Section 172(f), referred to in subsec. (b)(4), was repealed by Pub. L. 115–97, title I, § 13302(c)(2)(A), Dec. 22, 2017, 131 Stat. 2122.

The date of the enactment of the Tax Cuts and Jobs Act, referred to in subsec. (b)(4), probably means the date of enactment of title I of Pub. L. 115–97, which was approved Dec. 22, 2017. Prior versions of the bill that was enacted into law as Pub. L. 115–97 included such Short Title, but it was not enacted as part of title I of Pub. L. 115–97.

2017—Subsec. (b)(4). Pub. L. 115–97 inserted “(as in effect before the date of enactment of the Tax Cuts and Jobs Act)” after “as defined in section 172(f)”.

1996—Subsec. (b)(4). Pub. L. 104–188 substituted “section 172(f)” for “section 172(i)”.

1978—Subsec. (b)(4), (5). Pub. L. 95–600 added par. (4) and redesignated former par. (4) as (5).

1976—Subsec. (b)(2). Pub. L. 94–455, § 1901(a)(75)(A), struck out “with respect to taxable years of the corporation ending after May 26, 1969” after “ ‘redemption needs’ means”.

Subsec. (b)(4). Pub. L. 94–455, § 1901(a)(75)(B), struck out “or (2)” after “paragraph (1)”.

1969—Pub. L. 91–172 designated existing provisions as subsec. (a)(1) and added subsecs. (a)(2), (3) and (b).

Amendment by Pub. L. 115–97 applicable to net operating losses arising in taxable years beginning after Dec. 31, 2017, see section 13302(e) of Pub. L. 115–97, set out as a note under section 172 of this title.

Amendment by Pub. L. 95–600 applicable with respect to taxable years beginning after Sept. 30, 1979, see section 371(d) of Pub. L. 95–600, set out as a note under section 172 of this title.

Amendment by Pub. L. 94–455 applicable with respect to taxable years beginning after Dec. 31, 1976, see section 1901(d) of Pub. L. 94–455, set out as a note under section 2 of this title.

Pub. L. 91–172, title IX, § 906(b), Dec. 30, 1969, 83 Stat. 715, as amended by Pub. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095, provided that: “The amendment made by subsection (a) [amending this section] shall apply to the tax imposed under section 531 of the Internal Revenue Code of 1986 [formerly I.R.C. 1954] with respect to taxable years ending after May 26, 1969.”