1981—Subsec. (c)(2). Pub. L. 97–34 defined “qualified real property” to include qualified exchange property (within the meaning of section 2032A(i)(3)).

1980—Subsec. (c). Pub. L. 96–222 designated existing provisions as par. (1), substituted “The rule” for “The rules”, and added par. (2).

1978—Subsec. (b). Pub. L. 95–600 substituted “qualified real property” for “qualified farm real property”.

Amendment by Pub. L. 97–34 applicable with respect to exchanges after Dec. 31, 1981, see section 421(k)(3) of Pub. L. 97–34, set out as a note under section 2032A of this title.

Amendment by Pub. L. 96–222 effective, except as otherwise provided, as if it had been included in the provisions of the Revenue Act of 1978, Pub. L. 95–600, to which such amendment relates, see section 201 of Pub. L. 96–222, set out as a note under section 32 of this title.

Amendment by Pub. L. 95–600 applicable to estates of decedents dying after Dec. 31, 1976, see section 702(r)(5) of Pub. L. 95–600, set out as a note under section 2051 of this title.