<PAGE>
Rule 424(b)(3)
File No. 333-39306
SUPPLEMENT DATED SEPTEMBER 14, 2000
TO
PROFILE DATED JUNE 26, 2000, AS SUPPLEMENTED ("PROFILE")
AND
PROSPECTUS DATED JUNE 26, 2000, AS SUPPLEMENTED ("PROSPECTUS")
FOR
MFS REGATTA ACCESS
VARIABLE AND FIXED ANNUITY
ISSUED BY SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
THE FOLLOWING CORRECTION IS MADE TO THE PROFILE UNDER THE HEADING "OPTIONAL
DEATH BENEFIT RIDERS" UNDER SECTION 9 ("DEATH BENEFIT").
- REPLACE THE TWO PARAGRAPHS UNDER THE SUBHEADING "EARNINGS ENHANCEMENT
RIDER" WITH THE FOLLOWING PARAGRAPH:
If you elect the Earnings Enhancement Rider, the death benefit will be the
greatest of any of the death benefit amounts payable under the "Basic Death
Benefit" (above), plus the "earnings enhancement amount." The "earnings
enhancement amount" is determined according to your age on your Contract Date:
- If you are 69 or younger on your Contract Date, the "earnings enhancement
amount" will be equal to 40% of the lesser of your net purchase payments or
your Account Value minus net purchase payments, calculated as of the Death
Benefit Date.
- If you are between the ages of 70 and 79 on your Contract Date, the
"earnings enhancement amount" will be equal to 25% of the lesser of your
net purchase payments or your Account Value minus net purchase payments,
calculated as of the Death Benefit Date.
THE FOLLOWING CORRECTION IS MADE TO THE PROSPECTUS UNDER THE HEADING "OPTIONAL
DEATH BENEFIT RIDERS."
- REPLACE THE FIRST TWO PARAGRAPHS UNDER THE SUBHEADING "EARNINGS ENHANCEMENT
RIDER" WITH THE FOLLOWING PARAGRAPH:
Under this rider, the death benefit will be the greatest of any of the death
benefit amounts payable under the "Basic Death Benefit" (above), plus the
"earnings enhancement amount." The "earnings enhancement amount" is determined
according to your age on your Contract Date:
- If you are 69 or younger on your Contract Date, the "earnings enhancement
amount" will be equal to 40% of the lesser of your Net Purchase Payments or
your Account Value minus Net Purchase Payments, calculated as of the Death
Benefit Date.
<PAGE>
- If you are between the ages of 70 and 79 on your Contract Date, the
"earnings enhancement amount" will be equal to 25% of the lesser of your
Net Purchase Payments or your Account Value minus Net Purchase Payments,
calculated as of the Death Benefit Date.
THE FOLLOWING CORRECTION IS MADE TO THE PROFILE UNDER THE HEADING "OPTIONAL
DEATH BENEFIT RIDERS" UNDER SECTION 9 ("DEATH BENEFITS") AND TO THE PROSPECTUS
UNDER THE HEADING "OPTIONAL DEATH BENEFIT RIDERS."
- REPLACE ITEMS 2), 3) AND 4) UNDER THE SUBHEADING "SELECTING MULTIPLE DEATH
BENEFIT RIDERS" WITH THE FOLLOWING ITEMS:
2) MAXIMUM ANNIVERSARY ACCOUNT VALUE RIDER COMBINED WITH EARNINGS
ENHANCEMENT RIDER: The death benefit will equal the death benefit
under the Maximum Anniversary Account Value Rider, PLUS the "earnings
enhancement amount." The "earnings enhancement amount" is calculated
using the Account Value before the application of the Maximum
Anniversary Account Value Rider.
3) EARNINGS ENHANCEMENT RIDER COMBINED WITH 5% PREMIUM ROLL-UP RIDER :
The death benefit will equal the death benefit under the 5% Premium
Roll-Up Rider, PLUS the "earnings enhancement amount." The "earnings
enhancement amount" is calculated using the Account Value before the
application of the 5% Premium Roll-Up Rider.
4) MAXIMUM ANNIVERSARY ACCOUNT VALUE RIDER, THE 5% PREMIUM ROLL-UP RIDER
AND THE EARNINGS ENHANCEMENT RIDER: The death benefit will equal the
GREATER of the death benefit under the Maximum Anniversary Account
Value Rider or the death benefit under the 5% Premium Roll-Up Rider,
PLUS the "earnings enhancement amount." The "earnings enhancement
amount" is calculated using the Account Value before the application
of the 5% Premium Roll-Up Rider and the Maximum Anniversary Account
Value Rider.
THIS SUPPLEMENT IS NOT VALID UNLESS ACCOMPANIED OR PRECEDED BY THE CURRENT
PROSPECTUS OF THE MFS REGATTA ACCESS VARIABLE AND FIXED ANNUITY, DATED JUNE 26,
2000, AS SUPPLEMENTED, AND THE CURRENT PROSPECTUS OF THE MFS/SUN LIFE SERIES
TRUST. THIS SUPPLEMENT AND THE PROSPECTUSES SHOULD BE READ AND RETAINED FOR
FURTHER REFERENCE.
ACCESSUPP-2 9/00
<PAGE>
Rule 424(b)(3)
File No. 333-39306
SUPPLEMENT DATED SEPTEMBER 14, 2000
TO
PROFILE DATED JUNE 26, 2000, AS SUPPLEMENTED ("PROFILE")
AND
PROSPECTUS DATED JUNE 26, 2000, AS SUPPLEMENTED ("PROSPECTUS")
FOR
FUTURITY FOCUS II
VARIABLE AND FIXED ANNUITY
ISSUED BY SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)
THE FOLLOWING CORRECTION IS MADE TO THE PROFILE UNDER THE HEADING "OPTIONAL
DEATH BENEFIT RIDERS" UNDER SECTION 9 ("DEATH BENEFIT").
- REPLACE THE TWO PARAGRAPHS UNDER THE SUBHEADING "EARNINGS ENHANCEMENT
RIDER" WITH THE FOLLOWING PARAGRAPH:
If you elect the Earnings Enhancement Rider, the death benefit will be the
greatest of any of the death benefit amounts payable under the "Basic Death
Benefit" (above), plus the "earnings enhancement amount." The "earnings
enhancement amount" is determined according to your age on your Contract Date:
- If you are 69 or younger on your Contract Date, the "earnings enhancement
amount" will be equal to 40% of the lesser of your net purchase payments or
your Account Value minus net purchase payments, calculated as of the Death
Benefit Date.
- If you are between the ages of 70 and 79 on your Contract Date, the
"earnings enhancement amount" will be equal to 25% of the lesser of your
net purchase payments or your Account Value minus net purchase payments,
calculated as of the Death Benefit Date.
THE FOLLOWING CORRECTION IS MADE TO THE PROSPECTUS UNDER THE HEADING "OPTIONAL
DEATH BENEFIT RIDERS."
- REPLACE THE FIRST TWO PARAGRAPHS UNDER THE SUBHEADING "EARNINGS ENHANCEMENT
RIDER" WITH THE FOLLOWING PARAGRAPH:
Under this rider, the death benefit will be the greatest of any of the death
benefit amounts payable under the "Basic Death Benefit" (above), plus the
"earnings enhancement amount." The "earnings enhancement amount" is determined
according to your age on your Contract Date:
- If you are 69 or younger on your Contract Date, the "earnings enhancement
amount" will be equal to 40% of the lesser of your Net Purchase Payments or
your Account Value minus Net Purchase Payments, calculated as of the Death
Benefit Date.
<PAGE>
- If you are between the ages of 70 and 79 on your Contract Date, the
"earnings enhancement amount" will be equal to 25% of the lesser of your
Net Purchase Payments or your Account Value minus Net Purchase Payments,
calculated as of the Death Benefit Date.
THE FOLLOWING CORRECTION IS MADE TO THE PROFILE UNDER THE HEADING "OPTIONAL
DEATH BENEFIT RIDERS" UNDER SECTION 9 ("DEATH BENEFITS") AND TO THE PROSPECTUS
UNDER THE HEADING "OPTIONAL DEATH BENEFIT RIDERS."
- REPLACE ITEMS 2), 3) AND 4) UNDER THE SUBHEADING "SELECTING MULTIPLE DEATH
BENEFIT RIDERS" WITH THE FOLLOWING ITEMS:
2) MAXIMUM ANNIVERSARY ACCOUNT VALUE RIDER COMBINED WITH EARNINGS
ENHANCEMENT RIDER: The death benefit will equal the death benefit
under the Maximum Anniversary Account Value Rider, PLUS the "earnings
enhancement amount." The "earnings enhancement amount" is calculated
using the Account Value before the application of the Maximum
Anniversary Account Value Rider.
3) EARNINGS ENHANCEMENT RIDER COMBINED WITH 5% PREMIUM ROLL-UP RIDER :
The death benefit will equal the death benefit under the 5% Premium
Roll-Up Rider, PLUS the "earnings enhancement amount." The "earnings
enhancement amount" is calculated using the Account Value before the
application of the 5% Premium Roll-Up Rider.
4) MAXIMUM ANNIVERSARY ACCOUNT VALUE RIDER, THE 5% PREMIUM ROLL-UP RIDER
AND THE EARNINGS ENHANCEMENT RIDER: The death benefit will equal the
GREATER of the death benefit under the Maximum Anniversary Account
Value Rider or the death benefit under the 5% Premium Roll-Up Rider,
PLUS the "earnings enhancement amount." The "earnings enhancement
amount" is calculated using the Account Value before the application
of the 5% Premium Roll-Up Rider and the Maximum Anniversary Account
Value Rider.
THIS SUPPLEMENT IS NOT VALID UNLESS ACCOMPANIED OR PRECEDED BY THE CURRENT
PROSPECTUS OF THE FUTURITY FOCUS II VARIABLE AND FIXED ANNUITY, DATED JUNE 26,
2000, AS SUPPLEMENTED, AND THE CURRENT FUND PROSPECTUSES. THIS SUPPLEMENT AND
THE PROSPECTUSES SHOULD BE READ AND RETAINED FOR FURTHER REFERENCE.
FUT366
