[Code of Federal Regulations]
[Title 26, Volume 5]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 26CFR1.401(a)-15]

[Page 72-73]
 
                       TITLE 26--INTERNAL REVENUE
 
    CHAPTER I--INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY 
                               (CONTINUED)
 
PART 1_INCOME TAXES--Table of Contents
 
Sec. 1.401(a)-15  Requirement that plan benefits are not decreased on 
account of certain Social Security increases.

    (a) In general. Under section 401(a)(15), a trust which is part of a 
plan to which section 411 applies (without regard to section 411(e)(2)) 
is not qualified under section 401 unless, under the plan of which such 
trust is a part:
    (1) Benefit being received by participant or beneficiary. A benefit 
(including a death or disability benefit) being received under the plan 
by a participant or beneficiary (other than a participant to whom 
subparagraph (2)(ii) of this paragraph applies, or a beneficiary of such 
a participant) is not decreased by reason of any post-separation social 
security benefit increase effective after the later of--
    (i) September 2, 1974, or
    (ii) The date of first receipt of any retirement benefit, death 
benefit, or disability benefit under the plan by the participant or by a 
beneficiary of the participant (whichever receipt occurs first).
    (2) Benefit to which participant separated from service has 
nonforfeitable right. In the case of a benefit to which a participant 
has a nonforfeitable right under such plan--
    (i) If such participant is separated from service and does not 
subsequently

[[Page 73]]

return to service and resume participation in the plan, such benefit is 
not decreased by reason of any post-separation social security benefit 
increase effective after the later of September 2, 1974, or separation 
from service, or
    (ii) If such participant is separated from service and subsequently 
returns to service and resumes participation in the plan, such benefit 
is not decreased by reason of any post-separation social security 
benefit increase effective after September 2, 1974, which occurs during 
separation from service and which would decrease such benefit to a level 
below the level of benefits to which he would have been entitled had he 
not returned to service after his separation.
    (b) Post-separation social security benefit increase. For purposes 
of this section, the term ``post-separation social security benefit 
increase'' means, with respect to a participant or a beneficiary of the 
participant, an increase in a benefit level or wage base under title II 
of the Social Security Act (whether such increase is a result of an 
amendment of such title II or is a result of the application of the 
provisions of such title II) occurring after the earlier of such 
participant's separation from service or commencement of benefits under 
the plan.
    (c) Illustrations. The provisions of paragraphs (a) and (b) of this 
section may be illustrated by the following examples:

    Example (1). A plan to which section 401(a)(15) applies provides an 
annual benefit at the normal retirement age, 65, in the form of a stated 
benefit formula amount less a specified percentage of the primary 
insurance amount payable under title II of the Social Security Act. The 
plan provides no early retirement benefits. In the case of a participant 
who separates from service before age 65 with a nonforfeitable right to 
a benefit under the plan, the plan defines the primary insurance amount 
as the amount which the participant is entitled to receive under title 
II of the Social Security Act at age 65, multiplied by the ratio of the 
number of years of service with the employer to the number of years of 
service the participant would have had if he had worked for the employer 
until age 65. The plan does not satisfy the requirements of section 
401(a)(15), because social security increases that occur after a 
participant's separation from service will reduce the benefit the 
participant will receive under the plan.
    Example (2). A plan to which section 401(a)(15) applies provides an 
annual benefit at the normal retirement age, 65, in the form of a stated 
benefit formula amount less a specified percentage of the primary 
insurance amount payable under title II of the Social Security Act. The 
plan provides no early retirement benefits. In the case of a participant 
who separates from service before age 65 with a nonforfeitable right to 
a benefit under the plan, the plan defines the primary insurance amount 
as the amount which the participant is entitled to receive under title 
II of the Social Security Act at age 65 based upon the assumption that 
he will continue to receive until reaching age 65 compensation which 
would be treated as wages for purposes of the Social Security Act at the 
same rate as he received such compensation at the time he separated from 
service, but determined without regard to any post-separation social 
security benefit increase, multiplied by the ratio of the number of 
years of service with the employer to the number of years of service the 
participant would have had if he had worked for the employer until age 
65. The plan satisfies the requirements of section 401(a)(15), because 
social security increases that occur after a participant's separation 
from service will not reduce the benefit the participant will receive 
under the plan.

    (d) Other Federal or State laws. To the extent applicable, the rules 
discussed in this section will govern classifications under a plan 
supplementing the benefits provided by other Federal or State laws, such 
as the Railroad Retirement Act of 1937. See section 206(b) of the 
Employee Retirement Income Security Act of 1974 (Public Law 93-406, 88 
Stat. 864).
    (e) Effect on prior law. Nothing in this section shall be construed 
as amending or modifying the rules applicable to post-separation social 
security increases prior to September 2, 1974. See paragraph (e) of 
Sec. 1.401-3.
    (f) Effective date. Section 401(a)(15) and this section shall apply 
to a plan only with respect to plan years to which section 411 (relating 
to minimum vesting standards) is applicable to the plan without regard 
to section 411(e)(2).

[T.D. 7434, 41 FR 42650, Sept. 28, 1976]