1986—Pub. L. 99–514 amended section generally, substituting provisions relating to taxable amount in case of a taxable distribution for former provisions which related generally to administration of this chapter. See section 2661 of this title.

1981—Subsec. (b). Pub. L. 97–34 substituted “Section 6166” for “Sections 6166 and 6166A” in heading and “section 6166 (relating to extension of time” for “sections 6166 and 6166A (relating to extensions of time” in text.

Section applicable to generation-skipping transfers (within the meaning of section 2611 of this title) made after Oct. 22, 1986, except as otherwise provided, see section 1433 of Pub. L. 99–514, set out as a note under section 2601 of this title.

Amendment by Pub. L. 97–34 applicable to estates of decedents dying after Dec. 31, 1981, see section 422(f)(1) of Pub. L. 97–34, set out as a note under section 6166 of this title.