2014—Subsec. (a). Pub. L. 113–295 struck out “or acquired on or after October 8, 1940,” after “persons acquire,” in par. (1) and after “corporation acquires,” in par. (2).

1984—Subsecs. (b), (c). Pub. L. 98–369 added subsec. (b), redesignated former subsec. (b) as (c) and inserted reference to subsec. (b).

1976—Subsecs. (a), (b). Pub. L. 94–455, § 1906(b)(13)(A), struck out “or his delegate” after “Secretary” wherever appearing.

Subsec. (c). Pub. L. 94–455, § 1901(a)(38), struck out subsec. (c) relating to presumptions in the case of disproportionate purchase price.

1964—Subsec. (a). Pub. L. 88–272 substituted “the Secretary or his delegate may disallow such deduction, credit, or other allowance” for “such deduction, credit or other allowance shall not be allowed”.

Amendment by Pub. L. 113–295 effective Dec. 19, 2014, subject to a savings provision, see section 221(b) of Pub. L. 113–295, set out as a note under section 1 of this title.

Pub. L. 98–369, div. A, title VII, § 712(k)(8)(C), July 18, 1984, 98 Stat. 952, provided that: “The amendments made by this paragraph [amending this section] shall apply to liquidations after October 20, 1983, in taxable years ending after such date.”

Pub. L. 88–272, title II, § 235(d), Feb. 26, 1964, 78 Stat. 127, provided that: “The amendments made by subsections (a) and (c) [enacting sections 1561 to 1563 of this title and amending this section and sections 441 and 802 of this title] shall apply with respect to taxable years ending after December 31, 1963. The amendment made by subsection (b) [amending section 1551 of this title] shall apply with respect to transfers made after June 12, 1963.”