Treas. Reg. § 1.410(b)-10

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Effective dates and transition rules.

CFR 2005 annual edition (revised as of 2005-04-01) · superseded Apr 1, 2006 · last amended by T.D. 8487, 58 FR 46844, Sept. 3, 1993

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(a) Statutory effective dates

(1) In general. Except as set forth in paragraph (a)(2) of this section, the minimum coverage rules of section 410(b) as amended by section 1112 of the Tax Reform Act of 1986 apply to plan years beginning on or after January 1, 1989.

(2) Special statutory effective date for collective bargaining agreements—(i) In general. As provided for by section 1112(e)(2) of the Tax Reform Act of 1986, in the case of a plan maintained pursuant to one or more collective bargaining agreements between employee representatives and one or more employers ratified before March 1, 1986, the minimum coverage rules of section 410(b) as amended by section 1112 of the Tax Reform Act of 1986 do not apply to employees covered by any such agreement in plan years beginning before the earlier of—

(A) January 1, 1991; or

(B) The later of January 1, 1989, or the date on which the last of such collective bargaining agreements terminates (determined without regard to any extension thereof after February 28, 1986). For purposes of this paragraph (a)(2), any extension or renegotiation of a collective bargaining agreement, which extension or renegotiation is ratified after February 28, 1986, is to be disregarded in determining the date on which the agreement terminates.

(ii) Example. The following example illustrates this paragraph (a)(2).

Example.
Employer A maintains Plan 1 pursuant to a collective bargaining agreement. Plan 1 covers 100 of Employer A's noncollectively bargained employees and 900 of Employer A's collectively bargained employees. Employer A also maintains Plan 2, which covers Employer A's other 400 noncollectively bargained employees. The collective bargaining agreement under which Plan 1 is maintained was entered into on January 1, 1986, and expires December 31, 1992. Because Plan 1 is a plan maintained pursuant to a collective bargaining agreement, section 410(b) applies to the first plan year beginning on or after January 1, 1991. In applying section 410(b) to Plan 2, the 100 noncollectively bargained employees in Plan 1 must be taken into account. The deferred effective date for plans maintained pursuant to a collective bargaining agreement is not applicable in determining how section 410(b) is applied to a plan that is not maintained pursuant to a collective bargaining agreement.

(iii) Plan maintained pursuant to a collective bargaining agreement. For purposes of this paragraph (a)(2), a plan is maintained pursuant to one or more collective bargaining agreements between employee representatives and one or more employers, if one or more of the agreements were ratified before March 1, 1986. Only plans maintained pursuant to agreements that the Secretary of Labor finds to be collective bargaining agreements and that satisfy section 7701(a)(46) are eligible for the deferred effective date under this paragraph (a)(2). A plan will not be treated as a plan maintained pursuant to one or more collective bargaining agreements eligible for the deferred effective date under this paragraph (a)(2) unless the plan would be a plan maintained pursuant to one or more collective bargaining agreements under the principles applied under section 1017(c) of the Employee Retirement Income Security Act of 1974. See H.R. Rep. No. 1280, 93rd Cong. 2d Sess. 266 (1974).

(b) Regulatory effective dates—(1) In general. Except as otherwise provided in this section, §§ 1.410(b)-2 through 1.410(b)-9 apply to plan years beginning on or after January 1, 1994.

(2) Plans of tax-exempt organizations. In the case of plans maintained by organizations exempt from income taxation under section 501(a), including plans subject to section 403(b)(12)(A)(i) (nonelective plans), §§ 1.410(b)-2 through 1.410(b)-9 apply to plan years beginning on or after January 1, 1996, to the extent such plans are subject to section 410(b).

(c) Compliance during transition period. For plan years beginning before the effective date of these regulations, as set forth in paragraph (b) of this section, and on or after the statutory effective date as set forth in paragraph (a) of this section, a plan must be operated in accordance with a reasonable, good faith interpretation of section 410(b). Whether a plan is operated in accordance with a reasonable, good faith interpretation of section 410(b) will generally be determined based on all of the relevant facts and circumstances, including the extent to which an employer has resolved unclear issues in its favor. If a plan's classification has been determined by the Commissioner to be nondiscriminatory and there have been no significant changes in or omissions of a material fact, the classification will be treated as nondiscriminatory for the relevant plan year. A plan will be deemed to be operated in accordance with a reasonable, good faith interpretation of section 410(b) if it is operated in accordance with the terms of §§ 1.410(b)-2 through 1.410(b)-9.

(d) Effective date for governmental plans. In the case of governmental plans described in section 414(d), including plans subject to section 403(b)(12)(A)(i) (nonelective plans) § 1.410(b)-2 through § 1.410(b)-10 apply to plan years beginning on or after January 1, 1996, or 90 days after the opening of the first legislative session beginning on or after January 1, 1996, of the governing body with authority to amend the plan, if that body does not meet continuously. Such plans are deemed to satisfy section 410(b) (and in the case of such plans that are not subject to section 403(b)(12)(A)(i), section 401(a)(3) as in effect on September 1, 1974) for plan years before that effective date. For purposes of this section, the governing body with authority to amend the plan is the legislature, board, commission, council, or other governing body with authority to amend the plan. See § 1.410(b)-2(d) and (e).

Source credit, amendments & notes

[T.D. 8487, 58 FR 46844, Sept. 3, 1993]

Treas. Reg. § 1.410(b)-10 — Effective dates and transition rules. · CFR 2005 annual edition (revised as of 2005-04-01) · https://pensionresource.website/EAMain?content=EAMain.Law&id=cfr26-1.410%28b%29-10&asof=1979-10-04 · printed Oct 16, 2026

Implements

I.R.C. § 410 Minimum participation standards

Cited by (code & regs)

Treas. Reg. § 1.410(b)-2 Minimum coverage requirements (after 1993).
Treas. Reg. § 1.411(d)-4 Section 411(d)(6) protected benefits.
Treas. Reg. § 1.410(b)-0 Table of contents.
Treas. Reg. § 1.410(b)-6 Excludable employees.

Guidance addressing this section

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Also cited in 1 other documents

IRS / Treasury

Proposed Rules

REG-149752-03Proposed Apr 5, 2004 — Proposed regulations under section 410(b) of the Code allow employees of a tax-exempt organization who are eligible to make salary reduction contributions to a…

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Each row is a version of the text as published by the official source. Code dates are the edition/release point that first reflected the change; regulation dates are eCFR effective dates. The library checks the official sources automatically, so new versions appear here on their own; “run” opens the sync that recorded a version.

Effective	Through	Source	Amended by
Apr 1, 1997	Mar 31, 2006	CFR 2005 annual edition (revised as of 2005-04-01) run 127	T.D. 8487, 58 FR 46844, Sept. 3, 1993	View
Apr 1, 2006	Mar 31, 2007	CFR 2006 annual edition (revised as of 2006-04-01) run 127	T.D. 8487, 58 FR 46844, Sept. 3, 1993	View · Redline (sign in)
Apr 1, 2007	current	eCFR editorial change effective 2016-09-09 run 2	T.D. 9275, 71 FR 41359, July 21, 2006	View · Redline (sign in)

Provision-level history (blame)