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PART II. TIME FOR AMENDING

SECTION 4. THE REMEDIAL

Internal Revenue Bulletin 1997-33 · 2026-10-03 edition · updated 2026-10-04 · United States

AMENDMENT PERIOD UNDER SECTION 401(B)

.01 Section 401(b) provides a remedial amendment period during which a plan may be amended retroactively, under certain circumstances, to comply with the Code’s qualification requirements. Temporary and proposed amendments to the regulations under § 401(b) were published in the Federal Register on August 1, 1997. Section 1.401(b)–1(f) of the regulations grants the Commissioner the discretion to extend the remedial amendment period. Absent such an extension, however, the remedial amendment period is generally determined as described below.

.02 Section 1.401(b)–1 provides that a plan that fails to satisfy the requirements of § 401(a) solely as a result of a disqualifying provision defined under § 1.401(b)–1(b) need not be amended to comply with those requirements until the last day of the remedial amendment period with respect to the disqualifying provision, provided the amendment is made retroactively effective to the beginning of the remedial amendment period. Under § 1.401(b)–1T(b)(3), a disqualifying provision includes a plan provision designated, at the Commissioner’s discretion, as a disqualifying provision that either (i) results in the failure of the plan to satisfy the qualification requirements of the Code by reason of a change in those requirements; or (ii) is integral to a qualification requirement of the Code that has been changed. For this purpose, § 1.401(b)– 1T(c)(1) provides that a disqualifying provision includes the absence from a plan of a provision required by or, if applicable, integral to the applicable change in the qualification requirements of the Code, if the plan was in effect on the date the change in those requirements became effective with respect to the plan.

.03 For a disqualifying provision described in § 1.401(b)–1T(b)(3), the remedial amendment period generally begins with the date on which the change becomes effective with respect to the plan or, in the case of a provision that is integral to a qualification requirement that has been changed, the first day on which the plan was operated in accordance with the provision as amended. The remedial amendment period for a disqualifying provision described in §1.401(b)–1T(b)(3) generally ends with the later of (1) the due date (including extensions) for filing the income tax return for the employer’s taxable year that includes the date on which the remedial amendment period begins or (2) the last day of the plan year that includes the date on which the remedial amendment period begins. A plan maintained by more than one employer need not be amended until the last day of the tenth month following the last day of the plan year in which the remedial amendment period begins.

.04 Section 1.401(b)–1 also provides that in the case of a new plan which contains (or fails to contain) a provision that causes the plan to fail to satisfy the requirements of § 401(a) as of the date the plan is put into effect, the plan need not be amended to comply with those requirements until the later of the due date including extensions for filing the employer’s tax return for the taxable year in which the plan is put into effect or the last day of the plan year in which the plan is put into effect. A new plan maintained by more than one employer need not be amended until the last day of the tenth month following the last day of the plan year in which falls the date the plan is put into effect.

.05 Section 1.401(b)–1 also provides that in the case of an amendment to an existing plan which causes the plan to fail to satisfy the requirements of § 401(a) as of the date the amendment is adopted or effective (whichever is earlier), the plan need not be amended to correct the amendment until the later of the due date for filing the employer’s tax return (including extensions) for the taxable year in which the amendment is adopted or effective (whichever is later) or the last day of the plan year in which the amendment is adopted or effective (whichever is later). In the case of an amendment to an exist

1997–33 I.R.B. 53 August 18, 1997

cation requirement changed by SBJPA, but only to the extent the change in the qualification requirement is effective before the first day of the first plan year beginning on or after January 1, 1999, and the plan provision as amended is effective prior to the end of the remedial amendment period as described in section 6.04, below. For purposes of this paragraph, the changes in the qualification requirements made by SBJPA include § 414(u) and USERRA. In accordance with § 1.401(b)–1T(d)(1)(v), an amendment of a disqualifying provision described in this paragraph may be made retroactively effective only to the first day on which the plan was operated in accordance with the provision. For example, Announcement 97–24, 1997–11 I.R.B. 24, and Announcement 97–70, 1997–29 I.R.B. 14, provide that an employer may offer certain employees an option to defer commencement of benefits under its qualified plan provided the employer amends the plan retroactively to conform the plan to its pre-amendment operation regarding the option to defer. These announcements also state that future guidance will provide the date by which such a retroactive amendment must be adopted. The retroactive amendment described in Announcements 97–24 and 97–70 is an amendment to a plan provision that is integral to a qualification requirement changed by SBJPA and must therefore be adopted by the end of the remedial amendment period as described below. Generally, plan provisions reflecting the family aggregation rules as in effect prior to 1997 would also be integrally related to SBJPA qualification changes. See section 6.09. .03 A plan provision that causes a plan to fail to satisfy § 401(a) because of a change made by SBJPA or GATT to the qualification requirements that is effective on or after the first day of the first plan year beginning on or after January 1, 1999, is not a disqualifying provision under section 6.01. A plan provision that is integral to a qualification requirement changed by SBJPA is not a disqualifying provision under section 6.02 if the change in the qualification requirement is effective on or after the first day of the first plan year beginning on or after January 1, 1999, or if the plan provision as amended is not effective prior to the end

of the remedial amendment period as described in section 6.04, below. Thus, for example, § 401(b) and the regulations thereunder would not apply to permit the adoption of the § 401(k) and § 401(m) safe harbors described in § 1433(a) and (b) of SBJPA on a retroactive basis, because the provisions of § 1433(a) and (b) are effective for plan years beginning after December 31, 1998. A plan provision that is integral to the limitation under § 415(e), which was repealed by § 1452(a) of SBJPA effective for limitation years beginning after December 31, 1999, also is not a disqualifying provision under section 6.02.

.04 Pursuant to the Commissioner’s authority under § 1.401(b)–1(f), with respect to plans other than governmental plans, the remedial amendment period for disqualifying provisions described in sections 6.01 and 6.02 is hereby extended to the last day of the first plan year beginning on or after January 1, 1999. Thus, for example, a single employer calendar year nongovernmental plan that does not satisfy the requirements of § 401(a) because of a disqualifying provision described in section 6.01 or 6.02 may be retroactively amended to meet those requirements by December 31, 1999. For governmental plans, the remedial amendment period for disqualifying provisions described in sections 6.01 and 6.02 is extended to the later of (i) the first day of the first plan year beginning on or after January 1, 2000, or (ii) the last day of the first plan year beginning on or after the “1999 legislative date” (that is, the 90th day after the opening of the first legislative session beginning on or after January 1, 1999, of the governing body with authority to amend the plan, if that body does not meet continuously).

.05 In addition, the remedial amendment period with respect to all disqualifying provisions of new plans adopted or effective after December 7, 1994, and all disqualifying provisions of existing plans arising from a plan amendment adopted after December 7, 1994, that causes the plan to fail to satisfy the requirements of § 401(a) as of the date the amendment is adopted or effective (whichever is earlier), will not expire earlier than the last day of the first plan year beginning on or after January 1, 1999. For a governmen

tal plan, this period will not expire before the later of (i) the first day of the first plan year beginning on or after January 1, 2000, or (ii) the last day of the first plan year beginning on or after the 1999 legislative date.

.06 Although plan amendments are not required before the end of the remedial amendment period, plan sponsors must operate their plans in compliance with the provisions of SBJPA or GATT prior to the time plan amendments are required to the extent earlier operational compliance is required by law or regulation or by revenue ruling, notice or other guidance published in the Internal Revenue Bulletin. In these cases, any retroactive amendments will have to reflect the choices the plan sponsor has already made in the operation of the plan. The following are examples where earlier operational compliance is required.

1 Section 1465 of SBJPA generally requires plans to be operated in compliance with any provision of SBJPA that is effective before the first day of the first plan year beginning on or after January 1, 1998 (or January 1, 2000, in the case of a governmental plan), as of such provision’s effective date.

2 Section 401(m)(6)(A) requires correction of excess aggregate contributions to § 401(m) plans to be accomplished within 12 months of the end of the plan year in which the contributions were made. Thus, to this extent, for example, a sponsor of a § 401(m) plan will have to operate the plan in a manner that satisfies § 401(a) as amended by SBJPA and any retroactive amendments must reflect the choices that the plan sponsor has already made in the operation of the plan (for example, the definition of highly compensated employee).

3 Section 1.401(b)–1T(d)(1)(v) permits a remedial amendment of a disqualifying provision that is integral to a qualification requirement changed by SBJPA (including § 414(u) and USERRA) to be made retroactively effective only to the first day on which the plan was operated in accordance with the provision as amended.

.07 Earlier plan amendment may be required by law or regulation or by revenue ruling, notice or other guidance published in the Internal Revenue Bulletin. In these cases plan sponsors may

August 18, 1997 54 1997–33 I.R.B.

not rely on the remedial amendment period as a basis for making an amendment retroactively effective. The following are examples where the remedial amendment period may not be relied on as a basis for making an amendment retroactively effective.

1 Except as provided in Rev. Proc. 97–9, 1997–2 I.R.B. 55, a plan sponsor may not retroactively amend a § 401(k) plan to adopt the alternative (“SIMPLE”) method of satisfying the § 401(k) and § 401(m) nondiscrimination tests added by § 1422 of SBJPA.

2 As provided in § 417(e)(3)(B), the present value of a distribution from a preGATT plan that is made prior to the first plan year beginning after December 31, 1999, and before a plan amendment applying the GATT changes to § 417(e)(3) to the plan has been adopted and made effective generally must be determined under the plan’s pre-GATT terms.

.08 Any amendment that would result in an elimination or reduction of § 411(d)(6) protected benefits may not be made retroactively effective unless specifically permitted by law or regulation or by revenue ruling, notice, or other guidance published in the Internal Revenue Bulletin.

.09 Section 1431(b)(1) of SBJPA eliminated the family aggregation requirements of § 414(q)(6), effective for years beginning after December 31, 1996. Section 1431(b)(2) of SBJPA also eliminated the family aggregation requirement that formerly applied under § 401(a)(17)(A), effective for years beginning after December 31, 1996. A plan’s family aggregation provisions generally would be disqualifying provisions under § 401(b) because they would be integrally related to a qualification requirement of the Code that has been changed by SBJPA, effective before 1999. In certain limited circumstances, the continued application of the family aggregation rules in the operation of a plan could result in the loss of qualified status. The plan’s family aggregation provisions also would then be disqualifying provisions because they would cause disqualification as a result of SBJPA changes to the qualification requirements effective before 1999. Regardless of whether a plan’s family aggregation provisions are disqualifying provisions because they are integrally re

lated to SBJPA qualification changes or because they would cause plan disqualification, a plan amendment eliminating the provisions will not violate the requirements of § 411(d)(6) provided the amendment is effective no earlier than the first day on which the plan was operated in accordance with the amendment, and in no event earlier than the first day of the first plan year beginning after December 31, 1996.

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