Source credit, amendments & notes
(Added Pub. L. 99–514, title XI, §1131(c)(1), Oct. 22, 1986, 100 Stat. 2477; amended Pub. L. 100–647, title I, §1011A(e)(1), (2), title II, §2005(a)(1), Nov. 10, 1988, 102 Stat. 3477, 3610; Pub. L. 103–465, title VII, §755(a), Dec. 8, 1994, 108 Stat. 5023; Pub. L. 104–188, title I, §1421(b)(9)(D), Aug. 20, 1996, 110 Stat. 1798; Pub. L. 105–34, title XV, §1507(a), Aug. 5, 1997, 111 Stat. 1067.)
References in Text
Sections 4021 and 4041(b) of the Employee Retirement Income Security Act of 1974, referred to in subsec. (c)(6)(A), are classified to sections 1321 and 1341(b), respectively, of Title 29, Labor.
Prior Provisions
A prior section, added Pub. L. 93–406, title II, §2001(f)(1), Sept. 2, 1974, 88 Stat. 955; amended Pub. L. 94–455, title XIX, §1906(b)(13)(A), Oct. 4, 1976, 90 Stat. 1834; Pub. L. 97–34, title III, §312(e)(3), Aug. 13, 1981, 95 Stat. 285; Pub. L. 97–448, title I, §103(c)(10)(B), Jan. 12, 1983, 96 Stat. 2377; Pub. L. 98–369, div. A, title IV, §491(d)(40), July 18, 1984, 98 Stat. 851, related to tax on excess contributions for self-employed individuals, prior to repeal applicable to years beginning after Dec. 31, 1983, by Pub. L. 97–248, title II, §237(c)(1), Sept. 3, 1982, 96 Stat. 511.
Amendments
1997—Subsec. (c)(6)(B). Pub. L. 105–34 amended subpar. (B) generally. Prior to amendment, subpar. (B) read as follows: “contributions to 1 or more defined contribution plans which are not deductible when contributed solely because of section 404(a)(7), but only to the extent such contributions do not exceed 6 percent of compensation (within the meaning of section 404(a)) paid or accrued (during the taxable year for which the contributions were made) to beneficiaries under the plans.”
1996—Subsec. (d)(1)(A)(iv). Pub. L. 104–188 added cl. (iv).
1994—Subsec. (c)(6). Pub. L. 103–465 added par. (6).
1988—Subsec. (c). Pub. L. 100–647, §1011A(e)(1), amended subsec. (c) generally, revising and restating as pars. (1) to (4) provisions of former pars. (1) and (2).
Subsec. (c)(4), (5). Pub. L. 100–647, §2005(a)(1), added par. (4) and redesignated former par. (4) as (5).
Subsec. (d)(1). Pub. L. 100–647, §1011A(e)(2), amended par. (1) generally. Prior to amendment, par. (1) read as follows: “The term ‘qualified employer plan’ means—
“(A) any plan meeting the requirements of section 401(a) which includes a trust exempt from the tax under section 501(a),
“(B) an annuity plan described in section 403(a), and
“(C) any simplified employee pension (within the meaning of section 408(k)).”
Effective Date of 1997 Amendment
Section 1507(b) of Pub. L. 105–34 provided that: “The amendments made by this section [amending this section] shall apply to taxable years beginning after December 31, 1997.”
Effective Date of 1996 Amendment
Amendment by Pub. L. 104–188 applicable to taxable years beginning after Dec. 31, 1996, see section 1421(e) of Pub. L. 104–188, set out as a note under section 72 of this title.
Effective Date of 1994 Amendment
Section 755(b) of Pub. L. 103–465 provided that:
“(1) Section 4972(c)(6)(a).—Section 4972(c)(6)(A) of the Internal Revenue Code of 1986 (as added by this section) shall apply to taxable years ending on or after the date of enactment of this Act [Dec. 8, 1994].
“(2) Section 4972(c)(6)(b).—Section 4972(c)(6)(B) of such Code (as added by this section) shall apply to taxable years ending on or after December 31, 1992.”
Effective Date of 1988 Amendment
Amendment by section 1011A(e)(1), (2) of Pub. L. 100–647 effective, except as otherwise provided, as if included in the provision of the Tax Reform Act of 1986, Pub. L. 99–514, to which such amendment relates, see section 1019(a) of Pub. L. 100–647, set out as a note under section 1 of this title.
Amendment by section 2005(a)(1) of Pub. L. 100–647 effective as if included in the amendment made by section 1131(c) of Pub. L. 99–514, see section 2005(e) of Pub. L. 100–647, as amended, set out as a note under section 404 of this title.
Effective Date
Section applicable to taxable years beginning after Dec. 31, 1986, with special rules in case of plans maintained pursuant to collective bargaining agreements, see section 1131(d) of Pub. L. 99–514, as amended, set out as an Effective Date of 1986 Amendment note under section 404 of this title.
Increase in Amount for Plan Termination Insurance Under Employee Retirement Insurance Security Act of 1974
Section 1011A(e)(5) of Pub. L. 100–647 provided that: “In the case of any taxable year beginning in 1987, the amount under section 4972(c)(1)(A)(ii) of the 1986 Code for a plan to which title IV of the Employee Retirement Income Security Act of 1974 [29 U.S.C. 1301 et seq.] applies shall be increased by the amount (if any) by which, as of the close of the plan year with or within which such taxable year begins—
“(A) the liabilities of such plan (determined as if the plan had terminated as of such time), exceed
“(B) the assets of such plan.”
Plan Amendments Not Required Until January 1, 1998
For provisions directing that if any amendments made by subtitle D [§§1401–1465] of title I of Pub. L. 104–188 require an amendment to any plan or annuity contract, such amendment shall not be required to be made before the first day of the first plan year beginning on or after Jan. 1, 1998, see section 1465 of Pub. L. 104–188, set out as a note under section 401 of this title.
Plan Amendments Not Required Until January 1, 1989
For provisions directing that if any amendments made by subtitle A or subtitle C of title XI [§§1101–1147 and 1171–1177] or title XVIII [§§1800–1899A] of Pub. L. 99–514 require an amendment to any plan, such plan amendment shall not be required to be made before the first plan year beginning on or after Jan. 1, 1989, see section 1140 of Pub. L. 99–514, as amended, set out as a note under section 401 of this title.
I.R.C. § 4972 — Tax on nondeductible contributions to qualified employer plans · USC 1997 ed., current through 1998-01-26 · https://pensionresource.website/EAMain?content=EAMain.Law&id=irc-4972&asof=1998-01-26 · printed Oct 16, 2026