For inflation adjustment of certain items in this section, see Revenue Procedures listed in a table under section 1 of this title.

Section 9(a) of Pub. L. 110–142, which directed amendment of this part by adding this section at the end, was executed by inserting this section after section 6698, to reflect the probable intent of Congress.

A prior section 6699, added Pub. L. 95–600, title I, § 141(c)(1), Nov. 6, 1978, 92 Stat. 2794; amended Pub. L. 96–222, title I, § 101(a)(7)(L)(iii)(VI), (v)(IX), Apr. 1, 1980, 94 Stat. 200; Pub. L. 97–34, title III, § 331(c)(3), (4), Aug. 13, 1981, 95 Stat. 293, 294; Pub. L. 97–448, title I, § 103(g)(2)(B)–(D), Jan. 12, 1983, 96 Stat. 2379; Pub. L. 98–369, div. A, title IV, § 491(e)(9), July 18, 1984, 98 Stat. 853; Pub. L. 99–514, title XVIII, § 1847(b)(9), Oct. 22, 1986, 100 Stat. 2857, related to assessable penalties applicable to tax credit employee stock ownership plans, prior to repeal by Pub. L. 99–514, title XI, § 1171(b)(7)(A), Oct. 22, 1986, 100 Stat. 2513. For effective date of repeal, see section 1171(c) of Pub. L. 99–514, set out as an Effective Date of 1986 Amendment note under section 38 of this title.

2018—Subsec. (e)(1). Pub. L. 115–141 inserted “an amount equal to” after “increased by” and “for the calendar year” after “section 1(f)(3)”.

2017—Subsec. (e)(1). Pub. L. 115–97 substituted “for ‘calendar year 2016’ in subparagraph (A)(ii)” for “for ‘calendar year 1992’ in subparagraph (B)”.

2014—Subsec. (e). Pub. L. 113–295 added subsec. (e).

2009—Subsec. (b)(1). Pub. L. 111–92 substituted “$195” for “$89”.

2008—Subsec. (b)(1). Pub. L. 110–458 substituted “$89” for “$85”.

Amendment by Pub. L. 115–97 applicable to taxable years beginning after Dec. 31, 2017, see section 11002(e) of Pub. L. 115–97, set out as a note under section 1 of this title.

Amendment by Pub. L. 113–295 applicable to returns required to be filed, and statements required to be furnished, after Dec. 31, 2014, see section 208(h) of Pub. L. 113–295, set out as a note under section 6651 of this title.

Amendment by Pub. L. 111–92 applicable to returns for taxable years beginning after Dec. 31, 2009, see section 16(b) of Pub. L. 111–92, set out as a note under section 6698 of this title.

Pub. L. 110–458, title I, § 128(b), Dec. 23, 2008, 122 Stat. 5116, provided that: “The amendment made by subsection (a) [amending this section] shall apply to returns required to be filed after December 31, 2008.”

Pub. L. 110–142, § 9(c), Dec. 20, 2007, 121 Stat. 1808, provided that: “The amendments made by this section [enacting this section] shall apply to returns required to be filed after the date of the enactment of this Act [Dec. 20, 2007].”