1988—Subsec. (a)(1). Pub. L. 100–647 substituted “chapter” for “subchapter”.

1987—Subsec. (e)(2)(D). Pub. L. 100–203 struck out subpar. (D) which related to a benefit with respect to which an election under section 463 applies.

1986—Subsec. (a)(1). Pub. L. 99–514, § 1851(b)(2)(C)(iv)(I), substituted “under this subchapter” for “under section 162 or 212”.

Subsec. (a)(2). Pub. L. 99–514, § 1851(b)(2)(C)(iv)(II), substituted “they would otherwise be deductible” for “they satisfy the requirements of either of such sections”.

Subsec. (e)(4). Pub. L. 99–514, § 1851(a)(8)(A), added par. (4).

Subsec. (g)(1). Pub. L. 99–514, § 1851(a)(1), substituted “such a relationship” for “such a plan”.

Amendment by 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 Pub. L. 100–203 applicable to taxable years beginning after Dec. 31, 1987, see section 10201(c)(1) of Pub. L. 100–203, set out as a note under section 404 of this title.

Amendment by Pub. L. 99–514 effective, except as otherwise provided, as if included in the provisions of the Tax Reform Act of 1984, Pub. L. 98–369, div. A, to which such amendment relates, see section 1881 of Pub. L. 99–514, set out as a note under section 48 of this title.

Section 511(e) of Pub. L. 98–369, as amended by Pub. L. 99–514, title XVIII, § 1851(a)(12), (14), Oct. 22, 1986, 100 Stat. 2862, provided that:

“(1) In general.—Except as otherwise provided in this subsection, the amendments made by this section [enacting this subpart] shall apply to contributions paid or accrued after December 31, 1985, in taxable years ending after such date.

“(2) Special rule for collective bargaining agreements.—In the case of plan maintained pursuant to 1 or more collective bargaining agreements—

“(A) between employee representatives and 1 or more employers, and

“(B) in effect on July 1, 1985 (or ratified on or before such date),

“(3) Special rule for paragraph (2).—For purposes of paragraph (2), any plan amendment made pursuant to a collective bargaining agreement relating to the plan which amends the plan solely to conform to any requirement added by this section shall not be treated as a termination of such collective bargaining agreement.

“(4) Special effective date for contributions of facilities.—Notwithstanding paragraphs (1) and (2), the amendments made by this section shall apply in the case of—

“(A) any contribution after June 22, 1984, of a facility to a welfare benefit fund, and

“(B) any other contribution after June 22, 1984, to a welfare benefit fund to be used to acquire or improve a facility.

“(5) Binding contract exceptions to paragraph (4).—Paragraph (4) shall not apply to any facility placed in service before January 1, 1987—

“(A) which is acquired or improved by the fund (or contributed to the fund) pursuant to a binding contract in effect on June 22, 1984, and at all times thereafter, or

“(B) the construction of which by or for the fund began before June 22, 1984.

“(6) Amendments related to tax on unrelated business income.—The amendments made by subsection (b) [amending section 512 of this title] shall apply with respect to taxable years ending after December 31, 1985. For purposes of section 15 of the Internal Revenue Code of 1954 [now 1986], such amendments shall be treated as a change in the rate of a tax imposed by chapter 1 of such Code.

“(7) Amendments related to excise taxes on certain welfare benefit plans.—The amendments made by subsection (c) [enacting section 4976 of this title] shall apply to benefits provided after December 31, 1985.”

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.

Section 1851(a)(8)(B) of Pub. L. 99–514 provided that: “Except in the case of a reserve for post-retirement medical or life insurance benefits and any other arrangement between an insurance company and an employer under which the employer has a contractual right to a refund or dividend based solely on the experience of such employer, any account held for an employer by any person and defined as a fund in regulations issued pursuant to section 419(e)(3)(C) of the Internal Revenue Code of 1954 [now 1986] shall be considered a ‘fund’ no earlier than 6 months following the date such regulations are published in final form.”