entitled to give instructions will be determined by the Company as of the
record date set by the Fund for such meeting, expected to be no later than 90
days. Prior to the Annuity Commencement Date, the number of Fund shares as to
which voting instructions may be given to the Company is determined by dividing
the value of all of the Variable Accumulation Units of the particular
Sub-Account credited to the Participant's Account by the net asset value of one
Fund share as of the same date. On or after the Annuity Commencement Date, the
number of Fund shares as to which such instructions may be given by a Payee is
determined by dividing the reserve held by the Company in the Sub-Account with
respect to the particular Payee by the net asset value of a Fund share as of the
same date. After the Annuity Commencement Date, the number of Fund shares as to
which a Payee is entitled to give voting instructions will generally decrease
due to the decrease in the reserve.
 
                                       36
<PAGE>
PERIODIC REPORTS
 
    During the Accumulation Period the Company will send the Participant, or
such other person having voting rights, at least once during each Account Year,
a statement showing the number, type and value of Accumulation Units credited to
the Participant's Account and the Fixed Accumulation Value of such account,
which statement shall be accurate as of a date not more than two months previous
to the date of mailing. In addition, every person having voting rights will
receive such reports or prospectuses concerning the Variable Account and the
Funds as may be required by the Investment Company Act of 1940 and the
Securities Act of 1933. The Company will also send such statements reflecting
transactions in the Participant's Account as may be required by applicable laws,
rules and regulations.
 
    Upon request, the Company will provide the Participant with information
regarding fixed and variable accumulation values.
 
SUBSTITUTED SECURITIES
 
    Shares of any or all Funds may not always be available for purchase by the
Sub-Accounts of the Variable Account or the Company may decide that further
investment in any such shares is no longer appropriate in view of the purposes
of the Variable Account. In either event, shares of another registered open-end
investment company or unit investment trust may be substituted both for Fund
shares already purchased by the Variable Account and/or as the security to be
purchased in the future provided that these substitutions have been approved by
the Securities and Exchange Commission, if required by law. In the event of any
substitution pursuant to this provision, the Company may make appropriate
endorsement to the Contract to reflect the substitution.
 
CHANGE IN OPERATION OF VARIABLE ACCOUNT
 
    At the Company's election and subject to any necessary vote by persons
having the right to give instructions with respect to the voting of Fund shares
held by the Sub-Accounts, the Variable Account may be operated as a management
company under the Investment Company Act of 1940 or it may be deregistered under
the Investment Company Act of 1940 in the event registration is no longer
required. Deregistration of the Variable Account requires an order by the
Securities and Exchange Commission. In the event of any change in the operation
of the Variable Account pursuant to this provision, the Company may make
appropriate endorsement to the Contract to reflect the change and take such
other action as may be necessary and appropriate to effect the change.
 
SPLITTING UNITS
 
    The Company reserves the right to split or combine the value of Variable
Accumulation Units, Annuity Units or any of them. In effecting any such change
of unit values, strict equity will be preserved and no change will have a
material effect on the benefits or other provisions of the Contract.
 
MODIFICATION
 
    Upon notice to the Participant, in the case of an Individual Contract, and
the Owner and Participant(s), in the case of a Group Contract (or the Payee(s)
during the annuity period), the Contract may be modified by the Company if such
modification: (i) is necessary to make the Contract or the Variable Account
comply with any law or regulation issued by a governmental agency to which the
Company or the Variable Account is subject; or (ii) is necessary to assure
continued qualification of the Contract under the Internal Revenue Code or other
federal or state laws relating to retirement annuities or annuity contracts; or
(iii) is necessary to reflect a change in the operation of the Variable Account
or the Sub-Account(s) (See "Change in Operation of Variable Account"); or (iv)
provides additional Variable Account and/or fixed accumulation options. In the
event of any such modification, the Company may make appropriate endorsement in
the Contract to reflect such modification.
 
    In addition, upon notice to the Owner, a Group Contract may be modified by
the Company to change the withdrawal charges, Account Fees, mortality and
expense risk charges, administrative expense charges, the tables used in
determining the amount of the first monthly variable annuity and fixed annuity
payments and the formula used to calculate the Market Value Adjustment, provided
that such modification shall apply only to Participant's Accounts established
after the effective date of such modification. In order to exercise its
modification rights in these particular instances, the Company must notify the
Owner of such modification
 
                                       37
<PAGE>
in writing. The notice shall specify the effective date of such modification
which must be at least 60 days following the date of mailing of the notice of
modification by the Company. All of the charges and the annuity tables which are
provided in the Group Contract prior to any such modification will remain in
effect permanently, unless improved by the Company, with respect to
Participant's Accounts established prior to the effective date of such
modification.
 
DISCONTINUANCE OF NEW PARTICIPANTS
 
    The Company, by giving 30 days' prior written notice to the Owner, may limit
or discontinue the acceptance of new Applications and the issuance of new
Certificates under a Group Contract. Such limitation or discontinuance shall
have no effect on rights or benefits with respect to any Participant's Accounts
established under such Group Contract prior to the effective date of such
limitation or discontinuance.
 
CUSTODIAN
 
    The Company is the Custodian of the assets of the Variable Account. The
Company will purchase Fund shares at net asset value in connection with amounts
allocated to the Sub-Accounts in accordance with the instructions of the
Participant and redeem Fund shares at net asset value for the purpose of meeting
the contractual obligations of the Variable Account, paying charges relative to
the Variable Account or making adjustments for annuity reserves held in the
Variable Account.
 
RIGHT TO RETURN
 
    If the Participant is not satisfied with the Contract it may be returned by
mailing it to the Company at the Annuity Service Mailing Address on the cover of
this Prospectus within ten days after it was delivered to the Participant. When
the Company receives the returned Contract it will be cancelled and the
Participant's Account Value at the end of the Valuation Period during which the
Contract was received by the Company will be refunded to the Participant.
However, if applicable state law so requires, the full amount of any Purchase
Payment(s) received by the Company will be refunded, the "free look" period may
be greater than ten days and alternative methods of returning the Contract may
be acceptable.
 
    With respect to Individual Retirement Accounts, under the Code a Participant
establishing an Individual Retirement Account must be furnished with a
disclosure statement containing certain information about the Contract and
applicable legal requirements. This statement must be furnished on or before the
date the Individual Retirement Account is established. If the Participant is
furnished with such disclosure statement before the seventh day preceding the
date the Individual Retirement Account is established, the Participant will not
have any right of revocation. If the disclosure statement is furnished after the
seventh day preceding the establishment of the Individual Retirement Account,
then the Participant may give a notice of revocation to the Company at any time
within seven days after the Date of Coverage. Upon such revocation, the Company
will refund the Purchase Payment(s) made by the Participant. The foregoing right
of revocation with respect to an Individual Retirement Account is in addition to
the return privilege set forth in the preceding paragraph. The Company will
allow a participant establishing an Individual Retirement Account a "ten day
free-look," notwithstanding the provisions of the Code.
 
                               FEDERAL TAX STATUS
 
INTRODUCTION
 
    The Contracts described in this Prospectus are designed for use by personal
retirement plans and employer, association and other group retirement plans
under the provisions of Sections 401 (including Section 401(k)), 403, 408(b),
408(c), 408(k) and 408(p) of the Internal Revenue Code (the "Code"), as well as
certain non-qualified retirement plans, such as payroll savings plans. As noted
above, the Company may begin offering Participants under Contracts used in
connection with individual retirement plans under Section 408 the opportunity to
convert the Contracts into Contracts used in connection with Roth IRAs under
Section 408A, and may also begin offering new Contracts for use in connection
with Roth IRAs. The ultimate effect of federal income taxes may depend upon the
type of retirement plan for which the Contract is purchased and a number of
different factors. This discussion is general in nature, is based upon the
Company's understanding of current federal income tax laws, and is not intended
as tax advice. Congress
 
                                       38
<PAGE>
has the power to enact legislation affecting the tax treatment of annuity
contracts, and such legislation could be applied retroactively to Contracts
purchased before the date of enactment. Also, because the Internal Revenue Code,
as amended, is not in force in the Commonwealth of Puerto Rico, some references
in this discussion will not apply to Contracts issued in Puerto Rico. Any person
contemplating the purchase of a Contract should consult a qualified tax adviser.
THE COMPANY DOES NOT MAKE ANY GUARANTEE REGARDING THE TAX STATUS, FEDERAL, STATE
OR LOCAL, OF ANY CONTRACT OR ANY TRANSACTION INVOLVING THE CONTRACTS.
 
TAX TREATMENT OF THE COMPANY AND THE VARIABLE ACCOUNT
 
    The Company is taxed as a life insurance company under the Code. The
operations of the Variable Account are accounted for separately from other
operations of the Company for purposes of federal income taxation, but the
Variable Account is not taxable as a regulated investment company or otherwise
as an entity separate from the Company. The income of the Variable Account
(consisting primarily of interest, dividends and net capital gains) is not
taxable to the Company to the extent that it is applied to increase reserves
under contracts participating in the Variable Account.
 
TAXATION OF ANNUITIES IN GENERAL
 
    Purchase Payments made under Non-Qualified Contracts are not deductible from
the Participant's income for federal income tax purposes. Participants under
Qualified Contracts should consult a tax adviser regarding the tax treatment of
Purchase Payments.
 
    Generally, no taxes are imposed on the increase in the value of a Contract
until a distribution occurs, either as an annuity payment or as a cash
withdrawal or lump-sum payment prior to the Annuity Commencement Date. However,
corporate Owners and Participants and other Owners and Participants that are not
natural persons are subject to current taxation on the annual increase in the
value of a Non-Qualified Contract, unless the non-natural person holds the
Contract as agent for a natural person (such as where a bank or other entity
holds a Contract as trustee under a trust agreement). This current taxation of
annuities held by non-natural persons does not apply to earnings accumulated
under an immediate annuity, which the Code defines as a single premium contract
with an annuity commencement date within one year of the date of purchase. Also,
the Internal Revenue Service could assert that Owners or Participants under both
Qualified and Non-Qualified Contracts annually receive and are subject to tax on
a deemed distribution equal to the cost of any life insurance benefit provided
by the Contract.
 
    The following discussion applies both with respect to Individual Contracts
and Group Contracts. Because the Code is unclear in its application to a group
annuity contract where the Owner is distinct from the individuals who receive
the Contract benefits, the discussion as applied to the Group Contracts is the
Company's best understanding of the operation of the Code in the context of
group contracts. However, Owners and Participants should consult a qualified tax
adviser.
 
    A partial cash withdrawal (that is, a withdrawal of less than the entire
Participant's Account Value) under a Non-Qualified Contract before the Annuity
Commencement Date is treated first as a withdrawal from the increase in the
Participant's Account Value, rather than as a return of Purchase Payments. The
amount of the withdrawal allocable to this increase will be includible in the
Participant's income and subject to tax at ordinary income rates. If part or all
of a Participant's Account Value is assigned or pledged as collateral for a
loan, the amount assigned or pledged must be treated as if it were withdrawn
from the Contract.
 
    In the case of annuity payments under a Non-Qualified Contract after the
Annuity Commencement Date, a portion of each payment is treated as a nontaxable
return of Purchase Payments. The nontaxable portion is determined by applying to
each annuity payment an "exclusion ratio," which, in general, is the ratio that
the total amount the Participant paid for the Contract bears to the Payee's
expected return under the Contract. The remainder of the payment is taxable at
ordinary income rates.
 
    The total amount that a Payee may exclude from income through application of
the "exclusion ratio" is limited to the amount the Participant paid for the
Contract. If the Annuitant survives for his full life expectancy, so that the
Payee recovers the entire amount paid for the Contract, any subsequent annuity
payments will be fully taxable as income. Conversely, if the Annuitant dies
before the Payee recovers the entire amount paid, the Payee will be allowed a
deduction for the amount of unrecovered Purchase Payments.
 
                                       39
<PAGE>
    Taxable cash withdrawals and lump-sum payments from Non-Qualified Contracts
may be subject to a penalty tax equal to 10% of the amount treated as taxable
income. This 10% penalty also may apply to certain annuity payments. This
penalty will not apply in certain circumstances (such as where the distribution
is made upon the death of the Participant). The withdrawal penalty also does not
apply to distributions under an immediate annuity (as defined above).
 
    In the case of a Qualified Contract, distributions generally are taxable and
distributions made prior to age 59 1/2 are subject to a 10% penalty tax,
although this penalty tax will not apply in certain circumstances. Certain
distributions, known as "eligible rollover distributions," if rolled over to
certain other qualified retirement plans (either directly or after being
distributed to the Participant or Payee), are not taxable until distributed from
the plan to which they are rolled over. In general, an eligible rollover
distribution is any taxable distribution other than a distribution that is part
of a series of payments made for life or for a specified period of ten years or
more. Owners, Participants, Annuitants, Payees and Beneficiaries should seek
qualified advice about the tax consequences of distributions, withdrawals,
rollovers and payments under the retirement plans in connection with which the
Contracts are purchased.
 
    If the Participant under a Non-Qualified Contract dies, the value of the
Contract generally must be distributed within a specified period (See "Other
Contractual Provisions -- Death of Participant"). For contracts owned by
non-natural persons, a change in the Annuitant is treated as the death of the
Participant.
 
    A purchaser of a Qualified Contract should refer to the terms of the
applicable retirement plan and consult a tax adviser regarding distribution
requirements upon the death of the Participant.
 
    A transfer of a Non-Qualified Contract by gift (other than to the
Participant's spouse) is treated as the receipt by the Participant of income in
an amount equal to the Participant's Account Value minus the total amount paid
for the Contract.
 
    The Company will withhold and remit to the U.S. government a part of the
taxable portion of each distribution made under a Non-Qualified Contract or
under a Qualified Contract issued for use with an individual retirement account
unless the Participant or Payee provides his or her taxpayer identification
number to the Company and notifies the Company (in the manner prescribed) before
the time of the distribution that he or she chooses not to have any amounts
withheld.
 
    In the case of distributions from a Qualified Contract (other than
distributions from a Contract issued for use with an individual retirement
account), the Company or the plan administrator must withhold and remit to the
U.S. government 20% of each distribution that is an eligible rollover
distribution (as defined above) unless the Participant or Payee elects to make a
direct rollover of the distribution to another qualified retirement plan that is
eligible to receive the rollover. If a distribution from a Qualified Contract is
not an eligible rollover distribution, then the Participant or Payee can choose
not to have amounts withheld as described above for Non-Qualified Contracts and
Qualified Contracts issued for use with individual retirement accounts.
 
    Amounts withheld from any distribution may be credited against the
Participant's or Payee's federal income tax liability for the year of the
distribution.
 
    The Internal Revenue Service has issued regulations that prescribe
investment diversification requirements for mutual fund series underlying
nonqualified variable contracts. Contracts that do not comply with these
regulations do not qualify as annuities for federal income tax purposes, and
therefore the annual increase in the value of such contracts is subject to
current taxation. The Company believes that the Funds comply with the
regulations.
 
    The preamble to the regulations states that the Internal Revenue Service may
promulgate guidelines under which a variable contract will not be treated as an
annuity for tax purposes if the owner has excessive control over the investments
underlying the contract. It is not known whether such guidelines, if in fact
promulgated, would have retroactive effect. If guidelines are promulgated, the
Company will take any action (including modification of the Contract and/or the
Variable Account) necessary to comply with the guidelines.
 
                                       40
<PAGE>
    THE FOLLOWING INFORMATION SHOULD BE CONSIDERED ONLY WHEN AN IMMEDIATE
ANNUITY CONTRACT AND A DEFERRED ANNUITY CONTRACT ARE PURCHASED TOGETHER: The
Company understands that the Treasury Department is in the process of
reconsidering the tax treatment of annuity payments under an immediate annuity
contract (as defined above) purchased together with a deferred annuity contract.
The Company believes that any adverse change in the existing tax treatment of
such immediate annuity contracts is likely to be prospective, that is, it would
not apply to contracts issued before such a change is announced. However, there
can be no assurance that any such change, if adopted, would not be applied
retroactively.
 
QUALIFIED RETIREMENT PLANS
 
    The Qualified Contracts described in this Prospectus are designed for use
with several types of qualified retirement plans. The tax rules applicable to
participants in such qualified retirement plans vary according to the type of
plan and its terms and conditions. Therefore, no attempt is made herein to
provide more than general information about the use of the Qualified Contracts
with the various types of qualified retirement plans. Participants under such
plans as well as Owners, Annuitants, Payees and Beneficiaries are cautioned that
the rights of any person to any benefits under these plans may be subject to the
terms and conditions of the plans themselves, regardless of the terms and
conditions of the Qualified Contracts issued in connection therewith. Any person
contemplating the purchase of a Qualified Contract should consult a qualified
tax adviser. In addition, Owners, Participants, Payees, Beneficiaries and
administrators of qualified retirement plans should consider and consult their
tax adviser concerning whether the Death Benefit payable under the Contract
affects the qualified status of their retirement plan. Following are brief
descriptions of various types of qualified retirement plans and the use of the
Qualified Contracts in connection therewith.
 
PENSION AND PROFIT-SHARING PLANS
 
    Sections 401(a), 401(k) and 403(a) of the Code permit business employers and
certain associations to establish various types of retirement plans for
employees. The Tax Equity and Fiscal Responsibility Act of 1982 eliminated most
differences between qualified retirement plans of corporations and those of
self-employed individuals. The Contract may be purchased by those who would have
been covered under the rules governing old H.R. 10 (Keogh) Plans as well as by
corporate plans. Such retirement plans may permit the purchase of the Qualified
Contracts to provide benefits under the plans. Employers intending to use the
Qualified Contracts in connection with such plans should seek qualified advice
in connection therewith.
 
TAX-SHELTERED ANNUITIES
 
    Section 403(b) of the Code permits public school employees and employees of
certain types of charitable, educational and scientific organizations specified
in Section 501(c) (3) of the Code to purchase annuity contracts and, subject to
certain limitations, exclude the amount of purchase payments from gross income
for tax purposes. These annuity contracts are commonly referred to as
"Tax-Sheltered Annuities." Purchasers of the Qualified Contracts for such
purposes should seek qualified advice as to eligibility, limitations on
permissible amounts of Purchase Payments and tax consequences of distributions
(See "Section 403(b) Annuities").
 
INDIVIDUAL RETIREMENT ACCOUNTS
 
    Sections 219 and 408 of the Code permit eligible individuals to contribute
to an individual retirement program, including Simplified Employee Pension
Plans, Employer/Association of Employees Established Individual Retirement
Account Trusts, and Simple Retirement Accounts, known as an Individual
Retirement Account ("IRA"). These IRA's are subject to limitations on the amount
that may be contributed, the persons who may be eligible, and on the time when
distributions may commence. In addition, certain distributions from some other
types of retirement plans may be placed on a tax-deferred basis in an IRA. Sale
of the Contracts for use with IRA's may be subject to special requirements
imposed by the Internal Revenue Service. Purchasers of the Contracts for such
purposes will be provided with such supplementary information as may be required
by the Internal Revenue Service or other appropriate agency, and will have the
right to revoke the Contract under certain circumstances as described in the
section of this Prospectus entitled "Right to Return Contract."
 
                                       41
<PAGE>
ROTH IRAS
 
    Section 408A of the Code permits an individual to contribute to an
individual retirement program called a Roth IRA. Unlike contributions to a
regular IRA under Section 408 of the Code, contributions to a Roth IRA are not
made on tax-deferred basis, but distributions are tax-free if certain
requirements are satisfied. Like regular IRAs, Roth IRAs are subject to
limitations on the amount that may be contributed and the time when
distributions may commence. A regular IRA may be converted into a Roth IRA, and
the resulting income may be spread over four years if the conversion occurs
before January 1, 1999. If and when Contracts are made available for use with
Roth IRAs, they may be subject to special requirements imposed by the Internal
Revenue Service. Purchasers of the Contracts for this purpose will be provided
with such supplementary information as may be required by the Internal Revenue
Service or other appropriate agency.
 
                        ADMINISTRATION OF THE CONTRACTS
 
    The Company performs certain administrative functions relating to the
Contracts, the Participant's Accounts, and the Variable Account. These functions
include, but are not limited to, maintaining the books and records of the
Variable Account and the Sub-Accounts; maintaining records of the name, address,
taxpayer identification number, Contract number, Participant's Account number
and type, the status of each Participant's Account and other pertinent
information necessary to the administration and operation of the Contracts;
processing Applications, Purchase Payments, transfers and full and partial
surrenders; issuing Contracts and Certificates; administering annuity payments;
furnishing accounting and valuation services; reconciling and depositing cash
receipts; providing confirmations; providing toll-free customer service lines;
and furnishing telephonic transfer services.
 
                         DISTRIBUTION OF THE CONTRACTS
 
    The offering of the Contracts is continuous. The Contracts will be sold by
licensed insurance agents in those states where the Contracts may be lawfully
sold. Such agents will be registered representatives of broker-dealers
registered under the Securities Exchange Act of 1934 who are members of the
National Association of Securities Dealers, Inc. and who have entered into
distribution agreements with the Company and the General Distributor, Clarendon
Insurance Agency, Inc. ("Clarendon"), One Sun Life Executive Park, Wellesley
Hills, Massachusetts 02181, a wholly-owned subsidiary of the Company. Clarendon
is registered with the Securities and Exchange Commission under the Securities
Exchange Act of 1934 as broker-dealer and is a member of the National
Association of Securities Dealers, Inc. Clarendon also acts as the general
distributor of certain other annuity contracts issued by the Company and its
wholly-owned subsidiary, Sun Life Insurance and Annuity Company of New York, and
variable life insurance contracts issued by the Company. Commissions and other
distribution compensation will be paid by the Company and will not be more than
  % of Purchase Payments. In addition, after the first Account Year, broker
dealers who have entered into distribution agreements with the Company may
receive an annual renewal commission of no more than   % of the Participant's
Account Value. In addition to commissions, the Company may, from time to time,
pay or allow additional promotional incentives, in the form of cash or other
compensation. In some instances, such other incentives may be offered only to
certain broker-dealers that sell or are expected to sell during specified time
periods certain minimum amounts of the Contracts or other contracts offered by
the Company. Commissions will not be paid with respect to Participant's Accounts
established for the personal account of employees of the Company or any of its
affiliates, or of persons engaged in the distribution of the Contracts, or of
immediate family members of such employees or persons. In addition, commissions
may be waived or reduced in connection with certain transactions described under
"Waivers, Reduced Charges; Credits; Bonus Guaranteed Interest Rates."
 
                                       42
<PAGE>
                    ADDITIONAL INFORMATION ABOUT THE COMPANY
 
SELECTED FINANCIAL DATA
 
    The following selected financial data for the Company should be read in
conjunction with the financial statements and notes thereto included in this
Prospectus beginning on page   .
 
<TABLE>
<CAPTION>
                                                          FOR THE YEARS ENDED DECEMBER 31
                                   ------------------------------------------------------------------------------
                                        1997            1996            1995            1994            1993
                                   --------------  --------------  --------------  --------------  --------------
<S>                                <C>             <C>             <C>             <C>             <C>
                                                                     (IN 000'S)
Revenues
  Premiums, annuity deposits and
   other revenue.................  $    2,513,741  $    2,131,939  $    1,883,901  $    1,997,525  $    2,443,310
  Net investment income and
   realized gains................         301,524         312,870         315,966         312,583         311,322
                                   --------------  --------------  --------------  --------------  --------------
                                        2,815,265       2,444,809       2,199,867       2,310,108       2,754,632
                                   --------------  --------------  --------------  --------------  --------------
Benefits and expenses
  Policyholder benefits                 2,469,215       2,149,145       1,995,208       2,102,290       2,515,320
  Other expenses                          206,066         175,342         150,937         186,892         232,365
                                   --------------  --------------  --------------  --------------  --------------
                                        2,675,281       2,324,487       2,146,145       2,289,182       2,747,685
                                   --------------  --------------  --------------  --------------  --------------
Operating gain                            139,984         120,322          53,722          20,926           6,947
Federal income tax expense
  (benefit)                                10,742          (2,702)         17,807          19,469           3,691
                                   --------------  --------------  --------------  --------------  --------------
Net income                         $      129,242  $      123,024  $       35,915  $        1,457  $        3,256
                                   --------------  --------------  --------------  --------------  --------------
                                   --------------  --------------  --------------  --------------  --------------
Assets                             $   15,927,045  $   13,621,952  $   12,359,683  $   10,117,822  $    9,179,090
                                   --------------  --------------  --------------  --------------  --------------
                                   --------------  --------------  --------------  --------------  --------------
Surplus notes                      $      565,000  $      315,000  $      650,000  $      335,000  $      335,000
                                   --------------  --------------  --------------  --------------  --------------
                                   --------------  --------------  --------------  --------------  --------------
</TABLE>
 
See Note 1 to financial statements for the effect of the reinsurance agreements
on net income.
See Note 1 to financial statements for changes in accounting principles and
reporting.
See discussion under Recent Reorganization below.
 
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS.
 
FINANCIAL CONDITION
 
ASSETS
 
    For management purposes it is the Company's practice to segment its general
account to facilitate the matching of assets and liabilities; however, all
general account assets stand behind all general account liabilities. A majority
of the Company's assets are income producing investments. Particular attention
is paid to the quality of these assets.
 
    The Company's bond holdings consist of a diversified portfolio of both
public and private issues. It is the Company's policy to acquire only investment
grade securities. Private placements are rated internally with reference to the
National Association of Insurance Commissioners ("NAIC") designation issued by
the NAIC Securities Valuation Office. The overall quality of the Company's bond
portfolio remains high. At December 31, 1997, 4.6% of the Company's holdings of
bonds were rated below investment grade (i.e. below NAIC rating "1" or "2").
 
    The Company holds real estate primarily because such investments
historically have offered better yields over the long-term than fixed income
investments. Real estate investments are used to enhance the yield of products
with long-term liability durations. Properties for which market value is lower
than cost
 
                                       43
<PAGE>
adjusted for depreciation (book value) are reported at market value. During
1997, the change in the difference between the market value and book value for
properties reported at market value was $3,377,000.
 
    Significant attention has been given to insurance companies' exposure to
mortgage loans secured by real estate. The Company had a mortgage portfolio of
$684,035,000 at December 31, 1997, representing 19.8% of cash and invested
assets. At December 31, 1996, mortgage loans represented 26.9% of cash and
invested assets. The Company underwrites commercial mortgages with a maximum
loan to value ratio of 75%. The Company as a rule invests only in properties
that are almost fully leased. The portfolio is diversified by region and by
property type. The level of arrears in the portfolio is substantially below the
industry average. At December 31, 1997, the Company's portfolio did not contain
any mortgage loans which were 60 days or more in arrears, compared to the most
recent industry delinquency ratio published by the American Council of Life
Insurance of 1.35%. The expense in the year for the provision for losses and for
losses on foreclosures was $711,000.
 
    In the normal course of business, the Company makes commitments to purchase
investments at a future date. As of December 31, 1997 the Company had
outstanding mortgage commitments of $12,300,000 which will be funded during
1998.
 
    On December 24, 1997, The Company transferred all of its outstanding shares
of MFS to its parent, Life Holdco, in the form of a dividend. As a result of
this transaction the Company realized a $21,195,000 capital gain and recorded a
$159,722,000 dividend. This dividend included an intercompany tax receivable of
$91,000,000. The transfer of MFS is not expected to have any significant effect
on the ongoing operations of the Company. However, the future income of the
Company will decrease as it will no longer receive dividend income from MFS.
 
LIABILITIES
 
    The majority of the Company's liabilities consist of reserves for life
insurance and annuity contracts and deposit funds.
 
CAPITAL AND SURPLUS
 
    Total capital stock and surplus of the Company was $832,695,000 at December
31, 1997. The Company issued surplus notes during 1997 totaling $250,000,000 to
its parent, Life Holdco. The Company's management considers its surplus position
to be adequate.
 
RESULTS OF OPERATIONS
 
1997 COMPARED TO 1996
 
    Net income from operations after dividends to policyholders and before
federal income taxes decreased by $2.9 million for the year ending December 31,
1997 as compared to December 31, 1996. Net income associated with the
reinsurance agreements with the ultimate parent increased $2.1 million in 1997.
The net income improvement in the reinsured business results primarily from
improved investment performance. Prior to reinsurance, earnings from the life
line of business remained relatively flat. The earnings of the Company's
retirement products and services line, which markets combination fixed/variable
annuities, decreased $5.0 million. During 1997, the Company focused its
marketing efforts on its fixed/variable annuity sales and discontinued sales of
its group pension guaranteed interest contracts.
 
    The Company's net income reflects dividends from MFS of $33,110,000 in net
investment income, an income tax benefit of $25,809,000 and a realized gain of
$21,195,000 as a result of the reorganization noted above. Although the ongoing
operations of the Company will not be significantly effected by the
reorganization, the future income of the Company will decrease as it will no
longer receive dividends from MFS.
 
    Total income increased by $347.9 million for the year ended December 31,
1997 as compared to December 31, 1996. Sales of combination fixed/variable
annuities (net of annuitizations) increased by $527.4 million primarily due to
the introduction in late 1996, of a dollar cost averaging (DCA) sales program.
This program credits a bonus rate of interest on the fixed annuity deposit
during the first year. Purchase payments allocated to the DCA program are
deposited into the fixed account and periodically transferred to the variable
Sub-accounts during the following year. Reinsurance had the effect of increasing
income by
 
                                       44
<PAGE>
approximately $8.9 million. Premiums and annuity considerations decreased by
$6.6 million reflecting decreased annuitizations. Sales of group pension
guaranteed interest contracts decreased by $133 million. Net investment income
decreased by $33.5 million reflecting both the decrease in the general account
invested assets and $9.2 million decrease in dividends from subsidiaries. As
noted above, the future income of the Company will decrease as it will no longer
receive dividend income from MFS.
 
    Benefits and expenses increased by $346.6 million for the year ended
December 31, 1997 as compared to December 31, 1996. Reinsurance had the effect
of increasing benefits and expenses by $2.7 million. Death benefits, annuity
payments and surrender benefits and other fund withdrawals increased by $338.4
million primarily as a result of increased surrenders and withdrawals from
separate account contracts for which the surrender charge has expired. Policy
reserves decreased by $23 million, reflecting decreased annuitizations and lower
increases in reserves for minimum death benefit guarantees. The decrease in
liability for premium and other deposit funds of $55.3 reflects higher
surrenders of contracts described above. Commissions increased by $22.8 million,
reflecting the increase in total sales of combination fixed/variable annuities.
General expenses increased by $9.9 million reflecting an increase in salaries
due to staff increases associated with increased sales and non-recurring costs
associated with moving the retirement products and services facility to a new
location. Transfers to separate accounts increased by $53.9 million, reflecting
increased exchange activity out of the fixed account into the separate account,
associated with the DCA activity.
 
1996 COMPARED TO 1995
 
    Net income from operations after dividends to policyholders and before
federal income taxes increased by $61.1 million for the year ending December 31,
1996 as compared to December 31, 1995. Net income associated with the
reinsurance agreements with the parent increased by $23.9 in 1996. The net
income improvement in the reinsured business results from improved mortality
experience, improved investment performance and fewer significant death claims
in 1996 as compared to 1995. Prior to reinsurance, earnings from the life line
of business remained relatively flat. The remaining $37.2 increase is
attributable to the Company's retirement products and services line of business,
which market combination fixed/variable annuities and group pension guaranteed
investment contracts. The decline in interest rates during 1995 resulted in the
split of these combination fixed/variable annuity sales to change from 45% fixed
and 55% variable in 1995 to 25% fixed and 75% variable in 1996. In addition,
total gross sales increased by $235.9 million in 1996 as compared to 1995. The
declining interest rate environment and strong market performance in 1995
resulted in unrealized gains on assets held in the separate accounts, which
generated a substantial increase in fees calculated as a percentage of the
separate account net assets, which are then transferred to the general account.
The declining interest rates also resulted in increases in reserves due to the
increase in the market value adjustment provision of certain fixed annuities.
The resultant reserve increases were in excess of the unrealized gains causing
strain on the 1995 earnings. In 1996, interest rates increased, resulting in a
reduction in the unrealized gains on assets held in the separate accounts and a
corresponding reduction in reserves and a release of some of the reserve strain
incurred in 1995. The earnings on these market value adjusted products fluctuate
as the change in the market value of the assets do not move in tandem with the
change in the market value of the liabilities.
 
    Total income increased by $239.4 million for the year ended December 31,
1996 as compared to December 31, 1995. Sales of combination fixed/variable
annuities (net of annuitizations) increased by $282.7 million primarily due to
an increase in variable sales held in the separate accounts. This increase in
variable sales was driven by strong performance in the stock market. Reinsurance
had the effect of increasing income by approximately $9.4 million. Premiums and
annuity considerations increased by $8.2 million reflecting increased
annuitizations. Considerations from supplementary contracts increased by $1.2
million. Sales of group pension guaranteed investment contracts decreased by $53
million as this market remains highly competitive and sensitive to small changes
in guaranteed interest rates. Net investment income decreased by $9.1 million,
reflecting a decrease in the general account invested assets.
 
    Benefits and expenses increased by $178.3 million for the year ended
December 31, 1996 as compared to December 31, 1995. Reinsurance had the effect
of decreasing benefits and expenses by $14.5 million. Deaths, annuity payments
and surrender benefits and other funds withdrawals increased by
 
                                       45
<PAGE>
$438.9 million as a result of increased surrenders of fixed annuities for which
interest rate guarantee periods have expired as well as withdrawals from the
separate accounts. Policy reserves increased by $9.4 million, reflecting
increased annuitizations and increased reserves for minimum death benefit
guarantees. The decrease in liability for premium and other deposit funds of
$405.9 reflects lower interest rates and higher surrenders of contracts
described above. Commissions increased by $21.8 million, reflecting the increase
in total sales of combination fixed/variable annuities. General expenses
increased by $2.6 million reflecting an increase in salaries due to staff
increases and retainer fees. Transfers to separate accounts increased by $126.8
million, reflecting increased exchange activity out of the general account into
the separate accounts.
 
LIQUIDITY
 
    The Company's cash inflow consists primarily of premiums on insurance and
annuity products, income from investments, repayments of investment principal
and sales of investments. The Company's cash outflow is primarily to meet death
and other maturing insurance and annuity contract obligations, to pay out on
contract terminations, to fund investment commitments and to pay normal
operating expenses and taxes. Cash outflows are met from the normal net cash
inflows.
 
    The Company segments its business internally and matches projected cash
inflows and outflows within each segment. Targets for money market holdings are
established for each segment, which in the aggregate meet the day to day cash
needs of the Company. If greater liquidity is required, government issued bonds,
which are highly liquid, are sold to provide the necessary funds. Government and
publicly traded corporate bonds comprise 58% of the Company's long-term bond
holdings.
 
    Management believes that the Company's sources of liquidity are more than
adequate to meet its anticipated needs.
 
YEAR 2000 COMPLIANCE
 
    The Company's business, financial condition, and results of operations could
be materially and adversely affected by the failure of its systems and
applications (or those either provided or operated by third-parties) to properly
operate or manage dates beyond the year 1999. However, the Company has
investigated the nature and extent of the work necessary to render its computer
systems capable of processing beyond the turn of the century ("Year 2000
compliant"), and has made substantial progress toward achieving this goal,
including upgrading and/or replacing existing systems. The Company expects that
its principal systems will be Year 2000 compliant by the end of 1998, leaving
1999 for extensive testing. While it is believed that these efforts involve
substantial costs, the Company closely monitors associated costs and continues
to evaluate associated risks based on actual expenses. Based on available
information, the Company believes that it will be able to manage its total Year
2000 transition without a material adverse effect on its business operations,
financial condition, or results of operations.
 
RECENT REORGANIZATION
 
    Effective December 24, 1997, the Company and its ultimate parent, Sun Life
Assurance Company of Canada ("Sun Life of Canada"), reorganized the corporate
structure of a part of their United States business operations, by completing,
with the approval of the Delaware Insurance Department, the establishment of a
two-tier holding company structure. In connection with this reorganization,
Massachusetts Financial Services Company ("MFS"), the registered investment
adviser that serves as adviser to the MFS/Sun Life Series Trust and the Compass
Variable Accounts, is no longer a subsidiary of the Company, but remains under
the control of Sun Life of Canada through two other wholly-owned holding company
subsidiaries. On December 24, 1997. The Company's stock in MFS was transferred
via a dividend to the Company's immediate parent, Sun Life of Canada (U.S.)
Holdings, Inc. There is no change in directors, officers, or day-to-day
management of any of the companies within this holding company system and, in
the case of MFS, its executive officers continue to report to the Chairman of
Sun Life of Canada.
 
    MFS, which was acquired by the Company in 1982, has approximately
$70,200,000,000 under management as of December 31, 1997. The Company's
Statutory Statements of Operations for the year ended December 31, 1997,
reflected dividends from MFS of $33,110,000 in net investment income, an income
tax benefit of $25,809,000 and a realized gain of $21,195,000. The
reorganization is not expected to have any significant effect on the ongoing
operations of MFS or the Company.
 
                                       46
<PAGE>
REINSURANCE
 
    The Company has agreements with its parent company which provide that the
parent company will reinsure the mortality risks of the individual life
insurance contracts previously sold by the Company. Under these agreements basic
death benefits and supplementary benefits are reinsured on a yearly renewable
term basis and coinsurance basis, respectively. Reinsurance transactions under
these agreements in 1997 had the effect of decreasing net income from operations
by $2,658,000.
 
    Effective January 1, 1991 the Company entered into an agreement with the
parent company under which certain individual life insurance contracts issued by
the parent were reinsured by the Company on a 90% coinsurance basis. Also
effective January 1, 1991 the Company entered into an agreement with the parent
which provides that the parent will reinsure the mortality risks in excess of
$500,000 per policy for the individual life insurance contracts assumed by the
Company in the reinsurance agreement described above. Death benefits are
reinsured on a yearly renewable term basis. These agreements had the effect of
increasing income from operations by approximately $37,050,000 for the year
ended December 31, 1997.
 
    The life reinsurance assumed agreement requires the reinsurer to withhold
funds in an amount equal to the reserves assumed.
 
    The Company also has executed a reinsurance agreement with an unaffiliated
company which provides reinsurance of certain individual life insurance
contracts on a modified coinsurance basis and under which all deficiency
reserves are ceded.
 
RESERVES
 
    In accordance with the life insurance laws and regulations under which the
Company operates it is obligated to carry on its books, as liabilities,
actuarially determined reserves to meet its obligations on its outstanding
contracts. Reserves are based on mortality tables in general use in the United
States and are computed to equal amounts that, with additions from premiums to
be received, and with interest on such reserves compounded annually at certain
assumed rates, will be sufficient to meet the Company's policy obligations at
their maturities or in the event of an insured's death. In the accompanying
Financial Statements these reserves are determined in accordance with statutory
regulations.
 
INVESTMENTS
 
    Of the Company's total assets of $15.9 billion at December 31, 1997, 71.7%
consisted of unitized and non-unitized separate account assets, 12.0% were
invested in bonds and similar securities, 4.3% in mortgages, 0.7% in
subsidiaries, 0.6% in real estate, and the remaining 10.7% in cash and other
assets.
 
COMPETITION
 
    The Company is engaged in a business that is highly competitive because of
the large number of stock and mutual life insurance companies and other entities
marketing insurance products. According to the most recent Best's Review,
Life-Health Edition, as of December 31, 1996 the Company ranked 38th among all
life insurance companies in the United States based upon total assets. Its
parent company, Sun Life
Assurance Company of Canada, ranked 19th. Best's Insurance Reports, Life-Health
Edition, 1997, assigned the Company and the parent company its highest
classification, A++, as of December 31, 1996. Standard & Poor's and Duff &
Phelps have assigned the Company and the parent company their highest ratings
for claims paying ability, AAA. Moody's Investor Service, Inc. has assigned the
Company an unsolicited rating of Aa1 for financial strength. These ratings
should not be considered as bearing on the investment performance of the Fund
shares held in the Sub-Accounts of the Variable Account. However, the ratings
are relevant to the Company's ability to meet its general corporate obligations
under the Contracts.
 
                                       47
<PAGE>
EMPLOYEES
 
    The Company and Sun Life Assurance Company of Canada have entered into a
Service Agreement which provides that the latter will furnish the Company, as
required, with personnel as well as certain services and facilities on a cost
reimbursement basis. As of December 31, 1997 the Company had 317 direct
employees who are employed at its Principal Executive Office in Wellesley Hills,
Massachusetts and its Retirement Products & Services Division in Boston,
Massachusetts.
 
PROPERTIES
 
    The Company occupies office space owned by it and leased to its parent, Sun
Life Assurance Company of Canada, and certain unrelated parties for lease terms
not exceeding five years.
 
                 THE COMPANY'S DIRECTORS AND EXECUTIVE OFFICERS
 
    The directors and principal officers of the Company are listed below,
together with information as to their ages, dates of election and principal
business occupations during the last five years (if other than their present
business occupations). Except as otherwise indicated, the directors and officers
of the Company who are associated with Sun Life Assurance Company of Canada
and/or its subsidiaries have been associated with Sun Life Assurance Company of
Canada for more than five years either in the position shown or in other
positions.
 
JOHN D. MCNEIL, 64, Chairman and Director (1982*)
150 King Street West
Toronto, Ontario, Canada M5H 1J9
 
    He is Chairman and a Director of Sun Life Assurance Company of Canada and
Sun Life Insurance and Annuity Company of New York; a Director of Massachusetts
Financial Services Company; Chairman and a Trustee of MFS/Sun Life Series Trust;
Chairman and a Member of the Boards of Managers of Money Market Variable
Account, High Yield Variable Account, Capital Appreciation Variable Account,
Government Securities Variable Account, World Governments Variable Account,
Total Return Variable Account and Managed Sectors Variable Account; and a
Director of Shell (Canada) Limited and Canadian Pacific, Ltd.
 
DONALD A. STEWART, 51, President and Director (1996*)
150 King Street West
Toronto, Ontario, Canada M5H 1J9
 
    He is President and a Director of Sun Life Assurance Company of Canada and
Sun Life Insurance and Annuity Company of New York; and a Director of
Massachusetts Financial Services Company, Massachusetts Casualty Insurance
Company and Sun Life Financial Services Limited.
 
DAVID D. HORN, 56, Director (1985*)
56 Pinckney Street
Boston, Massachuetts 02114
 
    He was formerly Senior Vice President and General Manager for the United
States of Sun Life Assurance Company of Canada, retiring in November, 1997. He
is a Director of Sun Life Insurance and Annuity Company of New York; a Trustee
of MFS/Sun Life Series Trust; and a Member of the Boards of Managers of Money
Market Variable Account, High Yield Variable Account, Capital Appreciation
Variable Account, Government Securities Variable Account, World Governments
Variable Account, Total Return Variable Account and Managed Sectors Variable
Account.
 
ANGUS A. MACNAUGHTON, 66, Director (1985*)
Metro Tower, Suite 1170,
950 Tower Lane
Foster City, California 94404
 
- - - ------------------------
* Year Elected Director
 
                                       48
<PAGE>
    He is President of Genstar Investment Corporation and a Director of Sun Life
Assurance Company of Canada, Sun Life Insurance and Annuity Company of New York,
Canadian Pacific, Ltd., Stelco, Inc. and Varian Associates, Inc.
 
JOHN S. LANE, 62, Director (1991*)
150 King Street West
Toronto, Ontario, Canada M5H 1J9
 
    He is Senior Vice President, Investments of Sun Life Assurance Company of
Canada; and a Director of Sun Life of Canada (U.S.) Distributors, Inc., Sun
Capital Advisers, Inc. and Sun Life Insurance and Annuity Company of New York.
 
RICHARD B. BAILEY, 71, Director (1983*)
500 Boylston Street
Boston, Massachusetts 02116
 
    He is a Director of Sun Life Insurance and Annuity Company of New York and a
Director/Trustee of certain Funds in the MFS Family of Funds.
 
M. COLYER CRUM, 65, Director (1986*)
104 West Cliff Street
Weston, MA 02193
 
    He is Professor Emeritus of the Harvard Business School; and a Director of
Sun Life Assurance Company of Canada, Sun Life Insurance and Annuity Company of
New York, Merrill Lynch Ready Assets Trust, Merrill Lynch Basic Value Fund,
Inc., Merrill Lynch Special Value Fund, Inc., Merrill Lynch Capital Fund, Inc.,
Merrill Lynch U.S.A. Government Reserves, Merrill Lynch Natural Resources Trust,
Merrill Lynch U.S. Treasury Money Fund, MuniVest California Insured Fund, Inc.,
MuniVest Florida Fund, Inc., MuniVest Michigan Insured Fund, Inc., MuniVest New
Jersey Fund, Inc., MuniVest New York Insured Fund, Inc., MuniYield Florida
Insured Fund, MuniYield Insured Fund II, Inc., MuniYield Michigan Insured Fund,
Inc., MuniYield New Jersey Insured Fund, Inc., MuniYield New York Insured Fund
III, Inc. and MuniYield Pennsylvania Fund. Prior to July, 1996, he was a
Professor at the Harvard Business School.
 
S. CAESAR RABOY, 61, Senior Vice President and Deputy General Manager and
Director (1996*)
0 One Sun Life Executive Park
Wellesley Hills, Massachusetts 02181
 
    He is Senior Vice President and Deputy General Manager for the United States
of Sun Life Assurance Company of Canada; Senior Vice President and a Director of
Sun Life Insurance and Annuity Company of New York; and Vice President and a
Director of Sun Life Financial Services Limited and Sun Life of Canada (U.S.)
Distributors, Inc.
 
ROBERT A. BONNER, 53, Vice President, Pensions (1986)
One Sun Life Executive Park
Wellesley Hills, Massachusetts 02181
 
    He is Vice President, Individual Insurance for the United States of Sun Life
Assurance Company of Canada.
 
C. JAMES PRIEUR, 46, Senior Vice President, General Manager and Director (1998*)
One Sun Life Executive Park
Wellesley Hills, Massachusetts 02181
 
    He is Senior Vice President and General Manager for the United States of Sun
Life Assurance Company of Canada; Vice President, Investments of Sun Life of
Canada (U.S.) Distributors, Inc., a Massachusetts Casualty Insurance Company and
Sun Life Insurance and Annuity Company of New York; and a Director of Sun
Capital Advisers, Inc., New London Trust, F.S.B.; Sun Canada Financial Co., and
Sun Life of Canada (U.S.) Holdings, Inc.
 
- - - ------------------------
* Year Elected Director
 
                                       49
<PAGE>
L. BROCK THOMSON, 56, Vice President and Treasurer (1974)
One Sun Life Executive Park
Wellesley Hills, Massachusetts 02181
 
    He is Vice President, Portfolio Management for the United States of Sun Life
Assurance Company of Canada; Vice President and Treasurer of Sun Life of Canada
(U.S.) Distributors, Inc., Sun Capital Advisers, Inc., Sun Benefit Services
Company, Inc. and Sun Life Insurance and Annuity Company of New York; and
Assistant Treasurer of Massachusetts Casualty Insurance Company.
 
ROBERT P. VROLYK, 44, Vice President and Actuary (1986)
One Sun Life Executive Park
Wellesley Hills, Massachusetts 02181
 
    He is Vice President, Finance for the United States of Sun Life Assurance
Company of Canada; Vice President, Controller and Actuary of Sun Life Insurance
and Annuity Company of New York; a Director of Massachusetts Casualty Insurance
Company and Sun Life of Canada (U.S.) Holdings, Inc.; and Vice President and a
Director of Sun Canada Financial Co.
 
MARGARET SEARS MEAD, 47, Assistant Vice President and Secretary (1996)
One Sun Life Executive Park
Wellesley Hills, Massachusetts 02181
 
    She is Assistant Vice President and Counsel for the United States of Sun
Life Assurance Company of Canada; and Assistant Vice President and Secretary of
Sun Life Insurance and Annuity Company of New York and Secretary of Sun Life of
Canada (U.S.) Holdings, Inc.
 
    The directors, officers and employees of the Company are covered under a
commercial blanket bond and a liability policy. The directors, officers and
employees of Massachusetts Financial Services Company and Clarendon Insurance
Agency, Inc. are covered under a fidelity bond and errors and omissions policy.
 
EXECUTIVE COMPENSATION
 
    All of the executive officers of the Company also serve as officers of Sun
Life Assurance Company of Canada and receive no compensation directly from the
Company. Allocations have been made as to such officers' time devoted to duties
as executive officers of the Company and its subsidiaries. The allocated cash
compensation of all executive officers of the Company as a group for services
rendered in all capacities to the Company and its subsidiaries during 1997
totalled $824,000.
 
    Directors of the Company who are also officers of Sun Life Assurance Company
of Canada or its affiliates receive no compensation in addition to their
compensation as officers of Sun Life Assurance Company of Canada or its
affiliates. Messrs. Bailey, Crum and MacNaughton receive compensation in the
amount of $5,000 per year, plus $800 for each meeting attended, plus expenses.
 
    No shares of the Company are owned by any executive officer or director. The
Company is a wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings,
Inc., One Sun Life Executive Park, Wellesley Hills, Massachusetts 02181, which
is in turn a wholly-owned subsidiary of Sun Life Assurance Company of
Canada-U.S. Operations Holdings, Inc., a wholly-owned subsidiary of Sun Life
Assurance Company of Canada.
 
                                STATE REGULATION
 
    The Company is subject to the laws of the State of Delaware governing life
insurance companies and to regulation by the Commissioner of Insurance of
Delaware. An annual statement is filed with the Commissioner of Insurance on or
before March 1st in each year relating to the operations of the Company for the
preceding year and its financial condition on December 31st of such year. Its
books and records are subject to review or examination by the Commissioner or
his agents at any time and a full examination of its operations is conducted at
periodic intervals.
 
    The Company is also subject to the insurance laws and regulations of the
other states and jurisdictions in which it is licensed to operate. The laws of
the various jurisdictions establish supervisory agencies with broad
administrative powers with respect to licensing to transact business, overseeing
trade practices,
 
                                       50
<PAGE>
licensing agents, approving policy forms, establishing reserve requirements,
fixing maximum interest rates on life insurance policy loans and minimum rates
for accumulation of surrender values, prescribing the form and content of
required financial statements and regulating the type and amounts of investments
permitted. Each insurance company is required to file detailed annual reports
with supervisory agencies in each of the jurisdictions in which it does business
and its operations and accounts are subject to examination by such agencies at
regular intervals.
 
    In addition, many states regulate affiliated groups of insurers, such as the
Company, its parent and its affiliates, under insurance holding company
legislation. Under such laws, inter-company transfers of assets and dividend
payments from insurance subsidiaries may be subject to prior notice or approval,
depending on the size of such transfers and payments in relation to the
financial positions of the companies involved.
 
    Under insurance guaranty fund laws in most states, insurers doing business
therein can be assessed (up to prescribed limits) for policyholder losses
incurred by insolvent companies. The amount of any future assessments of the
Company under these laws cannot be reasonably estimated. However, most of these
laws do provide that an assessment may be excused or deferred if it would
threaten an insurer's own financial strength and many permit the deduction of
all or a portion of any such assessment from any future premium or similar taxes
payable.
 
    Although the federal government generally does not directly regulate the
business of insurance, federal initiatives often have an impact on the business
in a variety of ways. Current and proposed federal measures which may
significantly affect the insurance business include employee benefit regulation,
removal of barriers preventing banks from engaging in the insurance business,
tax law changes affecting the taxation of insurance companies, the tax treatment
of insurance products and its impact on the relative desirability of various
personal investment vehicles.
 
                               LEGAL PROCEEDINGS
 
    There are no pending legal proceedings affecting the Variable Account. The
Company and its subsidiaries are engaged in various kinds of routine litigation
which, in management's judgment, is not of material importance to their
respective total assets or material with respect to the Variable Account.
 
                                 LEGAL MATTERS
 
    The legality of the Contracts and the validity of the form of the Contracts
under Delaware law have been passed upon for the Company by Margaret Sears Mead,
Assistant Vice President and Secretary of the Company. Covington & Burling,
Washington, D.C., has advised the Company on certain legal matters concerning
federal securities laws applicable to the issue and sale of the Contracts and
federal income tax laws applicable to the Contracts.
 
                                  ACCOUNTANTS
 
    The statutory financial statements of the Company as of December 31, 1997
and 1996 and for each of the three years in the period ended December 31, 1997,
included in this Prospectus and the statutory financial statements of the
Company as of December 31, 1996 and 1995 and for each of the three years in the
period ended December 31, 1996 incorporated by reference in this Prospectus have
been audited by Deloitte & Touche LLP, independent auditors, as stated in their
reports, which are included and incorporated by reference herein, and have been
so included and incorporated in reliance upon the report of such firm given upon
their authority as experts in accounting and auditing.
 
                            REGISTRATION STATEMENTS
 
    Registration statements have been filed with the Securities and Exchange
Commission, Washington, D.C., under the Securities Act of 1933 as amended, with
respect to the Contracts offered by this Prospectus. This Prospectus does not
contain all the information set forth in the registration statements and the
exhibits filed as part of the registration statements, to all of which reference
is hereby made for further information
 
                                       51
<PAGE>
concerning the Variable Account, the Fixed Account, the Company, the Funds and
the Contracts. Statements found in this Prospectus as to the terms of the
Contracts and other legal instruments are summaries, and reference is made to
such instruments as filed.
 
                              FINANCIAL STATEMENTS
 
    The financial statements of the Company which are included in this
Prospectus should be considered only as bearing on the ability of the Company to
meet its obligations with respect to amounts allocated to the Fixed Account and
with respect to the death benefit and the Company's assumption of the mortality
and expense risks. They should not be considered as bearing on the investment
performance of the Fund shares held in the Sub-Accounts of the Variable Account.
The Variable Account value of the interests of Owners, Participants, Annuitants,
Payees and Beneficiaries, as applicable, under the Contracts is affected
primarily by the investment results of the Funds. No financial statements are
included for the Variable Account, because, as of the date of this Prospectus,
the Variable Account had not commenced operations with respect to the
Sub-Accounts, and consequently had no assets or liabilities attributable to the
Contracts.
 
                              -------------------
 
                                       52
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
STATUTORY STATEMENTS OF ADMITTED ASSETS, LIABILITIES AND
CAPITAL STOCK AND SURPLUS
DECEMBER 31, 1997 AND 1996 (IN 000'S)
 
<TABLE>
<CAPTION>
                                                                                   1997            1996
                                                                              --------------  --------------
<S>                                                                           <C>             <C>
ADMITTED ASSETS
    Bonds                                                                     $    1,910,699  $    2,170,103
    Common stocks                                                                    117,229         144,043
    Mortgage loans on real estate                                                    684,035         938,932
    Properties acquired in satisfaction of debt                                       22,475          23,391
    Investment real estate                                                            78,426          76,995
    Policy loans                                                                      40,348          40,554
    Cash and short-term investments                                                  544,418         148,059
    Other invested assets                                                             55,716          51,378
    Premiums and annuity considerations due and uncollected                            9,203          11,282
    Investment income due and accrued                                                 39,279          68,191
    Receivable from parent, subsidiaries and affiliates                               28,825          40,829
    Funds withheld on reinsurance assumed                                            982,653         878,798
    Other assets                                                                       1,841           1,343
                                                                              --------------  --------------
    General account assets                                                         4,515,147       4,593,898
    Separate account assets
      Unitized                                                                     9,068,021       6,919,219
      Non-unitized                                                                 2,343,877       2,108,835
                                                                              --------------  --------------
    Total Admitted Assets                                                     $   15,927,045  $   13,621,952
                                                                              --------------  --------------
                                                                              --------------  --------------
LIABILITIES
    Aggregate reserve for life policies and contracts                         $    2,188,243  $    2,099,980
    Supplementary contracts                                                            2,247           2,205
    Policy and contract claims                                                         2,460           2,108
    Policyholders' dividends and coupons payable                                      32,500          27,500
    Liability for premium and other deposit funds                                  1,450,705       1,898,309
    Surrender values on cancelled policies                                               215              72
    Interest maintenance reserve                                                      33,830          28,675
    Commissions to agents due or accrued                                               2,826           3,245
    General expenses due or accrued                                                    7,202           4,654
    Transfers from Separate Accounts due or accrued                                 (284,078)       (232,743)
    Taxes, licenses and fees accrued, excluding federal income taxes                     105             342
    Federal income taxes due or accrued                                               58,073          49,479
    Unearned investment income                                                            34              19
    Amounts withheld or retained by company as agent or trustee                           47              27
    Remittances and items not allocated                                                1,363           1,359
    Borrowed money                                                                   110,142          58,000
    Asset valuation reserve                                                           47,605          53,911
    Payable for securities                                                            27,104          22,177
    Other liabilities                                                                  1,959           7,561
                                                                              --------------  --------------
    General account liabilities                                                    3,682,582       4,026,880
    Separate account liabilities
      Unitized                                                                     9,067,891       6,919,094
      Non-unitized                                                                 2,343,877       2,108,835
                                                                              --------------  --------------
    Total liabilities                                                             15,094,350      13,054,809
                                                                              --------------  --------------
CAPITAL STOCK AND SURPLUS
    Capital stock par value $1,000; Authorized, 10,000 shares;
       issued and outstanding, 5,900 shares                                            5,900           5,900
                                                                              --------------  --------------
    Surplus notes                                                                    565,000         315,000
    Gross paid in and contributed surplus                                            199,355         199,355
    Unassigned funds                                                                  62,440          46,888
                                                                              --------------  --------------
    Surplus                                                                          826,795         561,243
                                                                              --------------  --------------
    Total capital stock and surplus                                                  832,695         567,143
                                                                              --------------  --------------
    Total Liabilities, Capital Stock and Surplus                              $   15,927,045  $   13,621,952
                                                                              --------------  --------------
                                                                              --------------  --------------
</TABLE>
 
                  SEE NOTES TO STATUTORY FINANCIAL STATEMENTS.
 
                                       53
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
STATUTORY STATEMENTS OF OPERATIONS
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995 (IN 000'S)
 
<TABLE>
<CAPTION>
                                              1997        1996        1995
                                           ----------  ----------  ----------
 <S>                                       <C>         <C>         <C>
 INCOME:
     Premiums and annuity considerations   $  270,700  $  282,466  $  279,407
     Deposit-type funds                     2,155,298   1,775,230   1,545,542
     Considerations for supplementary
      contracts without life
      contingencies and dividend
      accumulations                             1,615       2,340       1,088
     Net investment income                    270,249     303,753     312,872
     Amortization of interest maintenance
      reserve                                   1,166       1,557       1,025
     Net gain from operations from
      Separate Accounts                             5          --          --
     Other income                              86,123      71,903      57,864
                                           ----------  ----------  ----------
     Total                                  2,785,156   2,437,249   2,197,798
                                           ----------  ----------  ----------
 BENEFITS AND EXPENSES:
     Death benefits                            17,284      12,394      15,317
     Annuity benefits                         148,135     146,654     140,497
     Surrender benefits and other fund
      withdrawals                           1,854,004   1,507,263   1,074,396
     Interest on policy or contract funds         699       2,205         739
     Payments on supplementary contracts
      without life contingencies and of
      dividend accumulations                    1,687       2,120       1,888
     Increase in aggregate reserves for
      life and accident and health
      policies and contracts                  127,278     162,678     171,975
     Increase (decrease) in liability for
      premium and other deposit funds        (447,603)   (392,348)     13,553
     Increase (decrease) in reserve for
      supplementary contracts without
      life contingencies and for dividend
      and coupon accumulations                     42         327        (663)
                                           ----------  ----------  ----------
     Total                                  1,701,526   1,441,293   1,417,702
     Commissions on premiums and annuity
      considerations (direct business
      only)                                   132,700     109,894      88,037
     Commissions and expense allowances
      on reinsurance assumed                   17,951      18,910      22,012
     General insurance expenses                47,102      37,206      34,580
     Insurance taxes, licenses and fees,
      excluding federal income taxes            7,790       8,431       7,685
     Increase (decrease) in loading on
      and cost of collection in excess of
      loading on deferred and uncollected
      premiums                                    523         901      (1,377)
     Net transfers to separate accounts       734,373     678,663     551,784
                                           ----------  ----------  ----------
     Total                                  2,641,965   2,295,298   2,120,423
                                           ----------  ----------  ----------
     Net gain from operations before
      dividends to policyholders and
      federal income taxes                    143,191     141,951      77,375
     Dividends to policyholders                33,316      29,189      25,722
                                           ----------  ----------  ----------
     Net gain from operations after
      dividends to policyholders and
      before federal income taxes             109,875     112,762      51,653
     Federal income tax expense (benefit)
      (excluding tax on capital gains)         10,742      (2,702)     17,807
                                           ----------  ----------  ----------
     Net gain from operations after
      dividends to policyholders and
      federal income taxes and before
      realized capital gains                   99,133     115,464      33,846
     Net realized capital gains less
      capital gains tax and transfers to
      the interest maintenance reserve         30,109       7,560       2,069
                                           ----------  ----------  ----------
 NET INCOME                                $  129,242  $  123,024  $   35,915
                                           ----------  ----------  ----------
                                           ----------  ----------  ----------
</TABLE>
 
                  SEE NOTES TO STATUTORY FINANCIAL STATEMENTS.
 
                                       54
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
 
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
STATUTORY STATEMENTS OF CHANGES IN CAPITAL STOCK AND SURPLUS
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995 (IN 000'S)
 
<TABLE>
<CAPTION>
                                                               1997        1996        1995
                                                            ----------  ----------  ----------
<S>                                                         <C>         <C>         <C>
Capital and surplus, beginning of year                      $  567,143  $  792,452  $  455,489
                                                            ----------  ----------  ----------
Net income                                                     129,242     123,024      35,915
Change in net unrealized capital gains                           1,153      (1,715)      2,009
Change in non-admitted assets and related items                   (463)         67      (2,270)
Change in reserve on account of change in valuation basis       39,016          --          --
Change in asset valuation reserve                                6,306     (11,812)    (13,690)
Other changes in surplus in Separate Accounts Statement             --         100      (4,038)
Change in surplus notes                                        250,000    (335,000)    315,000
Dividends to stockholder                                      (159,722)         --          --
Miscellaneous gains in surplus                                      20          27       4,037
                                                            ----------  ----------  ----------
Net change in capital and surplus for the year                 265,552    (225,309)    336,963
                                                            ----------  ----------  ----------
Capital and surplus, end of year                            $  832,695  $  567,143  $  792,452
                                                            ----------  ----------  ----------
                                                            ----------  ----------  ----------
</TABLE>
 
                  SEE NOTES TO STATUTORY FINANCIAL STATEMENTS.
 
                                       55
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
STATUTORY STATEMENTS OF CASH FLOW
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995 (IN 000'S)
 
<TABLE>
<CAPTION>
                                               1997         1996         1995
                                            -----------  -----------  -----------
 <S>                                        <C>          <C>          <C>
 Cash Provided
   Premiums, annuity considerations and
     deposit funds received                 $ 2,427,554  $ 2,059,577  $ 1,826,456
   Considerations for supplementary
     contracts and dividend accumulations
     received                                     1,615        2,340        1,088
   Net investment income received               323,199      324,914      374,398
   Other income received                         81,701       88,295       25,348
                                            -----------  -----------  -----------
 Total receipts                               2,834,069    2,475,126    2,227,290
                                            -----------  -----------  -----------
   Benefits paid (other than dividends)       2,020,615    1,671,483    1,231,936
   Insurance expenses and taxes paid
     (other than federal income and
     capital gains taxes)                       203,650      172,015      150,463
   Net cash transferred to Separate
     Accounts                                   785,708      755,605      568,188
   Dividends paid to policyholders               28,316       22,689       17,722
   Federal income tax (recoveries)
     payments (excluding tax on capital
     gains)                                       1,397      (15,363)     (20,655)
   Other--net                                       699        2,205          739
                                            -----------  -----------  -----------
 Total payments                               3,040,385    2,608,634    1,948,393
                                            -----------  -----------  -----------
 Net cash from operations                      (206,316)    (133,508)     278,897
                                            -----------  -----------  -----------
   Proceeds from long-term investments
     sold, matured or repaid (after
     deducting taxes on capital gains of
     $750,449, $1,554,873 and $8,610,951)     1,343,803    1,768,147    1,658,655
   Issuance of surplus notes                    250,000     (335,000)     315,000
   Other cash provided                          117,297      147,956      419,446
                                            -----------  -----------  -----------
 Total cash provided                          1,711,100    1,581,103    2,393,101
                                            -----------  -----------  -----------
 Cash Applied
   Cost of long-term investments acquired       773,721    1,318,880    1,749,714
   Other cash applied                           334,704      177,982      796,207
                                            -----------  -----------  -----------
 Total cash applied                           1,108,425    1,496,862    2,545,921
                                            -----------  -----------  -----------
 Net change in cash and short-term
   investments                                  396,359      (49,267)     126,077
 Cash and short term investments
 Beginning of year                              148,059      197,326       71,249
                                            -----------  -----------  -----------
 End of year                                $   544,418  $   148,059  $   197,326
                                            -----------  -----------  -----------
                                            -----------  -----------  -----------
</TABLE>
 
                  SEE NOTES TO STATUTORY FINANCIAL STATEMENTS.
 
                                       56
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
1.  DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:
 
GENERAL
 
Sun Life Assurance Company of Canada (U.S.) (the "Company") is incorporated as a
life insurance company and is currently engaged in the sale of individual
variable life insurance, individual fixed and variable annuities, group fixed
and variable annuities and group pension contracts. The Company also underwrites
a block of individual life insurance business through a reinsurance contract
with an affiliate, Sun Life Assurance Company of Canada ("SLOC"). SLOC is a
mutual life insurance company.
 
Effective May 1, 1997, the Company became a wholly-owned subsidiary of the newly
established Sun Life of Canada (U.S.) Holdings, Inc. ("Life Holdco"). On
December 18, 1997, Life Holdco became a wholly-owned subsidiary of the Sun Life
Assurance Company of Canada - U.S. Operations Holdings, Inc. ("US Holdco"). US
Holdco is a wholly-owned subsidiary of SLOC. Prior to December 18, 1997 Life
Holdco was a direct wholly-owned subsidiary of SLOC.
 
The Company, which is domiciled in the State of Delaware, prepares its financial
statements in accordance with statutory accounting practices prescribed or
permitted by the State of Delaware Insurance Department. Prescribed accounting
practices include practices described in a variety of publications of the
National Association of Insurance Commissioners ("NAIC"), as well as state laws,
regulations and general administrative rules. Permitted accounting practices
encompass all accounting practices not so prescribed. The permitted accounting
practices adopted by the Company are not material to the financial statements.
Prior to 1996, statutory accounting practices were recognized by the insurance
industry and the accounting profession as generally accepted accounting
principles for mutual life insurance companies and stock life insurance
companies wholly-owned by mutual life insurance companies. In April 1993, the
Financial Accounting Standards Board ("FASB") issued an interpretation (the
"Interpretation"), that became effective in 1996, which changed the previous
practice of mutual life insurance companies (and stock life insurance companies
that are wholly-owned subsidiaries of mutual life insurance companies) with
respect to utilizing statutory basis financial statements for general purposes,
in that it will no longer allow such financial statements to be described as
having been prepared in conformity with generally accepted accounting principles
("GAAP"). Consequently, these financial statements prepared in conformity with
statutory accounting practices as described above, vary from and are not
intended to present the Company's financial position, results of operations or
cash flow in conformity with generally accepted accounting principles. (See Note
19 for further discussion relative to the Company's basis of financial statement
presentation.) The effects on the financial statements of the variances between
the statutory basis of accounting and GAAP, although not reasonably
determinable, are presumed to be material.
 
INVESTED ASSETS AND RELATED RESERVES
 
Bonds are carried at cost adjusted for amortization of premium or accrual of
discount. Investments in non-insurance subsidiaries are carried on the equity
basis. Investments in insurance subsidiaries are carried at their statutory
surplus values. Mortgage loans acquired at a premium or discount are carried at
amortized values and other mortgage loans are carried at the amounts of the
unpaid balances. Real estate investments are carried at the lower of cost
adjusted for accumulated depreciation or appraised value, less encumbrances.
Short-term investments are carried at amortized cost, which approximates fair
value. Depreciation of buildings and improvements is calculated using the
straight-line method over the estimated useful life of the property, generally
40 to 50 years.
 
                                       57
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
1.  DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING
POLICIES (CONTINUED):
POLICY AND CONTRACT RESERVES
 
The reserves for life insurance and annuity contracts, developed by accepted
actuarial methods, have been established and maintained on the basis of
published mortality tables using assumed interest rates and valuation methods
that will provide reserves at least as great as those required by law and
contract provisions.
 
INCOME AND EXPENSES
 
For life and annuity contracts, premiums are recognized as revenues over the
premium paying period, whereas commissions and other costs applicable to the
acquisition of new business are charged to operations as incurred.
 
SEPARATE ACCOUNTS
 
The Company has established unitized separate accounts applicable to various
classes of contracts providing for variable benefits. Contracts for which funds
are invested in separate accounts include variable life insurance and individual
and group qualified and non-qualified variable annuity contracts.
 
Assets and liabilities of the separate accounts, representing net deposits and
accumulated net investment earnings less fees, held primarily for the benefit of
contract holders, are shown as separate captions in the financial statements.
Assets held in the separate accounts are carried at market value.
 
The Company has also established a non-unitized separate account for amounts
allocated to the fixed portion of certain combination fixed/variable deferred
annuity contracts. The assets of this account are available to fund general
account liabilities and general account assets are available to fund liabilities
of this account.
 
Gains (losses) from mortality experience and investment experience of the
separate accounts, not applicable to contract owners, are transferred to (from)
the general account. Accumulated gains (losses) that have not been transferred
are recorded as a payable (receivable) to (from) the general account. Amounts
payable to the general account of the Company were $284,078,000 in 1997 and
$232,743,000 in 1996.
 
CHANGES IN ACCOUNTING PRINCIPLES AND REPORTING
 
Prior to 1996, dividends paid to the Company by its subsidiaries and the
undistributed gains (losses) of those subsidiaries were included in net income
of the Company. For Annual Statement reporting, dividends were (and continue to
be) reported in net income while undistributed gains (losses) are reported
directly to surplus (as a separate component of unassigned surplus). As a
result, net income as reported in these financial statements is $2.5 million
less than net income reported in the Annual Statement in 1995. Effective for
1996, the Company changed its method of accounting for investments in
subsidiaries to conform with a preferable prescribed statutory accounting
practices used in the preparation of its Annual Statement. As a result of the
change, $5.7 million in undistributed losses of subsidiaries are reported
directly as a separate component of unassigned surplus rather than being
included in net income for the year ended December 31, 1996. The amounts as
reported in prior years have not been restated.
 
As described more fully in Note 10, during 1997 the Company changed certain
assumptions used in determining actuarial reserves.
 
                                       58
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
1.  DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING
POLICIES (CONTINUED):
OTHER
 
Preparation of the financial statements requires management to make estimates
and assumptions that affect reported amounts of assets, liabilities, revenues
and expenses. Actual results could differ from those estimates.
 
Certain prior year amounts have been reclassified to conform to amounts as
presented in the current year.
 
2.  INVESTMENTS IN SUBSIDIARIES:
The Company owns all of the outstanding shares of Sun Life Insurance and Annuity
Company of New York ("Sun Life (N.Y.)"), Massachusetts Casualty Insurance
Company ("MCIC"), Sun Life of Canada (U.S.) Distributors, Inc. (formerly Sun
Investment Services Company) ("Sundisco"), New London Trust, F.S.B. ("NLT"), Sun
Life Financial Services Limited, ("SLFSL"), Sun Benefit Services Company, Inc.
("Sunbesco"), Sun Capital Advisers, Inc. ("Sun Capital"), and Sun Life Finance
Corporation ("Sunfinco").
 
On October 30, 1997, the Company established a wholly-owned special purpose
corporation, Sun Life of Canada (U.S.) SPE 97-1, Inc. (SPE 97-1). SPE 97-1 was
organized for the purpose of engaging in activities incidental to securitizing
mortgage loans.
 
Prior to December 24, 1997, the Company owned 93.6% of the outstanding shares of
Massachusetts Financial Services Company ("MFS") . On December 24, 1997, the
Company transferred all of its shares of MFS to Life Holdco in the form of a
dividend valued at $159,722,000. As a result of this transaction the Company
realized a gain of $21,195,000 of undistributed earnings.
 
On December 31, 1997, the Company purchased all of the outstanding shares of
Clarendon Insurance Agency, Inc. ("Clarendon") from MFS.
 
Sun Life (N.Y.) is engaged in the sale of individual fixed and variable annuity
contracts and group life and disability insurance contracts in the State of New
York. MCIC is a life insurance company which issues only individual disability
income policies. Sundisco is a registered investment adviser and broker-dealer.
NLT is a federally chartered savings bank. SLFSL serves as the marketing
administrator for the distribution of the offshore products of SLOC, an
affiliate. Sun Capital is a registered investment adviser. Sunfinco and Sunbesco
are currently inactive. Clarendon is a registered broker-dealer that acts as the
general distributor of certain annuity and life insurance contracts issued by
the Company and its affiliates.
 
MFS, a registered investment adviser, serves as investment adviser to the mutual
funds in the MFS family of funds as well as certain mutual funds and separate
accounts established by the Company. The MFS Asset Management Group provides
investment advice to substantial private clients.
 
On December 23, 1997, the Company issued a $110,000,000 note to US Holdco. at an
interest rate of 5.80%, which is scheduled for repayment on March 1, 1998, and
is included in borrowed money. A $110,000,000 note was also issued by MFS on
December 23, 1997 to the Company at an interest rate of 5.85% due on March 1,
1998 and is included in cash and short-term investments.
 
On December 31, 1996, the Company issued a $58,000,000 note to SLOC which was
repaid on February 10, 1997 at an interest rate of 5.70%. Also on December 31,
1996, the Company was issued a $58,000,000 note by MFS at an interest rate of
5.76%. This note was repaid to the Company on February 10, 1997. On December 31,
1997 and 1996 the Company had an additional $20,000,000 in notes issued by MFS,
scheduled to mature in 2000.
 
                                       59
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
2.  INVESTMENTS IN SUBSIDIARIES (CONTINUED):
During 1997, 1996, and 1995, the Company contributed capital in the following
amounts to its subsidiaries:
 
<TABLE>
<CAPTION>
                                                                          1997            1996           1995
                                                                     --------------  --------------  ------------
<S>                                                                  <C>             <C>             <C>
MCIC                                                                 $    2,000,000  $   10,000,000  $  6,000,000
SLFSL                                                                     1,000,000       1,500,000            --
SPE 97-1                                                                 20,377,000              --            --
</TABLE>
 
Summarized combined financial information of the Company's subsidiaries as of
December 31, 1997, 1996 and 1995 and for the years then ended, follows:
 
<TABLE>
<CAPTION>
                                                                                    DECEMBER 31,
                                                                     -------------------------------------------
                                                                         1997           1996           1995
                                                                     -------------  -------------  -------------
                                                                                     (IN 000'S)
<S>                                                                  <C>            <C>            <C>
Intangible assets                                                    $           0  $       9,646  $      12,174
Other assets                                                             1,190,951      1,376,014      1,233,372
Liabilities                                                             (1,073,966)    (1,241,617)    (1,107,264)
                                                                     -------------  -------------  -------------
Total net assets                                                     $     116,985  $     144,043  $     138,282
                                                                     -------------  -------------  -------------
                                                                     -------------  -------------  -------------
Total revenues                                                       $     750,364  $     717,280  $     570,794
Operating expenses                                                        (646,896)      (624,199)      (504,070)
Income tax expense                                                         (43,987)       (42,820)       (31,193)
                                                                     -------------  -------------  -------------
Net income                                                           $      59,481  $      50,261  $      35,531
                                                                     -------------  -------------  -------------
                                                                     -------------  -------------  -------------
</TABLE>
 
3.  BONDS:
Investments in debt securities are as follows:
 
<TABLE>
<CAPTION>
                                                                             DECEMBER 31, 1997
                                                            ----------------------------------------------------
                                                                             GROSS        GROSS      ESTIMATED
                                                             AMORTIZED    UNREALIZED   UNREALIZED       FAIR
                                                                COST         GAINS      (LOSSES)       VALUE
                                                            ------------  -----------  -----------  ------------
 
<S>                                                         <C>           <C>          <C>          <C>
                                                                                 (IN 000'S)
Long-term bonds:
    United States government and government agencies and
     authorities                                            $    126,923   $   5,529    $      --   $    132,452
    States, provinces and political subdivisions                  22,361       2,095           --         24,456
    Public utilities                                             398,939      35,338          (91)       434,186
    Transportation                                               214,130      22,000         (390)       235,740
    Finance                                                      157,891       5,885         (120)       163,656
    All other corporate bonds                                    990,455      52,678       (5,456)     1,037,677
                                                            ------------  -----------  -----------  ------------
        Total long-term bonds                                  1,910,699     123,525       (6,057)     2,028,167
                                                            ------------  -----------  -----------  ------------
Short-term bonds:
    U.S. Treasury Bills, bankers acceptances and
     commercial paper                                            431,032          --           --        431,032
    Affiliates                                                   110,000          --           --        110,000
                                                            ------------  -----------  -----------  ------------
        Total short-term bonds                                   541,032          --           --        541,032
Total bonds                                                 $  2,451,731   $ 123,525    $  (6,057)  $  2,569,199
                                                            ------------  -----------  -----------  ------------
                                                            ------------  -----------  -----------  ------------
</TABLE>
 
                                       60
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
3.  BONDS (CONTINUED):
 
<TABLE>
<CAPTION>
                                                                             DECEMBER 31, 1996
                                                            ----------------------------------------------------
                                                                             GROSS        GROSS      ESTIMATED
                                                             AMORTIZED    UNREALIZED   UNREALIZED       FAIR
                                                                COST         GAINS      (LOSSES)       VALUE
                                                            ------------  -----------  -----------  ------------
 
<S>                                                         <C>           <C>          <C>          <C>
                                                                                 (IN 000'S)
Long-term bonds:
    United States government and government agencies and
     authorities                                            $    267,756   $  12,272    $  (8,927)  $    271,101
    States, provinces and political subdivisions                   2,253          20           --          2,273
    Foreign governments                                           18,812       1,351           --         20,163
    Public utilities                                             415,641      24,728       (1,223)       439,146
    Transportation                                               167,937      14,107       (2,243)       179,801
    Finance                                                      290,024       7,914         (472)       297,466
    All other corporate bonds                                  1,007,680      42,338      (14,496)     1,035,522
                                                            ------------  -----------  -----------  ------------
        Total long-term bonds                                  2,170,103     102,730      (27,361)     2,245,472
                                                            ------------  -----------  -----------  ------------
Short-term bonds:
    U.S. Treasury Bills, bankers acceptances and
     commercial paper                                             88,754          --           --         88,754
    Affiliates                                                    58,000          --           --         58,000
                                                            ------------  -----------  -----------  ------------
        Total short-term bonds                                   146,754          --           --        146,754
                                                            ------------  -----------  -----------  ------------
Total bonds                                                 $  2,316,857   $ 102,730    $ (27,361)  $  2,392,226
                                                            ------------  -----------  -----------  ------------
                                                            ------------  -----------  -----------  ------------
</TABLE>
 
The amortized cost and estimated fair value of bonds at December 31, 1997 are
shown below by contractual maturity. Expected maturities will differ from
contractual maturities because borrowers may have the right to call or prepay
obligations with or without call and/or prepayment penalties.
 
<TABLE>
<CAPTION>
                                                                                           DECEMBER 31, 1997
                                                                                       --------------------------
                                                                                        AMORTIZED     ESTIMATED
                                                                                           COST       FAIR VALUE
                                                                                       ------------  ------------
<S>                                                                                    <C>           <C>
                                                                                               (IN 000'S)
Maturities:
    Due in one year or less                                                            $    699,548  $    700,280
    Due after one year through five years                                                   533,901       541,382
    Due after five years through ten years                                                  270,607       286,651
    Due after ten years                                                                     735,624       821,002
                                                                                       ------------  ------------
                                                                                          2,239,680     2,349,315
    Mortgage-backed securities                                                              212,051       219,884
                                                                                       ------------  ------------
Total bonds                                                                            $  2,451,731  $  2,569,199
                                                                                       ------------  ------------
                                                                                       ------------  ------------
</TABLE>
 
Proceeds from sales and maturities of investments in debt securities during
1997, 1996, and 1995 were $980,264,000, $1,554,016,000, and $1,510,553,000,
gross gains were $10,732,000, $16,975,000, and $24,757,000 and gross losses were
$2,446,000, $10,885,000, and $5,742,000, respectively.
 
Bonds included above with an amortized cost of approximately $2,578,000 and
$2,060,000 at December 31, 1997 and 1996, respectively, were on deposit with
governmental authorities as required by law.
 
4.  SECURITIES LENDING:
The Company has a securities lending program operated on its behalf by the
Company's primary custodian, Chemical Bank of New York. The custodian has
indemnified the Company against losses arising from this
 
                                       61
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
4.  SECURITIES LENDING (CONTINUED):
program. The total par value of securities out on loan was $0 and $51,537,000 at
December 31, 1997 and 1996 respectively. Income resulting from this program was
$200,000, $137,000 and $2,000 for the years ended December 31, 1997, 1996 and
1995, respectively.
 
5.  MORTGAGE LOANS:
The Company invests in commercial first mortgage loans throughout the United
States. The Company monitors the condition of the mortgage loans in its
portfolio. In those cases where mortgages have been restructured, appropriate
allowances for losses have been made. In those cases where, in management's
judgment, the mortgage loans' values are impaired, appropriate losses are
recorded.
 
The following table shows the geographical distribution of the mortgage loan
portfolio.
 
<TABLE>
<CAPTION>
                                                                                                DECEMBER 31,
                                                                                           ----------------------
                                                                                              1997        1996
                                                                                           ----------  ----------
                                                                                                 (IN 000'S)
<S>                                                                                        <C>         <C>
California                                                                                 $  119,122  $  154,272
Massachusetts                                                                                  58,981      79,929
Michigan                                                                                       42,912      57,119
New York                                                                                       45,696      67,742
Ohio                                                                                           51,862      75,405
Pennsylvania                                                                                   97,949     115,584
Washington                                                                                     54,948      75,819
All other                                                                                     212,565     313,062
                                                                                           ----------  ----------
                                                                                           $  684,035  $  938,932
                                                                                           ----------  ----------
                                                                                           ----------  ----------
</TABLE>
 
The Company has restructured mortgage loans totaling $26,284,000 and $29,261,000
at December 31, 1997 and 1996, respectively, against which there are allowances
for losses of $3,026,000 and $5,893,000, respectively.
 
Mortgage loans from Sun Life (U.S.)'s portfolio with an approximate book value
of $53,188,000 were included in a transaction also involving loans from the
portfolios of other SLOC entities with an aggregate book value of $256 million,
whereby such loans were securitized for sale to the public markets.
 
The Company has made commitments of mortgage loans on real estate into the
future. The outstanding commitments for these mortgages amount to $12,300,000
and $9,800,000 at December 31, 1997 and 1996, respectively.
 
                                       62
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
6.  INVESTMENT GAINS AND LOSSES:
 
<TABLE>
<CAPTION>
                                                                                      YEARS ENDED DECEMBER 31,
                                                                                   -------------------------------
                                                                                     1997       1996       1995
                                                                                   ---------  ---------  ---------
                                                                                             (IN 000'S)
<S>                                                                                <C>        <C>        <C>
Net realized gains (losses)
Bonds                                                                              $   2,882  $   5,631  $   3,935
Common stock of affiliates                                                            21,195         --         --
Mortgage loans                                                                         3,837        763        292
Real estate                                                                            2,912        599        391
Other invested assets                                                                   (717)       567     (2,549)
                                                                                   ---------  ---------  ---------
                                                                                   $  30,109  $   7,560  $   2,069
                                                                                   ---------  ---------  ---------
                                                                                   ---------  ---------  ---------
Changes in unrealized gains (losses):
Common stock of affiliates                                                         $  (2,894) $  (5,739) $      --
Mortgage loans                                                                         1,524       (600)    (1,574)
Real estate                                                                            3,377      4,624      3,583
Other invested assets                                                                   (854)        --         --
                                                                                   ---------  ---------  ---------
                                                                                   $   1,153  $  (1,715) $   2,009
                                                                                   ---------  ---------  ---------
                                                                                   ---------  ---------  ---------
</TABLE>
 
Realized capital gains and losses on bonds and mortgages which relate to changes
in levels of interest rates are charged or credited to an interest maintenance
reserve ("IMR") and amortized into income over the remaining contractual life of
the security sold. The net realized capital gains credited to the interest
maintenance reserve were $6,321,000 in 1997, $7,710,000 in 1996, and $12,714,000
in 1995. All gains and losses are transferred net of applicable income taxes.
 
7.  NET INVESTMENT INCOME:
Net investment income consisted of:
 
<TABLE>
<CAPTION>
                                                                                   YEARS ENDED DECEMBER 31,
                                                                              ----------------------------------
                                                                                 1997        1996        1995
                                                                              ----------  ----------  ----------
                                                                                          (IN 000'S)
<S>                                                                           <C>         <C>         <C>
Interest income from bonds                                                    $  188,924  $  178,695  $  205,445
Income from investment in common stock of affiliates                              41,181      50,408      35,403
Interest income from mortgage loans                                               76,073      92,591      99,766
Real estate investment income                                                     17,161      16,249      14,979
Interest income from policy loans                                                  3,582       2,790       2,777
Other                                                                               (193)      1,710       2,672
                                                                              ----------  ----------  ----------
    Gross investment income                                                      326,728     342,443     361,042
                                                                              ----------  ----------  ----------
Interest on surplus notes                                                        (42,481)    (23,061)    (31,813)
Investment expenses                                                              (13,998)    (15,629)    (16,357)
                                                                              ----------  ----------  ----------
Net investment income                                                         $  270,249  $  303,753  $  312,872
                                                                              ----------  ----------  ----------
                                                                              ----------  ----------  ----------
</TABLE>
 
                                       63
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
8.  DERIVATIVES:
The Company uses derivative instruments for interest risk management purposes,
including hedges against specific interest rate risk and to minimize the
Company's exposure to fluctuations in interest rates. The Company's use of
derivatives has included U.S. Treasury futures, conventional interest rate
swaps, and forward spread lock interest rate swaps.
 
In the case of interest rate futures, gains or losses on contracts that qualify
as hedges are deferred until the earliest of the completion of the hedging
transaction, determination that the transaction will no longer take place, or
determination that the hedge is no longer effective. Upon completion of the
hedge, where it is impractical to allocate gains (losses) to specific hedged
assets or liabilities, gains (losses) are deferred in IMR and amortized over the
remaining life of the hedged assets. At December 31, 1997 and 1996 there were no
futures contracts outstanding.
 
In the case of interest rate and foreign currency swap agreements and forward
spread lock interest rate swap agreements, gains or losses on terminated swaps
are deferred in IMR and amortized over the shorter of the remaining life of the
hedged asset or the remaining term of the swap contract. The net differential to
be paid or received on interest rate swaps is recorded monthly as interest rates
change.
 
Options are used to hedge the stock market interest exposure in the mortality
and expense risk charges and guaranteed minimum death benefit features of the
Company's variable annuities. The Company's open positions are as follows:
 
<TABLE>
<CAPTION>
                                                                                         SWAPS OUTSTANDING
                                                                                       AT DECEMBER 31, 1997
                                                                                 ---------------------------------
                                                                                      NOTIONAL       MARKET VALUE
                                                                                 PRINCIPAL AMOUNTS   OF POSITIONS
                                                                                 ------------------  -------------
                                                                                            (IN 000'S)
<S>                                                                              <C>                 <C>
Conventional interest rate swaps                                                    $     80,000       $  (2,891)
Foreign currency swap                                                                      1,700             208
Forward spread lock swaps                                                                 50,000             695
Asian Put Option S & P 500                                                                70,000             693
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                         SWAPS OUTSTANDING
                                                                                       AT DECEMBER 31, 1996
                                                                                 ---------------------------------
                                                                                      NOTIONAL       MARKET VALUE
                                                                                 PRINCIPAL AMOUNTS   OF POSITIONS
                                                                                 ------------------  -------------
                                                                                            (IN 000'S)
<S>                                                                              <C>                 <C>
Conventional interest rate swaps                                                    $    429,000       $  (2,443)
Foreign currency swap                                                                      2,100              70
Forward spread lock swaps                                                                 50,000             (50)
</TABLE>
 
The market value of swaps is the estimated amount that the Company would receive
or pay on termination or sale, taking into account current interest rates and
the current credit worthiness of the counterparties. The Company is exposed to
potential credit loss in the event of non-performance by counterparties. The
counterparties are major financial institutions and management believes that the
risk of incurring losses related to credit risk is remote.
 
9.  LEVERAGED LEASES:
The Company is a lessor in a leveraged lease agreement entered into on October
21, 1994, under which equipment having an estimated economic life of 25-40 years
was leased for a term of 9.75 years. The Company's equity investment represented
22.9% of the purchase price of the equipment. The balance of
 
                                       64
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
9.  LEVERAGED LEASES (CONTINUED):
the purchase price was furnished by third-party long-term debt financing,
collateralized by the equipment and non-recourse to the Company. At the end of
the lease term, the Master Lessee may exercise a fixed price purchase option to
purchase the equipment.
 
The Company's net investment in leveraged leases is composed of the following
elements:
 
<TABLE>
<CAPTION>
                                                                                         YEARS ENDED DECEMBER
                                                                                                 31,
                                                                                        ----------------------
                                                                                           1997        1996
                                                                                        ----------  ----------
                                                                                              (IN 000'S)
<S>                                                                                     <C>         <C>
Lease contracts receivable                                                              $   92,605  $  101,244
Less non-recourse debt                                                                     (92,589)   (101,227)
                                                                                        ----------  ----------
                                                                                                16          17
Estimated residual value of leased assets                                                   41,150      41,150
Less unearned and deferred income                                                          (10,324)    (11,501)
                                                                                        ----------  ----------
Investment in leveraged leases                                                              30,842      29,666
Less fees                                                                                     (163)       (188)
                                                                                        ----------  ----------
Net investment in leveraged leases                                                      $   30,679  $   29,478
                                                                                        ----------  ----------
                                                                                        ----------  ----------
</TABLE>
 
The net investment is included as an other invested asset.
 
10. REINSURANCE:
The Company has agreements with SLOC which provide that SLOC will reinsure the
mortality risks of the individual life insurance contracts sold by the Company.
Under these agreements basic death benefits and supplementary benefits are
reinsured on a yearly renewable term basis and coinsurance basis, respectively.
Reinsurance transactions under these agreements had the effect of decreasing
income from operations by approximately $2,658,000, $1,603,000 and $2,184,000
for the years ended December 31, 1997, 1996 and 1995, respectively.
 
Effective January 1, 1991, the Company entered into an agreement with SLOC under
which certain individual life insurance contracts issued by SLOC were reinsured
by the Company on a 90% coinsurance basis. During 1997 SLOC changed certain
assumptions used in determining the gross and the ceded reserve balance. The
Company reflected the effect of the changes in assumptions to its assumed
reserves as a direct credit to surplus. The effect of the change was a
$39,016,000 decrease in reserves. Also, effective January 1, 1991, the Company
entered into an agreement with SLOC which provides that SLOC will reinsure the
mortality risks in excess of $500,000 per policy for the individual life
insurance contracts assumed by the Company in the reinsurance agreement
described above. Such death benefits are reinsured on a yearly renewable term
basis. These agreements had the effect of increasing income from operations by
approximately $37,050,000, $35,161,000 and $11,821,000 for the years ended
December 31, 1997,1996 and 1995, respectively. The life reinsurance assumed
agreement requires the reinsurer to withhold funds in amounts equal to the
reserves assumed.
 
                                       65
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
10. REINSURANCE (CONTINUED):
The following are summarized pro-forma results of operations of the Company for
the years ended December 31, 1997, 1996 and 1995 before the effect of
reinsurance transactions with SLOC.
 
<TABLE>
<CAPTION>
                                                                                YEARS ENDED DECEMBER 31,
                                                                        ----------------------------------------
                                                                            1997          1996          1995
                                                                        ------------  ------------  ------------
                                                                                       (IN 000'S)
<S>                                                                     <C>           <C>           <C>
Income:
    Premiums, annuity deposits and other revenues                       $  2,230,980  $  1,858,145  $  1,619,337
    Net investment income and realized gains                                 300,669       312,870       315,967
                                                                        ------------  ------------  ------------
    Subtotal                                                               2,531,649     2,171,015     1,935,304
                                                                        ------------  ------------  ------------
Benefits and Expenses:
    Policyholder benefits                                                  2,240,597     1,928,720     1,760,917
    Other expenses                                                           187,591       155,531       130,302
                                                                        ------------  ------------  ------------
    Subtotal                                                               2,428,188     2,084,251     1,891,219
                                                                        ------------  ------------  ------------
Income from operations                                                  $    103,461  $     86,764  $     44,085
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
</TABLE>
 
The Company has an agreement with an unrelated company which provides
reinsurance of certain individual life insurance contracts on a modified
coinsurance basis and under which all deficiency reserves related to these
contracts are reinsured. Reinsurance transactions under this agreement had the
effect of decreasing income from operations by $2,658,000 in 1997, $46,000 in
1996, and by $1,599,000 in 1995.
 
11. WITHDRAWAL CHARACTERISTICS OF ANNUITY ACTUARIAL RESERVES AND DEPOSIT
LIABILITIES:
The withdrawal characteristics of general account and separate account annuity
reserves and deposits are as follows:
 
<TABLE>
<CAPTION>
                                                                                              DECEMBER 31, 1997
                                                                                        -----------------------------
                                                                                            AMOUNT       % OF TOTAL
                                                                                        --------------  -------------
                                                                                                 (IN 000'S)
<S>                                                                                     <C>             <C>
Subject to discretionary withdrawal-with adjustment:
    With market value adjustment                                                        $    3,415,394          25%
    At book value less surrender charges (surrender charge >5%)                              7,672,211          57
    At book value (minimal or no charge or adjustment)                                       1,259,698           9
Not subject to discretionary withdrawal provision                                            1,164,651           9
                                                                                        --------------         ---
Total annuity actuarial reserves and deposit liabilities                                $   13,511,954         100%
                                                                                        --------------         ---
                                                                                        --------------         ---
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                              DECEMBER 31, 1996
                                                                                        -----------------------------
                                                                                            AMOUNT       % OF TOTAL
                                                                                        --------------  -------------
                                                                                                 (IN 000'S)
<S>                                                                                     <C>             <C>
Subject to discretionary withdrawal-with adjustment:
    With market value adjustment                                                        $    3,547,683          31%
    At book value less surrender charges (surrender charge >5%)                              5,626,117          48
    At book value (minimal or no charge or adjustment)                                       1,264,586          11
Not subject to discretionary withdrawal provision                                            1,218,157          10
                                                                                        --------------         ---
Total annuity actuarial reserves and deposit liabilities                                $   11,656,543         100%
                                                                                        --------------         ---
                                                                                        --------------         ---
</TABLE>
 
                                       66
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
12. RETIREMENT PLANS:
The Company participates with SLOC in a non contributory defined benefit pension
plan covering essentially all employees. The benefits are based on years of
service and compensation.
 
The funding policy for the pension plan is to contribute an amount which at
least satisfies the minimum amount required by ERISA; currently the plan is
fully funded. The Company is charged for its share of the pension cost based
upon its covered participants. Pension plan assets consist principally of
separate accounts of SLOC.
 
The Company's share of the group's accrued pension cost at December 31, 1997,
1996 and 1995 was $593,000, $446,000 and $420,000, respectively. The Company's
share of net periodic pension cost was $146,000, $27,000 and $3,000, for 1997,
1996 and 1995, respectively.
 
The Company also participates with SLOC and certain affiliates in a 401(k)
savings plan for which substantially all employees are eligible. The Company
matches, up to specified amounts, employees' contributions to the plan. Company
contributions were $259,000, $233,000 and $185,000 for the years ended December
31, 1997, 1996 and 1995, respectively.
 
OTHER POST-RETIREMENT BENEFIT PLANS
 
In addition to pension benefits the Company provides certain health, dental, and
life insurance benefits ("post-retirement benefits") for retired employees and
dependents. Substantially all employees may become eligible for these benefits
if they reach normal retirement age while working for the Company, or retire
early upon satisfying an alternate age plus service condition. Life insurance
benefits are generally set at a fixed amount.
 
                                       67
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
13. FAIR VALUE OF FINANCIAL INSTRUMENTS:
The following table presents the carrying amounts and estimated fair values of
the Company's financial instruments at December 31, 1997 and 1996:
<TABLE>
<CAPTION>
                                                                  DECEMBER 31, 1997
                                                       ---------------------------------------
                                                        CARRYING AMOUNT   ESTIMATED FAIR VALUE
                                                       -----------------  --------------------
                                                                     (IN 000'S)
<S>                                                    <C>                <C>
ASSETS:
Bonds                                                    $   2,451,731       $    2,569,199
Mortgages                                                      684,035              706,975
LIABILITIES:
Insurance reserves                                       $     123,128       $      123,128
Individual annuities                                           307,668              302,165
Pension products                                             1,527,433            1,561,108
Derivatives                                                         --               (1,295)
 
<CAPTION>
                                                                  DECEMBER 31, 1996
                                                       ---------------------------------------
                                                        CARRYING AMOUNT   ESTIMATED FAIR VALUE
                                                       -----------------  --------------------
                                                                     (IN 000'S)
<S>                                                    <C>                <C>
ASSETS:
Bonds                                                    $   2,316,857       $    2,392,226
Mortgages                                                      938,932              958,909
LIABILITIES:
Insurance reserves                                       $     122,606       $      122,606
Individual annuities                                           373,488              367,878
Pension products                                             1,911,284            1,922,602
Derivatives                                                         --               (2,423)
</TABLE>
 
The major methods and assumptions used in estimating the fair values of
financial instruments are as follows:
 
The fair values of short-term bonds are estimated to be the amortized cost. The
fair values of long-term bonds which are publicly traded are based upon market
prices or dealer quotes. For privately placed bonds, fair values are estimated
by taking into account prices for publicly traded bonds of similar credit risk
and maturity and repayment and liquidity characteristics.
 
The fair values of the Company's general account insurance reserves and
liabilities under investment-type contracts (insurance, annuity and pension
contracts that do not involve mortality or morbidity risks) are estimated using
discounted cash flow analyses or surrender values. Those contracts that are
deemed to have short-term guarantees have a carrying amount equal to the
estimated market value.
 
The fair values of mortgages are estimated by discounting future cash flows
using current rates at which similar loans would be made to borrowers with
similar credit ratings and for the same remaining maturities.
 
The fair values of derivative financial instruments are estimated using the
process described in Note 8.
 
                                       68
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
14. STATUTORY INVESTMENT VALUATION RESERVES:
The asset valuation reserve ("AVR") provides a reserve for losses from
investments in bonds, stocks, mortgage loans, real estate and other invested
assets with related increases or decreases being recorded directly to surplus.
 
Realized capital gains and losses on bonds and mortgages which relate to changes
in levels of interest rates are charged or credited to an interest maintenance
reserve ("IMR") and amortized into income over the remaining contractual life of
the security sold.
 
The tables shown below present changes in the major elements of the AVR and IMR.
 
<TABLE>
<CAPTION>
                                                                              1997                  1996
                                                                      --------------------  --------------------
                                                                         AVR        IMR        AVR        IMR
                                                                      ---------  ---------  ---------  ---------
                                                                           (IN 000'S)            (IN 000'S)
<S>                                                                   <C>        <C>        <C>        <C>
Balance, beginning of year                                            $  53,911  $  28,675  $  42,099  $  25,218
Net realized investment gains, net of tax                                17,400      6,321      3,160      5,011
Amortization of net investment gains                                         --     (1,166)        --     (1,557)
Unrealized investment gains (losses)                                     (2,340)        --      1,502         --
Required by formula                                                     (21,366)        --      7,150          3
                                                                      ---------  ---------  ---------  ---------
Balance, end of year                                                  $  47,605  $  33,830  $  53,911  $  28,675
                                                                      ---------  ---------  ---------  ---------
                                                                      ---------  ---------  ---------  ---------
</TABLE>
 
15. FEDERAL INCOME TAXES:
The Company and its subsidiaries file a consolidated federal income tax return.
Federal income taxes are calculated for the consolidated group based upon
amounts determined to be payable as a result of operations within the current
year. No provision is recognized for timing differences which may exist between
financial statement and taxable income. Such timing differences include
reserves, depreciation and accrual of market discount on bonds. Cash payments
for federal income taxes were approximately $31,000,000, $19,264,000 and
$12,429,000 for the years ended December 31, 1997, 1996 and 1995, respectively.
 
16. SURPLUS NOTES AND NOTE RECEIVABLE:
On December 22, 1997, the Company issued a $250,000,000 surplus note to Life
Holdco. This note has an interest rate of 8.625% and is due on or after November
6, 2027. On May 9, 1997, the Company issued a short-term note of $600,000,000 to
Life Holdco at an interest rate of 5.10%, which was extended at various interest
rates. This note was repaid on December 22, 1997.
 
The Company had issued and outstanding surplus notes to SLOC with an aggregate
carrying value of $335,000,000, during the period 1982 through January 16, 1996
at interest rates between 7.25% and 10%. The Company repaid all principal and
interest associated with these surplus notes on January 16, 1996.
 
On December 19, 1995 the Company issued surplus notes totaling $315,000,000 to
an affiliate, Sun Canada Financial Co., at interest rates between 5.75% and
7.25%. Of these notes, $157,500,000 will mature in the year 2007 and
$157,500,000 will mature in the year 2015. Interest on these notes is payable
semi-annually.
 
Principal and interest on surplus notes are payable only to the extent that the
Company meets specified requirements regarding free surplus exclusive of the
principal amount and accrued interest, if any, on these notes and with the
consent of the Delaware Insurance Commissioner. In addition, with regard to
surplus notes outstanding through January 16, 1996, subsequent to December 31,
1994 interest payments required
 
                                       69
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
16. SURPLUS NOTES AND NOTE RECEIVABLE (CONTINUED):
the consent of the Delaware Insurance Commissioner. Payment of principal and
interest on the notes issued in 1995 also requires the consents of the Delaware
Insurance Commissioner and Canadian Office of the Superintendent of Financial
Institutions.
 
The Company obtained the required consents and expensed $42,481,000, $23,061,000
and $31,813,000 for interest on surplus notes for the years ended December 31,
1997, 1996 and 1995, respectively.
 
17. MANAGEMENT AND SERVICE CONTRACTS:
The Company has an agreement with SLOC which provides that SLOC will furnish, as
requested, personnel as well as certain services and facilities on a
cost-reimbursement basis. Expenses under this agreement amounted to
approximately $15,997,000 in 1997, $20,192,000 in 1996, and $20,293,000 in 1995.
 
18. RISK-BASED CAPITAL:
Effective December 31, 1993 the NAIC adopted risk-based capital requirements for
life insurance companies. The risk-based capital requirements provide a method
for measuring the minimum acceptable amount of adjusted capital that a life
insurer should have, as determined under statutory accounting practices, taking
into account the risk characteristics of its investments and products. The
Company has met the minimum risk-based capital requirements at December 31, 1997
and 1996.
 
19. ACCOUNTING POLICIES AND PRINCIPLES:
The financial statements of the Company have been prepared on the basis of
statutory accounting practices which, prior to 1996, were considered by the
insurance industry and the accounting profession to be in accordance with GAAP
for mutual life insurance companies. The primary differences between statutory
accounting practices and GAAP are described as follows. Under statutory
accounting practices, financial statements are not consolidated and investments
in subsidiaries are shown at net equity value. Accordingly, the assets,
liabilities and results of operations of the Company's subsidiaries are not
consolidated with the assets, liabilities and results of operations,
respectively, of the Company. Changes in net equity value of the common stock of
the Company's United States life insurance subsidiaries are directly reflected
in the Company's surplus. Changes in the net equity value of the common stock of
all other subsidiaries are directly reflected in the Company's Asset Valuation
Reserve. Dividends paid by subsidiaries to the Company are included in the
Company's net investment income.
 
Other differences between statutory accounting practices and GAAP include the
following: statutory accounting practices do not recognize the following assets
or liabilities which are reflected under GAAP - deferred policy acquisition
costs, deferred federal income taxes and statutory non-admitted assets. Asset
Valuation Reserves and Interest Maintenance Reserves are established under
statutory accounting practices but not under GAAP. Methods for calculating real
estate depreciation and investment valuation allowances differ under statutory
accounting practices and GAAP. Actuarial assumptions and reserving methods
differ under statutory accounting practices and GAAP. Premiums for universal
life and investment type products are recognized as income for statutory
purposes and as deposits to policyholders' accounts for GAAP.
 
Because the Company's management uses financial information prepared in
conformity with accounting principles generally accepted in Canada in the normal
course of business, the management of Sun Life Assurance Company of Canada
(U.S.) has determined that the cost of complying with Statement No. 120
"Accounting and Reporting by Mutual Insurance Enterprises and by Insurance
Enterprises for Certain Long
 
                                       70
<PAGE>
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
(Wholly-owned subsidiary of Sun Life of Canada (U.S.) Holdings, Inc.)
 
NOTES TO STATUTORY FINANCIAL STATEMENTS (CONTINUED)
YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
 
19. ACCOUNTING POLICIES AND PRINCIPLES (CONTINUED):
Duration Participating Contracts" exceed the benefits that the Company, or the
users of its financial statements, would experience. Consequently, the Company
has elected not to apply such standards in the preparation of these financial
statements.
 
                                       71
<PAGE>
INDEPENDENT AUDITORS' REPORT
 
TO THE BOARD OF DIRECTORS
SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
 
We have audited the accompanying statutory statements of admitted assets,
liabilities, and capital stock and surplus of Sun Life Assurance Company of
Canada (U.S.) as of December 31, 1997 and 1996, and the related statutory
statements of operations, changes in capital stock and surplus, and cash flow
for each of the three years in the period ended December 31, 1997. These
financial statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.
 
We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
As described more fully in Notes 1 and 19 to the financial statements, the
Company prepared these financial statements using accounting practices
prescribed or permitted by the Insurance Department of the State of Delaware,
which practices differ from generally accepted accounting principles. The
effects on the financial statements of the variances between the statutory basis
of accounting and generally accepted accounting principles, although not
reasonably determinable, are presumed to be material.
 
In our opinion, the financial statements referred to above present fairly, in
all material respects, the admitted assets, liabilities, and capital stock and
surplus of Sun Life Assurance Company of Canada (U.S.) as of December 31, 1997
and 1996, and the results of its operations and its cash flow for each of the
three years in the period ended December 31, 1997 on the basis of accounting
described in Notes 1 and 19.
 
However, because of the effects of the matter discussed in the second preceding
paragraph, in our opinion, the financial statements referred to above do not
present fairly, in conformity with generally accepted accounting principles, the
financial position of Sun Life Assurance Company of Canada (U.S.) as of December
31, 1997 and 1996 or the results of its operations or its cash flow for each of
the three years in the period ended December 31, 1997.
 
As management has stated in Note 19, because the Company's management uses
financial information prepared in accordance with accounting principles
generally accepted in Canada in the normal course of business, the management of
Sun Life Assurance Company of Canada (U.S.) has determined that the cost of
complying with Statement No. 120 would exceed the benefits that the Company, or
the users of its financial statements, would experience. Consequently, the
Company has elected not to apply such standards in the preparation of these
financial statements.
 
DELOITTE & TOUCHE LLP
 
Boston, Massachusetts
February 5, 1998
 
                                       72
<PAGE>
                                   APPENDIX A
 
ILLUSTRATIVE EXAMPLE OF VARIABLE ACCUMULATION UNIT VALUE CALCULATIONS:
 
    Suppose the net asset value of a Fund share at the end of the current
valuation period is $18.38; at the end of the immediately preceding valuation
period was $18.32; the Valuation Period is one day; and no dividends or
distributions caused Fund shares to go "ex-dividend" during the current
Valuation Period. $18.38 divided by $18.32 is 1.00327511. Subtracting the one
day risk factor for mortality and expense risks and the administrative expense
charge of .00003809 (the daily equivalent of the current maximum charge of 1.40%
on an annual basis) gives a net investment factor of 1.00323702. If the value of
the variable accumulation unit for the immediately preceding valuation period
had been 14.5645672, the value for the current valuation period would be
14.6117130 (14.5645672 X 1.00323702).
 
ILLUSTRATIVE EXAMPLE OF VARIABLE ANNUITY UNIT VALUE CALCULATIONS:
 
    Suppose the circumstances of the first example exist, and the value of an
annuity unit for the immediately preceding valuation period had been 12.3456789.
If the first variable annuity payment is determined by using an annuity payment
based on an assumed interest rate of 3% per year, the value of the annuity unit
for the current valuation period would be 12.3846391 (12.3456789 X 1.00323702
(the Net Investment Factor) X 0.99991902). 0.99991902 is the factor, for a one
day Valuation Period, that neutralizes the assumed interest rate of three
percent (3%) per year used to establish the Annuity Payment Rates found in
certain Contracts.
 
ILLUSTRATIVE EXAMPLE OF VARIABLE ANNUITY PAYMENT CALCULATIONS:
 
    Suppose that a Participant's Account is credited with 8,765.4321 variable
accumulation units of a particular Sub-Account but is not credited with any
fixed accumulation units; that the variable accumulation unit value and the
annuity unit value for the particular Sub-Account for the valuation period which
ends immediately preceding the annuity commencement date are 14.5645672 and
12.3456789 respectively; that the annuity payment rate for the age and option
elected is $6.78 per $1,000; and that the annuity unit value on the day prior to
the second variable annuity payment date is 12.3846391. The first variable
annuity payment would be $865.57 (8,765.4321 X 14.5645672 X 6.78 divided by
1,000). The number of annuity units credited would be 70.1112 ($865.57 divided
by 12.3456789) and the second variable annuity payment would be $868.30 (70.1112
X 12.3846391).
 
                                       73
<PAGE>
                                   APPENDIX B
 
STATE PREMIUM TAXES
 
    The amount of applicable tax varies depending on the jurisdiction and is
subject to change by the legislature or other authority. In many jurisdictions
there is no tax at all. The Company believes that as of January 31, 1998 premium
taxes will be imposed with respect to Contracts offered by this Prospectus only
by the jurisdictions listed below at the rates indicated. For information
subsequent to January 31, 1998 a tax adviser should be consulted.
 
<TABLE>
<CAPTION>
                                                  RATE OF TAX
                                           -------------------------
                                           QUALIFIED   NON-QUALIFIED
 STATE                                     CONTRACTS     CONTRACTS
 ----------------------------------------  ---------   -------------
 <S>                                       <C>         <C>
 California                                   .50%        2.35%
 District of Columbia                        2.25%        2.25%
 Kentucky                                    2.00%        2.00%
 Maine                                        --          2.00%
 Nevada                                       --          3.50%
 South Dakota                                 --          1.25%
 West Virginia                               1.00%        1.00%
 Wyoming                                      --          1.00%
</TABLE>
 
                                       74
<PAGE>
                                   APPENDIX C
        WITHDRAWALS, WITHDRAWAL CHARGES AND THE MARKET VALUE ADJUSTMENT
 
PART 1: VARIABLE ACCOUNT (THE MARKET VALUE ADJUSTMENT DOES NOT APPLY TO THE
VARIABLE ACCOUNT)
 
WITHDRAWAL CHARGE CALCULATION
 
FULL SURRENDER:
 
    Assume a Purchase Payment of $40,000 is made on the Date of Coverage, no
additional Purchase Payments are made and there are no partial withdrawals. The
table below presents four examples of the withdrawal charge resulting from a
full surrender of the Participant's Account, based on hypothetical Account
Values.
 
<TABLE>
<CAPTION>
          HYPOTHETICAL      FREE       PURCHASE    WITHDRAWAL   WITHDRAWAL
 ACCOUNT    ACCOUNT      WITHDRAWAL    PAYMENTS      CHARGE       CHARGE
  YEAR       VALUE         AMOUNT     LIQUIDATED   PERCENTAGE     AMOUNT
 -------  ------------   ----------   ----------   ----------   ----------
 <S>      <C>            <C>          <C>          <C>          <C>
    1        $41,000       $ 4,000(a)   $37,000    6.00   %       $2,220
    3        $52,000       $12,000(b)   $40,000    5.00   %       $2,000
    7        $80,000       $28,000(c)   $40,000    3.00   %       $1,200
    9        $98,000       $28,000(d)   $40,000    0.00   %       $    0
</TABLE>
 
- - - ------------------------
(a) The free withdrawal amount during an account year is equal to 10% of new
    payments (those payments made in current account year or in the six
    immediately preceding account years) less any prior partial withdrawals in
    that account year. Any portion of the free withdrawal amount that is not
    used in the current Account Year is carried forward into future years. In
    the first account year 10% of new payments is $4,000. Therefore, on full
    surrender $4,000 is withdrawn free of the withdrawal charge and the purchase
    payment liquidated is $37,000 (account value less free withdrawal amount).
    The withdrawal charge amount is determined by applying the withdrawal charge
    percentage to the purchase payment liquidated.
 
(b) In the third account year, the free withdrawal amount is equal to $12,000
    ($4,000 for the current account year, plus an additional $8,000 for account
    years 1 & 2 because no partial withdrawals were taken and the unused free
    withdrawal amount is carried forward into future account years). The
    withdrawal charge percentage is applied to the liquidated purchase payment
    (account value less free withdrawal amount).
 
(c) In the seventh account year, the free withdrawal amount is equal to $28,000
    ($4,000 for the current account year, plus an additional $24,000 for account
    years 1-6, $4,000 for each account year because no partial withdrawals were
    taken and the unused free withdrawal amount is carried forward into future
    account years). The withdrawal charge percentage is applied to the
    liquidated purchase payment (account value less free withdrawal amount, but
    not greater than actual purchase payments).
 
(d) There is no withdrawal charge on any purchase payment liquidated that has
    been in the participant's account for at least seven years.
 
PARTIAL WITHDRAWAL:
 
    Assume a single purchase payment of $40,000 is deposited at issue, no
additional purchase payments are made, no partial withdrawals have been taken
prior to the fifth account year, and there are a series of three partial
withdrawals made during the fifth account year of $9,000, $12,000, and $15,000.
 
<TABLE>
<CAPTION>
     HYPOTHETICAL   PARTIAL       FREE      PURCHASE   WITHDRAWAL  WITHDRAWAL
       ACCOUNT     WITHDRAWAL  WITHDRAWAL   PAYMENTS     CHARGE      CHARGE
        VALUE        AMOUNT      AMOUNT    LIQUIDATED  PERCENTAGE    AMOUNT
     ------------  ----------  ----------  ----------  ----------  ----------
 <S> <C>           <C>         <C>         <C>         <C>         <C>
 (a)    $64,000      $ 9,000     $20,000     $     0   4.00   %       $  0
 (b)    $56,000      $12,000     $11,000     $ 1,000   4.00   %       $ 40
 (c)    $40,000      $15,000     $     0     $15,000   4.00   %       $600
</TABLE>
 
- - - ------------------------
(a) The free withdrawal amount during an account year is equal to 10% of new
    payments (those payments made in current account year or in the six
    immediately preceding account years) less any prior partial withdrawals in
    that account year. Any portion of the free withdrawal amount that is not
    used in the current account year is carried forward into future years. In
    the fifth account year, the free withdrawal amount is
 
                                       75
<PAGE>
    equal to $20,000 ($4,000 for the current account year, plus an additional
    $16,000 for account years 1-4, $4,000 for each account year because no
    partial withdrawals were taken). The partial withdrawal amount ($9,000) is
    less than the free withdrawal amount so no purchase payments are liquidated
    and no withdrawal charge applies.
 
(b) Since a partial withdrawal of $9,000 was taken, the remaining free
    withdrawal amount is equal to $11,000. The $12,000 partial withdrawal will
    first be applied against the $11,000 free withdrawal amount, and then will
    liquidate purchase payments of $1,000, incurring a withdrawal charge of $40.
 
(c) The free withdrawal amount is zero since the previous partial withdrawals
    have already used the free withdrawal amount. The entire partial withdrawal
    amount will result in purchase payments being liquidated and will incur a
    withdrawal charge. At the beginning of the next account year, 10% of
    purchase payments would be available for withdrawal requests during that
    account year.
 
PART 2--FIXED ACCOUNT--EXAMPLES OF THE MARKET VALUE ADJUSTMENT (MVA)
 
    The MVA factor is:
 
<TABLE>
 <S>                        <C>
                              N/12
                      1 + I
                    ( ----- )      -1
                      1 + J
</TABLE>
 
    These examples assume the following:
 
        1)  the Guarantee Amount was allocated to a five year Guarantee Period
    with a Guaranteed Interest Rate of 6% or .06 (l).
 
        2)  the date of surrender is two years from the Expiration Date (N =
    24).
 
        3)  the value of the Guarantee Amount on the date of surrender is
    $11,910.16.
 
        4)  the interest earned in the current Account Year is $674.16.
 
        5)  no transfers or partial withdrawals affecting this Guarantee Amount
    have been made
 
        6)  withdrawal charges, if any, are calculated in the same manner as
    shown in the examples in Part 1.
 
EXAMPLE OF A NEGATIVE MVA:
 
    Assume that on the date of surrender, the current rate (J) is 8% or .08
 
<TABLE>
    <C>              <S> <C>     <C>
                                   N/12
                         1 + l
    The MVA factor =   ( ------  )       -1
                         1 + J
                                   24/12
                         1 + .06
                   =   ( ------  )       -1
                         1 + .08
 
                   =   (.981)2 -1
 
                   =   .963 -1
 
                   = - .037
</TABLE>
 
    The value of the Guarantee Amount less interest credited to the Guarantee
Amount in the current Account Year is multiplied by the MVA factor to determine
the MVA
 
                   ($11,910.16 - $674.16) X (-.037) = -$415.73
 
    -$415.73 represents the MVA that will be deducted from the value of the
Guarantee Amount before the deduction of any withdrawal charge.
 
    For a partial withdrawal of $2,000 from this Guarantee Amount, the MVA would
be ($2,000.00 - $674.16) X (-.037) = -$49.06. -$49.06 represents the MVA that
will be deducted from the partial withdrawal amount before the deduction of any
withdrawal charge.
 
                                       76
<PAGE>
EXAMPLE OF A POSITIVE MVA:
Assume that on the date of surrender, the current rate (J) is 5% or .05.
 
                                   N/12
                         1 + l
    The MVA factor =   ( ------  )       -1
                         1 + J
                                   24/12
                         1 + .06
                   =   ( ------  )       -1
                         1 + .05
 
                   =   (1.010)2 -1
 
                   =   1.019 -1
 
                   =   .019
 
    The value of the Guarantee Amount less interested credited to the Guarantee
Amount in the current Account Year is multiplied by the MVA factor to determine
the MVA
 
                     ($11,910.16 - $674.16) X .019 = $213.48
 
    $213.48 represents the MVA that would be added to the value of the Guarantee
Amount before the deduction of any withdrawal charge.
 
    For a partial withdrawal of $2,000 from this Guarantee Amount, the MVA would
be ($2,000.00 - $674.16) X .019 = $25.19.
 
    $25.19 represents the MVA that would be added to the value of the partial
withdrawal amount before the deduction of any withdrawal charge.
 
                                       77
<PAGE>
                                   APPENDIX D
                        CALCULATION OF PERFORMANCE DATA
 
AVERAGE ANNUAL TOTAL RETURN:
 
    The table below shows, for various Sub-Accounts of the Variable Account, the
Average Annual Total Return for the stated periods (or shorter period indicated
in the note below), based upon a hypothetical initial Purchase Payment of
$1,000, calculated in accordance with the formula set out after the table. For
purposes of determining the investment results in this table, the actual
investment performance of each Fund is reflected from the date the Fund
commenced operations ("Inception"), although the Contracts have been offered
only since February   , 1998. No information is shown for the Funds that have
not commenced operations or that have been in operation for less than one year.
 
    The Securities and Exchange Commission defines "standardized" total return
information to mean Average Annual Total Return, based on a hypothetical initial
purchase payment of $1,000 and calculated in accordance with the formula set
forth after the table, but presented only for periods subsequent to the
commencement of the Sub-Account in question. Since as of the date of this
Prospectus, the Sub-Accounts have no performance history, no standardized total
return information is currently provided. Standardized total return information
will be provided after the Sub-Accounts have been in operation for one year.
 
                          AVERAGE ANNUAL TOTAL RETURN
                        PERIOD ENDING DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                                             1 YEAR       5 YEAR       10 YEAR                        DATE OF
                                             PERIOD       PERIOD       PERIOD      LIFE (1)          INCEPTION
                                           -----------  -----------  -----------  -----------  ----------------------
 <S>                                       <C>          <C>          <C>          <C>          <C>
 AIM V.I. Capital Appreciation Fund......                                                           June 1, 1993
 AIM V.I. Growth Fund....................                                                           June 1, 1993
 AIM V.I. Growth and Income Fund.........                                                           May 2, 1994
 AIM V.I. International Equity Fund......                                                           June 1, 1993
 Alger American Growth Portfolio.........                                                         January 9, 1989
 Alger American Income and Growth
  Portfolio..............................                                                        November 15, 1988
 Alger American Small Capitalization
  Portfolio..............................                                                        September 21, 1988
 J.P. Morgan Equity Portfolio............                                                       January 3, 1995 (1)
 J.P. Morgan International Opportunities
  Portfolio..............................                                                       January 3, 1995 (1)
 J.P. Morgan Small Company Portfolio.....                                                       January 3, 1995 (1)
 Lord Abbett Growth and Income
  Portfolio..............................                                                        December 11, 1989
 MFS/Sun Life Capital Appreciation
  Series.................................                                                         August 13, 1985
 MFS/Sun Life Emerging Growth Series.....                                                           May 1, 1995
 MFS/Sun Life Government Securities
  Series.................................                                                         August 12, 1985
 MFS/Sun Life High Yield Series..........                                                         August 13, 1985
 MFS/Sun Life Money Market Series........                                                         August 29, 1985
 MFS/Sun Life Utilities Series...........                                                        November 16, 1993
 OCC Equity Portfolio....................                                                        August 1, 1988 (2)
 OCC Small Cap Portfolio.................                                                        August 1, 1988 (2)
 Warburg Pincus International Equity
  Portfolio..............................                                                          June 30, 1995
 Warburg Pincus Post-Venture Capital
  Portfolio..............................                                                        September 30, 1996
 Warburg Pincus Small Company Growth
  Portfolio..............................                                                          June 30, 1995
</TABLE>
 
- - - ------------------------
 
(1) From commencement of investment operations.
 
(2) On September 16, 1994, an investment company then called Quest for Value
    Accumulation Trust (the "Old Trust") was effectively divided into two
    investment funds, the Old Trust and the OCC Accumulation Trust, at which
    time the OCC Accumulation Trust commenced operations. The total net assets
    for each of the Equity and Small Cap Portfolios immediately after the
    transaction were $86,789,755 and $139,812,573, respectively, with respect to
    the Old Trust, and for each of the Equity and Small Cap Portfolios,
    $3,764,598 and
 
                                       78
<PAGE>
    $8,129,274, respectively, with respect to the OCC Accumulation Trust. The
    Equity and Small Cap Portfolios commenced operations as part of the OCC
    Accumulation Trust on September 16, 1994. The Old Trust commenced operations
    on August 1, 1988.
 
    For the period prior to September 16, 1994, the performance figures above
    for each of the Equity and Small Cap reflect the performance of the
    corresponding Portfolios of the Old Trust.
 
The length of the period and the last day of each period used in the above table
are set out in the table heading and in the footnotes above. The Average Annual
Total Return for each period was determined by finding the average annual
compounded rate of return over each period that would equate the initial amount
invested to the ending redeemable value for that period, in accordance with the
following formula:
 
                                        n
                                 P(1 + T) = ERV
 
      Where: P = a hypothetical initial Purchase Payment
                 of $1,000
             T = average annual total return for the
                 period
             n = number of years
           ERV = redeemable value (as of the end of the
                 period) of a hypothetical $1,000
                 Purchase Payment made at the beginning
                 of the 1-year, 5-year, or 10-year period
                 (or fractional portion thereof)
 
   The formula assumes that: 1) all recurring fees have been deducted from the
   Participant's Account; 2) all applicable non-recurring Contract charges are
   deducted at the end of the period; and 3) there will be a full surrender at
   the end of the period.
 
    The $30 annual Account Fee will be allocated among the Sub-Accounts so that
each Sub-Account's allocated portion of the Account Fee is proportional to the
percentage of the number of Individual Contracts and Certificates that have
amounts allocated to that Sub-Account. Because the impact of Account Fees on a
particular Contract may differ from those assumed in the computation due to
differences between actual allocations and the assumed ones, the total return
that would have been experienced by an actual Contract over these same time
periods may have been different from that shown above.
 
ADDITIONAL NON-STANDARDIZED INVESTMENT PERFORMANCE:
 
    The Variable Account may illustrate its results over various periods and
compare its results to indices and other variable annuities in sales materials
including advertisements, brochures and reports. Such results may be computed on
a "cumulative" and/or "annualized" basis.
 
    "Cumulative" quotations are arrived at by calculating the change in the
Accumulation Unit value of a Sub-Account between the first and last day of the
base period being measured, and expressing the difference as a percentage of the
Accumulation Unit value at the beginning of the base period.
 
    "Annualized" quotations (described in the following table as "Compound
Growth Rate") are calculated by applying a formula which determines the level
rate of return which, if earned over the entire base period, would produce the
cumulative return.
 
                                       79
<PAGE>
                    NON-STANDARDIZED INVESTMENT PERFORMANCE
$10,000 INVESTED IN                       ...WOULD HAVE GROWN TO THIS AMOUNT ON
THIS SUB-ACCOUNT UNDER A                            DECEMBER 31, 1997*
FUTURITY CONTRACT,
THIS MANY YEARS AGO...
 
<TABLE>
<CAPTION>
                                                                                                                 AIM V.I. GROWTH
            AIM V.I. CAPITAL APPRECIATION FUND                          AIM V.I. GROWTH FUND                     AND INCOME FUND
      ----------------------------------------------       ----------------------------------------------       -----------------
NUMBER                             CUMULATIVE COMPOUND NUMBER                           CUMULATIVE COMPOUND NUMBER
 OF                                 GROWTH   GROWTH   OF                                 GROWTH   GROWTH   OF
YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS
- - - ----- ----------------- ---------- --------  ------- ----- ----------------- ---------- --------  ------- ----- -----------------
<S>   <C>               <C>        <C>       <C>     <C>   <C>               <C>        <C>       <C>     <C>   <C>
  1                                                    1                                                    1
  2                                                    2                                                    2
  3                                                    3                                                    3
  4                                                    4                                                    4
  5                                                    5                                                    5
 10                                                   10                                                   10
 
Life                                                 Life                                                 Life
 
<CAPTION>
NUMBE             CUMULATIVE COMPOUND
 OF                GROWTH   GROWTH
YEARS    AMOUNT     RATE     RATE
- - - -----  ---------- --------  -------
<S>   <C>         <C>       <C>
  1
  2
  3
  4
  5
 10
Life
</TABLE>
<TABLE>
<CAPTION>
                                                                                                                 ALGER AMERICAN
                                                                                                                INCOME AND GROWTH
            AIM V.I. INTERNATIONAL EQUITY FUND                    ALGER AMERICAN GROWTH PORTFOLIO                   PORTFOLIO
      ----------------------------------------------       ----------------------------------------------       -----------------
NUMBER                             CUMULATIVE COMPOUND NUMBER                           CUMULATIVE COMPOUND NUMBER
 OF                                 GROWTH   GROWTH   OF                                 GROWTH   GROWTH   OF
YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS
- - - ----- ----------------- ---------- --------  ------- ----- ----------------- ---------- --------  ------- ----- -----------------
<S>   <C>               <C>        <C>       <C>     <C>   <C>               <C>        <C>       <C>     <C>   <C>
  1                                                    1                                                    1
  2                                                    2                                                    2
  3                                                    3                                                    3
  4                                                    4                                                    4
  5                                                    5                                                    5
 10                                                                                                        10
 
Life                                                 Life                                                 Life
 
<CAPTION>
NUMBE             CUMULATIVE COMPOUND
 OF                GROWTH   GROWTH
YEARS    AMOUNT     RATE     RATE
- - - -----  ---------- --------  -------
<S>   <C>         <C>       <C>
  1
  2
  3
  4
  5
 10
Life
</TABLE>
 
- - - ----------------------------------------
*For purposes of determining these investment results, the actual investment
performance of each Fund is reflected from the date the Fund commenced
operations, although the Contracts have been offered only since February   ,
1998. No information is shown for Funds that have not commenced operations or
that have been in operation for less than one year. The charges imposed under
the Contract against the assets of the Variable Account for mortality and
expense risks and administrative expenses have been deducted. However, the
annual Account Fee is not reflected and these examples do not assume surrender
at the end of the period.
 
                                       80
<PAGE>
             NON-STANDARDIZED INVESTMENT PERFORMANCE -- continued:
$10,000 INVESTED IN                       ...WOULD HAVE GROWN TO THIS AMOUNT ON
THIS SUB-ACCOUNT UNDER A                            DECEMBER 31, 1997*
FUTURITY CONTRACT,
THIS MANY YEARS AGO...
 
<TABLE>
<CAPTION>
                                                                                                                   J.P. MORGAN
                                                                                                                  INTERNATIONAL
                                                                                                                  OPPORTUNITIES
      ALGER AMERICAN SMALL CAPITALIZATION PORTFOLIO                 J.P. MORGAN EQUITY PORTFOLIO                    PORTFOLIO
      ----------------------------------------------       ----------------------------------------------       -----------------
NUMBER                             CUMULATIVE COMPOUND NUMBER                           CUMULATIVE COMPOUND NUMBER
 OF                                 GROWTH   GROWTH   OF                                 GROWTH   GROWTH   OF
YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS
- - - ----- ----------------- ---------- --------  ------- ----- ----------------- ---------- --------  ------- ----- -----------------
<S>   <C>               <C>        <C>       <C>     <C>   <C>               <C>        <C>       <C>     <C>   <C>
  1                                                    1                                                    1
  2                                                    2                                                    2
  3                                                    3                                                    3
  4                                                    4                                                    4
  5                                                    5                                                    5
 
Life                                                 Life                                                 Life
 
<CAPTION>
NUMBE             CUMULATIVE COMPOUND
 OF                GROWTH   GROWTH
YEARS    AMOUNT     RATE     RATE
- - - -----  ---------- --------  -------
<S>   <C>         <C>       <C>
  1
  2
  3
  4
  5
Life
</TABLE>
<TABLE>
<CAPTION>
                                                                                                                  MFS/SUN LIFE
                                                                                                                     CAPITAL
                                                                                                                  APPRECIATION
           J.P. MORGAN SMALL COMPANY PORTFOLIO                LORD ABBETT GROWTH AND INCOME PORTFOLIO                SERIES
      ----------------------------------------------       ----------------------------------------------       -----------------
NUMBER                             CUMULATIVE COMPOUND NUMBER                           CUMULATIVE COMPOUND NUMBER
 OF                                 GROWTH   GROWTH   OF                                 GROWTH   GROWTH   OF
YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS
- - - ----- ----------------- ---------- --------  ------- ----- ----------------- ---------- --------  ------- ----- -----------------
<S>   <C>               <C>        <C>       <C>     <C>   <C>               <C>        <C>       <C>     <C>   <C>
  1                                                    1                                                    1
  2                                                    2                                                    2
  3                                                    3                                                    3
  4                                                    4                                                    4
  5                                                    5                                                    5
                                                      10
 
Life                                                 Life                                                 Life
 
<CAPTION>
NUMBE             CUMULATIVE COMPOUND
 OF                GROWTH   GROWTH
YEARS    AMOUNT     RATE     RATE
- - - -----  ---------- --------  -------
<S>   <C>         <C>       <C>
  1
  2
  3
  4
  5
Life
</TABLE>
 
- - - ----------------------------------------
*For purposes of determining these investment results, the actual investment
performance of each Fund is reflected from the date the Fund commenced
operations, although the Contracts have been offered only since February   ,
1998. No information is shown for Funds that have not commenced operations or
that have been in operation for less than one year. The charges imposed under
the Contract against the assets of the Variable Account for mortality and
expense risks and administrative expenses have been deducted. However, the
annual Account Fee is not reflected and these examples do not assume surrender
at the end of the period.
 
                                       81
<PAGE>
             NON-STANDARDIZED INVESTMENT PERFORMANCE -- continued:
$10,000 INVESTED IN                       ...WOULD HAVE GROWN TO THIS AMOUNT ON
THIS SUB-ACCOUNT UNDER A                            DECEMBER 31, 1997*
FUTURITY CONTRACT,
THIS MANY YEARS AGO...
 
<TABLE>
<CAPTION>
                                                                                                                MFS.SUN LIFE HIGH
           MFS/SUN LIFE EMERGING GROWTH SERIES               MFS/SUN LIFE GOVERNMENT SECURITIES SERIES            YIELD SERIES
      ----------------------------------------------       ----------------------------------------------       -----------------
NUMBER                             CUMULATIVE COMPOUND NUMBER                           CUMULATIVE COMPOUND NUMBER
 OF                                 GROWTH   GROWTH   OF                                 GROWTH   GROWTH   OF
YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS
- - - ----- ----------------- ---------- --------  ------- ----- ----------------- ---------- --------  ------- ----- -----------------
<S>   <C>               <C>        <C>       <C>     <C>   <C>               <C>        <C>       <C>     <C>   <C>
  1                                                    1                                                    1
  2                                                    2                                                    2
  3                                                    3                                                    3
  4                                                    4                                                    4
  5                                                    5                                                    5
                                                      10                                                   10
 
Life                                                 Life                                                 Life
 
<CAPTION>
NUMBE             CUMULATIVE COMPOUND
 OF                GROWTH   GROWTH
YEARS    AMOUNT     RATE     RATE
- - - -----  ---------- --------  -------
<S>   <C>         <C>       <C>
  1
  2
  3
  4
  5
Life
</TABLE>
<TABLE>
<CAPTION>
                                                                                                                   OCC EQUITY
             MFS/SUN LIFE MONEY MARKET SERIES                      MFS/SUN LIFE UTILITIES SERIES                    PORTFOLIO
      ----------------------------------------------       ----------------------------------------------       -----------------
NUMBER                             CUMULATIVE COMPOUND NUMBER                           CUMULATIVE COMPOUND NUMBER
 OF                                 GROWTH   GROWTH   OF                                 GROWTH   GROWTH   OF
YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS
- - - ----- ----------------- ---------- --------  ------- ----- ----------------- ---------- --------  ------- ----- -----------------
<S>   <C>               <C>        <C>       <C>     <C>   <C>               <C>        <C>       <C>     <C>   <C>
  1                                                    1                                                    1
  2                                                    2                                                    2
  3                                                    3                                                    3
  4                                                    4                                                    4
  5                                                    5                                                    5
 
Life                                                 Life                                                 Life
 
<CAPTION>
NUMBE             CUMULATIVE COMPOUND
 OF                GROWTH   GROWTH
YEARS    AMOUNT     RATE     RATE
- - - -----  ---------- --------  -------
<S>   <C>         <C>       <C>
  1
  2
  3
  4
  5
Life
</TABLE>
 
- - - ----------------------------------------
*For purposes of determining these investment results, the actual investment
performance of each Fund is reflected from the date the Fund commenced
operations, although the Contracts have been offered only since February   ,
1998. No information is shown for Funds that have not commenced operations or
that have been in operation for less than one year. The charges imposed under
the Contract against the assets of the Variable Account for mortality and
expense risks and administrative expenses have been deducted. However, the
annual Account Fee is not reflected and these examples do not assume surrender
at the end of the period.
 
                                       82
<PAGE>
             NON-STANDARDIZED INVESTMENT PERFORMANCE -- continued:
$10,000 INVESTED IN                       ...WOULD HAVE GROWN TO THIS AMOUNT ON
THIS SUB-ACCOUNT UNDER A                            DECEMBER 31, 1997*
FUTURITY CONTRACT,
THIS MANY YEARS AGO...
 
<TABLE>
<CAPTION>
            OCC SMALL CAPITALIZATION PORTFOLIO             WARBURG PINCUS INTERNATIONAL EQUITY PORTFOLIO
      ----------------------------------------------       ----------------------------------------------
NUMBER                             CUMULATIVE COMPOUND NUMBER                           CUMULATIVE COMPOUND
 OF                                 GROWTH   GROWTH   OF                                 GROWTH   GROWTH
YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS        AMOUNT     RATE     RATE
- - - ----- ----------------- ---------- --------  ------- ----- ----------------- ---------- --------  -------
<S>   <C>               <C>        <C>       <C>     <C>   <C>               <C>        <C>       <C>     <C>   <C>
  1                                                    1
  2                                                    2
  3                                                    3
  4                                                    4
  5                                                    5
                                                      10
 
Life                                                 Life
 
<CAPTION>
NUMBE
 OF
YEARS
- - - -----
<S>   <C>         <C>       <C>
  1
  2
  3
  4
  5
Life
</TABLE>
<TABLE>
<CAPTION>
      WARBURG PINCUS POST-VENTURE CAPITAL PORTFOLIO        WARBURG PINCUS SMALL COMPANY GROWTH PORTFOLIO
      ----------------------------------------------       ----------------------------------------------
NUMBER                             CUMULATIVE COMPOUND NUMBER                           CUMULATIVE COMPOUND
 OF                                 GROWTH   GROWTH   OF                                 GROWTH   GROWTH
YEARS      PERIODS        AMOUNT     RATE     RATE   YEARS      PERIODS        AMOUNT     RATE     RATE
- - - ----- ----------------- ---------- --------  ------- ----- ----------------- ---------- --------  -------
<S>   <C>               <C>        <C>       <C>     <C>   <C>               <C>        <C>       <C>     <C>   <C>
  1                                                    1
  2                                                    2
  3                                                    3
  4                                                    4
  5                                                    5
                                                      10
 
Life                                                 Life
 
<CAPTION>
NUMBE
 OF
YEARS
- - - -----
<S>   <C>         <C>       <C>
  1
  2
  3
  4
  5
Life
</TABLE>
 
- - - ----------------------------------------
*For purposes of determining these investment results, the actual investment
performance of each Fund is reflected from the date the Fund commenced
operations, although the Contracts have been offered only since February   ,
1998. No information is shown for Funds that have not commenced operations or
that have been in operation for less than one year. The charges imposed under
the Contract against the assets of the Variable Account for mortality and
expense risks and administrative expenses have been deducted. However, the
annual Account Fee is not reflected and these examples do not assume surrender
at the end of the period.
 
                                       83
<PAGE>
                        ADVERTISING AND SALES LITERATURE
 
    As set forth in the Prospectus, the Company may refer to the following
organizations (and others) in its marketing materials:
    A.M. BEST'S RATING SYSTEM is designed to evaluate the various factors
affecting the overall performance of an insurance company in order to provide an
opinion as to an insurance company's relative financial strength and ability to
meet its contractual obligations. The procedure includes both a quantitative and
qualitative review of each company.
 
    DUFF & PHELPS CREDIT RATING COMPANY's Insurance Company Claims Paying
Ability Rating is an independent evaluation by a nationally accredited rating
organization of an insurance company's ability to meet its future obligations
under the contracts and products it sells. The rating takes into account both
quantitative and qualitative factors.
 
    LIPPER VARIABLE INSURANCE PRODUCTS PERFORMANCE ANALYSIS SERVICE is a
publisher of statistical data covering the investment company industry in the
United States and overseas. Lipper is recognized as the leading source of data
on open-end and closed-end funds. Lipper currently tracks the performance of
over 5,000 investment companies and publishes numerous specialized reports,
including reports on performance and portfolio analysis, fee and expense
analysis.
 
    STANDARD & POOR's insurance claims-paying ability rating is an opinion of an
operating insurance company's financial capacity to meet obligations of its
insurance policies in accordance with their terms.
 
    VARDS (Variable Annuity Research Data Service) provides a comprehensive
guide to variable annuity contract features and historical fund performance. The
service also provides a readily understandable analysis of the comparative
characteristics and market performance of funds inclusive in variable contracts.
 
    MOODY'S Investors Services, Inc.'s insurance claims-paying rating is a
system of rating on insurance company's financial strength, market leadership,
and ability to meet financial obligations. The purpose of Moody's ratings is to
provide investors with a simple system of gradation by which the relative
quality of insurance companies may be noted.
 
    STANDARD & POOR'S INDEX--broad-based measurement of changes in stock-market
conditions based on the average performance of 500 widely held common stocks;
commonly known as the Standard & Poor's 500 (S&P 500). The selection of stocks,
their relative weightings to reflect differences in the number of outstanding
shares, and publication of the index itself are services of Standard & Poor's
Corporation, a financial advisory, securities rating, and publishing firm. The
index tracks 400 industrial company stocks, 20 transportation stocks, 40
financial company stocks, and 40 public utilities.
 
    NASDAQ-OTC Price Index--this index is based on the National Association of
Securities Dealers Automated Quotations (NASDAQ) and represents all domestic
over-the-counter stocks except those traded on exchanges and those having only
one market maker, a total of some 3,500 stocks. It is market value-weighted and
was introduced with a base of 100.00 on February 5, 1971.
 
    DOW JONES INDUSTRIAL AVERAGE (DJIA)--price-weighted average of 30 actively
traded blue chip stocks, primarily industrials, but including American Express
Company and American Telephone and Telegraph Company. Prepared and Published by
Dow Jones & Company, it is the oldest and most widely quoted of all the market
indicators. The average is quoted in points, not dollars.
 
    MORNINGSTAR, Inc. is an independent financial publisher offering
comprehensive statistical and analytical coverage of open-end and closed-end
funds and variable annuities. This coverage for mutual funds includes, among
other information, performance analysis rankings, risk rankings (e.g.
aggressive, moderate or conservative), and "style box" matrices. Style box
matrices display, for equity funds, the investment philosophy and size of the
companies in which the fund invests and, for fixed-income funds, interest rate
sensitivity and credit quality of the investment instruments.
 
    IBBOTSON ASSOCIATES, Inc. is a consulting firm that provides a variety of
historical data, including total return, capital appreciation and income, on the
stock market as well as other investment asset classes, and inflation. This
information will be used primarily for comparative purposes and to illustrate
general financial planning principles.
 
    In its advertisements and other sales literature for the Variable Account
and the Funds, the Company intends to illustrate the advantages of the Contracts
in a number of ways:
 
    DOLLAR COST AVERAGING ILLUSTRATIONS.  These illustrations will generally
discuss the price-leveling effect of making regular investments in the same
Sub-Accounts over a period of time, to take advantage of the trends in market
prices of the portfolio securities purchased by those Sub-Accounts.
 
    SYSTEMATIC WITHDRAWAL PROGRAM.  A service provided by the Company, through
which a Participant may take any distribution allowed by Code Section 401(a)(9)
in the case of Qualified Contracts, or permitted
 
                                       84
<PAGE>
under Code Section 72 in the case of Non-Qualified Contracts, by way of a series
of partial withdrawals. Withdrawals under this program may be fully or partially
includible in income and may be subject to a 10% penalty tax. Consult your tax
advisor.
 
    THE COMPANY'S OR A FUND'S CUSTOMERS.  Sales literature for the Variable
Account and the Funds may refer to the number of clients which they serve.
 
    THE COMPANY'S OR A FUND'S ASSETS, SIZE.  The Company may discuss its general
financial condition (see, for example, the references to Standard & Poor's, Duff
& Phelps and A.M. Best Company above); it may refer to its assets; it may also
discuss its relative size and/or ranking among companies in the industry or
among any sub-classification of those companies, based upon recognized
evaluation criteria. For example, at year-end 1996 the Company was the 38th
largest U.S. life insurance company based upon overall assets and its parent
company, Sun Life Assurance Company of Canada, was the 19th largest.
 
    COMPOUND INTEREST ILLUSTRATIONS.  These will emphasize several advantages of
the variable annuity contract. For example, but not by way of limitation, the
literature may emphasize the potential savings through tax deferral; the
potential advantage of the Variable Account over the fixed account; and the
compounding effect when a participant makes regular deposits to his or her
account.
 
    The Company may use hypothetical illustrations of the benefits of tax
deferral, including but not limited to the following chart:
 
    The chart below assumes an initial investment of $10,000 which remains fully
invested for the entire time period, an 8% annual return, and a 33% combined
federal and state income tax rate. It compares how three different investments
might fare over 10, 20, and 30 years. The first example illustrates an
investment in a non-tax-deferred account and assumes that taxes are paid
annually out of that account. The second example illustrates how the same
investment would grow in a tax-deferred investment, such as an annuity. And the
third example illustrates the net value of the tax-deferred investment AFTER
paying taxes on the full account value.
 
<TABLE>
<CAPTION>
    10 YEARS   20 YEARS   30 YEARS
    --------   --------   --------
 
  <C>          <C>        <C>
Non-Tax-Deferred
 Account $ 16,856 $ 28,413 $ 47,893
 
Tax-Deferred
 Account $ 21,589 $ 46,610 $100,627
 
Tax-Deferred
 Account
 After
Paying
 Taxes $ 17,765 $ 34,528  $ 70,720
</TABLE>
 
THIS ILLUSTRATION IS HYPOTHETICAL AND DOES NOT REPRESENT THE PROJECTED
PERFORMANCE OF THE SUN LIFE OF CANADA (U.S.) FUTURITY VARIABLE ANNUITY OR ANY OF
ITS INVESTMENT OPTIONS. THE ILLUSTRATION DOES NOT REFLECT THE DEDUCTION OF ANY
CHARGES OR FEES RELATED TO PORTFOLIO MANAGEMENT, MORTALITY AND EXPENSE, OR
ACCOUNT ADMINSTRATION. TAXES ON EARNINGS WITHIN AN ANNUITY ARE DUE UPON
WITHDRAWAL. WITHDRAWALS MAY ALSO BE SUBJECT TO SURRENDER CHARGES AND, IF MADE
PRIOR TO AGE 59 1/2, A 10% FEDERAL PENALTY TAX.
 
                                       85
<PAGE>
                                   SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
                                   ANNUITY SERVICE MAILING ADDRESS:
                                   RETIREMENT PRODUCTS AND SERVICES
                                   P.O. BOX 9133
                                   BOSTON, MASSACHUSETTS 02117
 
                                   TELEPHONE:
                                   Toll Free (888) 388-8748
 
                                   GENERAL DISTRIBUTOR
                                   Clarendon Insurance Agency, Inc.
                                   One Sun Life Executive Park
                                   Wellesley Hills, Massachusetts 02181
 
                                   LEGAL COUNSEL
                                   Covington & Burling
                                   1201 Pennsylvania Avenue, N.W.
                                   P.O. Box 7566
                                   Washington, D.C. 20044
 
                                   AUDITORS
                                   Deloitte & Touche LLP
                                   125 Summer Street
                                   Boston, Massachusetts 02110
 
[INSERT PRODUCT CODE]

<PAGE>
                               PART II
                INFORMATION NOT REQUIRED IN PROSPECTUS.

Item 14. Other Expenses of Issuance and Distribution

     The expenses of the issuance and distribution of the Contracts, other 
than any underwriting discounts and commissions, will be as follows:

        Securities and Exchange 
           Commission Registration Fees           $118,000
        Printing and Engraving                      50,000*
        Accounting Fees and Expenses                 5,000*
        Legal Fees and Expenses                     10,000*
                                                  --------
                                                  $183,000*
   * Estimate

Item 15. Indemnification of Directors and Officers

     Article 8 of the By-Laws of Sun Life Assurance Company of Canada (U.S.) 
provides for indemnification of directors and officers as follows:

    "Section 8.01 (a).  Every person who is or was a director, officer or 
employee of this corporation or of any other corporation which he served at 
the request of this corporation and in which this corporation owns or owned 
shares of capital stock or of which it is or was a creditor shall have a 
right to be indemnified by this corporation against all liability and 
reasonable expenses incurred by him in connection with or resulting from any 
claim, action, suit or proceeding in which he may become involved as a party 
or otherwise by reason of his being or having been a director, officer or 
employee of this corporation or such other corporation, provided (1) said 
claim, action, suit or proceeding shall be prosecuted to a final 
determination and he shall be vindicated on the merits, or (2) in the absence 
of such a final determination vindicating him on the merits, the board of 
directors shall determine that he acted in good faith and in a manner he 
reasonably believed to be in or not opposed to the best interests of the 
corporation, and, with respect to any criminal action or proceeding, had no 
reasonable cause to believe his conduct was unlawful; said determination to 
be made by the board of directors acting through a quorum of disinterested 
directors, or in its absence on the opinion of counsel.

    (b)  For purposes of the preceding subsection: (1) "liability and 
reasonable expenses" shall include but not be limited to reasonable counsel 
fees and disbursements, amounts of any judgment, fine or penalty, and 
reasonable amounts paid in settlement; (2) "claim, action, suit or 
proceeding" shall  include every such  claim, action, suit or proceeding, 
whether civil or criminal, derivative or otherwise, administrative, judicial 
or legislative, any appeal relating thereto, and shall include any reasonable 
apprehension or threat of such a claim, action, suit or proceeding; (3) a 
settlement, plea of nolo contendere, consent judgment, adverse civil 
judgment, or conviction shall not of itself create a presumption that the 
conduct of the person seeking indemnification did not meet the standard of 
conduct set forth in subsection (a)(2) hereof.

                                     II-1


<PAGE>
      (c)  Notwithstanding the foregoing, the following limitations shall 
apply with respect to any action by or in the right of the Corporation: (1) 
no indemnification shall be made in respect of any claim, issue or matter as 
to which the person seeking indemnification shall have been adjudged to be 
liable for negligence or misconduct in the performance of his duty to the 
corporation unless and only to the extent that the Court of Chancery of the 
State of Delaware or the court in which such action or suit was brought shall 
determine upon application that, despite the adjudication of liability but in 
view of all the circumstances of the case, such person is fairly and  
reasonably entitled to indemnity for such expenses which the Court of 
Chancery or such other court shall deem proper; and (2) indemnification shall 
extend only to reasonable expenses, including reasonable counsel's fees and 
disbursements.

    (d)  The right of indemnification shall extend to any person otherwise 
entitled to it under this by-law whether or not that person continues to be a 
director, officer or employee of this corporation or such other corporation 
at the time such liability or expense shall be incurred.  The right of 
indemnification shall extend to the legal representative and heirs of any 
person otherwise entitled to indemnification.  If a person meets the 
requirements of this by-law with respect to some matters in a claim, action, 
suit or proceeding, but not with respect to others, he shall be entitled to 
indemnification as the former.  Advances against liability and expenses may 
be made by the corporation on terms fixed by the board of directors subject 
to an obligation to repay if indemnification proves unwarranted.

    (e)  This by-law shall not exclude any other rights of indemnification or 
other rights to which any director, officer or employee may be entitled to by 
contract, vote of the stockholders or as a matter of law. If any clause, 
provision or application of this section shall be determined to be invalid, 
the other clauses, provisions or applications of this section shall not be 
affected but shall remain in full force and effect.  The provisions of this 
by-law shall be applicable to claims, actions, suits or proceedings made or 
commenced after the adoption hereof, whether arising from acts or omissions 
to act occurring before or after the adoption hereof.

    (f)  Nothing contained in this by-law shall be construed to protect any 
director or officer of the corporation against any liability to the 
corporation or its security holders to which he would otherwise be subject by 
reason of wilful misfeasance, bad faith, gross negligence or reckless 
disregard of the duties involved in the conduct of his office."

                                     II-2

<PAGE>

Item 16. Exhibits

Exhibits:

Exhibit
Number                Description             Method of Filing

 1         Underwriting Agreement                *
 3(a)      Certificate of Incorporation          **
 3(b)      By-laws                               **
 4(a)      Combination Fixed/Variable Group
             Annuity Contract                    **
 4(b)      Certificate to be used in con-
             nection with Contract filed as
             Exhibit 4(a)                        **
 5         Opinion re: Legality                  Filed Herewith
23         Consents of Experts and Counsel       
           (a) Independent Auditors' Consent     Filed Herewith
           (b) Consent of Counsel                Filed Herewith
24         Powers of Attorney                    Filed Herewith
27         Financial Data Schedule               Filed Herewith

*      Incorporated by reference from Pre-effective Amendment No. 1 to the 
       Registration Statement on Form N-4 of Sun Life of Canada (U.S.)
       Variable Account F, File No. 333-37907.

**     Incorporated by reference from the Registration Statement on Form N-4 
       of Sun Life of Canada (U.S.) Variable Account F, File No. 333-37907


Item 17. Undertakings

      (a)     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, represent a fundamental change in the information set 
         forth in the registration statement;

                                     II-3

<PAGE>
              (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;

              Provided, however, that paragraphs (a)(1)(i) and a(1)(ii) do 
         not apply if the registration statement is on Form S-3 or Form S-8, 
         and the information required to be included in a post-effective 
         amendment by those paragraphs is contained in periodic reports filed 
         by the registrant pursuant to Section 13 or Section 15(d) of the 
         Securities Exchange Act of 1934 that are incorporated by reference 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 bona 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.

    The undersigned registrant hereby undertakes 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.

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

                                     II-4

<PAGE>
                                  SIGNATURES


     Pursuant to the requirements of the Securities Act of 1933, the 
Registrant, Sun Life Assurance Company of Canada (U.S.), certifies that it 
has reasonable grounds to believe that it meets all of the requirements for 
filing on Form S-2 and has duly caused this Registration Statement on Form 
S-2 to be signed on its behalf by the undersigned, thereunto duly authorized, 
in the Town of Wellesley, Commonwealth of Massachusetts, on the 9th day of 
February, 1998.

                                  Sun Life Assurance Company of
                                  Canada (U.S.)
                                   
                                  (Registrant)


                                  By:*    /s/ JOHN D. McNEIL   
                                       -------------------------  
                                              John D. McNeil
                                              Chairman


    Pursuant to the requirements of the Securities Act of 1933, this Form S-2 
Registration Statement has been signed by the following persons in the 
capacities and on the dates indicated.

    SIGNATURE                           TITLE                    DATE    


*  /s/ JOHN D. McNEIL            Chairman and Director
- - - --------------------------     (Principal Executive Officer)  February 9, 1998
   John D. McNeil
 
*  /s/  ROBERT P. VROLYK          Vice President and Actuary
- - - ----------------------------       (Principal Financial
     Robert P. Vrolyk              & Accounting Officer)      February 9, 1998

*  /s/ RICHARD B. BAILEY                Director              February  9, 1998
- - - ----------------------------
     Richard B. Bailey

- - - ----------------------------
* By Margaret Hankard pursuant to Power of Attorney filed herewith.
                                     II-5

<PAGE>

    SIGNATURE                           TITLE                    DATE    


*  /s/ M. COLYER CRUM
- - - -------------------------------         Director            February 9, 1998
       M. Colyer Crum

*   /s/ DONALD A. STEWART               President and       February 9, 1998
- - - -------------------------------         Director
      Donald A. Stewart

*   /s/ DAVID D. HORN                    Director              February 9, 1998
- - - --------------------------------    
        David D. Horn                   

                                         Director
- - - --------------------------------
        John S. Lane

                                         Director
- - - ---------------------------------
     Angus A. MacNaughton

                                   Senior Vice President
- - - --------------------------------    and Deputy General      
        S. Caesar Raboy             Manager and Director

*   /s/ C. JAMES PRIEUR            Senior Vice President,      February 9, 1998
- - - -----------------------             General Manager and
     C. James Prieur                Director

* By Margaret Hankard pursuant to Power of Attorney filed herewith.


                                     II-6

<PAGE>
                                  EXHIBIT INDEX

Exhibit
Number                                              

5        Opinion of Counsel
23(a)    Independent Auditors' Consent
23(b)    Consent of Counsel
24       Powers of Attorney
27       Financial Data Schedule
- - - -------------------------


                                  II-7



<PAGE>
                                                        EXHIBIT 5

Sun Life Assurance Company of Canada (U.S.)
Sun Life of Canada (U.S.) Variable Account F
One Sun Life Executive Park
Wellesley Hills, Massachusetts 02181

        Re: Registration Statement on S-2

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

Gentlemen and Ladies:

        I have acted as counsel to Sun Life Assurance Company of Canada 
(U.S.) (the "Company") and Sun Life of Canada (U.S.) Variable Account F (the 
"Account") in connection with the above-captioned registration statement (the 
"Registration Statement") with respect to the registration of certain annuity 
contracts (the "Contracts") with the Securities and Exchange Commission under 
the Securities Act of 1933, as amended. In giving this opinion, I have 
examined the Registration Statement and have examined such other documents 
and reviewed such questions of Delaware law as I considered necessary and 
appropriate. Based on such examination and review it is my opinion that:

       1. The Company is a corporation duly organized and validly existing 
under the laws of the State of Delaware.

       2. The Account is a duly organized and existing separate account 
established by the Company pursuant to the provisions of 18 Delaware Code 
Section 2932.

       3. The Contracts when issued in the manner described in the 
Registration Statement will be validly issued and will represent binding 
obligations of the Company and the Account under Delaware law.

       I hereby consent to the filing of this opinion as an exhibit to the 
Registration Statement and to reference to this opinion under the caption 
"Legal Matters" in the prospectus constituting a part of the Registration 
Statement.

                                         Very truly yours,

                                         /s/ Margaret Sears Mead, Esq.

February 6, 1998
 

<PAGE>
                                                Exhibit 23(a)

                    INDEPENDENT AUDITORS' CONSENT

     We consent to the use in the Registration Statement of Sun Life Assurance
Company of Canada (U.S.) on Form S-2 of our report dated February 5, 1998 
accompanying the statutory financial statements of Sun Life Assurance Company 
of Canada (U.S.) appearing in the Prospectus, which is part of such 
Registration Statement, and to the incorporation by reference of our report 
dated February 3, 1997 appearing in the Annual Report on Form 10-K of Sun Life 
Assurance Company of Canada (U.S.) for the year ended December 31, 1996. We 
also consent to the reference to us under the heading "Accountants" in such 
Prospectus.

DELOITTE & TOUCHE LLP
Boston, Massachusetts

February 9, 1998



<PAGE>
                                               Exhibit 23(b)


                          CONSENT OF COUNSEL


     I hereby consent to the reference to me in the Registration Statement on
Form S-2 of Sun Life Assurance Company of Canada (U.S.) under the caption
"Legal Matters" in the Prospectus contained therein.

                                      MARGARET SEARS MEAD, ESQ.


February 6, 1998



<PAGE>
                                                                    Exhibit 24



                  SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

                               POWER OF ATTORNEY


      KNOW ALL MEN BY THESE PRESENTS that Robert P. Vrolyk, whose signature 
appears below, constitutes and appoints Margaret E. Hankard, Margaret Sears 
Mead and David N. Brown, and each of them, his attorneys-in-fact, each with 
the power of substitution, for him in any and all capacities, to sign a 
Registration Statement on Form S-2 of Sun Life of Canada (U.S.), and any 
amendments thereto, and to file the same, with exhibits thereto, and other 
documents in connection therewith, with the Securities and Exchange 
Commission, hereby ratifying and confirming all that each of said 
attorneys-in-fact or his substitute or substitutes, may do or cause to be 
done by virtue hereof.

                                       /s/ Robert P. Vrolyk
                                       -------------------------
                                       Robert P. Vrolyk


February 5, 1998


<PAGE>


                  SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

                               POWER OF ATTORNEY


      KNOW ALL MEN BY THESE PRESENTS that David D. Horn, whose signature 
appears below, constitutes and appoints Margaret E. Hankard, Margaret Sears 
Mead and David N. Brown, and each of them, his attorneys-in-fact, each with 
the power of substitution, for him in any and all capacities, to sign a 
Registration Statement on Form S-2 of Sun Life of Canada (U.S.), and any 
amendments thereto, and to file the same, with exhibits thereto, and other 
documents in connection therewith, with the Securities and Exchange 
Commission, hereby ratifying and confirming all that each of said 
attorneys-in-fact or his substitute or substitutes, may do or cause to be 
done by virtue hereof.

                                       /s/ David D. Horn
                                       -------------------------
                                       David D. Horn


February 5, 1998


<PAGE>


                  SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

                               POWER OF ATTORNEY


      KNOW ALL MEN BY THESE PRESENTS that M. Colyer Crum, whose signature 
appears below, constitutes and appoints Margaret E. Hankard, Margaret Sears 
Mead and David N. Brown, and each of them, his attorneys-in-fact, each with 
the power of substitution, for him in any and all capacities, to sign a 
Registration Statement on Form S-2 of Sun Life of Canada (U.S.), and any 
amendments thereto, and to file the same, with exhibits thereto, and other 
documents in connection therewith, with the Securities and Exchange 
Commission, hereby ratifying and confirming all that each of said 
attorneys-in-fact or his substitute or substitutes, may do or cause to be 
done by virtue hereof.

                                       /s/ M. Colyer Crum
                                       -------------------------
                                       M. Colyer Crum


February 5, 1998


<PAGE>


                  SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

                               POWER OF ATTORNEY


      KNOW ALL MEN BY THESE PRESENTS that C. James Prieur, whose signature 
appears below, constitutes and appoints Margaret E. Hankard, Margaret Sears 
Mead and David N. Brown, and each of them, his attorneys-in-fact, each with 
the power of substitution, for him in any and all capacities, to sign a 
Registration Statement on Form S-2 of Sun Life of Canada (U.S.), and any 
amendments thereto, and to file the same, with exhibits thereto, and other 
documents in connection therewith, with the Securities and Exchange 
Commission, hereby ratifying and confirming all that each of said 
attorneys-in-fact or his substitute or substitutes, may do or cause to be 
done by virtue hereof.

                                       /s/ C. James Prieur
                                       -------------------------
                                       C. James Prieur


February 5, 1998


<PAGE>



                  SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

                               POWER OF ATTORNEY


      KNOW ALL MEN BY THESE PRESENTS that John D. McNeil, whose signature 
appears below, constitutes and appoints Margaret E. Hankard, Margaret Sears 
Mead and David N. Brown, and each of them, his attorneys-in-fact, each with 
the power of substitution, for him in any and all capacities, to sign a 
Registration Statement on Form S-2 of Sun Life of Canada (U.S.), and any 
amendments thereto, and to file the same, with exhibits thereto, and other 
documents in connection therewith, with the Securities and Exchange 
Commission, hereby ratifying and confirming all that each of said 
attorneys-in-fact or his substitute or substitutes, may do or cause to be 
done by virtue hereof.

                                       /s/ John D. McNeil
                                       -------------------------
                                       John D. McNeil


February 5, 1998


<PAGE>



                  SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

                               POWER OF ATTORNEY


      KNOW ALL MEN BY THESE PRESENTS that Richard B. Bailey, whose signature 
appears below, constitutes and appoints Margaret E. Hankard, Margaret Sears 
Mead and David N. Brown, and each of them, his attorneys-in-fact, each with 
the power of substitution, for him in any and all capacities, to sign a 
Registration Statement on Form S-2 of Sun Life of Canada (U.S.), and any 
amendments thereto, and to file the same, with exhibits thereto, and other 
documents in connection therewith, with the Securities and Exchange 
Commission, hereby ratifying and confirming all that each of said 
attorneys-in-fact or his substitute or substitutes, may do or cause to be 
done by virtue hereof.

                                       /s/ Richard B. Bailey
                                       -------------------------
                                       Richard B. Bailey


February 5, 1998


<PAGE>



                  SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

                               POWER OF ATTORNEY


      KNOW ALL MEN BY THESE PRESENTS that Donald A. Stewart, whose signature 
appears below, constitutes and appoints Margaret E. Hankard, Margaret Sears 
Mead and David N. Brown, and each of them, his attorneys-in-fact, each with 
the power of substitution, for him in any and all capacities, to sign a 
Registration Statement on Form S-2 of Sun Life of Canada (U.S.), and any 
amendments thereto, and to file the same, with exhibits thereto, and other 
documents in connection therewith, with the Securities and Exchange 
Commission, hereby ratifying and confirming all that each of said 
attorneys-in-fact or his substitute or substitutes, may do or cause to be 
done by virtue hereof.

                                       /s/ Donald A. Stewart
                                       -------------------------
                                       Donald A. Stewart


February 5, 1998


<TABLE> <S> <C>

<PAGE>
<ARTICLE> 7
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<DEBT-HELD-FOR-SALE>                                 0
<DEBT-CARRYING-VALUE>                        1,910,699
<DEBT-MARKET-VALUE>                          2,028,167
<EQUITIES>                                     117,229
<MORTGAGE>                                     684,035
<REAL-ESTATE>                                  100,901
<TOTAL-INVEST>                               2,868,580
<CASH>                                         544,418
<RECOVER-REINSURE>                                   0
<DEFERRED-ACQUISITION>                               0
<TOTAL-ASSETS>                              15,927,045
<POLICY-LOSSES>                              2,190,490
<UNEARNED-PREMIUMS>                                  0
<POLICY-OTHER>                                   2,675
<POLICY-HOLDER-FUNDS>                        1,450,705
<NOTES-PAYABLE>                                110,000
                                0
                                          0
<COMMON>                                         5,900
<OTHER-SE>                                     826,795
<TOTAL-LIABILITY-AND-EQUITY>                15,927,045
                                   2,427,613
<INVESTMENT-INCOME>                            271,415
<INVESTMENT-GAINS>                              30,109
<OTHER-INCOME>                                  86,128
<BENEFITS>                                   2,469,215
<UNDERWRITING-AMORTIZATION>                          0
<UNDERWRITING-OTHER>                           206,066
<INCOME-PRETAX>                                139,984
<INCOME-TAX>                                    10,742
<INCOME-CONTINUING>                            129,242
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   129,242
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0
<RESERVE-OPEN>                                       0
<PROVISION-CURRENT>                                  0
<PROVISION-PRIOR>                                    0
<PAYMENTS-CURRENT>                                   0
<PAYMENTS-PRIOR>                                     0
<RESERVE-CLOSE>                                      0
<CUMULATIVE-DEFICIENCY>                              0
        

</TABLE>


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission